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Li S, Yi H, Yuan F, Zhang X, Zhong Y, Huang Y. Oral application of magnesium-L-threonate alleviates radicular pain by inhibiting neuro-inflammation dependent central sensitization of rats. Brain Res 2024; 1839:148910. [PMID: 38604557 DOI: 10.1016/j.brainres.2024.148910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 03/13/2024] [Accepted: 04/01/2024] [Indexed: 04/13/2024]
Abstract
BACKGROUND We have reported neuro-inflammation is involved in radicular pain by enhancing the efficiency of pain synaptic transmission in spinal level. Recently, peers' studies have confirmed that magnesium deficiency leads to neuro-inflammation, thus contributes to memory and emotional deficits and pain hypersensitivity in antineoplastic agents treated rats. In this study, we explore the effect of oral application of magnesium-L-threonate (L-TAMS) in radicular pain induced by lumbar disc herniation (LDH) of rats and the possible mechanisms. METHODS Rat model of LDH was induced by autologous nucleus pulposus (NP) implantation. Mechanical and thermal pain thresholds were assessed by von Frey filaments and hotplate test respectively. L-TAMS was applied from drinking water at dosage of 604 mg/kg/day from 2 day before NP implantation and until the end of the experiment. Free Mg2+ content in serum and cerebrospinal fluid (CSF) was measured by calmagite chromometry. Synaptic transmission efficiency was determined by C-fiber evoked field potentials recorded by electrophysiologic recording in vivo. The activation of microglia in spinal dorsal horn was displayed by immunofluorescence staining and western blotting. The expressions of pro-inflammatory cytokines and glutamic N-methyl-D-aspartate receptor (NMDAR) subunits (NR2A, NR2B) were assessed by western blotting and enzyme-linked immunosorbent assay (ELISA) respectively. RESULTS NP implantation induced mechanical allodynia and thermal hyperalgesia, accompanied by decreased Mg2+ concentration in serum and CSF which were both obscured by oral application of L-TAMS. L-TAMS inhibited spinal microglia activation and pro-inflammatory cytokines (TNF-α, IL-6, IL-1β) expression of rats with NP. L-TAMS decreased C-fiber evoked potentials and NR2B protein level in rats with NP, which were rescued by extra intrathecal delivery of TNF-α or IL-6 or IL-1β. CONCLUSIONS Oral application of L-TAMS alleviates radicular pain by inhibiting neuro-inflammation dependent central sensitization of rats.
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Affiliation(s)
- Siyuan Li
- Department of Spine Surgery, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China
| | - Hongjian Yi
- Department of Spine Surgery, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China
| | - Fuli Yuan
- Department of Anesthesiology, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China
| | - Xuejuan Zhang
- Department of Radiology, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China
| | - Yi Zhong
- Key Laboratory of Neuroscience, School of Basic Medical Science, Guangzhou Medical University, Guangzhou, 511436, China.
| | - Yangliang Huang
- Department of Spine Surgery, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China.
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Oyama M, Watanabe S, Iwai T, Tanabe M. Selective inhibition of A-fiber-mediated excitatory transmission underlies the analgesic effects of KCNQ channel opening in the spinal dorsal horn. Neuropharmacology 2024; 254:109994. [PMID: 38750803 DOI: 10.1016/j.neuropharm.2024.109994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 04/11/2024] [Accepted: 05/10/2024] [Indexed: 05/18/2024]
Abstract
Neuronal voltage-gated KCNQ (Kv7) channels, expressed centrally and peripherally, mediate low-threshold and non-inactivating M-currents responsible for the control of tonic excitability of mammalian neurons. Pharmacological opening of KCNQ channels has been reported to generate analgesic effects in animal models of neuropathic pain. Here, we examined the possible involvement of central KCNQ channels in the analgesic effects of retigabine, a KCNQ channel opener. Behaviorally, intraperitoneally applied retigabine exerted analgesic effects on thermal and mechanical hypersensitivity in male mice developing neuropathic pain after partial sciatic nerve ligation, which was antagonized by the KCNQ channel blocker XE991 preadministered intraperitoneally and intrathecally. Intrathecally applied retigabine also exerted analgesic effects that were inhibited by intrathecally injected XE991. We then explored the synaptic mechanisms underlying the analgesic effects of retigabine in the spinal dorsal horn. Whole-cell recordings were made from dorsal horn neurons in spinal slices with attached dorsal roots from adult male mice developing neuropathic pain, and the effects of retigabine on miniature and afferent-evoked postsynaptic currents were examined. Retigabine reduced the amplitude of A-fiber-mediated EPSCs without affecting C-fiber-mediated excitatory synaptic transmission. A-fiber-mediated EPSCs remained unaltered by retigabine in the presence of XE991, consistently with the behavioral findings. The frequency and amplitude of mEPSCs were not affected by retigabine. Thus, opening of KCNQ channels in the central terminals of primary afferent A-fibers inhibits excitatory synaptic transmission in the spinal dorsal horn, most likely contributing to the analgesic effect of retigabine.
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Affiliation(s)
- Misa Oyama
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan; Medicinal Research Laboratories, School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan
| | - Shun Watanabe
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan; Medicinal Research Laboratories, School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan
| | - Takashi Iwai
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan; Medicinal Research Laboratories, School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan
| | - Mitsuo Tanabe
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan; Medicinal Research Laboratories, School of Pharmacy, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan.
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3
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Eid SA, Elzinga SE, Guo K, Hinder LM, Hayes JM, Pacut CM, Koubek EJ, Hur J, Feldman EL. Transcriptomic profiling of sciatic nerves and dorsal root ganglia reveals site-specific effects of prediabetic neuropathy. Transl Res 2024; 270:24-41. [PMID: 38556110 PMCID: PMC11166517 DOI: 10.1016/j.trsl.2024.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 03/01/2024] [Accepted: 03/24/2024] [Indexed: 04/02/2024]
Abstract
Peripheral neuropathy (PN) is a severe and frequent complication of obesity, prediabetes, and type 2 diabetes characterized by progressive distal-to-proximal peripheral nerve degeneration. However, a comprehensive understanding of the mechanisms underlying PN, and whether these mechanisms change during PN progression, is currently lacking. Here, gene expression data were obtained from distal (sciatic nerve; SCN) and proximal (dorsal root ganglia; DRG) injury sites of a high-fat diet (HFD)-induced mouse model of obesity/prediabetes at early and late disease stages. Self-organizing map and differentially expressed gene analyses followed by pathway enrichment analysis identified genes and pathways altered across disease stage and injury site. Pathways related to immune response, inflammation, and glucose and lipid metabolism were consistently dysregulated with HFD-induced PN, irrespective of injury site. However, regulation of oxidative stress was unique to the SCN while dysregulated Hippo and Notch signaling were only observed in the DRG. The role of the immune system and inflammation in disease progression was supported by an increase in the percentage of immune cells in the SCN with PN progression. Finally, when comparing these data to transcriptomic signatures from human patients with PN, we observed conserved pathways related to metabolic dysregulation across species, highlighting the translational relevance of our mouse data. Our findings demonstrate that PN is associated with distinct site-specific molecular re-programming in the peripheral nervous system, identifying novel, clinically relevant therapeutic targets.
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Affiliation(s)
- Stéphanie A. Eid
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Sarah E. Elzinga
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Kai Guo
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Lucy M. Hinder
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109, USA
| | - John M. Hayes
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Crystal M. Pacut
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Emily J. Koubek
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Junguk Hur
- Department of Biomedical Sciences, University of North Dakota, School of Medicine and Health Sciences, Grand Forks, ND 58202, USA
| | - Eva L. Feldman
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109, USA
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4
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Rodríguez-Palma EJ, Islas-Espinoza AM, Ramos-Rodríguez II, Pizaña-Encarnación JM, Gutiérrez-Agredano MÁ, Morales-Moreno C, Fernández-Guasti A, Granados-Soto V. Estradiol modulates the role of the spinal α 6-subunit containing GABA A receptors in female rats with neuropathic pain. Eur J Pharmacol 2024; 974:176616. [PMID: 38679122 DOI: 10.1016/j.ejphar.2024.176616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 04/18/2024] [Accepted: 04/25/2024] [Indexed: 05/01/2024]
Abstract
The purpose of this study was to investigate the mechanisms underlying sex differences in the role of spinal α6-subunit containing GABAA (α6GABAA) receptors in rats with neuropathic pain. Intrathecal 2,5-dihydro-7-methoxy-2-(4-methoxyphenyl)-3H-pyrazolo [4,3-c] quinoline-3-one (PZ-II-029, positive allosteric modulator of α6GABAA receptors) reduced tactile allodynia in female but not in male rats with neuropathic pain. PZ-II-029 was also more effective in females than males in inflammatory and nociplastic pain. Ovariectomy abated the antiallodynic effect of PZ-II-029 in neuropathic rats, whereas 17β-estradiol or 4,4',4''-(4-propyl-[1H]-pyrazole-1,3,5-triyl) trisphenol (PPT), estradiol receptor-α agonist, restored the effect of PZ-II-029 in ovariectomized rats. Blockade of estradiol receptor-α, using MPP (1,3-bis(4-hydroxyphenyl)-4-methyl-5-[4-(2-piperidinylethoxy) phenol]-1H-pyrazole dihydrochloride), prevented the effect of 17β-estradiol on PZ-II-029-induced antiallodynia in ovariectomized neuropathic females. Nerve injury reduced α6GABAA receptor protein expression at the dorsal root ganglia (DRG) and spinal cord of intact and ovariectomized female rats. In this last group, reconstitution with 17β-estradiol fully restored its expression in DRG and spinal cord. In male rats, nerve injury reduced α6GABAA receptor protein expression only at the spinal cord. Nerve injury enhanced estradiol receptor-α protein expression at the DRG in intact non-ovariectomized rats. However, ovariectomy decreased estradiol receptor-α protein expression at the DRG. In the spinal cord there were no changes in estradiol receptor-α protein expression. 17β-estradiol restored estradiol receptor-α protein expression at the DRG and increased it at the spinal cord of neuropathic rats. These data suggest that 17β-estradiol modulates the expression and function of the α6GABAA receptor through its interaction with estradiol receptor-α in female rats.
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Affiliation(s)
- Erick J Rodríguez-Palma
- Neurobiology of Pain Laboratory, Departamento de Farmacobiología, Cinvestav, South Campus, Mexico City, Mexico
| | - Ana M Islas-Espinoza
- Neurobiology of Pain Laboratory, Departamento de Farmacobiología, Cinvestav, South Campus, Mexico City, Mexico
| | - Itzel I Ramos-Rodríguez
- División Académica de Ciencias de la Salud, Universidad Juárez Autónoma de Tabasco, Villahermosa, Tabasco, Mexico
| | | | - Miguel Á Gutiérrez-Agredano
- Neurobiology of Pain Laboratory, Departamento de Farmacobiología, Cinvestav, South Campus, Mexico City, Mexico
| | | | | | - Vinicio Granados-Soto
- Neurobiology of Pain Laboratory, Departamento de Farmacobiología, Cinvestav, South Campus, Mexico City, Mexico.
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5
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Boccella S, Perrone M, Fusco A, Bonsale R, Infantino R, Nuzzo S, Pecoraro G, Ricciardi F, Maria Morace A, Petrillo G, Leone I, Franzese M, de Novellis V, Guida F, Salvatore M, Maione S, Luongo L. Spinal neuronal activity and neuroinflammatory component in a mouse model of CFA-induced vestibulodynia. Brain Behav Immun 2024; 119:408-415. [PMID: 38636564 DOI: 10.1016/j.bbi.2024.04.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 03/21/2024] [Accepted: 04/16/2024] [Indexed: 04/20/2024] Open
Abstract
Vestibulodynia is a complex pain disorder characterized by chronic discomfort in the vulvar region, often accompanied by tactile allodynia and spontaneous pain. In patients a depressive behaviour is also observed. In this study, we have used a model of vestibulodynia induced by complete Freund's adjuvant (CFA) focusing our investigation on the spinal cord neurons and microglia. We investigated tactile allodynia, spontaneous pain, and depressive-like behavior as key behavioral markers of vestibulodynia. In addition, we conducted in vivo electrophysiological recordings to provide, for the first time to our knowledge, the characterization of the spinal sacral neuronal activity in the L6-S1 dorsal horn of the spinal cord. Furthermore, we examined microglia activation in the L6-S1 dorsal horn using immunofluorescence, unveiling hypertrophic phenotypes indicative of neuroinflammation in the spinal cord. This represents a novel insight into the role of microglia in vestibulodynia pathology. To address the therapeutic aspect, we employed pharmacological interventions using GABApentin, amitriptyline, and PeaPol. Remarkably, all three drugs, also used in clinic, showed efficacy in alleviating tactile allodynia and depressive-like behavior. Concurrently, we also observed a normalization of the altered neuronal firing and a reduction of microglia hypertrophic phenotypes. In conclusion, our study provides a comprehensive understanding of the CFA-induced model of vestibulodynia, encompassing behavioral, neurophysiological and neuroinflammatory aspects. These data pave the way to investigate spinal cord first pain plasticity in vestibulodynia.
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Affiliation(s)
- Serena Boccella
- Department of Experimental Medicine, Division of Pharmacology, Università della Campania "L. Vanvitelli", Via Costantinopoli 16, 80138 Naples, Italy
| | - Michela Perrone
- Department of Experimental Medicine, Division of Pharmacology, Università della Campania "L. Vanvitelli", Via Costantinopoli 16, 80138 Naples, Italy
| | - Antimo Fusco
- Department of Experimental Medicine, Division of Pharmacology, Università della Campania "L. Vanvitelli", Via Costantinopoli 16, 80138 Naples, Italy
| | - Roozbe Bonsale
- Department of Experimental Medicine, Division of Pharmacology, Università della Campania "L. Vanvitelli", Via Costantinopoli 16, 80138 Naples, Italy
| | - Rosmara Infantino
- Department of Experimental Medicine, Division of Pharmacology, Università della Campania "L. Vanvitelli", Via Costantinopoli 16, 80138 Naples, Italy
| | - Silvia Nuzzo
- IRCCS Synlab SDN, Via Emanuele Gianturco 113, 80143 Naples, Italy
| | | | - Federica Ricciardi
- Department of Experimental Medicine, Division of Pharmacology, Università della Campania "L. Vanvitelli", Via Costantinopoli 16, 80138 Naples, Italy
| | - Andrea Maria Morace
- Department of Experimental Medicine, Division of Pharmacology, Università della Campania "L. Vanvitelli", Via Costantinopoli 16, 80138 Naples, Italy
| | - Gianluca Petrillo
- Department of Molecular Medicine and Medical Biotechnology, "Federico II" University of Naples, Via Tommaso de Amicis 95, 80131 Naples, Italy
| | - Ilaria Leone
- IRCCS Synlab SDN, Via Emanuele Gianturco 113, 80143 Naples, Italy
| | - Monica Franzese
- IRCCS Synlab SDN, Via Emanuele Gianturco 113, 80143 Naples, Italy
| | - Vito de Novellis
- Department of Experimental Medicine, Division of Pharmacology, Università della Campania "L. Vanvitelli", Via Costantinopoli 16, 80138 Naples, Italy
| | - Francesca Guida
- Department of Experimental Medicine, Division of Pharmacology, Università della Campania "L. Vanvitelli", Via Costantinopoli 16, 80138 Naples, Italy
| | - Marco Salvatore
- IRCCS Synlab SDN, Via Emanuele Gianturco 113, 80143 Naples, Italy
| | - Sabatino Maione
- Department of Experimental Medicine, Division of Pharmacology, Università della Campania "L. Vanvitelli", Via Costantinopoli 16, 80138 Naples, Italy.
| | - Livio Luongo
- Department of Experimental Medicine, Division of Pharmacology, Università della Campania "L. Vanvitelli", Via Costantinopoli 16, 80138 Naples, Italy.
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6
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Swanson KA, Nguyen KL, Gupta S, Ricard J, Bethea JR. TNFR1/p38αMAPK signaling in Nex + supraspinal neurons regulates estrogen-dependent chronic neuropathic pain. Brain Behav Immun 2024; 119:261-271. [PMID: 38570102 PMCID: PMC11162907 DOI: 10.1016/j.bbi.2024.03.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 03/26/2024] [Accepted: 03/30/2024] [Indexed: 04/05/2024] Open
Abstract
Upregulation of soluble tumor necrosis factor (sTNF) cytokine signaling through TNF receptor 1 (TNFR1) and subsequent neuronal hyperexcitability are observed in both animal models and human chronic neuropathic pain (CNP). Previously, we have shown that estrogen modulates sTNF/TNFR1 signaling in CNP, which may contribute to female prevalence of CNP. The estrogen-dependent role of TNFR1-mediated supraspinal neuronal circuitry in CNP remains unknown. In this study, we interrogated the intersect between supraspinal TNFR1 mediated neuronal signaling and sex specificity by selectively removing TNFR1 in Nex + neurons in adult mice (NexCreERT2::TNFR1f/f). We determined that mechanical hypersensitivity induced by chronic constriction injury (CCI) decreases over time in males, but not in females. Subsequently, we investigated two downstream pathways, p38MAPK and NF-κB, important in TNFR1 signaling and injury response. We detected p38MAPK and NF-κB activation in male cortical tissue; however, p38MAPK phosphorylation was reduced in NexCreERT2::TNFR1f/f males. We observed a similar recovery from acute pain in male mice following CCI when p38αMAPK was knocked out of supraspinal Nex + neurons (NexCreERT2::p38αMAPKf/f), while chronic pain developed in female mice. To explore the intersection between estrogen and inflammation in CNP we used a combination therapy of an estrogen receptor β (ER β) inhibitor with a sTNF/TNFR1 or general p38MAPK inhibitor. We determined both combination therapies lends therapeutic relief to females following CCI comparable to the response evaluated in male mice. These data suggest that TNFR1/p38αMAPK signaling in Nex + neurons in CNP is male-specific and lack of therapeutic efficacy following sTNF inhibition in females is due to ER β interference. These studies highlight sex-specific differences in pathways important to pain chronification and elucidate potential therapeutic strategies that would be effective in both sexes.
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Affiliation(s)
- Kathryn A Swanson
- Department of Biology, Drexel University, Papadakis Integrated Science Building, Philadelphia, PA 19104, USA
| | - Kayla L Nguyen
- Department of Anatomy and Cell Biology, The George Washington University School of Medicine and Health Sciences, Ross Hall, 2300 I (Eye) St NW, Rm.530A, Washington, D.C 20052, USA.
| | - Shruti Gupta
- Department of Anatomy and Cell Biology, The George Washington University School of Medicine and Health Sciences, Ross Hall, 2300 I (Eye) St NW, Rm.530A, Washington, D.C 20052, USA
| | - Jerome Ricard
- Department of Biology, Drexel University, Papadakis Integrated Science Building, Philadelphia, PA 19104, USA
| | - John R Bethea
- Department of Anatomy and Cell Biology, The George Washington University School of Medicine and Health Sciences, Ross Hall, 2300 I (Eye) St NW, Rm.530A, Washington, D.C 20052, USA.
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7
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Khan J, Ali G, Saeed A, Khurshid A, Ahmad S, Kashtoh H, Ataya FS, Bathiha GES, Ullah A, Khan A. Efficacy assessment of novel methanimine derivatives in chronic constriction injury-induced neuropathic model: An in-vivo, ex-vivo and In-Silico approach. Eur J Pharm Sci 2024; 198:106797. [PMID: 38735401 DOI: 10.1016/j.ejps.2024.106797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Revised: 05/07/2024] [Accepted: 05/10/2024] [Indexed: 05/14/2024]
Abstract
The multicomponent etiology, complex clinical implications, dose-based side effect and degree of pain mitigation associated with the current pharmacological therapy is incapable in complete resolution of chronic neuropathic pain patients which necessitates the perpetual requirement of novel medication therapy. Therefore, this study explored the ameliorative aptitude of two novel methanimine imitative like (E)-N-(4-nitrobenzylidene)-4‑chloro-2-iodobenzamine (KB 09) and (E)-N-(4-methylbenzylidene)-4‑chloro-2-iodobenzamine (KB 10) in chronic constriction injury (CCI) of sciatic nerve induced neuropathic pain in rat model. Standard behavioral tests like dynamic and static allodynia, cold, thermal and mechanical hyperalgesia along with rotarod activity were performed at various experimental days like 0, 3, 7, 14 and 21. Enzyme linked immunosorbent assay (ELISA) on spinal tissue and antioxidant assays on sciatic nerve were executed accompanied by molecular docking and simulation studies. Prolonged ligation of sciatic nerve expressively induced hyperalgesia as well as allodynia in rats. KB 09 and KB 10 substantially attenuated the CCI elicited hyperalgesia and allodynia. They significantly reduced the biomarkers of pain and inflammation like Interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-α) in ELISA and while enhanced the GSH, SOD and CAT and diminished the MDA levels during antioxidant assays. KB 09 displayed -9.62 kcal/mol with TNF-α and -7.68 kcal/mol binding energy with IL-6 whereas KB 10 exhibited binding energy of -8.20 kcal/mol with IL-6 while -11.68 kcal/mol with TNF-α and hence both trial compounds ensured stable interaction with IL-6 and TNF-α during computational analysis. The results advocated that both methanimine derivatives might be novel candidates for attenuation of CCI-induced neuropathic pain prospects via anti-nociceptive, anti-inflammatory and antioxidant mechanisms.
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Affiliation(s)
- Jawad Khan
- Department of Pharmacy, University of Peshawar, Peshawar 25120, Pakistan.
| | - Gowhar Ali
- Department of Pharmacy, University of Peshawar, Peshawar 25120, Pakistan.
| | - Aamer Saeed
- Department of Chemistry, Quaid-I-Azam University Islamabad 45320, Pakistan
| | - Asma Khurshid
- Department of Chemistry, Quaid-I-Azam University Islamabad 45320, Pakistan.
| | - Sajjad Ahmad
- Department of Health and Biological Sciences, Abasyn University Peshawar 25000, Pakistan
| | - Hamdy Kashtoh
- Department of Biotechnology, Yeungnam University, Gyeongbuk, Korea.
| | - Farid S Ataya
- Department of Biochemistry, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia
| | - Gaber El-Saber Bathiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, AlBeheria, Egypt
| | - Aman Ullah
- Department of Pharmacy, Saba Medical Center, Abu Dhabi PO Box 20316, United Arab Emirates
| | - Ajmal Khan
- Natural and Medical Sciences Research Center, University of Nizwa, P.O Box 33, Postal Code 616, Birkat Al Mauz, Nizwa, Sultanate of Oman
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8
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Zumbusch AS, McEachern ELF, Morgan OB, Nickner E, Mogil JS. Normative Preclinical Algesiometry Data on the von Frey and Radiant Heat Paw-Withdrawal Tests: An Analysis of Data from More Than 8,000 Mice Over 20 Years. THE JOURNAL OF PAIN 2024; 25:104468. [PMID: 38219851 DOI: 10.1016/j.jpain.2024.01.333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/18/2023] [Accepted: 01/03/2024] [Indexed: 01/16/2024]
Abstract
The measurement of withdrawal to experimenter-delivered mechanical stimuli (von Frey test) and to heat stimuli (radiant heat paw-withdrawal or Hargreaves' test) applied to the hind paws is ubiquitous in preclinical pain research, but no normative values for the most-common applications of these tests have ever been published. We analyzed a retrospective data set of withdrawal thresholds or latencies in 8,150 mice in which these measures were taken using replicate determinations, before and after injection of inflammatory substances or experimental nerve damage producing pain hypersensitivity, totaling 97,332 measurements. All mice were tested in the same physical laboratory over a 20-year period using similar equipment and procedures. We nonetheless find evidence of large interindividual variability, affected by tester, genotype, mouse sex, tester sex, replicate order, and injury. These factors are discussed, and we believe that these normative data will serve as a useful reference for expected values in preclinical pain testing. PERSPECTIVE: This article presents a retrospective analysis of a large data set of mouse von Frey and radiant heat paw-withdrawal (Hargreaves' test) measurements collected in a single laboratory over 20 years. In addition to serving as a normative guide, sources of variability are identified including genotype, tester, and sex.
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Affiliation(s)
- Alicia S Zumbusch
- Departments of Psychology and Anesthesia, Faculties of Science, Medicine, and Dentistry, Alan Edwards Centre for Research on Pain, McGill University, Montreal, QC, Canada
| | - Eleri L F McEachern
- Departments of Psychology and Anesthesia, Faculties of Science, Medicine, and Dentistry, Alan Edwards Centre for Research on Pain, McGill University, Montreal, QC, Canada
| | - Oakley B Morgan
- Departments of Psychology and Anesthesia, Faculties of Science, Medicine, and Dentistry, Alan Edwards Centre for Research on Pain, McGill University, Montreal, QC, Canada
| | - Elodie Nickner
- Departments of Psychology and Anesthesia, Faculties of Science, Medicine, and Dentistry, Alan Edwards Centre for Research on Pain, McGill University, Montreal, QC, Canada
| | - Jeffrey S Mogil
- Departments of Psychology and Anesthesia, Faculties of Science, Medicine, and Dentistry, Alan Edwards Centre for Research on Pain, McGill University, Montreal, QC, Canada
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9
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Martínez-Magaña CJ, Muñoz-Castillo PA, Murbartián J. Spinal bestrophin-1 and anoctamin-1 channels have a pronociceptive role in the tactile allodynia induced by REM sleep deprivation in rats. Brain Res 2024; 1834:148915. [PMID: 38582414 DOI: 10.1016/j.brainres.2024.148915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 04/01/2024] [Accepted: 04/03/2024] [Indexed: 04/08/2024]
Abstract
Bestrophin-1 and anoctamin-1 are members of the calcium-activated chloride channels (CaCCs) family and are involved in inflammatory and neuropathic pain. However, their role in pain hypersensitivity induced by REM sleep deprivation (REMSD) has not been studied. This study aimed to determine if anoctamin-1 and bestrophin-1 are involved in the pain hypersensitivity induced by REMSD. We used the multiple-platform method to induce REMSD. REM sleep deprivation for 48 h induced tactile allodynia and a transient increase in corticosterone concentration at the beginning of the protocol (12 h) in female and male rats. REMSD enhanced c-Fos and α2δ-1 protein expression but did not change activating transcription factor 3 (ATF3) and KCC2 expression in dorsal root ganglia and dorsal spinal cord. Intrathecal injection of CaCCinh-A01, a non-selective bestrophin-1 blocker, and T16Ainh-A01, a specific anoctamin-1 blocker, reverted REMSD-induced tactile allodynia. However, T16Ainh-A01 had a higher antiallodynic effect in male than female rats. In addition, REMSD increased bestrophin-1 protein expression in DRG but not in DSC in male and female rats. In marked contrast, REMSD decreased anoctamin-1 protein expression in DSC but not in DRG, only in female rats. Bestrophin-1 and anoctamin-1 promote pain and maintain tactile allodynia induced by REM sleep deprivation in both male and female rats, but their expression patterns differ between the sexes.
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Affiliation(s)
| | | | - Janet Murbartián
- Departamento de Farmacobiología, Cinvestav, Sede sur, Mexico City, Mexico.
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10
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Reynders A, Anissa Jhumka Z, Gaillard S, Mantilleri A, Malapert P, Magalon K, Etzerodt A, Salio C, Ugolini S, Castets F, Saurin AJ, Serino M, Hoeffel G, Moqrich A. Gut microbiota promotes pain chronicity in Myosin1A deficient male mice. Brain Behav Immun 2024; 119:750-766. [PMID: 38710336 DOI: 10.1016/j.bbi.2024.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 04/23/2024] [Accepted: 05/03/2024] [Indexed: 05/08/2024] Open
Abstract
Chronic pain is a heavily debilitating condition and a huge socio-economic burden, with no efficient treatment. Over the past decade, the gut microbiota has emerged as an important regulator of nervous system's health and disease states. Yet, its contribution to the pathogenesis of chronic somatic pain remains poorly documented. Here, we report that male but not female mice lacking Myosin1a (KO) raised under single genotype housing conditions (KO-SGH) are predisposed to develop chronic pain in response to a peripheral tissue injury. We further underscore the potential of MYO1A loss-of-function to alter the composition of the gut microbiota and uncover a functional connection between the vulnerability to chronic pain and the dysbiotic gut microbiota of KO-SGH males. As such, parental antibiotic treatment modifies gut microbiota composition and completely rescues the injury-induced pain chronicity in male KO-SGH offspring. Furthermore, in KO-SGH males, this dysbiosis is accompanied by a transcriptomic activation signature in the dorsal root ganglia (DRG) macrophage compartment, in response to tissue injury. We identify CD206+CD163- and CD206+CD163+ as the main subsets of DRG resident macrophages and show that both are long-lived and self-maintained and exhibit the capacity to monitor the vasculature. Consistently, in vivo depletion of DRG macrophages rescues KO-SGH males from injury-induced chronic pain underscoring a deleterious role for DRG macrophages in a Myo1a-loss-of function context. Together, our findings reveal gene-sex-microbiota interactions in determining the predisposition to injury-induced chronic pain and point-out DRG macrophages as potential effector cells.
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Affiliation(s)
- Ana Reynders
- Aix-Marseille-Université, CNRS, Institut de Biologie du Développement de Marseille, Marseille, France.
| | - Z Anissa Jhumka
- Aix-Marseille-Université, CNRS, Institut de Biologie du Développement de Marseille, Marseille, France
| | | | - Annabelle Mantilleri
- Aix-Marseille-Université, CNRS, Institut de Biologie du Développement de Marseille, Marseille, France
| | - Pascale Malapert
- Aix-Marseille-Université, CNRS, Institut de Biologie du Développement de Marseille, Marseille, France
| | - Karine Magalon
- Aix-Marseille-Université, CNRS, Institut de Biologie du Développement de Marseille, Marseille, France
| | - Anders Etzerodt
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Chiara Salio
- Department of Veterinary Sciences, University of Turin, Grugliasco, TO, Italy
| | - Sophie Ugolini
- Aix-Marseille-Université, CNRS, INSER, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Francis Castets
- Aix-Marseille-Université, CNRS, Institut de Biologie du Développement de Marseille, Marseille, France
| | - Andrew J Saurin
- Aix-Marseille-Université, CNRS, Institut de Biologie du Développement de Marseille, Marseille, France
| | - Matteo Serino
- Institut de Recherche en Santé Digestive, Université de Toulouse-Paul Sabatier, INSERM, INRAe, ENVT, UPS, Toulouse, France
| | - Guillaume Hoeffel
- Aix-Marseille-Université, CNRS, INSER, Centre d'Immunologie de Marseille-Luminy, Marseille, France
| | - Aziz Moqrich
- Aix-Marseille-Université, CNRS, Institut de Biologie du Développement de Marseille, Marseille, France.
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11
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Shi YQ, Sun ZH, Wang ZZ, Su CY, Zhang W, Yu LY, Xu Y, Gao YL, Wang HB, Tian JW, Li CM. A novel role for microtubule affinity-regulating kinases in neuropathic pain. Br J Pharmacol 2024; 181:2012-2032. [PMID: 38112022 DOI: 10.1111/bph.16303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 09/15/2023] [Accepted: 10/03/2023] [Indexed: 12/20/2023] Open
Abstract
BACKGROUND AND PURPOSE Neuropathic pain affects millions of patients, but there are currently few viable therapeutic options available. Microtubule affinity-regulating kinases (MARKs) regulate the dynamics of microtubules and participate in synaptic remodelling. It is unclear whether these changes are involved in the central sensitization of neuropathic pain. This study examined the role of MARK1 or MARK2 in regulating neurosynaptic plasticity induced by neuropathic pain. EXPERIMENTAL APPROACH A rat spinal nerve ligation (SNL) model was established to induce neuropathic pain. The role of MARKs in nociceptive regulation was assessed by genetically knocking down MARK1 or MARK2 in amygdala and systemic administration of PCC0105003, a novel small molecule MARK inhibitor. Cognitive function, anxiety-like behaviours and motor coordination capability were also examined in SNL rats. Synaptic remodelling-associated signalling changes were detected with electrophysiological recording, Golgi-Cox staining, western blotting and qRT-PCR. KEY RESULTS MARK1 and MARK2 expression levels in amygdala and spinal dorsal horn were elevated in SNL rats. MARK1 or MARK2 knockdown in amygdala and PCC0105003 treatment partially attenuated pain-like behaviours along with improving cognitive deficit, anxiogenic-like behaviours and motor coordination in SNL rats. Inhibition of MARKs signalling reversed synaptic plasticity at the functional and structural levels by suppressing NR2B/GluR1 and EB3/Drebrin signalling pathways both in amygdala and spinal dorsal horn. CONCLUSION AND IMPLICATIONS These results suggest that MARKs-mediated synaptic remodelling plays a key role in the pathogenesis of neuropathic pain and that pharmacological inhibitors of MARKs such as PCC0105003 could represent a novel therapeutic strategy for the management of neuropathic pain.
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Affiliation(s)
- Yao-Qin Shi
- From the school of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong Province, China
| | - Zhi-Hong Sun
- From the school of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong Province, China
| | - Zhe-Zhe Wang
- From the school of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong Province, China
| | - Chun-Yu Su
- From the school of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong Province, China
| | - Wei Zhang
- From the school of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong Province, China
| | - Lin-Yao Yu
- From the school of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong Province, China
| | - Yang Xu
- From the school of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong Province, China
| | - Yong-Lin Gao
- College of Life Sciences, Yantai University, Yantai, China
| | - Hong-Bo Wang
- From the school of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong Province, China
| | - Jing-Wei Tian
- From the school of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong Province, China
| | - Chun-Mei Li
- From the school of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong Province, China
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12
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Warren G, Osborn M, Tsantoulas C, David-Pereira A, Cohn D, Duffy P, Ruston L, Johnson C, Bradshaw H, Kaczocha M, Ojima I, Yates A, O'Sullivan SE. Discovery and Preclinical Evaluation of a Novel Inhibitor of FABP5, ART26.12, Effective in Oxaliplatin-Induced Peripheral Neuropathy. THE JOURNAL OF PAIN 2024; 25:104470. [PMID: 38232863 DOI: 10.1016/j.jpain.2024.01.335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 01/05/2024] [Accepted: 01/08/2024] [Indexed: 01/19/2024]
Abstract
Oxaliplatin-induced peripheral neuropathy (OIPN) is a dose-limiting toxicity characterised by mechanical allodynia and thermal hyperalgesia, without any licensed medications. ART26.12 is a fatty acid-binding protein (FABP) 5 inhibitor with antinociceptive properties, characterised here for the prevention and treatment of OIPN. ART26.12 binds selectively to FABP5 compared to FABP3, FABP4, and FABP7, with minimal off-target liabilities, high oral bioavailability, and a NOAEL of 1,000 mg/kg/day in rats and dogs. In an established preclinical OIPN model, acute oral dosing (25-100 mg/kg) showed a cannabinoid receptor type 1 (CB1)-dependent anti-allodynic effect lasting up to 8 hours (persisting longer than plasma exposure to ART26.12). Antagonists of cannabinoid receptor type 2 (CB2), peroxisome proliferator-activated receptor alpha, and transient receptor potential cation channel subfamily V member 1 (TRPV1) may have also been implicated. Twice daily oral dosing (25 mg/kg bis in die (BID) for 7 days) showed anti-allodynic effects in an established OIPN model without the development of tolerance. In a prevention paradigm, coadministration of ART26.12 (10 and 25 mg/kg BID for 15 days) with oxaliplatin prevented thermal hyperalgesia, mitigated mechanical allodynia, and attenuated OXA-induced weight loss. Multi-scale analyses revealed widespread lipid modulation, particularly among N-acyl amino acids in the spinal cord, including potential analgesic mediators. Additionally, ART26.12 administration led to upregulation of ion channels in the periaqueductal grey, and broad translational upregulation within the plasma proteome. These results show promise that ART26.12 is a safe and well-tolerated candidate for the treatment and prevention of OIPN through lipid modulation. PERSPECTIVE: Inhibition of fatty acid-binding protein 5 (FABP5) is a novel target for reducing pain associated with chemotherapy. ART26.12 is a safe and well-tolerated small molecule FABP5 inhibitor effective at preventing and reducing pain induced with oxaliplatin through lipid modulation and activation of cannabinoid receptors.
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Affiliation(s)
| | | | | | | | | | | | | | - Clare Johnson
- Department of Psychological and Brain Sciences, Bloomington, Indiana
| | - Heather Bradshaw
- Department of Psychological and Brain Sciences, Bloomington, Indiana
| | - Martin Kaczocha
- Department of Anesthesiology, Stony Brook University, New York; Institute of Chemical Biology and Drug Discovery, Stony Brook University, New York
| | - Iwao Ojima
- Department of Chemistry, Stony Brook University, New York; Institute of Chemical Biology and Drug Discovery, Stony Brook University, New York
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13
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Hullugundi SK, Dolkas J, Chernov AV, Yaksh TL, Eddinger KA, Angert M, Catroli GF, Strongin AY, Dougherty PM, Li Y, Quehenberger O, Armando A, Shubayev VI. Cholesterol-dependent LXR transcription factor activity represses pronociceptive effects of estrogen in sensory neurons and pain induced by myelin basic protein fragments. Brain Behav Immun Health 2024; 38:100757. [PMID: 38590761 PMCID: PMC10999831 DOI: 10.1016/j.bbih.2024.100757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Accepted: 03/17/2024] [Indexed: 04/10/2024] Open
Abstract
Background A bioactive myelin basic protein (MBP) fragment, comprising MBP84-104, is released in sciatic nerve after chronic constriction injury (CCI). Intraneural injection (IN) of MBP84-104 in an intact sciatic nerve is sufficient to induce persistent neuropathic pain-like behavior via robust transcriptional remodeling at the injection site and ipsilateral dorsal root ganglia (DRG) and spinal cord. The sex (female)-specific pronociceptive activity of MBP84-104 associates with sex-specific changes in cholesterol metabolism and activation of estrogen receptor (ESR)1 signaling. Methods In male and female normal and post-CCI rat sciatic nerves, we assessed: (i) cholesterol precursor and metabolite levels by lipidomics; (ii) MBP84-104 interactors by mass spectrometry of MBP84-104 pull-down; and (iii) liver X receptor (LXR)α protein expression by immunoblotting. To test the effect of LXRα stimulation on IN MBP84-104-induced mechanical hypersensitivity, the LXRα expression was confirmed along the segmental neuraxis, in DRG and spinal cord, followed by von Frey testing of the effect of intrathecally administered synthetic LXR agonist, GW3965. In cultured male and female rat DRGs exposed to MBP84-104 and/or estrogen treatments, transcriptional effect of LXR stimulation by GW3965 was assessed on downstream cholesterol transporter Abc, interleukin (IL)-6, and pronociceptive Cacna2d1 gene expression. Results CCI regulated LXRα ligand and receptor levels in nerves of both sexes, with cholesterol precursors, desmosterol and 7-DHC, and oxysterol elevated in females relative to males. MBP84-104 interacted with nuclear receptor coactivator (Ncoa)1, known to activate LXRα, injury-specific in nerves of both sexes. LXR stimulation suppressed ESR1-induced IL-6 and Cacna2d1 expression in cultured DRGs of both sexes and attenuated MBP84-104-induced pain in females. Conclusion The injury-released bioactive MBP fragments induce pronociceptive changes by selective inactivation of nuclear transcription factors, including LXRα. By Ncoa1 sequestration, bioactive MBP fragments render LXRα function to counteract pronociceptive activity of estrogen/ESR1 in sensory neurons. This effect of MBP fragments is prevalent in females due to high circulating estrogen levels in females relative to males. Restoring LXR activity presents a promising therapeutic strategy in management of neuropathic pain induced by bioactive MBP.
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Affiliation(s)
- Swathi K. Hullugundi
- Department of Anesthesiology, University of California, San Diego, La Jolla, CA, USA
- VA San Diego Healthcare System, La Jolla, CA, USA
| | - Jennifer Dolkas
- Department of Anesthesiology, University of California, San Diego, La Jolla, CA, USA
- VA San Diego Healthcare System, La Jolla, CA, USA
| | - Andrei V. Chernov
- Department of Anesthesiology, University of California, San Diego, La Jolla, CA, USA
- VA San Diego Healthcare System, La Jolla, CA, USA
| | - Tony L. Yaksh
- Department of Anesthesiology, University of California, San Diego, La Jolla, CA, USA
| | - Kelly A. Eddinger
- Department of Anesthesiology, University of California, San Diego, La Jolla, CA, USA
| | - Mila Angert
- Department of Anesthesiology, University of California, San Diego, La Jolla, CA, USA
- VA San Diego Healthcare System, La Jolla, CA, USA
| | - Glaucilene Ferreira Catroli
- Department of Anesthesiology, University of California, San Diego, La Jolla, CA, USA
- VA San Diego Healthcare System, La Jolla, CA, USA
| | - Alex Y. Strongin
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA
| | - Patrick M. Dougherty
- Department of Pain Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Yan Li
- Department of Pain Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | | | - Aaron Armando
- Lipidomics Core, University of California, San Diego, La Jolla, CA, USA
| | - Veronica I. Shubayev
- Department of Anesthesiology, University of California, San Diego, La Jolla, CA, USA
- VA San Diego Healthcare System, La Jolla, CA, USA
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14
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Haque MM, Kuppusamy P, Melemedjian OK. Disruption of mitochondrial pyruvate oxidation in dorsal root ganglia drives persistent nociceptive sensitization and causes pervasive transcriptomic alterations. Pain 2024; 165:1531-1549. [PMID: 38285538 DOI: 10.1097/j.pain.0000000000003158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 10/18/2023] [Indexed: 01/31/2024]
Abstract
ABSTRACT Metabolism is inextricably linked to every aspect of cellular function. In addition to energy production and biosynthesis, metabolism plays a crucial role in regulating signal transduction and gene expression. Altered metabolic states have been shown to maintain aberrant signaling and transcription, contributing to diseases like cancer, cardiovascular disease, and neurodegeneration. Metabolic gene polymorphisms and defects are also associated with chronic pain conditions, as are increased levels of nerve growth factor (NGF). However, the mechanisms by which NGF may modulate sensory neuron metabolism remain unclear. This study demonstrated that intraplantar NGF injection reprograms sensory neuron metabolism. Nerve growth factor suppressed mitochondrial pyruvate oxidation and enhanced lactate extrusion, requiring 24 hours to increase lactate dehydrogenase A and pyruvate dehydrogenase kinase 1 (PDHK1) expression. Inhibiting these metabolic enzymes reversed NGF-mediated effects. Remarkably, directly disrupting mitochondrial pyruvate oxidation induced severe, persistent allodynia, implicating this metabolic dysfunction in chronic pain. Nanopore long-read sequencing of poly(A) mRNA uncovered extensive transcriptomic changes upon metabolic disruption, including altered gene expression, splicing, and poly(A) tail lengths. By linking metabolic disturbance of dorsal root ganglia to transcriptome reprogramming, this study enhances our understanding of the mechanisms underlying persistent nociceptive sensitization. These findings imply that impaired mitochondrial pyruvate oxidation may drive chronic pain, possibly by impacting transcriptomic regulation. Exploring these metabolite-driven mechanisms further might reveal novel therapeutic targets for intractable pain.
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Affiliation(s)
- Md Mamunul Haque
- Deptartmen of Neural and Pain Sciences, University of Maryland School of Dentistry, Baltimore, MD, United States
| | - Panjamurthy Kuppusamy
- Deptartmen of Neural and Pain Sciences, University of Maryland School of Dentistry, Baltimore, MD, United States
| | - Ohannes K Melemedjian
- Deptartmen of Neural and Pain Sciences, University of Maryland School of Dentistry, Baltimore, MD, United States
- UM Center to Advance Chronic Pain Research, Baltimore, MD, United States
- UM Marlene and Stewart Greenebaum Comprehensive Cancer Center, Baltimore, MD, United States
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15
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Cropper HC, Conway CM, Wyche W, Pradhan AA. Glial activation in pain and emotional processing regions in the nitroglycerin mouse model of chronic migraine. Headache 2024. [PMID: 38899347 DOI: 10.1111/head.14740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 02/15/2024] [Accepted: 04/12/2024] [Indexed: 06/21/2024]
Abstract
OBJECTIVE Our aim was to survey astrocyte and microglial activation across four brain regions in a mouse model of chronic migraine. BACKGROUND Chronic migraine is a leading cause of disability, with higher rates in females. The role of central nervous system neurons and glia in migraine pathophysiology is not fully elucidated. Preclinical studies have shown abnormal glial activation in the trigeminal nucleus caudalis of male rodents. No current reports have investigated glial activation in both sexes in other important brain regions involved with the nociceptive and emotional processing of pain. METHODS The mouse nitroglycerin model of migraine was used, and nitroglycerin (10 mg/kg) or vehicle was administered every other day for 9 days. Prior to injections on days 1, 5, and 9, cephalic allodynia was determined by periorbital von Frey hair testing. Immunofluorescent staining of astrocyte marker, glial fibrillary protein (GFAP), and microglial marker, ionized calcium binding adaptor molecule 1 (Iba1), in male and female trigeminal nucleus caudalis, periaqueductal gray, somatosensory cortex, and nucleus accumbens was completed. RESULTS Behavioral testing demonstrated increased cephalic allodynia in nitroglycerin- versus vehicle-treated mice. An increase in the percent area covered by GFAP+ cells in the trigeminal nucleus caudalis and nucleus accumbens, but not the periaqueductal gray or somatosensory cortex, was observed in response to nitroglycerin. No significant differences were observed for Iba1 staining across brain regions. We did not detect significant sex differences in GFAP or Iba1 quantification. CONCLUSIONS Immunohistochemical analysis suggests that, at the time point tested, immunoreactivity of GFAP+ astrocytes, but not Iba1+ microglia, changes in response to chronic migraine-associated pain. Additionally, there do not appear to be significant differences between males and females in GFAP+ or Iba1+ cells across the four brain regions analyzed.
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Affiliation(s)
- Haley C Cropper
- Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Catherine M Conway
- Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Whitney Wyche
- Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Amynah A Pradhan
- Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois, USA
- Center for Clinical Pharmacology, Department of Anesthesiology, Washington University School of Medicine, St. Louis, Missouri, USA
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16
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Kawarai Y, Nakamura J, Hagiwara S, Suzuki-Narita M, Inage K, Ohtori S. Alterations in DNA methylation machinery in a rat model of osteoarthritis of the hip. J Orthop Surg Res 2024; 19:357. [PMID: 38880910 PMCID: PMC11181635 DOI: 10.1186/s13018-024-04847-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Accepted: 06/10/2024] [Indexed: 06/18/2024] Open
Abstract
BACKGROUND This study aimed to validate alterations in the gene expression of DNA methylation-related enzymes and global methylation in the peripheral blood mononuclear cell (PBMC) and synovial tissues of animal hip osteoarthritis (OA) models. METHODS Animals were assigned to the control (no treatment), sham (25 µL of sterile saline), and OA (25 µL of sterile saline and 2 mg of monoiodoacetate) groups. Microcomputed tomography scan, histopathological assessment and pain threshold measurement were performed after induction. The mRNA expression of the DNA methylation machinery genes and global DNA methylation in the PBMC and hip synovial tissue were evaluated. RESULTS The OA group presented with hip joint OA histopathologically and radiologically and decreased pain threshold. The mRNA expression of DNA methyltransferase (Dnmt 3a), ten-eleven translocation (Tet) 1 and Tet 3 in the synovial tissue of the OA group was significantly upregulated. Global DNA methylation in the synovial tissue of the OA group was significantly higher than that of the control and sham groups. CONCLUSIONS The intra-articular administration of monoiodoacetate induced hip joint OA and decreased pain threshold. The DNA methylation machinery in the synovial tissues of hip OA was altered.
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Affiliation(s)
- Yuya Kawarai
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, 1- 8-1 Inohana, Chuo-ku, Chiba City, Chiba, 260-8677, Japan.
| | - Junichi Nakamura
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, 1- 8-1 Inohana, Chuo-ku, Chiba City, Chiba, 260-8677, Japan
| | - Shigeo Hagiwara
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, 1- 8-1 Inohana, Chuo-ku, Chiba City, Chiba, 260-8677, Japan
| | - Miyako Suzuki-Narita
- Department of Bioenvironmental Medicine, Graduate School of Medicine, Chiba University, 1- 8-1 Inohana, Chuo-ku, Chiba City, Chiba, 260-8677, Japan
| | - Kazuhide Inage
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, 1- 8-1 Inohana, Chuo-ku, Chiba City, Chiba, 260-8677, Japan
| | - Seiji Ohtori
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, 1- 8-1 Inohana, Chuo-ku, Chiba City, Chiba, 260-8677, Japan
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17
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Makabe K, Okada H, Tachibana N, Ishikura H, Ito N, Tanaka M, Chijimatsu R, Terashima A, Yano F, Asaka M, Yanagihara D, Taketomi S, Matsumoto T, Tanaka S, Omata Y, Saito T. Baricitinib ameliorates inflammatory and neuropathic pain in collagen antibody-induced arthritis mice by modulating the IL-6/JAK/STAT3 pathway and CSF-1 expression in dorsal root ganglion neurons. Arthritis Res Ther 2024; 26:121. [PMID: 38879555 PMCID: PMC11179219 DOI: 10.1186/s13075-024-03354-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 06/11/2024] [Indexed: 06/19/2024] Open
Abstract
BACKGROUND Janus kinase (JAK) inhibitors, such as baricitinib, are widely used to treat rheumatoid arthritis (RA). Clinical studies show that baricitinib is more effective at reducing pain than other similar drugs. Here, we aimed to elucidate the molecular mechanisms underlying the pain relief conferred by baricitinib, using a mouse model of arthritis. METHODS We treated collagen antibody-induced arthritis (CAIA) model mice with baricitinib, celecoxib, or vehicle, and evaluated the severity of arthritis, histological findings of the spinal cord, and pain-related behaviours. We also conducted RNA sequencing (RNA-seq) to identify alterations in gene expression in the dorsal root ganglion (DRG) following baricitinib treatment. Finally, we conducted in vitro experiments to investigate the direct effects of baricitinib on neuronal cells. RESULTS Both baricitinib and celecoxib significantly decreased CAIA and improved arthritis-dependent grip-strength deficit, while only baricitinib notably suppressed residual tactile allodynia as determined by the von Frey test. CAIA induction of inflammatory cytokines in ankle synovium, including interleukin (IL)-1β and IL-6, was suppressed by treatment with either baricitinib or celecoxib. In contrast, RNA-seq analysis of the DRG revealed that baricitinib, but not celecoxib, restored gene expression alterations induced by CAIA to the control condition. Among many pathways changed by CAIA and baricitinib treatment, the interferon-alpha/gamma, JAK-signal transducer and activator of transcription 3 (STAT3), and nuclear factor kappa B (NF-κB) pathways were considerably decreased in the baricitinib group compared with the celecoxib group. Notably, only baricitinib decreased the expression of colony-stimulating factor 1 (CSF-1), a potent cytokine that causes neuropathic pain through activation of the microglia-astrocyte axis in the spinal cord. Accordingly, baricitinib prevented increases in microglia and astrocytes caused by CAIA. Baricitinib also suppressed JAK/STAT3 pathway activity and Csf1 expression in cultured neuronal cells. CONCLUSIONS Our findings demonstrate the effects baricitinib has on the DRG in relation to ameliorating both inflammatory and neuropathic pain.
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Affiliation(s)
- Kenta Makabe
- Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - Hiroyuki Okada
- Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-Ku, Tokyo, 113-8655, Japan
- Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - Naohiro Tachibana
- Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - Hisatoshi Ishikura
- Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - Norihito Ito
- Japan Drug Development and Medical Affairs, Eli Lilly Japan K.K, 5-1-28 Isogami-Dori, Chuo-Ku, Kobe, 651-0086, Japan
| | - Masaru Tanaka
- Japan Drug Development and Medical Affairs, Eli Lilly Japan K.K, 5-1-28 Isogami-Dori, Chuo-Ku, Kobe, 651-0086, Japan
| | - Ryota Chijimatsu
- Bone and Cartilage Regenerative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - Asuka Terashima
- Bone and Cartilage Regenerative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - Fumiko Yano
- Bone and Cartilage Regenerative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - Meiko Asaka
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-Ku, Tokyo, 153-8902, Japan
| | - Dai Yanagihara
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-Ku, Tokyo, 153-8902, Japan
| | - Shuji Taketomi
- Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - Takumi Matsumoto
- Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - Sakae Tanaka
- Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - Yasunori Omata
- Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-Ku, Tokyo, 113-8655, Japan
- Bone and Cartilage Regenerative Medicine, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - Taku Saito
- Sensory and Motor System Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-Ku, Tokyo, 113-8655, Japan.
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18
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Hunter TJ, Videlefsky ZM, Nakatani LF, Zadina JE. Comparison of Morphine and Endomorphin Analog ZH853 for Tolerance and Immunomodulation in a Rat Model of Neuropathic Pain. THE JOURNAL OF PAIN 2024:104607. [PMID: 38885918 DOI: 10.1016/j.jpain.2024.104607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 06/04/2024] [Accepted: 06/10/2024] [Indexed: 06/20/2024]
Abstract
µ-Opioid receptor agonists, the gold standard for analgesia, come with significant side effects when used chronically. Tolerance, defined as the decrease in analgesic activity after repeated use, remains a vital therapeutic obstacle as it increases the likelihood of dose escalation and potentially lethal side effects like respiratory depression. Previous experiments have indicated that the endomorphin-1 analog, ZH853, is a specific µ-opioid receptor agonist with reduced side effects like tolerance and glial activation following chronic central administration in pain-naïve animals. Here we investigated the effects of chronic, peripheral administration of µ-opioid receptor agonists following neuropathic injury. Though µ-opioids are effective at reducing neuropathic pain, they are not recommended for 1st line treatment due to negative side effects. Compared to chronic morphine, chronic ZH853 treatment led to decreased tolerance and reduced glial activation. Following twice daily intravenous injections, morphine was less potent and had a shorter duration of antinociception compared to ZH853. Chronic morphine, but not chronic ZH853, elevated markers of activation/inflammation of astrocytes (GFAP), microglia (Iba1), the proinflammatory cytokine TNFα and phosphorylated MAP kinase pp38. By contrast, chronic ZH853 reduced Iba1 and TNFα relative to both morphine and vehicle, suggesting anti-inflammatory properties with respect to these markers. GFAP and pp38 were not significantly different from vehicle but were significantly lower than morphine. This study demonstrates the effectiveness of chronic ZH853 for providing analgesia in a neuropathic pain state with reduced tolerance compared to morphine, potentially due to reductions in spinal glial activation. PERSPECTIVE: Neuropathic pain is generally undertreated, resistant to available medications, and opioid treatment is limited by side-effects. Here, we show that, compared to an equiantinociceptive dose of a stereotypical µ-opioid receptor agonist, morphine, chronic intravenous administration of endomorphin analog ZH853 led to prolonged antiallodynia, reduced tolerance, and inhibition of spinal cord neuroinflammation in male spared nerve-injured rats.
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Affiliation(s)
- Terrence J Hunter
- Neuroscience Program/Brain Institute, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Zoe M Videlefsky
- Neuroscience Program/Brain Institute, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | | | - James E Zadina
- SE LA Veterans Health Care System, Tulane University School of Medicine, New Orleans, LA 70112, USA; Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA; Neuroscience Program/Brain Institute, Tulane University School of Medicine, New Orleans, LA 70112, USA; Department of Pharmacology, Tulane University School of Medicine, New Orleans, LA 70112, USA.
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19
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Andleeb H, Papke RL, Stokes C, Richter K, Herz SM, Chiang K, Kanumuri SRR, Sharma A, Damaj MI, Grau V, Horenstein NA, Thakur GA. Explorations of Agonist Selectivity for the α9* nAChR with Novel Substituted Carbamoyl/Amido/Heteroaryl Dialkylpiperazinium Salts and Their Therapeutic Implications in Pain and Inflammation. J Med Chem 2024; 67:8642-8666. [PMID: 38748608 PMCID: PMC11181317 DOI: 10.1021/acs.jmedchem.3c02429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 04/01/2024] [Accepted: 04/29/2024] [Indexed: 06/14/2024]
Abstract
There is an urgent need for nonopioid treatments for chronic and neuropathic pain to provide effective alternatives amid the escalating opioid crisis. This study introduces novel compounds targeting the α9 nicotinic acetylcholine receptor (nAChR) subunit, which is crucial for pain regulation, inflammation, and inner ear functions. Specifically, it identifies novel substituted carbamoyl/amido/heteroaryl dialkylpiperazinium iodides as potent agonists selective for human α9 and α9α10 over α7 nAChRs, particularly compounds 3f, 3h, and 3j. Compound 3h (GAT2711) demonstrated a 230 nM potency as a full agonist at α9 nAChRs, being 340-fold selective over α7. Compound 3c was 10-fold selective for α9α10 over α9 nAChR. Compounds 2, 3f, and 3h inhibited ATP-induced interleukin-1β release in THP-1 cells. The analgesic activity of 3h was fully retained in α7 knockout mice, suggesting that analgesic effects were potentially mediated through α9* nAChRs. Our findings provide a blueprint for developing α9*-specific therapeutics for pain.
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Affiliation(s)
- Hina Andleeb
- Department
of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
- Department
of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical
Sciences, Bouvé College of Health Sciences, Northeastern University, Boston, Massachusetts 02115, United States
| | - Roger L. Papke
- Department
of Pharmacology and Therapeutics, University
of Florida, P.O. Box 100267, Gainesville, Florida 32610, United States
| | - Clare Stokes
- Department
of Pharmacology and Therapeutics, University
of Florida, P.O. Box 100267, Gainesville, Florida 32610, United States
| | - Katrin Richter
- Department
of General and Thoracic Surgery, Laboratory of Experimental Surgery,
Justus-Liebig-University, German Center for Lung Research [DZL], Cardio-Pulmonary Institute [CPI], Giessen 35385, Germany
| | - Sara M. Herz
- Department
of Pharmacology and Toxicology, Virginia
Commonwealth University, Richmond, Virginia 23298, United States
| | - Ka Chiang
- Department
of Pharmacology and Toxicology, Virginia
Commonwealth University, Richmond, Virginia 23298, United States
| | - Siva R. Raju Kanumuri
- Department
of Pharmaceutics, University of Florida, Gainesville, Florida 32610, United States
| | - Abhisheak Sharma
- Department
of Pharmaceutics, University of Florida, Gainesville, Florida 32610, United States
| | - M. Imad Damaj
- Department
of Pharmacology and Toxicology, Virginia
Commonwealth University, Richmond, Virginia 23298, United States
| | - Veronika Grau
- Department
of General and Thoracic Surgery, Laboratory of Experimental Surgery,
Justus-Liebig-University, German Center for Lung Research [DZL], Cardio-Pulmonary Institute [CPI], Giessen 35385, Germany
| | - Nicole A. Horenstein
- Department
of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
| | - Ganesh A. Thakur
- Department
of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical
Sciences, Bouvé College of Health Sciences, Northeastern University, Boston, Massachusetts 02115, United States
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20
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Shu J, Wang Y, Guo W, Liu T, Cai S, Shi T, Hu W. Carbenoid-involved reactions integrated with scaffold-based screening generates a Nav1.7 inhibitor. Commun Chem 2024; 7:135. [PMID: 38866907 PMCID: PMC11169417 DOI: 10.1038/s42004-024-01213-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 05/30/2024] [Indexed: 06/14/2024] Open
Abstract
The discovery of selective Nav1.7 inhibitors is a promising approach for developing anti-nociceptive drugs. In this study, we present a novel oxindole-based readily accessible library (OREAL), which is characterized by readily accessibility, unique chemical space, ideal drug-like properties, and structural diversity. We used a scaffold-based approach to screen the OREAL and discovered compound C4 as a potent Nav1.7 inhibitor. The bioactivity characterization of C4 reveals that it is a selective Nav1.7 inhibitor and effectively reverses Paclitaxel-induced neuropathic pain (PINP) in rodent models. Preliminary toxicology study shows C4 is negative to hERG. The consistent results of molecular docking and molecular simulations further support the reasonability of the in-silico screening and show the insight of the binding mode of C4. Our discovery of C4 paves the way for pushing the Nav1.7-based anti-nociceptive drugs forward to the clinic.
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Affiliation(s)
- Jirong Shu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Yuwei Wang
- Shenzhen University Health Science Center, Shenzhen, 518060, China
| | - Weijie Guo
- Shenzhen University Health Science Center, Shenzhen, 518060, China
| | - Tao Liu
- Shenzhen University Health Science Center, Shenzhen, 518060, China
| | - Song Cai
- Shenzhen University Health Science Center, Shenzhen, 518060, China
| | - Taoda Shi
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China.
| | - Wenhao Hu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
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21
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Wang C, Cheng J, Song L, Zhou Z, Zhao Q, Zhao Y, Wang H, Tan Y, Zhao B, Yang M. Self-Assembled Multilayer-Modified Needles Simulate Acupuncture and Diclofenac Sodium Delivery for Rheumatoid Arthritis. ACS APPLIED MATERIALS & INTERFACES 2024; 16:29876-29890. [PMID: 38829728 DOI: 10.1021/acsami.4c04815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
A novel therapeutic approach combining acupuncture and diclofenac sodium (DS) administration was established for the potential treatment for rheumatoid arthritis (RA). DS is a commonly used anti-inflammatory and analgesic drug but has short duration and adverse effects. Acupoints are critical linkages in the meridian system and are potential candidates for drug delivery. Herein, we fabricated a DS-loaded multilayer-modified acupuncture needle (DS-MMAN) and investigated its capacity for inhibiting RA. This DS-MMAN possesses sustained release properties and in vitro anti-inflammatory effects. Experimental results showed that the DS-MMAN with microdoses can enhance analgesia and efficiently relieve joint swelling compared to the oral or intra-articular administration of DS with gram-level doses. Moreover, the combination of acupoint and DS exerts a synergistic improvement in inflammation and joint damage. Cytokine and T cell analyses in the serum indicated that the application of DS-MMAN suppressed the levels of pro-inflammatory factors and increased the levels of anti-inflammatory factors. Furthermore, the acupoint administration via DS-MMAN could decrease the accumulation of DS in the liver and kidneys, which may express better therapeutic efficiency and low toxicity. The present study demonstrated that the acupuncture needle has the potential to build a bridge between acupuncture and medication, which would be a promising alternative to the combination of traditional and modern medicine.
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Affiliation(s)
- Chen Wang
- China Academy of Chinese Medical Sciences Institute of Chinese Materia Medica, Dongzhimen Nei Ave. Nanxiaojie 16#, Dongcheng District, Beijing 100700, China
- School of Life Sciences, Beijing University of Chinese Medicine, North 3rd Ring East Road 11#, Chaoyang District, Beijing 100029, China
| | - Jinlai Cheng
- China Academy of Chinese Medical Sciences Institute of Chinese Materia Medica, Dongzhimen Nei Ave. Nanxiaojie 16#, Dongcheng District, Beijing 100700, China
| | - Lixia Song
- China Academy of Chinese Medical Sciences Institute of Chinese Materia Medica, Dongzhimen Nei Ave. Nanxiaojie 16#, Dongcheng District, Beijing 100700, China
| | - Ziyu Zhou
- China Academy of Chinese Medical Sciences Institute of Chinese Materia Medica, Dongzhimen Nei Ave. Nanxiaojie 16#, Dongcheng District, Beijing 100700, China
| | - Qinghe Zhao
- China Academy of Chinese Medical Sciences Institute of Chinese Materia Medica, Dongzhimen Nei Ave. Nanxiaojie 16#, Dongcheng District, Beijing 100700, China
| | - Yu Zhao
- China Academy of Chinese Medical Sciences Institute of Chinese Materia Medica, Dongzhimen Nei Ave. Nanxiaojie 16#, Dongcheng District, Beijing 100700, China
| | - Huajing Wang
- China Academy of Chinese Medical Sciences Institute of Chinese Materia Medica, Dongzhimen Nei Ave. Nanxiaojie 16#, Dongcheng District, Beijing 100700, China
| | - Yuqing Tan
- China Academy of Chinese Medical Sciences Institute of Chinese Materia Medica, Dongzhimen Nei Ave. Nanxiaojie 16#, Dongcheng District, Beijing 100700, China
| | - Baosheng Zhao
- Beijing Research Institute of Chinese Medicine, Beijing University of Chinese Medicine, North 3rd Ring East Road 11#, Chaoyang District, Beijing 100029, China
| | - Miyi Yang
- China Academy of Chinese Medical Sciences Institute of Chinese Materia Medica, Dongzhimen Nei Ave. Nanxiaojie 16#, Dongcheng District, Beijing 100700, China
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22
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Han Y, Ai L, Song L, Zhou Y, Chen D, Sha S, Ji R, Li Q, Bu Q, Pan X, Zhai X, Cui M, Duan J, Yang J, Chaudhury D, Hu A, Liu H, Han MH, Cao JL, Zhang H. Midbrain glutamatergic circuit mechanism of resilience to socially transferred allodynia in male mice. Nat Commun 2024; 15:4947. [PMID: 38858350 PMCID: PMC11164890 DOI: 10.1038/s41467-024-49340-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 05/28/2024] [Indexed: 06/12/2024] Open
Abstract
The potential brain mechanism underlying resilience to socially transferred allodynia remains unknown. Here, we utilize a well-established socially transferred allodynia paradigm to segregate male mice into pain-susceptible and pain-resilient subgroups. Brain screening results show that ventral tegmental area glutamatergic neurons are selectively activated in pain-resilient mice as compared to control and pain-susceptible mice. Chemogenetic manipulations demonstrate that activation and inhibition of ventral tegmental area glutamatergic neurons bi-directionally regulate resilience to socially transferred allodynia. Moreover, ventral tegmental area glutamatergic neurons that project specifically to the nucleus accumbens shell and lateral habenula regulate the development and maintenance of the pain-resilient phenotype, respectively. Together, we establish an approach to explore individual variations in pain response and identify ventral tegmental area glutamatergic neurons and related downstream circuits as critical targets for resilience to socially transferred allodynia and the development of conceptually innovative analgesics.
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Affiliation(s)
- Yi Han
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Lin Ai
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Lingzhen Song
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Yu Zhou
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Dandan Chen
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Sha Sha
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Ran Ji
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Qize Li
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Qingyang Bu
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Xiangyu Pan
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Xiaojing Zhai
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Mengqiao Cui
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Jiawen Duan
- Department of Mental Health and Public Health, Faculty of Life and Health Sciences, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, 518055, PR China
| | - Junxia Yang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - Dipesh Chaudhury
- Division of Science, New York University Abu Dhabi (NYUAD), Saadiyat Island, 129188, United Arab Emirates
| | - Ankang Hu
- The Animal Facility of Xuzhou Medical University, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China
| | - He Liu
- Department of Anesthesiology, Huzhou Central Hospital, Huzhou, Zhejiang, 313000, PR China
| | - Ming-Hu Han
- Department of Mental Health and Public Health, Faculty of Life and Health Sciences, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, 518055, PR China.
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA.
| | - Jun-Li Cao
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China.
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China.
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China.
- Department of Anesthesiology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China.
| | - Hongxing Zhang
- Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China.
- Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China.
- NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, PR China.
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23
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Liu F, Liao H, Fang Z, Tang Q, Liu Y, Li C, Zhou C, Zhang Y, Shen J. MicroRNA-6954-3p down-regulation contributes to orofacial neuropathic pain in mice via targeting voltage-gated sodium channel β2 subunit protein. THE JOURNAL OF PAIN 2024:104598. [PMID: 38866121 DOI: 10.1016/j.jpain.2024.104598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 05/30/2024] [Accepted: 06/03/2024] [Indexed: 06/14/2024]
Abstract
The voltage-gated sodium channel β2 subunit protein (SCN2B) plays a crucial role in neuropathic pain. However, the role and mechanisms of SCN2B in orofacial neuropathic pain are still unclear. This study aimed to investigate the upstream regulatory mechanisms of SCN2B in the trigeminal ganglion (TG) underlying orofacial neuropathic pain. Chronic constriction injury of the infraorbital nerve (CCI-ION) of mice was performed to establish the model of orofacial neuropathic pain. Von-Frey filament test was performed to detect the head withdrawal threshold (HWT) of mice. RT-qPCR, WB, FISH, and IF were used to detect the expression and distribution of SCN2B and miR-6954-3p in the TG of mice. A luciferase activity assay was carried out to prove the binding between SCN2B mRNA and miR-6954-3p. After the CCI-ION surgery, the levels of Scn2b mRNA and protein significantly increased and miR-6954-3p decreased in the TG of mice with decreasing HWT. IF staining revealed that SCN2B was expressed specifically in the TG neurons. Silencing SCN2B in the TG of CCI-ION mice significantly increased the HWT. Importantly, the 3' untranslated region (UTR) of Scn2b mRNA was proved to bind with miR-6954-3p. FISH and IF staining demonstrated that miR-6954-3p was expressed in TG neurons and co-expressed with SCN2B. Furthermore, intra-ganglionic injection of miR-6954-3p agomir into the TG of CCI-ION mice resulted in the down-regulation of SCN2B and increased the HWT. These findings suggest that the down-regulation of miR-6954-3p in the TG promotes orofacial neuropathic pain by promoting SCN2B expression following trigeminal nerve injury. PERSPECTIVE: This study points to the important role of SCN2B in orofacial neuropathic pain. Furthermore, miR-6954-3p is proven to regulate the expression of SCN2B by binding to the 3' UTR of Scn2b mRNA. These findings indicate that SCN2B and miR-6954-3p are potential therapeutic targets for the treatment of orofacial neuropathic pain.
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Affiliation(s)
- Fei Liu
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, China
| | - Honglin Liao
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, China
| | - Zhonghan Fang
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, China
| | - Qingfeng Tang
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, China
| | - Yajing Liu
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, China
| | - Chunjie Li
- Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Chen Zhou
- Laboratory of Anesthesia and Critical Care Medicine & Translational Neuroscience Center & West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Yanyan Zhang
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, China
| | - Jiefei Shen
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, China.
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24
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Contreras KM, Buzzi B, Vaughn J, Caillaud M, Altarifi AA, Olszewski E, Walentiny DM, Beardsley PM, Damaj MI. Characterization and validation of a spontaneous acute and protracted oxycodone withdrawal model in male and female mice. Pharmacol Biochem Behav 2024:173795. [PMID: 38834159 DOI: 10.1016/j.pbb.2024.173795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 05/27/2024] [Accepted: 05/30/2024] [Indexed: 06/06/2024]
Abstract
Opioid use disorder (OUD) is a serious health problem that may lead to physical dependence, in addition to affective disorders. Preclinical models are essential for studying the neurobiology of and developing pharmacotherapies to treat these problems. Historically, chronic morphine injections have most often been used to produce opioid-dependent animals, and withdrawal signs indicative of dependence were precipitated by administering an opioid antagonist. In the present studies, we have developed and validated a model of dependence on oxycodone (a widely prescribed opioid) during spontaneous withdrawal in male and female C57BL/6J mice. Dependence was induced by chronically administering oxycodone through osmotic minipumps at different doses for 7 days. Somatic withdrawal signs were measured after 3, 6, 24, and 48 h following minipump removal. Additionally, sensitivity to mechanical, thermal, and cold stimuli, along with anxiety-like behavior, were also measured. Our results indicated that spontaneous withdrawal following discontinuation of oxycodone produced an increase in total withdrawal signs after 60 and 120 mg/kg/day regimens of oxycodone administration. These signs were reversed by the administration of clinically approved medications for OUD. In general, both female and male mice showed similar profiles of somatic signs of spontaneous withdrawal. Spontaneous withdrawal also resulted in mechanical and cold hypersensitivity lasting for 24 and 14 days, respectively, and produced anxiety-like behaviors after 2 and 3 weeks following oxycodone removal. These results help validate a new model of oxycodone dependence, including the temporally distinct emergence of somatic, hyperalgesic, and anxiety-like behaviors, potentially useful for mechanistic and translational studies of opioid dependence.
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Affiliation(s)
- Katherine M Contreras
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, USA
| | - Belle Buzzi
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, USA
| | - Julian Vaughn
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, USA
| | - Martial Caillaud
- Nantes Université, INSERM, UMR1235-TENS, The Enteric Nervous System in Gut and Brain Diseases, Nantes, France
| | - Ahmad A Altarifi
- Department of Pharmacology, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Emily Olszewski
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, USA
| | - D Matthew Walentiny
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, USA
| | - Patrick M Beardsley
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, USA; Center for Biomarker Research & Precision Medicine, Virginia Commonwealth University School of Pharmacy, Richmond, VA, USA
| | - M Imad Damaj
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, Richmond, VA, USA; Translational Research Initiative for Pain and Neuropathy at Virginia Commonwealth University, Richmond, VA, USA.
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25
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Cruz CJ, Yeater TD, Griffith JL, Allen KD. Vagotomy accelerates the onset of symptoms during early disease progression and worsens joint-level pathogenesis in a male rat model of chronic knee osteoarthritis. OSTEOARTHRITIS AND CARTILAGE OPEN 2024; 6:100467. [PMID: 38655014 PMCID: PMC11035058 DOI: 10.1016/j.ocarto.2024.100467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 04/03/2024] [Indexed: 04/26/2024] Open
Abstract
Objective Low vagal tone is common in osteoarthritis (OA) comorbidities and results in greater peripheral inflammation. Characterizing vagal tone's role in OA pathogenesis may offer insights into OA's influences beyond the articular joint. We hypothesized that low vagal tone would accelerate onset of OA-related gait changes and worsen joint damage in a rat knee OA model. Methods Knee OA was induced in male Sprague Dawley rats by transecting the medial collateral ligament and medial meniscus. Then, left cervical vagus nerve transection (VGX, n = 9) or sham VGX (non-VGX, n = 6) was performed. Gait and tactile sensitivity were assessed at baseline and across 12 weeks, with histology and systemic inflammation evaluated at endpoint. Results At week 4, VGX animals showed limping gait characteristics through shifted stance times from their OA to non-OA limb (p = 0.055; stance time imbalance = 1.6 ± 1.6%) and shifted foot strike locations (p < 0.001; spatial symmetry = 48.4 ± 0.835%), while non-VGX animals walked with a balanced and symmetric gait. Also at week 4, while VGX animals had a mechanical sensitivity (50% withdrawal threshold) of 13.97 ± 7.70 compared to the non-VGX animal sensitivity of 29.74 ± 9.43, this difference was not statistically significant. Histologically, VGX animals showed thinner tibial cartilage and greater subchondral bone area than non-VGX animals (p = 0.076; VGX: 0.80 ± 0.036 mm2; non-VGX: 0.736 ± 0.066 mm2). No group differences in systemic inflammation were observed at endpoint. Conclusions VGX resulted in quicker onset of OA-related symptoms but remained unchanged at later timepoints. VGX also had thinner cartilage and abnormal bone remodeling than non-VGX. Overall, low vagal tone had mild effects on OA symptoms and joint remodeling, and not at the level seen in common OA comorbidities.
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Affiliation(s)
- Carlos J. Cruz
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
- Pain Research and Intervention Center of Excellence, University of Florida, Gainesville, FL, USA
| | - Taylor D. Yeater
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
- Pain Research and Intervention Center of Excellence, University of Florida, Gainesville, FL, USA
| | - Jacob L. Griffith
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
- Pain Research and Intervention Center of Excellence, University of Florida, Gainesville, FL, USA
| | - Kyle D. Allen
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
- Department of Orthopaedic Surgery and Sports Medicine, College of Medicine, University of Florida, Gainesville, FL, USA
- Pain Research and Intervention Center of Excellence, University of Florida, Gainesville, FL, USA
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Norris MR, Becker LJ, Bilbily J, Chang YH, Borges G, Dunn SS, Madasu MK, Vazquez CR, Cariello SA, Al-Hasani R, Creed MC, McCall JG. Spared nerve injury decreases motivation in long-access homecage-based operant tasks in mice. Pain 2024; 165:1247-1265. [PMID: 38015628 PMCID: PMC11095834 DOI: 10.1097/j.pain.0000000000003123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 10/10/2023] [Indexed: 11/30/2023]
Abstract
ABSTRACT Neuropathic pain causes both sensory and emotional maladaptation. Preclinical animal studies of neuropathic pain-induced negative affect could result in novel insights into the mechanisms of chronic pain. Modeling pain-induced negative affect, however, is variable across research groups and conditions. The same injury may or may not produce robust negative affective behavioral responses across different species, strains, and laboratories. Here, we sought to identify negative affective consequences of the spared nerve injury model on C57BL/6J male and female mice. We found no significant effect of spared nerve injury across a variety of approach-avoidance conflict, hedonic choice, and coping strategy assays. We hypothesized these inconsistencies may stem in part from the short test duration of these assays. To test this hypothesis, we used the homecage-based Feeding Experimentation Device version 3 to conduct 12-hour, overnight progressive ratio testing to determine whether mice with chronic spared nerve injury had decreased motivation to earn palatable food rewards. Our data demonstrate that despite equivalent task learning, spared nerve injury mice are less motivated to work for a sugar pellet than sham controls. Furthermore, when we normalized behavioral responses across all the behavioral assays we tested, we found that a combined normalized behavioral score is predictive of injury state and significantly correlates with mechanical thresholds. Together, these results suggest that homecage-based operant behaviors provide a useful platform for modeling nerve injury-induced negative affect and that valuable pain-related information can arise from agglomerative data analyses across behavioral assays-even when individual inferential statistics do not demonstrate significant mean differences.
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Affiliation(s)
- Makenzie R. Norris
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, MO, USA; Department of Pharmaceutical and Administrative Sciences, St. Louis College of Pharmacy, St. Louis, MO, USA; Center for Clinical Pharmacology, St. Louis College of Pharmacy and Washington University School of Medicine, St. Louis, MO, USA; Washington University Pain Center, Washington University in St. Louis, St. Louis, MO, USA
- Division of Biology and Biomedical Sciences, Washington University School of Medicine, St. Louis, MO, USA
| | - Léa J. Becker
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, MO, USA; Department of Pharmaceutical and Administrative Sciences, St. Louis College of Pharmacy, St. Louis, MO, USA; Center for Clinical Pharmacology, St. Louis College of Pharmacy and Washington University School of Medicine, St. Louis, MO, USA; Washington University Pain Center, Washington University in St. Louis, St. Louis, MO, USA
| | - John Bilbily
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, MO, USA; Department of Pharmaceutical and Administrative Sciences, St. Louis College of Pharmacy, St. Louis, MO, USA; Center for Clinical Pharmacology, St. Louis College of Pharmacy and Washington University School of Medicine, St. Louis, MO, USA; Washington University Pain Center, Washington University in St. Louis, St. Louis, MO, USA
- Department of Psychiatry, Washington University in St. Louis, St. Louis, MO, USA
| | - Yu-Hsuan Chang
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, MO, USA; Department of Pharmaceutical and Administrative Sciences, St. Louis College of Pharmacy, St. Louis, MO, USA; Center for Clinical Pharmacology, St. Louis College of Pharmacy and Washington University School of Medicine, St. Louis, MO, USA; Washington University Pain Center, Washington University in St. Louis, St. Louis, MO, USA
- Division of Biology and Biomedical Sciences, Washington University School of Medicine, St. Louis, MO, USA
| | - Gustavo Borges
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, MO, USA; Department of Pharmaceutical and Administrative Sciences, St. Louis College of Pharmacy, St. Louis, MO, USA; Center for Clinical Pharmacology, St. Louis College of Pharmacy and Washington University School of Medicine, St. Louis, MO, USA; Washington University Pain Center, Washington University in St. Louis, St. Louis, MO, USA
| | - Samantha S. Dunn
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, MO, USA; Department of Pharmaceutical and Administrative Sciences, St. Louis College of Pharmacy, St. Louis, MO, USA; Center for Clinical Pharmacology, St. Louis College of Pharmacy and Washington University School of Medicine, St. Louis, MO, USA; Washington University Pain Center, Washington University in St. Louis, St. Louis, MO, USA
- Division of Biology and Biomedical Sciences, Washington University School of Medicine, St. Louis, MO, USA
| | - Manish K. Madasu
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, MO, USA; Department of Pharmaceutical and Administrative Sciences, St. Louis College of Pharmacy, St. Louis, MO, USA; Center for Clinical Pharmacology, St. Louis College of Pharmacy and Washington University School of Medicine, St. Louis, MO, USA; Washington University Pain Center, Washington University in St. Louis, St. Louis, MO, USA
| | - Chayla R. Vazquez
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, MO, USA; Department of Pharmaceutical and Administrative Sciences, St. Louis College of Pharmacy, St. Louis, MO, USA; Center for Clinical Pharmacology, St. Louis College of Pharmacy and Washington University School of Medicine, St. Louis, MO, USA; Washington University Pain Center, Washington University in St. Louis, St. Louis, MO, USA
- Division of Biology and Biomedical Sciences, Washington University School of Medicine, St. Louis, MO, USA
| | - Solana A. Cariello
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, MO, USA; Department of Pharmaceutical and Administrative Sciences, St. Louis College of Pharmacy, St. Louis, MO, USA; Center for Clinical Pharmacology, St. Louis College of Pharmacy and Washington University School of Medicine, St. Louis, MO, USA; Washington University Pain Center, Washington University in St. Louis, St. Louis, MO, USA
| | - Ream Al-Hasani
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, MO, USA; Department of Pharmaceutical and Administrative Sciences, St. Louis College of Pharmacy, St. Louis, MO, USA; Center for Clinical Pharmacology, St. Louis College of Pharmacy and Washington University School of Medicine, St. Louis, MO, USA; Washington University Pain Center, Washington University in St. Louis, St. Louis, MO, USA
- Division of Biology and Biomedical Sciences, Washington University School of Medicine, St. Louis, MO, USA
| | - Meaghan C. Creed
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, MO, USA; Department of Pharmaceutical and Administrative Sciences, St. Louis College of Pharmacy, St. Louis, MO, USA; Center for Clinical Pharmacology, St. Louis College of Pharmacy and Washington University School of Medicine, St. Louis, MO, USA; Washington University Pain Center, Washington University in St. Louis, St. Louis, MO, USA
- Division of Biology and Biomedical Sciences, Washington University School of Medicine, St. Louis, MO, USA
- Department of Psychiatry, Washington University in St. Louis, St. Louis, MO, USA
| | - Jordan G. McCall
- Department of Anesthesiology, Washington University in St. Louis, St. Louis, MO, USA; Department of Pharmaceutical and Administrative Sciences, St. Louis College of Pharmacy, St. Louis, MO, USA; Center for Clinical Pharmacology, St. Louis College of Pharmacy and Washington University School of Medicine, St. Louis, MO, USA; Washington University Pain Center, Washington University in St. Louis, St. Louis, MO, USA
- Division of Biology and Biomedical Sciences, Washington University School of Medicine, St. Louis, MO, USA
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Maiarù M, Leese C, Silva-Hucha S, Fontana-Giusti S, Tait L, Tamagnini F, Davletov B, Hunt SP. Substance P-Botulinum Mediates Long-term Silencing of Pain Pathways that can be Re-instated with a Second Injection of the Construct in Mice. THE JOURNAL OF PAIN 2024; 25:104466. [PMID: 38218509 DOI: 10.1016/j.jpain.2024.01.331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 01/05/2024] [Accepted: 01/06/2024] [Indexed: 01/15/2024]
Abstract
Chronic pain presents an enormous personal and economic burden and there is an urgent need for effective treatments. In a mouse model of chronic neuropathic pain, selective silencing of key neurons in spinal pain signalling networks with botulinum constructs resulted in a reduction of pain behaviours associated with the peripheral nerve. However, to establish clinical relevance it was important to know how long this silencing period lasted. Now, we show that neuronal silencing and the concomitant reduction of neuropathic mechanical and thermal hypersensitivity lasts for up to 120d following a single injection of botulinum construct. Crucially, we show that silencing and analgesia can then be reinstated with a second injection of the botulinum conjugate. Here we demonstrate that single doses of botulinum-toxin conjugates are a powerful new way of providing long-term neuronal silencing and pain relief. PERSPECTIVE: This research demonstrates that botulinum-toxin conjugates are a powerful new way of providing long-term neuronal silencing without toxicity following a single injection of the conjugate and have the potential for repeated dosing when silencing reverses.
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Affiliation(s)
- Maria Maiarù
- Department of Pharmacology, School of Pharmacy, University of Reading; Room 109, Hopkins Building, Whiteknights Campus, Reading RG6 6UB, United Kingdom
| | - Charlotte Leese
- Department of Biomedical Science, Firth Court, University of Sheffield; Sheffield S10 2TN
| | - Silvia Silva-Hucha
- Department of Cell and Developmental Biology, Medawar Building, University College London; Gower Street, London, WC1E 6BT, United Kingdom
| | - Sofia Fontana-Giusti
- Department of Pharmacology, School of Pharmacy, University of Reading; Room 109, Hopkins Building, Whiteknights Campus, Reading RG6 6UB, United Kingdom
| | - Luke Tait
- Cardiff University Brain Research Imaging Centre, Cardiff University; Cardiff, United Kingdom
| | - Francesco Tamagnini
- Department of Pharmacology, School of Pharmacy, University of Reading; Room 109, Hopkins Building, Whiteknights Campus, Reading RG6 6UB, United Kingdom
| | - Bazbek Davletov
- Department of Biomedical Science, Firth Court, University of Sheffield; Sheffield S10 2TN
| | - Stephen P Hunt
- Department of Cell and Developmental Biology, Medawar Building, University College London; Gower Street, London, WC1E 6BT, United Kingdom
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28
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Schafer RM, Giancotti LA, Davis DJ, Larrea IG, Farr SA, Salvemini D. Behavioral characterization of G-protein-coupled receptor 160 knockout mice. Pain 2024; 165:1361-1371. [PMID: 38198232 PMCID: PMC11090760 DOI: 10.1097/j.pain.0000000000003136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 09/23/2023] [Indexed: 01/12/2024]
Abstract
ABSTRACT Neuropathic pain is a devastating condition where current therapeutics offer little to no pain relief. Novel nonnarcotic therapeutic targets are needed to address this growing medical problem. Our work identified the G-protein-coupled receptor 160 (GPR160) as a potential target for therapeutic intervention. However, the lack of small-molecule ligands for GPR160 hampers our understanding of its role in health and disease. To address this void, we generated a global Gpr160 knockout (KO) mouse using CRISPR-Cas9 genome editing technology to validate the contributions of GPR160 in nociceptive behaviors in mice. Gpr160 KO mice are healthy and fertile, with no observable physical abnormalities. Gpr160 KO mice fail to develop behavioral hypersensitivities in a model of neuropathic pain caused by constriction of the sciatic nerve. On the other hand, responses of Gpr160 KO mice in the hot-plate and tail-flick assays are not affected. We recently deorphanized GPR160 and identified cocaine- and amphetamine-regulated transcript peptide (CARTp) as a potential ligand. Using Gpr160 KO mice, we now report that the development of behavioral hypersensitivities after intrathecal or intraplantar injections of CARTp are dependent on GPR160. Cocaine- and amphetamine-regulated transcript peptide plays a role in various affective behaviors, such as anxiety, depression, and cognition. There are no differences in learning, memory, and anxiety between Gpr160 KO mice and their age-matched and sex-matched control floxed mice. Results from these studies support the pronociceptive roles of CARTp/GPR160 and GPR160 as a potential therapeutic target for treatment of neuropathic pain.
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Affiliation(s)
- Rachel M Schafer
- Department of Pharmacology and Physiology School of Medicine and Institute for Translational Neuroscience, Saint Louis University School of Medicine, 1402 South Grand Blvd. 63104, St. Louis, Missouri, USA
| | - Luigino A Giancotti
- Department of Pharmacology and Physiology School of Medicine and Institute for Translational Neuroscience, Saint Louis University School of Medicine, 1402 South Grand Blvd. 63104, St. Louis, Missouri, USA
| | - Daniel J Davis
- Animal Modeling Core, University of Missouri, Columbia, Missouri, USA
| | - Ivonne G Larrea
- Department of Pharmacology and Physiology School of Medicine and Institute for Translational Neuroscience, Saint Louis University School of Medicine, 1402 South Grand Blvd. 63104, St. Louis, Missouri, USA
| | - Susan A Farr
- Department of Pharmacology and Physiology School of Medicine and Institute for Translational Neuroscience, Saint Louis University School of Medicine, 1402 South Grand Blvd. 63104, St. Louis, Missouri, USA
- Department of Internal Medicine-Geriatrics, Saint Louis School of Medicine, St. Louis, MO, USA
- VA Medical Center, St Louis. MO 63106, USA
| | - Daniela Salvemini
- Department of Pharmacology and Physiology School of Medicine and Institute for Translational Neuroscience, Saint Louis University School of Medicine, 1402 South Grand Blvd. 63104, St. Louis, Missouri, USA
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29
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Rodrigues P, Frare JM, Peres DS, Viero FT, Ruviaro NA, Dos Santos Stein C, da Silva Brum E, Moresco RN, Oliveira SM, Bochi GV, Trevisan G. Increased levels of advanced oxidation protein products (AOPPs) were associated with nociceptive behavior and clinical scores in an experimental progressive autoimmune encephalomyelitis model (PMS-EAE). J Neurochem 2024; 168:1143-1156. [PMID: 38372436 DOI: 10.1111/jnc.16081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 01/17/2024] [Accepted: 01/22/2024] [Indexed: 02/20/2024]
Abstract
Multiple sclerosis (MS) is a neurodegenerative disease that affects the central nervous system (CNS) generating neuropathic pain and anxiety. Primary progressive MS (PPMS) is the most disabling clinical form, and the patients present an intense neurodegenerative process. In this context, the advanced oxidation protein products (AOPPs) are oxidized compounds and their accumulation in plasma has been related to clinical disability in MS patients. However, the involvement of AOPPs in neuropathic pain- and anxiety-like symptoms was not previously evaluated. To assess this, female mice C57BL/6J were used to induce progressive experimental autoimmune encephalomyelitis (PMS-EAE). Clinical score, weight, strength of plantar pressure, rotarod test, mechanical allodynia, and cold hypersensitivity were evaluated before induction (baseline) and on days 7th, 10th, and 14th post-immunization. We assessed nest building, open field, and elevated plus-maze tests 13 days post-immunization. Animals were killed at 14 days post-immunization; then, AOPPs levels, NADPH oxidase, and myeloperoxidase (MPO) activity were measured in the prefrontal cortex, hippocampus, and spinal cord samples. The clinical score increased 14th post-immunization without changes in weight and mobility. Reduced paw strength, mechanical allodynia, and cold allodynia increased in the PMS-EAE animals. PMS-EAE mice showed spontaneous nociception and anxiety-like behavior. AOPPs concentration, NADPH oxidase, and MPO activity increase in CNS structures. Multivariate analyses indicated that the rise of AOPPs levels, NADPH oxidase, and MPO activity influenced the clinical score and cold allodynia. Thus, we indicated the association between non-stimuli painful perception, anxiety-like, and CNS oxidative damage in the PMS-EAE model.
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Affiliation(s)
- Patrícia Rodrigues
- Graduate Program in Pharmacology, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Julia Maria Frare
- Graduate Program in Pharmacology, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Diulle Spat Peres
- Graduate Program in Pharmacology, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Fernanda Tibolla Viero
- Graduate Program in Pharmacology, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Náthaly Andrighetto Ruviaro
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Carolina Dos Santos Stein
- Graduate Program in Pharmaceutical Sciences, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Evelyne da Silva Brum
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Rafael Noal Moresco
- Graduate Program in Pharmaceutical Sciences, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Sara Marchesan Oliveira
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Guilherme Vargas Bochi
- Graduate Program in Pharmacology, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Gabriela Trevisan
- Graduate Program in Pharmacology, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil
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30
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Takano-Mochizuki M, Nakajima K, Ishida T, Ohta E, Moriyama T, Asakura S. A novel animal model of tegafur-induced hand-foot syndrome. Toxicol Appl Pharmacol 2024; 487:116977. [PMID: 38789014 DOI: 10.1016/j.taap.2024.116977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 05/09/2024] [Accepted: 05/20/2024] [Indexed: 05/26/2024]
Abstract
Hand-foot syndrome (HFS) is a common side effect of fluoropyrimidine anticancer drugs and often becomes a dose-limiting manifestation of toxicity once it occurs. The precise mechanism of HFS remains unclear, and effective measures to prevent or relieve it are currently limited. To investigate the pathogenesis of HFS and effective measures for treating or preventing it, establishment of animal models is crucial. Here, we gave male SD rats 170 mg/kg of tegafur (prodrug of 5-FU) daily for 35 days and evaluated their clinical and histopathological characteristics and pain-related behavioral tests. TUNEL-positive apoptotic cells and 5-FU concentrations in the plantar skin were also evaluated to investigate the mode of toxicity. Tegafur treatment induced hypersensitivity to mechanical pressure on the plantar surface beginning in Week 3, with decreased locomotor activity. Focal desquamation of the plantar skin was observed almost concomitantly and gradually worsened to palmar and plantar skin thickening with severe desquamation, cracks, or both. Histopathological lesions in the plantar skin at treatment end included desquamation and thickening, with epidermal cell swelling and spongiosis and focal inflammation in the dermis. The time-course of development and the characteristics of the tegafur-induced skin lesions were highly similar to those in human fluoropyrimidine-induced HFS, indicating that a HFS rat model was successfully established. Localized high concentrations of 5-FU in the palmar and plantar skin, with increased apoptosis, are likely involved in the mode of toxicity. Our model should clarify the pathogenesis of HFS, providing new insights into the best supportive care and prevention.
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Affiliation(s)
- Misato Takano-Mochizuki
- Global Drug Safety, Biopharmaceutical Assessment Unit, Eisai Co., Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 300-2635, Japan; Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8577, Japan.
| | - Kota Nakajima
- Global Drug Safety, Biopharmaceutical Assessment Unit, Eisai Co., Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 300-2635, Japan.
| | - Tomomi Ishida
- Global Drug Metabolism and Pharmacokinetics, Biopharmaceutical Assessment Unit, Eisai Co., Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 300-2635, Japan.
| | - Etsuko Ohta
- Global Drug Safety, Biopharmaceutical Assessment Unit, Eisai Co., Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 300-2635, Japan.
| | - Tomoyuki Moriyama
- Global Drug Safety, Biopharmaceutical Assessment Unit, Eisai Co., Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 300-2635, Japan.
| | - Shoji Asakura
- Global Drug Safety, Biopharmaceutical Assessment Unit, Eisai Co., Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 300-2635, Japan.
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Cheng XL, Ruan YL, Dai JY, Fan HZ, Ling JY, Chen J, Lu WG, Gao XJ, Cao P. 8-shogaol derived from dietary ginger alleviated acute and inflammatory pain by targeting TRPV1. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 128:155500. [PMID: 38484627 DOI: 10.1016/j.phymed.2024.155500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 01/24/2024] [Accepted: 02/26/2024] [Indexed: 05/01/2024]
Abstract
Ginger, a well-known spice plant, has been used widely in medicinal preparations for pain relief. However, little is known about its analgesic components and the underlying mechanism. Here, we ascertained, the efficacy of ginger ingredient 8-Shogaol (8S), on inflammatory pain and tolerance induced by morphine, and probed the role of TRPV1 in its analgesic action using genetic and electrophysiology approaches. Results showed that 8S effectively reduced nociceptive behaviors of mice elicited by chemical stimuli, noxious heat as well as inflammation, and antagonized morphine analgesic tolerance independent on opioid receptor function. Genetic deletion of TRPV1 significantly abolished 8S' analgesia action. Further calcium imaging and patch-clamp recording showed that 8S could specifically activate TRPV1 in TRPV1-expressing HEK293T cells and dorsal root ganglion (DRG) neurons. The increase of [Ca2+]i in DRG was primarily mediated through TRPV1. Mutational and computation studies revealed the key binding sites for the interactions between 8S and TRPV1 included Leu515, Leu670, Ile573, Phe587, Tyr511, and Phe591. Further studies showed that TRPV1 activation evoked by 8S resulted in channel desensitization both in vitro and in vivo, as may be attributed to TRPV1 degradation or TRPV1 withdrawal from the cell surface. Collectively, this work provides the first evidence for the attractive analgesia of 8S in inflammatory pain and morphine analgesic tolerance mediated by targeting pain-sensing TRPV1 channel. 8S from dietary ginger has potential as a candidate drug for the treatment of inflammatory pain.
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Affiliation(s)
- Xiao-Lan Cheng
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, 100 Hongshan Road, Nanjing 210028, China; School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Yong-Lan Ruan
- Department of Neurology, Changzhou Hospital Affiliated to Nanjing University of Chinese Medicine, Changzhou, 213003, China
| | - Jing-Ya Dai
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, 100 Hongshan Road, Nanjing 210028, China; Wanbei Health Vocational College, Suzhou, Anhui, 234000, China
| | - Hai-Zhen Fan
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, 100 Hongshan Road, Nanjing 210028, China
| | - Jin-Ying Ling
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, 100 Hongshan Road, Nanjing 210028, China
| | - Jiao Chen
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, 100 Hongshan Road, Nanjing 210028, China
| | - Wu-Guang Lu
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, 100 Hongshan Road, Nanjing 210028, China
| | - Xue-Jiao Gao
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, 100 Hongshan Road, Nanjing 210028, China.
| | - Peng Cao
- Jiangsu Provincial Medical Innovation Center, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, 100 Hongshan Road, Nanjing 210028, China; The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, 100 Minjiang Road, Quzhou, Zhejiang 324000, China.
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Rodrigues Tavares LR, Petrilli LA, Baptista-de-Souza D, Canto-de-Souza L, Planeta CDS, Guimarães FS, Nunes-de-Souza RL, Canto-de-Souza A. Cannabidiol Treatment Shows Therapeutic Efficacy in a Rodent Model of Social Transfer of Pain in Pair-Housed Male Mice. Cannabis Cannabinoid Res 2024; 9:699-713. [PMID: 37074109 DOI: 10.1089/can.2022.0300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2023] Open
Abstract
Introduction: Prosocial behavior refers to sharing emotions and sensations such as pain. Accumulated data indicate that cannabidiol (CBD), a nonpsychotomimetic component of the Cannabis sativa plant, attenuates hyperalgesia, anxiety, and anhedonic-like behavior. Nevertheless, the role of CBD in the social transfer of pain has never been evaluated. In this study, we investigated the effects of acute systemic administration of CBD in mice that cohabited with a conspecific animal suffering from chronic constriction injury. Furthermore, we assessed whether repeated CBD treatment decreases hypernociception, anxiety-like behavior, and anhedonic-like responses in mice undergoing chronic constriction injury and whether this attenuation would be socially transferred to the partner. Materials and Methods: Male Swiss mice were Housed in pairs for 28 days. On the 14th day of living together, animals were then divided into two groups: cagemate nerve constriction (CNC), in which one animal of each partner was subjected to sciatic nerve constriction; and cagemate sham (CS), subjected to the same surgical procedure but without suffering nerve constriction. In Experiments 1, 2, and 3 on day 28 of living together, the cagemates (CNC and CS) animals received a single systemic injection (intraperitoneally) of vehicle or CBD (0.3, 1, 10, or 30 mg/kg). After 30 min, the cagemates were subjected to the elevated plusmaze followed by exposure to the writhing and sucrose splash tests. For chronic treatment (Exp. 4), sham and chronic constriction injury animals received a repeated systemic injection (subcutaneous) of vehicle or CBD (10 mg/kg) for 14 days after the sciatic nerve constriction procedure. On days 28 and 29 sham and chronic constriction injury animals and their cagemates were behaviorally tested. Results and Conclusion: Acute CBD administration attenuated anxiety-like behavior, pain hypersensitivity, and anhedonic-like behavior in cagemates that cohabited with a pair in chronic pain. In addition, repeated CBD treatment reversed the anxiety-like behavior induced by chronic pain and enhanced the mechanical withdrawal thresholds in Von Frey filaments and the grooming time in the sucrose splash test. Moreover, repeated CBD treatment effects were socially transferred to the chronic constriction injury cagemates.
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Affiliation(s)
- Lígia Renata Rodrigues Tavares
- Psychobiology Group, Department of Psychology, CECH-Universidade Federal de São Carlos-UFSCar, São Carlos, Brazil
- Joint Graduate Program in Physiological Sciences UFSCar/UNESP, São Carlos, Brazil
| | - Leonardo Abdelnur Petrilli
- Psychobiology Group, Department of Psychology, CECH-Universidade Federal de São Carlos-UFSCar, São Carlos, Brazil
| | - Daniela Baptista-de-Souza
- Psychobiology Group, Department of Psychology, CECH-Universidade Federal de São Carlos-UFSCar, São Carlos, Brazil
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, Universidade Estadual Paulista-UNESP, Araraquara, Brazil
- Neuroscience and Behavior Institute-IneC, Ribeirão Preto, São Paulo, Brazil
| | - Lucas Canto-de-Souza
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, Universidade Estadual Paulista-UNESP, Araraquara, Brazil
- Neuroscience and Behavior Institute-IneC, Ribeirão Preto, São Paulo, Brazil
| | - Cleopatra da Silva Planeta
- Joint Graduate Program in Physiological Sciences UFSCar/UNESP, São Carlos, Brazil
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, Universidade Estadual Paulista-UNESP, Araraquara, Brazil
| | - Francisco Silveira Guimarães
- Department of Pharmacology, School of Medicine of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Ricardo Luiz Nunes-de-Souza
- Joint Graduate Program in Physiological Sciences UFSCar/UNESP, São Carlos, Brazil
- Laboratory of Pharmacology, School of Pharmaceutical Sciences, Universidade Estadual Paulista-UNESP, Araraquara, Brazil
- Neuroscience and Behavior Institute-IneC, Ribeirão Preto, São Paulo, Brazil
| | - Azair Canto-de-Souza
- Psychobiology Group, Department of Psychology, CECH-Universidade Federal de São Carlos-UFSCar, São Carlos, Brazil
- Joint Graduate Program in Physiological Sciences UFSCar/UNESP, São Carlos, Brazil
- Neuroscience and Behavior Institute-IneC, Ribeirão Preto, São Paulo, Brazil
- Program in Psychology UFSCar, São Carlos, Brazil
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Liu X, Yang W, Zhu C, Sun S, Yang B, Wu S, Wang L, Liu Z, Ge Z. TLR2 Mediates Microglial Activation and Contributes to Central Sensitization in a Recurrent Nitroglycerin-induced Chronic Migraine Model. Mol Neurobiol 2024; 61:3697-3714. [PMID: 38008889 DOI: 10.1007/s12035-023-03781-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Accepted: 11/06/2023] [Indexed: 11/28/2023]
Abstract
Central sensitization is an important pathophysiological mechanism underlying chronic migraine (CM). Previous studies have shown that microglial activation and subsequent inflammation in the trigeminal nucleus caudalis (TNC) contribute to central sensitization. Toll-like receptor 2 (TLR2) is a receptor expressed on the membrane of microglia and participates in central sensitization in inflammatory and chronic pain; however, its role in CM is unclear. Therefore, this study investigated TLR2 involvement in CM in detail. Mice treated with recurrent nitroglycerin (NTG) were used as a CM model. Hyperalgesia was assessed using a 50% paw mechanical threshold and a 50% periorbital threshold on a Von Frey filament pain meter. Western blotting and immunofluorescence analyses were used to detect the expression of TLR2, microglia, c-fos and CGRP in TNC. The expression of inflammatory factors (IL-6, IL-1β、 IL-10、TNF-α and IFN-β1) was detected using quantitative real-time polymerase chain reaction (qRT-PCR). A selective TLR2 antagonist (C29) was systematically administered to observe its effect on hyperalgesia, microglia activation and the expression of c-fos, CGRP and inflammatory factors. Recurrent administration of NTG resulted in acute and chronic hypersensitivity, accompanied by upregulation of TLR2 expression and microglial activation in TNC. C29 partially inhibited pain hypersensitivity. C29 suppressed microglial activation induced by NTG administration. Inhibition of TLR2 reduced the expression of c-fos and CGRP in TNC after NTG treatment. C29 inhibited the expression of inflammatory mediators in TNC. These data showed that microglial TLR2 plays a critical role in the pathogenesis of CM by regulating microglial activation in TNC.
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Affiliation(s)
- Xuejiao Liu
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu, China
| | - Wenping Yang
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Chenlu Zhu
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu, China
| | - Songtang Sun
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu, China
| | - Bin Yang
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu, China
| | - Shouyi Wu
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu, China
| | - Longde Wang
- Expert Workstation of Academician Wang Longde, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu, China
| | - Zhiyan Liu
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu, China.
| | - Zhaoming Ge
- Department of Neurology, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu, China.
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Gao K, Huang Z, Yu W, Wu Y, Liu W, Sun S, Zhang Y, Chen D. Therapeutic mechanisms of modified Jiawei Juanbi decoction in early knee osteoarthritis: A multimodal analysis. Heliyon 2024; 10:e30828. [PMID: 38770333 PMCID: PMC11103480 DOI: 10.1016/j.heliyon.2024.e30828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 04/22/2024] [Accepted: 05/06/2024] [Indexed: 05/22/2024] Open
Abstract
Modified Jiawei Juanbi decoction (MJD) is used for the treatment of early-stage knee osteoarthritis (KOA). Here, modified Jiawei Juanbi decoction (MJD) was employed for the treatment of early-stage knee osteoarthritis (KOA) and its mechanisms were assessed via metabonomics and network pharmacology. A total of 24 male Sprague-Dawley rats were randomly allocated into a normal control group, a model group, and an MJD group (n = 8 rats per group). Each rat group was further equally divided into two subgroups for investigation for either 14 or 28 days. A rat model of early-stage KOA was constructed and rats were treated with MJD. Effects were evaluated based on changes in knee circumference, mechanical withdrawal threshold (MWT) and thermal withdrawal latency (TWL). We also analyzed histopathological changes in articular cartilage. High-resolution mass spectrometry was used to analyze the chemical profile of MJD, identifying 228 components. Using an LC-Q-TOF-MS metabonomics approach, 33 differential metabolites were identified. The relevant pathways significantly associated with MJD include arginine and proline metabolism, vitamin B6 metabolism, as well as the biosynthesis of phenylalanine, tyrosine and tryptophan. The system pharmacology paradigm revealed that MJD contains 1027 components and associates with 1637 genes, of which 862 disease genes are related to osteoarthritis. The construction of the MJD composition-target-KOA network revealed a total of 140 intersection genes. A total of 39 hub genes were identified via integration of betweenness centrality values greater than 100 using CytoHubba. Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis revealed several significantly affected signaling pathways including the HIF-1, AGE-RAGE (in diabetic complications), IL-17, rheumatoid arthritis and TNF pathways. Integrated-omics and network pharmacology approaches revealed a necessity for further detailed investigation focusing on two major targets, namely NOS2 and NOS3, along with their essential metabolite (arginine) and associated pathways (HIF-1 signaling and arginine and proline metabolism). Real-time PCR validated significantly greater downregulation of NOS2 and HIF-1ɑ in the MJD as compared to the model group. Molecular docking analysis further confirmed the binding of active MJD with key active components. Our findings elucidate the impact of MJD on relevant pathophysiological and metabolic networks relevant to KOA and assess the drug efficacy of MJD and its underlying mechanisms of action.
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Affiliation(s)
- Kun Gao
- Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, 518033, China
| | - Zhenyu Huang
- The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Weiji Yu
- Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, 518033, China
| | - Yihong Wu
- Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, 518033, China
| | - Weidong Liu
- Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, 518033, China
| | - Shufen Sun
- Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, 518033, China
| | - Yong Zhang
- Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, 518033, China
| | - Dayu Chen
- Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, 518033, China
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Tam TH, Zhang W, Tu Y, Hicks JL, Farcas S, Kim D, Salter MW. Pain hypersensitivity is dependent on autophagy protein Beclin 1 in males but not females. Cell Rep 2024; 43:114293. [PMID: 38814784 DOI: 10.1016/j.celrep.2024.114293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 03/28/2024] [Accepted: 05/14/2024] [Indexed: 06/01/2024] Open
Abstract
Chronic pain is associated with alterations in fundamental cellular processes. Here, we investigate whether Beclin 1, a protein essential for initiating the cellular process of autophagy, is involved in pain processing and is targetable for pain relief. We find that monoallelic deletion of Becn1 increases inflammation-induced mechanical hypersensitivity in male mice. However, in females, loss of Becn1 does not affect inflammation-induced mechanical hypersensitivity. In males, intrathecal delivery of a Beclin 1 activator, tat-beclin 1, reverses inflammation- and nerve injury-induced mechanical hypersensitivity and prevents mechanical hypersensitivity induced by brain-derived neurotrophic factor (BDNF), a mediator of inflammatory and neuropathic pain. Pain signaling pathways converge on the enhancement of N-methyl-D-aspartate receptors (NMDARs) in spinal dorsal horn neurons. The loss of Becn1 upregulates synaptic NMDAR-mediated currents in dorsal horn neurons from males but not females. We conclude that inhibition of Beclin 1 in the dorsal horn is critical in mediating inflammatory and neuropathic pain signaling pathways in males.
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Affiliation(s)
- Theresa H Tam
- Neurosciences & Mental Health Program, Hospital for Sick Children, Toronto, ON M5G 0A4, Canada; Department of Physiology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Wenbo Zhang
- Neurosciences & Mental Health Program, Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
| | - YuShan Tu
- Neurosciences & Mental Health Program, Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
| | - Janice L Hicks
- Neurosciences & Mental Health Program, Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
| | - Sophia Farcas
- Neurosciences & Mental Health Program, Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
| | - Doyeon Kim
- Neurosciences & Mental Health Program, Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
| | - Michael W Salter
- Neurosciences & Mental Health Program, Hospital for Sick Children, Toronto, ON M5G 0A4, Canada; Department of Physiology, University of Toronto, Toronto, ON M5S 1A8, Canada.
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de Melo Cardoso M, Scussel R, da Silva Abel J, Pereira FO, Cruz LA, da Costa Constante F, De Pieri E, Abelaira HM, Ferreira J, Gomez MV, Rigo FK, Machado-de-Ávila RA. Intravenous administration of recombinant Phα1β: Antinociceptive properties and morphine tolerance reversal in a cancer-associated pain model. Toxicon 2024; 243:107717. [PMID: 38614245 DOI: 10.1016/j.toxicon.2024.107717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 03/12/2024] [Accepted: 04/10/2024] [Indexed: 04/15/2024]
Abstract
Cancer-related pain is considered one of the most prevalent symptoms for those affected by cancer, significantly influencing quality of life and treatment outcomes. Morphine is currently employed for analgesic treatment in this case, however, chronic use of this opioid is limited by the development of analgesic tolerance and adverse effects, such as digestive and neurological disorders. Alternative therapies, such as ion channel blockade, are explored. The toxin Phα1β has demonstrated efficacy in blocking calcium channels, making it a potential candidate for alleviating cancer-related pain. This study aims to assess the antinociceptive effects resulting from intravenous administration of the recombinant form of Phα1β (r-Phα1β) in an experimental model of cancer-related pain in mice, tolerant or not to morphine. The model of cancer-induced pain was used to evaluate these effects, with the injection of B16F10 cells, followed by the administration of the r-Phα1β, and evaluation of the mechanical threshold by the von Frey test. Also, adverse effects were assessed using a score scale, the rotarod, and open field tests. Results indicate that the administration of r-Phα1β provoked antinociception in animals with cancer-induced mechanical hyperalgesia, with or without morphine tolerance. Previous administration of r-Phα1β was able to recover the analgesic activity of morphine in animals tolerant to this opioid. r-Phα1β was proved safe for these parameters, as no adverse effects related to motor and behavioral activity were observed following intravenous administration. This study suggests that the concomitant use of morphine and r-Phα1β could be a viable strategy for pain modulation in cancer patients.
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Affiliation(s)
- Mariana de Melo Cardoso
- Laboratory of Experimental Pathophysiology, Postgraduate Program in Health Sciences, University of the Extreme South Catarinense (UNESC), Criciúma, SC, Brazil; Postgraduate Program in Health Sciences: Infectious Diseases and Tropical Medicine, Faculty of Medicine, Universidade Federal de Minas Gerais, Belo Horizonte, 30130-100, MG, Brazil
| | - Rahisa Scussel
- Laboratory of Experimental Pathophysiology, Postgraduate Program in Health Sciences, University of the Extreme South Catarinense (UNESC), Criciúma, SC, Brazil
| | - Jéssica da Silva Abel
- Laboratory of Experimental Pathophysiology, Postgraduate Program in Health Sciences, University of the Extreme South Catarinense (UNESC), Criciúma, SC, Brazil
| | - Fernando Oriques Pereira
- Laboratory of Experimental Pathophysiology, Postgraduate Program in Health Sciences, University of the Extreme South Catarinense (UNESC), Criciúma, SC, Brazil
| | - Lidiane Anastácio Cruz
- Laboratory of Experimental Pathophysiology, Postgraduate Program in Health Sciences, University of the Extreme South Catarinense (UNESC), Criciúma, SC, Brazil
| | - Franciane da Costa Constante
- Laboratory of Experimental Pathophysiology, Postgraduate Program in Health Sciences, University of the Extreme South Catarinense (UNESC), Criciúma, SC, Brazil
| | - Ellen De Pieri
- Laboratory of Experimental Pathophysiology, Postgraduate Program in Health Sciences, University of the Extreme South Catarinense (UNESC), Criciúma, SC, Brazil
| | - Helena Mendes Abelaira
- Laboratory of Experimental Pathophysiology, Postgraduate Program in Health Sciences, University of the Extreme South Catarinense (UNESC), Criciúma, SC, Brazil
| | - Juliano Ferreira
- Department of Pharmacology, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Marcus Vinícius Gomez
- Graduate Program in Health Sciences, Institute of Education and Research, Santa Casa de Belo Horizonte, Belo Horizonte, MG, Brazil; Center of Technology in Molecular Medicine, School of Medicine, Federal University of Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Flávia Karine Rigo
- Laboratory of Experimental Pathophysiology, Postgraduate Program in Health Sciences, University of the Extreme South Catarinense (UNESC), Criciúma, SC, Brazil
| | - Ricardo Andrez Machado-de-Ávila
- Laboratory of Experimental Pathophysiology, Postgraduate Program in Health Sciences, University of the Extreme South Catarinense (UNESC), Criciúma, SC, Brazil.
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Wang C, Yang X, Gao T, Zhao Y, Yang Y, Li X, Yang Y, Yi T, Wang Y, Mi W. Astroglial morphological changes in periaqueductal grey in different pain and itch mice models. Behav Brain Res 2024; 471:115075. [PMID: 38815698 DOI: 10.1016/j.bbr.2024.115075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 05/14/2024] [Accepted: 05/27/2024] [Indexed: 06/01/2024]
Abstract
BACKGROUND The periaqueductal gray (PAG) plays a well-established pivotal role in the descending pain modulatory circuit. The objective of this study was to investigate morphological changes in the astroglia in models that are commonly used in pain and itch studies. METHODS Five different mouse models of pain, as well as two models of chronic itch, were established using complete Freund's adjuvant (CFA), spared nerve injury (SNI), bone cancer pain (BCP), cisplatin (CIS), and paclitaxel (PTX) for pain, and diphenylcyclopropenone (DCP) and acetone and diethyl ether followed by water (AEW) for chronic itch. von Frey tests and video recordings were employed to assess pain and itching behaviors. The immunofluorescence of S100β, pSTAT3, and glial fibrillary acidic protein (GFAP) was examined. Two- and three-dimensional studies were used to evaluate changes in astrocyte morphology. RESULTS Significant scratching was caused by DCP and AEW, whereas the administration of CFA, SNI, BCP, CIS, and PTX produced clear mechanical allodynia. The expression of GFAP in the lPAG/vlPAG was upregulated in CFA, SNI, BCP, CIS, PTX, and DCP mice but decreased in AEW mice. According to Sholl analysis, CFA, SNI, PTX, and BCP mice showed substantially higher astrocyte intersections in the vlPAG, whereas CFA, SNI, BCP, CIS, and DCP mice presented longer peak lengths. In three-dimensional analysis, CFA, SNI, PTX, and DCP mice showed increased astrocyte surface areas, while CIS and AEW mice showed both reduced surface areas and/or volumes of astrocytes. CONCLUSION The findings showed that different pain and itching conditions have different astrocyte morphologies, and these variations in morphological changes help to explain the pathophysiology of these conditions.
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Affiliation(s)
- Chenghao Wang
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China; College of Sports Medicine and Rehabilitation, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an 271016, China
| | - Xiaotong Yang
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Tianchi Gao
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Yuyu Zhao
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Yayue Yang
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Xiaochen Li
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Yachen Yang
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Ting Yi
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Yanqing Wang
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Wenli Mi
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Science, Institutes of Integrative Medicine, Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Shanghai Medical College, Fudan University, Shanghai 200032, China.
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Son H, Zhang Y, Shannonhouse J, Gomez R, Kim YS. PACAP38/mast-cell-specific receptor axis mediates repetitive stress-induced headache in mice. J Headache Pain 2024; 25:87. [PMID: 38802819 PMCID: PMC11131290 DOI: 10.1186/s10194-024-01786-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Accepted: 05/07/2024] [Indexed: 05/29/2024] Open
Abstract
BACKGROUND Pain, an evolutionarily conserved warning system, lets us recognize threats and motivates us to adapt to those threats. Headache pain from migraine affects approximately 15% of the global population. However, the identity of any putative threat that migraine or headache warns us to avoid is unknown because migraine pathogenesis is poorly understood. Here, we show that a stress-induced increase in pituitary adenylate cyclase-activating polypeptide-38 (PACAP38), known as an initiator of allosteric load inducing unbalanced homeostasis, causes headache-like behaviour in male mice via mas-related G protein-coupled receptor B2 (MrgprB2) in mast cells. METHODS The repetitive stress model and dural injection of PACAP38 were performed to induce headache behaviours. We assessed headache behaviours using the facial von Frey test and the grimace scale in wild-type and MrgprB2-deficient mice. We further examined the activities of trigeminal ganglion neurons using in vivo Pirt-GCaMP Ca2+ imaging of intact trigeminal ganglion (TG). RESULTS Repetitive stress and dural injection of PACAP38 induced MrgprB2-dependent headache behaviours. Blood levels of PACAP38 were increased after repetitive stress. PACAP38/MrgprB2-induced mast cell degranulation sensitizes the trigeminovascular system in dura mater. Moreover, using in vivo intact TG Pirt-GCaMP Ca2+ imaging, we show that stress or/and elevation of PACAP38 sensitized the TG neurons via MrgprB2. MrgprB2-deficient mice showed no sensitization of TG neurons or mast cell activation. We found that repetitive stress and dural injection of PACAP38 induced headache behaviour through TNF-a and TRPV1 pathways. CONCLUSIONS Our findings highlight the PACAP38-MrgprB2 pathway as a new target for the treatment of stress-related migraine headache. Furthermore, our results pertaining to stress interoception via the MrgprB2/PACAP38 axis suggests that migraine headache warns us of stress-induced homeostatic imbalance.
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Affiliation(s)
- Hyeonwi Son
- Department of Oral & Maxillofacial Surgery, School of Dentistry, University of Texas Health Science Center, San Antonio, TX, USA
| | - Yan Zhang
- Department of Oral & Maxillofacial Surgery, School of Dentistry, University of Texas Health Science Center, San Antonio, TX, USA
| | - John Shannonhouse
- Department of Oral & Maxillofacial Surgery, School of Dentistry, University of Texas Health Science Center, San Antonio, TX, USA
| | - Ruben Gomez
- Department of Oral & Maxillofacial Surgery, School of Dentistry, University of Texas Health Science Center, San Antonio, TX, USA
| | - Yu Shin Kim
- Department of Oral & Maxillofacial Surgery, School of Dentistry, University of Texas Health Science Center, San Antonio, TX, USA.
- Programs in Integrated Biomedical Sciences, Biomedical Engineering, Radiological Sciences, Translational Sciences, University of Texas Health Science Center, San Antonio, TX, USA.
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Medeiros AC, Medeiros P, Pigatto GR, Maione S, Coimbra NC, de Freitas RL. Cannabidiol in the dorsal hippocampus attenuates emotional and cognitive impairments related to neuropathic pain: The role of prelimbic neocortex-hippocampal connections. Prog Neuropsychopharmacol Biol Psychiatry 2024; 134:111039. [PMID: 38797491 DOI: 10.1016/j.pnpbp.2024.111039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 05/22/2024] [Accepted: 05/23/2024] [Indexed: 05/29/2024]
Abstract
BACKGROUND AND PURPOSE Chronic neuropathic pain (NP) is commonly associated with cognitive and emotional impairments. Cannabidiol (CBD) presents a broad spectrum of action with a potential analgesic effect. This work investigates the CBD effect on comorbidity between chronic NP, depression, and memory impairment. EXPERIMENTAL APPROACH The connection between the neocortex and the hippocampus was investigated with biotinylated dextran amine (BDA) deposits in the prelimbic cortex (PrL). Wistar rats were submitted to chronic constriction injury (CCI) of the sciatic nerve and CA1 treatment with CBD (15, 30, 60 nmol). KEY RESULTS BDA-labeled perikarya and terminal buttons were found in CA1 and dentate gyrus. CCI-induced mechanical and cold allodynia increased c-Fos protein expression in the PrL and CA1. The number of astrocytes in PrL and CA1 increased, and the number of neuroblasts decreased in CA1. Animals submitted to CCI procedure showed increasing depressive-like behaviors, such as memory impairment. CBD (60 nmol) treatment decreased mechanical and cold allodynia, attenuated depressive-associated behaviors, and improved memory performance. Cobalt chloride (CoCl2: 1 nM), WAY-100635 (0.37 nmol), and AM251 (100 nmol) intra-PrL reversed the effect of CA1 treatment with CBD (60 nmol) on nociceptive, cognitive, and depressive behaviors. CONCLUSION CBD represents a promising therapeutic perspective in the pharmacological treatment of chronic NP and associated comorbidities such as depression and memory impairments. The CBD effects possibly recruit the CA1-PrL pathway, inducing neuroplasticity. CBD acute treatment into the CA1 produces functional and molecular morphological improvements.
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Affiliation(s)
- Ana Carolina Medeiros
- Multi-User Center of Neuroelectrophysiology, Department of Surgery and Anatomy, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, SP 14049-900, Brazil; Laboratory of Neurosciences of Pain & Emotions, Department of Surgery and Anatomy, FMRP-USP, Av. Bandeirantes, 3900, Ribeirão Preto, SP 14049-900, Brazil; Behavioural Neurosciences Institute (INeC), Av. do Café, 2450, Ribeirão Preto, SP 14050-220, Brazil
| | - Priscila Medeiros
- Multi-User Center of Neuroelectrophysiology, Department of Surgery and Anatomy, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, SP 14049-900, Brazil; Laboratory of Neurosciences of Pain & Emotions, Department of Surgery and Anatomy, FMRP-USP, Av. Bandeirantes, 3900, Ribeirão Preto, SP 14049-900, Brazil; Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, FMRP-USP, Av. Bandeirantes, 3900, Ribeirão Preto, SP 14049-900, Brazil; Department of General and Specialized Nursing, Ribeirão Preto Nursing School of the University of São Paulo (EERP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, SP 14049-900, Brazil
| | - Glauce Regina Pigatto
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, FMRP-USP, Av. Bandeirantes, 3900, Ribeirão Preto, SP 14049-900, Brazil
| | - Sabatino Maione
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples 80138, Italy
| | - Norberto Cysne Coimbra
- Multi-User Center of Neuroelectrophysiology, Department of Surgery and Anatomy, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, SP 14049-900, Brazil; Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, FMRP-USP, Av. Bandeirantes, 3900, Ribeirão Preto, SP 14049-900, Brazil; Behavioural Neurosciences Institute (INeC), Av. do Café, 2450, Ribeirão Preto, SP 14050-220, Brazil
| | - Renato Leonardo de Freitas
- Multi-User Center of Neuroelectrophysiology, Department of Surgery and Anatomy, Ribeirão Preto Medical School of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto, SP 14049-900, Brazil; Laboratory of Neurosciences of Pain & Emotions, Department of Surgery and Anatomy, FMRP-USP, Av. Bandeirantes, 3900, Ribeirão Preto, SP 14049-900, Brazil; Behavioural Neurosciences Institute (INeC), Av. do Café, 2450, Ribeirão Preto, SP 14050-220, Brazil; Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples 80138, Italy.
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Zhang X, Zhang W, Wang Y, Zhang Y, Zhang D, Qin G, Zhou J, Chen L. SIRT1-regulated ROS generation activates NMDAR2B phosphorylation to promote central sensitization and allodynia in a male chronic migraine rat model. Front Mol Neurosci 2024; 17:1387481. [PMID: 38840778 PMCID: PMC11150646 DOI: 10.3389/fnmol.2024.1387481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Accepted: 04/25/2024] [Indexed: 06/07/2024] Open
Abstract
Background Central sensitization is one of the pivotal pathological mechanisms in chronic migraine (CM). Silent information regulator 1 (SIRT1) was shown to be involved in CM, but its specific mechanism is unclear. Reactive oxygen species (ROS) are increasingly regarded as important signaling molecules in several models of pain. However, studies about the role of ROS in the central sensitization of CM model are rare. We thus explored the specific process of SIRT1 involvement in the central sensitization of CM, focusing on the ROS pathway. Methods Inflammatory soup was repeatedly administered to male Sprague-Dawley rats to establish a CM model. The SIRT1 expression level in trigeminal nucleus caudalis (TNC) tissues was assessed by qRT-PCR and Western blotting analysis. The levels of ROS were detected by a Tissue Reactive Oxygen Detection Kit, DHE staining, and the fluorescence signal intensity of 8-OHdG. A ROS scavenger (tempol), a SIRT1 activator (SRT1720), a SIRT1 inhibitor (EX527), and a mitochondrial fission inhibitor (Mdivi-1) were used to investigate the specific molecular mechanisms involved. NMDAR2B, CGRP, ERK, and mitochondrial fission-related protein were evaluated by Western blotting, and the CGRP level in frozen sections of the TNC was detected via immunofluorescence staining. Results After repeated inflammatory soup infusion and successful establishment of the CM rat model, SIRT1 expression was found to be significantly reduced, accompanied by elevated ROS levels. Treatment with Tempol, SRT1720, or Mdivi-1 alleviated allodynia and reduced the increase in NMDAR2B phosphorylation and CGRP and ERK phosphorylation in the CM rat. In contrast, EX527 had the opposite effect in CM rat. SRT1720 and EX527 decreased and increased ROS levels, respectively, in CM rats, and tempol reversed the aggravating effect of EX527 in CM rats. Furthermore, the regulatory effect of SIRT1 on ROS may include the involvement of the mitochondrial fission protein DRP1. Conclusion The results indicate the importance of SIRT1 in CM may be due to its role in regulating the production of ROS, which are involved in modulating central sensitization in CM. These findings could lead to new ideas for CM treatment with the use of SIRT1 agonists and antioxidants.
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Affiliation(s)
- Xiaoyan Zhang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Wei Zhang
- Laboratory Research Center, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yanyun Wang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yun Zhang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Dunke Zhang
- Laboratory Research Center, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Guangcheng Qin
- Laboratory Research Center, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jiying Zhou
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Lixue Chen
- Laboratory Research Center, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Jiang S, Li Z, Huang SJ, Zou W, Luo JG. IRF7 overexpression alleviates CFA-induced inflammatory pain by inhibiting nuclear factor-κB activation and pro-inflammatory cytokines expression in rats. Brain Behav Immun 2024; 120:10-20. [PMID: 38777286 DOI: 10.1016/j.bbi.2024.05.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 05/04/2024] [Accepted: 05/19/2024] [Indexed: 05/25/2024] Open
Abstract
BACKGROUND It is known that nerve signals arising from sites of inflammation lead to persistent changes in the spinal cord and contribute to the amplification and persistence of pain. Nevertheless, the underlying mechanisms have not yet been completely elucidated. We identified differentially expressed genes in the lumbar (L4-L6) segment of the spinal cord from complete Freund's adjuvant (CFA) rats compared to control animals via high throughput sequencing. Based on differential gene expression analysis, we selected interferon regulatory factor 7 (IRF7) for follow-up experiments to explore its antinociceptive potential. METHODS An animal model of inflammatory pain was induced by intraplantar injection of CFA. We evaluated the effects of adeno-associated viral (AAV)-mediated overexpression of IRF7 in the spinal cord on pain-related behavior after CFA injection. Moreover, the activation of the nuclear factor-κB (NF-κB) and the expression of inflammatory cytokines were investigated to understand the underlying mechanisms related to the contribution of IRF7 to inflammatory pain. RESULTS CFA intraplantar injection caused a significant decrease in the level of spinal IRF7, which is mainly expressed in the dorsal horn neurons and astrocytes. Moreover, IRF7 overexpression significantly attenuated pain-related behaviors, as well as the activity of NF-κB/p65 and the production of interleukin-1β (IL-1β), interleukin-6 (IL-6), and tumor necrosis factor-α (TNF-α) in the spinal cord of CFA rats. CONCLUSIONS Our data indicated that spinal IRF7 plays an important role in the regulation of inflammatory pain. Thus, IRF7 overexpression at the spinal cord level might represent a potential target for the treatment of inflammatory pain.
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Affiliation(s)
- Shasha Jiang
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
| | - Zhengyiqi Li
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, PR China
| | - Si-Jian Huang
- Department of Anesthesiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, PR China
| | - Wangyuan Zou
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, PR China.
| | - Jian-Gang Luo
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, Hunan, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, PR China.
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Brum ES, Fialho MFP, Souza Monteiro de Araújo D, Landini L, Marini M, Titiz M, Kuhn BL, Frizzo CP, Araújo PHS, Guimarães RM, Cunha TM, Silva CR, Trevisan G, Geppetti P, Nassini R, De Logu F, Oliveira SM. Schwann cell TRPA1 elicits reserpine-induced fibromyalgia pain in mice. Br J Pharmacol 2024. [PMID: 38772415 DOI: 10.1111/bph.16413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 02/29/2024] [Accepted: 03/30/2024] [Indexed: 05/23/2024] Open
Abstract
BACKGROUND AND PURPOSE Fibromyalgia is a complex clinical disorder with an unknown aetiology, characterized by generalized pain and co-morbid symptoms such as anxiety and depression. An imbalance of oxidants and antioxidants is proposed to play a pivotal role in the pathogenesis of fibromyalgia symptoms. However, the precise mechanisms by which oxidative stress contributes to fibromyalgia-induced pain remain unclear. The transient receptor potential ankyrin 1 (TRPA1) channel, known as both a pain sensor and an oxidative stress sensor, has been implicated in various painful conditions. EXPERIMENTAL APPROACH The feed-forward mechanism that implicates reactive oxygen species (ROS) driven by TRPA1 was investigated in a reserpine-induced fibromyalgia model in C57BL/6J mice employing pharmacological interventions and genetic approaches. KEY RESULTS Reserpine-treated mice developed pain-like behaviours (mechanical/cold hypersensitivity) and early anxiety-depressive-like disorders, accompanied by increased levels of oxidative stress markers in the sciatic nerve tissues. These effects were not observed upon pharmacological blockade or global genetic deletion of the TRPA1 channel and macrophage depletion. Furthermore, we demonstrated that selective silencing of TRPA1 in Schwann cells reduced reserpine-induced neuroinflammation (NADPH oxidase 1-dependent ROS generation and macrophage increase in the sciatic nerve) and attenuated fibromyalgia-like behaviours. CONCLUSION AND IMPLICATIONS Activated Schwann cells expressing TRPA1 promote an intracellular pathway culminating in the release of ROS and recruitment of macrophages in the mouse sciatic nerve. These cellular and molecular events sustain mechanical and cold hypersensitivity in the reserpine-evoked fibromyalgia model. Targeting TRPA1 channels on Schwann cells could offer a novel therapeutic approach for managing fibromyalgia-related behaviours.
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Affiliation(s)
- Evelyne Silva Brum
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Centre of Natural and Exact Sciences, Federal University of Santa Maria, Santa Maria, Brazil
| | - Maria Fernanda Pessano Fialho
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Centre of Natural and Exact Sciences, Federal University of Santa Maria, Santa Maria, Brazil
| | | | - Lorenzo Landini
- Department of Health Sciences, Clinical Pharmacology Unit, University of Florence, Florence, Italy
| | - Matilde Marini
- Department of Health Sciences, Clinical Pharmacology Unit, University of Florence, Florence, Italy
| | - Mustafa Titiz
- Department of Health Sciences, Clinical Pharmacology Unit, University of Florence, Florence, Italy
| | - Bruna Luiza Kuhn
- Heterocycle Chemistry Nucleus (NUQUIMHE), Federal University of Santa Maria, Santa Maria, Brazil
| | - Clarissa Piccinin Frizzo
- Heterocycle Chemistry Nucleus (NUQUIMHE), Federal University of Santa Maria, Santa Maria, Brazil
| | | | - Rafaela Mano Guimarães
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Thiago Mattar Cunha
- Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Cássia Regina Silva
- Department of Genetic and Biochemistry, University of Uberlândia, Uberlândia, Brazil
| | - Gabriela Trevisan
- Graduate Program in Pharmacology, Federal University of Santa Maria, Santa Maria, Brazil
| | - Pierangelo Geppetti
- Department of Health Sciences, Clinical Pharmacology Unit, University of Florence, Florence, Italy
| | - Romina Nassini
- Department of Health Sciences, Clinical Pharmacology Unit, University of Florence, Florence, Italy
| | - Francesco De Logu
- Department of Health Sciences, Clinical Pharmacology Unit, University of Florence, Florence, Italy
| | - Sara Marchesan Oliveira
- Graduate Program in Biological Sciences: Toxicological Biochemistry, Centre of Natural and Exact Sciences, Federal University of Santa Maria, Santa Maria, Brazil
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Meqbil YJ, Aguilar J, Blaine AT, Chen L, Cassell RJ, Pradhan AA, van Rijn RM. Identification of 1,3,8-Triazaspiro[4.5]Decane-2,4-Dione Derivatives as a Novel δ Opioid Receptor-Selective Agonist Chemotype. J Pharmacol Exp Ther 2024; 389:301-309. [PMID: 38621994 PMCID: PMC11125782 DOI: 10.1124/jpet.123.001735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 03/25/2024] [Accepted: 04/08/2024] [Indexed: 04/17/2024] Open
Abstract
δ opioid receptors (DORs) hold potential as a target for neurologic and psychiatric disorders, yet no DOR agonist has proven efficacious in critical phase II clinical trials. The exact reasons for the failure to produce quality drug candidates for the DOR are unclear. However, it is known that certain DOR agonists can induce seizures and exhibit tachyphylaxis. Several studies have suggested that those adverse effects are more prevalent in delta agonists that share the (+)-4-[(αR)-α-((2S,5R)-4-allyl-2,5-dimethyl-1-piperazinyl)-3-methoxybenzyl]-N,N-diethylbenzamide (SNC80)/4-[(αR*)-α-((2S*,5R*)-4-allyl-2,5-dimethyl-1-piperazinyl)-3-hydroxybenzyl]-N,N-diethylbenzamide chemotype. There is a need to find novel lead candidates for drug development that have improved pharmacological properties to differentiate them from the current failed delta agonists. Our objective in this study was to identify novel DOR agonists. We used a β-arrestin assay to screen a small G-protein coupled receptors (GPCR)-focused chemical library. We identified a novel chemotype of DOR agonists that appears to bind to the orthosteric site based of docking and molecular dynamic simulation. The most potent agonist hit compound is selective for the DOR over a panel of 167 other GPCRs, is slightly biased toward G-protein signaling and has anti-allodynic efficacy in a complete Freund's adjuvant model of inflammatory pain in C57BL/6 male and female mice. The newly discovered chemotype contrasts with molecules like SNC80 that are highly efficacious β-arrestin recruiters and may suggest this novel class of DOR agonists could be expanded on to develop a clinical candidate drug. SIGNIFICANCE STATEMENT: δ opioid receptors are a clinical target for various neurological disorders, including migraine and chronic pain. Many of the clinically tested delta opioid agonists share a single chemotype, which carries risks during drug development. Through a small-scale high-throughput screening assay, this study identified a novel δ opioid receptor agonist chemotype, which may serve as alternative for the current analgesic clinical candidates.
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Affiliation(s)
- Yazan J Meqbil
- Borch Department of Medicinal Chemistry and Molecular Pharmacology (Y.J.M., A.T.B., R.J.C., R.M.v.R.), Computational Interdisciplinary Graduate Programs, Computational Life Sciences (Y.J.M.), and Interdisciplinary Life Science-PULSe (A.T.B.), Purdue University, West Lafayette, Indiana; Purdue Institute for Integrative Neuroscience, West Lafayette, Indiana (R.M.v.R.); Purdue Institute for Drug Discovery, West Lafayette, Indiana (L.C., R.M.v.R.); Septerna Inc., South San Francisco, California (R.M.v.R.); and Center for Clinical Pharmacology, Department of Anesthesiology, Washington University School of Medicine, St. Louis, Missouri (J.A., A.A.P.)
| | - Jhoan Aguilar
- Borch Department of Medicinal Chemistry and Molecular Pharmacology (Y.J.M., A.T.B., R.J.C., R.M.v.R.), Computational Interdisciplinary Graduate Programs, Computational Life Sciences (Y.J.M.), and Interdisciplinary Life Science-PULSe (A.T.B.), Purdue University, West Lafayette, Indiana; Purdue Institute for Integrative Neuroscience, West Lafayette, Indiana (R.M.v.R.); Purdue Institute for Drug Discovery, West Lafayette, Indiana (L.C., R.M.v.R.); Septerna Inc., South San Francisco, California (R.M.v.R.); and Center for Clinical Pharmacology, Department of Anesthesiology, Washington University School of Medicine, St. Louis, Missouri (J.A., A.A.P.)
| | - Arryn T Blaine
- Borch Department of Medicinal Chemistry and Molecular Pharmacology (Y.J.M., A.T.B., R.J.C., R.M.v.R.), Computational Interdisciplinary Graduate Programs, Computational Life Sciences (Y.J.M.), and Interdisciplinary Life Science-PULSe (A.T.B.), Purdue University, West Lafayette, Indiana; Purdue Institute for Integrative Neuroscience, West Lafayette, Indiana (R.M.v.R.); Purdue Institute for Drug Discovery, West Lafayette, Indiana (L.C., R.M.v.R.); Septerna Inc., South San Francisco, California (R.M.v.R.); and Center for Clinical Pharmacology, Department of Anesthesiology, Washington University School of Medicine, St. Louis, Missouri (J.A., A.A.P.)
| | - Lan Chen
- Borch Department of Medicinal Chemistry and Molecular Pharmacology (Y.J.M., A.T.B., R.J.C., R.M.v.R.), Computational Interdisciplinary Graduate Programs, Computational Life Sciences (Y.J.M.), and Interdisciplinary Life Science-PULSe (A.T.B.), Purdue University, West Lafayette, Indiana; Purdue Institute for Integrative Neuroscience, West Lafayette, Indiana (R.M.v.R.); Purdue Institute for Drug Discovery, West Lafayette, Indiana (L.C., R.M.v.R.); Septerna Inc., South San Francisco, California (R.M.v.R.); and Center for Clinical Pharmacology, Department of Anesthesiology, Washington University School of Medicine, St. Louis, Missouri (J.A., A.A.P.)
| | - Robert J Cassell
- Borch Department of Medicinal Chemistry and Molecular Pharmacology (Y.J.M., A.T.B., R.J.C., R.M.v.R.), Computational Interdisciplinary Graduate Programs, Computational Life Sciences (Y.J.M.), and Interdisciplinary Life Science-PULSe (A.T.B.), Purdue University, West Lafayette, Indiana; Purdue Institute for Integrative Neuroscience, West Lafayette, Indiana (R.M.v.R.); Purdue Institute for Drug Discovery, West Lafayette, Indiana (L.C., R.M.v.R.); Septerna Inc., South San Francisco, California (R.M.v.R.); and Center for Clinical Pharmacology, Department of Anesthesiology, Washington University School of Medicine, St. Louis, Missouri (J.A., A.A.P.)
| | - Amynah A Pradhan
- Borch Department of Medicinal Chemistry and Molecular Pharmacology (Y.J.M., A.T.B., R.J.C., R.M.v.R.), Computational Interdisciplinary Graduate Programs, Computational Life Sciences (Y.J.M.), and Interdisciplinary Life Science-PULSe (A.T.B.), Purdue University, West Lafayette, Indiana; Purdue Institute for Integrative Neuroscience, West Lafayette, Indiana (R.M.v.R.); Purdue Institute for Drug Discovery, West Lafayette, Indiana (L.C., R.M.v.R.); Septerna Inc., South San Francisco, California (R.M.v.R.); and Center for Clinical Pharmacology, Department of Anesthesiology, Washington University School of Medicine, St. Louis, Missouri (J.A., A.A.P.)
| | - Richard M van Rijn
- Borch Department of Medicinal Chemistry and Molecular Pharmacology (Y.J.M., A.T.B., R.J.C., R.M.v.R.), Computational Interdisciplinary Graduate Programs, Computational Life Sciences (Y.J.M.), and Interdisciplinary Life Science-PULSe (A.T.B.), Purdue University, West Lafayette, Indiana; Purdue Institute for Integrative Neuroscience, West Lafayette, Indiana (R.M.v.R.); Purdue Institute for Drug Discovery, West Lafayette, Indiana (L.C., R.M.v.R.); Septerna Inc., South San Francisco, California (R.M.v.R.); and Center for Clinical Pharmacology, Department of Anesthesiology, Washington University School of Medicine, St. Louis, Missouri (J.A., A.A.P.)
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Wegert A, Monnee M, de Graaf W, van Holst F, Bolcato G, Díaz JL, Dordal A, Portillo-Salido E, Reinoso RF, Yeste S, Torrens A, Almansa C. Towards Multitargeted Ligands as Pain Therapeutics: Dual Ligands of the Ca vα2δ-1 Subunit of Voltage-Gated Calcium Channel and the μ-Opioid Receptor. ChemMedChem 2024; 19:e202300473. [PMID: 38230842 DOI: 10.1002/cmdc.202300473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 12/05/2023] [Indexed: 01/18/2024]
Abstract
The synthesis and pharmacological activity of a new series of dual ligands combining activities towards the α2δ-1 subunit of voltage-gated calcium channels (Cavα2δ-1) and the μ-opioid receptor (MOR) as novel pain therapeutics are reported. A careful exploration of the pharmacophores related to both targets, which in principle had few common characteristics, led to the design of novel compounds exhibiting both activities. The construction of the dual ligands started from published Cavα2δ-1 ligands, onto which MOR ligand pharmacophoric elements were added. This exercise led to new amino-acidic substances with good affinities on both targets as well as good metabolic and physicochemical profiles and low potential for drug-drug interactions. A representative compound, (2S,4S)-4-(4-chloro-3-(((cis)-4-(dimethylamino)-4-phenylcyclohexyl)methyl)-5-fluorophenoxy)pyrrolidine-2-carboxylic acid, displayed promising analgesic activities in several in vivo pain models as well as a reduced side-effect profile in relation to morphine.
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Affiliation(s)
- Anita Wegert
- Symeres, Kerkenbos 1013, 6546 BB, Nijmegen, The, Netherlands
| | - Menno Monnee
- Symeres, Kerkenbos 1013, 6546 BB, Nijmegen, The, Netherlands
| | - Wouter de Graaf
- Symeres, Kerkenbos 1013, 6546 BB, Nijmegen, The, Netherlands
| | - Frank van Holst
- Symeres, Kerkenbos 1013, 6546 BB, Nijmegen, The, Netherlands
| | | | - José Luis Díaz
- WELAB, Parc Científic Barcelona, C/Baldiri Reixac 4-8, 08028, Barcelona, Spain
| | - Albert Dordal
- WELAB, Parc Científic Barcelona, C/Baldiri Reixac 4-8, 08028, Barcelona, Spain
| | | | - Raquel F Reinoso
- WELAB, Parc Científic Barcelona, C/Baldiri Reixac 4-8, 08028, Barcelona, Spain
| | - Sandra Yeste
- WELAB, Parc Científic Barcelona, C/Baldiri Reixac 4-8, 08028, Barcelona, Spain
| | - Antoni Torrens
- WELAB, Parc Científic Barcelona, C/Baldiri Reixac 4-8, 08028, Barcelona, Spain
| | - Carmen Almansa
- WELAB, Parc Científic Barcelona, C/Baldiri Reixac 4-8, 08028, Barcelona, Spain
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45
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Xu J, Lu L, Jiang S, Qin Z, Huang J, Huang M, Jin J. Paeoniflorin ameliorates oxaliplatin-induced peripheral neuropathy via inhibiting neuroinflammation through influence on gut microbiota. Eur J Pharmacol 2024; 971:176516. [PMID: 38513881 DOI: 10.1016/j.ejphar.2024.176516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 01/13/2024] [Accepted: 03/18/2024] [Indexed: 03/23/2024]
Abstract
Oxaliplatin (OXA)-induced peripheral neuropathy (OIPN) is a severe side effect that greatly limits OXA clinical use and threatens patients' life and health. Paeoniflorin exhibits extensive anti-inflammatory and neuroprotective effects, but whether it can protect against OIPN and the underlying mechanisms remain unclear. This study aimed to investigate the effects of paeoniflorin on OIPN and probe into the underlying mechanisms. The OIPN model was established through oxaliplatin injection in rats. The ameliorative effects of paeoniflorin on OIPN was assessed by nociceptive hypersensitivities through pain behavioral methods. Neuroinflammation were examined by measuring the levels of inflammatory cytokines and immune cells infiltration. The signaling pathway of TLR4/MyD88/NF-κB was evaluated by Western blotting. Gut microbial changes were detected by 16S rDNA sequencing technology. In addition, antibiotics-induced microbiota eradication and fecal microbial transplantation (FMT) were applied for exploring the function of gut microbiota in the protective effects of paeoniflorin. The results revealed that paeoniflorin significantly alleviated mechanical and cold hypersensitivity, mitigated neuroinflammation and influenced gut microbial composition in OIPN rats. Fecal microbiota transplantation further verified that gut microbiota was required for paeoniflorin ameliorating OIPN and that the underlying mechanism involved downregulation of TLR4/MyD88/NF-κB signaling. Specifically, Akkermansia, Dubosiella and Corynebacterium might serve as crucial genera regulated by paeoniflorin in the treatment of OIPN. In summary, our investigations delineate paeoniflorin's ameliorative effects on OIPN by alleviating neuroinflammation through regulations of gut microbiota. This suggests that paeoniflorin may serve as a new potential strategy for treatment of OIPN in clinical practice.
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Affiliation(s)
- Jiayue Xu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Langqing Lu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Shiqin Jiang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Zhiyan Qin
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Junyuan Huang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Min Huang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China; Institute of Clinical Pharmacology, Sun Yat-sen University, Guangzhou, 510006, China
| | - Jing Jin
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China; Institute of Clinical Pharmacology, Sun Yat-sen University, Guangzhou, 510006, China.
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46
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Lu J, Zhang L, Zhang J, Sun Y, Wang H, Wang W, Wang K, Qin L, Jia J. Oxidative stress plays an important role in the central regulatory mechanism of orofacial hyperalgesia under low estrogen conditions. Behav Brain Res 2024; 469:115047. [PMID: 38759799 DOI: 10.1016/j.bbr.2024.115047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 05/07/2024] [Accepted: 05/08/2024] [Indexed: 05/19/2024]
Abstract
Hyperalgesia occurs in the orofacial region of rats when estrogen levels are low, although the specific mechanism needs to be investigated further. Furthermore, oxidative stress plays an important role in the transmission of pain signals. This study aimed to explore the role of oxidative stress in orofacial hyperalgesia under low estrogen conditions. We firstly found an imbalance between oxidative and antioxidant capacity within the spinal trigeminal subnucleus caudalis (SP5C) of rats after ovariectomy (OVX), resulting in oxidative stress and then a decrease in the orofacial pain threshold. To investigate the mechanism by which oxidative stress occurs, we used virus as a tool to silence or overexpress the excitatory amino acid transporter 3 (EAAT3) gene. Further investigation revealed that the regulation of glutathione (GSH) and reactive oxygen species (ROS) can be achieved by regulating EAAT3, which in turn impacts the occurrence of oxidative stress. In summary, our findings suggest that reduced expression of EAAT3 within the SP5C of rats in the low estrogen state may decrease GSH content and increase ROS levels, resulting in oxidative stress and ultimately lead to orofacial hyperalgesia. This suggests that antioxidants could be a potential therapeutic direction for orofacial hyperalgesia under low estrogen conditions, though more research is needed to understand its mechanism.
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Affiliation(s)
- Jiali Lu
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, China
| | - Linqian Zhang
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, China
| | - Jinglin Zhang
- Yuncheng Vocational Nursing College, Yuncheng, China
| | - Yanrong Sun
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Hanfei Wang
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Wenjuan Wang
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Ke Wang
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Lihua Qin
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China.
| | - Jing Jia
- Shanxi Medical University School and Hospital of Stomatology, Taiyuan, China; Department of Stomatology, The Third Medical Center, Chinese PLA (People's Liberation Army) General Hospital, Beijing, China.
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Zhang D, Dong X, Li X, Yang Y, Li H, Hong Y, Yang G, Kong X, Wang X, Ma X. Moxibustion ameliorates chronic inflammatory visceral pain via spinal circRNA-miRNA-mRNA networks: a central mechanism study. Mol Brain 2024; 17:23. [PMID: 38750560 PMCID: PMC11097453 DOI: 10.1186/s13041-024-01093-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 04/22/2024] [Indexed: 05/18/2024] Open
Abstract
This study aimed to unveil the central mechanism of moxibustion treating chronic inflammatory visceral pain (CIVP) from the angle of circRNA-miRNA-mRNA networks in the spinal cord. The rat CIVP model was established using a mixture of 5% (w/v) 2,4,6-trinitrobenzene sulfonic acid and 50% ethanol at a volume ratio of 2:1 via enema. Rats in the moxibustion group received herb-partitioned moxibustion at Tianshu (ST25, bilateral) and Qihai (CV6) points. The abdominal withdrawal reflex (AWR), mechanical withdrawal threshold (MWT), and thermal withdrawal latency (TWL) were adopted for pain behavior observation and pain sensitivity assessment. The circRNA, miRNA, and mRNA expression profiles were detected using the high-throughput sequencing technique. Relevant databases and bioinformatics analysis methods were used to screen for differentially expressed (DE) RNAs and build a circRNA-miRNA-mRNA (competing endogenous RNA) ceRNA regulatory network. The real-time quantitative PCR was employed to verify the sequencing result. CIVP rat models had a significantly higher AWR and lower TWL and MWT than normal rats. Between normal and model rats, there were 103 DE-circRNAs, 16 DE-miRNAs, and 397 DE-mRNAs in the spinal cord. Compared with the model group, the moxibustion group had a lower AWR and higher TWL and MWT; between these two groups, there were 118 DE-circRNAs, 15 DE-miRNAs, and 804 DE-mRNAs in the spinal cord. Two ceRNA networks were chosen to be verified. As a result, moxibustion's analgesic effect on visceral pain in CIVP rats may be associated with regulating the circRNA_02767/rno-miR-483-3p/Gfap network in the spinal cord and improving central sensitization.
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Affiliation(s)
- Dan Zhang
- Laboratory of Acupuncture-Moxibustion and Immunology, Shanghai Research Institute of Acupuncture and Meridian, Shanghai University of Traditional Chinese Medicine, Shanghai, 200030, China
| | - Xiaoqing Dong
- Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
- Department of Acupuncture and Moxibustion, Xi'an Hospital of Encephalopathy, Shaanxi University of Chinese Medicine, Shaanxi, 710032, China
| | - Xiaoying Li
- Department of Acupuncture and Moxibustion, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200071, China
| | - Yanting Yang
- Laboratory of Acupuncture-Moxibustion and Immunology, Shanghai Research Institute of Acupuncture and Meridian, Shanghai University of Traditional Chinese Medicine, Shanghai, 200030, China
| | - Hongna Li
- Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Yue Hong
- Laboratory of Acupuncture-Moxibustion and Immunology, Shanghai Research Institute of Acupuncture and Meridian, Shanghai University of Traditional Chinese Medicine, Shanghai, 200030, China
| | - Guang Yang
- Laboratory of Acupuncture-Moxibustion and Immunology, Shanghai Research Institute of Acupuncture and Meridian, Shanghai University of Traditional Chinese Medicine, Shanghai, 200030, China
| | - Xiehe Kong
- Laboratory of Acupuncture-Moxibustion and Immunology, Shanghai Research Institute of Acupuncture and Meridian, Shanghai University of Traditional Chinese Medicine, Shanghai, 200030, China
| | - Xuejun Wang
- Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China.
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, 200031, China.
| | - Xiaopeng Ma
- Laboratory of Acupuncture-Moxibustion and Immunology, Shanghai Research Institute of Acupuncture and Meridian, Shanghai University of Traditional Chinese Medicine, Shanghai, 200030, China.
- Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China.
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Silva JDN, Beserra Filho JIA, Acha BT, Almeida FRDC, Batista EKF, Silva VR, Bomfim LM, Soares MBP, Bezerra DP, dos Santos AG, de Andrade FDCP, Mendes AN, Arcanjo DDR, Ferreira PMP. Promising Effects of Casearins in Tumor-Bearing Mice and Antinociceptive Action against Oncologic Pain: Molecular Docking and In Vivo Findings. Pharmaceuticals (Basel) 2024; 17:633. [PMID: 38794204 PMCID: PMC11124378 DOI: 10.3390/ph17050633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 05/07/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
Safer analgesic drugs remain a hard challenge because of cardiovascular and/or gastrointestinal toxicity, mainly. So, this study evaluated in vivo the antiproliferative actions of a fraction with casearins (FC) from Casearia sylvestris leaves against human colorectal carcinomas and antihyperalgesic effects on inflammatory- or opiate-based pain relief and oncologic pain in Sarcoma 180 (S180)-bearing mice. Moreover, docking investigations evaluated the binding among Casearin X and NMDA(N-methyl-D-aspartate)-type glutamate receptors. HCT-116 colorectal carcinoma-xenografted mice were treated with FC for 15 days. Antinociceptive assays included chemically induced algesia and investigated mechanisms by pharmacological blockade. Intraplantar region S180-bearing animals received a single dose of FC and were examined for mechanical allodynia and behavior alterations. AutoDock Vina determined molecular interactions among Cas X and NMDA receptor subunits. FC reduced tumor growth at i.p. (5 and 10 mg/kg) and oral (25 mg/kg/day) doses (31.12-39.27%). FC reduced abdominal pain, as confirmed by formalin and glutamate protocols, whose antinociception activity was blocked by naloxone and L-NAME (neurogenic phase) and naloxone, atropine, and flumazenil (inflammatory phase). Meanwhile, glibenclamide potentiated the FC analgesic effects. FC increased the paw withdrawal threshold without producing changes in exploratory parameters or motor coordination. Cas X generated a more stable complex with active sites of the NMDA receptor GluN2B subunits. FC is a promising antitumor agent against colorectal carcinomas, has peripheral analgesic effects by desensitizing secondary afferent neurons, and inhibits glutamate release from presynaptic neurons and/or their action on cognate receptors. These findings emphasize the use of clerodane diterpenes against cancer-related pain conditions.
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Affiliation(s)
- Jurandy do Nascimento Silva
- Laboratory of Experimental Cancerology (LabCancer), Department of Biophysics and Physiology, Federal University of Piauí, Teresina 64049-550, Brazil; (J.d.N.S.); (J.I.A.B.F.)
- Department of Chemistry, Federal University of Piauí, Teresina 64049-550, Brazil
| | - José Ivo Araújo Beserra Filho
- Laboratory of Experimental Cancerology (LabCancer), Department of Biophysics and Physiology, Federal University of Piauí, Teresina 64049-550, Brazil; (J.d.N.S.); (J.I.A.B.F.)
| | - Boris Timah Acha
- Laboratory of Functional and Molecular Studies in Physiopharmacology (Lafmol), Department of Biophysics and Physiology, Federal University of Piauí, Teresina 64049-550, Brazil;
- Laboratory of Pain Pharmacology, Department of Biochemistry and Pharmacology, Federal University of Piauí, Teresina 64049-550, Brazil;
| | - Fernanda Regina de Castro Almeida
- Laboratory of Pain Pharmacology, Department of Biochemistry and Pharmacology, Federal University of Piauí, Teresina 64049-550, Brazil;
| | | | - Valdenizia Rodrigues Silva
- Laboratory of Tissue Engineering and Immunopharmacology, Oswaldo Cruz Foundation, Salvador 40296-710, Brazil; (V.R.S.); (L.M.B.); (M.B.P.S.); (D.P.B.)
| | - Larissa Mendes Bomfim
- Laboratory of Tissue Engineering and Immunopharmacology, Oswaldo Cruz Foundation, Salvador 40296-710, Brazil; (V.R.S.); (L.M.B.); (M.B.P.S.); (D.P.B.)
| | - Milena Botelho Pereira Soares
- Laboratory of Tissue Engineering and Immunopharmacology, Oswaldo Cruz Foundation, Salvador 40296-710, Brazil; (V.R.S.); (L.M.B.); (M.B.P.S.); (D.P.B.)
| | - Daniel Pereira Bezerra
- Laboratory of Tissue Engineering and Immunopharmacology, Oswaldo Cruz Foundation, Salvador 40296-710, Brazil; (V.R.S.); (L.M.B.); (M.B.P.S.); (D.P.B.)
| | - André Gonzaga dos Santos
- Laboratory of Pharmacognosy, Faculty of Pharmaceutical Sciences, State University Júlio de Mesquita Filho, Araraquara 14800-700, Brazil;
| | - Francisco das Chagas Pereira de Andrade
- Laboratory of Innovation in Science and Technology (Lacitec), Department of Biophysics and Physiology, Federal University of Piauí, Teresina 64049-550, Brazil; (F.d.C.P.d.A.); (A.N.M.)
| | - Anderson Nogueira Mendes
- Laboratory of Innovation in Science and Technology (Lacitec), Department of Biophysics and Physiology, Federal University of Piauí, Teresina 64049-550, Brazil; (F.d.C.P.d.A.); (A.N.M.)
| | - Daniel Dias Rufino Arcanjo
- Laboratory of Functional and Molecular Studies in Physiopharmacology (Lafmol), Department of Biophysics and Physiology, Federal University of Piauí, Teresina 64049-550, Brazil;
| | - Paulo Michel Pinheiro Ferreira
- Laboratory of Experimental Cancerology (LabCancer), Department of Biophysics and Physiology, Federal University of Piauí, Teresina 64049-550, Brazil; (J.d.N.S.); (J.I.A.B.F.)
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Midavaine É, Moraes BC, Benitez J, Rodriguez SR, Braz JM, Kochhar NP, Eckalbar WL, Domingos AI, Pintar JE, Basbaum AI, Kashem SW. Regulatory T cell-derived enkephalin imparts pregnancy-induced analgesia. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.11.593442. [PMID: 38798460 PMCID: PMC11118376 DOI: 10.1101/2024.05.11.593442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
T cells have emerged as sex-dependent orchestrators of pain chronification but the sexually dimorphic mechanisms by which T cells control pain sensitivity is not resolved. Here, we demonstrate an influence of regulatory T cells (Tregs) on pain processing that is distinct from their canonical functions of immune regulation and tissue repair. Specifically, meningeal Tregs (mTregs) express the endogenous opioid, enkephalin, and mTreg-derived enkephalin exerts an antinociceptive action through a presynaptic opioid receptor signaling mechanism that is dispensable for immunosuppression. mTregs are both necessary and sufficient for suppressing mechanical pain sensitivity in female but not male mice. Notably, the mTreg modulation of pain thresholds depends on sex-hormones and expansion of enkephalinergic mTregs during gestation imparts a remarkable pregnancy-induced analgesia in a pre-existing, chronic, unremitting neuropathic pain model. These results uncover a fundamental sex-specific, pregnancy-pronounced, and immunologically-derived endogenous opioid circuit for nociceptive regulation with critical implications for pain biology and maternal health.
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Affiliation(s)
- Élora Midavaine
- Department of Anatomy, University of California San Francisco, San Francisco, California, USA
| | - Beatriz C. Moraes
- Department of Anatomy, University of California San Francisco, San Francisco, California, USA
| | - Jorge Benitez
- Department of Anatomy, University of California San Francisco, San Francisco, California, USA
| | - Sian R. Rodriguez
- Department of Anatomy, University of California San Francisco, San Francisco, California, USA
| | - Joao M. Braz
- Department of Anatomy, University of California San Francisco, San Francisco, California, USA
| | - Nathan P. Kochhar
- Department of Anatomy, University of California San Francisco, San Francisco, California, USA
| | - Walter L. Eckalbar
- Department of Anatomy, University of California San Francisco, San Francisco, California, USA
| | - Ana I. Domingos
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - John E. Pintar
- Department of Neuroscience and Cell Biology, Rutgers Robert Wood Johnson Medical School, Piscataway, NJ, USA
| | - Allan I. Basbaum
- Department of Anatomy, University of California San Francisco, San Francisco, California, USA
| | - Sakeen W. Kashem
- Department of Dermatology, University of California San Francisco, San Francisco, CA, USA
- Dermatology, Veterans Affairs Medical Center, San Francisco, California, USA
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50
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Alpay B, Cimen B, Akaydin E, Onat F, Bolay H, Sara Y. Extrasynaptic δGABAA receptors mediate resistance to migraine-like phenotype in rats. J Headache Pain 2024; 25:75. [PMID: 38724972 PMCID: PMC11083752 DOI: 10.1186/s10194-024-01777-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2024] [Accepted: 04/22/2024] [Indexed: 05/12/2024] Open
Abstract
BACKGROUND GABA, a key inhibitory neurotransmitter, has synaptic and extrasynaptic receptors on the postsynaptic neuron. Background GABA, which spills over from the synaptic cleft, acts on extrasynaptic delta subunit containing GABAA receptors. The role of extrasynaptic GABAergic input in migraine is unknown. We investigated the susceptibility to valid migraine-provoking substances with clinically relevant behavioral readouts in Genetic Absence Epilepsy of Rats Strasbourg (GAERS), in which the GABAergic tonus was altered. Subsequently, we screened relevant GABAergic mechanisms in Wistar rats by pharmacological means to identify the mechanisms. METHODS Wistar and GAERS rats were administered nitroglycerin (10 mg/kg) or levcromakalim (1 mg/kg). Mechanical allodynia and photophobia were assessed using von Frey monofilaments and a dark-light box. Effects of GAT-1 blocker tiagabine (5 mg/kg), GABAB receptor agonist baclofen (2 mg/kg), synaptic GABAA receptor agonist diazepam (1 mg/kg), extrasynaptic GABAA receptor agonists gaboxadol (4 mg/kg), and muscimol (0.75 mg/kg), T-type calcium channel blocker ethosuximide (100 mg/kg) or synaptic GABAA receptor antagonist flumazenil (15 mg/kg) on levcromakalim-induced migraine phenotype were screened. RESULTS Unlike Wistar rats, GAERS exhibited no reduction in mechanical pain thresholds or light aversion following nitroglycerin or levcromakalim injection. Ethosuximide did not reverse the resistant phenotype in GAERS, excluding the role of T-type calcium channel dysfunction in this phenomenon. Tiagabine prevented levcromakalim-induced mechanical allodynia in Wistar rats, suggesting a key role in enhanced GABA spillover. Baclofen did not alleviate mechanical allodynia. Diazepam failed to mitigate levcromakalim-induced migraine phenotype. Additionally, the resistant phenotype in GAERS was not affected by flumazenil. Extrasynaptic GABAA receptor agonists gaboxadol and muscimol inhibited periorbital allodynia in Wistar rats. CONCLUSION Our study introduced a rat strain resistant to migraine-provoking agents and signified a critical involvement of extrasynaptic δGABAergic receptors. Extrasynaptic δ GABAA receptors, by mediating constant background inhibition on the excitability of neurons, stand as a novel drug target with a therapeutic potential in migraine.
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Affiliation(s)
- Berkay Alpay
- Department of Medical Pharmacology, Faculty of Medicine, Hacettepe University, Sihhiye, Ankara, 06320, Türkiye
- Neuroscience and Neurotechnology Excellence Joint Application and Research Center (NÖROM), Ankara, 06560, Türkiye
| | - Bariscan Cimen
- Department of Medical Pharmacology, Faculty of Medicine, Hacettepe University, Sihhiye, Ankara, 06320, Türkiye
- Neuroscience and Neurotechnology Excellence Joint Application and Research Center (NÖROM), Ankara, 06560, Türkiye
| | - Elif Akaydin
- Department of Medical Pharmacology, Faculty of Medicine, Hacettepe University, Sihhiye, Ankara, 06320, Türkiye
- Neuroscience and Neurotechnology Excellence Joint Application and Research Center (NÖROM), Ankara, 06560, Türkiye
| | - Filiz Onat
- Department of Medical Pharmacology, Faculty of Medicine, Acibadem Mehmet Ali Aydinlar University, Istanbul, 34752, Türkiye
| | - Hayrunnisa Bolay
- Neuroscience and Neurotechnology Excellence Joint Application and Research Center (NÖROM), Ankara, 06560, Türkiye.
- Department of Neurology and Algology, Faculty of Medicine, Gazi University, Besevler, Ankara, 06560, Türkiye.
| | - Yildirim Sara
- Department of Medical Pharmacology, Faculty of Medicine, Hacettepe University, Sihhiye, Ankara, 06320, Türkiye.
- Neuroscience and Neurotechnology Excellence Joint Application and Research Center (NÖROM), Ankara, 06560, Türkiye.
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