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Albin B, Qubbaj K, Tiwari AP, Adhikari P, Yang IH. Mitochondrial trafficking as a protective mechanism against chemotherapy drug-induced peripheral neuropathy: Identifying the key site of action. Life Sci 2023; 334:122219. [PMID: 37907151 DOI: 10.1016/j.lfs.2023.122219] [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: 07/12/2023] [Revised: 10/25/2023] [Accepted: 10/25/2023] [Indexed: 11/02/2023]
Abstract
AIMS Chemotherapy induced peripheral neuropathy (CIPN) is a common side effect seen in patients who have undergone most chemotherapy treatments to which there are currently no treatment methods. CIPN has been shown to cause axonal degeneration leading to Peripheral Neuropathy (PN), which can lead to major dosage reduction and may prevent further chemotherapy treatment due to oftentimes debilitating pain. Previously, we have determined the site-specific action of Paclitaxel (PTX), a microtubule targeting agent, as well as the neuroprotective effect of Fluocinolone Acetonide (FA) against Paclitaxel Induced Peripheral Neuropathy (PIPN). MAIN METHODS Mitochondrial trafficking analysis was determined for all sample sets, wherein FA showed enhanced anterograde (axonal) mitochondrial trafficking leading to neuroprotective effects for all samples. KEY FINDINGS Using this system, we demonstrate that PTX, Monomethyl auristatin E (MMAE), and Vincristine (VCR), are toxic at clinically prescribed levels when treated focally to axons. However, Cisplatin (CDDP) was determined to have a higher toxicity when treated to cell bodies. Although having different targeting mechanisms, the administration of FA was determined to have a significant neuroprotective effect for against all chemotherapy drugs tested. SIGNIFICANCE This study identifies key insights regarding site of action and neuroprotective strategies to further development as potential therapeutics against CIPN. FA was treated alongside each chemotherapy drug to identify the neuroprotective effect against CIPN, where FA was found to be neuroprotective for all drugs tested. This study found that treatment with FA led to an enhancement in the anterograde movement of mitochondria based on fluorescent imaging.
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Affiliation(s)
- Bayne Albin
- Center for Biomedical Engineering and Science, Department of Mechanical Engineering and Engineering Science, University of North Carolina at Charlotte, Charlotte, NC 28223, United States
| | - Khayzaran Qubbaj
- Center for Biomedical Engineering and Science, Department of Mechanical Engineering and Engineering Science, University of North Carolina at Charlotte, Charlotte, NC 28223, United States
| | - Arjun Prasad Tiwari
- Center for Biomedical Engineering and Science, Department of Mechanical Engineering and Engineering Science, University of North Carolina at Charlotte, Charlotte, NC 28223, United States
| | - Prashant Adhikari
- Center for Biomedical Engineering and Science, Department of Mechanical Engineering and Engineering Science, University of North Carolina at Charlotte, Charlotte, NC 28223, United States
| | - In Hong Yang
- Center for Biomedical Engineering and Science, Department of Mechanical Engineering and Engineering Science, University of North Carolina at Charlotte, Charlotte, NC 28223, United States.
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Moura-Pacheco TL, Martins-Pereira RC, Medeiros P, Sbragia L, Ramos Andrade Leite-Panissi C, Machado HR, Coimbra NC, de Freitas RL. Effect of electrical and chemical (activation versus inactivation) stimulation of the infralimbic division of the medial prefrontal cortex in rats with chronic neuropathic pain. Exp Brain Res 2023; 241:2591-2604. [PMID: 37725136 DOI: 10.1007/s00221-023-06657-y] [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: 04/23/2023] [Accepted: 06/20/2023] [Indexed: 09/21/2023]
Abstract
Neuropathic pain (NP) represents a complex disorder with sensory, cognitive, and emotional symptoms. The medial prefrontal cortex (mPFC) takes critical regulatory roles and may change functionally and morphologically during chronic NP. There needs to be a complete understanding of the neurophysiological and psychopharmacological bases of the NP phenomenon. This study aimed to investigate the participation of the infralimbic division (IFL) of the mPFC in chronic NP, as well as the role of the N-methyl-D-aspartic acid receptor (NMDAr) in the elaboration of chronic NP. Male Wistar rats were submitted to the von Frey and acetone tests to assess mechanical and cold allodynia after 21 days of chronic constriction injury (CCI) of the sciatic nerve or Sham-procedure ("false operated"). Electrical neurostimulation of the IFL/mPFC was performed by low-frequency stimuli (20 μA, 100 Hz) applied for 15 s by deep brain stimulation (DBS) device 21 days after CCI. Either cobalt chloride (CoCl2 at 1.0 mM/200 nL), NMDAr agonist (at 0.25, 1.0, and 2.0 nmol/200 nL) or physiological saline (200 nL) was administered into the IFL/mPFC. CoCl2 administration in the IFL cortex did not alter either mechanical or cold allodynia. DBS stimulation of the IFL cortex decreased mechanical allodynia in CCI rats. Chemical stimulation of the IFL cortex by an NMDA agonist (at 2.0 nmol) decreased mechanical allodynia. NMDA at any dose (0.25, 1.0, and 2.0 nmol) reduced the flicking/licking duration in the cold test. These findings suggest that the IFL/mPFC and the NMDAr of the neocortex are involved in attenuating chronic NP in rats.
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Affiliation(s)
- Thais Lohanny Moura-Pacheco
- 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 and Emotions, Department of Surgery and Anatomy, FMRP-USP, Av. Bandeirantes, 3900, Ribeirão Preto, SP, 14049-900, Brazil
- Pediatric Surgery Laboratory, Department of Surgery and Anatomy, FMRP-USP, Av. Bandeirantes, 3900, Ribeirão Preto, SP, 14049-900, Brazil
| | - Renata Cristina Martins-Pereira
- 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 and Emotions, Department of Surgery and Anatomy, FMRP-USP, Av. Bandeirantes, 3900, Ribeirão Preto, SP, 14049-900, Brazil
- Protection Laboratory in Childhood, Division of Neurosurgery, Department of Surgery and Anatomy, FMRP-USP, Avenida Bandeirantes, 3900, Ribeirão Preto, SP, 14049-900, 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 and 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), Avenida Bandeirantes, 3900, Ribeirão Preto, SP, 14049-900, Brazil
| | - Lourenço Sbragia
- Pediatric Surgery Laboratory, Department of Surgery and Anatomy, FMRP-USP, Av. Bandeirantes, 3900, Ribeirão Preto, SP, 14049-900, Brazil
| | - Christie Ramos Andrade Leite-Panissi
- Department of Psychology,, Faculty of Philosophy, Science and Letters of Ribeirão Preto of the University of São Paulo (FFCLRP-USP), Ribeirão Preto, SP, 14040-901, Brazil
| | - Hélio Rubens Machado
- 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
- Department of Psychology,, Faculty of Philosophy, Science and Letters of Ribeirão Preto of the University of São Paulo (FFCLRP-USP), Ribeirão Preto, SP, 14040-901, Brazil
| | - 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
| | - 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 and Emotions, Department of Surgery and Anatomy, FMRP-USP, Av. Bandeirantes, 3900, Ribeirão Preto, SP, 14049-900, Brazil.
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Micheli L, Maggini V, Ciampi C, Gallo E, Bogani P, Fani R, Pistelli L, Ghelardini C, Di Cesare Mannelli L, De Leo M, Firenzuoli F. Echinacea purpurea against neuropathic pain: Alkamides versus polyphenols efficacy. Phytother Res 2022; 37:1911-1923. [PMID: 36578266 DOI: 10.1002/ptr.7709] [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: 09/13/2022] [Revised: 12/12/2022] [Accepted: 12/13/2022] [Indexed: 12/30/2022]
Abstract
Chemotherapy-induced neuropathy represents the main dose-limiting toxicity of several anticancer drugs, such as oxaliplatin, leading to chronic pain and an impairment of the quality of life. Echinacea purpurea n-hexane extract (EP4 -RE ; rich in alkamides) and butanolic extract (EP4 -RBU ; rich in polyphenols) have been characterized and tested in an in vivo model of oxaliplatin-induced neuropathic pain, addressing the endocannabinoid system with alkamides and counteracting the redox imbalance with polyphenols. Thermal hypersensitivity was evaluated by the Cold Plate test. EP4 -RE showed a dose-dependent anti-hyperalgesic profile. The extract was more effective than its main constituent, dodeca-2 E,4 E,8Z,10 E/Z-tetraenoic acid isobutylamide (18 mg kg-1 , twofold to equimolar EP4 -RE 30 mg kg-1 ), suggesting a synergy with other extract constituents. Administration of cannabinoid type 2 (CB2) receptor-selective antagonist completely blocked the anti-allodynic effect of EP4 -RE , differently from the antagonism of CB1 receptors. EP4 -RBU (30 mg kg-1 ) exhibited anti-neuropathic properties too. The effect was mainly exerted by chicoric acid, which administered alone (123 μg kg-1 , equimolar to EP4 -RBU 30 mg kg-1 ) completely reverted oxaliplatin-induced allodynia. A synergy between different polyphenols in the extract had not been highlighted. Echinacea extracts have therapeutic potential in the treatment of neuropathic pain, through both alkamides CB2-selective activity and polyphenols protective properties.
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Affiliation(s)
- Laura Micheli
- Department of Neurosciences, Psychology, Drug Research and Child Health-Neurofarba-Section of Pharmacology and Toxicology, University of Florence, Florence, Italy
| | - Valentina Maggini
- Research and Innovation Center in Phytotherapy and Integrated Medicine (CERFIT), Referring Center for Phytotherapy, Tuscany Region, Careggi University Hospital, Florence, Italy
| | - Clara Ciampi
- Department of Neurosciences, Psychology, Drug Research and Child Health-Neurofarba-Section of Pharmacology and Toxicology, University of Florence, Florence, Italy
| | - Eugenia Gallo
- Research and Innovation Center in Phytotherapy and Integrated Medicine (CERFIT), Referring Center for Phytotherapy, Tuscany Region, Careggi University Hospital, Florence, Italy
| | - Patrizia Bogani
- Department of Biology, University of Florence, Sesto Fiorentino, Italy
| | - Renato Fani
- Department of Biology, University of Florence, Sesto Fiorentino, Italy
| | - Luisa Pistelli
- Department of Pharmacy, University of Pisa, Pisa, Italy.,CISUP, Centre for Instrumentation Sharing Pisa University, Pisa, Italy
| | - Carla Ghelardini
- Department of Neurosciences, Psychology, Drug Research and Child Health-Neurofarba-Section of Pharmacology and Toxicology, University of Florence, Florence, Italy
| | - Lorenzo Di Cesare Mannelli
- Department of Neurosciences, Psychology, Drug Research and Child Health-Neurofarba-Section of Pharmacology and Toxicology, University of Florence, Florence, Italy
| | - Marinella De Leo
- Department of Pharmacy, University of Pisa, Pisa, Italy.,CISUP, Centre for Instrumentation Sharing Pisa University, Pisa, Italy
| | - Fabio Firenzuoli
- Research and Innovation Center in Phytotherapy and Integrated Medicine (CERFIT), Referring Center for Phytotherapy, Tuscany Region, Careggi University Hospital, Florence, Italy
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Casili G, Lanza M, Filippone A, Cucinotta L, Paterniti I, Repici A, Capra AP, Cuzzocrea S, Esposito E, Campolo M. Dimethyl Fumarate (DMF) Alleviated Post-Operative (PO) Pain through the N-Methyl-d-Aspartate (NMDA) Receptors. Antioxidants (Basel) 2022; 11:antiox11091774. [PMID: 36139848 PMCID: PMC9495385 DOI: 10.3390/antiox11091774] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/30/2022] [Accepted: 09/06/2022] [Indexed: 11/29/2022] Open
Abstract
The management of post-operative (PO) pain has generally been shown to be inadequate; therefore, acquiring a novel understanding of PO pain mechanisms would increase the therapeutic options available. There is accumulating evidence to implicate N-methyl-d-aspartate (NMDA) receptors in the induction and maintenance of central sensitization during pain states by reinforcing glutamate sensory transmission. It is known that DMF protects from oxidative glutamate toxicity. Therefore, NMDA receptor antagonists have been implicated in peri-operative pain management. Recent advances demonstrated that dimethyl fumarate (DMF), a non-opioid and orally bioavailable drug, is able to resolve neuroinflammation through mechanisms that drive nociceptive hypersensitivity. Therefore, in this study, we evaluated the role of DMF on pain and neuroinflammation in a mouse model of PO pain. An incision of the hind paw was performed, and DMF at two different doses (30 and 100 mg/kg) was administered by oral gavage for five consecutive days. Mechanical allodynia, thermal hyperalgesia and locomotor dysfunction were evaluated daily for five days after surgery. Mice were sacrificed at day 7 following PO pain induction, and hind paw and lumbar spinal cord samples were collected for histological and molecular studies. DMF administration significantly reduced hyperalgesia and allodynia, alleviating motor disfunction. Treatment with DMF significantly reduced histological damage, counteracted mast cell activation and reduced the nuclear factor kappa-light-chain-enhancer of the activated B cell (NF-κB) inflammatory pathway, in addition to downregulating tumor necrosis factor-α (TNF-α), Interleukin-1β (Il-1β) and Il-4 expression. Interestingly, DMF treatment lowered the activation of NMDA receptor subtypes (NR2B and NR1) and the NMDA-receptor-interacting PDZ proteins, including PSD93 and PSD95. Furthermore, DMF interfered with calcium ion release, modulating nociception. Thus, DMF administration modulated PO pain, managing NMDA signaling pathways. The results suggest that DMF positively modulated persistent nociception related to PO pain, through predominantly NMDA-receptor-operated calcium channels.
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5
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Zhou L, Su S, Yu J, Wan S, Xu X, Li X, Xiong M, Tian W, Wang L, Wu Y, Ke C. Schnurri-2 promotes the expression of excitatory glutamate receptors and contributes to neuropathic pain. Neuroscience 2022; 488:20-31. [PMID: 35218885 DOI: 10.1016/j.neuroscience.2022.02.023] [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: 11/23/2021] [Revised: 02/10/2022] [Accepted: 02/18/2022] [Indexed: 10/19/2022]
Abstract
Neuropathic pain is a type of chronic pain with complex mechanisms, and current treatments have shown limited success in treating patients suffering from chronic pain. Accumulating evidence has shown that the pathogenesis of neuropathic pain is mediated by the plasticity of excitatory neurons in the dorsal horn of the spinal cord, which provides insights into the treatment of hyperalgesia. In this study, we found that Schnurri-2 (Shn2) was significantly upregulated in the L4-L6 segments of the spinal cord of C57 mice with spared nerve injury, which was accompanied by an increase in GluN2D subunit and glutamate receptor subunit 1 (GluR1) levels. Knocking down the expression of Shn2 using a lentivirus in the spinal cord decreased the GluN2D subunit and GluR1 levels in spared nerve injury mice and eventually alleviated mechanical allodynia. In summary, Shn2 regulates neuropathic pain, promotes the upregulation of GluN2D in glutamatergic neurons and increases the accumulation of GluR1 in excitatory neurons. Taken together, our study provides a new underlying mechanism for the development of neuropathic pain.
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Affiliation(s)
- Lingyu Zhou
- Jinzhou Medical University, Jinzhou 121001, China; Institute of Anesthesiology & Pain (IAP), Department of Anesthesiology, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, China
| | - Shanchun Su
- Institute of Anesthesiology & Pain (IAP), Department of Anesthesiology, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, China
| | - Jiaqi Yu
- Institute of Anesthesiology & Pain (IAP), Department of Anesthesiology, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, China
| | - Shengjun Wan
- Institute of Anesthesiology & Pain (IAP), Department of Anesthesiology, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, China
| | - Xueqin Xu
- Institute of Anesthesiology & Pain (IAP), Department of Anesthesiology, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, China
| | - Xiaohui Li
- Institute of Anesthesiology & Pain (IAP), Department of Anesthesiology, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, China
| | - Mengyuan Xiong
- Institute of Anesthesiology & Pain (IAP), Department of Anesthesiology, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, China
| | - Wei Tian
- Institute of Anesthesiology & Pain (IAP), Department of Anesthesiology, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, China
| | - Linhan Wang
- Institute of Anesthesiology & Pain (IAP), Department of Anesthesiology, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, China
| | - Yanqiong Wu
- Institute of Anesthesiology & Pain (IAP), Department of Anesthesiology, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, China
| | - Changbin Ke
- Institute of Anesthesiology & Pain (IAP), Department of Anesthesiology, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, China.
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6
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Qureshi S, Ali G, Idrees M, Muhammad T, Kong IK, Abbas M, Shah MIA, Ahmad S, Sewell RDE, Ullah S. Selected Thiadiazine-Thione Derivatives Attenuate Neuroinflammation in Chronic Constriction Injury Induced Neuropathy. Front Mol Neurosci 2021; 14:728128. [PMID: 34975395 PMCID: PMC8716630 DOI: 10.3389/fnmol.2021.728128] [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: 06/20/2021] [Accepted: 11/17/2021] [Indexed: 11/13/2022] Open
Abstract
Neuropathic pain refers to a lesion or disease of peripheral and/or central somatosensory neurons and is an important body response to actual or potential nerve damage. We investigated the therapeutic potential of two thiadiazine-thione [TDT] derivatives, 2-(5-propyl-6-thioxo-1, 3, 5-thiadiazinan-3-yl) acetic acid [TDT1] and 2-(5-propyl-2-thioxo-1, 3, 5-thiadiazinan-3-yl) acetic acid [TDT2] against CCI (chronic constriction injury)-induced neuroinflammation and neuropathic pain. Mice were used for assessment of acute toxicity of TDT derivatives and no major toxic/bizarre responses were observed. Anti-inflammatory activity was assessed using the carrageenan test, and both TDT1 and TDT2 significantly reduced carrageenan-induced inflammation. We also used rats for the induction of CCI and performed allodynia and hyperalgesia-related behavioral tests followed by biochemical and morphological analysis using RT-qPCR, immunoblotting, immunohistochemistry and immunofluorescence. Our findings revealed that CCI induced clear-cut allodynia and hyperalgesia which was reversed by TDT1 and TDT2. To determine the function of TDT1 and TDT2 in glia-mediated neuroinflammation, Iba1 mRNA and protein levels were measured in spinal cord tissue sections from various experimental groups. Interestingly, TDT1 and TDT2 substantially reduced the mRNA expression and protein level of Iba1, implying that TDT1 and TDT2 may mitigate CCI-induced astrogliosis. In silico molecular docking studies predicted that both compounds had an effective binding affinity for TNF-α and COX-2. The compounds interactions with the proteins were dominated by both hydrogen bonding and van der Waals interactions. Overall, these results suggest that TDT1 and TDT2 exert their neuroprotective and analgesic potentials by ameliorating CCI-induced allodynia, hyperalgesia, neuroinflammation and neuronal degeneration in a dose-dependent manner.
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Affiliation(s)
- Sonia Qureshi
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
| | - Gowhar Ali
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
- Laboratory of Neurogenomics and Novel Therapies, The Ken and Ruth Davee Department of Neurology, Department of Neurology and Clinical Neurosciences, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Muhammad Idrees
- Division of Applied Life Science (BK21 Four), Gyeongsang National University, Jinju, South Korea
- Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, South Korea
| | - Tahir Muhammad
- Molecular Neuropsychiatry and Development (MiND) Lab, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| | - Il-Keun Kong
- Division of Applied Life Science (BK21 Four), Gyeongsang National University, Jinju, South Korea
- Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, South Korea
- The Kingkong Co., Ltd., Gyeongsang National University, Jinju, South Korea
| | - Muzaffar Abbas
- Faculty of Pharmacy, Capital University of Science & Technology, Islamabad, Pakistan
| | | | - Sajjad Ahmad
- Department of Health and Biological Sciences, Abasyn University, Peshawar, Pakistan
| | - Robert D. E. Sewell
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, United Kingdom
| | - Sami Ullah
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
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da Silva JF, Binda NS, Pereira EMR, de Lavor MSL, Vieira LB, de Souza AH, Rigo FK, Ferrer HT, de Castro CJ, Ferreira J, Gomez MV. Analgesic effects of Phα1β toxin: a review of mechanisms of action involving pain pathways. J Venom Anim Toxins Incl Trop Dis 2021; 27:e20210001. [PMID: 34868281 PMCID: PMC8610172 DOI: 10.1590/1678-9199-jvatitd-2021-0001] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Accepted: 03/26/2021] [Indexed: 01/01/2023] Open
Abstract
Phα1β is a neurotoxin purified from spider venom that acts as a high-voltage-activated (HVA) calcium channel blocker. This spider peptide has shown a high selectivity for N-type HVA calcium channels (NVACC) and an analgesic effect in several animal models of pain. Its activity was associated with a reduction in calcium transients, glutamate release, and reactive oxygen species production from the spinal cord tissue and dorsal ganglia root (DRG) in rats and mice. It has been reported that intrathecal (i.t.) administration of Phα1β to treat chronic pain reverted opioid tolerance with a safer profile than ω-conotoxin MVIIA, a highly selective NVACC blocker. Following a recent development of recombinant Phα1β (CTK 01512-2), a new molecular target, TRPA1, the structural arrangement of disulphide bridges, and an effect on glial plasticity have been identified. CTK 01512-2 reproduced the antinociceptive effects of the native toxin not only after the intrathecal but also after the intravenous administration. Herein, we review the Phα1β antinociceptive activity in the most relevant pain models and its mechanisms of action, highlighting the impact of CTK 01512-2 synthesis and its potential for multimodal analgesia.
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Affiliation(s)
- Juliana Figueira da Silva
- Laboratory of Pharmacology, Department of Pharmacy, Federal
University of Ouro Preto, Ouro Preto, MG, Brazil
| | - Nancy Scardua Binda
- Laboratory of Pharmacology, Department of Pharmacy, Federal
University of Ouro Preto, Ouro Preto, MG, Brazil
| | - Elizete Maria Rita Pereira
- Graduate Program in Health Sciences, Institute of Education and
Research, Santa Casa de Belo Horizonte, Belo Horizonte, MG, Brazil
| | | | - Luciene Bruno Vieira
- Department of Pharmacology, Institute of Biological Sciences (ICB),
Federal University of Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Alessandra Hubner de Souza
- Graduate Program in Health Sciences, Institute of Education and
Research, Santa Casa de Belo Horizonte, Belo Horizonte, MG, Brazil
| | - Flávia Karine Rigo
- Graduate Program in Health Sciences, University of the Extreme South
of Santa Catarina (UNESC), Criciúma, SC, Brazil
| | - Hèlia Tenza Ferrer
- Center of Technology in Molecular Medicine, School of Medicine,
Federal University of Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Célio José de Castro
- Graduate Program in Health Sciences, Institute of Education and
Research, Santa Casa de Belo Horizonte, Belo Horizonte, MG, Brazil
| | - Juliano Ferreira
- Department of Pharmacology, Federal University of Santa Catarina,
Florianópolis, SC, Brazil
| | - Marcus Vinicius 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
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Antihypernociceptive and Neuroprotective Effects of the Aqueous and Methanol Stem-Bark Extracts of Nauclea pobeguinii (Rubiaceae) on STZ-Induced Diabetic Neuropathic Pain. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:6637584. [PMID: 33603820 PMCID: PMC7872765 DOI: 10.1155/2021/6637584] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 01/18/2021] [Accepted: 01/20/2021] [Indexed: 12/26/2022]
Abstract
The greatest common and devastating complication of diabetes is painful neuropathy that can cause hyperalgesia and allodynia. It can disturb psychosocial functioning by increasing levels of anxiety and depression. This work was designed to evaluate the antihyperalgesic, antidepressant, and anxiolytic-like effects of the aqueous and methanol extracts of Nauclea pobeguinii stem-bark in diabetic neuropathy induced by streptozotocin in mice. Diabetic neuropathy was induced in mice by the intraperitoneal administration of 200 mg/kg streptozotocin (STZ) to provoke hyperglycemia. Nauclea pobeguinii aqueous and methanol extracts at the doses of 150 and 300 mg/kg were administered by oral route, and their effects were evaluated on antihyperalgesic activity (Von Frey filaments, hot plate, acetone, and formalin tests), blood glucose levels, body weight, serum, sciatic nerve proinflammatory cytokines (TNF-α, IL-1β, and IL-6) and sciatic nerve growth factor (IGF and NGF) rates, depression (open field test, forced swimming test, tail suspension test), and anxiety (elevated plus maze, light-dark box test, social interaction). Oral administration of Nauclea pobeguinii stem-bark aqueous and methanol extracts (150 and 300 mg/kg) produced antihyperalgesic, antidepressant, and anxiolytic-like effects in STZ-induced diabetic neuropathic mice. Extracts also triggered a decrease in glycaemia and increased body weight in treated animals. They also significantly (p <0.001) reduced tumour necrosis factor alpha (TNF-α), interleukin-1 beta (IL-1β), and IL-6 and significantly (p <0.001) increased nerve growth factor (NGF) and insulin-like growth factor (IGF) in sciatic nerves. The results of this study confirmed that Nauclea pobeguinii aqueous and methanol extracts possess antihyperalgesic, antidepressant, and anxiolytic activities and could be beneficial therapeutic agents.
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CB1-cannabinoid-, TRPV1-vanilloid- and NMDA-glutamatergic-receptor-signalling systems interact in the prelimbic cerebral cortex to control neuropathic pain symptoms. Brain Res Bull 2020; 165:118-128. [DOI: 10.1016/j.brainresbull.2020.09.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 08/20/2020] [Accepted: 09/16/2020] [Indexed: 12/28/2022]
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10
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Medeiros P, Dos Santos IR, Medeiros AC, da Silva JA, Ferreira SH, de Freitas RL, Coimbra NC. Indomethacin attenuates mechanical allodynia during the organization but not the maintenance of the peripheral neuropathic pain induced by nervus ischiadicus chronic constriction injury. ACTA ACUST UNITED AC 2020; 53:e9255. [PMID: 32348427 PMCID: PMC7205414 DOI: 10.1590/1414-431x20209255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Accepted: 02/26/2020] [Indexed: 12/19/2022]
Abstract
The neurochemical mechanisms underlying neuropathic pain (NP) are related to peripheral and central sensitization caused by the release of inflammatory mediators in the peripheral damaged tissue and ectopic discharges from the injured nerve, leading to a hyperexcitable state of spinal dorsal horn neurons. The aim of this work was to clarify the role played by cyclooxygenase (COX) in the lesioned peripheral nerve in the development and maintenance of NP by evaluating at which moment the non-steroidal anti-inflammatory drug indomethacin, a non-selective COX inhibitor, attenuated mechanical allodynia after placing one loose ligature around the nervus ischiadicus, an adaptation of Bennett and Xie's model in rodents. NP was induced in male Wistar rats by subjecting them to chronic constriction injury (CCI) of the nervus ischiadicus, placing one loose ligature around the peripheral nerve, and a sham surgery (without CCI) was used as control. Indomethacin (2 mg/kg) or vehicle was intraperitoneally and acutely administered in each group of rats and at different time windows (1, 2, 4, 7, 14, 21, and 28 days) after the CCI or sham surgical procedures, followed by von Frey's test for 30 min. The data showed that indomethacin decreased the mechanical allodynia threshold of rats on the first, second, and fourth days after CCI (P<0.05). These findings suggested that inflammatory mechanisms are involved in the induction of NP and that COX-1 and COX-2 are involved in the induction but not in the maintenance of NP.
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Affiliation(s)
- P Medeiros
- Laboratório de Neurociências da Dor & Emoções, Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - I R Dos Santos
- Laboratório de Dor e Imflamação, Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - A C Medeiros
- Laboratório de Neurociências da Dor & Emoções, Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - J A da Silva
- Departamento de Psicologia, Universidade Federal de Juiz de Fora, Juiz de Fora, MG, Brasil
| | - S H Ferreira
- Laboratório de Dor e Imflamação, Departamento de Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - R L de Freitas
- Laboratório de Neurociências da Dor & Emoções, Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
| | - N C Coimbra
- Laboratório de Neurociências da Dor & Emoções, Departamento de Cirurgia e Anatomia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
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11
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Kim K, Choi S, Cha M, Lee BH. Effects of mTOR inhibitors on neuropathic pain revealed by optical imaging of the insular cortex in rats. Brain Res 2020; 1733:146720. [PMID: 32061737 DOI: 10.1016/j.brainres.2020.146720] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 01/22/2020] [Accepted: 02/07/2020] [Indexed: 11/24/2022]
Abstract
In the pain matrix, the insular cortex (IC) is mainly involved in discriminative sensory and motivative emotion. Abnormal signal transmission from injury site causes neuropathic pain, which generates enhanced synaptic plasticity. The mammalian target of rapamycin (mTOR) complex is the key regulator of protein synthesis; it is involved in the modulation of synaptic plasticity. To date, there has been no report on the changes in optical signals in the IC under neuropathic condition after treatment with mTOR inhibitors, such as Torin1 and XL388. Therefore, we aimed to determine the pain-relieving effect of mTOR inhibitors (Torin1 and XL388) and observe the changes in optical signals in the IC after treatment. Mechanical threshold was measured in adult male Sprague-Dawley rats after neuropathic surgery, and therapeutic effect of inhibitors was assessed on post-operative day 7 following the microinjection of Torin1 or XL388 into the IC. Optical signals were acquired to observe the neuronal activity of the IC in response to peripheral stimulation before and after treatment with mTOR inhibitors. Consequently, the inhibitors showed the most effective alleviation 4 h after microinjection into the IC. In optical imaging, peak amplitudes of optical signals and areas of activated regions were reduced after treatment with Torin1 and XL388. However, there were no significant optical signal changes in the IC before and after vehicle application. These findings suggested that Torin1 and XL388 are associated with the alleviation of neuronal activity that is excessively manifested in the IC, and is assumed to diminish synaptic plasticity.
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Affiliation(s)
- Kyeongmin Kim
- Department of Physiology, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Songyeon Choi
- Department of Physiology, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Myeounghoon Cha
- Department of Physiology, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Bae Hwan Lee
- Department of Physiology, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul 03722, Republic of Korea.
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12
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Liu SB, Wang XS, Yue J, Yang L, Li XH, Hu LN, Lu JS, Song Q, Zhang K, Yang Q, Zhang MM, Bernabucci M, Zhao MG, Zhuo M. Cyclic AMP-dependent positive feedback signaling pathways in the cortex contributes to visceral pain. J Neurochem 2020; 153:252-263. [PMID: 31665810 DOI: 10.1111/jnc.14903] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 10/01/2019] [Accepted: 10/12/2019] [Indexed: 01/02/2023]
Abstract
Cortical areas including the anterior cingulate cortex (ACC) play critical roles in different types of chronic pain. Most of previous studies focus on the sensory inputs from somatic areas, and less information about plastic changes in the cortex for visceral pain. In this study, chronic visceral pain animal model was established by injection with zymosan into the colon of adult male C57/BL6 mice. Whole cell patch-clamp recording, behavioral tests, western blot, and Cannulation and ACC microinjection were employed to explore the role of adenylyl cyclase 1 (AC1) in the ACC of C57/BL6 and AC1 knock out mice. Integrative approaches were used to investigate possible changes of neuronal AC1 in the ACC after the injury. We found that AC1, a key enzyme for pain-related cortical plasticity, was significantly increased in the ACC in an animal model of irritable bowel syndrome. Inhibiting AC1 activity by a selective AC1 inhibitor NB001 significantly reduced the up-regulation of AC1 protein in the ACC. Furthermore, we found that AC1 is required for NMDA GluN2B receptor up-regulation and increases of NMDA receptor-mediated currents. These results suggest that AC1 may form a positive regulation in the cortex during chronic visceral pain. Our findings demonstrate that the up-regulation of AC1 protein in the cortex may underlie the pathology of chronic visceral pain; and inhibiting AC1 activity may be beneficial for the treatment of visceral pain.
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Affiliation(s)
- Shui-Bing Liu
- Precision Pharmacy & Drug Development Center, Department of Pharmacy, Tangdu Hospital, Fourth Military Medical University, Xi'an, China.,Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi'an, China.,Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Xin-Shang Wang
- Precision Pharmacy & Drug Development Center, Department of Pharmacy, Tangdu Hospital, Fourth Military Medical University, Xi'an, China.,Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi'an, China
| | - Jiao Yue
- Precision Pharmacy & Drug Development Center, Department of Pharmacy, Tangdu Hospital, Fourth Military Medical University, Xi'an, China.,Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi'an, China
| | - Le Yang
- Precision Pharmacy & Drug Development Center, Department of Pharmacy, Tangdu Hospital, Fourth Military Medical University, Xi'an, China.,Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi'an, China
| | - Xu-Hui Li
- Center for Neuron and Disease, Frontier Institutes of Life Science and of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Li-Ning Hu
- Precision Pharmacy & Drug Development Center, Department of Pharmacy, Tangdu Hospital, Fourth Military Medical University, Xi'an, China.,Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi'an, China
| | - Jing-Shan Lu
- Center for Neuron and Disease, Frontier Institutes of Life Science and of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Qian Song
- Center for Neuron and Disease, Frontier Institutes of Life Science and of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Kun Zhang
- Precision Pharmacy & Drug Development Center, Department of Pharmacy, Tangdu Hospital, Fourth Military Medical University, Xi'an, China.,Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi'an, China
| | - Qi Yang
- Precision Pharmacy & Drug Development Center, Department of Pharmacy, Tangdu Hospital, Fourth Military Medical University, Xi'an, China.,Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi'an, China
| | - Ming-Ming Zhang
- Department of Anatomy, Histology, Embryology & K. K. Leung Brain Research Centre, Fourth Military Medical University, Xi'an, China
| | - Matteo Bernabucci
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Ming-Gao Zhao
- Precision Pharmacy & Drug Development Center, Department of Pharmacy, Tangdu Hospital, Fourth Military Medical University, Xi'an, China.,Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi'an, China
| | - Min Zhuo
- Department of Physiology, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.,Center for Neuron and Disease, Frontier Institutes of Life Science and of Science and Technology, Xi'an Jiaotong University, Xi'an, China
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13
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Choi S, Kim K, Cha M, Kim M, Lee BH. mTOR signaling intervention by Torin1 and XL388 in the insular cortex alleviates neuropathic pain. Neurosci Lett 2020; 718:134742. [PMID: 31917234 DOI: 10.1016/j.neulet.2020.134742] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 12/19/2019] [Accepted: 01/03/2020] [Indexed: 12/27/2022]
Abstract
Signaling by mammalian target of rapamycin (mTOR), a kinase regulator of protein synthesis, has been implicated in the development of chronic pain. The mTOR comprises two distinct protein complexes, mTOR complex 1 (mTORC1) and mTORC2. Although effective inhibitors of mTORC1 and C2 have been developed, studies on the effect of these inhibitors related to pain modulation are still lacking. This study was conducted to determine the inhibitory effects of Torin1 and XL388 in an animal model of neuropathic pain. Seven days after neuropathic surgery, Torin1 or XL388 were microinjected into the insular cortex (IC) of nerve-injured animals and behavioral changes were assessed. Administration of Torin1 or XL388 into the IC significantly increased mechanical thresholds and reduced mechanical allodynia. At the immunoblotting results, Torin1 and XL388 significantly reduced phosphorylation of mTOR, 4E-BP1, p70S6K, and PKCα, without affecting Akt. These results strongly suggest that Torin1 and XL388 may attenuate neuropathic pain via inhibition of mTORC1 and mTORC2 in the IC.
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Affiliation(s)
- Songyeon Choi
- Department of Physiology, Yonsei University College of Medicine, Seoul, Republic of Korea; Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Kyeongmin Kim
- Department of Physiology, Yonsei University College of Medicine, Seoul, Republic of Korea; Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Myeounghoon Cha
- Department of Physiology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Minjee Kim
- Department of Physiology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Bae Hwan Lee
- Department of Physiology, Yonsei University College of Medicine, Seoul, Republic of Korea; Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea.
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14
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N-methyl-d-aspartate Receptors in the Prelimbic Cortex are Critical for the Maintenance of Neuropathic Pain. Neurochem Res 2019; 44:2068-2080. [DOI: 10.1007/s11064-019-02843-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 06/27/2019] [Accepted: 07/04/2019] [Indexed: 12/13/2022]
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15
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Geraets CNW, van Beilen M, van Dijk M, Kleijer H, Köhne C, van der Hoeven JH, Groen GJ, Ćurčić-Blake B, Schoevers RA, Maurits NM, Kortekaas R. Lack of analgesic effects of transcranial pulsed electromagnetic field stimulation in neuropathic pain patients: A randomized double-blind crossover trial. Neurosci Lett 2019; 699:212-216. [PMID: 30710664 DOI: 10.1016/j.neulet.2019.01.051] [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: 11/21/2018] [Revised: 01/22/2019] [Accepted: 01/30/2019] [Indexed: 11/18/2022]
Abstract
BACKGROUND Neuromodulation is nowadays investigated as a promising method for pain relief. Research indicates that a single 30-minute stimulation with transcranial pulsed electromagnetic fields (tPEMF) can induce analgesic effects. However, it is unknown whether tPEMF can induce analgesia in neuropathic pain patients. OBJECTIVE To evaluate the effect of tPEMF on spontaneous pain and heat pain in neuropathic pain patients. METHODS This study had a randomized double-blind crossover design. Twenty neuropathic pain patients received 30-minutes of tPEMF and 30-minutes sham stimulation. Primary outcomes were pain intensity, pain aversion and heat pain. Secondary outcomes included affect, cognition, and motor function, to investigate safety, tolerability and putative working mechanisms of tPEMF. Outcomes were assessed before, during and after stimulation. RESULTS No differences in analgesic effects between tPEMF and sham stimulation were found for pain intensity, pain aversion or heat pain. No differences between tPEMF and sham stimulation were observed for affect, motor, and cognitive outcomes. CONCLUSION A single 30-minute tPEMF stimulation did not induce analgesic effects in neuropathic pain patients, compared to sham. Further study is needed to determine whether prolonged stimulation is necessary for analgesic effects.
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Affiliation(s)
- Chris N W Geraets
- University of Groningen, University Medical Center Groningen, Department of Psychiatry, Research School of Behavioural and Cognitive Neurosciences, Groningen, the Netherlands.
| | - Marije van Beilen
- University of Groningen, University Medical Center Groningen, Department of Psychiatry, Research School of Behavioural and Cognitive Neurosciences, Groningen, the Netherlands
| | - Mirjan van Dijk
- University of Groningen, University Medical Center Groningen, Department of Neuroscience, Groningen, the Netherlands
| | - Hidde Kleijer
- University of Groningen, University Medical Center Groningen, Department of Neuroscience, Groningen, the Netherlands
| | - Charlotte Köhne
- University of Groningen, University Medical Center Groningen, Department of Neuroscience, Groningen, the Netherlands
| | - Johannes H van der Hoeven
- University of Groningen, University Medical Center Groningen, Department of Neurology, Groningen, the Netherlands
| | - Gerbrand J Groen
- University of Groningen, University Medical Center Groningen, Anesthesiology Pain Centre, Groningen, the Netherlands
| | - Branislava Ćurčić-Blake
- University of Groningen, University Medical Center Groningen, Department of Neuroscience, Groningen, the Netherlands
| | - Robert A Schoevers
- University of Groningen, University Medical Center Groningen, Department of Psychiatry, Research School of Behavioural and Cognitive Neurosciences, Groningen, the Netherlands
| | - Natasha M Maurits
- University of Groningen, University Medical Center Groningen, Department of Neurology, Groningen, the Netherlands
| | - Rudie Kortekaas
- University of Groningen, University Medical Center Groningen, Department of Neuroscience, Groningen, the Netherlands
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16
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Yang CH, Yip HK, Chen HF, Yin TC, Chiang JY, Sung PH, Lin KC, Tsou YH, Chen YL, Li YC, Huang TH, Huang CR, Luo CW, Chen KH. Long-term Therapeutic Effects of Extracorporeal Shock Wave-Assisted Melatonin Therapy on Mononeuropathic Pain in Rats. Neurochem Res 2019; 44:796-810. [PMID: 30632086 DOI: 10.1007/s11064-018-02713-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 12/31/2018] [Indexed: 01/21/2023]
Abstract
We evaluated the ability of extracorporeal shock wave (ECSW)-assisted melatonin (Mel) therapy to offer an additional benefit for alleviating the neuropathic pain (NP) in rats. Left sciatic nerve was subjected to chronic constriction injury (CCI) to induce NP. Animals (n = 30) were randomized into group 1 (sham-operated control), group 2 (CCI only), group 3 (CCI + ECSW), group 4 (CCI + Mel) and group 5 (CCI + ECSW + Mel). By days 15, 22 and 29 after CCI, the thermal paw withdrawal latency (TPWL) and mechanical paw withdrawal threshold (MPWT) were highest in group 1, lowest in group 2, significantly higher in group 5 than in groups 3 and 4, but they showed no difference between the later two groups (all p < 0.0001). The protein expressions of inflammatory (TNF-α, NF-κB, MMP-9, IL-1ß), oxidative-stress (NOXs-1, -2, -4, oxidized protein), apoptotic (cleaved-caspase3, cleaved-PARP), DNA/mitochondrial-damaged (γ-H2AX/cytosolic-cytochrome C), microglia/astrocyte activation (ox42/GFAP), and MAPKs [phosphorylated (p)-p38, p-JNK, p-ERK] biomarkers in dorsal root ganglia neurons (DRGs) and in spinal dorsal horn were exhibited an opposite pattern of TPWL among the five groups (all p < 0.0001). Additionally, protein expressions of Nav.1.3, Nav.1.8 and Nav.1.9 in sciatic nerve exhibited an identical pattern to inflammation among the five groups (all p < 0.0001). The numbers of cellular expressions of MAPKs (p-ERK1/2+/peripherin + cells, p-ERK1/2+/NF200 + cells and p-JNK+/peripherin + cells, p-JNK+/NF200 + cells) and voltage-gated sodium channels (Nav.1.8+/peripherin + cells, Nav.1.8+/NF200 + cells, Nav.1.9+/peripherin + cells, Nav.1.9+/NF200 + cells) in small and large DRGs displayed an identical pattern to inflammation among the five groups (all p < 0.0001). In conclusion, the synergistic effect of combined ECSW-Mel therapy is superior to either one alone for long-term improvement of mononeuropathic pain-induced by CCI in rats.
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Affiliation(s)
- Chien-Hui Yang
- Department of Anesthesiology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, No. 123, Dapi Rd., Niaosong Dist, Kaohsiung, 83301, Taiwan
| | - Hon-Kan Yip
- Division of Cardiology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, 83301, Taiwan
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, 83301, Taiwan
- Center for Shockwave Medicine and Tissue Engineering, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, 83301, Taiwan
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, 40402, Taiwan
- Department of Nursing, Asia University, Taichung, 41354, Taiwan
| | - Hung-Fei Chen
- Institute of Technological and Vocational Education, National Pingtung University of Science and Technology, Pingtung, 91201, Taiwan
| | - Tsung-Cheng Yin
- Department of Orthopaedic Surgery, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, 83301, Taiwan
| | - John Y Chiang
- Department of Computer Science and Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Pei-Hsun Sung
- Division of Cardiology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, 83301, Taiwan
| | - Kun-Chen Lin
- Department of Anesthesiology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, No. 123, Dapi Rd., Niaosong Dist, Kaohsiung, 83301, Taiwan
| | - Yu-Huan Tsou
- Department of Anesthesiology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, No. 123, Dapi Rd., Niaosong Dist, Kaohsiung, 83301, Taiwan
| | - Yi-Ling Chen
- Division of Cardiology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, 83301, Taiwan
| | - Yi-Chen Li
- Division of Cardiology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, 83301, Taiwan
| | - Tien-Hung Huang
- Division of Cardiology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, 83301, Taiwan
| | - Chi-Ruei Huang
- Division of Cardiology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, 83301, Taiwan
| | - Chi-Wen Luo
- Division of Cardiology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, 83301, Taiwan
| | - Kuan-Hung Chen
- Department of Anesthesiology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, No. 123, Dapi Rd., Niaosong Dist, Kaohsiung, 83301, Taiwan.
- Center for Shockwave Medicine and Tissue Engineering, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, 83301, Taiwan.
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17
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Um SW, Kim MJ, Leem JW, Bai SJ, Lee BH. Pain-Relieving Effects of mTOR Inhibitor in the Anterior Cingulate Cortex of Neuropathic Rats. Mol Neurobiol 2018; 56:2482-2494. [PMID: 30032425 PMCID: PMC6459802 DOI: 10.1007/s12035-018-1245-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 07/15/2018] [Indexed: 01/22/2023]
Abstract
The anterior cingulate cortex (ACC) is a well-known brain area that is associated with pain perception. Previous studies reported that the ACC has a specific role in the emotional processing of pain. Chronic pain is characterized by long-term potentiation that is induced in pain pathways and contributes to hyperalgesia caused by peripheral nerve injury. The mammalian target of rapamycin (mTOR) signaling, which is involved in synaptic protein synthesis, could be a key factor controlling long-term potentiation in neuropathic pain conditions. Until now, there have been no reports that studied the role of mTOR signaling in the ACC involved in neuropathic pain. Therefore, this study was conducted to determine the relationship of mTOR signaling in the ACC and neuropathic pain. Male Sprague-Dawley rats were subjected to cannula implantation and nerve injury under pentobarbital anesthesia. Microinjection with rapamycin into the ACC was conducted under isoflurane anesthesia on postoperative day (POD) 7. A behavioral test was performed to evaluate mechanical allodynia, and optical imaging was conducted to observe the neuronal responses of the ACC to peripheral stimulation. Inhibition of mTOR by rapamycin reduced mechanical allodynia, down-regulated mTOR signaling in the ACC, and diminished the expressions of synaptic proteins which are involved in excitatory signaling, thereby reducing neuropathic pain-induced synaptic plasticity. These results suggest that inhibiting mTOR activity by rapamycin in the ACC could serve as a new strategy for treating or managing neuropathic pain before it develops into chronic pain.
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Affiliation(s)
- Sun Woo Um
- Department of Physiology, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Min Jee Kim
- Department of Physiology, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Joong Woo Leem
- Department of Physiology, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Sun Joon Bai
- Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Bae Hwan Lee
- Department of Physiology, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea.
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18
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Tenci B, Di Cesare Mannelli L, Maresca M, Micheli L, Pieraccini G, Mulinacci N, Ghelardini C. Effects of a water extract of Lepidium meyenii root in different models of persistent pain in rats. ACTA ACUST UNITED AC 2018; 72:449-457. [PMID: 28822987 DOI: 10.1515/znc-2016-0251] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 07/24/2017] [Indexed: 12/19/2022]
Abstract
Lepidium meyenii (Walp.), commonly called maca, is an Andean crop belonging to the Brassicaceae family. Maca hypocotils are habitually consumed as customary food as well as traditional remedies for pathological conditions such as infertility. Moreover, the characterization of maca extracts revealed the presence of compounds that are able to modulate the nervous system. Aimed to evaluate the efficacy of L. meyenii in persistent pain, the present study analyzed the effects of a commercial root extract from maca in different animal models reproducing the most common causes of chronic painful pathologies. A qualitative characterization of this commercial extract by high performance liquid chromatography-mass spectrometry and tandem mass spectrometry analyses allowed us to confirm the presence of some macamides known as bioactive constituents of this root and the absence of the main aromatic glucosinolates. The acute oral administration of maca extract is able to reduce mechanical hypersensitivity and postural unbalance induced by the intra-articular injection of monoiodoacetate and the chronic-constriction injury of the sciatic nerve. Furthermore, L. meyenii extract reverts pain threshold alterations evoked by oxaliplatin and paclitaxel. A good safety profile in mice and rats was shown. In conclusion, the present maca extract could be considered as a therapeutic opportunity to relieve articular and neuropathic pain.
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Sudo RT, do Amaral RV, Monteiro CEDS, Pitta IDR, Lima MDC, Montes GC, Ririe DG, Hayashida K, Zapata-Sudo G. Antinociception induced by a novel α 2A adrenergic receptor agonist in rodents acute and chronic pain models. Eur J Pharmacol 2017; 815:210-218. [PMID: 28935564 DOI: 10.1016/j.ejphar.2017.09.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 09/06/2017] [Accepted: 09/14/2017] [Indexed: 01/05/2023]
Abstract
The mechanisms and antinociceptive effects of a novel α2A adrenoceptor agonist, 3-(2-chloro-6-fluorobenzil)-imidazolinide-2,4-dione (PT-31) were investigated using animal models of acute and chronic pain. The effects of PT-31 on pain responses were examined using hot plate and formalin tests in mice and spinal nerve ligation (SNL)-induced hyperalgesia in rats. The effects of antagonists acting on α adrenoceptor were assessed to investigate the interaction of these pathways upon PT-31 induced antinociception. PT-31 effects on motor activity/skills and on hemodynamic parameters were also evaluated. PT-31 had dose-dependent antinociception effects on hot-plate and formalin-injection induced pain responses. Thermal hyperalgesia and mechanical allodynia were reduced following a 7 d treatment with PT-31 (1, 5, and 10mg/kg/d, p.o.), and those effects were attenuated by yohimbine (5mg/kg), atropine (2mg/kg), L-nitro arginine methyl ester (L-NAME; 30mg/kg), or naloxone (2mg/kg). In contrast to clonidine, PT-31 did not have locomotor or hemodynamic effects in rats. The present results suggest that PT-31 represents a candidate for pain treatment with advantages over clonidine, namely no locomotor or hemodynamic impairments.
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Affiliation(s)
- Roberto Takashi Sudo
- Programa de Pesquisa em Desenvolvimento de Fármacos, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, RJ, Brazil.
| | - Rachel Vieiralves do Amaral
- Programa de Pesquisa em Desenvolvimento de Fármacos, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, RJ, Brazil
| | - Carlos Eduardo da Silva Monteiro
- Programa de Pesquisa em Desenvolvimento de Fármacos, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, RJ, Brazil
| | - Ivan da Rocha Pitta
- Núcleo de Pesquisa em Inovação Terapêutica, Universidade Federal de Pernambuco, PE, Brazil
| | - Maria do Carmo Lima
- Núcleo de Pesquisa em Inovação Terapêutica, Universidade Federal de Pernambuco, PE, Brazil
| | - Guilherme Carneiro Montes
- Programa de Pesquisa em Desenvolvimento de Fármacos, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, RJ, Brazil
| | - Douglas Gordon Ririe
- Department of Anesthesiology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Kenichiro Hayashida
- Department of Neurophysiology, Akita University School of Medicine, Akita, Japan
| | - Gisele Zapata-Sudo
- Programa de Pesquisa em Desenvolvimento de Fármacos, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, RJ, Brazil
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Soluble Epoxide Hydrolase Inhibitor and 14,15-Epoxyeicosatrienoic Acid-Facilitated Long-Term Potentiation through cAMP and CaMKII in the Hippocampus. Neural Plast 2017; 2017:3467805. [PMID: 29138698 PMCID: PMC5613711 DOI: 10.1155/2017/3467805] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 07/03/2017] [Accepted: 07/27/2017] [Indexed: 01/18/2023] Open
Abstract
Epoxyeicosatrienoic acids (EETs) are derived from arachidonic acid and metabolized by soluble epoxide hydrolase (sEH). The role of EETs in synaptic function in the central nervous system is still largely unknown. We found that pharmacological inhibition of sEH to stabilize endogenous EETs and exogenous 14,15-EET significantly increased the field excitatory postsynaptic potential (fEPSP) response in the CA1 area of the hippocampus, while additionally enhancing high-frequency stimulation- (HFS-) induced long-term potentiation (LTP) and forskolin- (FSK-) induced LTP. sEH inhibitor (sEHI) N-[1-(oxopropyl)-4-piperidinyl]-N'-[4-(trifluoromethoxy) phenyl)-urea (TPPU) and exogenous 14,15-EET increased HFS-LTP, which could be blocked by an N-methyl-D-aspartate (NMDA) receptor subunit NR2B antagonist. TPPU- or 14,15-EET-facilitated FSK-mediated LTP can be potentiated by an A1 adenosine receptor antagonist and a phosphodiesterase inhibitor, but is prevented by a cAMP-dependent protein kinase (PKA) inhibitor. sEHI and 14,15-EET upregulated the activation of extracellular signal-regulated kinases (ERKs) and Ca2+/calmodulin- (CaM-) dependent protein kinase II (CaMKII). Phosphorylation of synaptic receptors NR2B and α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) receptor subunit GluR1 was increased by TPPU and 14,15-EET administration. These results indicated that EETs increased NMDAR- and FSK-mediated synaptic potentiation via the AC-cAMP-PKA signaling cascade and upregulated the ERKs and CaMKII, resulting in increased phosphorylation of NR2B and GluR1 in the hippocampus.
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Kaur M, Singh A, Kumar B, Singh SK, Bhatia A, Gulati M, Prakash T, Bawa P, Malik AH. Protective effect of co-administration of curcumin and sildenafil in alcohol induced neuropathy in rats. Eur J Pharmacol 2017; 805:58-66. [PMID: 28315678 DOI: 10.1016/j.ejphar.2017.03.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 03/07/2017] [Accepted: 03/10/2017] [Indexed: 12/14/2022]
Abstract
Neuropathic pain associated with chronic alcohol consumption is a medico-socioeconomical problem that affects both central and peripheral nervous system and has no satisfactory treatment till date. The present study was designed to investigate the protective effect of co-administration of curcumin and sildenafil on alcohol induced neuropathic pain in rats. In order to carry out this, ethanol (35% v/v, 10g/kg, p.o.) was administered for 10 weeks to induce neuropathic pain. Curcumin (30 and 60mg/kg, i.p.) and sildenafil (5 and 10mg/kg, i.p.) were given alone and in combination at their lower doses (30mg/kg curcumin and 5mg/kg, sildenafil, i.p.) to investigate the changes in thermal and mechanical hyperalgesia, allodynia and histopathological parameters. Biochemical estimations of thiobarbituric acid reactive species, glutathione and protein was also carried out to evaluate oxidative stress. The results revealed that chronic alcohol consumption for 10 weeks caused significant thermal and mechanical hyperalgesia, allodynia and increased oxidative stress. Individual administration of both the drugs at their low as well as high doses were able to improve the symptoms of alcohol induced neuropathic pain. Whereas co-administration of curcumin and sildenafil at their lower doses itself were found to significantly improve nerve functions, biochemical and histopathological parameters as compared to their individual administration. It is therefore proposed that co-administration of curcumin and sildenafil may bring new dimension towards attenuation of alcohol induced neuropathic pain affecting central as well as peripheral nervous system.
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Affiliation(s)
- Maninder Kaur
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, India
| | - Amarjeet Singh
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, India
| | - Bimlesh Kumar
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, India.
| | - Sachin Kumar Singh
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, India
| | - Amit Bhatia
- Amity Institute of Pharmacy, Amity University, Noida, Uttar Pradesh, India
| | - Monica Gulati
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, India
| | - T Prakash
- Department of Physiology and Pharmacology, Acharya and B.M. Reddy College of Pharmacy, Bangalore, Karnataka, India
| | - Palak Bawa
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, India
| | - Adil Hussain Malik
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, India
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Santos JA, Piccinelli AC, Formagio MD, Oliveira CS, dos Santos EP, Alves Stefanello MÉ, Lanza Junior U, Oliveira RJ, Sugizaki MM, Kassuya CAL. Antidepressive and antinociceptive effects of ethanolic extract and fruticuline A from Salvia lachnostachys Benth leaves on rodents. PLoS One 2017; 12:e0172151. [PMID: 28222143 PMCID: PMC5319787 DOI: 10.1371/journal.pone.0172151] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 01/31/2017] [Indexed: 12/16/2022] Open
Abstract
Objectives This study investigated the antidepressant and antinociceptive effects of ethanolic extract (SLEE) and pure fruticuline A obtained from Salvia lachnostachys leaves on rats and mice. Methods In this study, SLEE (100 mg/kg, p.o. route) was evaluated for its effects on spared nerve injury (SNI) in rats. The animals were submitted to mechanical sensitivity, forced swim (FST) and cold sensitivity tests 10 and 15 days after surgery. SLEE (100 mg/kg, p.o.) and fruticuline A (3 mg/kg, p.o.) were also evaluated with respect to nociceptive behavior induced by formalin. In addition, clonidine-induced depressive-like behavior was also analyzed. Results The oral administration of SLEE for up to 15 days and the subcutaneous injection of 10 mg/kg of ketamine (positive control) significantly inhibited SNI-induced mechanical hyperalgesia and decreased immobility in the FST. On the 15th day of oral treatment, SLEE prevented the SNI-induced increase in cold sensitivity. In the formalin test, SLEE and fruticuline A significantly reduced the frequency of paw licking during the first and second phases and decreased the formation of edema. In locomotor analysis (open field test without clonidine treatment), SLEE and fruticuline A did not alter the response. SLEE and fruticuline A significantly attenuated clonidine-induced suppression of spontaneous locomotor activity (squares invaded and licking) and emotionality (grooming and freezing) compared with controls, similar to the naive group. Conclusion SLEE exhibits antihyperalgesic, antidepressant, and antinociceptive effects, and fruticuline A appears to be at least partly responsible for the effects of SLEE. Together, these results demonstrate the antidepressive effects of SLEE and fruticuline A and indicate that both derivatives obtained from S. lachnostachys act against spontaneous neuropathic pain.
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Affiliation(s)
- Joyce Alencar Santos
- Federal University of Grande Dourados, College Exact Sciences and Technology, Dourados, Mato Grosso do Sul, Brazil
- * E-mail:
| | | | - Maira Dante Formagio
- Federal University of Grande Dourados, College of Health Science, Dourados, MS, Brazil
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Sex differences in hypothalamic-mediated tonic norepinephrine release for thermal hyperalgesia in rats. Neuroscience 2016; 324:420-9. [DOI: 10.1016/j.neuroscience.2016.03.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 03/10/2016] [Accepted: 03/11/2016] [Indexed: 12/31/2022]
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Velasco M, O'Sullivan C, Sheridan GK. Lysophosphatidic acid receptors (LPARs): Potential targets for the treatment of neuropathic pain. Neuropharmacology 2016; 113:608-617. [PMID: 27059127 DOI: 10.1016/j.neuropharm.2016.04.002] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 12/15/2015] [Accepted: 04/04/2016] [Indexed: 01/08/2023]
Abstract
Neuropathic pain can arise from lesions to peripheral or central nerve fibres leading to spontaneous action potential generation and a lowering of the nociceptive threshold. Clinically, neuropathic pain can manifest in many chronic disease states such as cancer, diabetes or multiple sclerosis (MS). The bioactive lipid, lysophosphatidic acid (LPA), via activation of its receptors (LPARs), is thought to play a central role in both triggering and maintaining neuropathic pain. In particular, following an acute nerve injury, the excitatory neurotransmitters glutamate and substance P are released from primary afferent neurons leading to upregulated synthesis of lysophosphatidylcholine (LPC), the precursor for LPA production. LPC is converted to LPA by autotaxin (ATX), which can then activate macrophages/microglia and modulate neuronal functioning. A ubiquitous feature of animal models of neuropathic pain is demyelination of damaged nerves. It is thought that LPA contributes to demyelination through several different mechanisms. Firstly, high levels of LPA are produced following macrophage/microglial activation that triggers a self-sustaining feed-forward loop of de novo LPA synthesis. Secondly, macrophage/microglial activation contributes to inflammation-mediated demyelination of axons, thus initiating neuropathic pain. Therefore, targeting LPA production and/or the family of LPA-activated G protein-coupled receptors (GPCRs) may prove to be fruitful clinical approaches to treating demyelination and the accompanying neuropathic pain. This review discusses our current understanding of the role of LPA/LPAR signalling in the initiation of neuropathic pain and suggests potential targeted strategies for its treatment. This article is part of the Special Issue entitled 'Lipid Sensing G Protein-Coupled Receptors in the CNS'.
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Affiliation(s)
- María Velasco
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton BN2 4GJ, UK
| | | | - Graham K Sheridan
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Brighton BN2 4GJ, UK.
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Brito RG, Araújo AAS, Quintans JSS, Sluka KA, Quintans-Júnior LJ. Enhanced analgesic activity by cyclodextrins - a systematic review and meta-analysis. Expert Opin Drug Deliv 2015; 12:1677-88. [PMID: 26159048 DOI: 10.1517/17425247.2015.1046835] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
INTRODUCTION Analgesics can be ineffective in treating some types of pain, hence, improved drug delivery systems could optimize their efficacy. AREA COVERED The authors conducted a systematic review to evaluate the analgesic activity of compounds complexed in cyclodextrins, analyzing whether these complexes improved analgesic efficacy. The search terms 'analgesics', 'cyclodextrins' and 'drug effects' were used to retrieve articles in SCOPUS, PUBMED and EMBASE. A total of 22 papers were identified. In the clinical studies, there was greater efficacy in the complexed drug when compared with control groups, with differences ranging from 25 to 83%. Through a meta-analysis, the preclinical studies showed that the complexed drug had a significantly (p < 0.01) greater effect than the non-complexed drug. EXPERT OPINION The use of cyclodextrins can improve the efficacy of analgesic compounds, and they are an important tool in the search for greater analgesic effect. They may also be a way to reduce the therapeutic doses, and hence increasing the potential of the drug.
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Affiliation(s)
- Renan G Brito
- a 1 Federal University of Sergipe, Department of Physiology , São Cristóvão, Sergipe, Brazil +55 79 2105 6640 ; ; .,b 2 University of Iowa, Carver College of Medicine, Physical Therapy and Rehabilitation Science , Iowa City, IA, USA
| | - Adriano A S Araújo
- c 3 Federal University of Sergipe, Department of Pharmacy , São Cristóvão, Sergipe, Brazil
| | - Jullyana S S Quintans
- a 1 Federal University of Sergipe, Department of Physiology , São Cristóvão, Sergipe, Brazil +55 79 2105 6640 ; ;
| | - Kathleen A Sluka
- b 2 University of Iowa, Carver College of Medicine, Physical Therapy and Rehabilitation Science , Iowa City, IA, USA
| | - Lucindo J Quintans-Júnior
- a 1 Federal University of Sergipe, Department of Physiology , São Cristóvão, Sergipe, Brazil +55 79 2105 6640 ; ; .,b 2 University of Iowa, Carver College of Medicine, Physical Therapy and Rehabilitation Science , Iowa City, IA, USA
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Di Cesare Mannelli L, Marcoli M, Micheli L, Zanardelli M, Maura G, Ghelardini C, Cervetto C. Oxaliplatin evokes P2X7-dependent glutamate release in the cerebral cortex: A pain mechanism mediated by Pannexin 1. Neuropharmacology 2015; 97:133-41. [PMID: 26071109 DOI: 10.1016/j.neuropharm.2015.05.037] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 05/11/2015] [Accepted: 05/27/2015] [Indexed: 01/29/2023]
Abstract
Anticancer therapy based on the repeated administration of oxaliplatin is limited by the development of a neuropathic syndrome difficult to treat. Oxaliplatin neurotoxicity is based on complex nervous mechanisms, the comprehension of the role of single neurotransmitters and the knowledge of the signal flow among cells is matter of importance to improve therapeutic chances. In a rat model of oxaliplatin-induced neuropathy, we report increased P2X7-evoked glutamate release from cerebrocortical synaptosomes. The release was abolished by the P2X7 receptor (P2X7R) antagonists Brilliant-Blue-G (BBG) and A-438079, and significantly reduced by Carbenoxolone and the Pannexin 1 (Panx1) selective inhibitors Erioglaucine and (10)Panx suggesting the recruitment of Panx1. Aimed to evaluate the significance of P2X7R-Panx1 system activation in pain generated by oxaliplatin, pharmacological modulators were spinally infused by intrathecal catheter in oxaliplatin-treated animals. BBG, Erioglaucine and (10)Panx reverted oxaliplatin-dependent pain. Finally, the influence of the P2X7R-Panx1 system blockade on oxaliplatin anticancer activity was evaluated on the human colon cancer cell line HT-29. Prevention of HT-29 apoptosis and mortality was dependent by kind and concentration of P2X7R antagonists. On the contrary, the inhibition of Panx1 did not alter oxaliplatin lethality in tumor cells. It is concluded that glutamate release dependent on P2X7R is increased in cerebrocortical nerve terminals from oxaliplatin-treated rats; the increase is mediated by functional recruitment of Panx1; P2X7R antagonists and Panx1 inhibitors revert oxaliplatin-induced neuropathic pain; Panx1 inhibitors do not alter the oxaliplatin-induced mortality of cancer cells HT-29. The inhibition of Panx1 channel is suggested as a new and safe pharmacological target.
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Affiliation(s)
- Lorenzo Di Cesare Mannelli
- Department of Neuroscience, Psychology, Drug Research and Child Health - Neurofarba, Pharmacology and Toxicology Section, University of Florence, Florence, Italy.
| | - Manuela Marcoli
- Department of Pharmacy, Pharmacology and Toxicology Section, University of Genova, Genova, Italy.
| | - Laura Micheli
- Department of Neuroscience, Psychology, Drug Research and Child Health - Neurofarba, Pharmacology and Toxicology Section, University of Florence, Florence, Italy
| | - Matteo Zanardelli
- Department of Neuroscience, Psychology, Drug Research and Child Health - Neurofarba, Pharmacology and Toxicology Section, University of Florence, Florence, Italy
| | - Guido Maura
- Department of Pharmacy, Pharmacology and Toxicology Section, University of Genova, Genova, Italy
| | - Carla Ghelardini
- Department of Neuroscience, Psychology, Drug Research and Child Health - Neurofarba, Pharmacology and Toxicology Section, University of Florence, Florence, Italy
| | - Chiara Cervetto
- Department of Pharmacy, Pharmacology and Toxicology Section, University of Genova, Genova, Italy
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Xifró X, Vidal-Sancho L, Boadas-Vaello P, Turrado C, Alberch J, Puig T, Verdú E. Novel epigallocatechin-3-gallate (EGCG) derivative as a new therapeutic strategy for reducing neuropathic pain after chronic constriction nerve injury in mice. PLoS One 2015; 10:e0123122. [PMID: 25855977 PMCID: PMC4391943 DOI: 10.1371/journal.pone.0123122] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Accepted: 02/18/2015] [Indexed: 02/07/2023] Open
Abstract
Neuropathic pain is common in peripheral nerve injury and often fails to respond to ordinary medication. Here, we investigated whether the two novel epigallocatechin-3-gallate (EGCG) polyphenolic derivatives, compound 23 and 30, reduce the neuropathic pain in mice chronic constriction nerve injury (CCI). First, we performed a dose-response study to evaluate nociceptive sensation after administration of EGCG and its derivatives 23 and 30, using the Hargreaves test at 7 and 21 days after injury (dpi). We daily administered EGCG, 23 and 30 (10 to 100 mg/Kg; i.p.) during the first week post-CCI. None of the doses of compound 23 caused significant pain diminution, whereas 50mg/kg was optimal for both EGCG and 30 to delay the latency of paw withdrawal. With 50 mg/Kg, we showed that EGCC prevented the thermal hyperalgesia from 7 to 21 dpi and compound 30 from 14 to 56 dpi. To evaluate the molecular mechanisms underpinning why EGCG and compound 30 differentially prevented the thermal hyperalgesia, we studied several biochemical parameters in the dorsal horn of the spinal cord at 14 and 56 dpi. We showed that the effect observed with EGCG and compound 30 was related to the inhibition of fatty acid synthase (FASN), a known target of these polyphenolic compounds. Additionally, we observed that EGCG and compound 30 reduced the expression of CCI-mediated inflammatory proteins and the nuclear localization of nuclear factor-kappa B at 14 dpi, but not at 56 dpi. We also strongly detected a decrease of synaptic plasma membrane levels of N-methyl-D-asparte receptor 2B in CCI-mice treated with compound 30 at 56 dpi. Altogether, compound 30 reduced the chronic thermal hyperalgesia induced by CCI better than the natural compound EGCG. Thus, our findings provide a rationale for the preclinical development of compound 30 as an agent to treat neuropathic pain.
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Affiliation(s)
- Xavier Xifró
- Grupo de Investigación de Anatomía Clínica, Embriología, Neurociencia y Oncología Molecular (NEOMA), Departamento de Ciencias Médicas, Facultad de Medicina, Universitat de Girona (UdG), Girona, Spain
- Departament de Biologia Cel·lular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Laura Vidal-Sancho
- Grupo de Investigación de Anatomía Clínica, Embriología, Neurociencia y Oncología Molecular (NEOMA), Departamento de Ciencias Médicas, Facultad de Medicina, Universitat de Girona (UdG), Girona, Spain
- Departament de Biologia Cel·lular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Pere Boadas-Vaello
- Grupo de Investigación de Anatomía Clínica, Embriología, Neurociencia y Oncología Molecular (NEOMA), Departamento de Ciencias Médicas, Facultad de Medicina, Universitat de Girona (UdG), Girona, Spain
| | - Carlos Turrado
- Laboratorio de Química Médica, Departamento de Química Orgánica I, Facultad de Ciencias Químicas, Universidad Complutense de Madrid (UCM), Madrid, Spain
| | - Jordi Alberch
- Departament de Biologia Cel·lular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Madrid, Spain
| | - Teresa Puig
- Grupo de Investigación de Anatomía Clínica, Embriología, Neurociencia y Oncología Molecular (NEOMA), Departamento de Ciencias Médicas, Facultad de Medicina, Universitat de Girona (UdG), Girona, Spain
- * E-mail: (TP); (EV)
| | - Enrique Verdú
- Grupo de Investigación de Anatomía Clínica, Embriología, Neurociencia y Oncología Molecular (NEOMA), Departamento de Ciencias Médicas, Facultad de Medicina, Universitat de Girona (UdG), Girona, Spain
- * E-mail: (TP); (EV)
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In vivo screening of essential oils of Skimmia laureola leaves for antinociceptive and antipyretic activity. Asian Pac J Trop Biomed 2015; 3:202-6. [PMID: 23620838 DOI: 10.1016/s2221-1691(13)60050-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2012] [Accepted: 02/10/2013] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE To study the screening of essential oils of Skimmia laureola leaves (SLO) for acute toxicity, antinociceptive, antipyretic and anticonvulsant activities in various animal models. METHODS SLO were extracted using modified Clevenger type apparatus. Acute toxicity test was used in mice to observe its safety level. Antinociceptive activity of SLO was evaluated in acetic acid induced writhing and hot plate tests. Yeast induced hyperthermic mice and pentylenetetrazole induced convulsive mice were used for the assessment of its antipyretic and anticonvulsant profile respectively. RESULTS Substantial safety was observed for SLO in acute toxicity test. SLO showed a high significant activity in acetic acid induced writhing test in a dose dependent manner with maximum pain attenuation of 68.48% at 200 mg/kg i.p. However, it did not produce any relief in thermal induced pain at test doses. When challenged against pyrexia evoked by yeast, SLO manifested marked amelioration in hyperthermic mice, dose dependently. Maximum anti-hyperthermic activity (75%) was observed at 200 mg/kg i.p. after 4 h of drug administration. Nevertheless, SLO had no effect on seizures control and mortality caused by pentylenetetrazole. CONCLUSIONS In vivo studies of SLO showed prominent antinociceptive and antipyretic activities with ample safety profile and thus provided pharmacological base for the traditional uses of the plant in various painful conditions and pyrexia. Additional detail studies are required to ascertain its clinical application.
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Van Steenwinckel J, Auvynet C, Sapienza A, Reaux-Le Goazigo A, Combadière C, Melik Parsadaniantz S. Stromal cell-derived CCL2 drives neuropathic pain states through myeloid cell infiltration in injured nerve. Brain Behav Immun 2015; 45:198-210. [PMID: 25449579 DOI: 10.1016/j.bbi.2014.10.016] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 10/18/2014] [Accepted: 10/18/2014] [Indexed: 12/24/2022] Open
Abstract
Neuropathic pain resulting from peripheral nerve injury involves many persistent neuroinflammatory processes including inflammatory chemokines that control leukocyte trafficking and activate resident cells. Several studies have shown that CCL2 chemokine, a potent attractant of monocytes, and its cognate receptor, CCR2, play a critical role in regulating nociceptive processes during neuropathic pain. However, the role of CCL2 in peripheral leukocyte infiltration-associated neuropathic pain remains poorly understood. In particular, the contribution of individual CCL2-expressing cell populations (i.e. stromal and leukocytes) to immune cell recruitment into the injured nerve has not been established. Here, in preclinical model of peripheral neuropathic pain (i.e. chronic constriction injury of the sciatic nerve), we have demonstrated that, CCL2 content was increased specifically in nerve fibers. This upregulation of CCL2 correlated with local monocyte/macrophage infiltration and pain processing. Furthermore, sciatic intraneural microinjection of CCL2 in naïve animals triggered long-lasting pain behavior associated with local monocyte/macrophage recruitment. Using a specific CCR2 antagonist and mice with a CCL2 genetic deletion, we have also established that the CCL2/CCR2 axis drives monocyte/macrophage infiltration and pain hypersensitivity in the CCI model. Finally, specific deletion of CCL2 in stromal or immune cells respectively using irradiated bone marrow-chimeric CCI mice demonstrated that stromal cell-derived CCL2 (in contrast to CCL2 immune cell-derived) tightly controls monocyte/macrophage recruitment into the lesion and plays a major role in the development of neuropathic pain. These findings demonstrate that in chronic pain states, CCL2 expressed by sciatic nerve cells predominantly drove local neuro-immune interactions and pain-related behavior through CCR2 signaling.
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Affiliation(s)
- Juliette Van Steenwinckel
- UMR 1141 INSERM, Hôpital Robert Debré, F-75019, Paris, France; Université Paris Diderot, Faculté de Médecine, F-75019, Paris, France; PremUP, 75014 Paris, France
| | - Constance Auvynet
- Sorbonne Universités, UPMC Université Paris 06, CR7, Centre d'Immunologie et des Maladies Infectieuses (CIMI-Paris). 91 Bd de l'hôpital, F-75013, Paris, France; Inserm, U1135, CIMI-Paris, 91 Bd de l'hôpital, F-75013, Paris, France; CNRS, ERL 8255, CIMI-Paris, 91 Bd de l'hôpital, F-75013, Paris, France
| | - Anaïs Sapienza
- Sorbonne Universités, UPMC Université Paris 06, Institut de la vision, équipe S12, 17 rue Moreau, F-75012, Paris, France; UMR_S 968 INSERM, 17 rue Moreau, F-75012, Paris, France; UMR 7210 CNRS, 17 rue Moreau, F-75012, Paris, France
| | - Annabelle Reaux-Le Goazigo
- Sorbonne Universités, UPMC Université Paris 06, Institut de la vision, équipe S12, 17 rue Moreau, F-75012, Paris, France; UMR_S 968 INSERM, 17 rue Moreau, F-75012, Paris, France; UMR 7210 CNRS, 17 rue Moreau, F-75012, Paris, France
| | - Christophe Combadière
- Sorbonne Universités, UPMC Université Paris 06, CR7, Centre d'Immunologie et des Maladies Infectieuses (CIMI-Paris). 91 Bd de l'hôpital, F-75013, Paris, France; Inserm, U1135, CIMI-Paris, 91 Bd de l'hôpital, F-75013, Paris, France; CNRS, ERL 8255, CIMI-Paris, 91 Bd de l'hôpital, F-75013, Paris, France
| | - Stéphane Melik Parsadaniantz
- Sorbonne Universités, UPMC Université Paris 06, Institut de la vision, équipe S12, 17 rue Moreau, F-75012, Paris, France; UMR_S 968 INSERM, 17 rue Moreau, F-75012, Paris, France; UMR 7210 CNRS, 17 rue Moreau, F-75012, Paris, France.
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Kimura M, Sakai A, Sakamoto A, Suzuki H. Glial cell line-derived neurotrophic factor-mediated enhancement of noradrenergic descending inhibition in the locus coeruleus exerts prolonged analgesia in neuropathic pain. Br J Pharmacol 2015; 172:2469-78. [PMID: 25572945 DOI: 10.1111/bph.13073] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Revised: 10/10/2014] [Accepted: 12/25/2014] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND AND PURPOSE The locus coeruleus (LC) is the principal nucleus containing the noradrenergic neurons and is a major endogenous source of pain modulation in the brain. Glial cell line-derived neurotrophic factor (GDNF), a well-established neurotrophic factor for noradrenergic neurons, is a major pain modulator in the spinal cord and primary sensory neurons. However, it is unknown whether GDNF is involved in pain modulation in the LC. EXPERIMENTAL APPROACH Rats with chronic constriction injury (CCI) of the left sciatic nerve were used as a model of neuropathic pain. GDNF was injected into the left LC of rats with CCI for 3 consecutive days and changes in mechanical allodynia and thermal hyperalgesia were assessed. The α2 -adrenoceptor antagonist yohimbine was injected intrathecally to assess the involvement of descending inhibition in GDNF-mediated analgesia. The MEK inhibitor U0126 was used to investigate whether the ERK signalling pathway plays a role in the analgesic effects of GDNF. KEY RESULTS Both mechanical allodynia and thermal hyperalgesia were attenuated 24 h after the first GDNF injection. GDNF increased the noradrenaline content in the dorsal spinal cord. The analgesic effects continued for at least 3 days after the last injection. Yohimbine abolished these effects of GDNF. The analgesic effects of GDNF were partly, but significantly, inhibited by prior injection of U0126 into the LC. CONCLUSIONS AND IMPLICATIONS GDNF injection into the LC exerts prolonged analgesic effects on neuropathic pain in rats by enhancing descending noradrenergic inhibition.
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Affiliation(s)
- M Kimura
- Department of Anesthesiology, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
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mTOR kinase: a possible pharmacological target in the management of chronic pain. BIOMED RESEARCH INTERNATIONAL 2015; 2015:394257. [PMID: 25685786 PMCID: PMC4313067 DOI: 10.1155/2015/394257] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Accepted: 09/12/2014] [Indexed: 12/29/2022]
Abstract
Chronic pain represents a major public health problem worldwide. Current pharmacological treatments for chronic pain syndromes, including neuropathic pain, are only partially effective, with significant pain relief achieved in 40-60% of patients. Recent studies suggest that the mammalian target of rapamycin (mTOR) kinase and downstream effectors may be implicated in the development of chronic inflammatory, neuropathic, and cancer pain. The expression and activity of mTOR have been detected in peripheral and central regions involved in pain transmission. mTOR immunoreactivity was found in primary sensory axons, in dorsal root ganglia (DRG), and in dorsal horn neurons. This kinase is a master regulator of protein synthesis, and it is critically involved in the regulation of several neuronal functions, including the synaptic plasticity that is a major mechanism leading to the development of chronic pain. Enhanced activation of this pathway is present in different experimental models of chronic pain. Consistently, pharmacological inhibition of the kinase activity turned out to have significant antinociceptive effects in several experimental models of inflammatory and neuropathic pain. We will review the main evidence from animal and human studies supporting the hypothesis that mTOR may be a novel pharmacological target for the management of chronic pain.
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Rauf A, Uddin G, Siddiqui BS, Muhammad N, Khan H. Antipyretic and antinociceptive activity of Diospyros lotus L. in animals. Asian Pac J Trop Biomed 2014; 4:S382-6. [PMID: 25183115 DOI: 10.12980/apjtb.4.2014c1020] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Accepted: 03/15/2014] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVE To evaluate pharmacologically the traditional use of Diospyros lotus as antipyretic and antinociceptive in various animal models. METHODS In vivo experimental models were used in this study. Antipyretic activity of extract/fractions was evaluated in brewer's yeast induced hyperthermic mice while antinociceptive activity was studied in acetic acid induced writhing test at 50 and 100 mg/kg i.p. RESULTS The crude extract strongly ameliorated the induced pyrexia during various assessment times. Upon fractionation, the antipyretic effects were strongly augmented by the chloroform and ethyl acetate fractions of the plant. However, hexane and butanol fractions were insignificant in their effect as antipyretic. The extract showed marked inhibition on the noxious simulation induced by post acetic acid injection. The effect was strongly supported by other fraction expect hexane. CONCLUSIONS In short, our study scientifically validated the traditional use of the plant as antipyretic.
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Affiliation(s)
- Abdur Rauf
- Institute of Chemical Sciences, University of Peshawar, Peshawar-25120, KPK, Pakistan
| | - Ghias Uddin
- Institute of Chemical Sciences, University of Peshawar, Peshawar-25120, KPK, Pakistan
| | - Bina S Siddiqui
- H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan
| | - Naveed Muhammad
- Department of Pharmacy, Hazara University, Havelian Campus, Abbottabbad-22500, Pakistan
| | - Haroon Khan
- Gandhara College of Pharmacy, Gandhara University, Peshawar-25120, KPK, Pakistan
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Rosa F, Trevisan G, Rigo FK, Tonello R, Andrade EL, do Nascimento Cordeiro M, Calixto JB, Gomez MV, Ferreira J. Phα1β, a peptide from the venom of the spider Phoneutria nigriventer shows antinociceptive effects after continuous infusion in a neuropathic pain model in rats. Anesth Analg 2014; 119:196-202. [PMID: 24836473 DOI: 10.1213/ane.0000000000000249] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Neuropathic pain is a severe painful pathology that is difficult to treat. One option for its management is the continuous intrathecal (i.t.) infusion of ziconotide (the Conus magnus peptide ω-conotoxin MVIIA), which, in addition to being effective, produces serious adverse effects at analgesic doses. Single i.t. administration of Phα1β, a peptide purified from the venom of the spider Phoneutria nigriventer, has antinociceptive effects with a greater therapeutic window than ziconotide in rodents. To further evaluate its analgesic potential, we investigated the antinociceptive and toxic effects of Phα1β after single or continuous i.t. infusion in a rat model of neuropathic pain. METHODS Adult male Wistar rats (200-300 g) bred in-house were used. Chronic constriction injury (CCI) of the sciatic nerve was used as the neuropathic pain model. Nociception was assessed by detecting mechanical hyperalgesia, considering a significant reduction in 50% paw withdrawal threshold values after CCI compared with baseline values. First, we assessed the antinociceptive effect of a single i.t. injection of Phα1β (10, 30, or 100 pmol/site) in a model of neuropathic pain 8 days after nerve injury. In a different experiment, we delivered Phα1β (60 pmol/μL/h) or vehicle (phosphate-buffered saline, 1.0 μL/h) through continuous infusion using an osmotic pump by spinal catheterization for 7 days in rats submitted to nerve injury. Behavioral adverse effects were evaluated after single or continuous Phα1β i.t. administration, and histopathological analysis of spinal cord, brainstem, and encephalon was performed after continuous Phα1β i.t. injection. RESULTS We observed that CCI of the sciatic nerve but not sham surgery caused intense (reduction of approximately 2.5 times in mechanical withdrawal threshold) and persistent (up to 14 days) nociception in rats. The single i.t. injection of Phα1β (30 or 100 pmol/site) reduced neuropathic nociception from 1 to 6 hours after administration, without showing detectable side effects. Similarly, the continuous infusion of Phα1β (60 pmol/μL/h for 7 days) was also able to reverse nerve injury-induced nociception from 1 to 7 days, but did not cause either behavioral side effects or histopathological changes in the central nervous system. CONCLUSIONS Thus, we have shown for the first time that the continuous i.t. delivery of Phα1β produces analgesia disconnected from toxicity in a relevant model of neuropathic pain, indicating that it is an effective and safe drug with a great potential to treat pain.
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Affiliation(s)
- Fernanda Rosa
- From the Graduate Program in Biological Sciences: Toxicological Biochemistry, Department of Chemistry, Center of Natural and Exact Sciences, Federal University of Santa Maria (UFSM), Santa Maria (RS); Laboratory of Molecular and Cellular Biology, Graduate Program of Health Sciences, Department of Health Sciences, University of Southern Santa Catarina (UNESC), Criciúma, SC, Brazil; Graduate Program in Health Sciences: Medicine and Biomedicine, Institute of Education and Research, Santa Casa de Belo Horizonte, Grupo Santa Casa de Belo Horizonte, Belo Horizonte (MG), Brazil; Department of Pharmacology, Biological Sciences Centre, Federal University of Santa Catarina, Florianópolis, Santa Catarina; and Ezequiel Dias Foundation, Belo Horizonte (MG), Brazil
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Tao W, Chen Q, Zhou W, Wang Y, Wang L, Zhang Z. Persistent inflammation-induced up-regulation of brain-derived neurotrophic factor (BDNF) promotes synaptic delivery of α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor GluA1 subunits in descending pain modulatory circuits. J Biol Chem 2014; 289:22196-204. [PMID: 24966334 PMCID: PMC4139232 DOI: 10.1074/jbc.m114.580381] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 06/16/2014] [Indexed: 11/06/2022] Open
Abstract
The enhanced AMPA receptor phosphorylation at GluA1 serine 831 sites in the central pain-modulating system plays a pivotal role in descending pain facilitation after inflammation, but the underlying mechanisms remain unclear. We show here that, in the rat brain stem, in the nucleus raphe magnus, which is a critical relay in the descending pain-modulating system of the brain, persistent inflammatory pain induced by complete Freund adjuvant (CFA) can enhance AMPA receptor-mediated excitatory postsynaptic currents and the GluA2-lacking AMPA receptor-mediated rectification index. Western blot analysis showed an increase in GluA1 phosphorylation at Ser-831 but not at Ser-845. This was accompanied by an increase in distribution of the synaptic GluA1 subunit. In parallel, the level of histone H3 acetylation at bdnf gene promoter regions was reduced significantly 3 days after CFA injection, as indicated by ChIP assays. This was correlated with an increase in BDNF mRNA levels and BDNF protein levels. Sequestering endogenous extracellular BDNF with TrkB-IgG in the nucleus raphe magnus decreased AMPA receptor-mediated synaptic transmission and GluA1 phosphorylation at Ser-831 3 days after CFA injection. Under the same conditions, blockade of TrkB receptor functions, phospholipase C, or PKC impaired GluA1 phosphorylation at Ser-831 and decreased excitatory postsynaptic currents mediated by GluA2-lacking AMPA receptors. Taken together, these results suggest that epigenetic up-regulation of BDNF by peripheral inflammation induces GluR1 phosphorylation at Ser-831 sites through activation of the phospholipase C-PKC signaling cascade, leading to the trafficking of GluA1 to pain-modulating neuronal synapses.
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Affiliation(s)
- Wenjuan Tao
- From the Key Laboratory of Brain Functions and Diseases, School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, China and the Department of Pharmacy, Anhui College of Traditional Chinese Medicine, Wuhu, Anhui 241000, China
| | - Quan Chen
- From the Key Laboratory of Brain Functions and Diseases, School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, China and
| | - Wenjie Zhou
- From the Key Laboratory of Brain Functions and Diseases, School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, China and
| | - Yunping Wang
- From the Key Laboratory of Brain Functions and Diseases, School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, China and
| | - Lu Wang
- From the Key Laboratory of Brain Functions and Diseases, School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, China and
| | - Zhi Zhang
- From the Key Laboratory of Brain Functions and Diseases, School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, China and
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Holden JE, Wang E, Moes JR, Wagner M, Maduko A, Jeong Y. Differences in carbachol dose, pain condition, and sex following lateral hypothalamic stimulation. Neuroscience 2014; 270:226-35. [PMID: 24759771 PMCID: PMC6025747 DOI: 10.1016/j.neuroscience.2014.04.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 04/09/2014] [Accepted: 04/09/2014] [Indexed: 01/21/2023]
Abstract
Lateral hypothalamic (LH) stimulation produces antinociception in female rats in acute, nociceptive pain. Whether this effect occurs in neuropathic pain or whether male-female sex differences exist is unknown. We examined the effect of LH stimulation in male and female rats using conditions of nociceptive and neuropathic pain. Neuropathic groups received chronic constriction injury (CCI) to induce thermal hyperalgesia, a sign of neuropathic pain. Nociceptive rats were naive for CCI, but received the same thermal stimulus following LH stimulation. To demonstrate that CCI ligation produced thermal hyperalgesia, males and females received either ligation or sham surgery for control. Both males and females demonstrated significant thermal hyperalgesia following CCI ligation (p<0.05), but male sham surgery rats also showed a significant left-right difference not present in female sham rats. In the second experiment, rats randomly assigned to CCI or nociceptive groups were given one of three doses of the cholinergic agonist carbachol (125, 250, or 500 nmol) or normal saline for control, microinjected into the left LH. Paw withdrawal from a thermal stimulus (paw withdrawal latency; PWL) was measured every 5 min for 45 min. Linear mixed models analysis showed that males and females in both pain conditions demonstrated significant antinociception, with the 500-nmol dose producing the greatest effect across groups compared with controls for the left paw (p<0.05). Female CCI rats showed equivalent responses to the three doses, while male CCI rats showed more variability for dose. However, nociceptive females responded only to the 500-nmol dose, while nociceptive males responded to all doses (p<0.05). For right PWL, only nociceptive males showed a significant carbachol dose response. These findings are suggestive that LH stimulation produces antinociception in male and female rats in both nociceptive and neuropathic pain, but dose response differences exist based on sex and pain condition.
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Affiliation(s)
- J E Holden
- The University of Michigan School of Nursing, 400 N. Ingalls Building, Ann Arbor, MI 48109-5482, United States; College of Nursing Science, Kyung Hee University, 26 Kyunghee-daero, Dongdaemun-gu, Seoul 130-701, Republic of Korea.
| | - E Wang
- University of Illinois at Chicago, College of Applied Health Sciences, 1919 W. Taylor Street, Chicago, IL 60612, United States.
| | - J R Moes
- Calvin College Nursing Department, Science Building Room 245, 1734 Knollcrest Circle SE, Grand Rapids, MI, United States.
| | - M Wagner
- The University of Michigan School of Nursing, 400 N. Ingalls Building, Ann Arbor, MI 48109-5482, United States.
| | - A Maduko
- The University of Michigan School of Nursing, 400 N. Ingalls Building, Ann Arbor, MI 48109-5482, United States.
| | - Y Jeong
- College of Nursing Science, Kyung Hee University, 26 Kyunghee-daero, Dongdaemun-gu, Seoul 130-701, Republic of Korea.
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Demeule M, Beaudet N, Régina A, Besserer-Offroy É, Murza A, Tétreault P, Belleville K, Ché C, Larocque A, Thiot C, Béliveau R, Longpré JM, Marsault É, Leduc R, Lachowicz JE, Gonias SL, Castaigne JP, Sarret P. Conjugation of a brain-penetrant peptide with neurotensin provides antinociceptive properties. J Clin Invest 2014; 124:1199-213. [PMID: 24531547 DOI: 10.1172/jci70647] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Accepted: 12/05/2013] [Indexed: 12/23/2022] Open
Abstract
Neurotensin (NT) has emerged as an important modulator of nociceptive transmission and exerts its biological effects through interactions with 2 distinct GPCRs, NTS1 and NTS2. NT provides strong analgesia when administered directly into the brain; however, the blood-brain barrier (BBB) is a major obstacle for effective delivery of potential analgesics to the brain. To overcome this challenge, we synthesized chemical conjugates that are transported across the BBB via receptor-mediated transcytosis using the brain-penetrant peptide Angiopep-2 (An2), which targets LDL receptor-related protein-1 (LRP1). Using in situ brain perfusion in mice, we found that the compound ANG2002, a conjugate of An2 and NT, was transported at least 10 times more efficiently across the BBB than native NT. In vitro, ANG2002 bound NTS1 and NTS2 receptors and maintained NT-associated biological activity. In rats, i.v. ANG2002 induced a dose-dependent analgesia in the formalin model of persistent pain. At a dose of 0.05 mg/kg, ANG2002 effectively reversed pain behaviors induced by the development of neuropathic and bone cancer pain in animal models. The analgesic properties of ANG2002 demonstrated in this study suggest that this compound is effective for clinical management of persistent and chronic pain and establish the benefits of this technology for the development of neurotherapeutics.
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Gherardini L, Bardi G, Gennaro M, Pizzorusso T. Novel siRNA delivery strategy: a new "strand" in CNS translational medicine? Cell Mol Life Sci 2014; 71:1-20. [PMID: 23508806 PMCID: PMC11113879 DOI: 10.1007/s00018-013-1310-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Revised: 02/18/2013] [Accepted: 02/19/2013] [Indexed: 12/12/2022]
Abstract
RNA interference has been envisaged as a powerful tool for molecular and clinical investigation with a great potential for clinical applications. In recent years, increased understanding of cancer biology and stem cell biology has dramatically accelerated the development of technology for cell and gene therapy in these areas. This paper is a review of the most recent report of innovative use of siRNA to benefit several central nervous system diseases. Furthermore, a description is made of innovative strategies of delivery into the brain by means of viral and non-viral vectors with high potential for translation into clinical use. Problems are also highlighted that might hamper the transition from bench to bed, analyzing the lack of reliable preclinical models with predictive validity and the lack of effective delivery systems, which are able to overcome biological barriers and specifically reach the brain site of action.
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Affiliation(s)
| | - Giuseppe Bardi
- Center for MicroBioRobotics @SSSA, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, 56025 Pontedera, Italy
| | | | - Tommaso Pizzorusso
- Institute of Neuroscience, CNR, Via Moruzzi, 1 56124 Pisa, Italy
- Department of Neuroscience, Psychology, Drug Research and Child Health NEUROFARBA, University of Florence, Florence, Italy
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Tétreault P, Beaudet N, Perron A, Belleville K, René A, Cavelier F, Martinez J, Stroh T, Jacobi AM, Rose SD, Behlke MA, Sarret P. Spinal NTS2 receptor activation reverses signs of neuropathic pain. FASEB J 2013; 27:3741-52. [DOI: 10.1096/fj.12-225540] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Pascal Tétreault
- Department of Physiology and BiophysicsFaculty of Medicine and Health SciencesUniversité de SherbrookeSherbrookeQuébecCanada
| | - Nicolas Beaudet
- Department of Physiology and BiophysicsFaculty of Medicine and Health SciencesUniversité de SherbrookeSherbrookeQuébecCanada
| | - Amélie Perron
- Institute for Integrated Cell‐Material SciencesKyoto UniversityKyotoJapan
| | - Karine Belleville
- Department of Physiology and BiophysicsFaculty of Medicine and Health SciencesUniversité de SherbrookeSherbrookeQuébecCanada
| | - Adeline René
- Institut des Biomolécules Max MousseronUnité Mixte de Recherche‐Centre National de la Recherche Scientifique (UMR‐CNRS)‐5247Universités Montpellier I and IIMontpellierFrance
| | - Florine Cavelier
- Institut des Biomolécules Max MousseronUnité Mixte de Recherche‐Centre National de la Recherche Scientifique (UMR‐CNRS)‐5247Universités Montpellier I and IIMontpellierFrance
| | - Jean Martinez
- Institut des Biomolécules Max MousseronUnité Mixte de Recherche‐Centre National de la Recherche Scientifique (UMR‐CNRS)‐5247Universités Montpellier I and IIMontpellierFrance
| | - Thomas Stroh
- Department of Neurology and NeurosurgeryMontreal Neurological InstituteMcGill UniversityMontréalQuébecCanada
| | | | | | | | - Philippe Sarret
- Department of Physiology and BiophysicsFaculty of Medicine and Health SciencesUniversité de SherbrookeSherbrookeQuébecCanada
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Smith MT, Muralidharan A. Pharmacogenetics of pain and analgesia. Clin Genet 2012; 82:321-30. [PMID: 22779698 DOI: 10.1111/j.1399-0004.2012.01936.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Revised: 07/08/2012] [Accepted: 07/08/2012] [Indexed: 12/19/2022]
Abstract
Pain severity ratings and the analgesic dosing requirements of patients with apparently similar pain conditions may differ considerably between individuals. Contributing factors include those of genetic and environmental origin with epigenetic mechanisms that enable dynamic gene-environment interaction, more recently implicated in pain modulation. Insight into genetic factors underpinning inter-patient variability in pain sensitivity has come from rodent heritability studies as well as familial aggregation and twin studies in humans. Indeed, more than 350 candidate pain genes have been identified as potentially contributing to heritable differences in pain sensitivity. A large number of genetic association studies conducted in patients with a variety of clinical pain types or in humans exposed to experimentally induced pain stimuli in the laboratory setting, have examined the impact of single-nucleotide polymorphisms in various target genes on pain sensitivity and/or analgesic dosing requirements. However, the findings of such studies have generally failed to replicate or have been only partially replicated by independent investigators. Deficiencies in study conduct including use of small sample size, inappropriate statistical methods and inadequate attention to the possibility that between-study differences in environmental factors may alter pain phenotypes through epigenetic mechanisms, have been identified as being significant.
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Affiliation(s)
- M T Smith
- Centre for Integrated Preclinical Drug Development, The University of Queensland, Brisbane, Queensland, Australia.
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