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Shi X, Ye C, Qin X, Zhou L, Xia C, Cai T, Xie Y, Yin Z, Hu G. Novel Pituitary Actions of TAC4 Gene Products in Teleost. Int J Mol Sci 2021; 22:ijms222312893. [PMID: 34884698 PMCID: PMC8657723 DOI: 10.3390/ijms222312893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/24/2021] [Accepted: 11/24/2021] [Indexed: 11/16/2022] Open
Abstract
Tachykinin 4 (TAC4) is the latest member of the tachykinin family involved in several physiological functions in mammals. However, little information is available about TAC4 in teleost. In the present study, we firstly isolated TAC4 and six neurokinin receptors (NKRs) from grass carp brain and pituitary. Sequence analysis showed that grass carp TAC4 could encode two mature peptides (namely hemokinin 1 (HK1) and hemokinin 2 (HK2)), in which HK2 retained the typical FXGLM motif in C-terminal of tachyinin, while HK1 contained a mutant VFGLM motif. The ligand-receptor selectivity showed that HK2 could activate all 6 NKRs but with the highest activity for the neurokinin receptor 2 (NK2R). Interestingly, HK1 displayed a very weak activation for each NKR isoform. In grass carp pituitary cells, HK2 could induce prolactin (PRL), somatolactin α (SLα), urotensin 1 (UTS1), neuromedin-B 1 (NMB1), cocaine- and amphetamine-regulated transcript 2 (CART2) mRNA expression mediated by NK2R and neurokinin receptor 3 (NK3R) via activation cyclic adenosine monophosphate (cAMP)/protein kinase A (PKA), phospholipase C (PLC)/inositol 1,4,5-triphosphate (IP3)/protein kinase C (PKC) and calcium2+ (Ca2+)/calmodulin (CaM)/calmodulin kinase-II (CaMK II) cascades. However, the corresponding stimulatory effects triggered by HK1 were found to be notably weaker. Furthermore, based on the structural base for HK1, our data suggested that a phenylalanine (F) to valine (V) substitution in the signature motif of HK1 might have contributed to its weak agonistic actions on NKRs and pituitary genes regulation.
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Affiliation(s)
- Xuetao Shi
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (X.S.); (C.Y.); (X.Q.); (L.Z.); (C.X.); (T.C.); (Y.X.)
| | - Cheng Ye
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (X.S.); (C.Y.); (X.Q.); (L.Z.); (C.X.); (T.C.); (Y.X.)
| | - Xiangfeng Qin
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (X.S.); (C.Y.); (X.Q.); (L.Z.); (C.X.); (T.C.); (Y.X.)
| | - Lingling Zhou
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (X.S.); (C.Y.); (X.Q.); (L.Z.); (C.X.); (T.C.); (Y.X.)
| | - Chuanhui Xia
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (X.S.); (C.Y.); (X.Q.); (L.Z.); (C.X.); (T.C.); (Y.X.)
| | - Tianyi Cai
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (X.S.); (C.Y.); (X.Q.); (L.Z.); (C.X.); (T.C.); (Y.X.)
| | - Yunyi Xie
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (X.S.); (C.Y.); (X.Q.); (L.Z.); (C.X.); (T.C.); (Y.X.)
| | - Zhan Yin
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- Correspondence: (Z.Y.); (G.H.)
| | - Guangfu Hu
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China; (X.S.); (C.Y.); (X.Q.); (L.Z.); (C.X.); (T.C.); (Y.X.)
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
- Correspondence: (Z.Y.); (G.H.)
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Hunyady Á, Hajna Z, Gubányi T, Scheich B, Kemény Á, Gaszner B, Borbély É, Helyes Z. Hemokinin-1 is an important mediator of pain in mouse models of neuropathic and inflammatory mechanisms. Brain Res Bull 2019; 147:165-173. [PMID: 30664920 DOI: 10.1016/j.brainresbull.2019.01.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 01/11/2019] [Accepted: 01/14/2019] [Indexed: 01/15/2023]
Abstract
The Tac4 gene-derived hemokinin-1 (HK-1) is present in pain-related regions and activates the tachykinin NK1 receptor, but with binding site and signaling pathways different from Substance P (SP). NK1 receptor is involved in nociception, but our earlier data showed that it has no role in chronic neuropathic hyperalgesia, similarly to SP. Furthermore, NK1 antagonists failed in clinical trials as analgesics due to still unknown reasons. Therefore, we investigated the role of HK-1 in pain conditions of distinct mechanisms using genetically modified mice. Chronic neuropathic mechanical and cold hyperalgesia after partial sciatic nerve ligation (PSL) were determined by dynamic plantar aesthesiometry and withdrawal latency from icy water, motor coordination on the accelerating Rotarod. Peripheral nerve growth factor (NGF) production was measured by ELISA, neuronal and glia cell activation by immunohistochemistry in pain-related regions. Acute somatic and visceral chemonocifensive behaviors were assessed after intraplantar formalin or intraperitoneal acetic-acid injection, respectively. Resiniferatoxin-induced inflammatory mechanical and thermal hyperalgesia by aesthesiometry and increasing temperature hot plate. Chronic neuropathic mechanical and cold hypersensitivity were significantly decreased in HK-1 deficient mice. NGF level in the paw homogenates of intact mice were significantly lower in case of HK-1 deletion. However, it significantly increased under neuropathic condition in contrast to wildtype mice, where the higher basal concentration did not show any changes. Microglia, but not astrocyte activation was observed 14 days after PSL in the ipsilateral spinal dorsal horn of wildtype, but not HK-1-deficient mice. However, under neuropathic conditions, the number of GFAP-positive astrocytes was significantly smaller in case of HK-1 deletion. Acute visceral, but not somatic nocifensive behavior, as well as neurogenic inflammatory mechanical and thermal hypersensitivity were significantly reduced by HK-1 deficiency similarly to NK1, but not to SP deletion. We provide evidence for pro-nociceptive role of HK-1, via NK1 receptor activation in acute inflammation models, but differently from SP-mediated actions. Identification of its targets and signaling can open new directions in pain research.
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Affiliation(s)
- Ágnes Hunyady
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Hungary; János Szentágothai Research Centre, Centre for Neuroscience, University of Pécs, Hungary
| | - Zsófia Hajna
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Hungary; János Szentágothai Research Centre, Centre for Neuroscience, University of Pécs, Hungary
| | - Tímea Gubányi
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Hungary; János Szentágothai Research Centre, Centre for Neuroscience, University of Pécs, Hungary
| | - Bálint Scheich
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Hungary; János Szentágothai Research Centre, Centre for Neuroscience, University of Pécs, Hungary
| | - Ágnes Kemény
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Hungary; János Szentágothai Research Centre, Centre for Neuroscience, University of Pécs, Hungary; Department of Medical Biology, Medical School, University of Pécs, Hungary
| | - Balázs Gaszner
- Department of Anatomy, Medical School, University of Pécs, Hungary
| | - Éva Borbély
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Hungary; János Szentágothai Research Centre, Centre for Neuroscience, University of Pécs, Hungary
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Hungary; János Szentágothai Research Centre, Centre for Neuroscience, University of Pécs, Hungary.
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Borbély É, Helyes Z. Role of hemokinin-1 in health and disease. Neuropeptides 2017; 64:9-17. [PMID: 27993375 DOI: 10.1016/j.npep.2016.12.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 12/10/2016] [Accepted: 12/12/2016] [Indexed: 01/16/2023]
Abstract
Hemokinin-1 (HK-1), the newest tachykinin encoded by the Tac4 gene was discovered in 2000. Its name differs from that of the other members of this peptide family due to its first demonstration in B lymphocytes. Since tachykinins are classically found in the nervous system, the significant expression of HK-1 in blood cells is a unique feature of this peptide. Due to its widespread distribution in the whole body, HK-1 is involved in different physiological and pathophysiological functions involving pain inflammation modulation, immune regulation, respiratory and endocrine functions, as well as tumor genesis. Furthermore, despite the great structural and immunological similarities to substance P (SP), the functions of HK-1 are often different or the opposite. They both have the highest affinity to the tachykinin NK1 receptor, but HK-1 is likely to have a distinct binding site and signalling pathways. Moreover, several actions of HK-1 different from SP have been suggested to be mediated via a presently not identified own receptor/target molecule. Therefore, it is very important to explore its effects at different levels and compare its characteristics with SP to get a deeper insight in the different cellular mechanisms. Since HK-1 has recently been in the focus of intensive research, in the present review we summarize the few clinical data and experimental results regarding HK-1 expression and function in different model systems obtained throughout the 16years of its history. Synthesizing these findings help to understand the complexity of HK-1 actions and determine its biomarker values and/or drug development potentials.
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Affiliation(s)
- Éva Borbély
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Hungary; Molecular Pharmacology Research Group, János Szentágothai Research Centre, Centre for Neuroscience, University of Pécs, Hungary.
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, Hungary; Molecular Pharmacology Research Group, János Szentágothai Research Centre, Centre for Neuroscience, University of Pécs, Hungary; MTA-PTE NAP B Chronic Pain Research Group, Hungary
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Funahashi H, Naono-Nakayama R, Ebihara K, Koganemaru G, Kuramashi A, Ikeda T, Nishimori T, Ishida Y. Hemokinin-1 mediates pruriceptive processing in the rat spinal cord. Neuroscience 2014; 277:206-16. [DOI: 10.1016/j.neuroscience.2014.07.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2014] [Revised: 06/28/2014] [Accepted: 07/01/2014] [Indexed: 11/16/2022]
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Naono-Nakayama R, Ikeda T, Matsushima O, Sameshima H, Takamiya K, Funahashi H, Nishimori T. An amino-terminal fragment of hemokinin-1 has an inhibitory effect on pruritic processing in rats. Neuroscience 2014; 259:172-83. [DOI: 10.1016/j.neuroscience.2013.10.070] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 10/11/2013] [Accepted: 10/28/2013] [Indexed: 12/01/2022]
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New tachykinin peptides and nociception. JAPANESE DENTAL SCIENCE REVIEW 2013. [DOI: 10.1016/j.jdsr.2012.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Jin Q, Lu L, Yang Y, Dong S. Effects of endokinin A/B, endokinin C/D, and endomorphin-1 on the regulation of mean arterial blood pressure in rats. Peptides 2011; 32:2428-35. [PMID: 22037058 DOI: 10.1016/j.peptides.2011.10.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Revised: 10/16/2011] [Accepted: 10/16/2011] [Indexed: 11/18/2022]
Abstract
Endokinins are four novel human tachykinins, including endokinins A (EKA), B (EKB), C (EKC), and D (EKD). Endokinin A/B (EKA/B) is the common C-terminal decapeptide in EKA and EKB, while endokinin C/D (EKC/D) is the common C-terminal duodecapeptide in EKC and EKD. In this study, we attempted to investigate the interactions between EKA/B, EKC/D, and endomorphin-1 (EM-1) on the depressor effect at peripheral level. The effects of EKA/B produced a U-shaped curve. The maximal effect was caused by 10 nmol/kg. EKC/D and EM-1 showed a dose-dependent relationship. Co-administration of EKA/B (0.1, 1, 10 nmol/kg) with EM-1 produced effects similar to those of EKA/B alone but slightly lower. Co-injection of EKA/B (100 nmol/kg) with EM-1 caused an effect stronger than any separate injection. Co-administration of EKC/D (10 nmol/kg) with EM-1 (30 nmol/kg) caused a depressor effect, which was one of the tradeoffs of EM-1 and EKC/D. Mechanism studies showed that SR140333B could block the depressor effects of EKA/B, EKC/D, EM-1, EKA/B+EM-1, and EKC/D+EM-1; SR48968C could block EM-1, EKA/B, EKC/D, and EKC/D+EM-1 and partially block EKA/B+EM-1; SR142801 could block EM-1, EKC/D, and EKC/D+EM-1 and partially block EKA/B and EKA/B+EM-1; naloxone could block EM-1, EKC/D, and EKC/D+EM-1 and partially block EKA/B and EKA/B+EM-1. Pretreatment with NG-nitro-l-arginine methyl ester partially decreased depressor intensity and half-recovery time of EKA/B and EKC/D.
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Affiliation(s)
- Qiaoying Jin
- Institute of Biochemistry and Molecular Biology, School of Life Sciences
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Naono-Nakayama R, Sunakawa N, Ikeda T, Matsushima O, Nishimori T. Pharmacological characteristics of endokinin C/D-derived peptides in nociceptive and inflammatory processing in rats. Peptides 2011; 32:2407-17. [PMID: 22074956 DOI: 10.1016/j.peptides.2011.10.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2011] [Revised: 10/04/2011] [Accepted: 10/05/2011] [Indexed: 10/16/2022]
Abstract
Endokinins designated from the human TAC4 gene consist of endokinin A, endokinin B, endokinin C (EKC) and endokinin D (EKD). EKC/D is a peptide using the common carboxyl-terminal in EKC and EKD and consists of 12 amino acids, and exerts antagonistic effects on the induction of scratching behavior by substance P (SP). Some of SP-preferring receptor antagonists have several d-tryptophan (d-Trp); however, the pharmacological effect of EKC/D-derived peptides with d-Trp remains to be solved. Therefore, to clarify the pharmacological characteristics of EKC/D-derived peptides, effects of pretreatment with these peptides on SP-induced scratching and thermal hyperalgesia, formalin-induced flinching and carrageenan-induced inflammation were evaluated. Intrathecal administration of [d-Trp(8)]-EKC/D and [d-Trp(10)]-EKC/D showed a markedly long inhibitory effect, at least 14 h, whereas the antagonistic effects of [d-Trp(8,10)]-EKC/D and EKC/D without d-Trp disappeared after 1h. Furthermore, the inhibitory effect of [d-Trp(10)]-EKC/D-derived peptides was dependent on the number of amino acids from the amino-terminus, and the more numerous the amino acids, the more marked the antagonistic effect. Thus, these results indicate that the effective duration of EKC/D-derived peptides is dependent on the number of d-Trp in the carboxyl-terminal region and the amino-terminal region regulates the antagonistic effect of EKC/D.
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Affiliation(s)
- Rumi Naono-Nakayama
- Division of Neurobiology, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1692, Japan.
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Naono-Nakayama R, Sunakawa N, Ikeda T, Nishimori T. Knockdown of the tachykinin neurokinin 1 receptor by intrathecal administration of small interfering RNA in rats. Eur J Pharmacol 2011; 670:448-57. [PMID: 21958872 DOI: 10.1016/j.ejphar.2011.09.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2011] [Revised: 09/02/2011] [Accepted: 09/13/2011] [Indexed: 10/17/2022]
Abstract
The contribution of tachykinin neurokinin 1 (NK₁) receptor to nociceptive processing in the dorsal horn has been evaluated by tachykinin NK₁ receptor antagonism and knockout or knockdown of tachykinin NK₁ receptor; however, these results have not always been consistent. Therefore, to reevaluate the role of tachykinin NK₁ receptor in the dorsal horn, a solution of hemagglutinating virus of the Japan envelope (HVJ-E) with small interfering RNA (siRNA) against tachykinin NK₁ receptor was administered intrathecally and then the effect of treatment on tachykinin NK₁ receptor immunohistochemistry and on the induction of inflammation, thermal hyperalgesia and scratching behavior was evaluated. This treatment resulted in marked reduction of tachykinin NK₁ receptor immunoreactivity through the spinal dorsal horn, and the induction of thermal hyperalgesia and scratching behavior by substance P was significantly attenuated in rats with tachykinin NK₁ receptor siRNA. In addition, only one intrathecal injection of tachykinin NK₁ receptor siRNA reduced carrageenan-induced inflammation and thermal hyperalgesia significantly and markedly attenuated the induction of flinching after formalin injection and c-Fos expression in the dorsal horn following formalin injection. The efficient down-regulation of tachykinin NK₁ receptor by intrathecal administration tachykinin NK₁ receptor siRNA suggests that this method may be a valuable tool for examining the function of genes expressed in the dorsal horn.
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Affiliation(s)
- Rumi Naono-Nakayama
- Division of Neurobiology, Faculty of Medicine, University of Miyazaki, Kiyotake, Miyazaki 889-1692, Japan.
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Castillo C, Norcini M, Baquero-Buitrago J, Levacic D, Medina R, Montoya-Gacharna JV, Blanck TJJ, Dubois M, Recio-Pinto E. The N-methyl-D-aspartate-evoked cytoplasmic calcium increase in adult rat dorsal root ganglion neuronal somata was potentiated by substance P pretreatment in a protein kinase C-dependent manner. Neuroscience 2011; 177:308-20. [PMID: 21215796 DOI: 10.1016/j.neuroscience.2010.12.040] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2010] [Revised: 12/16/2010] [Accepted: 12/21/2010] [Indexed: 12/27/2022]
Abstract
The involvement of substance P (SP) in neuronal sensitization through the activation of the neurokinin-1-receptor (NK1r) in postsynaptic dorsal horn neurons has been well established. In contrast, the role of SP and NK1r in primary sensory dorsal root ganglion (DRG) neurons, in particular in the soma, is not well understood. In this study, we evaluated whether SP modulated the NMDA-evoked transient increase in cytoplasmic Ca2+ ([Ca2+]cyt) in the soma of dissociated adult DRG neurons. Cultures were treated with nerve growth factor (NGF), prostaglandin E2 (PGE2) or both NGF+PGE2. Treatment with NGF+PGE2 increased the percentage of N-methyl-D-aspartate (NMDA) responsive neurons. There was no correlation between the percentage of NMDA responsive neurons and the level of expression of the NR1 and NR2B subunits of the NMDA receptor or of the NK1r. Pretreatment with SP did not alter the percentage of NMDA responsive neurons; while it potentiated the NMDA-evoked [Ca2+]cyt transient by increasing its magnitude and by prolonging the period during which small- and some medium-sized neurons remained NMDA responsive. The SP-mediated potentiation was blocked by the SP-antagonist ([D-Pro4, D-Trp7,9]-SP (4-11)) and by the protein kinase C (PKC) blocker bisindolylmaleimide I (BIM); and correlated with the phosphorylation of PKCε. The Nk1r agonist [Sar9, Met(O2)11]-SP (SarMet-SP) also potentiated the NMDA-evoked [Ca2+]cyt transient. Exposure to SP or SarMet-SP produced a rapid increase in the labeling of phosphorylated-PKCε. In none of the conditions we detected phosphorylation of the NR2B subunit at Ser-1303. Phosphorylation of the NR2B subunit at Tyr1472 was enhanced to a similar extent in cells exposed to NMDA, SP or NMDA+SP, and that enhancement was blocked by BIM. Our findings suggest that NGF and PGE2 may contribute to the injury-evoked sensitization of DRG neurons in part by enhancing their NMDA-evoked [Ca2+]cyt transient in all sized DRG neurons; and that SP may further contribute to the DRG sensitization by enhancing and prolonging the NMDA-evoked increase in [Ca2+]cyt in small- and medium-sized DRG neurons.
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Affiliation(s)
- C Castillo
- Department of Anesthesiology, New York University (NYU) Langone Medical Center, NY 10016, USA
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Grassin-Delyle S, Naline E, Buenestado A, Risse PA, Sage E, Advenier C, Devillier P. Expression and function of human hemokinin-1 in human and guinea pig airways. Respir Res 2010; 11:139. [PMID: 20929541 PMCID: PMC2959027 DOI: 10.1186/1465-9921-11-139] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2010] [Accepted: 10/07/2010] [Indexed: 11/23/2022] Open
Abstract
Background Human hemokinin-1 (hHK-1) and endokinins are peptides of the tachykinin family encoded by the TAC4 gene. TAC4 and hHK-1 expression as well as effects of hHK-1 in the lung and airways remain however unknown and were explored in this study. Methods RT-PCR analysis was performed on human bronchi to assess expression of tachykinin and tachykinin receptors genes. Enzyme immunoassay was used to quantify hHK-1, and effects of hHK-1 and endokinins on contraction of human and guinea pig airways were then evaluated, as well as the role of hHK-1 on cytokines production by human lung parenchyma or bronchi explants and by lung macrophages. Results In human bronchi, expression of the genes that encode for hHK-1, tachykinin NK1-and NK2-receptors was demonstrated. hHK-1 protein was found in supernatants from explants of human bronchi, lung parenchyma and lung macrophages. Exogenous hHK-1 caused a contractile response in human bronchi mainly through the activation of NK2-receptors, which blockade unmasked a NK1-receptor involvement, subject to a rapid desensitization. In the guinea pig trachea, hHK-1 caused a concentration-dependant contraction mainly mediated through the activation of NK1-receptors. Endokinin A/B exerted similar effects to hHK-1 on both human bronchi and guinea pig trachea, whereas endokinins C and D were inactive. hHK-1 had no impact on the production of cytokines by explants of human bronchi or lung parenchyma, or by human lung macrophages. Conclusions We demonstrate endogenous expression of TAC4 in human bronchi, the encoded peptide hHK-1 being expressed and involved in contraction of human and guinea pig airways.
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Affiliation(s)
- Stanislas Grassin-Delyle
- Laboratory of pulmonary pharmacology UPRES EA220, Foch Hospital, University Versailles-Saint Quentin en Yvelines, 11 rue Guillaume Lenoir, Suresnes, France.
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Naono-Nakayama R, Sunakawa N, Ikeda T, Matsushima O, Nishimori T. Subcutaneous injection of endokinin C/D attenuates carrageenan-induced inflammation. Peptides 2010; 31:1767-71. [PMID: 20638946 DOI: 10.1016/j.peptides.2010.05.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2010] [Revised: 05/24/2010] [Accepted: 05/24/2010] [Indexed: 10/19/2022]
Abstract
Endokinins, encoded by the human preprotachykinin C (PPT-C)/TAC4 gene, are peptides that consist of endokinin A (EKA), B (EKB), C (EKC) and D (EKD) and belong to the tachykinin family. Intrathecal injection of EKC/D (using the common carboxyl-terminal duodecapeptide in EKC and EKD) markedly attenuated the induction of thermal hyperalgesia and scratching behavior by intrathecal administration of substance P (SP), indicating that EKC/D has an antagonistic effect on the neurokinin 1 receptor (NK1R), SP-preferring receptor, at the spinal level; however, the pharmacological function of EKC/D at the periphery is not yet understood. Therefore, to clarify the effect of EKC/D on the peripheral tissue, the effect of subcutaneous injection of EKC/D on carrageenan-induced inflammation was examined. Subcutaneous injection of EKC/D attenuated an increase in paw volume following carrageenan-induced inflammation in a dose-dependent manner. Indeed, the increased paw volume was significantly decreased 40 min after treatment with 10(-4) M (10 nmol) and 10(-3) M (100 nmol) EKC/D (100 microl/rat). Similarly, injection of NK1R antagonists such as L-703,606 and Spantide I (10(-3) M) attenuated the increased paw volume following inflammation. Furthermore, the reduced withdrawal latency evoked by inflammation following subcutaneous injection of carrageenan was also dose-dependently attenuated by EKC/D administration. These results indicate that subcutaneous injection of EKC/D elicits an anti-inflammatory effect on carrageenan-induced inflammation.
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Affiliation(s)
- Rumi Naono-Nakayama
- Division of Neurobiology, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki, Miyazaki 889-1692, Japan.
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Sunakawa N, Naono R, Ikeda T, Matsushima O, Sakoda S, Nishimori T. The amino-terminal region of hemokinin-1 regulates the induction of thermal hyperalgesia in rats. Neuropeptides 2010; 44:273-8. [PMID: 20176398 DOI: 10.1016/j.npep.2010.01.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2009] [Revised: 12/28/2009] [Accepted: 01/26/2010] [Indexed: 10/19/2022]
Abstract
It is known that intrathecal administration of substance P (SP) induces thermal hyperalgesia, whereas hemokinin-1 (HK-1), a member of the same tachykinin family as SP, hardly induces thermal hyperalgesia; however, the underlying mechanism remains to be elucidated. Therefore, we aimed to clarify which amino acid of these peptides contributes to the induction of thermal hyperalgesia. When two chimera peptides between the N-terminal region of SP and the C-terminal region of HK-1, and vice versa, SP (1-5)/HK-1 and HK-1 (1-5)/SP, were intrathecally administered, SP (1-5)/HK-1 induced thermal hyperalgesia whereas HK-1 (1-5)/SP had hardly any effect; furthermore, thermal hyperalgesia was induced by only C-terminal fragments of HK-1 and SP. These findings indicate that the N-terminal region of HK-1 is involved in the non-induction of thermal hyperalgesia. Next, we synthesized and intrathecally administered these chimera peptides in which part of the N-terminal region of HK-1 was replaced with that of SP, and vice versa, and all synthesized peptides induced thermal hyperalgesia. Both SP (1-2)/HK-1 and HK-1 (1-4)/SP certainly induced thermal hyperalgesia, although HK-1 and HK-1 (1-5)/SP had hardly any effect; therefore, it is probable that Ser at the 2nd position and Arg at the 5th position of HK-1 may be involved in the non-induction of thermal hyperalgesia. Furthermore, peptides in which amino acid at the 3rd and/or 4th positions of HK-1 was replaced with that of SP were synthesized. Intrathecal administration of HK-1 (1-2,4-5)/SP, but not HK-1 (1-2,5)/SP and HK-1 (1-3,5)/SP, hardly induced thermal hyperalgesia. These findings indicate that three amino acids, Ser, Thr and Arg at the 2nd, 4th and 5th positions of HK-1, respectively, regulate the induction of thermal hyperalgesia by HK-1.
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Affiliation(s)
- N Sunakawa
- Division of Oral and Maxillofacial Surgery, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, University of Miyazaki, Kiyotake, Miyazaki 889-1692, Japan
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Yang Y, Ni Z, Dong S. Effects of Endokinin A/B and Endokinin C/D on the antinociception of Endomorphin-1 in mice. Peptides 2010; 31:689-95. [PMID: 20035812 DOI: 10.1016/j.peptides.2009.12.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2009] [Revised: 12/16/2009] [Accepted: 12/16/2009] [Indexed: 01/24/2023]
Abstract
In our previous study, Endokinin A/B (EKA/B, the common C-terminal decapeptide in Endokinin A and Endokinin B) was found to induce analgesic effect at high dose and nociception at low dose, while Endokinin C/D (EKC/D, the common C-terminal duodecapeptide in Endokinin C and Endokinin D) has analgesic effect only. So in this study an attempt was undertaken to investigate the interaction of EKA/B and EKC/D with Endomorphin-1 (EM-1) on antinociceptive effect at supraspinal level. Results showed that the antinociceptive effect of EM-1 was enhanced by high dose of EKA/B and abolished by low dose of EKA/B, while EKC/D could only enhance the analgesic effect. Mechanism studies showed that EKA/B blocked the antinociception of EM-1 by activating neurokinin-1 receptor (NK(1)), whose specific antagonist, SR140333B could fully block EKA/B-induced attenuation on the analgesic response of EM-1. Surprisingly, EKC/D could also block the same EKA/B-induced attenuation. Taken together, the different effects of EKA/B and EKC/D on the antinociception of EM-1 may pave the way for a new strategy on investigating the interaction between tachykinins and opioids on pain modulation.
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Affiliation(s)
- Yinliang Yang
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, 222 Tianshui South Road, Lanzhou, Gansu 730000, China
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Recio-Pinto E, Castillo C. Peripheral N-methyl-D-aspartate receptors as possible targets for chronic pain treatment. ACTA ACUST UNITED AC 2010. [DOI: 10.1053/j.trap.2010.04.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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16
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Naono-Nakayama R, Sunakawa N, Ikeda T, Nishimori T. Differential effects of substance P or hemokinin-1 on transient receptor potential channels, TRPV1, TRPA1 and TRPM8, in the rat. Neuropeptides 2010; 44:57-61. [PMID: 19926130 DOI: 10.1016/j.npep.2009.10.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2009] [Revised: 10/09/2009] [Accepted: 10/14/2009] [Indexed: 11/16/2022]
Abstract
Two tachykinin peptides, substance P (SP) and hemokinin-1 (HK-1), and three transient receptor potential (TRP) channels, TRPV1, TRPA1 and TRPM8, are similarly localized in the spinal dorsal horn and dorsal root ganglion, suggesting that TRP channels may be related or modulated by these tachykinin peptides. Thus, to clarify whether the responses of TRP channels are modulated by SP or HK-1, the effects of pretreatment with SP or HK-1 on the induction of scratching behavior by TRP channel agonists were examined. Pretreatment with SP or HK-1 enhanced the induction of scratching behavior by resiniferatoxin, a TRPV1 agonist, whereas scratching behavior induced by menthol, a TRPM8 agonist, was suppressed by pretreatment with these peptides. On the other hand, pretreatment with SP, but not HK-1, suppressed the induction of scratching behavior by cinnamaldehyde, a TRPA1 agonist. Taken together, the present results indicate that SP or HK-1 differentially modulated the response of TRPV1, TRPA1 or TRPM8 channel.
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Affiliation(s)
- Rumi Naono-Nakayama
- Division of Neurobiology, Faculty of Medicine, University of Miyazaki, Kiyotake, Miyazaki 889-1692, Japan.
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Nakayama T, Naono R, Ikeda T, Nishimori T. NMDA and AMPA receptors contribute to the maintenance of substance P-induced thermal hyperalgesia. Neurosci Res 2010; 67:18-24. [PMID: 20096735 DOI: 10.1016/j.neures.2010.01.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2009] [Revised: 01/14/2010] [Accepted: 01/15/2010] [Indexed: 11/25/2022]
Abstract
It is well known that intrathecal administration of substance P (SP) induces thermal hyperalgesia, but the mechanisms underlying the maintenance of SP-induced thermal hyperalgesia remain to be clarified. Thus, to clarify the receptors involved in the maintenance of SP-induced thermal hyperalgesia, the effect of administering SP or glutamate receptor agonists, NMDA or AMPA, under SP-induced thermal hyperalgesia was investigated. Also, the effect of pretreatment with protein kinase inhibitors on scratching behavior by NMDA or AMPA under SP-induced thermal hyperalgesia was examined. Under SP-induced thermal hyperalgesia, the number of scratchings following SP administration was time-dependently suppressed, whereas the number of scratchings after NMDA or AMPA administration was markedly enhanced and SP-induced thermal hyperalgesia was attenuated by pretreatment with NMDA or AMPA receptor antagonist. Furthermore, pretreatment with kinase inhibitors significantly attenuated the enhancement of scratching behavior by NMDA or AMPA under SP-induced thermal hyperalgesia. These findings indicate that SP-induced thermal hyperalgesia may be maintained through the enhanced responsiveness of NMDA or AMPA receptors, but not the receptor of SP, mediated by kinases.
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Affiliation(s)
- Tomohiro Nakayama
- Division of Neurobiology, Faculty of Medicine, University of Miyazaki, Kiyotake, Miyazaki 889-1692, Japan
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Yang Y, Dong S. Effects of Endokinin A/B and Endokinin C/D on the modulation of pain in mice. Peptides 2010; 31:94-100. [PMID: 19854230 DOI: 10.1016/j.peptides.2009.10.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2009] [Revised: 10/14/2009] [Accepted: 10/14/2009] [Indexed: 10/20/2022]
Abstract
Endokinins are novel tachykinins encoded on the human TAC4 and consist of Endokinin A (EKA), B (EKB), C (EKC) and D (EKD). To date, the function of Endokinins in pain processing was not fully understood. Therefore the aim of this study was to investigate the effects of Endokinin A/B (EKA/B, the common C-terminal decapeptide in EKA and EKB) and Endokinin C/D (EKC/D, the common C-terminal duodecapeptide in EKC and EKD) on pain modulation at supraspinal level in mice. Intracerebroventricular (i.c.v.) administration of EKA/B (1, 3, 12, 20nmol/mouse) dose dependently induced potent analgesic effect. This effect could be fully antagonized by SR140333B but not SR48968C or SR142801. Naloxone could also block the analgesic effect, suggesting that this analgesic effect is related to opioid receptors. However, i.c.v. administration of EKA/B (10, 30, 100pmol/mouse) caused hyperalgesic effect significantly, with a "U" shape curve. Interestingly, the hyperalgesic effect induced by EKA/B could be attenuated by SR140333B, SR142801 but not SR48968C. I.c.v. administration of EKC/D (1, 3, 12, 20nmol/mouse) also dose dependently induced analgesic effect, which could not be blocked by SR48968C or SR142801 or naloxone. But to our astonishment, it could be significantly enhanced by SR140333B. More interestingly, the hyperalgesic effect induced by EKA/B could be significantly attenuated by EKC/D. In addition, the analgesic effect induced by co-administration of EKA/B and EKC/D was much less stronger than the effect of either EKA/B or EKC/D.
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Affiliation(s)
- Yinliang Yang
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Lanzhou University, Lanzhou, China
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19
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Effect of the carboxyl-terminal of endokinins on SP-induced pain-related behavior. Biochem Biophys Res Commun 2009; 378:182-5. [DOI: 10.1016/j.bbrc.2008.04.192] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2008] [Accepted: 04/04/2008] [Indexed: 02/04/2023]
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Kong ZQ, Fu CY, Chen Q, Wang R. Cardiovascular responses to intravenous administration of human hemokinin-1 and its truncated form hemokinin-1(4-11) in anesthetized rats. Eur J Pharmacol 2008; 590:310-6. [PMID: 18582457 DOI: 10.1016/j.ejphar.2008.05.049] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2007] [Revised: 05/14/2008] [Accepted: 05/31/2008] [Indexed: 10/22/2022]
Abstract
Human hemokinin-1 and its carboxy-terminal fragment human hemokinin-1(4-11) have been recently identified as the members of the tachykinin family. The peripheral cardiovascular effects of these two tachykinin peptides were investigated in anesthetized rats. Lower doses of human hemokinin-1 (0.1-3 nmol/kg) injected intravenously (i.v.) induced depressor response, whereas higher doses (10 and 30 nmol/kg) caused biphasic (depressor and pressor) responses. The depressor response is primarily due to the action on endothelial tachykinin NK(1) receptor to release endothelium-derived relaxing factor (NO) and vagal reflex was absent in this modulation. The pressor response is mediated through the activation of tachykinin NK(1) receptor to release catecholamines from sympathetic ganglia and adrenal medulla. Moreover, human hemokinin-1 injected i.v. produced a dose-dependent tachycardia response along with blood pressure responses and the activation of sympathetic ganglia and adrenal medulla are involved in the tachycardia response. Human hemokinin-1(4-11) only lowered mean arterial pressure dose-dependently (0.1-30 nmol/kg) and the mechanisms involved in the depressor response are similar to that of human hemokinin-1. Additionally, human hemokinin-1(4-11) could also produce tachycardia response dose-dependently and the mechanisms involved in the tachycardia response are similar to that of human hemokinin-1 except that bilateral adrenalectomy could not affect the tachycardia markedly, indicating that the tachycardia induced by human hemokinin-1(4-11) is primarily due to the stimulation of sympathetic ganglia. In a word, to a certain extent, human hemokinin-1(4-11) is the active fragment of human hemokinin-1, however, the differences between human hemokinin-1 and hemokinin-1(4-11) involved in the effects of cardiovascular system suggest that the divergent amino acid residues at the N-terminus of human hemokinin-1 produced different activation properties for tachykinin NK(1) receptor.
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Affiliation(s)
- Zi-Qing Kong
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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Naono R, Nakayama T, Ikeda T, Matsusima O, Nishimori T. Pharmacological characterization of desensitization in scratching behavior induced by intrathecal administration of hemokinin-1 in the rat. Neuropeptides 2008; 42:47-55. [PMID: 18055010 DOI: 10.1016/j.npep.2007.10.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2007] [Revised: 10/23/2007] [Accepted: 10/23/2007] [Indexed: 10/22/2022]
Abstract
Desensitization is induced by the repeated administration of high doses of substance P (SP) or hemokinin-1 (HK-1). However, little information is available about the mechanisms involved in the induction of desensitization by these peptides. Thus, to characterize this desensitization, we examined the dose-dependent effect of these peptides, the effect of pretreatment with neurokinin 1(NK1) receptor antagonists, and the effect of pretreatment with inhibitors of protein kinases such as protein kinase A (PKA), protein kinase C (PKC), calcium/calmodulin kinase II (CaMKII) and mitogen-activated protein kinase kinase (MEK). The number of scratchings induced by 10(-3)M SP or HK-1 decreased following pretreatment with 10(-11)-10(-3)M SP or HK-1 with a marked reduction at 10(-3) and 10(-6)M SP or HK-1. The effect of NK1 receptor antagonists on desensitization induced by pretreatment with 10(-6)M SP was marked, whereas there was little effect of pretreatment with these antagonists on 10(-6)M HK-1-induced desensitization. Additionally, 10(-6)M SP- and HK-1-induced desensitization was attenuated by pretreatment with PKA, PKC and MEK inhibitors, except a CaMKII inhibitor that inhibited SP-induced desensitization. These results indicate that the receptor and kinases involved in HK-1-induced desensitization are partially different from those of SP.
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Affiliation(s)
- R Naono
- Division of Neurobiology, Faculty of Medicine, University of Miyazaki, Kiyotake, Miyazaki 889-1692, Japan.
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Naono R, Nakayama T, Ikeda T, Matsushima O, Nishimori T. Leucine at the carboxyl-terminal of endokinins C and D contributes to elicitation of the antagonistic effect on substance P in rat pain processing. Brain Res 2007; 1165:71-80. [PMID: 17655832 DOI: 10.1016/j.brainres.2007.05.062] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2007] [Revised: 05/30/2007] [Accepted: 05/30/2007] [Indexed: 02/05/2023]
Abstract
Endokinins are tachykinin peptides designated from a human preprotachykinin C (PPT-C, TAC4) gene and consist of endokinin A (EKA), endokinin B (EKB), endokinin C (EKC) and endokinin D (EKD). A representative of mammalian tachykinins is substance P (SP), which functions as a neurotransmitter or modulator in the pain system; however, little is known about the role of these endokinins, especially EKC and EKD, in pain processing. Therefore, we evaluated the effects of EKC/D (using the common carboxyl-terminal duodecapeptide in EKC and EKD) on pain processing in rats. Pretreatment with EKC/D prevented induction of scratching behavior and thermal hyperalgesia by intrathecal administration of EKA/B (using the common C-terminal decapeptide in EKA and EKB) and SP and c-Fos expression in laminae I/II and V/VI of the spinal cord by noxious thermal stimulation. A prominent difference between EKC/D and SP is the presence of leucine instead of methionine at the carboxyl-terminal of EKC/D. Thus, to clarify whether leucine at the carboxyl-terminal of EKC/D plays an important role in determining the inhibitory effect of this peptide, we intrathecally administered [Met(12)]-EKC/D in which only leucine of EKC/D is replaced by methionine. This peptide did not exhibit the inhibitory effect on SP-induced scratching behavior or thermal hyperalgesia but conversely caused thermal hyperalgesia. Taken together, these findings indicate that EKC/D has an inhibitory effect on pain processing in the rat spinal cord, and the effect is due to leucine at the carboxyl-terminal of EKC/D.
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Affiliation(s)
- Rumi Naono
- Division of Neurobiology, Faculty of Medicine, University of Miyazaki, Kiyotake, Miyazaki 889-1692, Japan
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