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Analgesic effect of highly reversible omega-conotoxin FVIA on N type Ca2+ channels

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dc.contributor.authorLee, Seungkyu-
dc.contributor.authorKim, Yoonji-
dc.contributor.authorBack, Seung Keun-
dc.contributor.authorChoi, Hee-Woo-
dc.contributor.authorJung, Hyun Ho-
dc.contributor.authorSuh, Hong-Won-
dc.contributor.authorKim, Hyun Jeong-
dc.contributor.authorKim, Jae Il-
dc.contributor.authorRhim, Hyewhon-
dc.contributor.authorNa, Heung Sik-
dc.contributor.authorRyu, Jae Ha-
dc.contributor.authorLee, Ju Yeon-
dc.date.accessioned2013-01-14T05:49:04Z-
dc.date.available2013-01-14T05:49:04Z-
dc.date.issued2010-12-21-
dc.identifier.citationMOLECULAR PAIN, Vol.6 :97 (21 December 2010)ko_KR
dc.identifier.issn1744-8069-
dc.identifier.urihttp://hdl.handle.net/10371/80365-
dc.description.abstractBackground: N-type Ca2+ channels (Ca(v)2.2) play an important role in the transmission of pain signals to the central nervous system. omega-Conotoxin (CTx)-MVIIA, also called ziconotide (Prialt (R)), effectively alleviates pain, without causing addiction, by blocking the pores of these channels. Unfortunately, CTx-MVIIA has a narrow therapeutic window and produces serious side effects due to the poor reversibility of its binding to the channel. It would thus be desirable to identify new analgesic blockers with binding characteristics that lead to fewer adverse side effects. Results: Here we identify a new CTx, FVIA, from the Korean Conus Fulmen and describe its effects on pain responses and blood pressure. The inhibitory effect of CTx-FVIA on N-type Ca2+ channel currents was dose-dependent and similar to that of CTx-MVIIA. However, the two conopeptides exhibited markedly different degrees of reversibility after block. CTx-FVIA effectively and dose-dependently reduced nociceptive behavior in the formalin test and in neuropathic pain models, and reduced mechanical and thermal allodynia in the tail nerve injury rat model. CTx-FVIA (10 ng) also showed significant analgesic effects on writhing in mouse neurotransmitter-and cytokine-induced pain models, though it had no effect on acute thermal pain and interferon-gamma induced pain. Interestingly, although both CTx-FVIA and CTx-MVIIA depressed arterial blood pressure immediately after administration, pressure recovered faster and to a greater degree after CTx-FVIA administration. Conclusions: The analgesic potency of CTx-FVIA and its greater reversibility could represent advantages over CTx-MVIIA for the treatment of refractory pain and contribute to the design of an analgesic with high potency and low side effects.ko_KR
dc.description.sponsorshipThis research was supported by grants from the Development of Marine Novel Compound Program of the Korean Ministry of Maritime Affairs and Fisheries, the National Research Foundation of Korea Grant funded by the Korean Government (MEST) (C1ABA001-2010-0020502), the Brain Research Center of the 21st Century Frontier Research Program (M103KV010005-06K2201-00610), and the BioImaging Research Center at the Gwangju Institute of Science and Technology. We thank Mr. Byung Il Kim (Pacific Diving School, Jeju Korea) for providing a photograph of Korean cone snails.-
dc.language.isoenko_KR
dc.publisherBIOMED CENTRAL LTDko_KR
dc.titleAnalgesic effect of highly reversible omega-conotoxin FVIA on N type Ca2+ channelsko_KR
dc.typeArticleko_KR
dc.contributor.AlternativeAuthor이승규-
dc.contributor.AlternativeAuthor김윤지-
dc.contributor.AlternativeAuthor백승근-
dc.contributor.AlternativeAuthor최희우-
dc.contributor.AlternativeAuthor정현호-
dc.contributor.AlternativeAuthor서홍원-
dc.contributor.AlternativeAuthor김현정-
dc.contributor.AlternativeAuthor김재일-
dc.contributor.AlternativeAuthor임혜원-
dc.contributor.AlternativeAuthor나흥식-
dc.contributor.AlternativeAuthor류재하-
dc.contributor.AlternativeAuthor이주연-
dc.identifier.doi10.1186/1744-8069-6-97-
dc.citation.journaltitleMOLECULAR PAIN-
dc.description.tc6-
Appears in Collections:
College of Dentistry/School of Dentistry (치과대학/치의학대학원)Dept. of Dentistry (치의학과)Journal Papers (저널논문_치의학과)
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