{"title":"Subtypes of central nicotinic receptors involved in learning and memory.","authors":"L J Chen, R Z Chen","doi":"","DOIUrl":null,"url":null,"abstract":"<p><strong>Aim: </strong>To observe the effects of different subtypes of central nicotinic receptor on learning and memory.</p><p><strong>Methods: </strong>Passive avoidance response, including step-down avoidance and step-through avoidance in mice and long-term potentiation (LTP) in rat hippocampal slices.</p><p><strong>Results: </strong>Hexamethonium (C6) 7 micrograms/mouse and kappa-bungarotoxin (kappa-BTX) 0.6 microgram/mouse inhibited the acquisition of avoidance conditioning in mice, and kappa-BTX yielded this effect with a dose-response relationship. kappa-BTX 1 mumol.L-1 suppressed the induction of LTP (P < 0.05), but not normal synaptic transmission and maintenance of LTP in rat hippocampal slices.</p><p><strong>Conclusion: </strong>The subtypes of central nicotinic receptor sensitive to kappa-BTX play an important role in learning and memory.</p>","PeriodicalId":24002,"journal":{"name":"Zhongguo yao li xue bao = Acta pharmacologica Sinica","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1999-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Zhongguo yao li xue bao = Acta pharmacologica Sinica","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Aim: To observe the effects of different subtypes of central nicotinic receptor on learning and memory.
Methods: Passive avoidance response, including step-down avoidance and step-through avoidance in mice and long-term potentiation (LTP) in rat hippocampal slices.
Results: Hexamethonium (C6) 7 micrograms/mouse and kappa-bungarotoxin (kappa-BTX) 0.6 microgram/mouse inhibited the acquisition of avoidance conditioning in mice, and kappa-BTX yielded this effect with a dose-response relationship. kappa-BTX 1 mumol.L-1 suppressed the induction of LTP (P < 0.05), but not normal synaptic transmission and maintenance of LTP in rat hippocampal slices.
Conclusion: The subtypes of central nicotinic receptor sensitive to kappa-BTX play an important role in learning and memory.
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