Connections between 5-HT-containing terminals and 5-HT_(2A) recep tor and γ-aminobutyric acid or glycine co-existed neurons in the rat medullary dorsal horn

Connections between 5-HT-containing terminals and 5-HT_(2A) recep tor and γ-aminobutyric acid or glycine co-existed neurons in the rat medullary dorsal horn

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摘要 Objective: To investigatetheconnectionsbetweenserotonin(5-HT)-containingterminalsand5-HT 2A receptor(5-HT 2A R)/γ-aminobutyricacid(GABA)or5-HT 2A R/glycineco-existedneuronsin theratmedullarydorsalhorn(MDH).Meth ods:Immunofluorescencehistochemicaltriple-stainingfor5-HT,5-HT 2A R,GABAor glycine.Results:5-HT-im-munoreactivefibersandterminalswerechieflylocatedinthesuperficiallaminae(laminaeⅠandⅡ)of theMDH.Neurons exhibiting5-HT 2A R-,GABA-or glycine-immunoreactivitiesweremainlyobservedin the superficiallaminae.Some5-HT 2A R-immunopositiveneuronsalsoexhibitedGABA-or glycine-immunoreactivities.5-HT-containingterminalsmade closecontactswith5-HT 2A R/GABAor5-HT 2A R/glycineco-existedneurons.Conclusion:5-HT 2A R/GABAor5-HT 2A R/glycineco-existinsomeof theneuronsinthesuperficiallaminaeof theMDH.5-HT-immunoreactiveterminalsformclose connectionswith5-HT 2A R/GABAor5-HT 2A R/glycineco-existedneurons. Objective: To investigatetheconnectionsbetweenserotonin(5-HT)-containingterminalsand5-HT 2A receptor(5-HT 2A R)/γ-aminobutyricacid(GABA)or5-HT 2A R/glycineco-existedneuronsin theratmedullarydorsalhorn(MDH).Meth ods:Immunofluorescencehistochemicaltriple-stainingfor5-HT,5-HT 2A R,GABAor glycine.Results:5-HT-im-munoreactivefibersandterminalswerechieflylocatedinthesuperficiallaminae(laminaeⅠandⅡ)of theMDH.Neurons exhibiting5-HT 2A R-,GABA-or glycine-immunoreactivitiesweremainlyobservedin the superficiallaminae.Some5-HT 2A R-immunopositiveneuronsalsoexhibitedGABA-or glycine-immunoreactivities.5-HT-containingterminalsmade closecontactswith5-HT 2A R/GABAor5-HT 2A R/glycineco-existedneurons.Conclusion:5-HT 2A R/GABAor5-HT 2A R/glycineco-existinsomeof theneuronsinthesuperficiallaminaeof theMDH.5-HT-immunoreactiveterminalsformclose connectionswith5-HT 2A R/GABAor5-HT 2A R/glycineco-existedneurons.

作者李辉李云庆

出处《Journal of Medical Colleges of PLA(China)》 CAS 2001年第3期190-192,199,共4页 中国人民解放军军医大学学报（英文版）

基金 Supported by National Natural Science Foundation of China(No.39970239 39800044) FoundationforUniversityKeyTeacherbytheMinistryofEducationofChina theNationalProgramofBasicResearchofChina(G1999054000).

关键词 serotonin γ-aminobutyric acid GLYCINE ANTINOCICEPTION DESCENDING inhibitory system MEDULLARY dorsal horn RAT serotonin γ-aminobutyricacid glycine antinociception descendinginhibitorysystem medullarydorsalhorn,rat

分类号 Q4 [生物学—生理学]

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Journal of Medical Colleges of PLA(China)

2001年第3期

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Connections between 5-HT-containing terminals and 5-HT_(2A) recep tor and γ-aminobutyric acid or glycine co-existed neurons in the rat medullary dorsal horn

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