Neither spinal γ-aminobutyric acid-A nor strychnine-sensitive glycine receptor systems are the sole mediators of halothane depression of spinal dorsal horn sensory neurons

Masanori Yamauchi, Steven G. Shimada, Hiroshi Sekiyama, J. G. Collins

研究成果: Article査読

3 被引用数 (Scopus)

抄録

Inhaled anesthetics depress the response of spinal dorsal horn low-threshold (LT) neurons to peripheral receptive field stimulation. Part of that depression may be mediated by anesthetic interactions with γ-aminobutyric acid type A (GABAA) and strychnine-sensitive glycine inhibitory neurotransmitter systems. In this electrophysiological study, we attempted to antagonize halothane depression of LT neurons by administering bicuculline (a competitive GABAA antagonist) and/or strychnine (a competitive glycine antagonist) systemically, alone or in combination, to decerebrate, spinal cord-transected rats. We observed that both bicuculline and strychnine, alone or in combination, significantly but only partially reversed halothane depression of LT neuronal responses to receptive field stimulation. The inability of bicuculline and strychnine, alone or in combination, to completely reverse halothane depression suggests that although GABAA and glycine systems are involved in the observed halothane depression, additional mechanisms of action are also required for halothane depression of LT spinal sensory neurons.

本文言語English
ページ(範囲)417-423
ページ数7
ジャーナルAnesthesia and Analgesia
97
2
DOI
出版ステータスPublished - 2003 8 1
外部発表はい

ASJC Scopus subject areas

  • 麻酔学および疼痛医療

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