[钙离子对壶腹神经电位的影响]

[The effect of calcium ion on ampullary nerve potential].

作者信息

Hirakawa H, Harada Y, Suzuki M, Kanemi Y

机构信息

Department of Otolaryngology, Hiroshima University School of Medicine.

出版信息

Nihon Jibiinkoka Gakkai Kaiho. 1993 Jan;96(1):10-7. doi: 10.3950/jibiinkoka.96.10.

DOI:10.3950/jibiinkoka.96.10

PMID:8459303

Abstract

The effect of calcium ion (Ca2+) in the endolymphatic and/or perilymphatic space of the posterior semicircular canal (p.s.c.) nerve response was studied. When both endolymph and perilymph contained no Ca2+, no p.s.c. nerve response was observed. When only the endolymph contained Ca2+ and the perilymph was Ca2+ free, again no nerve response was observed. On the other hand, when only the perilymph contained Ca2+, p.s.c. nerve response was evoked. Therefore, Ca2+ in the perilymph was considered to be essential for maintaining the function of the p.s.c. as a mechanoreceptor.

摘要

研究了钙离子（Ca2+）在后半规管（p.s.c.）内淋巴和/或外淋巴间隙中对神经反应的影响。当内淋巴和外淋巴中均不含Ca2+时，未观察到p.s.c.神经反应。当仅内淋巴含有Ca2+而外淋巴不含Ca2+时，同样未观察到神经反应。另一方面，当仅外淋巴含有Ca2+时，可诱发p.s.c.神经反应。因此，外淋巴中的Ca2+被认为是维持p.s.c.作为机械感受器功能所必需的。