Adrenergic and muscarinic control of cochlear endolymph production.
Adrenergic and muscarinic control of cochlear endolymph production.
复制标题
肾上腺素和毒蕈碱控制耳蜗内淋巴的产生。
DOI:
10.1159/000059255
复制
发表时间:
2002
影响因子:
--
通讯作者:
Wangemann,Philine
中科院分区:
文献类型:
--
作者:
Wangemann,Philine
The transduction of sound into nerve impulses in the cochlea is dependent on the stria vascularis. It is a multilayered epithelium, which is part of the epithelial barrier between endolymph and perilymph. The current model designed to explain the generation of the endocochlear potential assumes that the molecular mechanism for the generation of the endocochlear potential is the KIR4. 1 K+ channel localized in the intermediate cells and that strial marginal cells play an indirect role in the generation of the endocochlear potential. This role is limited to the maintenance of a low K+ concentration in the intrastrial space by absorbing K+ from this space and secreting it into the endolymph. The molecular mechanisms for K+ secretion by strial marginal cells are well established. Strial marginal cells absorb K+ from the intrastrial space via the Na+-K+-ATPase and the Na+ 2ClJK+ cotransporter and secrete it across the apical membrane via the IsK LQT1 K+ channel. K+ secretion by strial marginal cells is not only required for the maintenance of the endocochlear potential and to provide the charge carrier for the transduction mechanism, but also to maintain a constant volume of endolymph. Thus, the presence of multiple control mechanisms regulating the rate of K+ secretion is likely. Recent observations suggest that the rate of K+ secretion in strial marginal cells is stimulated by ß1/K v-adrenergic receptors and inhibited by M3 and/or M4 muscarinic receptors.
登录
查看更多内容
影响因子:
2.8
作者:
S. Takeuchi;A. Kakigi;T. Takeda;H. Saito;A. Irimajiri
通讯作者:
A. Irimajiri
影响因子:
2.5
作者:
M. Ando;S. Takeuchi
通讯作者:
S. Takeuchi
DOI:
--
发表时间:
1994
期刊:
The Japanese Journal of Physiology
影响因子:
--
作者:
S. Takeuchi;A. Irimajiri
通讯作者:
A. Irimajiri
DOI:
--
发表时间:
1995
期刊:
Auditory neuroscience
影响因子:
--
作者:
Liu,Jianzhong;Kozakura,Kenichi;Marcus,DanielC
通讯作者:
Marcus,DanielC
影响因子:
2.8
作者:
G. Zajic;M. Anniko;J. Schacht
通讯作者:
J. Schacht