Nicotinic acetylcholine receptor channels in cat chemoreceptor cells.
Nicotinic acetylcholine receptor channels in cat chemoreceptor cells.
复制标题
猫化学感受器细胞中的烟碱乙酰胆碱受体通道。
DOI:
10.1007/978-1-4419-9280-2_37
复制
发表时间:
2003
影响因子:
--
通讯作者:
Shirahata,Machiko
中科院分区:
文献类型:
--
作者:
Higashi,Tomoko;Yamaguchi,Shigeki;McIntosh,JMichael;Shirahata,Machiko
Neurotransmitters are likely to play a key role for hypoxic chemotransmission in the carotid body. Among several neurotransmitters, ACh appears to be a major excitatory neurotransmitter in the cat carotid body (Fitzgerald, 2000). ACh may act directly on the afferent nerve endings and generates action potentials (Hayashida et al., 1980; Zhong & Nurse, 1997). Alternatively, ACh may work through nicotinic ACh receptors (nAChRs) in the carotid body chemosensory cells, glomus cells, and modulate the release of neurotransmitters (Fidone et al., 1990). Our recent data have shown the presence of ¦Á3, ¦Á4, ¦Â2 and ¦Â4, but not ¦Á7, subunits of nAChRs in the cat glomus cells (Hirasawa et al., in this book; Shirahata et al., 1998). Nicotinic AChRs belong to ligand-gated ion channels, that are composed of five receptor subunits. Their subunit compositions categorize nAChRs into three receptor types: (1) muscle type nAChRs, (2) heteromeric type neuronal nAChRs that consist of ¦Á subunits (¦Á2-6) and ¦Â subunits (¦Â2-4), and (3) homomeric type neuronal nAChRs that consist of only a subunits (¦Á7-9). Their stoichiometry and their electrophysiological characteristics depend on the subunit compositions (McGehee & Role, 1995; Lindstrom et al., 1996). Since neuronal nAChR channels are permeable to Ca2+and Na+ions, their activation could significantly influence the excitability and fonction of glomus cells. In this study we examined electrophysiological and pharmacological characteristics of nAChRs in glomus cells and infer their role in the excitability of glomus cells.
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DOI:
10.1152/jn.1997.78.5.2388
发表时间:
1997
期刊:
Journal of neurophysiology.
影响因子:
--
作者:
Shirahata,M;Fitzgerald,RS;Sham,JS
通讯作者:
Sham,JS
影响因子:
3.3
作者:
C. Wyatt;C. Peers
通讯作者:
C. Peers
影响因子:
2.9
作者:
H. Zhong;C. Nurse
通讯作者:
C. Nurse
影响因子:
--
作者:
Hirasawa,Serabi;Mendoza,JeffreyA;Jacoby,DavidB;Kobayashi,Chiyoko;Fitzgerald,RobertS;Schofield,Brian;Chandrasegaran,Srinivasan;Shirahata,Machiko
通讯作者:
Shirahata,Machiko