Muscarinic acetylcholine recepto r‐mediated increase of angiotensin type 2 receptor mRNA in PC12 cells
作者:
Kazuhiko Shibata,
Makino Ikuko,
Kazuhide Inoue,
Takeshi Katsuragi,
期刊:
NeuroReport
(OVID Available online 1998)
卷期:
Volume 9,
issue 17
页码: 3783-3789
ISSN:0959-4965
年代: 1998
出版商: OVID
关键词: Angiotensin type 2 receptor;Carbachol;Nitric oxide;PC12 cells;Protein kinase C
数据来源: OVID
摘要:
THE present study examined changes in the angiotensin type 2 (AT2) receptor mRNA level after carbachol exposure in PC12 cells. The AT2 receptor mRNA level increased 2-to 3-fold after 12–18 h of carbachol exposure (100 μM). The up-regulation of AT2 receptor mRNA was antagonized by atropine, which is a muscarinic receptor antagonist, thus suggesting that the increase in AT2 receptor mRNA is mediated via muscarinic acetylcholine receptors. This increase is blocked by NG-nitro-L-arginine-methylester, nitric oxide (NO) synthase inhibitor, and hemoglobin NO trap. Protein kinase C (PKC) inhibitors, H-7 and calphostin C, inhibited the carbachol-induced upregulation. In addition, a G kinase inhibitor, ODQ (1H-[1,2,4] oxadiazolo[4,3-a] quinoxalin-1-one), inhibited this increase. These findings suggest that the carbachol-induced increases in AT2 receptor mRNA is regulated by the activation of NO-cGMP and/or the PKC pathway.
点击下载:
PDF
(5852KB)
返 回