Acute and Chronic Effects of Hyperosmolality on mRNA and Protein Expression and the Activity of Na-K-ATPase in the IMCD
Acute and Chronic Effects of Hyperosmolality on mRNA and Protein Expression and the Activity of Na-K-ATPase in the IMCD
复制标题
高渗透压对 IMCD 中 mRNA 和蛋白质表达以及 Na-K-ATP 酶活性的急性和慢性影响
DOI:
10.1159/000020617
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发表时间:
1999
影响因子:
--
通讯作者:
F. Marumo
中科院分区:
文献类型:
--
作者:
M. Takayama;H. Nonoguchi;Tianxin Yang;K. Machida;Y. Terada;A. Owada;K. Tomita;F. Marumo
We investigated acute and chronic effects of hyperosmolality on mRNA and protein expressions of Na-K-ATPase α and β isoforms and Na-K-ATPase activity in the rat inner medullary collecting duct (IMCD). Incubation of IMCD in hypertonic medium for 30 min reduced the Na-K-ATPase activity by 50%. The Na-K-ATPase activity of dehydrated rats measured in isotonic medium was decreased, and incubation in hypertonic medium did not further decrease the activity. Incubation of IMCD in hypertonic medium for 6 h did not change α1 mRNA. In contrast, dehydration decreased α1 subunit mRNA and protein and β1 protein expressions without changing β1 mRNA. These data show (1) that acute hyperosmolality decreases Na-K-ATPase activity in IMCD without changing α1 and β1 mRNA and (2) that 2 days of dehydration decreased Na-K-ATPase activity by reducing α1 and β1 proteins. Thus, the mechanisms for the inhibition of the Na-K-ATPase activity in IMCD is defferent between acute and chronic exposure to hyperosmolality.
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DOI:
10.1152/ajprenal.1993.265.6.f792
发表时间:
1993
期刊:
The American journal of physiology
影响因子:
--
作者:
Ahn,KY;Madsen,KM;Tisher,CC;Kone,BC
通讯作者:
Kone,BC
DOI:
10.1073/pnas.84.24.9030
发表时间:
1987
影响因子:
11.1
作者:
Emanuel,JR;Garetz,S;Stone,L;Levenson,R
通讯作者:
Levenson,R
DOI:
--
发表时间:
1989
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Martin-Vasallo,P;Dackowski,W;Emanuel,JR;Levenson,R
通讯作者:
Levenson,R
DOI:
10.1152/ajpcell.1984.247.5.c314
发表时间:
1984
期刊:
The American journal of physiology
影响因子:
--
作者:
O'Neil,RG;Dubinsky,WP
通讯作者:
Dubinsky,WP
DOI:
--
发表时间:
1990
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Shyjan,AW;Gottardi,C;Levenson,R
通讯作者:
Levenson,R