OUABAIN-INSENSITIVE NA-ATPASE ACTIVITY IN HOMOGENATES FROM DIFFERENT ANIMAL-TISSUES

被引：48

作者：

MORETTI, R ^{[1
]}

MARTIN, M ^{[1
]}

PROVERBIO, T ^{[1
]}

PROVERBIO, F ^{[1
]}

MARIN, R ^{[1
]}

机构：

[1] INST VENEZOLANO INVEST CIENT, CTR BIOFIS & BIOQUIM, AP 21827, CARACAS 1020A, VENEZUELA

来源：

COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY | 1991年 / 98卷 / 04期

关键词：

D O I：

10.1016/0305-0491(91)90265-F

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

1. Two Na+-stimulated ATPase activities were determined in gill homogenates from squid, shrimp and teleost fish; in kidney slice homogenates from teleost fish, bullfrog, toad, iguana, chicken, duck, rat, pig and cow, as well as in homogenates from rat small intestinal cells, brain cortex and liver slices. The two Na+-stimulated ATPase activities, the Na- and the Na,K-ATPase, showed a different behavior toward K+ and ouabain. 2. The ouabain-insensitive, K+-independent, Na-ATPase activity for all the studied homogenates was completely inhibited by 2 mM furosemide. 3. An increase in cell volume of the kidney, brain cortex and liver slice preparations, as well as of the rat small intestinal cells, produced a concomitant increase of the ouabain-insensitive Na-ATPase.

引用

页码：623 / 626

页数：4

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