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冷适应金鱼(Carassius auratus)鳃和肾中钠钾ATP酶及镁ATP酶活性的改变

Altered activities of branchial and renal Na/K- and Mg-ATPases in cold-acclimated goldfish (Carassius auratus).

作者信息

Paxton R, Umminger B L

出版信息

Comp Biochem Physiol B. 1983;74(3):503-6. doi: 10.1016/0305-0491(83)90218-3.

DOI:10.1016/0305-0491(83)90218-3
PMID:6132750
Abstract
  1. Cold-acclimated (1 degree C) goldfish (Carassius auratus) branchial Na/K-ATPase activity was elevated 100% while renal Na/K-ATPase activity was not significantly affected compared with warm-acclimated (20 degrees C) goldfish. 2. Cold-acclimated goldfish branchial and renal Mg-ATPase activity was reduced 18 and 30% on a per mg protein basis, respectively. 3. Renal Na/K-ATPase activity was 4.6- and 1.6-fold greater than gill in cold- and warm-acclimated fish, respectively. 4. The elevated branchial Na/K-ATPase activity and the unchanged renal Na/K-ATPase activity are consistent with the maintenance of the reduced blood ion level in cold-acclimated goldfish.
摘要
  1. 与适应暖水(20摄氏度)的金鱼相比,适应冷水(1摄氏度)的金鱼鳃部钠钾ATP酶活性提高了100%,而肾脏钠钾ATP酶活性未受到显著影响。2. 以每毫克蛋白质计算,适应冷水的金鱼鳃部和肾脏的镁ATP酶活性分别降低了18%和30%。3. 在适应冷水和暖水的金鱼中,肾脏钠钾ATP酶活性分别比鳃部高4.6倍和1.6倍。4. 鳃部钠钾ATP酶活性的提高以及肾脏钠钾ATP酶活性的不变,与适应冷水的金鱼血液离子水平降低的维持情况相符。

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