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与大鼠相比，欧洲海鲈（Dicentrarchus labrax L.）体内多胺的分布及其生物合成酶的活性

Corti A, Astancolle S, Davalli P, Bacciottini F, Casti A, Viviani R

Istituto di Chimica Biologica dell'Universita' di Modena, Italy.

Comp Biochem Physiol B. 1987;88(2):475-80. doi: 10.1016/0305-0491(87)90330-0.

Abstract

In the liver, heart and brain of the European sea bass, putrescine concentrations are much higher than in the equivalent rat tissues; spermidine and spermine levels are smaller. 2. Ornithine decarboxylase in the bass liver is more active, but less stable than that in the rat; stability is acquired upon partial purification. Bass liver adenosylmethionine decarboxylase activity is less than that found in the rat. Both are activated and stabilized by putrescine. 4. The activating effect of putrescine decreases as the assay temperature is decreased. This may explain the high level of putrescine but low levels of spermidine and spermine in the bass liver.

摘要

在欧洲海鲈的肝脏、心脏和大脑中，腐胺浓度远高于同等大鼠组织中的浓度；亚精胺和精胺水平则较低。2. 鲈鱼肝脏中的鸟氨酸脱羧酶活性更高，但比大鼠肝脏中的酶稳定性更低；部分纯化后可获得稳定性。鲈鱼肝脏腺苷甲硫氨酸脱羧酶活性低于大鼠。两者都可被腐胺激活并稳定。4. 随着测定温度降低，腐胺的激活作用减弱。这可能解释了鲈鱼肝脏中腐胺水平高但亚精胺和精胺水平低的现象。