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投喂后大西洋鳕鱼组织和血浆游离氨基酸浓度的变化。

Changes in tissue and plasma free amino acid concentrations after feeding in Atlantic cod.

机构信息

Department of Zoology, University of Aberdeen, Tillydrone Avenue, Aberdeen, AB9 2TN, UK.

出版信息

Fish Physiol Biochem. 1993 Mar;10(5):365-75. doi: 10.1007/BF00004503.

Abstract

Atlantic cod, Gadus morhua, were maintained on a diet of sandeel and after a 6-day fast were refed a single meal. Concentrations of free amino acids (AAs) were measured in hepatic portal and cardiac blood as well as in the stomach and white muscle at intervals of 6h up to 24h post-feeding. The appearance of both essential and non-essential AAs in the hepatic portal blood was significantly correlated, up to 12h after feeding, to their abundance in the diet. There was a significant decline in total AA concentration in cardiac blood after 6h, followed by a significant increase at 12h. No significant changes in total AA concentration were observed in the other tissues, although mean concentration increased at 12 or 18h. At a more detailed level, the post-prandial changes in concentration of some essential AAs were consistent with their having a role in the stimulation of protein synthesis after feeding.

摘要

大西洋鳕鱼(Gadus morhua)以沙鳗为食,禁食 6 天后,投喂一餐。每隔 6 小时至 24 小时测量肝门静脉和心脏血液以及胃和白肌中游离氨基酸(AA)的浓度。在喂食后 12 小时内,肝门静脉血液中必需和非必需氨基酸的出现与饮食中它们的丰度显著相关。喂食后 6 小时,心脏血液中总 AA 浓度显著下降,随后 12 小时显著增加。其他组织中总 AA 浓度无明显变化,尽管在 12 或 18 小时时平均浓度增加。在更详细的水平上,一些必需氨基酸浓度餐后的变化与其在进食后刺激蛋白质合成中的作用一致。

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