Effects of zinc on lipids of erythrocytes from carp (Cyprinus carpio L.) acclimated to different temperatures

Comparative Biochemistry and Physiology Part C: Pharmacology, Toxicology and Endocrinology Pub Date : 2000-12-01 DOI:10.1016/S0742-8413(00)00161-4

T Gabryelak , A Filipiak , G Brichon

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引用次数: 20

Abstract

We compared the effect of zinc (0.01, 0.1, 0.5 and 1 mM) at two temperatures (5 and 20°C) on erythrocytes from summer and winter acclimatised carp. An increase in temperature from 5 to 20°C increased the unsaturation index (UI) and relative proportion (UI/SFA) of unsaturated to saturated fatty acids in total lipids of the red cells. At 5°C, the unsaturation index of phosphatidylcholine (PC), phosphatidylserine (PS), phosphatidylethanolamine (PE) and phosphatidylinositol (PI) decreased (30–40%) in the presence of 1 mM zinc. The change in unsaturation of phospholipids in the presence of zinc at 5°C is probably responsible for the alteration in structural integrity of erythrocyte membrane as observed by hemolysis and the decreased thiol group content in the erythrocytes. In light of this result, zinc may be considered an environmental hazard for these fish at low temperatures.

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锌对不同温度驯化鲤鱼红细胞脂质的影响

本研究比较了在5℃和20℃两种温度下添加0.01、0.1、0.5和1 mM锌对夏、冬驯化鲤鱼红细胞的影响。温度从5℃升高到20℃，红细胞总脂质中不饱和脂肪酸与饱和脂肪酸的不饱和指数(UI)和相对比例(UI/SFA)增加。在5℃时，1 mM锌的存在使磷脂酰胆碱(PC)、磷脂酰丝氨酸(PS)、磷脂酰乙醇胺(PE)和磷脂酰肌醇(PI)的不饱和指数降低了30-40%。在5°C锌存在下，磷脂不饱和的变化可能是红细胞膜结构完整性改变的原因，如溶血和红细胞中硫醇基团含量降低所观察到的。鉴于这一结果，锌可能被认为是低温下这些鱼类的环境危害。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Comparative Biochemistry and Physiology Part C: Pharmacology, Toxicology and Endocrinology

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