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[铬在人类和动物机体中的生化作用机制]

[Biochemical mechanisms of chromium action in the human and animal organism].

作者信息

Iskra R Ia, Ianovych V G

出版信息

Ukr Biokhim Zh (1999). 2011 Sep-Oct;83(5):5-12.

Abstract

Modern data concerning biologic characteristics of chromium (Cr3+) its placement in nature, accessibility and metabolic action of its different forms in humans and animals is presented in this survey. Essentiality of chromium for humans is emphasized, data about consumption norms of this microelement and its use for curing different diseases especially diabetes mellitus and atherosclerosis of vessels are presented. The biochemical mechanisms of Cr3+ effect on the metabolism in the human and animal organism are analyzed. It is shown that the organism reacts to chrome additions by the change of some metabolism links. Chrome influences positively growth and development of foetus, stimulates metabolism of glucose and insulin in the humans and animals. However, at the set chromium requirements it is necessary to take into account its low availability in food, high release of Cr3+ from the organism under the influence of stress factors, considerable decline of its level with age, and also in the period of pregnancy and lactation. Therefore experimental researches of introduction of Cr3+ additions to the diet of people and forage of animals taking into account their body mass, age and clinical state, can explain the biochemical mechanisms of biological action of this microelement.

摘要

本次综述介绍了有关铬(Cr3+)生物学特性的现代数据,包括其在自然界中的分布、可获取性以及在人类和动物体内不同形式的代谢作用。强调了铬对人类的必要性,列出了该微量元素的摄入标准数据,以及其用于治疗不同疾病特别是糖尿病和血管动脉粥样硬化的数据。分析了Cr3+对人类和动物机体代谢作用的生化机制。结果表明,机体对添加铬的反应是某些代谢环节发生变化。铬对胎儿的生长发育有积极影响,刺激人类和动物体内的葡萄糖和胰岛素代谢。然而,在确定铬的需求量时,有必要考虑到其在食物中的低利用率、在应激因素影响下机体对Cr3+的高排泄率、其水平随年龄以及妊娠和哺乳期的显著下降。因此,考虑到人体质量、年龄和临床状态,对在人类饮食和动物饲料中添加Cr3+进行实验研究,有助于解释该微量元素生物学作用的生化机制。

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