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儿茶酚胺的自氧化是否参与缺血再灌注损伤?

Is the autoxidation of catecholamines involved in ischemia-reperfusion injury?

作者信息

Jewett S L, Eddy L J, Hochstein P

机构信息

Institute for Toxicology, University of Southern California, Los Angeles 90033.

出版信息

Free Radic Biol Med. 1989;6(2):185-8. doi: 10.1016/0891-5849(89)90116-0.

Abstract

The autoxidation of catecholamines has been proposed to be a source of oxygen radicals in ischemia-reperfusion injury. However, this autoxidation per se is extremely slow at physiological pH and therefore is unlikely to be a primary source of oxygen radicals in ischemia-reperfusion injury. On the other hand, oxygen radicals from catecholamines are more likely to arise through catalyzed oxidations involving enzymatic systems and/or metal ions. It is these latter reactions that may be of interest with respect to damage associated with ischemia-reperfusion injury.

摘要

儿茶酚胺的自氧化被认为是缺血再灌注损伤中氧自由基的一个来源。然而,在生理pH值下,这种自氧化本身极其缓慢,因此不太可能是缺血再灌注损伤中氧自由基的主要来源。另一方面,儿茶酚胺产生的氧自由基更可能是通过涉及酶系统和/或金属离子的催化氧化作用而产生的。正是这些后者的反应可能与缺血再灌注损伤相关的损害有关。

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