期刊
ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS
卷 388, 期 2, 页码 261-266出版社
ACADEMIC PRESS INC
DOI: 10.1006/abbi.2001.2292
关键词
homogenates; total reactive antioxidant potential (TRAP); antioxidants
This study evaluates the possibility of obtaining total reactive antioxidant potential (TRAP) indexes in homogenates and their cytosolic fractions by a procedure based on the quenching of luminol luminescence induced by the thermolysis of 2,2'-azo-bis(2-amidinopropane). Measurements were performed in rat brain, liver, kidney, and heart homogenates. TRAP indexes can be easily determined both in homogenates and their cytosolic fractions. The results obtained indicate that heart homogenates are the least and liver homogenates the most protected of the systems considered. Glutathione is the measured antioxidant that contributes the most to TRAP values, while uric acid makes a significant contribution only in liver. A calculation of theoretical TRAP values from the measured concentrations of the main antioxidants (glutathione, uric acid, ascorbic acid, and alpha-tocopherol) for the different homogenates shows that, in most tissues (liver, brain, and kidney), nearly 50% of the experimentally determined TRAP values are not accounted for. This difference is mainly due to the contribution of proteins to the measured TRAP. (C) 2001 Academic Press.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据