Effects of antioxidants and haemoglobin status on thet‐butyl hydroperoxide‐induced oxygen uptake by red blood cells
作者:
E. Lissi,
R. Franz,
J. Cabezas,
V. Fernández,
L. A. Videla,
期刊:
Cell Biochemistry and Function
(WILEY Available online 1986)
卷期:
Volume 4,
issue 1
页码: 61-68
ISSN:0263-6484
年代: 1986
DOI:10.1002/cbf.290040110
出版商: John Wiley&Sons, Ltd.
关键词: Red blood cell;oxygen uptake;t‐butyl hydroperoxide;haemoglobin status;antioxidants
数据来源: WILEY
摘要:
AbstractOxygen uptake by erythrocytes exposed tot‐butyl hydroperoxide (t‐BHP) exhibited an induction period. The rate of oxygen consumption can be reduced by antioxidants and blood plasma. The induction time was not appreciably modified by the antioxidants tested, however, plasma increased it by a factor of two. Thein vivopretreatment with diethyl maleate (0·6 g kg−1) produced increased rates of oxygen uptake without changes in the induction period, while vitamin E (12·5 mg kg−1) elicited lower oxygen consumption rates and longer induction times, compared to those observed in cells from control rats upon addition of the hydroperoxide. These results suggest that the antioxidants tested on thet‐BHP lipid peroxidation in erythrocyte suspensions act as inhibitors and/or retarders of the process. Furthermore, lipid peroxidation induced in these conditions seems to depend upon the haemoglobin status of the cells as oxygen uptake, malondialdehyde production and chemiluminescence were significantly higher in methaemoglobin‐containing cells than in those containing o
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