Oxygen free radical scavenger properties of dehydroepiandrosterone.

Abstract:

:The microsomes from dehydroepiandrosterone (DHEA)-supplemented animals are good hydroxyl radical scavengers, as demonstrated through electron spin resonance and deoxyribose degradation. The ability of DHEA-supplemented microsomes to react with superoxide radical was also demonstrated through the inhibition of nitroblue-tetrazolium reduction determined by superoxide radicals produced in a hypoxanthine-xanthine oxidase system. DHEA-enriched microsomes, obtained from acutely DHEA-treated rats, become resistant to iron-dependent lipid peroxidation triggered by H2O2/FeSO4 and ascorbate/FeSO4. The direct addition of DHEA to microsomes from untreated rats failed to prevent iron-dependent lipid peroxidation, even if the microsomes were preincubated with DHEA for up to 15 min, indicating that in vivo transformation is required before antioxidant action can be exerted.

journal_name

Cell Biochem Funct

authors

Tamagno E,Aragno M,Boccuzzi G,Gallo M,Parola S,Fubini B,Poli G,Danni O

doi

10.1002/(SICI)1099-0844(199803)16:1<57::AID-CBF771

subject

Has Abstract

pub_date

1998-03-01 00:00:00

pages

57-63

issue

1

eissn

0263-6484

issn

1099-0844

pii

10.1002/(SICI)1099-0844(199803)16:1<57::AID-CBF771

journal_volume

16

pub_type

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