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In vitro effects of compounds isolated from Sideritis brevibracteata on bovine kidney cortex glutathione reductase.
Author(s) -
Berivan Tandoğan,
Ayşegül Güvenç,
İhsan Çalış,
Nuriye Nuray Ulusu
Publication year - 2011
Publication title -
acta biochimica polonica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.452
H-Index - 78
eISSN - 1734-154X
pISSN - 0001-527X
DOI - 10.18388/abp.2011_2213
Subject(s) - glutathione , chemistry , glutathione reductase , in vitro , flavones , biochemistry , antioxidant , glycoside , enzyme , stereochemistry , chromatography , glutathione peroxidase
Glutathione reductase (GR, E.C 1.6.4.2) is a flavoprotein that catalyzes NADPH-dependent reduction of oxidized glutathione (GSSG) to reduced glutathione (GSH). The aim of this study was to investigate in vitro effects of phenolic compounds isolated from Sideritis brevibracteata on bovine kidney GR. The Sideritis species are widely found in nature and commonly used as medicinal plants. 7-O-glycosides of 8-OH-flavones (hypolaetin, isoscutellarein and 3'-hydroxy-4'-O-methylisoscutellarein) were isolated from aerial parts of Sideritis brevibracteata. These compounds inhibited bovine kidney cortex GR in a concentration-dependent manner. Kinetic characterization of the inhibition was also performed.

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