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Chromium (V) and hydroxyl radical formation during the glutathione reductase-catalyzed reduction of chromium (VI)
Abstract
Electron spin resonance measurements provide evidence for the formation of long-lived Cr(V) intermediates in the reduction of Cr(VI) by glutathione reductase in the presence of NADPH and for the hydroxyl radical formation during the glutathione reductase catalyzed reduction of Cr(VI). Hydrogen peroxide suppresses Cr(V) and enhances the formation of hydroxyl radicals. Thus Cr(V) intermediates catalyze generation of hydroxyl radicals from hydrogen peroxide through a Fenton-like reaction. Thus the mechanism of Cr(VI) toxicity might involve the interaction between macromolecules and the hydroxyl radicals.
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“The toxicity of chromium is attributed to its conversion to chromium (III) by OH· after passing through the ion channels of the cytoplasmic membrane generation [61].”
From Novel Green Biosynthesis of 5-Fluorouracil Chromium Nanoparticles Using Harpullia pendula Extract for Treatment of Colorectal Cancer (2021) · cites this paper as [61]
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Self-citationSaddik, M. S., Elsayed, M. M. A., Abdelkader, M. S. A., El-Mokhtar, M. A., Abdel-Aleem, J. A., Abu-Dief, A. M., Al-Hakkani, M. F., Farghaly, H. S., & Abou-Taleb, H. A. (2021) · Pharmaceutics · doi:10.3390/pharmaceutics13020226 · Cited by 89
Metadata
- Authors
- Shi, X., & Dalal, N. S.
- Venue
- Biochemical and Biophysical Research Communications
- Publisher
- Elsevier BV
- Published
- 1989-08
- Volume
- 163
- Issue
- 1
- Pages
- 627-634
- ISSN
- 0006-291X
- Cited by
- 153
- References
- 0
- Language
- en
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