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- Title
Dinitrosyl Iron Complexes with Glutathione Ligands Intercept Peroxynitrite and Protect Hemoglobin from Oxidative Modification.
- Authors
Kosmachevskaya, O. V.; Nasybullina, E. I.; Shumaev, K. B.; Chumikina, L. V.; Arabova, L. I.; Yaglova, N. V.; Obernikhin, S. S.; Topunov, A. F.
- Abstract
Dinitrosyl iron complexes with glutathione ligands (GS-DNICs) are a physiological form of nitric oxide that is stored and transported in the organism. In addition, these complexes can act as antioxidants and antiradical agents. It was shown that GS-DNICs protect hemoglobin (Hb) from oxidative modification by peroxynitrite. They prevent the formation of carbonyl Hb derivatives, the oxidation of tryptophan and tyrosine residues, degradation of the heme group, and the formation of interprotein cross-links. These complexes also inhibit the oxidation of dihydrorhodamine by peroxynitrite, which forms via the decomposition of 3-morpholinosyndonimine. In some cases, the antioxidant effect of GS-DNICs is comparable to that of reduced glutathione. The results allow GS-DNICs to be considered peroxynitrite interceptors and Hb protectors.
- Subjects
NITROSYL compounds; PEROXYNITRITE; HEMOGLOBINS; GLUTATHIONE; LIGANDS (Biochemistry); IRON
- Publication
Applied Biochemistry & Microbiology, 2021, Vol 57, Issue 4, p411
- ISSN
0003-6838
- Publication type
Article
- DOI
10.1134/S0003683821040098