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Echinochrome, a naturally occurring iron chelator and free radical scavenger in artificial and natural membrane systems.
How do calcium ions induce free radical oxidation of hydroxy-1,4-naphthoquinone? Ca2+ stabilizes the naphthosemiquinone anion-radical of echinochrome A.
Effect of group II metal cations on catecholate oxidation.
- A. Lebedev, M. V. Ivanova, A. Timoshin, E. Ruuge
- Chemistry, BiologyChemphyschem : a European journal of chemical…
- 24 August 2007
The effects of Ca(2+) and other alkaline-earth metal cations on catecholate autoxidation can be defined as 1) additional deprotonation of catechol OH-groups involved in the formation of M(2+)-catecholate complexes and 2) formation of relatively stable free-radical intermediates responsible for chain propagation.
A comparative study on conformation and ligand binding of the neuronal uncoupling proteins.
- M. V. Ivanova, T. Hoang, Fern R. McSorley, Gabriela Krnac, Matthew D. Smith, M. Jelokhani-Niaraki
- Biology, ChemistryBiochemistry
- 26 January 2010
Despite dissimilar primary sequences, neuronal U CPs share common structural and functional properties with UCPs 1 and 3, supporting a common physiological role in addition to their specific roles in the CNS.
Iron Chelators and Free Radical Scavengers in Naturally Occurring Polyhydroxylated 1,4-Naphthoquinones
It is concluded that iron chelation predominates in the overall antioxidant potential of the polyhydroxynaphthoquinones.
Superoxide Formation in Cardiac Mitochondria and Effect of Phenolic Antioxidants
- A. L. Dudylina, M. V. Ivanova, K. Shumaev, E. Ruuge
- BiologyCell Biochemistry and Biophysics
- 14 September 2018
It was shown that during a 10 min incubation, caffeic acid in concentrations of 10–500 μM most effectively scavenged superoxide radicals formed in the complex III of the mitochondrial respiratory chain.
Blood Level of Osteonectin in Stenosing Atherosclerosis and Calcinosis of Coronary Arteries
- Y. Ragino, E. Kashtanova, M. V. Ivanova
- Biology, MedicineBulletin of Experimental Biology and Medicine
- 12 July 2011
The results indicate that osteonectin as a marker of stromal stem cells with osteogenic potential presumably plays an important role in atherogenesis and can serve as a new biomarker of stenosing atherosclerosis and calcinosis of coronary arteries.
The Generation of Superoxide Radicals by Cardiac Mitochondria and the Antioxidant Effect of the Water-Soluble Form of Ubiquinol-10
Ubiquinol-10 has been found to act as an efficient antioxidant within the physiological range of the lipid concentrations, while the magnitude and kinetic characteristics of the antiradical effect depend on the drug concentration.
[Effects of laser therapy on lipids and antioxidants in blood of patients with bronchial asthma].
- D. R. Rakitina, O. M. Urias'ev, V. I. Garmash, M. V. Ivanova, N. I. Krasnovid, A. Lebedev
- Medicine, BiologyTerapevticheskii arkhiv
When a group of 52 BA patients was compared to healthy donors by dienic conjugates, vitamin E and overall lipid-soluble antioxidants levels in the whole blood and plasma, these appeared higher in the asthmatics.
Calcium-dioxolene complexes: Rate constants of pyrocatechol oxidation in the presence of Ca2+
It has been shown that the prooxidant action of Ca2+ is related to an abrupt increase in the rate constant of comproportionation and a marked decrease in the rates of disproportionation of o-semiquinones.