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Titolo:
Comparative efficiency of antioxidants upon the protection of bacterial plasma membrane from active forms of oxygen
Autore:
Ivanov, AY; Novoselov, VI; Gavryushkin, AV; Fesenko, EE;
Indirizzi:
Russian Acad Sci, Inst Cell Biophys, Pushchino 142290, Moscow Region, Russia Russian Acad Sci Pushchino Moscow Region Russia 142290 cow Region, Russia State Res Ctr Appl Microbiol, Obolensk 142279, Moscow Region, Russia StateRes Ctr Appl Microbiol Obolensk Moscow Region Russia 142279 Russia
Titolo Testata:
BIOFIZIKA
fascicolo: 4, volume: 45, anno: 2000,
pagine: 660 - 665
SICI:
0006-3029(200007/08)45:4<660:CEOAUT>2.0.ZU;2-J
Fonte:
ISI
Lingua:
RUS
Soggetto:
RAT OLFACTORY EPITHELIUM; SECRETORY PROTEIN; ERYTHROCYTES; DAMAGE;
Keywords:
bacterial plasma membrane; hydroxyl radical OH; antioxidants;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Ivanov, AY Russian Acad Sci, Inst Cell Biophys, Pushchino 142290, Moscow Region, Russia Russian Acad Sci Pushchino Moscow Region Russia 142290 Russia
Citazione:
A.Y. Ivanov et al., "Comparative efficiency of antioxidants upon the protection of bacterial plasma membrane from active forms of oxygen", BIOFIZIKA, 45(4), 2000, pp. 660-665

Abstract

The effect of hydroxyl radicals OH. generated by the decomposition of H2O2by Fe2+ ions (Fenton reaction) on the barrier properties of plasma membranes of Escherichia coli cells K-12 was studied by electroorientation spectroscopy. It was found that the administration of hydrogen peroxide led to thedisturbance of the barrier properties of plasma membranes only when the cells were preincubated with Fe2+ ions and their constant concentration in the system was maintained by ascorbate or dithiotreitol (150-500 muM) The extent of the toxic action on plasma membranes depended on the concentration of reacting elements and the substance used as a reducer Fe2+. The efficiency of protection of antioxidants of different classes (enzymic, SH-containing, and phenolic compounds) against the toxic action of hydroxyl radicals onplasmatic membranes was shown.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 00:44:10