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001-es BibID:	BIBFORM038719
Első szerző:	Bácsi Attila (immunológus)
Cím:	Localization of superoxide anion production to mitochondrial electron transport chain in 3-NPA-treated cells / Bacsi Attila, Woodberry Mitchell, Widger William, Papaconstantinou John, Mitra Sankar, Peterson Johnny W., Boldogh Istvan
Dátum:	2006
ISSN:	1567-7249
Megjegyzések:	3-Nitropropionic acid (3-NPA), an inhibitor of succinate dehydrogenase (SDH) at complex II of the mitochondrial electron transport chain induces cellular energy deficit and oxidative stress-related neurotoxicity. In the present study, we identified the site of reactive oxygen species production in mitochondria. 3-NPA increased O2- generation in mitochondria respiring on the complex I substrates pyruvate+malate, an effect fully inhibited by rotenone. Antimycin A increased O2- production in the presence of complex I and/or II substrates. Addition of 3-NPA markedly increased antimycin A-induced O2- production by mitochondria incubated with complex I substrates, but 3-NPA inhibited O2- formation driven with the complex II substrate succinate. At 0.6 microM, myxothiazol inhibits complex III, but only partially decreases complex I activity, and allowed 3-NPA-induced O2- formation; however, at 40 microM myxothiazol (which completely inhibits both complexes I and III) eliminated O2- production from mitochondria respiring via complex I substrates. These results indicate that in the presence of 3-NPA, mitochondria generate O2- from a site between the ubiquinol pool and the 3-NPA block in the respiratory complex II.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Mitochondrion. - 6 : 5 (2006), p. 235-244. -
További szerzők:	Woodberry, Mitchell Widger, William Papaconstantinou, John Mitra, Sankar Peterson, Johnny W. Boldogh István
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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