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- W2051200345 abstract "The effect of Prudhoe Bay crude oil (PBCO) and its different fractions [aliphatic, aromatic, heterocyclic (NOS)] on the bioenergetic functions of isolated rat liver mitochondria were studied. A DMSO extract of PBCO inhibited state 3 respiration (in the presence of ADP) with either succinate or β-hydroxybutyrate as substrate. The ascorbate-TMPD dependent state 3 respiration was not affected. Succinate dehydrogenase and β-hydroxybutyrate dehydrogenase activities were also lost in the presence of the PBCO extract suggesting that inhibition of state 3 respiration may be due to blockage of the electron transport chain. Stimulation of state 4 respiration (in the absence of ADP) and of the oligomycin sensitive ATPase activity by the PBCO extract was observed. Fractionation of PBCO indicated that the aromatic fraction was mainly responsible for its inhibitory effects. By comparison, the heterocyclic fraction had weak inhibitory properties while the aliphatic fraction was essentially inactive. It is concluded that the aromatic components of PBCO inhibit mitochondrial respiration and oxidative phosphorylation mainly through impairment of the mitochondrial membrane and inhibition of β-hydroxybutyrate and succinate dehydrogenase supported electron transfer activities of the respiratory chain." @default.
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- W2051200345 date "1986-12-15" @default.
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- W2051200345 title "Mechanisms of petroleum hydrocarbon toxicity: Studies on the response of rat liver mitochondria to Prudhoe Bay crude oil and its aliphatic, aromatic and heterocyclic fractions" @default.
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- W2051200345 doi "https://doi.org/10.1016/0300-483x(86)90004-1" @default.
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