[Energy metabolism of isolated hepatocytes at various levels of oxidative phosphorylation uncoupling].
The energy metabolism changes in isolated hepatocytes at different levels of proton conductivity of cellular membranes were studied. The low doses of the uncoupler which increased hepatocyte respiration rate but did not markedly affect the mitochondrial potential caused: the reduction in total adenine nucleotide contents (ATP + ADP + AMP), the oxidation of mitochondrial NADH, the increase in the rates of glycogenolysis and net flux via phosphofructokinase without any changes in the rates of glucose, lactate and pyruvate accumulation. High doses of the uncoupler which eliminated completely oxidative phosphorylation decreased Atkinson's energy charge down to 0.5, reduced cytoplasmic NADH, induced a further increase in the glycogenolysis rate, increased the rates of glucose and lactate accumulation, heightened glucose-6-phosphate content and lowered contents of 3-phosphoglycerate and 2-oxoglutarate.
Toshchakov
V Iu
VIu
Morozova
G I
GI
Anishchenko
N A
NA
D000227:Adenine Nucleotides / Q000378:metabolism; D000818:Animals; D002258:Carbonyl Cyanide m-Chlorophenyl Hydrazone / Q000494:pharmacology; D004734:Energy Metabolism / Q000187:drug effects*; D005947:Glucose / Q000378:metabolism; D006019:Glycolysis; D007425:Intracellular Membranes / Q000378:metabolism; D007773:Lactates / Q000378:metabolism; D008930:Mitochondria, Liver / Q000378:metabolism*; D009243:NAD / Q000378:metabolism; D010085:Oxidative Phosphorylation; D010100:Oxygen / Q000378:metabolism; D010732:Phosphofructokinase-1 / Q000378:metabolism; D011773:Pyruvates / Q000378:metabolism; D051381:Rats
D000227:Adenine Nucleotides; D007773:Lactates; D011773:Pyruvates; D009243:NAD; D002258:Carbonyl Cyanide m-Chlorophenyl Hydrazone; D010732:Phosphofructokinase-1; D005947:Glucose; D010100:Oxygen
Energeticheskiĭ metabolizm izolirovannykh kletok pechenii pri razlichnykh urovniakh razobshcheniia okislitel'nogo fosforilirovaniia.