title: Blood mononuclear cells energy metabolism response to muscular exercise.
abstract: In a study of 4 enzymatic activities in human blood mononuclear cells before and immediately after standard maximal exercise test (25 min) on treadmill we noted: (1) a significant decrease in the activity of the pyruvate dehydrogenase complex (PDHc); (2) a significant increase in the activity of the citrate synthase (CS); and (3) no significant changes in the activities of cytochrome c oxydase and succinate cytochrome reductase. Although non-specifically stimulated (antigen or even mitogen), the blood mononuclear cells responded metabolically to muscular exercise. Pyruvate dehydrogenase (PDHc) activity of blood mononuclear cells appeared to decrease via enzyme interconversion regulation of PDHc. It is not known if these changes can be linked to the studies indicated altered immune function after a single bout of exercise.
authors.affiliation: Laboratoire de Physiologie des Adaptations, Université Paris V, France.
authors.forename: A
authors.initials: A
authors.lastname: Ferry
authors.forename: C
authors.initials: C
authors.lastname: Marsac
authors.forename: A
authors.initials: A
authors.lastname: Duvallet
authors.forename: M
authors.initials: M
authors.lastname: Rieu
mesh_terms: D000328:Adult; D002950:Citrate (si)-Synthase / Q000378:metabolism; D003576:Electron Transport Complex IV / Q000378:metabolism; D004734:Energy Metabolism; D015444:Exercise / Q000502:physiology*; D006801:Humans; D009000:Monocytes / Q000201:enzymology*; D009132:Muscles; D011768:Pyruvate Dehydrogenase Complex / Q000378:metabolism; D013384:Succinate Cytochrome c Oxidoreductase / Q000378:metabolism
chemical_list: D011768:Pyruvate Dehydrogenase Complex; D013384:Succinate Cytochrome c Oxidoreductase; D003576:Electron Transport Complex IV; D002950:Citrate (si)-Synthase