6533b835fe1ef96bd129ea65

RESEARCH PRODUCT

Effects of training on regional substrate oxidation in the hearts of ageing rats.

Heikki KainulainenJyrki Komulainen

subject

Malemedicine.medical_specialtyAgingCitrate (si)-SynthaseElectron Transport Complex IVchemistry.chemical_compoundLactate dehydrogenaseInternal medicinePhysical Conditioning AnimalmedicineCitrate synthaseCytochrome c oxidaseAnimalsPalmitoylcarnitinebiologyL-Lactate DehydrogenaseMyocardiumBody WeightGlutamate receptorHeartRats Inbred StrainsOrgan SizeIsocitrate DehydrogenaseRatsmedicine.anatomical_structureIsocitrate dehydrogenaseEndocrinologychemistryAgeingVentriclebiology.proteinGeriatrics and GerontologyOxidation-Reduction

description

23-month-old male rats were trained by running for 20 weeks. The oxidation rates of succinate, glutamate+malate, palmitoylcarnitine, and pyruvate and the activities of lactate dehydrogenase, citrate synthase, isocitrate dehydrogenase and cytochrome oxidase were measured in the subendocardium and subepicardium and in the right ventricle. Regional differences of substrate oxidation rates in the myocardium of old sedentary or trained rats were less than in young rats, suggesting that regional differences in the cardiac work load disappear during ageing. Training did not improve oxidation rates, in contradiction to some previous results.

yearjournalcountryeditionlanguage
1989-01-01
http://europepmc.org/abstract/med/2560987