[Serum iodothyronine concentrations and properties of mitochondria phosphorylative oxidations in old rats].
Serum concentrations of T4 and T3 in 2 year-old Rats were decreased by about 30% compared to 2 month-old animals, but rT3 was similar. Activities of old Rats' liver mitochondria were near those of young thyroidectomized animals. Low circulating T3 partly explains metabolic changes observed during senescence.
D000375:Aging; D000818:Animals; D008297:Male; D008930:Mitochondria, Liver / Q000201:enzymology / Q000378:metabolism*; D010085:Oxidative Phosphorylation; D010088:Oxidoreductases / Q000378:metabolism; D051381:Rats; D013970:Thyronines / Q000097:blood*; D014284:Triiodothyronine / Q000097:blood; D014285:Triiodothyronine, Reverse / Q000097:blood
D013970:Thyronines; D014284:Triiodothyronine; D014285:Triiodothyronine, Reverse; D010088:Oxidoreductases
Concentrations des iodothyronines sériques et propriétés des oxydations phosphorylatives des mitochondries chez le rat àgé.