[Electron microscopy morphometric analysis of the effect of immobilization stress on the structure of the myocardium in rats belonging to 2 age groups].
13 month-old and 25 month-old Wistar rats were exposed to immobilisation stress and compared with a control group of animals. The most impressive influence was found in mitochondria but there were not any significant changes of myofibrils. The number of mitochondria decreased significantly as well as their relative cytoplasmic volume. Absolute mitochondrial volume increased simultaneously. Difference in age of animals resulted in greater mitochondrial sensibility to stress condition in 25 month-old rats.
D000375:Aging; D000818:Animals; D008297:Male; D009206:Myocardium / Q000648:ultrastructure*; D051381:Rats; D011919:Rats, Inbred Strains; D012149:Restraint, Physical; D013312:Stress, Physiological / Q000209:etiology / Q000473:pathology*
Elektrónovomikroskopická morfometrická analýza vplyvu imobilizacného stresu na struktúru myokardu potkanov v dvoch vekových skupinách.