Adrenal cytochrome-c-oxidase in neonatal and adult rats: sex differences.
Cytochrome-c-oxidase was measured in the adrenals of neonatal rats from 1 to 10 days of age and adult rats. No differences between the adrenals of female and male neonatal rats of the same age were found. Adult rats, on the contrary, showed sexual differences. Enzymatic activity was higher in males than in females. In the latter, there were important changes during the estrus cycle. The highest values were observed during diestrus and the lowest during estrus. These results provide new evidence of the close interrelations between gonads and adrenal glands during sexual maturation.
Piezzi
R S
RS
Instituto de Histologia y Embriologia (IHEM-CONICET), Facultad de Ciencias Médicas, UNC, Mendoza, Argentina.
Bianchi
R
R
Souto
M
M
Fogal
T
T
D000311:Adrenal Glands / Q000201:enzymology* / Q000502:physiology; D000367:Age Factors; D000704:Analysis of Variance; D000818:Animals; D003576:Electron Transport Complex IV / Q000378:metabolism*; D004971:Estrus; D005260:Female; D006066:Gonads / Q000502:physiology; D008297:Male; D051381:Rats; D012737:Sex Factors; D012741:Sexual Maturation
D003576:Electron Transport Complex IV