[Sexual dimorphism in rat submaxillary gland].
The existence of sexual dimorphism (SDM) in tubules and acini of the submaxillary gland was investigated in male and female 60 day-old Wistar rats. Conventional histology was followed by evaluation of 1) Percentage of area occupied by tubules, acini, and other tissues and 2) Tubular area, employing a semi-automatic image analyser. The granular tubules of male rats were larger than those of females. This statistically significant difference indicates the existence of SDM from a morphological viewpoint. Castration seems to abolish these differences by inducing involution of tubular tissue in males. Whereas treatment with testosterone seems to reconstitute tubular tissue in castrated males, a similar dose of estradiol benzoate elicits a reduction in tubular size in ovariectomized females.
Rins de David
M L
ML
Universidad de Córdoba e I.N.I.M.E.C. (CONICET), Argentina.
Caceres
A
A
Goldraij
A
A
D000818:Animals; D004958:Estradiol / Q000494:pharmacology; D005260:Female; D008297:Male; D009919:Orchiectomy; D010052:Ovariectomy; D051381:Rats; D011919:Rats, Inbred Strains; D012727:Sex Characteristics; D013363:Submandibular Gland / Q000033:anatomy & histology*; D013739:Testosterone / Q000494:pharmacology
D013739:Testosterone; D004958:Estradiol
Contribución al estudio del dimorfismo sexual en glandula submaxilar de rata.