[Post-natal development of interstitial Leydig cells in rat testicle].
The existence of different stages of postnatal activities in Leydig's cells, as demonstrated in hormone studies, appears to be fully admitted. Such occurrence should have repercussions on the population of those elements primarily entrusted with their production, either in the number of elements or their activities. The present article studies Leydig's cells rate in Wistar rats over the postnatal stage, from birth to adulthood. During this postnatal stage, Leydig's cells population does not actually disappear. There is a decrease immediately after birth and up to the age of 21 days when gonadal drop occurs in this species, and from there on a considerable increase takes place for in a two-month period they multiply by ten. On the other hand, it is highly surprising the great speed of testicle growth up to the age of 60 days, reaching maximum size at 90 days. The increase is due to the growth of the tubular compartment.
Quiros
A
A
Departamento de Biología Celular y Antomía Patológica, Universidad de Cádiz.
López
A
A
Larran
J
J
Castiñeiras
J
J
Vilches
J
J
D000375:Aging; D000818:Animals; D007985:Leydig Cells; D008297:Male; D051381:Rats; D017208:Rats, Wistar / Q000033:anatomy & histology*; D013737:Testis / Q000166:cytology* / Q000254:growth & development*
Desarrollo postnatal de las células intersticiales de Leydig en el testículo de rata.