Influence of age on the production of rat spermatozoa, on their concentration in the cauda epididymidis, and on FSH, LH and testosterone plasma levels.

Abstract:

:Testis samples were taken from young (3 months), middle-aged (12 months) and aged (24 months) male rats, processed, stained and examined via a light microscope. There were no prominent abnormal germinal epithelium and interstitial tissue. However, the aging process promoted a significant decrease in the mean amount of spermatids 19 per cross tubular section, and in the amount of Sertoli cells per cross tubular section in 24-month-old rats. The concentration of spermatozoa in the cauda epididymidis showed a gradual decrease from 3 to 12 and 24 months. After hCG injection all groups of animals exhibited an increase in plasma testosterone level, although the response was smaller in 12- and 24-month animals compared to the young mature (3 months) ones.

journal_name

Histol Histopathol

authors

Carvalho TL,Favaretto AL,Komesu MC,Lopes RA,Petenusci SO,Silva-Netto CR

subject

Has Abstract

pub_date

1988-10-01 00:00:00

pages

413-7

issue

4

eissn

0213-3911

issn

1699-5848

journal_volume

3

pub_type

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