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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Asian+J+Androl
2017 ; 19
(5
): 567-572
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Vitamin B(12)-induced spermatogenesis recovery in cimetidine-treated rats: effect
on the spermatogonia number and sperm concentration
#MMPMID27568998
Beltrame FL
; Sasso-Cerri E
Asian J Androl
2017[Sep]; 19
(5
): 567-572
PMID27568998
show ga
The H2-receptor antagonist cimetidine is an antiulcer drug also used for the
treatment of cancer due to its antiangiogenic effect. However, this drug has
caused structural changes in the seminiferous tubules. Vitamin B12 has been used
as a therapeutic agent for the treatment of male infertility. The supplementation
of rats with vitamin B12 during cimetidine treatment has recovered the damaged
seminiferous tubules, but how this vitamin restores the seminiferous epithelium
has not been clarified. In this study, we evaluated whether vitamin B12 improves
the number of spermatogonia, spermatocytes, and sperm concentration in
cimetidine-treated rats. Adult male rats were treated for 50 days as follows:
cimetidine group received 100 mg kg-1 b.w. of cimetidine, cimetidine-B12 group
received cimetidine and 3 ?g of vitamin B12-hydroxocobalamin, B12 group received
only 3 ?g of vitamin, and control group received saline. Sperm concentration was
calculated and historesin-embedded testes sections were used for the quantitative
analyses of spermatogonia (A; In/B) and spermatocytes. TUNEL method and PCNA
immunofluorescence were performed. Cimetidine caused a significant reduction in
sperm concentration. TUNEL-positive spermatogonia and spermatocytes were
correlated to a significant reduction in the number of these cells. In
cimetidine-B12 group, sperm concentration was higher than cimetidine group and a
significant increase in the number of spermatogonia (stages II-VI) was correlated
to a high incidence of PCNA-immunolabeled spermatogonia and spermatocytes. The
results show that the supplementation of rats with vitamin B12 during cimetidine
treatment increases sperm concentration and exerts a potential effect in the
recovery of spermatogonia and spermatocytes.