Degenerative changes in spermatogonia are associated with loss of glucose transporter (Glut 3) in abdominal testis of surgically induced unilateral cryptorchidism in rats.

Abstract:

:Expression of facilitative glucose transporters (Glut 1, 2 and 3) was examined by Western blot analyses 10, 20 and 30 days following surgically induced unilateral abdominal cryptorchidism. The cryptorchid testes exhibited marked degenerative changes in the seminiferous tubules and spermatogonia, impaired and incomplete spermatogenesis and lack of spermatozoa in the lumen. Immunoblotting of testis proteins with Glut transporter antibodies revealed only the presence of Glut 2 and 3 proteins. Glut 2 expression in abdominal testis was increased (45%, 67%, and 40% at 10, 20 and 30 days, respectively) but no significant change was observed in contralateral scrotal testis. Glut 3 expression was reduced by 85-95% compared with contralateral scrotal testis. A significant decrease in Glut 3 levels in abdominal testis was accompanied by an increase in scrotal testis Glut 3 content (80%, 144% and 212% at 10, 20 and 30 days, respectively) compared to age matched control rats. These results suggested that the degenerative changes in abdominal testis may be associated with decreased Glut 3 mediated glucose transport in seminiferous tubules and spermatogonia.

authors

Farooqui SM,Al-Bagdadi F,O'Donnell JM,Stout R

doi

10.1006/bbrc.1997.6954

subject

Has Abstract

pub_date

1997-07-18 00:00:00

pages

407-12

issue

2

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(97)96954-0

journal_volume

236

pub_type

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