Journal
JOURNAL OF VETERINARY MEDICAL SCIENCE
Volume 67, Issue 4, Pages 453-456Publisher
JAPAN SOC VET SCI
DOI: 10.1292/jvms.67.453
Keywords
ischemia/reperfusion; nitric oxide synthase; testis
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To elucidate the roles of both constitutive endothelial nitric oxide synthase (eNOS) and neuronal NOS (nNOS), and inducible NOS (iNOS) in acute experimental testicular torsion, the expression of iNOS and constitutive eNOS and nNOS were studied in the rat testis with ischemia/reperfusion (I/R) injury. Western blot analysis showed that all three isoforms of NOS increased significantly at 2448 hr after UR and declined slightly thereafter. After I/R, immunoreactivity for both iNOS and nNOS was detected, mainly in the interstitial space around damaged tubules, while germ cells in the damaged tubules were immunostained intensely for eNOS. We postulate that increased expression of the three NOS isoforms in the testis after I/R, which might generate nitric oxide, affects delayed germ cell death following I/R via paracrine or autocrine fashion.
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