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  • Title: Effects of strontium fructose 1,6-diphosphate on expression of apoptosis-related genes and oxidative stress in testes of diabetic rats.
    Author: Tang XY, Zhang Q, Dai DZ, Ying HJ, Wang QJ, Dai Y.
    Journal: Int J Urol; 2008 Mar; 15(3):251-6. PubMed ID: 18304222.
    Abstract:
    OBJECTIVE: To investigate the effects of strontium fructose 1,6-diphosphate (FDP-Sr) on testicular dysfunction induced by diabetes. METHODS: Diabetes was induced by a single injection of streptozotocin (65 mg/kg, i.p.). After 28 days, therapy with three doses (50, 100, and 200 mg/kg per day, p.o.) of FDP-Sr was carried out for another 4 weeks. RESULTS: The rats exhibited morphological lesions of testes and significant decreases in serum testosterone levels after 2 months of diabetes. Testicular tissues of diabetic rats showed significantly increased malondialdehyde levels and declined glutathione peroxidase activity. Meanwhile, augmented DNA fragmentation was observed, along with downregulated Bcl-2 and upregulated Bax expressions at both mRNA and protein levels. FDP-Sr showed significant antioxidant effects in both in vitro and in vivo experiments, and significantly relieved apoptosis and the decline of serum testosterone caused by diabetes. CONCLUSIONS: Testicular injury and apoptosis induced by diabetes are partially attributed to the augmented oxidative stress in testicular tissue. FDP-Sr indirectly alleviates these pathologic alterations by suppressing the generation of reactive oxygen species.
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