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Naringenin; a bioflavonoid, impairs the reproductive potential of male mice.

Present study analyzed the effect of naringenin, a bioflavonoid, on male reproductive function in adult mouse, after intraperitoneal treatment with varying concentrations of naringenin (2, 8 and 20 mg/kg b.wt.) for two weeks. Naringenin increased the generation of reactive oxygen species and lipid peroxidation in the testis with concomitant decrease in sperm count and motility in a dose-dependent manner. Activities of antioxidant enzymes catalase, superoxide dismutase, glutathione peroxidase and levels of reduced glutathione were found to be decreased in a dose-dependent manner. Also, the levels of oxidized glutathione were increased leading to a shift in redox ratio. Naringenin treatment also led to a dose-dependent increase in the mRNA expression of c-jun, c-fos and NF-κB. The testicular histomorphology was also altered dose dependently. Additionally, the number of apoptotic germ cells increased with increasing doses of naringenin as evident from acridine orange/ethidium bromide costaining and JC-1 staining. In conclusion, our study reveals that naringenin despite being a potent antioxidant with numerous important biological functions may also act as pro-oxidant, thus causing damaging effects in the testicular tissue.

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