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Strontium fructose 1, 6‐diphosphate alleviate cyclophosphamide‐induced oligozoospermia by improving antioxidant and inhibiting testicular apoptosis via FAS/FASL pathway

This study investigated the treatment effects of a new compound, strontium fructose 1, 6‐diphosphate (FDP‐Sr), in cyclophosphamide (CP)‐induced oligozoospermia. FDP‐Sr, with extra high‐energy supply, could reverse male hypogonadism in the testis. Male Wistar rats were randomly divided into three groups: control group (vehicle treated), CP group and CP + FDP‐Sr group. Both CP group and CP + FDP‐Sr groups were orally administered CP (20 mg kg−1) consecutively for the first 7 days to establish CP‐induced testicular toxic models. Subsequently, CP group was given orally distilled water per day, whereas CP + FDP‐Sr group was received FDP‐Sr (200 mg kg−1) for 49 days. Compared to the CP group, the FDP‐Sr group showed significantly increased levels of serum testosterone, testis relative weights and epididymal sperm counts in rats. In addition, rats treated by FDP‐Sr showed the recuperative activities of testicular marker enzymes and normalised levels of antioxidants in tissue. Testicular protection of FDP‐Sr was further demonstrated by enhancing expression of P450scc, reducing ability of FAS/FASL and generating cytoprotection in the histopathological study. FDP‐Sr appeared to possess an ability to attenuate CP‐induced reproduction toxicity via the activation of antioxidants and steroidogenesis enzymes, and alleviate oligozoospermia via inhibition of testicular apoptosis by FAS/FASL pathway.