Objective: To evaluate the potential contribution of glycyrrhizin (GLZ) to mitigate the testicular toxicity linked to cisplatin (CIS) intoxication.
Methods: 40 mature male Wistar albino rats (Rattus norvegicus albinus) were randomly divided into 4 equal groups (n = 10) for 60 days: the control group, CIS-treated group (single dose of 7 mg/kg, IP), GLZ-treated group (25 mg/kg, PO), and GLZ plus CIS-treated group. Blood and testis samples were examined using biochemical, histological, and immunohistochemical techniques. Semen samples were also obtained, and any abnormalities were reported.
Results: Serum follicle-stimulating hormone, luteinizing hormone, and testosterone levels were all markedly reduced by CIS. Oxidative stress and a significant reduction in levels of the antioxidant enzymes glutathione peroxidase, superoxide dismutase, and catalase were linked to CIS. Immunohistochemically, CIS showed diffuse, significantly positive immunolocalizations against the anti-caspase 3 antibody, indicating widespread apoptosis within the testicular parenchyma. Histopathologically, CIS showed diffuse coagulative necrosis of spermatogenic cells, necrotic Sertoli cells, intertubular edema, and Leydig cell hyperplasia. Moreover, CIS revealed a noteworthy increase in sperm abnormalities. Pre-coadministration and posttreatment with GLZ mitigated the majority of these detrimental consequences, and serum levels of antioxidant enzymes, luteinizing hormone, follicle-stimulating hormone, and testosterone were significantly elevated.
Conclusions: Glycyrrhizin has been proven to be a strong antioxidant as well as antiapoptotic and cytoprotective against CIS testicular damage.
Clinical Relevance: The described model is a tool to evaluate the testicular protective impact of GLZ.
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