Abstract
We studied the protective effect of Satureja khuzestanica essential oil (SKEO) against damage caused by busulfan on testis in male mice. The NMRI mice (n = 40) were assigned to four groups including: G1: control, G2: treated with busulfan for 4 days (3.2 mg kg(-1)), G3: receive busulfan (4 days, 3.2 mg kg(-1)) and SKEO (28 days, 225 mg kg(-1)) at the same time, G4: pre-treated with SKEO (7 days, 225 mg kg(-1)) and subsequently cotreated with busulfan (4 days, 3.2 mg kg(-1)) and SKEO (28 days, 225 mg kg(-1)). The histological changes of testis were analysed using H&E staining. Sperm parameters, cytotoxic and apoptotic factors were also studied by computer-aided sperm analyzer, MTT and TUNEL assays respectively. Our results showed that SKEO pre-administration significantly improved all parameters of epididymal spermatozoa and decreased germinal epithelium destruction following busulfan chemotherapy. We also found lower MTT levels and TUNEL-positive cells in SKEO pre-treated groups. In conclusion, SKEO possesses beneficial effects on sperm parameters when taken before chemotherapy and continued during and after chemotherapy for a long time, than when used short-term coinciding with the chemotherapy. Our results support valuable data about the application of SKEO for protection against adverse effects of busulfan on male genital system in patients under chemotherapy.
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