Protective effects of hydro-alcoholic extract of Quercus brantii against lead-induced oxidative stress in the reproductive system of male mice

Document Type : Original Research Article


1 Department of Theriogenology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran

2 Department of Pathobiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran


Objective: Exposure to heavy metals such as lead (Pb) results in oxidative stress induction in the male reproductive system. Herbal medicine can be utilized as antioxidant agents against oxidative stress. Quercus brantii (QB) has shown antioxidant activity in previous studies. The aim of the present study was to evaluate effects of QB hydro-alcoholic extract against Pb-induced oxidative stress in the male mice reproductive system.
Materials and Methods: Forty-two NMRI adult male mice were randomly divided into 7 groups of 6 animals each. Group I was the control group that received no treatment. Group II was the sham group and received 0.2 ml distilled water. Groups III and IV received QB hydro-alcoholic extract 500 and 1000 mg/kg bw, respectively. Group V received Pb 1000 ppm/kg bw. Group VI and VII received Pb 1000 ppm/kg bw and QB extract 500 and 1000 mg/kg bw, respectively. All groups received treatment via oral gavage. After 35 days, sperm parameters (i.e. sperm motility, count and morphology) were evaluated. Levels of sex hormones including LH, FSH, and testosterone, total antioxidant capacity (TAC), superoxide dismutase (SOD) and malondialdehyde (MDA) were measured in animals’ serum.
 Results: Exposure to Pb negatively affected sperm parameters (i.e. sperm motility, count and morphology), decreased serum concentrations of sex hormones (i.e. LH, FSH, and testosterone), TAC and SOD activity but increased MDA levels. However, co-administration of 500 and 1000 mg/kg bw QB hydro-alcoholic extract and Pb considerably improved sperm parameters (i.e. sperm motility, count and morphology), increased sex hormones (i.e.LH, FSH, and testosterone), TAC, and SOD activity while decreased MDA levels in animals’ serum.
Conclusion: Administration of QB extracts (Low dose and high dose) is able to protect the male reproductive system of mice against Pb-induced oxidative stress.


Main Subjects

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