Clinical and Experimental Reproductive Medicine

The Korean Society for Reproductive Medicine (대한생식의학회)
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Effect of L-carnitine on the expression of the apoptotic genes Bcl-2 and Bax

  • Vardiyan, Reyhane (Department of Biology and Anatomy, Shahid Sadoughi University of Medical Sciences) ;
  • Ezati, Daniyal (Department of Biology and Anatomy, Shahid Sadoughi University of Medical Sciences) ;
  • Anvari, Morteza (Research and Clinical Center for Infertility, Shahid Sadoughi University of Medical Sciences) ;
  • Ghasemi, Nasrin (Department of Biology and Anatomy, Shahid Sadoughi University of Medical Sciences) ;
  • Talebi, Alireza (Department of Biology and Anatomy, Shahid Sadoughi University of Medical Sciences)
  • Received : 2019.11.24
  • Accepted : 2020.04.03
  • Published : 2020.09.30
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Abstract

Objective: The genes Bcl-2 and Bax play important roles in apoptosis. Many studies have shown that formalin has a strong deleterious effect on male fertility and can induce apoptosis. L-carnitine has been reported to potentially reverse the negative effects of formalin, leading to improved spermatogenesis. In this study, we examined the levels of expression of Bcl-2 and Bax in mice treated with formalin and L-carnitine. Methods: Thirty adult BALB/c mice were categorized into three groups. The mice in the control group (n = 10) were not injected with any substance. The mice in the second group (n = 10) received 10 mg/kg of formalin daily via an intraperitoneal injection, while those in the final group (n = 10) were intraperitoneally injected daily with a dose of 10 mg/kg of formalin and 100 mg/kg of L-carnitine. All mice were kept in isolated cages for 31 days. Results: The expression of Bax was significantly higher in the formalin-treated mice than in the mice of the control group, while the expression of Bcl-2 was significantly lower in the formalin-treated mice than in the control mice. Additionally, relative to control mice, Bcl-2 expression increased and Bax expression decreased in the mice administered both formalin and L-carnitine. Conclusion: In this study, L-carnitine was shown to augment Bcl-2 expression and to reduce Bax expression, indicating that this compound may inhibit apoptosis. Due to its positive effects, L-carnitine can be used as a prophylactic treatment for people who routinely come into direct contact with formalin as an occupational hazard.

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