Abstract
Bisphenol A (BPA) is a commonly used environmental toxicant, is easily exposed to the human body and causes testicular damage, sperm abnormalities, DNA damage and apoptosis, and interferes in the process spermatogenesis and steroidal hormone production along with obstruction in testes and epididymis development. Zinc (Zn), a potent regulator of antioxidant balance, is responsible for cellular homeostasis, enzymes and proteins activities during spermatogenesis for cell defence mechanisms in the testes. Selenium (Se) is required for spermatogenesis, antioxidant action and in the activities of different selenoproteins. Both Zn and Se are essential simultaneously for the proper regulation of spermatogenesis and sperm maturation as well as protection against chemical and disease-associated germ cell toxicity. Thus, the study aimed to understand the importance and beneficial effect of Zn and Se co-treatment against BPA-exposed testicular damage in rats. BPA 100 and 200 mg/kg/day was exposed through an oral gavage. Zn (3 mg/kg/day) i.p. and Se (0.5 mg/kg/day) i.p. were injected for 8 weeks. The testicular toxicity was evaluated by measuring body and organs weight, biochemical investigations, sperm parameters, testicular and epididymal histopathology, quantification DNA damage by halo assay, DNA breaks (TUNEL assay), immunohistochemistry and western blot. Results revealed that Zn and Se co-treatment ameliorated BPA-associated male gonadal toxicity in rat as revealed by decreased SGPT, SGOT and BUN levels in serum, reduced testes and epididymis tissue injury, DNA breaks, apoptosis, expressions of 8-OHdG, γ-H2AX and NFκB with an increased serum testosterone and catalase levels. These findings suggest that Zn and Se co-treatment could be a beneficial and protective option against BPA-exposed testicular and epididymal toxicity.
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Abbreviations
- BPA:
-
Bisphenol A
- COX:
-
Cyclooxygenase
- DMSO:
-
Dimethyl sulfoxide
- DPX:
-
Dibutyl phthalate in xylene
- ECL:
-
Enhanced chemiluminescence
- Fas (Apo-1):
-
Apoptosis antigen 1
- GD:
-
Gestation day
- IKK:
-
I kappa B kinase
- NDF:
-
Nuclear diffusion factor
- NFκB:
-
Nuclear factor kappa B
- PI3K:
-
Phosphatidylinositol triphosphate
- PND:
-
Post-natal day
- SGPT:
-
Serum glutamic-pyruvic transaminase (alanine aminotransferase)
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C. Sahu is thankful to UGC for providing research fellowship (ID: 328410).
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The institutional financial assistance was received (budget allotment no. NPLC) by the NIPER, S.A.S. Nagar, India.
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Chittaranjan Sahu conceived and conceptualize the study, performed the experiments, analyzed the data and wrote entire manuscript. G. B. Jena supervised research work and reviewed the manuscript. The authors declare that all data were generated in-house and that no paper mill was used.
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The animal study plan was duly approved by Institutional Animal Ethics Committee (IAEC) of the National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, India with approval no. IAEC/19/46). Animal experiments were conducted according to CPCSEA (Govt. of India) guidelines.
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Sahu, C., Jena, G. Combination treatment of zinc and selenium intervention ameliorated BPA-exposed germ cell damage in SD rats: elucidation of molecular mechanisms. Naunyn-Schmiedeberg's Arch Pharmacol (2024). https://doi.org/10.1007/s00210-024-03044-4
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DOI: https://doi.org/10.1007/s00210-024-03044-4