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Aim Zinc is known as an essential trace element and has antioxidant functions. This study was planned to investigate the effects of zinc on oxidative stress induced by ethanol in the rat liver tissue. Methods: Thirty-nine male rats were divided into four groups as control, ethanol (EtOH), zinc (Zn), ethanol plus zinc (EtOH+Zn). The control group (n=10) were injected intraperitoneally (i.p.) with 0.9% saline, EtOH group (n=10) with 2g kg/day ethanol, Zn group (n=10) received orally, ZnSO4.7H2 O at a dose of 7 mg kg/day and EtOH+Zn group (n=9) received zinc (orally) and ethanol (i.p.). On the 13th day, rats were euthanized. Liver tissues were removed and malondialdehyde (MDA), advanced oxidation protein products (AOPP), superoxide dismutase (SOD), glutathione peroxidase (GPx), glutathione reductase (GR), and glutathione-S-transferase (GST) activities were measured. Tissue zinc levels were determined. Histological analyses of liver tissue specimens were also performed. Results: In EtOH group MDA levels, GPx, SOD activities increased compared with control group. In accordance with histological findings, ethanol induced oxidative stress. But AOPP levels decreased in EtOH group due to supressive effect of ethanol on neutrophil activation and reactive oxygen species (ROS) production. In EtOH+Zn group, MDA, AOPP levels and GPx, SOD activities significantly changed. Besides, histological findings showed that zinc supplementation reduced oxidative stress. But in healthy rats MDA levels increased due to ROS mediated zinc damage. Conclusion: Zinc supplementation was found to offer protection against ethanol-induced liver damage and oxidative stress in rats. However, zinc might increase oxidative stress in healthy rats. [ABSTRACT FROM AUTHOR]

In the past two decades, oxidative stress (OS) has drawn a lot of interest due to the revelation that individuals with many persistent disorders including diabetes, polycystic ovarian syndrome (PCOS), cardiovascular, and other disorders often have aberrant oxidation statuses. OS has a close interplay with PCOS features such as insulin resistance, hyperandrogenism, and chronic inflammation; there is a belief that OS might contribute to the development of PCOS. PCOS is currently recognized as not only one of the most prevalent endocrine disorders but also a significant contributor to female infertility, affecting a considerable proportion of women globally. Therefore, the understanding of the relationship between OS and PCOS is crucial to the development of therapeutic and preventive strategies for PCOS. Moreover, the mechanistic study of intracellular reactive oxygen species/ reactive nitrogen species formation and its possible interaction with women's reproductive health is required, which includes complex enzymatic and non-enzymatic antioxidant systems. Apart from that, our current review includes possible regulation of the pathogenesis of OS. A change in lifestyle, including physical activity, various supplements that boost antioxidant levels, particularly vitamins, and the usage of medicinal herbs, is thought to be the best way to combat this occurrence of OS and improve the pathophysiologic conditions associated with PCOS. [ABSTRACT FROM AUTHOR]