Abstract
The purpose of this study was to investigate the effects of zinc and melatonin administration on lipid peroxidation in various tissues in DMBA-induced breast cancer in female rats. A total of 42 recently weaned Wistar rats were divided into 5 groups in the study: Group 1 (Control), Group 2 (DMBA Control), Group 3 (DMBA+Zinc), Group 4 (DMBA+Melatonin), Group 5 (DMBA+Melatonin, and Zinc). MDA (malondialdehyde) and GSH (glutathione) levels were determined via the spectrophotometric method in the lung, liver, spleen, pancreas, and kidney tissue samples taken from experimental animals. The highest lung, liver, spleen, pancreas, and kidney tissue MDA levels were obtained in the DMBA-induced breast cancer group control group (G2) (p<0.05). MDA levels in DMBA+Zinc (G3), DMBA+Melatonin (G4), and DMBA+Melatonin and Zinc (G5) were significantly lower than group 2 (p<0.05). Similarly, lung, liver, spleen, pancreas, and kidney tissue GSH levels of DMBA+Zinc (G3), DMBA+Melatonin (G4), and DMBA+Melatonin and Zinc (G5) were significantly higher than that of Group 2 (p<0.05). The findings of the study indicated that increased lung, liver, spleen, pancreas, and kidney damage in DMBA-induced breast cancer is suppressed with the supplementation of zinc, melatonin, and combined zinc and melatonin.
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