Abstract
Bisphenol P (BPP) is a structural analog of bisphenol A (BPA) and is increasingly used as a substitute of BPA in commercial and household applications. In recent years, BPP has been frequently detected in terrestrial and aquatic ecosystems. Very little epidemiological and experimental information are available on the toxicity potential of BPP in human and animal systems, which is very concerning in view of its increasing use. The current study evaluated the biochemical and histopathological effects of BPP in rats. The seven experimental groups (n = 5 rats/group) included BPA5 (5mg), BPA50 (50mg), BPA100 (100mg), BPP5 (5mg), BPP50 (50mg), and BPP100 (100mg) while the remaining one group served as untreated control. At the end of treatment, the organs (liver, kidney, heart, and lung) of rats were harvested for oxidative stress and histopathological analyses. A significant (p < .05) decrease was observed in the weight of the liver, lungs, and kidneys in the BPP100 group similar to the BPA100 group compared with the control group. Further, a significant (p < .05) decrease was also observed for concentrations of antioxidant enzymes (catalase, peroxidase, superoxide dismutase, and glutathione peroxidase) in the liver, lungs, kidneys, and heart at the highest two doses of BPP similar to the respective BPA groups compared with the control group. The two highest doses of BPP induced histopathological changes in the liver such as nuclei distortion, excessive necrosis of hepatocytes, nuclei shrinkage and pyknosis of cells with disrupted cell structure (BPP100), and cellular congestion and degeneration of hepatocytes (BPP50) similar to the two respective doses of BPA. The BPP treated groups also showed varying histopathological changes in kidney tissue, heart tissue, and lung tissue similar to BPA treated rats. In conclusion, the present study indicated that BPP has the potential to induce oxidative stress and alter the histomorphological architecture of different organs and is as deleterious as BPA.
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