Open AccessOXIDATIVE STRESS IN RAT LIVER AND KIDNEY DUE TO CHRONIC EXPOSURE TO A MIXTURE OF ARSENIC, CADMIUM, AND LEAD: PROTECTIVE ROLE OF SELENIUM AND ZINC
Author(s) -
Tapasi Bhattacharjee,
Soma Choudhuri,
Dipayan Choudhuri
Publication year - 2017
Publication title -
asian journal of pharmaceutical and clinical research
Language(s) - English
Resource type - Journals
eISSN - 2455-3891
pISSN - 0974-2441
DOI - 10.22159/ajpcr.2017.v10i7.18477
Subject(s) - chemistry , glutathione peroxidase , alkaline phosphatase , oxidative stress , sodium selenate , malondialdehyde , cadmium chloride , medicine , selenium , kidney , endocrinology , cadmium , glutathione , superoxide dismutase , glutathione reductase , biochemistry , enzyme , biology , organic chemistry
Objective: This study assessed the effect of chronic exposure to a mixture of heavy metals arsenic (As), cadmium (Cd), and lead (Pb) at a very low environmentally relevant dose along with the effect of coadministration of metallic antioxidants selenium (Se) and zinc (Zn) on hepatic and renal function and oxidative stress parameters in the liver and kidney of female albino rats.Methods: A total of 24 female albino rats were divided into four groups. Animals of the control group received only distilled water. The treated group received mixture of heavy metals As (38.0 ppm), Cd (9.8 ppm), and Pb (22.0 ppm)/kg b.w./day. The supplemented groups received either sodium selenate (10 ppm) or Zn chloride (20 ppm) along with mixture of heavy metals. The treatment period was 90 consecutive days.Results: There was a significant increase in serum glucose, cholesterol, urea and creatinine and decrease in protein and albumin levels in the rats treated with mixture of heavy metals. The activities of serum enzymes, serum glutamic oxaloacetic transaminase and serum glutamic pyruvic transaminase and acid phosphatase and alkaline phosphatase in the liver and kidney of treated animals were also increased. The activities of different oxidative enzymes catalase, superoxide dismutase, glutathione reductase, glutathione peroxidase, and the levels of glutathione reduced significantly and level of malondialdehyde increased in rats treated with metal mixture. Histopathology of liver and kidney tissues exhibited toxic symptoms in treated animals. All the deleterious effects were reversed by cotreatment with either Se or Zn.Conclusion: Both Se and Zn provided protection against oxidative damage and hepatotoxic and nephrotoxic effects produced due to exposure to a mixture of heavy metals As, Cd, and Pb at a very low environmentally relevant dose in female rats for 3 months.