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Journal of Environmental Pathology, Toxicology and Oncology
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ISSN Imprimir: 0731-8898
ISSN En Línea: 2162-6537

Journal of Environmental Pathology, Toxicology and Oncology

DOI: 10.1615/JEnvironPatholToxicolOncol.2013006923
pages 177-187

Reversal of Lead-Induced Toxicity Due to the Effect of Antioxidants

Samta Sharma
Reproductive Biology and Toxicology Laboratory, School of Studies in Zoology, Jiwaji University, Gwalior-474011, India
Sadhana Shrivastava
Reproductive Biology and Toxicology Labora¬tory, UNESCO Satellite Center of Trace Element Research, School of Studies in Zoology, Jiwaji University, Gwalior 474011, India
Sangeeta Shukla
School of Studies in Zoology, Jiwaji University, Gwalior 474011, India

SINOPSIS

This study was designated to evaluate the protective effect of glutathione (GSH) and N-acetyl cysteine (NAC) in reducing the concentration of lead acetate in blood and soft tissues (liver, kidney, and brain) and their ability to restore altered hematopoietic, hepatic, renal, and other biochemical variables that are indicative of tissue oxidative stress in male rats.
Male Wistar rats (150 ± 10 g) were randomly divided into 6 groups. Group 1 served as control. Group 2 served as experimental control was administered lead acetate (50 mg/kg intraperitoneally) for 3 days. Group 3 and 4 served as therapeutic controls. Animals in groups 5 and 6 received reduced GSH (1mg/kg intraperitoneally) and NAC (50 mg/kg orally) for 3 days after the administration of lead acetate, as in group 2.
The levels of hepatic and renal markers such as alanine aminotransferase, aspartate aminotransferase, triglycerides, cholesterol, urea, and uric acid were significantly increased (P ≤ 0.05) following administration of lead acetate. Administration of GSH and NAC provided significant protection to thiobarbituric acid reactive substances levels and reduced GSH content in tissues. On the other hand, significant recovery in lead-sensitive biochemical indices, like δ-aminolevulinic acid dehydratase, δ-aminolevulinic acid, and lead concentration in blood and soft tissues also were observed. It was concluded that NAC provided maximum protection compared with reduced GSH.


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