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Article Publish Status: FREE
Abstract Title:

Chronic fluoride toxicity and myocardial damage: antioxidant offered protection in second generation rats.

Abstract Source:

Toxicol Int. 2011 Jul ;18(2):99-104. PMID: 21976813

Abstract Author(s):

Mahaboob P Basha, N S Sujitha

Article Affiliation:

Department of Zoology, Bangalore University, Bangalore - 560 056, India.

Abstract:

This experiment was designed to investigate the extent of peroxidative changes and histological alterations in the myocardium of rats exposed to high fluoride for two generations, in addition to ameliorative role of selenium and vitamin E on the above indices. Adult albino Wistar rats were given fluoride through drinking water (200 ppm F) and maintained subsequently for two generations, while they were exposed to fluoride throughout the experiment. Fluoride treatment significantly increased the lipid peroxidation and decreased the activity of antioxidant enzymes, viz., catalase, superoxide dismutase, and glutathione level in auricle and ventricle regions of the heart. Decreased feed and water consumption, organ somatic index and marginal drop in body growth rate were observed. Decreased antioxidant enzymes and increased malondialdehyde levels might be related to oxidative damage that occurs variably in the myocardium of rats. Biochemical changes were supported by the histological observations, which also revealed that chronic exposure to fluoride causes damage to the myocardium. Results of this study can be taken as an index of cardio-toxicity in rats exposed to water fluoridation. Further, oral supplementation of selenium and vitamin E not only inhibited oxidative stress but also enhanced the activities of antioxidant enzymes. Administration of antioxidants during fluoride exposure significantly overcame cardiac fluoride toxicity and therefore may be a therapeutic strategy for fluorotic victims.

Study Type : Animal Study
Additional Links
Pharmacological Actions : Cardioprotective : CK(1596) : AC(409)
Problem Substances : Fluoride : CK(405) : AC(87)
Adverse Pharmacological Actions : Cardiotoxic : CK(722) : AC(96)

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