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Abstract Title:

Protective effects of garlic powder against potassium dichromate-induced oxidative stress and nephrotoxicity.

Abstract Source:

Food Chem Toxicol. 2008 Feb;46(2):619-27. Epub 2007 Sep 18. PMID: 17950512

Abstract Author(s):

José Pedraza-Chaverri, Paola Yam-Canul, Yolanda I Chirino, Dolores Javier Sánchez-González, Claudia María Martínez-Martínez, Cristino Cruz, Omar N Medina-Campos

Article Affiliation:

Facultad de Química, Departamento de Biología, Edificio F, Segundo Piso, Laboratorio 209, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 D.F., Mexico. pedraza@servidor.unam.mx

Abstract:

Potassium dichromate (K(2)Cr(2)O(7))-induced nephrotoxicity is associated with oxidative stress. In the present work the effect of garlic powder, a recognized antioxidant, on K(2)Cr(2)O(7)-induced nephrotoxicity and oxidative stress was studied. Rats were fed a 2% garlic powder diet for 1 month. A single injection of K(2)Cr(2)O(7) (15 mg/kg) to rats induced tubule interstitial damage and an increase in the following markers of renal injury 2 days later: blood urea nitrogen (4.6-fold), serum creatinine (9.7-fold), proteinuria (35.9-fold), urinary excretion of N-acetyl-beta-d-glucosaminidase (12.9-fold) and glutathione-S-transferase (2.3-fold) and a decrease of 65% in serum glutathione peroxidase activity. In addition, K(2)Cr(2)O(7) injection increased the following nitrosative and oxidative stress markers in kidney: 3-nitrotyrosine (1.9-fold), 4-hydroxy-2-nonenal (2.1-fold), malondialdehyde (1.8-fold) and protein carbonyl content (1.7-fold). It was found that garlic powder feeding was able to prevent by 44-71% the alterations in the markers of renal injury studied, by 55% the histological damage, and by 47-100% the increase in markers of oxidative and nitrosative stress. It is concluded that the ability of garlic powder to ameliorate K(2)Cr(2)O(7)-induced renal injury is associated with its antioxidant properties. Our data support the use of garlic powder as a renoprotective agent.

Study Type : Animal Study

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Sayer Ji
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