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Abstract Title:

Effects of vanadium(V) and/or chromium(III) on L-ascorbic acid and glutathione as well as iron, zinc, and copper levels in rat liver and kidney.

Abstract Source:

J Toxicol Environ Health A. 2007 Apr 15;70(8):696-704. PMID: 17365624

Abstract Author(s):

Agnieszka Scibior, Halina Zaporowska

Article Affiliation:

Department of Cell Biology, Institute of Environmental Protection, John Paul II Catholic University of Lublin, Lublin, Poland. cellbiol@kul.lublin.pl

Abstract:

This study investigated the selected parameters of the antioxidant system in liver and kidney after in vivo administration of vanadium and/or chromium in rats. Outbred 2-mo-old albino male Wistar rats received drinking water for 12 wk with either sodium metavanadate (SMV; group II); chromium chloride (Cr; group III); or sodium metavanadate and chromium chloride (SMV-Cr; group IV); and group I (control) received deionized water. Chronic treatment with V alone or in combination with Cr produced a significant increase in kidney relative weight. Further, giving rats V alone also led to a significant elevation in liver relative weight. An increase in hepatic Fe concentration and renal Zn content occurred after treatment with V or Cr, respectively. The rats coadministered V and Cr had significantly higher levels of Fe in liver and Zn in kidneys. Simultaneous administration of these two elements resulted in a significant decrease in renal L-ascorbic acid concentration. V given alone significantly decreased GSH content and GSH/GSSG ratio in liver and kidney as well as increased GSSG concentration in liver, whereas Cr alone produced a significant decrease in GSH content in kidney and GSH/GSSG ratio in both organs. In the SMV-Cr-treated group a significant decrease in renal GSH concentration and GSH/GSSG ratio in both organs occurred. A significant increase in liver GSSG content was also found. The observed significant changes in kidney GSH content and in GSH/GSSG ratio in both rat tissues after Cr might result from the pro-oxidant actions of this metal. Thus, oxidative stress, which is a major pathway for V-induced toxicity, might also be associated with Cr(III)-induced adverse effects in rats.

Study Type : Animal Study

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Sayer Ji
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