D-Aspartic acid induced oxidative stress and mitochondrial dysfunctions in testis of prepubertal rats

Chandrashekar, K. N. and Dr., Muralidhara (2010) D-Aspartic acid induced oxidative stress and mitochondrial dysfunctions in testis of prepubertal rats. Amino Acids.

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Abstract

Previously we demonstrated the potential of D-aspartic acid (D-Asp), an acidic amino acid to induce oxidative response in prepubertal rat testis in vitro. In the present study, we determined the extent of oxidative stress in the testis of prepubertal rats that were administered D-Asp (100 and 500 mg/kg bw/d, i.p. 7 days). D-Asp treatment significantly elevated the levels of reactive oxygen species, malondialdehyde and hydroperoxide in cytosol and mitochondria of testis, which were accompanied by enhanced glutathione levels, elevated activities of glutathione- dependent enzymes and catalase suggesting a state of oxidative stress. Further, the activities of D-aspartate oxidase and 3b-hydroxy steroid dehydrogenase were elevated in the testis. The testis mitochondria of D-Asp-treated rats showed altered citric acid and complex enzyme activities, reduction in membrane potential, increased permeability and intracellular Ca2? levels. Collectively, these findings suggest the potential of D-Asp to induce oxidative perturbations in the testis of prepubertal rats and this mechanism may in part be responsible for the observed physiological effects.

Item Type:	Article
Uncontrolled Keywords:	D-Aspartic acid � Oxidative stress � Testis � Mitochondrial dysfunctions � Steroidogenesis � Prepubertal rats
Subjects:	600 Technology > 01 Medical sciences
Divisions:	Dept. of Biochemistry
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	25 Feb 2010 10:41
Last Modified:	09 May 2012 05:05
URI:	http://ir.cftri.res.in/id/eprint/9338

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