Role of glutathione on renal mitochondrial status in hyperoxaluria

Alagarraju Muthukumar, Ramasamy Selvam

Research output: Contribution to journalArticle

38 Scopus citations

Abstract

Role of glutathione on kidney mitochondrial integrity and function during stone forming process in hyperoxaluric state was investigated in male albino rats of Wistar strain. Hyperoxaluria was induced by feeding ethylene glycol (EG) in drinking water. Glutathione was depleted by administering buthionine sulfoximine (BSO), a specific inhibitor of glutathione biosynthesis. Glutathione monoester (GME) was administered for supplementing glutahione. BSO treatment alone or along with EG, depleted mitochondrial GSH by 40% and 51% respectively. Concomitantly, there was remarkable elevation in lipid peroxidation and oxidation of protein thiols. Mitochondrial oxalate binding was enhanced by 74% and 129% in BSO and BSO + EG treatment. Comparatively, EG treatment produced only a 33% increase in mitochondrial oxalate binding. Significant alteration in calcium homeostasis was seen following BSO and BSO + EG treatment. This may be due to altered mitochondrial integrity and function as evidenced from decreased activities of mitochondrial inner membrane marker enzymes, succinate dehydrogenase and cytochrome-c-oxidase and respiratory control ratio and enhanced NADH oxidation by mitochondria in these two groups. NADH oxidation (r = -0.74) and oxalate deposition in the kidney (r = -0.70) correlated negatively with mitochondrial glutathione depletion. GME supplementation restored normal level of GSH and maintained mitochondrial integrity and function, as a result of which oxalate deposition was prevented despite hyperoxaluria. These results suggest that mitochondrial dysfunction resulting from GSH depletion could be a contributing factor in the development of calcium oxalate stones.

Original languageEnglish (US)
Pages (from-to)77-84
Number of pages8
JournalMolecular and Cellular Biochemistry
Volume185
Issue number1-2
DOIs
StatePublished - Sep 14 1998

Keywords

  • Buthionine sulfoximine
  • Calcium oxalate
  • Ethylene glycol
  • Glutathione
  • Glutathione monoester
  • Mitochondrial function

ASJC Scopus subject areas

  • Molecular Biology
  • Clinical Biochemistry
  • Cell Biology

Fingerprint Dive into the research topics of 'Role of glutathione on renal mitochondrial status in hyperoxaluria'. Together they form a unique fingerprint.

  • Cite this