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Molecular and Cellular Biochemistry

, Volume 284, Issue 1–2, pp 95–101 | Cite as

Oxalate mediated nephronal impairment and its inhibition by c-phycocyanin: A study on urolithic rats

  • Shukkur Muhammed Farooq
  • Abdul Shukkur Ebrahim
  • Karthik Harve Subramhanya
  • Ramasamy Sakthivel
  • Nachiappa Ganesh Rajesh
  • Palaninathan Varalakshmi
Article

Abstract

The assumption of oxidative stress as a mechanism in oxalate induced renal damage suggests that antioxidants might play a beneficial role against oxalate toxicity. An in vivo model was used to investigate the effect of C-phycocyanin (from aquatic micro algae; Spirulina spp.), a known antioxidant, against calcium oxalate urolithiasis. Hyperoxaluria was induced in two of the 4 groups of Wistar albino rats (n = 6 in each) by intraperitoneally injecting sodium oxalate (70,mg/kg body weight). A pretreatment of phycocyanin (100,mg/kg body weight) as a single oral dosage was given, one hour prior to oxalate challenge. An untreated control and drug control (phycocyanin alone) were employed. Phycocyanin administration resulted in a significant improvement (p < 0.001) in the thiol content of renal tissue and RBC lysate via increasing glutathione and reducing malondialdehyde levels in the plasma of oxalate induced rats (p < 0.001), indicating phycocyanin’s antioxidant effect on oxalate mediated oxidative stress. Administering phycocyanin after oxalate treatment significantly increased catalase and glucose-6-phosphate dehydrogenase activity (p < 0.001) in RBC lysate suggesting phycocyanin as a free radical quencher. Assessing calcium oxalate crystal retention in renal tissue using polarization microscopy and renal ultrastructure by electron microscopy reveals normal features in phycocyanin – pretreated groups. Thus the study presents positive pharmacological implications of phycocyanin against oxalate mediated nephronal impairment and warrants further work to tap this potential aquatic resource for its medicinal application. (Mol Cell Biochem xxx: 1–7, 2004)

Keywords

antioxidant hyperoxaluria oxidative stress phycocyanin 

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Copyright information

© Springer Science + Business Media, Inc. 2006

Authors and Affiliations

  • Shukkur Muhammed Farooq
    • 1
  • Abdul Shukkur Ebrahim
    • 2
  • Karthik Harve Subramhanya
    • 3
  • Ramasamy Sakthivel
    • 1
  • Nachiappa Ganesh Rajesh
    • 4
  • Palaninathan Varalakshmi
    • 1
  1. 1.Department of Medical Biochemistry, Dr. A.L.M. Postgraduate Institute of Basic Medical, SciencesUniversity of MadrasChennaiIndia
  2. 2.Lab for Neurogenetics, BSI, RIKENSaitamaJapan
  3. 3.Division of BioengineeringNUSKent RidgeSingapore
  4. 4.Department of Pathology, Dr. A.L.M. Postgraduate Institute of Basic Medical SciencesUniversity of MadrasChennaiIndia

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