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Urolithiasis
Published in: Urolithiasis 5/2004

01-10-2004 | Original Paper

Calcium oxalate monohydrate binding protein: a diagnostic biomarker for calcium oxalate kidney stone formers

Authors: D. Asokan, P. Kalaiselvi, S. Muhammed Farooq, P. Varalakshmi

Published in: Urolithiasis | Issue 5/2004

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Abstract

Urinary oxalate is a biomarker for calcium oxalate kidney stone disease; however, its assay is insensitive and nonspecific. Calcium oxalate monohydrate (COM) binding protein (45 kDa) is a promoter of calcium oxalate kidney disease, which is markedly upregulated by oxalate induced oxidative stress. The current study was carried out to evaluate whether COM binding protein can serve as a diagnostic marker for calcium oxalate kidney stone formers. COM binding protein was isolated, purified and antibody was raised against it in rabbits. Urine samples (24 h) were collected from patients suffering from various kidney diseases such as acute nephritis, chronic nephritis, nephrotic syndrome, calcium oxalate (CaOx) stone formers, uric acid stone formers, struvite stone formers and calcium phosphate stone formers. This COM binding protein was quantified by an in house ELISA method and the excretion was found to lie between 2 and 3 mg in control samples, while in CaOx stone formers it was detected between 11 and 19 mg. Urinary risk factors were assayed. We conclude that COM binding protein can serve as a diagnostic marker for CaOx stone formers.
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Metadata
Title
Calcium oxalate monohydrate binding protein: a diagnostic biomarker for calcium oxalate kidney stone formers
Authors
D. Asokan
P. Kalaiselvi
S. Muhammed Farooq
P. Varalakshmi
Publication date
01-10-2004
Publisher
Springer-Verlag
Published in
Urolithiasis / Issue 5/2004
Print ISSN: 2194-7228
Electronic ISSN: 2194-7236
DOI
https://doi.org/10.1007/s00240-004-0430-x

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