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Published in: Urolithiasis 1/2023

01-12-2023 | Urolithiasis | Research

Osteopontin phosphopeptide mitigates calcium oxalate stone formation in a Drosophila melanogaster model

Authors: Polycronis P. Akouris, John A. Chmiel, Gerrit A. Stuivenberg, Wongsakorn Kiattiburut, Jennifer Bjazevic, Hassan Razvi, Bernd Grohe, Harvey A. Goldberg, Jeremy P. Burton, Kait F. Al

Published in: Urolithiasis | Issue 1/2023

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Abstract

Kidney stone disease affects nearly one in ten individuals and places a significant economic strain on global healthcare systems. Despite the high frequency of stones within the population, effective preventative strategies are lacking and disease prevalence continues to rise. Osteopontin (OPN) is a urinary protein that can inhibit the formation of renal calculi in vitro. However, the efficacy of OPN in vivo has yet to be determined. Using an established Drosophila melanogaster model of calcium oxalate urolithiasis, we demonstrated that a 16-residue synthetic OPN phosphopeptide effectively reduced stone burden in vivo. Oral supplementation with this peptide altered crystal morphology of calcium oxalate monohydrate (COM) in a similar manner to previous in vitro studies, and the presence of the OPN phosphopeptide during COM formation and adhesion significantly reduced crystal attachment to mammalian kidney cells. Altogether, this study is the first to show that an OPN phosphopeptide can directly mitigate calcium oxalate urolithiasis formation in vivo by modulating crystal morphology. These findings suggest that OPN supplementation is a promising therapeutic approach and may be clinically useful in the management of urolithiasis in humans.
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Metadata
Title
Osteopontin phosphopeptide mitigates calcium oxalate stone formation in a Drosophila melanogaster model
Authors
Polycronis P. Akouris
John A. Chmiel
Gerrit A. Stuivenberg
Wongsakorn Kiattiburut
Jennifer Bjazevic
Hassan Razvi
Bernd Grohe
Harvey A. Goldberg
Jeremy P. Burton
Kait F. Al
Publication date
01-12-2023
Publisher
Springer Berlin Heidelberg
Keyword
Urolithiasis
Published in
Urolithiasis / Issue 1/2023
Print ISSN: 2194-7228
Electronic ISSN: 2194-7236
DOI
https://doi.org/10.1007/s00240-022-01395-2

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