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Urinary stone analysis in a patient with hyperuricemia to determine the mechanism of stone formation

  • Kiyoko Kaneko
  • , Norifumi Yoshida
  • , Keitaro Okazaki
  • , Tomoyo Yamanobe
  • , Noriko Yamaoka
  • , Makoto Yasuda
  • , Nobuyuki Ogata
  • , Yasukazu Yamada
  • , Shunya Uchida
  • , Shin Fujimori
  • Teikyo University
  • Aichi Developmental Disability Center

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

In order to determine the mechanism of urinary stone formation in patients with hyperuricemia, we analyzed the crystal components and matrix proteins in a urinary stone from such a patient. Micro-area X-ray spectrometry and infrared (IR) spectroscopy suggested that the outside of the stone was composed of calcium oxalate monohydrate (COM) and the inside of uric acid (UA). Proteomic analysis identified 37 and 14 proteins from the inside and outside of the stone, respectively, as matrix proteins. The proteins that were identified in an ethylenediaminetetraacetic acid (EDTA) fraction were able to bind calcium ions. Thus, calcium-binding proteins may play a significant role in the formation of urinary stones in patients with hyperuricemia.

Original languageEnglish
Pages (from-to)1072-1076
Number of pages5
JournalNucleosides, Nucleotides and Nucleic Acids
Volume30
Issue number12
DOIs
StatePublished - 2011

Keywords

  • Crystal component
  • Matrix protein
  • Proteomic analysis
  • Urinary stone
  • X-ray spectrometry

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