First evidence for accumulation of protein-bound and protein-free pyrraline in human uremic plasma by mass spectrometry

Hiroko Odani, Toru Shinzato, Yoshihiro Matsumoto, Ichiro Takai, Shigeru Nakai, Masamiki Miwa, Norihisa Iwayama, Izumi Amano, Kenji Maeda

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Glucose-derived advanced glycation end products (AGEs) cross-link proteins and cause various biological tissue damage. One of them, pyrraline [ε-2-(formyl-5-hydroxymethyl-pyrrol-1-yl) has been demonstrated by utilizing antibody to accumulate in plasma and sclerosed matrix of diabetic individuals, suggesting responsibility for diabetic complications. To elucidate the involvement of pyrraline in uremia, we examined the pyrraline levels in patients with chronic renal failure by a mass spectrometric approach. Here we show that protein-free pyrraline as well as pyrraline with binding protein are significantly increased in non-diabetic uremic plasma compared to healthy subjects. Our results suggest that circulating pyrraline could be a substance contributing to complications in uremia.

Original languageEnglish
Pages (from-to)237-241
Number of pages5
JournalBiochemical and Biophysical Research Communications
Volume224
Issue number1
DOIs
Publication statusPublished - 05-07-1996
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

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