Journal of Biosciences

, Volume 30, Issue 4, pp 475–481 | Cite as

Kinetics of fatty acid binding ability of glycated human serum albumin

  • Eiji Yamazaki
  • Minoru Inagaki
  • Osamu Kurita
  • Tetsuji Inoue


Kinetics of fatty acid binding ability of glycated human serum albumin (HSA) were investigated by fluorescent displacement technique with 1-anilino-8-naphtharene sulphonic acid (ANS method), and photometric detection of nonesterified-fatty-acid (NEFA method). Changing of binding affinities of glycated HSA toward oleic acid, linoleic acid, lauric acid, and caproic acid, were not observed by the ANS method. However, decreases of binding capacities after 55 days glycation were confirmed by the NEFA method in comparison to control HSA. The decrease in binding affinities was: oleic acid (84%), linoleic acid (84%), lauric acid (87%), and caproic acid (90%), respectively. The decreases were consistent with decrease of the intact lysine residues in glycated HSA. The present observation indicates that HSA promptly loses its binding ability to fatty acid as soon as the lysine residues at fatty acid binding sites are glycated.


1-anilino-8-naphtharene sulphonic acid diabetes, dissociation constant fatty acids binding fluorescence displacement assay glycation human serum albumin 


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Copyright information

© Indian Academy of Sciences 2005

Authors and Affiliations

  • Eiji Yamazaki
    • 1
  • Minoru Inagaki
    • 1
    • 2
  • Osamu Kurita
    • 1
  • Tetsuji Inoue
    • 1
  1. 1.Industrial Research DivisionScience and Technology Promotion CenterMieJapan
  2. 2.Department of Life Sciences, Faculty of BioresourcesMie UniversityMieJapan

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