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Assessment of Vascular Function in Patients With Chronic Kidney Disease
08:50

Assessment of Vascular Function in Patients With Chronic Kidney Disease

Published on: June 16, 2014

Decrease in reduced-form albumin among chronic kidney disease patients: new insights in cardiovascular complications

Hiroyuki Terawaki1, Seiichi Era, Masaaki Nakayama

  • 1Division of Kidney and Hypertension, The Jikei University School of Medicine, Tokyo, Japan. terawaki@jikei.ac.jp

Therapeutic Apheresis and Dialysis : Official Peer-Reviewed Journal of the International Society for Apheresis, the Japanese Society for Apheresis, the Japanese Society for Dialysis Therapy
|March 24, 2011
PubMed

Insights

Human serum albumin (HSA) redox states, including human mercaptoalbumin (HMA) and non-mercaptoalbumin (HNA), were analyzed in chronic kidney disease. Decreased HMA levels correlate with uremic toxins and cardiovascular disease risk.

Area of Science:

  • Biochemistry
  • Clinical Chemistry
  • Analytical Chemistry

Background:

  • Human serum albumin (HSA) exists in multiple redox forms based on its free cysteine residue (Cys-34).
  • These forms include human mercaptoalbumin (HMA, reduced), human non-mercaptoalbumin-1 (HNA-1, reversibly oxidized), and HNA-2 (strongly oxidized to sulfinic/sulfonic acids).
  • Altered HSA redox status is implicated in various disease states, particularly chronic kidney disease (CKD).

Purpose of the Study:

  • To develop and apply a high-performance liquid chromatography (HPLC) system for separating HSA redox forms.
  • To investigate the dynamic changes in HSA redox states in patients with chronic kidney disease.
  • To explore the relationship between HSA redox status, uremic toxins, and cardiovascular disease (CVD) incidence.

Main Methods:

  • Development of a convenient HPLC system for separating HMA, HNA-1, and HNA-2.
  • Analysis of HSA redox forms in both clinical and experimental settings of chronic kidney disease.
  • Correlation analysis between HSA redox states, dialyzable uremic toxins, and CVD incidence.

Main Results:

  • A robust HPLC method was established for clear separation of HSA redox species.
  • Dynamic changes in HSA redox states were observed in chronic kidney disease.
  • A significant relationship was identified between decreased reduced HSA (HMA) and the presence of dialyzable uremic toxins, as well as increased risk of cardiovascular disease.

Conclusions:

  • The developed HPLC method effectively distinguishes HSA redox forms.
  • Chronic kidney disease is associated with significant alterations in HSA redox balance.
  • Reduced HSA levels are linked to uremic toxins and predict cardiovascular disease risk in CKD patients.

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