Fetuin-A and arterial stiffness in patients with normal kidney function

Marcel Roos1, Tom Richart, Tatiana Kouznetsova

  • 1Department of Nephrology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany. marphiro@hotmail.com

Regulatory Peptides
|December 27, 2008
PubMed

Insights

Fetuin-A levels inversely correlate with aortic stiffness in men with normal kidney function. Male carriers of the fetuin-A SerSer genotype exhibit significantly higher aortic stiffness, indicating potential cardiovascular risk.

Area of Science:

  • Cardiovascular research
  • Vascular biology
  • Genetics and cardiovascular health

Background:

  • Aortic pulse wave velocity (aPWV) predicts cardiovascular mortality.
  • Fetuin-A inhibits calcification and is linked to vascular stiffness in dialysis patients.
  • The fetuin-A Thr256Ser polymorphism affects fetuin-A levels and vascular calcification in dialysis patients.

Purpose of the Study:

  • To investigate the association between fetuin-A levels and its gene polymorphism (Thr256Ser) with arterial function in individuals with normal kidney function.
  • To determine if fetuin-A independently predicts arterial stiffness in healthy subjects.

Main Methods:

  • Study included 116 subjects with normal kidney function from the FLEMENGHO study.
  • Measurements included plasma fetuin-A, fetuin-A gene polymorphism (Thr256Ser), aortic pulse wave velocity (aPWV), and arterial distensibility.
  • Calcium levels and other arterial stiffness indicators were also assessed.

Main Results:

  • Fetuin-A levels showed a negative correlation with aPWV (r=-0.21, p=0.029).
  • After adjusting for covariables, fetuin-A remained independently associated with aPWV in males (r=-0.30, p=0.022), but not in females.
  • Male fetuin-A SerSer carriers had lower fetuin-A levels and significantly higher aPWV compared to ThrThr and ThrSer carriers.

Conclusions:

  • Fetuin-A levels, unlike other calcium variables, demonstrated an inverse relationship with aPWV in men with normal renal function.
  • Male fetuin-A SerSer genotype carriers present with notably high aortic stiffness, suggesting a potential increase in cardiovascular risk.
Abstract

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