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The Association Between α1-Antitrypsin and Coronary Artery Ectasia

Fatma Nihan Turhan Caglar1, Vusal Ksanski1, Veli Polat1

  • 11 Cardiology Department, Bakirkoy Dr. Sadi Konuk Education and Research Hospital, Istanbul, Turkey.

Angiology
|March 9, 2016
PubMed

Insights

Lower serum alpha-1 antitrypsin (A1AT) levels are linked to coronary artery ectasia (CAE). This suggests A1AT deficiency may contribute to arterial wall weakening and ectasia formation in patients with this condition.

Area of Science:

  • Cardiology
  • Biochemistry
  • Genetics

Background:

  • Coronary artery ectasia (CAE) is a condition associated with coronary artery disease, but its pathophysiology remains unclear.
  • Alpha-1 antitrypsin (A1AT) is crucial in regulating protease activity, and A1AT deficiency (A1ATD) is linked to coronary artery disease.
  • Understanding factors contributing to CAE is vital for cardiovascular health management.

Purpose of the Study:

  • To investigate the association between serum A1AT levels and the presence of isolated CAE.
  • To determine if A1AT levels correlate with the extent of ectasia in patients with CAE.

Main Methods:

  • Serum A1AT levels were measured in 50 patients with isolated CAE and 46 controls using nephelometry.
  • Patients underwent coronary angiography, and CAE extent was assessed using the Markis score.
  • Statistical analysis compared A1AT levels between groups and correlated them with the Markis score.

Main Results:

  • Median A1AT levels were significantly lower in patients with isolated CAE compared to controls (P < .001).
  • No significant correlation was found between A1AT serum levels and the extent of CAE as determined by the Markis score (P = .41).

Conclusions:

  • Serum A1AT levels are inversely associated with the presence of coronary artery ectasia.
  • Reduced A1AT may compromise arterial wall integrity by impairing protease inhibition, potentially contributing to ectasia development.

Keywords:
atherosclerosiscoronary artery ectasiaα1-antitrypsin

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