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Co-immunoprecipitation Assay Using Endogenous Nuclear Proteins from Cells Cultured Under Hypoxic Conditions
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Published on: August 2, 2018

Polymorphisms in hypoxia inducible factor 1 and the initial clinical presentation of coronary disease

Mark A Hlatky1, Thomas Quertermous, Derek B Boothroyd

  • 1Department of Health Research and Policy, Stanford University School of Medicine, Stanford, CA 94305-5405, USA. hlatky@stanford.edu

American Heart Journal
|November 24, 2007
PubMed

Insights

Genetic variations in the HIF1A gene may protect against acute myocardial infarction (MI) in patients with coronary artery disease (CAD). These HIF1A polymorphisms are linked to stable angina, suggesting a role in cardiovascular disease vulnerability.

Area of Science:

  • Cardiovascular Genetics
  • Molecular Cardiology
  • Ischemia Response Pathways

Background:

  • Coronary artery disease (CAD) patient vulnerability to acute myocardial infarction (MI) varies, potentially due to genetic factors.
  • Investigating genetic components in ischemia response pathways may elucidate differential MI susceptibility.

Purpose of the Study:

  • To determine if polymorphisms in genes related to ischemia response influence MI vulnerability in CAD patients.
  • To assess the association between specific gene polymorphisms and the clinical presentation of CAD (acute MI vs. stable angina).

Main Methods:

  • Prospective cohort study of CAD patients presenting with either acute MI or stable exertional angina.
  • Clinical data collection and genotyping of 34 polymorphisms across 6 key genes (ANGPT1, HIF1A, THBS1, VEGFA, VEGFC, VEGFR2).

Main Results:

  • Three polymorphisms in the HIF1A gene were significantly more prevalent in patients with stable angina compared to those with acute MI.
  • These associations remained significant after adjusting for traditional cardiac risk factors and medications.
  • Variant HIF1A alleles demonstrated reduced HIF-mediated transcriptional activity compared to wild-type alleles in cellular assays.

Conclusions:

  • Polymorphisms in the Hypoxia-Inducible Factor 1-Alpha (HIF1A) gene are associated with a presentation of stable exertional angina rather than acute MI in coronary artery disease.
  • This suggests a potential protective genetic role of specific HIF1A variants against acute myocardial infarction in the context of CAD.
Abstract

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