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Postmortem IgE determination in coronary artery disease.

Karine Lambert1, Rexson Tse2, Camilla Tettamanti3

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Elevated levels of immunoglobulin E (IgE) and mast cell tryptase were observed in some cardiac death cases with coronary artery atherosclerosis. These findings support the link between allergic inflammation and cardiovascular disease progression.

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Area of Science:

  • Forensic Pathology
  • Immunology
  • Cardiovascular Science

Background:

  • Allergic, immunoglobulin E (IgE)-mediated inflammation is implicated in atherogenesis and atherosclerotic disease progression.
  • Previous research suggests a connection between allergic responses and the development of atherosclerosis.

Purpose of the Study:

  • To investigate the correlation between postmortem levels of total IgE and mast cell tryptase and morphological findings in coronary artery atherosclerosis.
  • To compare forensic findings with existing clinical and forensic literature on IgE and atherosclerosis.

Main Methods:

  • Measurement of total IgE and mast cell tryptase in postmortem serum from forensic autopsy cases.
  • Categorization of cardiac death cases based on coronary artery atherosclerosis severity and acute coronary events.
  • Inclusion of non-cardiac death cases as controls.

Main Results:

  • In cardiac death cases (n=42), increased total IgE was found in 7 cases and increased mast cell tryptase in 3 cases.
  • In non-cardiac death cases (n=42), no significant increases in total IgE or mast cell tryptase were observed.
  • A portion of coronary deaths showed elevated IgE and mast cell tryptase levels, correlating with coronary artery atherosclerosis.

Conclusions:

  • Preliminary findings suggest a link between elevated IgE and mast cell tryptase levels and coronary artery atherosclerosis in certain cardiac deaths.
  • These results corroborate existing data on the role of allergic inflammation in cardiovascular disease.
  • The study highlights the importance of combining morphological and biochemical analyses in investigating cardiovascular deaths.