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The effect of valvular regurgitation on plasma Cardiotrophin-1 in patients with normal left ventricular systolic

S Talwar1, I B Squire, J E Davies

  • 1Department of Medicine and Therapeutics, University of Leicester, Leicester, UK.

European Journal of Heart Failure
|December 13, 2000
PubMed

Insights

Plasma Cardiotrophin-1 (CT-1) is elevated in patients with moderate/severe mitral regurgitation (MR) and normal heart function. This finding suggests CT-1 may predict MR progression and ventricular dysfunction.

Area of Science:

  • Cardiovascular Biology
  • Biochemistry
  • Medical Diagnostics

Background:

  • Cardiotrophin-1 (CT-1) is a cytokine that can induce eccentric hypertrophy and heart dysfunction.
  • Volume overload in the heart can lead to similar eccentric hypertrophy.
  • Understanding CT-1's role in valvular heart disease is crucial for early detection and management.

Purpose of the Study:

  • To investigate if plasma CT-1 levels are elevated in patients with significant mitral, tricuspid, or aortic regurgitation.
  • To compare CT-1 levels between patients with and without significant valvular regurgitation.
  • To explore the correlation between CT-1 levels and the severity of valvular regurgitation.

Main Methods:

  • Developed a novel competitive immunoluminometric assay for CT-1 detection.
  • Studied 78 patients with normal left ventricular systolic function.
  • Measured plasma CT-1 concentrations in patients with and without significant mitral, tricuspid, and aortic regurgitation.

Main Results:

  • Plasma CT-1 concentrations were significantly higher in patients with moderate/severe mitral regurgitation (MR) compared to those without significant regurgitation (P<0.03).
  • Elevated CT-1 levels were also observed in patients with moderate/severe tricuspid regurgitation (TR), though not statistically significant compared to controls.
  • Log CT-1 was the sole predictor of moderate/severe MR (P=0.004).

Conclusions:

  • Plasma CT-1 is elevated in patients with moderate/severe MR and preserved left ventricular systolic function.
  • Elevated CT-1 may contribute to ventricular dilatation and impaired function in MR patients.
  • Plasma CT-1 may serve as a biochemical marker for monitoring MR progression.
Abstract

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