Identification of Circulating Plasma Proteins as a Mediator of Hypertension-Driven Cardiac Remodeling: A Mediation

Yuanlong Hu1, Lin Lin2, Lei Zhang3

  • 1First Clinical Medical College (Y.H., M.Z., J. Huan, Yunlun Li), Shandong University of Traditional Chinese Medicine, Jinan, China.

Insights

This study identified specific plasma proteins that mediate hypertension's harmful effects on the heart. These findings advance our understanding of how high blood pressure leads to cardiac remodeling and heart failure.

Area of Science:

  • Cardiovascular Genetics
  • Proteomics
  • Medical Science

Background:

  • Hypertension causes significant myocardial remodeling and heart failure.
  • Identifying the specific mediators of this process is crucial for targeted interventions.

Purpose of the Study:

  • To investigate the causal impact of blood pressure on cardiac traits using Mendelian randomization.
  • To identify plasma proteins that mediate the effects of blood pressure on cardiac remodeling and heart failure risk.

Main Methods:

  • A Mendelian randomization design was employed to assess the causal relationships.
  • Mediation analyses were conducted to pinpoint plasma protein mediators.
  • Cardiac magnetic resonance imaging traits and heart failure risk were evaluated.

Main Results:

  • Higher systolic blood pressure (SBP), diastolic blood pressure (DBP), and pulse pressure were causally linked to increased left ventricular myocardial mass and altered wall thickness.
  • Specific plasma proteins, including fibroblast growth factor 5 (FGF5) and leptin, were identified as mediators.
  • FGF5 mediated the effects of SBP and DBP on myocardial wall thickness and heart failure susceptibility.

Conclusions:

  • This study provides evidence for specific circulating plasma proteins as key mediators of hypertension-driven cardiac remodeling.
  • The findings highlight potential therapeutic targets for preventing and treating hypertension-related heart conditions.
Abstract

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