Bradykinin B2BKR receptor polymorphism and left-ventricular growth response

Area of Science:

• Cardiovascular Physiology
• Human Genetics
• Exercise Science

Background:

• Angiotensin-converting-enzyme (ACE) activity influences left-ventricular (LV) growth.
• Genetic variants in ACE and the bradykinin 2 receptor (B2BKR) gene affect enzyme activity and receptor expression.
• Physical training induces physiological LV growth.

Discussion:

• The ACE D/D genotype and B2BKR +9/+9 genotype were associated with greater LV growth.
• The ACE I/I genotype and B2BKR -9/-9 genotype were associated with reduced or negative LV growth.
• These findings highlight the role of kinins in mediating ACE effects on LV adaptation.

Key Insights:

• Significant correlation observed between ACE and B2BKR genotypes and physiological left-ventricular growth post-training.
• Individuals with specific ACE (D/D) and B2BKR (+9/+9) genotypes exhibit enhanced left-ventricular adaptation.
• Conversely, ACE (I/I) and B2BKR (-9/-9) genotypes are linked to diminished left-ventricular remodeling.

Outlook:

• Further research into kinin-mediated pathways could reveal novel therapeutic targets for cardiovascular adaptation.
• Investigating these genetic influences may personalize exercise prescriptions for optimal cardiac benefits.
• Understanding gene-environment interactions is crucial for optimizing physiological responses to physical stimuli.