Hypertensive left ventricular remodeling and ACE-gene polymorphism.

Area of Science:

• Cardiovascular Genetics
• Molecular Cardiology
• Hypertension Research

Background:

• The Angiotensin-Converting Enzyme (ACE) gene polymorphism, specifically the insertion/deletion (I/D) variant, has been implicated in cardiovascular disease.
• Left ventricular geometry is a crucial determinant of cardiovascular outcomes in hypertension.

Purpose of the Study:

• To investigate the association between ACE-gene polymorphism and left ventricular geometry in never-treated hypertensive patients.
• To determine if specific ACE genotypes influence the development of left ventricular hypertrophy and remodeling.

Main Methods:

• 200 never-treated hypertensive outpatients were recruited.
• Echocardiography was performed to assess left ventricular mass and relative wall thickness.
• ACE-gene insertion/deletion polymorphism was analyzed using polymerase chain reaction (PCR).

Main Results:

• The DD genotype was associated with significantly higher left ventricular mass index compared to ID and II genotypes (P < 0.005 and P < 0.05, respectively).
• A higher prevalence of eccentric left ventricular hypertrophy was observed in patients with the DD genotype (36.8%) compared to ID (10.5%) and II (16.6%) genotypes (P < 0.05).
• Statistically significant differences in relative posterior wall thickness and end-diastolic left ventricular internal dimension were found between DD and ID genotypes.

Conclusions:

• The DD genotype of the ACE gene is associated with increased left ventricular mass.
• Individuals with the DD genotype exhibit a significantly higher prevalence of eccentric left ventricular hypertrophy compared to the ID genotype.
• ACE-gene polymorphism plays a role in modulating left ventricular geometry in hypertensive individuals.