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[A study on angiotensin-I converting enzyme polymorphism in CAPD patients]
1Department of Internal Medicine, School of Medicine, Tokai University, Kanagawa, Japan.
Nihon Jinzo Gakkai Shi
|December 1, 1996
Summary
The angiotensin-I converting enzyme (ACE) DD genotype is linked to faster kidney function decline and larger heart size in dialysis patients. This ACE gene polymorphism impacts renal function and cardiac health in patients undergoing dialysis.
Area of Science:
- Genetics
- Nephrology
- Cardiology
Context:
- Polymorphism of the angiotensin-I converting enzyme (ACE) gene is investigated in patients undergoing chronic ambulatory peritoneal dialysis (CAPD) and hemodialysis (HD).
- Comparison is made with a control group of healthy subjects to understand allele frequency differences.
- The study examines the association between ACE gene polymorphism and clinical outcomes in dialysis patients.
Purpose:
- To clarify the role of angiotensin-I converting enzyme (ACE) gene polymorphisms in patients undergoing chronic ambulatory peritoneal dialysis (CAPD) and hemodialysis (HD).
- To investigate the correlation between ACE genotypes and the rate of residual renal function decline.
- To assess the relationship between ACE genotypes and cardiac status, specifically cardiothoracic ratio, in CAPD patients.
Summary:
- Dialysis patients (n=110) showed different ACE genotype frequencies (II: 21.8%, ID: 48.2%, DD: 30.0%) compared to healthy controls (p < 0.001).
- CAPD patients with the DD genotype exhibited significantly higher plasma ACE activity and a faster decrease in residual urinary volume (p < 0.05).
- The DD genotype was also associated with significant cardiac enlargement (increased cardiothoracic ratio) in CAPD patients.
Impact:
- The DD genotype of the ACE gene is associated with accelerated loss of residual renal function in CAPD patients.
- Patients with the DD genotype demonstrate a higher incidence of cardiac enlargement, suggesting a link between ACE polymorphism and cardiovascular complications.
- These findings highlight the clinical significance of ACE gene polymorphism in managing dialysis patients and predicting renal and cardiac outcomes.