Angiotensin converting enzyme insertion/deletion polymorphism does not influence postcardiac transplantation

J E Fildes1, A H Walker, C G Densem

  • 1Transplant Centre, South Manchester University Hospitals NHS Trust, Wythenshawe Hospital, Manchester, United Kingdom.

Insights

This study found no link between the angiotensin converting enzyme (ACE) insertion deletion (I/D) polymorphism and hypertension after heart transplantation. Neither recipient nor donor ACE genotype influenced blood pressure or antihypertensive medication use.

Area of Science:

  • Cardiovascular Genetics
  • Transplantation Medicine
  • Pharmacogenomics

Background:

  • Posttransplantation hypertension is a significant complication following cardiac transplantation.
  • The angiotensin converting enzyme insertion deletion (ACE I/D) polymorphism has been implicated in cardiovascular diseases.

Purpose of the Study:

  • To investigate the association between the ACE I/D polymorphism and the development of posttransplantation hypertension in cardiac transplant recipients.

Main Methods:

  • Genotyping for the ACE I/D polymorphism in 211 heart transplant recipients and 154 donors using polymerase chain reaction.
  • Measurement of ACE enzymatic activity and blood pressure.
  • Analysis of clinical data including demographics and medications.

Main Results:

  • No significant differences were observed in antihypertensive medication use, cyclosporine levels, renal function, or blood pressure based on recipient or donor ACE genotypes.
  • No correlation was found between ACE enzymatic activity and blood pressure.

Conclusions:

  • This study, the largest of its kind in a cardiac transplantation population, found no relationship between ACE genotype and systemic hypertension.
  • The ACE I/D polymorphism does not appear to influence hypertension development or management post-cardiac transplant.
Abstract

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