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Renin-Angiotensin System Gene Polymorphisms and Left Ventricular Hypertrophy

The Case against an Association
  • M. J. West
  • K. M. Summers
  • K. K. Wong
  • D. J. Burstow
Chapter
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 432)

Summary

There is accumulating evidence for association between genetic polymorphisms of components of the renin angiotensin system (RAS), especially angiotensin-converting enzyme (ACE), and cardiovascular disease. However, there is lack of agreement that the ACE polymorphism is associated with left ventricular hypertrophy (LVH) in hypertension. A possible paradigm for the development of LVH involves the ACE gene polymorphism influencing cardiac mass by an action on plasma and/or tissue levels of angiotensin II. Such a model has experimental support and provides the basis for examining the lack of agreement between studies. The finding of lack of association between RAS gene polymorphism and LVH may be due to methodological problems, differences in genetic background between populations, interactions between genetic variants of RAS components or to the model being inappropriate.

Low predictability of ACE genotype markers for LVH together with conflicting reports on the influence of RAS genetic variants on angiotensin II production suggests that the simple RAS paradigm may not apply for hypertension. Further information on the nature of the link between the ACE polymorphism and ACE regulation as well as the relation between the RAS and pathophysiology of LVH is needed. At present there is insufficient evidence to accept ACE gene polymorphism as a susceptibility marker for LVH.

Keywords

Left Ventricular Hypertrophy Renin Angiotensin System Total Wall Thickness Prince Charles Hospital Renin Angiotensin System Component 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • M. J. West
    • 1
  • K. M. Summers
    • 1
  • K. K. Wong
    • 1
  • D. J. Burstow
    • 1
  1. 1.Departments of Medicine and CardiologyUniversity of Queensland Prince Charles HospitalCHERMSIDEAustralia

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