The role of adrenergic receptor polymorphisms in heart failure.
Braz J Med Biol Res
; 39(10): 1281-90, 2006 Oct.
Article
in En
| MEDLINE
| ID: mdl-17053838
ABSTRACT
The main function of the cardiac adrenergic system is to regulate cardiac work both in physiologic and pathologic states. A better understanding of this system has permitted the elucidation of its role in the development and progression of heart failure. Regardless of the initial insult, depressed cardiac output results in sympathetic activation. Adrenergic receptors provide a limiting step to this activation and their sustained recruitment in chronic heart failure has proven to be deleterious to the failing heart. This concept has been confirmed by examining the effect of beta-blockers on the progression of heart failure. Studies of adrenergic receptor polymorphisms have recently focused on their impact on the adrenergic system regarding its adaptive mechanisms, susceptibilities and pharmacological responses. In this article, we review the function of the adrenergic system and its maladaptive responses in heart failure. Next, we discuss major adrenergic receptor polymorphisms and their consequences for heart failure risk, progression and prognosis. Finally, we discuss possible therapeutic implications resulting from the understanding of polymorphisms and the identification of individual genetic characteristics.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Polymorphism, Genetic
/
Cardiac Output, Low
/
Receptors, Adrenergic, alpha
/
Receptors, Adrenergic, beta
Type of study:
Prognostic_studies
Limits:
Humans
Language:
En
Journal:
Braz J Med Biol Res
Year:
2006
Document type:
Article
Affiliation country:
Brazil