Role of serotoninergic pathways in drug-induced valvular heart disease and diagnostic features by echocardiography.
J Am Soc Echocardiogr
; 22(8): 883-9, 2009 Aug.
Article
em En
| MEDLINE
| ID: mdl-19553085
ABSTRACT
Serotonin plays a significant role in the development of carcinoid heart disease, which primarily leads to fibrosis and contraction of right-sided heart valves. Recently, strong evidence has emerged that the use of specific drug classes, such as ergot alkaloids (for migraine headaches), 5-hydroxytryptamine (5-HT or serotonin) uptake regulators or inhibitors (for weight reduction), and ergot-derived dopamine agonists (for Parkinson's disease), can result in left-sided heart valve damage that resembles carcinoid heart disease. Recent studies have suggested that both right-sided and left-sided drug-induced heart valve disease involves increased serotoninergic activity and in particular activation of the 5-HT receptors, including the 5-HT2B receptor subtype, which mediate many of the central and peripheral functions of serotonin. G-proteins that inhibit adenylate cyclase activity mediate the activity of the 5-HT2B receptor subunit, which is widely expressed in a variety of tissues, including liver, lung, heart, and coronary and pulmonary arteries; it has also been reported in embryonic mouse heart, particularly on mouse heart valve leaflets. In this review, the authors discuss the salient features of serotoninergic manifestations of both carcinoid heart disease and drug-induced cardiac valvulopathy, with an emphasis on echocardiographic diagnosis.
Texto completo:
1
Coleções:
01-internacional
Temas:
Geral
Base de dados:
MEDLINE
Assunto principal:
Antagonistas da Serotonina
/
Ecocardiografia
/
Serotonina
/
Agonistas do Receptor de Serotonina
/
Doenças das Valvas Cardíacas
/
Valvas Cardíacas
Tipo de estudo:
Diagnostic_studies
Limite:
Animals
/
Humans
Idioma:
En
Revista:
J Am Soc Echocardiogr
Assunto da revista:
DIAGNOSTICO POR IMAGEM
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
Estados Unidos