Plasma IL-18 and IL-18BP are altered differently in reverse remodeling following aortic valve replacement.
Scand Cardiovasc J
; 44(2): 113-8, 2010 Apr.
Article
em En
| MEDLINE
| ID: mdl-19961286
ABSTRACT
OBJECTIVES:
Patients with aortic stenosis (AS) develop left ventricular remodeling characterized by changes in extracellular matrix (ECM) and cardiomyocyte-hypertrophy. Aortic valve replacement (AVR) reverses this process (reverse remodeling). We examined plasma levels of interleukin-18 (IL-18) and its binding protein (IL-18BP) before and after AVR for AS since these mediators have been shown experimentally to exert effects on myocardial remodeling.DESIGN:
Plasma levels of IL-18 and IL-18BP were analyzed in 22 patients with AS undergoing AVR, preoperatively, two days, six and 12 months postoperatively. Echocardiography and functional testing were performed.RESULTS:
IL-18BP was significantly increased by 28% and 15% at two days and six months after AVR, compared to preoperative values. In contrast, IL-18 showed a later peak (increased by 24% at 12 months postoperatively) when IL-18BP was normalized. IL-18 correlated positively with deceleration time (R = 0.44) at this time-point which might indicate an association with diastolic function.CONCLUSIONS:
We report for the first time that plasma IL-18 and IL-18BP are differentially regulated after AVR for AS with an early increase in IL-18BP postoperatively followed by a later peak in IL-18 at 12 months. Given the known effects of these mediators on myocardial remodeling and function, they might play a role in the reverse and remodeling process associated with AVR.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Valva Aórtica
/
Estenose da Valva Aórtica
/
Função Ventricular Esquerda
/
Implante de Prótese de Valva Cardíaca
/
Interleucina-18
/
Remodelação Ventricular
/
Peptídeos e Proteínas de Sinalização Intercelular
/
Ventrículos do Coração
Tipo de estudo:
Observational_studies
/
Risk_factors_studies
Limite:
Aged
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Scand Cardiovasc J
Assunto da revista:
ANGIOLOGIA
/
CARDIOLOGIA
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Noruega