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Los polimorfismos de un solo nucleótido en múltiples genes novedosos de la trombospondina pueden estar asociados con
E J Topol1, J McCarthy, S Gabriel
1Cleveland Clinic Foundation, Cleveland, Ohio, USA. topole@ccf.org
Circulation
|November 28, 2001
Resumen
Las variantes genéticas en la familia de genes de la trombospondina están vinculadas a la enfermedad arterial coronaria prematura. Las nuevas variantes en los genes de la trombospondina muestran asociaciones con el infarto de miocardio familiar, lo que justifica una mayor investigación.
Área de la Ciencia:
- Genética La genética.
- Investigación de Enfermedades Cardiovasculares Investigación de Enfermedades Cardiovasculares
- Biología Molecular Biología Molecular
Sus antecedentes:
- La genómica de alto rendimiento permite catalogar variantes genéticas en enfermedades como la enfermedad arterial coronaria prematura (EAC).
- Comprender las predisposiciones genéticas es crucial para identificar a las personas en riesgo de padecer enfermedades cardíacas de aparición temprana.
Objetivo del estudio:
- Investigar la asociación entre las nuevas variantes genéticas en los genes de la biología vascular y la enfermedad arterial coronaria prematura (CAD).
- Identificar variantes específicas del gen de la trombospondina potencialmente relacionadas con el infarto de miocardio familiar (IM).
Principales métodos:
- Análisis genómico de 72 polimorfismos de un solo nucleótido (SNPs) a través de 62 genes de biología vascular en 398 familias con CAD prematura.
- Pruebas de asociación estadística para identificar SNPs vinculados a infarto de miocardio, revascularización o lesiones significativas de la arteria coronaria antes de los 45 años (hombres) o 50 (mujeres).
Principales resultados:
- Las nuevas variantes en tres miembros de la familia de las trombospondinas se asociaron con CAD prematura.
- Una variante de trombospondina 4 (THBS4) (A387P) mostró la asociación más fuerte con el MI (OR=1.89, P=0.002).
- Una variante de trombospondina 2 (THBS2) 3' UTR demostró un efecto protector contra el infarto de miocardio (OR=0,31, P=0,0018), mientras que una variante de THBS1 sin sentido (N700S) se relacionó con un mayor riesgo de CAD (OR=11,90, P=0,041).
Conclusiones:
- Múltiples variantes nuevas dentro de la familia de genes de la trombospondina muestran una asociación potencial con el infarto de miocardio prematuro familiar.
- Las trombospondinas y las tecnologías genómicas de alto rendimiento merecen una mayor investigación en el contexto de la enfermedad cardíaca isquémica familiar.
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