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Assessing Murine Resistance Artery Function Using Pressure Myography
Published on: June 7, 2013
Aldosteronismo primario: hipertensión con una base genética.
R D Gordon1, S A Klemm, T J Tunny
1University Department of Medicine, Greenslopes Hospital, Brisbane, Queensland, Australia.
Lancet (London, England)
|July 18, 1992
Resumen
El aldosteronismo primario es un espectro de enfermedades genéticas, con nuevos subtipos identificados. El cribado bioquímico lo revela.
Área de la Ciencia:
- Endocrinología Endocrinología.
- Genética La genética.
- Biología Molecular Biología Molecular
Sus antecedentes:
- El aldosteronismo primario es cada vez más reconocido debido a los avances en el cribado bioquímico.
- Los descubrimientos genéticos han identificado nuevos subtipos y aclarado la base molecular de los existentes.
Objetivo del estudio:
- Describir nuevos subtipos de aldosteronismo primario.
- Para dilucidar la base genética de los subtipos de aldosteronismo primario.
- Proponer un espectro unificado de aldosteronismo primario basado en la diversidad genética y morfológica.
Principales métodos:
- Cribado bioquímico (razón aldosterona/renina) para el diagnóstico precoz.
- Análisis genético para identificar mutaciones y funciones genéticas.
- Examen histopatológico del tejido suprarrenal.
Principales resultados:
- Se identificó una variedad supresora de glucocorticoides (FHI) con un gen mutante que afecta la regulación de la síntesis de aldosterona.
- Se describen adenomas productores de aldosterona sensibles a la angiotensina II (APA sensibles a la AII) con una composición celular distinta y una producción de esteroides.
- Caracterizó una nueva forma familiar (FHII) de aldosteronismo primario que involucra tumores y carece de supresividad con glucocorticoides.
- Se demostró que los subtipos de aldosteronismo primario exhiben respuestas variables al ACTH y a la angiotensina II.
Conclusiones:
- El aldosteronismo primario abarca un espectro de trastornos genéticos que se manifiestan como hiperplasia o neoplasia.
- La heterogeneidad morfológica y genética subyace a las diversas presentaciones bioquímicas y clínicas del aldosteronismo primario.
- La investigación adicional sobre los subtipos genéticos perfeccionará el diagnóstico y el manejo del aldosteronismo primario.
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