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El diagnóstico genético de la enfermedad de Gaucher

P K Mistry¹, S J Smith, M Ali

¹Department of Medicine, University of Cambridge, Addenbrooke's Hospital, UK.

Lancet (London, England)

|April 11, 1992

Resumen

La enfermedad de Gaucher, un trastorno hereditario, es causada por mutaciones en el gen de la glucocerebrosidasa. El análisis del sistema de mutación refractaria de amplificación (ARMS) identificó mutaciones específicas en pacientes judíos y no judíos, ayudando al diagnóstico y la detección.

Área de la Ciencia:

Genética La genética.
Biología Molecular Biología Molecular
La bioquímica es la bioquímica.

Sus antecedentes:

La enfermedad de Gaucher es un trastorno metabólico hereditario.
Causada por mutaciones en el gen de la glucocerebrosidasa.
Necesidad de mejorar los métodos de diagnóstico y detección de la enfermedad de Gaucher.

Objetivo del estudio:

Investigar la base molecular de la enfermedad de Gaucher.
Identificar mutaciones específicas en el gen de la glucocerebrosidasa en pacientes.
Evaluar la utilidad del sistema de mutación refractaria de amplificación (ARMS) para el diagnóstico de la enfermedad de Gaucher.

Principales métodos:

Estudió a doce pacientes no relacionados con la enfermedad de Gaucher.
Utilizado el sistema de mutación refractaria de amplificación (ARMS) para el análisis genético.
Primeros de reacción en cadena de la polimerasa (PCR) diseñados para detectar mutaciones en la glucocerebrosidasa y diferenciarlos de los pseudogenes.

Principales resultados:

Se identificaron mutaciones específicas: nucleótido 1226 (N370S) y 84GG en pacientes judíos asquenazíes.
Se encontraron mutaciones en los nucleótidos 1448 (L444P) y 1504 (R463C) en pacientes no judíos.
1448 y 1504 mutaciones asociadas con enfermedad severa y de rápido progreso y con implicación neurológica.

Conclusiones:

ARMS es eficaz para la detección directa de las mutaciones comunes de glucocerebrosidasa.
Este método facilita el asesoramiento genético y la detección de la enfermedad de Gaucher.
El análisis molecular ayuda a comprender la gravedad de la enfermedad y las variaciones étnicas.

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