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Deficiencia de galactosa mutarotasa como tipo IV de galactosemia
Yoichi Wada1,2, Yu Aihara3, Yasuko Mikami-Saito3
1Department of Medical Science and Innovation, SiRIUS Institute of Medical Research, Tohoku University, Sendai, Japan. yoichi.wada.e1@tohoku.ac.jp.
Journal of human genetics
|December 15, 2025
Resumen
La deficiencia de galactosa mutarotasa (GALM), un tipo de galactosemia, puede causar cataratas. La restricción temprana de lactosa puede prevenir o revertir estas cataratas, especialmente en bebés.
Área de la Ciencia:
- Bioquímica
- Genética
- Trastornos Metabólicos
Sus antecedentes:
- La galactosa es un monosacárido vital para la energía y la glicosilación.
- La vía de Leloir metaboliza la galactosa, involucrando cuatro enzimas clave.
- La galactosa mutarotasa (GALM) es crucial para la conversión de los anómeros de galactosa.
Objetivo del estudio:
- Revisar el conocimiento actual sobre la deficiencia de GALM.
- Enfatizar la prevención y reversibilidad de las cataratas mediante la restricción de lactosa.
- Explorar mecanismos moleculares, aspectos clínicos e investigación futura.
Principales métodos:
- Revisión y síntesis de la literatura existente.
- Análisis de mecanismos moleculares y presentaciones clínicas.
- Evaluación de estrategias de diagnóstico y riesgos de portadores.
Principales resultados:
- La deficiencia de GALM es el cuarto tipo de galactosemia.
- Pueden ocurrir cataratas, pero a menudo son más leves que en otras galactosemias.
- La restricción temprana de lactosa es clave para prevenir/revertir las cataratas.
Conclusiones:
- El manejo de la deficiencia de GALM se centra en la restricción temprana de lactosa.
- Se necesita más investigación sobre los riesgos de portadores y las implicaciones más amplias.
- La comprensión de GALM es vital para el cribado neonatal y la atención clínica.
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