Alteration of mitochondrial function in the livers of mice with glycogen branching enzyme deficiency.
Biochimie
; 186: 28-32, 2021 Jul.
Article
en En
| MEDLINE
| ID: mdl-33857563
ABSTRACT
Glycogen storage disease type IV (GSD IV) is caused by mutations in the glycogen branching enzyme gene (GBE1) that lead to the accumulation of aberrant glycogen in affected tissues, mostly in the liver. To determine whether dysfunctional glycogen metabolism in GSD IV affects other components of cellular bioenergetics, we studied mitochondrial function in heterozygous Gbe1 knockout (Gbe1+/-) mice. Mitochondria isolated from the livers of Gbe1+/- mice showed elevated respiratory complex I activity and increased reactive oxygen species production, particularly by respiratory chain complex III. These observations indicate that GBE1 deficiency leads to broader rearrangements in energy metabolism and that the mechanisms underlying GSD IV pathogenesis may include more than merely mechanical cell damage caused by the presence of glycogen aggregates.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Mitocondrias Hepáticas
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Sistema de la Enzima Desramificadora del Glucógeno
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Enfermedad del Almacenamiento de Glucógeno Tipo IV
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Complejo III de Transporte de Electrones
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Proteínas Mitocondriales
Límite:
Animals
Idioma:
En
Revista:
Biochimie
Año:
2021
Tipo del documento:
Article