Abstract
Mutations in PGM1 (phosphoglucomutase 1) cause Glycogen Storage Disease type XIV, which is also a congenital disorder of protein N-glycosylation. It presents throughout life as myopathy with additional systemic symptoms. We report the effect of oral galactose treatment during five months in a patient with biochemically and genetically confirmed PGM1 deficiency. The 12-minute-walking distance increased by 225 m (65%) and transferrin glycosylation was restored to near-normal levels. The exercise assessments showed a severe exercise intolerance due to a block in skeletal muscle glycogenolytic capacity and that galactose treatment tended to normalize skeletal muscle substrate use from fat to carbohydrates during exercise.
Original language | English |
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Journal | Neuromuscular Disorders |
Volume | 27 |
Issue number | 4 |
Pages (from-to) | 370-376 |
ISSN | 0960-8966 |
DOIs | |
Publication status | Published - 1 Apr 2017 |
Keywords
- Exercise/physiology
- Galactose/pharmacology
- Glycogen Storage Disease/drug therapy
- Humans
- Male
- Middle Aged