Dietary Management of the Ketogenic Glycogen Storage Diseases
Abstract The glycogen storage diseases (GSDs) comprise a group of rare inherited disorders of glycogen metabolism. The hepatic glycogenolytic forms of these disorders are typically associated with hypoglycemia and hepatomegaly. For GSD I, secondary metabolic disturbances include fasting hyperlactatemia, hyperuricemia, and hyperlipidemia. Glycogen storage disease III is caused by reduced activity of the debrancher enzyme, GSD VI by phosphorylase, and GSD IX by phosphorylase kinase. It has often been reported that the non-GSD I group of disorders have a benign course. However, myopathy, cardiomyopathy, and cirrhosis have been reported significant clinical morbidities associated with GSD III and IX in particular. There have been a range of reports indicating high-protein diets, high-fat diets, medium chain triglyceride (MCT), modified Atkins diet, and therapeutic ketones as rescuing severe phenotypes of GSD III in particular. The etiology of these severe phenotypes has not been defined. Cases presented in this report indicate potential harm from excessive simple sugar use in GSD IX C. Review of the literature indicates that most interventions have reduced the glycemic load and provide alternate substrates for energy in rescue situations. Prevention of complications is most likely to occur with a mixed balanced low glycemic index diet potentially with relative increases in protein.
Main Authors: | Bhattacharya,Kaustuv, Pontin,Jennifer, Thompson,Sue |
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Format: | Digital revista |
Language: | English |
Published: |
Latin American Society Inborn Errors and Neonatal Screening (SLEIMPN); Instituto Genética para Todos (IGPT)
2016
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Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2326-45942016000100316 |
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