The objective of this project is to define whether nutritional supplements (ornithine alpha-ketoglutarate, glutamine, or citrate) capable of filling-up the citric acid cycle (anaplerotic therapy) can improve hyperammonemia, glutamine levels, and outcome in patients with propionic acidemia. Ornithine alpha-ketoglutarate, glutamine, and citrate are commonly used as nutritional supplements specially by athletes to increase muscle strength. They can be mixed with formula or other foods.
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Define safety and efficacy of nutritional therapy with these investigational products: L-Ornithine alpha-ketoglutarate, Glutamine, or disodium citrate (anaplerotic therapy) on hyperammonemia and outcome in patients with propionic acidemia.
Timeframe: end of study