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Long-chain 3-hydroxyacyl-coenzyme A dehydrogenase deficiency : ウィキペディア英語版 | Long-chain 3-hydroxyacyl-coenzyme A dehydrogenase deficiency
Long-chain 3-hydroxyacyl-coenzyme A dehydrogenase deficiency, often shortened to LCHAD deficiency, is a rare autosomal recessive fatty acid oxidation disorder that prevents the body from converting certain fats into energy. This can become life-threatening, particularly during periods of fasting. ==Genetics==
Mutations in the ''HADHA'' gene lead to inadequate levels of an enzyme called long-chain 3-hydroxyacyl-coenzyme A (CoA) dehydrogenase, which is part of a protein complex known as mitochondrial trifunctional protein. Long-chain fatty acids from food and body fat cannot be metabolized and processed without sufficient levels of this enzyme. As a result, these fatty acids are not converted to energy, which can lead to characteristic features of this disorder, such as lethargy and hypoglycemia. Long-chain fatty acids or partially metabolized fatty acids may build up in tissues and damage the liver, heart, retina, and muscles, causing more serious complications.
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