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Medical Definition of Methylmalonic aciduria
1. Excretion of excessive amounts of methylmalonic acid in urine owing to deficient activity of methylmalonyl-CoA mutase or deficient cobalamin reductase. Two types occur: 1) an inborn error of metabolism resulting in severe ketoacidosis shortly after birth, with long-chain urinary ketones; autosomal recessive inheritance; 2) acquired, a type due to vitamin B12 deficiency due to defective synthesis of adenosylcobalamin. (05 Mar 2000)
Lexicographical Neighbors of Methylmalonic Aciduria
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