Elevated methylmalonic acidemia (MMA) screening markers in Hispanic and preterm newborns

Methylmalonic acidemia

The authors provide an overview of the hereditary methylmalonic acidemias, a group of metabolic disorders with varied clinical presentations. This includes the most severe form of L-methylmalonyl-CoA mutase deficiency, termed mut(o) methylmalonic acidemia, which, together with the less severe deficiencies of L-methylmalonyl-CoA mutase, are the most common causes of methylmalonic acidemia. They ...

Methylmalonic Acidemia.

Methylmalonic Acidemia (MMA) is an inborn error of metabolism that results in accumulation of methylmalonic acid in blood and increased excretion in urine. The effects of MMA vary from mild to life threatening and it usually presents in early infancy. Affected infants can have vomiting, dehydration, hypotonia, developmental delay and failure to thrive. The emergency treatment of the newborn wit...

Optic neuropathy in methylmalonic acidemia and propionic acidemia.

BACKGROUND Methylmalonic acidemia (MMA) and propionic acidemia (PA) are rare hereditary disorders of protein metabolism, manifesting early in life with ketoacidosis and encephalopathy and often resulting in chronic complications. Optic neuropathy (ON) has been increasingly recognised in both conditions, mostly through isolated case reports or small cases series. We here report the clinical feat...

Association of Methylmalonic Acidemia and Erythema Nodosum

CT and MR studies of methylmalonic acidemia.

Methylmalonic acidemia (MMA) is a disorder of organic acid metabolism. It consists of a group of biochemically and genetically distinct disorders that produces a block in the conversion of methylmalonyi-CoA to succinyi-CoA, with consequent accumulation of methylmalonate in the blood and urine, secondary hyperammonemia, and often severe ketoacidosis [1]. Methylmalonic acid is part of the organic...