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[Aciduria argininosuccínica: informe de un caso de inicio neonatal].

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Urea cycle defects are inborn errors of metabolism produced by a defect in one of the enzymes responsible for the detoxification of ammonia, which generates its accumulation in the body.… Click to show full abstract

Urea cycle defects are inborn errors of metabolism produced by a defect in one of the enzymes responsible for the detoxification of ammonia, which generates its accumulation in the body. The clinical manifestations can present early, with high morbidity and mortality, or late onset. The heterogeneity of the symptoms and the lack of clinical suspicion in neonates leads to a wrong diagnosis, which can be confused with neonatal sepsis or cerebral hemorrhages. The increase in plasma ammonia in the biochemical examination orients his diagnosis towards a defect of the urea cycle. Argininosuccinic aciduria is the third most frequent defect of the urea cycle, and is caused by a argininosuccinate lyase deficiency. A neonatal onset case report is presented. The objective is to emphasize its diagnostic suspicion, and to propose early diagnostic tools such as its incorporation into the neonatal metabolic screening.

Keywords: aciduria argininosucc; nica informe; caso inicio; urea cycle; argininosucc nica; informe caso

Journal Title: Archivos argentinos de pediatria
Year Published: 2021

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