Sodium phenylbutyrate improved the clinical state in an adult patient with arginase 1 deficiency.

Autor: Matsufuji M; Yanagawa Institute for Developmental Disabilities, Japan. Electronic address: m.mayumi@leaf.ocn.ne.jp., Takeshita E; Yanagawa Institute for Developmental Disabilities, Japan., Nakashima M; Yanagawa Institute for Developmental Disabilities, Japan., Watanabe Y; Department of Pediatrics and Child Health, Kurume University School of Medicine, Japan., Fukui K; Department of Pediatrics and Child Health, Kurume University School of Medicine, Japan., Hanai T; Yanagawa Institute for Developmental Disabilities, Japan., Ishibashi H; Yanagawa Institute for Developmental Disabilities, Japan., Takashima S; Yanagawa Institute for Developmental Disabilities, Japan.
Jazyk: angličtina
Zdroj: Brain & development [Brain Dev] 2020 Feb; Vol. 42 (2), pp. 231-235. Date of Electronic Publication: 2019 Oct 08.
DOI: 10.1016/j.braindev.2019.09.002
Abstrakt: An adult female patient was diagnosed with arginase 1 deficiency (ARG1-D) at 4 years of age, and had been managed with protein restriction combined with sodium benzoate therapy. Though the treatment was successful in ameliorating hyperammonemia, hyperargininemia persisted. After being under control with a strict restriction of dietary protein, severe fall of serum albumin levels appeared and her condition became strikingly worsened. However, after sodium phenylbutyrate (NaPB) therapy was initiated, the clinical condition and metabolic stability was greatly improved. Current management of ARG1-D is aimed at lowering plasma arginine levels. The nitrogen scavengers, such as NaPB can excrete the waste nitrogen not through the urea cycle but via the alternative pathway. The removal of nitrogen via alternative pathway lowers the flux of arginine in the urea cycle. Thereby, the clinical complications due to insufficient amount of protein intake can be prevented. Thus, NaPB therapy can be expected as a useful therapeutic option, particularly in patients with ARG1-D.
(Copyright © 2019. Published by Elsevier B.V.)
Databáze: MEDLINE
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