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Aminoacylase 1 deficiency associated with autistic behavior.
MedLine Citation:
PMID:  20480396     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Aminoacylase 1 (ACY1) deficiency is a recently described inborn error of metabolism. Most of the patients reported so far have presented with rather heterogeneous neurologic symptoms. At this moment, it is not clear whether ACY1 deficiency represents a true metabolic disease with a causal relationship between the enzyme defect and the clinical phenotype or merely a biochemical abnormality. Here we present a patient identified in the course of selective screening for inborn errors of metabolism (IEM). The patient was diagnosed with autistic syndrome and admitted to the Children's Memorial Health Institute (CMHI) for metabolic evaluation. Organic acid analysis using gas chromatography-mass spectrometry (GC-MS) revealed increased urinary excretion of several N-acetylated amino acids, including the derivatives of methionine, glutamic acid, alanine, glycine, leucine, isoleucine, and valine. In Epstein-Barr virus (EBV)-transformed lymphoblasts, ACY1 activity was deficient. The mutation analysis showed a homozygous c.1057C>T transition, predicting a p.Arg353Cys substitution. Both parents were heterozygous for the mutation and had normal results in the organic acid analysis using GC-MS. This article reports the findings of an ACY1-deficient patient presenting with autistic features.
Authors:
Anna Tylki-Szymanska; Wanda Gradowska; Anke Sommer; Angelina Heer; Melanie Walter; Christina Reinhard; Heymut Omran; Jörn Oliver Sass; Agnieszka Jurecka
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Publication Detail:
Type:  Journal Article     Date:  2010-05-18
Journal Detail:
Title:  Journal of inherited metabolic disease     Volume:  33 Suppl 3     ISSN:  1573-2665     ISO Abbreviation:  J. Inherit. Metab. Dis.     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2013-08-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7910918     Medline TA:  J Inherit Metab Dis     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  211-4     Citation Subset:  IM    
Affiliation:
Department of Metabolic Diseases, Endocrinology and Diabetology, The Children's Memorial Health Institute, Al. Dzieci Polskich 20, 04-730, Warsaw, Poland.
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