Immunological and Immunogenetic Changes in Children with Autistic Disorder in Republic of Macedonia

Mirko Zhivko Spiroski

Abstract


AIM: The aim of the study was to present our results about immunological and immunogenetic investigations in children with autistic disorder in Republic of Macedonia.

METHODS: Infantile autism was diagnosed by DSM-IV and ICD-10 criteria. Plasma samples were collected from 35 autistic subjects, and their 21 siblings (biological brothers and sisters) who served as healthy controls. Plasma samples were separated by centrifugation and stored at –20°C until the determination. Plasma immunoglobulin classes (IgM, IgA, IgG) and subclasses (IgG1, IgG2, IgG3, IgG4) were determined using a nephelometer Analyzer. Specific IgA and IgG antibodies against some food allergens, as well as total IgE have been determined with automated immunofluorescent device with solid phase - UniCAP 100 (AmershamBiosciences). HLA DNA typing of class I genes was performed using a Reverse Line Strip method (RLS), and the Sequencing Based Typing method (SBT) was used for typing of class II genes.

RESULTS: Children with autism had significantly higher plasma concentrations of IgG4 (p<0.001) compared to their siblings (healthy brothers or sisters). IgE specific antibodies, as well as plasma concentration of total IgE were statistically significant higher in plasma of participants with autism. Multiple comparisons for the IgA variable have shown statistically significant differences between children with autistic disorder from the fathers and mothers (p < 0.001), and healthy brothers and sisters from the fathers and mothers (p < 0.001). Our results showed significantly increased frequencies of HLA-C*03 (OR = 2.74*; c2= 4.68; p = 0.03), and HLA-DRB1*01 (OR = 3.10*; c2= 6.26; p = 0.012) alleles in autistic patients when compared to the controls.

CONCLUSION: Children with autism have increased plasma concentration of immunoglobulines. Our results demonstrate an association of HLA-C*03 and HLA-DRB1*01 alleles with Macedonian autistic patients. Comparison between healthy children and children with autistic disorder from the same family should be tested for immunoglobulin classes and subclasses in order to avoid differences between generations.


Keywords


autistic disorder; immunoglobulin isotypes; diet; HLA-DNA typing; allele frequencies; Republic of Macedonia

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DOI: http://dx.doi.org/10.3889/seejim.2015.20003

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Copyright (c) 2015 Mirko Zhivko Spiroski




    


Published by: Id Design 2012/DOOEL Skopje, Republic of Macedonia