N-Methyl-d-aspartate (NMDA) receptor antibody in relation to autism spectrum disorder (ASD): presence and association with symptom profile

Abstract Background Several studies pointed to immune dysregulation abnormalities linked to autism spectrum disorders (ASD). Of those, several autoantibodies had been identified. Recent findings of N-methyl d-aspartate (NMDA) antibodies in autoimmune encephalitis suggested that it caused symptoms li...

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Autores principales: Heba Hamed Elshahawi, Ghada Refaat Amin Taha, Hanan Mohamed Ezzeldin Azzam, Reem H. El Ghamry, Ahmed Adel Mohammad Abdelgawad, Mohammad Abdullah Ahmad Abdullah Elshiekh
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Publicado: SpringerOpen 2021
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spelling oai:doaj.org-article:1f5c8db2ad8749a0a0df1a79298ecae42021-11-07T12:08:51ZN-Methyl-d-aspartate (NMDA) receptor antibody in relation to autism spectrum disorder (ASD): presence and association with symptom profile10.1186/s43045-021-00141-52090-5416https://doaj.org/article/1f5c8db2ad8749a0a0df1a79298ecae42021-11-01T00:00:00Zhttps://doi.org/10.1186/s43045-021-00141-5https://doaj.org/toc/2090-5416Abstract Background Several studies pointed to immune dysregulation abnormalities linked to autism spectrum disorders (ASD). Of those, several autoantibodies had been identified. Recent findings of N-methyl d-aspartate (NMDA) antibodies in autoimmune encephalitis suggested that it caused symptoms like autistic regression. Thus, the purpose of the study was to test for the presence of anti-NMDAR antibodies in the ASD disorder population and to correlate this with the clinical findings. Results Eighty-seven autistic children, 4–12 years old, were enrolled in the study and were matched with sixty typically developing children used as controls. The diagnosis of cases was confirmed by ADOS-2 and clinical evaluation. None of the control children had positive anti-NMDAR antibodies, while 26.4% (23 children) of the patients’ group were positive for serum anti-NMDA receptor antibodies (> 200 pg/ml, p = 0.0157). The positive anti-NMDAR antibody was statistically correlated with better speech stage (p = 0.017), more severe stereotyped behavior (p ≤ 0.001), and abnormal EEG findings (p = 0.025). Conclusions There is a possibility of the presence of anti-NMDAR antibodies in the autism spectrum disorder population with certain characteristics, especially the severity of the stereotyped behaviors.Heba Hamed ElshahawiGhada Refaat Amin TahaHanan Mohamed Ezzeldin AzzamReem H. El GhamryAhmed Adel Mohammad AbdelgawadMohammad Abdullah Ahmad Abdullah ElshiekhSpringerOpenarticleAutismAutoimmuneAutoantibodiesNMDA receptorPsychiatryRC435-571ENMiddle East Current Psychiatry, Vol 28, Iss 1, Pp 1-8 (2021)
institution DOAJ
collection DOAJ
language EN
topic Autism
Autoimmune
Autoantibodies
NMDA receptor
Psychiatry
RC435-571
spellingShingle Autism
Autoimmune
Autoantibodies
NMDA receptor
Psychiatry
RC435-571
Heba Hamed Elshahawi
Ghada Refaat Amin Taha
Hanan Mohamed Ezzeldin Azzam
Reem H. El Ghamry
Ahmed Adel Mohammad Abdelgawad
Mohammad Abdullah Ahmad Abdullah Elshiekh
N-Methyl-d-aspartate (NMDA) receptor antibody in relation to autism spectrum disorder (ASD): presence and association with symptom profile
description Abstract Background Several studies pointed to immune dysregulation abnormalities linked to autism spectrum disorders (ASD). Of those, several autoantibodies had been identified. Recent findings of N-methyl d-aspartate (NMDA) antibodies in autoimmune encephalitis suggested that it caused symptoms like autistic regression. Thus, the purpose of the study was to test for the presence of anti-NMDAR antibodies in the ASD disorder population and to correlate this with the clinical findings. Results Eighty-seven autistic children, 4–12 years old, were enrolled in the study and were matched with sixty typically developing children used as controls. The diagnosis of cases was confirmed by ADOS-2 and clinical evaluation. None of the control children had positive anti-NMDAR antibodies, while 26.4% (23 children) of the patients’ group were positive for serum anti-NMDA receptor antibodies (> 200 pg/ml, p = 0.0157). The positive anti-NMDAR antibody was statistically correlated with better speech stage (p = 0.017), more severe stereotyped behavior (p ≤ 0.001), and abnormal EEG findings (p = 0.025). Conclusions There is a possibility of the presence of anti-NMDAR antibodies in the autism spectrum disorder population with certain characteristics, especially the severity of the stereotyped behaviors.
format article
author Heba Hamed Elshahawi
Ghada Refaat Amin Taha
Hanan Mohamed Ezzeldin Azzam
Reem H. El Ghamry
Ahmed Adel Mohammad Abdelgawad
Mohammad Abdullah Ahmad Abdullah Elshiekh
author_facet Heba Hamed Elshahawi
Ghada Refaat Amin Taha
Hanan Mohamed Ezzeldin Azzam
Reem H. El Ghamry
Ahmed Adel Mohammad Abdelgawad
Mohammad Abdullah Ahmad Abdullah Elshiekh
author_sort Heba Hamed Elshahawi
title N-Methyl-d-aspartate (NMDA) receptor antibody in relation to autism spectrum disorder (ASD): presence and association with symptom profile
title_short N-Methyl-d-aspartate (NMDA) receptor antibody in relation to autism spectrum disorder (ASD): presence and association with symptom profile
title_full N-Methyl-d-aspartate (NMDA) receptor antibody in relation to autism spectrum disorder (ASD): presence and association with symptom profile
title_fullStr N-Methyl-d-aspartate (NMDA) receptor antibody in relation to autism spectrum disorder (ASD): presence and association with symptom profile
title_full_unstemmed N-Methyl-d-aspartate (NMDA) receptor antibody in relation to autism spectrum disorder (ASD): presence and association with symptom profile
title_sort n-methyl-d-aspartate (nmda) receptor antibody in relation to autism spectrum disorder (asd): presence and association with symptom profile
publisher SpringerOpen
publishDate 2021
url https://doaj.org/article/1f5c8db2ad8749a0a0df1a79298ecae4
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