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Front. Pediatr. | doi: 10.3389/fped.2018.00264

CHILDREN WITH AUTISM SPECTRUM DISORDER WITH REGRESSION EXHIBIT A DIFFERENT PROFILE IN PLASMA CYTOKINES AND ADHESION MOLECULES COMPARED TO CHILDREN WITHOUT SUCH REGRESSION

  • 1Hospital Universitario Reina Sofía, Spain
  • 2Instituto Maimonides de Investigación Biomédica de Cordoba (IMIBIC), Spain
  • 3Instituto de Nutrición y Tecnología de Alimentos, Centro de Investigación Biomédica, Universidad de Granada, Spain

Background: In the etiopathogenesis of autism spectrum disorder (ASD), it has been suggested that a proinflammatory condition, as well as an alteration in adhesion molecules in the early stages of neurodevelopment, may play a role in the pathophysiology of the disorder. This study set out to evaluate the plasma levels of certain inflammatory cytokines, adhesion molecules and growth factors in a sample of pediatric patients with ASD and compare them to the levels in a control group of healthy children.
Methods: 54 children (45 males and nine females) aged 2-6, who were diagnosed with ASD, and a control group of 54 typically-developing children of similar ages were selected. The diagnosis of ASD was carried out in accordance with the DSM-5 criteria and the data obtained from a developmental semi-structured clinical interview and the ADOS evaluation test. Additional testing was carried out to identify the children’s developmental level and severity of ASD symptomatology. Patients with ASD were further divided into two subgroups based on developmental parameters: ASD children with neurodevelopmental regression (AMR) and ASD children without neurodevelopmental regression (ANMR). Analyses of plasma molecules, such as cathepsin, IL1β, IL6, IL8, MPO, RANTES, MCP, BDNF, PAI NCAM, sICAM, sVCAM and NGF, were performed.
Results: Higher levels of NGF were observed in the ASD group compared with the levels in the control group (p<0.05). However, in the analysis of the ASD subgroups, lower plasma levels of NCAM and higher levels of NGF were found in the group of ASD children without developmental regression compared to the levels in the group of typically-developing children.
Conclusions: These results suggest differences that could be related to different pathophysiological mechanisms in ASD. There is not a specific profile for the expression of relevant plasma cytokines, adhesion molecules or growth factors in children with ASD compared with that in typically-developing children. However, in the ANMR and AMR subgroups, some of the adhesion molecules and neuronal growth factors show differences that may be related to synaptogenesis.

Keywords: Autism Spectrum Disorder, cell adhesion molecules;, Children, Cytokines, Neurodevelopmental regression

Received: 03 Jul 2018; Accepted: 05 Sep 2018.

Edited by:

Paolo Curatolo, University of Rome Tor Vergata, Italy

Reviewed by:

Leonardo Emberti Gialloreti, Università degli Studi di Roma Tor Vergata, Italy
Romina Moavero, Bambino Gesù Ospedale Pediatrico (IRCCS), Italy  

Copyright: © 2018 Gomez_Fernandez, de la Torre_Aguilar, Gil_Campos, Flores_Rojas, Cruz_Rico, Martin_Borreguero and Perez Navero. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Prof. Mercedes Gil_Campos, Hospital Universitario Reina Sofía, Cordoba, 14004, Spain, mercedes_gil_campos@yahoo.es