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Inflammatory Activity in Autism Spectrum Disorder.

I Tonhajzerova1, I Ondrejka, M Mestanik

  • 1Department of Physiology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Mala Hora 4, 036 01, Martin, Slovakia.

Advances in Experimental Medicine and Biology
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This study found elevated levels of interleukin-8 (IL-8), a pro-inflammatory cytokine, in children with autism spectrum disorder (ASD). This suggests a potential link between immune system inflammation and ASD development.

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Area of Science:

  • Neuroscience
  • Immunology
  • Pediatrics

Background:

  • Autism spectrum disorder (ASD) is a complex neurodevelopmental condition impacting communication and behavior.
  • Emerging research suggests immune dysregulation may play a role in ASD pathogenesis.
  • Investigating inflammatory markers in children with ASD is crucial for understanding potential biological mechanisms.

Purpose of the Study:

  • To test the hypothesis that children with ASD exhibit heightened inflammatory activity.
  • To compare pro-inflammatory cytokine levels and oxidative stress markers between children with ASD and healthy controls.

Main Methods:

  • The study included 15 children diagnosed with ASD and 20 age/gender-matched healthy controls.
  • Blood samples were analyzed for pro-inflammatory cytokines: tumor necrosis factor alpha (TNF-α), interleukin 1ß (IL-1ß), and interleukin 8 (IL-8).
  • Thiobarbituric acid reactive substances (TBARS) were measured as an indicator of oxidative stress.

Main Results:

  • Children with ASD showed significantly higher plasma levels of interleukin-8 (IL-8) compared to the control group (p=0.003).
  • Levels of TNF-α, IL-1ß, and TBARS did not differ significantly between the ASD and control groups.
  • These findings indicate a specific inflammatory alteration in children with ASD.

Conclusions:

  • The study provides evidence for a distinct pro-inflammatory immune dysfunction in children with autism spectrum disorder.
  • Elevated IL-8 levels may represent a potential biomarker or contributing factor in ASD.
  • Further research into immune pathways is warranted to elucidate the role of inflammation in ASD.