Altered vascular phenotype in autism: correlation with oxidative stress

Area of Science:

• Biochemistry
• Pediatrics
• Neurology

Background:

• Autism Spectrum Disorder (ASD) is a complex neurodevelopmental condition impacting communication and social interaction.
• Previous research suggests biochemical alterations, including abnormal platelet reactivity and blood flow, in children with autism.

Purpose of the Study:

• To investigate the vascular phenotype in children diagnosed with autism.
• To assess markers of oxidative stress, platelet activation, and endothelium activation in autistic children.

Main Methods:

• Urinary levels of isoprostane F(2alpha)-VI (lipid peroxidation marker), 2,3-dinorthromboxane B(2) (platelet activation marker), and 6-keto-prostaglandin F(1alpha) (endothelium activation marker) were quantified.
• Gas chromatography-mass spectrometry was employed for precise biomarker measurement.
• The study included children with a clinical diagnosis of autism and healthy control participants.

Main Results:

• Children with autism demonstrated significantly elevated urinary levels of isoprostane F(2alpha)-VI, 2,3-dinorthromboxane B(2), and 6-keto-prostaglandin F(1alpha) compared to controls.
• A direct correlation was observed between lipid peroxidation levels and the ratios of the vascular biomarkers.
• These findings indicate enhanced oxidative stress and vascular activation in the autism cohort.

Conclusions:

• The results suggest that heightened oxidative stress, alongside platelet and vascular endothelium activation, may play a role in the pathogenesis and clinical presentation of autism.
• These vascular biomarkers could be potential indicators for further research into autism's underlying mechanisms.