Changes in adipokine levels in autism spectrum disorders

Area of Science:

• Immunology
• Neuroscience
• Metabolic disorders

Background:

• The precise causes of autism spectrum disorders (ASD) remain unclear, but immune system dysfunction is increasingly implicated.
• Cytokines, immune signaling molecules, have been associated with ASD, prompting investigation into related substances like adipokines.
• Adipokines, secreted by adipose tissue, can exert systemic effects and are potential biomarkers for various conditions.

Purpose of the Study:

• To compare plasma levels of three adipokines—adiponectin, leptin, and resistin—between individuals with ASD and healthy controls.
• To investigate the relationship between adipokine levels and the severity of autistic symptoms, as measured by the Social Responsiveness Scale (SRS).

Main Methods:

• Plasma samples were collected from 30 individuals with ASD and 19 healthy controls.
• Adiponectin, leptin, and resistin levels were quantified using a commercial assay kit.
• The Social Responsiveness Scale (SRS) was administered to assess the severity of autistic symptoms.

Main Results:

• Individuals with ASD exhibited significantly lower resistin levels and higher leptin levels compared to controls.
• Plasma adiponectin levels were not significantly different between the ASD group and controls.
• A negative correlation was observed between adiponectin levels and the severity of autistic symptoms indicated by SRS scores.

Conclusions:

• Plasma adipokine profiles are altered in individuals with autism spectrum disorders.
• These findings suggest the presence of systemic biological changes associated with ASD.
• Adipokines may serve as potential biomarkers indicative of the disease process in ASD.