Plasma androgens in autism

Area of Science:

• Endocrinology
• Neurodevelopmental Disorders
• Autism Research

Background:

• Autism spectrum disorder (ASD) is a complex neurodevelopmental condition.
• Hormonal imbalances, particularly in androgens like testosterone and dehydroepiandrosterone sulfate (DHEA-S), have been investigated in relation to ASD.
• Previous research has yielded inconsistent findings regarding androgen levels in individuals with autism.

Purpose of the Study:

• To investigate and compare plasma levels of testosterone and dehydroepiandrosterone sulfate (DHEA-S) in male individuals with autism, intellectual disability, and typically developing controls.
• To explore potential correlations between androgen levels, serotonin, and pubertal status in these groups.

Main Methods:

• Measurement of plasma testosterone and DHEA-S levels in prepubertal and postpubertal male subjects across three groups: autistic, mentally retarded/cognitively impaired (MR), and normal controls (NC).
• Statistical analysis to compare hormone levels between groups and assess correlations between testosterone and whole blood serotonin (5-HT).

Main Results:

• No significant differences in mean plasma testosterone or DHEA-S levels were found between postpubertal autistic and normal control groups.
• Prepubertal autistic, MR, and NC individuals also showed no significant group differences in these androgens.
• Prepubertal MR individuals with cerebral palsy exhibited elevated plasma DHEA-S levels compared to controls.
• Significant negative correlations were observed between testosterone and whole blood serotonin (5-HT) in the combined and autistic groups.

Conclusions:

• Altered secretion of androgens, including testosterone and DHEA-S, does not appear to be a common characteristic of autism spectrum disorder.
• Abnormalities in adrenal androgen secretion may be associated with cerebral palsy.
• The relationship between testosterone, puberty, and serotonin warrants further investigation.