Pineal gland volume in children with intellectual disability

Area of Science:

• Neuroscience
• Developmental Psychology
• Radiology

Background:

• Pineal gland volume (PGV) changes are observed in psychiatric disorders, affecting sleep and circadian rhythms.
• Intellectual disability (ID) is a neurodevelopmental condition impacting cognitive functions.
• Understanding neuroanatomical differences in ID is crucial for etiological insights.

Purpose of the Study:

• To compare the PGV in children with mild to moderate ID versus healthy controls.
• To investigate the relationship between PGV and intelligence scores in children with ID.
• To explore PGV as a potential biomarker in ID and associated conditions.

Main Methods:

• A multicentre retrospective study involving 40 children with ID and 40 age/sex-matched healthy controls.
• Magnetic resonance imaging (MRI) was used to measure PGV.
• Sociodemographic data and Weschler Intelligence Scale for Children-revised (WISC-R) scores were collected.

Main Results:

• Children with ID exhibited significantly larger PGV compared to controls (p=0.023).
• No significant PGV difference was found between mild and moderate ID groups.
• A positive correlation was observed between WISC-R scores and PGV in the ID group (r=0.313).

Conclusions:

• Increased PGV is associated with intellectual disability (ID) and potentially autism spectrum disorder (ASD).
• PGV may serve as a risk factor in the etiology of ID.
• Further research with larger cohorts is warranted to confirm these findings.