Neuroinflammation as a risk factor for attention deficit hyperactivity disorder

Area of Science:

• Neuroscience
• Immunology
• Pediatrics

Background:

• Attention Deficit Hyperactivity Disorder (ADHD) is a common pediatric neurodevelopmental disorder with complex etiology.
• Understanding ADHD's underlying mechanisms is crucial due to its prevalence and treatment controversies.
• Neuroinflammation is an emerging area of interest in ADHD research.

Purpose of the Study:

• To review and synthesize current evidence suggesting a role for neuroinflammation in ADHD pathophysiology.
• To explore the links between ADHD, inflammatory conditions, and environmental factors.

Main Methods:

• Review of human studies examining ADHD comorbidity with inflammatory disorders, serum cytokines, and genetic associations.
• Analysis of animal models investigating maternal immune activation and its effects on brain development and behavior.
• Examination of research on prenatal inflammation and its impact on offspring brain structure and neurotransmitter systems.

Main Results:

• Comorbidity of ADHD with inflammatory/autoimmune disorders is higher than chance.
• Studies show associations between ADHD and elevated serum cytokines, and specific gene polymorphisms.
• Animal models demonstrate that prenatal inflammation affects brain development and neurotransmitter systems (dopaminergic, serotonergic, glutamatergic) in ways consistent with ADHD.

Conclusions:

• Accumulating evidence from human and animal studies supports a potential role for neuroinflammation in ADHD pathophysiology.
• Further research is needed to confirm this association and elucidate underlying mechanisms.
• Confirmation could lead to novel therapeutic interventions for ADHD.