Role of omega-3 fatty acids in brain development and function: potential implications for the pathogenesis and...

Area of Science:

• Neuroscience
• Developmental Biology
• Nutritional Science

Background:

• Docosahexaenoic acid (DHA), a key omega-3 fatty acid, is vital for brain development, particularly during perinatal cortical expansion.
• Reduced DHA accrual in the perinatal brain is associated with neuronal and synaptic pathology, cognitive deficits, and behavioral issues in animal models.

Purpose of the Study:

• To investigate the role of perinatal docosahexaenoic acid (DHA) accrual in neurodevelopment and its potential link to psychopathology.
• To explore the association between preterm birth, DHA deficits, and neurodevelopmental outcomes in humans.

Main Methods:

• Review of animal studies on DHA deficiency and neurodevelopmental outcomes.
• Analysis of human and primate studies on preterm birth, DHA levels, and cognitive function.
• Examination of the relationship between ADHD/schizophrenia, cortical maturation, and dopamine neurotransmission.

Main Results:

• Perinatal DHA deficits correlate with impaired neuronal growth, synaptic pathology, cognitive deficits, and increased anxiety, aggression, and depression.
• Preterm birth is linked to reduced fetal cortical DHA accrual, impaired gray matter maturation, attention deficits, and higher risks for ADHD and schizophrenia.
• Individuals with ADHD or schizophrenia show deficits in cortical gray matter maturation, and effective treatments enhance dopamine neurotransmission.

Conclusions:

• Perinatal deficits in brain DHA accrual may be a preventable risk factor for neurodevelopmental disorders.
• DHA supplementation shows potential for improving visual acuity and cognitive outcomes in infants.
• Addressing perinatal DHA levels could mitigate the risk for subsequent psychopathology.