Neurodevelopmental liabilities in schizophrenia and affective disorders

Area of Science:

• Neuroscience
• Psychiatry
• Developmental Psychology

Background:

• Schizophrenia and affective disorders may originate from early pre- and post-natal developmental events.
• Evidence suggests a second-trimester insult could increase schizophrenia risk, supported by observations like maternal influenza A.
• Animal models demonstrate how early insults impact later behavioral functions.

Purpose of the Study:

• To explore the neurodevelopmental origins of schizophrenia and affective disorders.
• To investigate the link between early life insults and later psychopathology.
• To understand the neurobiological mechanisms underlying these conditions.

Main Methods:

• Review of existing evidence on schizophrenia and affective disorders.
• Analysis of animal models simulating early life stress and insults (e.g., excitotoxic damage, social isolation, maternal deprivation).
• Examination of neurodevelopmental markers and hypothalamic-pituitary-adrenal (HPA) axis function.

Main Results:

• Early insults, like second-trimester events or postnatal hippocampal damage, are associated with schizophrenia development.
• Animal models show early insults lead to altered dopamine sensitivity and stress responses post-maturity.
• Early life stress and maternal deprivation in animals cause lasting changes in HPA axis reactivity.

Conclusions:

• Early pre- and post-natal events significantly contribute to the etiology of schizophrenia and affective disorders.
• Neurodevelopmental models provide insights into the biological mechanisms linking early insults to adult psychopathology.
• Further research on early life influences is crucial for understanding and treating common neuropsychiatric illnesses.