Summary
This thesis demonstrates that retinal function measured by electroretinography (ERG) reflects neurochemical disorders in psychiatric conditions such as SAD and schizophrenia, positioning ERG as a non-invasive biomarker tool. Key molecular drivers of ERG anomalies include melatonin dysregulation, central serotonergic/dopaminergic dysfunction, and GSK3 overexpression, with the latter also implicated in circadian clock disruption.
Key Findings
- Melatonin secretion imbalance was found to partially explain ERG anomalies observed in SAD patients.
- Central serotonergic and dopaminergic neurotransmission dysfunction (rather than altered D1R/D2R receptor bioavailability) is proposed as the more likely origin of ERG anomalies in SAD.
- GSK3 overexpression â a known risk factor for schizophrenia and bipolar disorder â produces the same ERG anomaly observed in children at high risk for these disorders.
- GSK3 was shown to play a primary role in biological clock regulation, linking it to circadian dysfunction in psychiatric disease.
Categories
Eye Health & Vision: Electroretinography (ERG) is explored as a biomarker for psychiatric disorders, with retinal function abnormalities linked to seasonal affective disorder and schizophrenia.
Seasonal Affective Disorder: ERG anomalies in SAD are linked to melatonin imbalance and dysfunctions in central serotonergic and dopaminergic neurotransmission.
Sleep & Circadian Health: GSK3 overexpression is shown to play a key role in biological clock regulation, connecting circadian mechanisms to psychiatric disease risk.
Author(s)
J Lavoie
Publication Year
2014
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Sleep & Circadian Health
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