Pathological stratification and therapeutic implications for post-stroke depression based on a multidimensional...

Area of Science:

• Neuroscience
• Psychiatry
• Biomarker Research

Background:

• Post-stroke depression (PSD) significantly hinders neurological recovery.
• Current serotonin-focused treatments for PSD are often insufficient.
• PSD involves dysregulation across multiple biological systems, not just monoamines.

Purpose of the Study:

• To review evidence on the complex biological underpinnings of PSD.
• To propose a phenotypic framework for PSD based on biomarkers.
• To explore therapeutic implications of this framework for mechanism-guided management.

Main Methods:

• Comprehensive literature review of studies on PSD.
• Analysis of evidence linking biological dimensions (monoamines, neuropeptides, inflammation) to PSD.
• Development of a provisional phenotypic framework for PSD.

Main Results:

• PSD is characterized by coupled dysregulation in monoamines, neuropeptides, neurotrophic factors, and immune-inflammatory mediators.
• A phenotypic framework includes "low-monoamine phenotype," "high inflammatory burden phenotype," and "neuropeptide-dominant phenotype."
• Multimodal biomarkers may aid in risk stratification and personalized PSD management.

Conclusions:

• PSD pathophysiology is multifactorial, involving interconnected biological pathways.
• The proposed phenotypic framework offers a novel approach to understanding and potentially treating PSD.
• Further research is needed to validate phenotype-treatment links and guide clinical practice.