Post-stroke recrudescence-a possible connection to autoimmunity?

Area of Science:

• Neuroscience
• Immunology
• Neurology

Background:

• Early recanalization improves outcomes in ischemic stroke, but interventions for chronic post-stroke conditions are limited.
• Upregulated immune responses to brain antigens are correlated with post-stroke recrudescence (PSR), post-stroke fatigue (PSF), and post-stroke dementia (PSD).
• Acute infections during stroke correlate with PSR onset, suggesting adaptive immune system involvement.

Purpose of the Study:

• To review the mechanisms and epidemiology of post-stroke recrudescence (PSR).
• To explore the role of adaptive immune responses and neuroinflammation in chronic post-stroke complications.
• To highlight the potential for improved pre-clinical models and clinical studies.

Main Methods:

• Review of current clinical and pre-clinical evidence on PSR, PSF, and PSD.
• Analysis of epidemiological data linking infection, autoimmunity, and stroke outcomes.
• Examination of proposed mechanisms involving neuroinflammation and autoimmune responses to brain antigens.

Main Results:

• PSR, PSF, and PSD are associated with poor long-term stroke outcomes.
• Evidence suggests an autoimmune response to self-brain antigens underlies PSR, particularly in susceptible populations.
• Neuroinflammation targeting brain antigens appears to contribute to PSR, PSF, and PSD.

Conclusions:

• Adaptive immune-mediated neuroinflammation targeting brain antigens is a significant factor in chronic post-stroke complications.
• Future research should focus on developing accurate pre-clinical models of adaptive immune-mediated neuroinflammation.
• Further clinical studies investigating PSR are crucial for improving long-term stroke patient outcomes.