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Isolation and Flow Cytometric Assessment of Neuroimmune Interactions in a Mini-Stroke Murine Model
Published on: June 20, 2025
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Autoimmune responses to brain following stroke
1School of Medicine, University of Washington, Box 359775 HMC, 325 9th Ave, Seattle, WA, 98104-2499, USA, kjb@u.washington.edu.
Translational Stroke Research
|December 11, 2013
Summary
Cellular immune responses to brain antigens occur after stroke. While T helper 1 (TH1) responses worsen outcomes, regulatory T cell (TREG) responses improve them, influenced by systemic inflammation.
Area of Science:
- Neuroimmunology
- Stroke Research
- Autoimmunity
Background:
- Cellular immune responses targeting brain antigens have been observed in both experimental and human ischemic stroke.
- These immune responses involve distinct T cell subsets with opposing effects on stroke outcomes.
Purpose of the Study:
- To review laboratory findings on cellular immune responses to brain antigens post-stroke.
- To elucidate the role of specific T cell responses (TH1 and TREG) in stroke outcome.
- To explore the impact of systemic inflammation and infection on the development of these autoimmune responses.
Main Methods:
- Synthesis of experimental data from animal models of stroke.
- Analysis of immune responses in patients following ischemic stroke.
- Investigation of the influence of systemic inflammatory stimuli and infections.
Main Results:
- Demonstration of antigen-specific T helper 1 (TH1) and regulatory T cell (TREG) responses directed at brain antigens.
- Association of TH1 responses with worse stroke outcomes and TREG responses with better outcomes.
- Increased likelihood of detrimental TH1 responses due to systemic inflammation or infection.
Conclusions:
- Systemic inflammation alters the microenvironment in lymph nodes and the brain following ischemic injury.
- This alteration facilitates bystander activation of lymphocytes, leading to autoimmune responses against brain antigens.
- Understanding these neuroinflammatory mechanisms is crucial for developing targeted stroke therapies.
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