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Isolation and Flow Cytometric Analysis of Immune Cells from the Ischemic Mouse Brain
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Causal relations between immune cells and cerebral hemorrhage: a bidirectional Mendelian randomization study
Zhimin Wu1, Qiqi Wang1, Zuojun Xiong1
1Department of Neurosurgery, The Central hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
The International Journal of Neuroscience
|February 7, 2025
Summary
This study reveals a causal link between specific immune cells and intracerebral hemorrhage. Findings suggest immune cell changes may directly influence stroke development.
Area of Science:
- Neuroscience
- Immunology
- Genetics
Background:
- Previous research indicates a correlation between elevated immune cell counts and intracerebral hemorrhage (ICH).
- The precise causal link between immune cells and ICH remains unclear.
Purpose of the Study:
- To investigate the causal relationship between immune cells and intracerebral hemorrhage.
- Utilize a two-way Mendelian randomization (MR) approach.
Main Methods:
- Employed two sets of single nucleotide polymorphisms (SNPs) as instrumental variables.
- Conducted two-way MR analyses, including leave-one-out and MR-Egger tests.
- Performed meta-analysis to combine ICH datasets and assess heterogeneity.
Main Results:
- Identified a significant causal association between specific immune cells, including CD66b on Granulocytic Myeloid-Derived Suppressor Cells, and ICH.
- MR-Egger analysis indicated no significant genetic pleiotropy.
- Leave-one-out analysis confirmed the robustness of the MR results; no significant heterogeneity was detected.
Conclusions:
- Established a significant causal relationship between particular immune cell phenotypes and intracerebral hemorrhage.
- Mendelian randomization analysis provides strong evidence for immune cells influencing ICH.
