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NLRP2 Immunoreactivity in Mouse Brain After Cortical Spreading Depolarization
Eda Derle1,2, Buket Dönmez Demir2, Melike Sever Bahçekapılı2
1Department of Neurology, Başkent University Faculty of Medicine, Ankara, Türkiye.
Noro Psikiyatri Arsivi
|September 15, 2025
Summary
Cortical spreading depolarization (CSD) significantly reduces NLRP2 expression in brain tissue. This study investigated NLRP2 alterations in neurons and astrocytes following CSD.
Area of Science:
- Neuroscience
- Molecular Biology
Background:
- NLRP2 is a component of the inflammasome.
- Its role in cortical spreading depolarization (CSD) is not well understood.
Purpose of the Study:
- To investigate the expression pattern of NLRP2.
- To determine alterations in NLRP2 following a single CSD event.
Main Methods:
- Brain tissue was collected 15 minutes after CSD induction in mice.
- Immunofluorescence staining was used to examine NLRP2 expression.
- Dual staining identified NLRP2-expressing cells (neurons and astrocytes).
Main Results:
- NLRP2 immunoreactivity was observed in cortical and subcortical regions of control and naive brains.
- A notable reduction in NLRP2 immunoreactivity was found in CSD-induced brains.
- Most NLRP2-expressing cells were neurons (NeuN+), with a smaller population in astrocytes (S100β+).
Conclusions:
- Single CSD leads to decreased NLRP2 immunoreactivity in the early stages.
- NLRP2 is expressed in both neurons and astrocytes in the brain.

