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Updated: Dec 29, 2025
12:14
Isolation and Flow Cytometric Analysis of Immune Cells from the Ischemic Mouse Brain
Published on: February 12, 2016
35.9K
Cerebrospinal fluid influx drives acute ischemic tissue swelling
Humberto Mestre1,2, Ting Du1,3, Amanda M Sweeney1
1Center for Translational Neuromedicine, Department of Neurosurgery, University of Rochester Medical Center, Rochester, NY 14642, USA.
Science (New York, N.Y.)
|February 1, 2020
Summary
Cerebrospinal fluid, not vascular ions, rapidly enters brain tissue after stroke via perivascular channels, initiating poststroke brain edema. This discovery challenges current understanding and may lead to new treatments for stroke damage.
Area of Science:
- Neuroscience
- Pathophysiology
- Medical Imaging
Background:
- Poststroke brain edema is a key predictor of stroke severity.
- Current understanding of edema development is incomplete, limiting treatment options.
- Existing theories propose vascular ion influx as the primary cause of early edema.
Purpose of the Study:
- To investigate the mechanisms of early poststroke brain edema.
- To challenge the prevailing theory of vascular ion influx.
- To identify novel pathways for therapeutic intervention in stroke.
Main Methods:
- Magnetic resonance imaging (MRI) in rodents.
- Radiolabeled tracer studies.
- Multiphoton imaging to visualize fluid dynamics.
Main Results:
- Cerebrospinal fluid (CSF) enters brain tissue within minutes of ischemic insult.
- Fluid transport occurs along perivascular flow channels.
- Ischemic spreading depolarizations enlarge perivascular spaces, increasing glymphatic inflow.
Conclusions:
- The prevailing concept of poststroke edema development requires revision.
- CSF influx via perivascular spaces is a critical early event in edema formation.
- Findings offer a new conceptual framework for developing stroke treatments.
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