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Updated: Mar 17, 2026

Optimized Management of Endovascular Treatment for Acute Ischemic Stroke
Published on: January 18, 2018
Natalizumab: a new therapy for acute ischemic stroke?
Alba Simats1, Teresa García-Berrocoso1, Joan Montaner1,2
1a Neurovascular Research Laboratory, Institut de Recerca, Hospital Universitari Vall d'Hebron (VHIR) , Universitat Autónoma de Barcelona , Barcelona , Spain.
Natalizumab, an anti-CD49d antibody, shows promise for ischemic stroke by reducing neuroinflammation. Further clinical trials are needed to confirm its neuroprotective role and functional benefits in stroke patients.
Area of Science:
- Neuroscience
- Immunology
- Neurology
Background:
- Natalizumab is a humanized antibody targeting alpha-4 integrin (CD49d), known for treating multiple sclerosis by limiting leukocyte migration.
- Experimental studies on anti-CD49d antibody efficacy in ischemic stroke have yielded conflicting results, raising questions about its therapeutic potential.
Purpose of the Study:
- To review experimental studies on CD49d blockage for ischemic stroke and identify reasons for inconsistent outcomes.
- To discuss preliminary results from the ACTION phase II clinical trial evaluating natalizumab in stroke patients.
- To provide an overview of neuroinflammation mitigation as a neuroprotective strategy post-stroke.
Main Methods:
- Literature review of experimental studies on CD49d blockage in ischemic stroke.
- Analysis of potential causes for discrepancies in experimental study results.
- Discussion of preliminary data from the ACTION clinical trial (Phase II) for natalizumab in stroke.
Main Results:
- Experimental studies on CD49d blockage for ischemic stroke show divergent results.
- Preliminary results from the ACTION trial suggest natalizumab may have positive effects on functional outcomes in stroke patients.
- The mechanism by which natalizumab improves functional outcomes without reducing infarct volume requires further investigation.
Conclusions:
- Despite inconclusive experimental data, natalizumab shows potential for improving functional outcomes in ischemic stroke.
- Further research and clinical trials are necessary to confirm the neuroprotective role of natalizumab in ischemic stroke.
- Mitigating post-stroke neuroinflammation is an emerging and important neuroprotective strategy.
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