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Related Experiment Video

Updated: Oct 21, 2025

A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia
06:01

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Embolic Stroke Model with Magnetic Nanoparticles.

Haoyuan Li1, Zhipeng Yang2, Qisheng Tang1

  • 1Department of Neurosurgery, Huashan Hospital of Fudan University, 12 Wulumuqi Zhong Road, Shanghai 200040, China.

ACS Applied Materials & Interfaces
|September 8, 2021
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel stroke model using magnetic nanoparticles (MNPs) and thrombin for embolic stroke research. This minimally invasive method effectively induces stroke and shows promising responses to thrombolytic drugs.

Keywords:
embolizemagnetic nanoparticlesstrokethrombinthrombolysis

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Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Pharmacology

Background:

  • Classic stroke models like suture occlusion have limitations, particularly for thrombolysis research.
  • Existing embolic stroke models often involve complex surgical procedures.
  • There is a need for simpler, more effective stroke models for pharmacological and rehabilitative studies.

Purpose of the Study:

  • To develop a novel, minimally invasive stroke model in mice.
  • To create an embolic stroke model suitable for thrombolysis research.
  • To establish a reliable method for inducing cerebral artery occlusion.

Main Methods:

  • Magnetic nanoparticles (MNPs) were cross-linked with thrombin to create MNP@Thrombin.
  • A magnet was placed on the common carotid artery, and MNP@Thrombin was injected intravenously.
  • Embolization and subsequent cerebral artery blockage were induced by MNP@Thrombin accumulation and clot formation.

Main Results:

  • The MNP@Thrombin method successfully induced thrombus formation and blocked cerebral blood flow.
  • The novel stroke model demonstrated significant responsiveness to thrombolytic drugs, such as urokinase.
  • Cerebral blood flow was restored, and neurological symptom scores improved after thrombolytic treatment.

Conclusions:

  • This new method provides a quick, easy, and minimally invasive stroke model in mice.
  • The model effectively blocks hemisphere blood flow, damages neural function, and is suitable for pharmacological and rehabilitative research.
  • The MNP@Thrombin approach offers a valuable tool for advancing stroke research, particularly in thrombolysis.