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Overview of Global Cerebral Ischemia Models

Global cerebral ischemia, caused by a critical reduction of cerebral blood flow throughout the brain, models global brain injury following cardiac arrest and resuscitation. We offer four-vessel (4-VO) and two-vessel (2-VO) occlusion models to support research on the molecular mechanisms of cardiac arrest-induced cerebral ischemia in rats.

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This brochure highlights the 4-VO and 2-VO models, enabling clients to study the molecular mechanisms of ischemic brain injury and evaluate new therapeutic approaches.

  • Model Characteristics

    The 4-VO model induces transient forebrain ischemia resembling cardiac arrest, leading to delayed neuronal death, astrocyte hypertrophy, and microglial activation. The 2-VO model produces gradual cerebral hypoperfusion, ideal for studying selective neuronal injury and white matter pathology such as demyelination and gliosis.

  • Modeling and Validation

    Detailed procedures outline vessel ligation and occlusion steps, ischemia durations, and recovery phases. Validation indicators include EEG flattening and reduced LDH activity, confirming successful ischemia and reperfusion outcomes.

  • Model Applications

    These models support research on the molecular mechanisms of cardiac arrest-induced brain injury, evaluation of neuroprotective therapies, and exploration of ischemia-related neuronal and glial responses.

Download the brochure to explore how our validated ischemia models can enhance the reliability and translational impact of your preclinical stroke studies.