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Ischemic Stroke ll: Pathophysiology

Ischemic Stroke ll: Pathophysiology

An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...

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AAV Systems and Mouse Models for Investigating Ectopic Expression of Neurod1 in Transduced Cells at Subacute and Chronic Times Post-Ischemic Stroke

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NMDA Receptor-Targeted Neuroprotection in Ischemic Stroke: The 3S Framework Integrating Spatiotemporal Dynamics,

Lan Ma¹, Yan-Nan Xu², Xiao-Kun Mi³

¹Hebei Key Laboratory of Critical Disease Mechanism and Intervention, Department of Pathophysiology, Neuroscience Research Center; The Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, 361 Zhongshan East Road, Shijiazhuang 050017, China.

Current Neuropharmacology

|June 24, 2026

Summary

A new framework explains why blocking all NMDA receptors (NMDARs) fails in stroke treatment, but targeting specific subtypes shows promise. This approach guides the development of precision neuroprotective strategies for ischemic stroke.

Keywords:

3S framework GluN2A GluN2B GluN2C GluN2D NMDA receptor ischemic conditioning ischemic stroke nerinetide receptor subtype selectivity remote ischemic postconditioning sexual dimorphism

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A High-throughput Calcium-flux Assay to Study NMDA-receptors with Sensitivity to Glycine/D-serine and Glutamate

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Published on: July 10, 2018

Area of Science:

Neuroscience
Pharmacology
Stroke Research

Background:

Ischemic stroke has limited therapeutic options beyond thrombolysis.
Complete NMDA receptor (NMDAR) blockade has failed clinically, creating a paradox in stroke neuropharmacology.

Purpose of the Study:

To propose a "Spatiotemporal-Subtype-Signaling (3S)" framework to resolve the paradox of NMDAR blockade in ischemic stroke.
To integrate spatiotemporal dynamics, NMDAR subtype selectivity, and signaling pathway selectivity.

Main Methods:

Analyzing NMDAR expression, phosphorylation, and localization shifts during stroke.
Differentiating effects of NMDAR subtypes (GluN2A, GluN2B, GluN2C/D) on neuronal fate.
Investigating NMDAR crosstalk with ferroptosis and sexual dimorphism in signaling pathways.

Main Results:

GluN2A promotes survival via PI3K-Akt-FOXO/GSK3β and ERK-CREB-BDNF pathways.
GluN2B mediates excitotoxicity via p38 MAPK, JNK, and PSD-95-nNOS.
Distinct sex-specific signaling pathways (estrogen receptor α, GPR30 in females).

Conclusions:

The 3S framework clarifies why complete NMDAR blockade fails and precision interventions may succeed.
Identifies priorities for sex-specific, subtype-targeted neuroprotective strategies in ischemic stroke.
Highlights translational potential of subtype-selective antagonists and protein-protein interaction disruptors.