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. 2022 Jan 11;12:825572. doi: 10.3389/fimmu.2021.825572

Figure 1.

Figure 1

The dual role of polymorphonuclear neutrophils (PMNs) in ischemic stroke. PMNs exacerbate stroke injury in the acute phase by release of reactive oxygen species (ROS) and inflammatory cytokines. Intracerebral hemorrhages may result. Neutrophil extracellular traps (NET) contribute to capillary reperfusion disturbances. In the delayed phase, PMNs enhance cerebral angiogenesis, neurogenesis and neuroplasticity presumably by VEGF release, extracellular matrix (ECM) degradation and remodeling.