Abstract

We analyzed expression of Endothelial Monocyte-Activating Polypeptide II (EMAP II), a proinflammatory, antiangiogenic cytokine in rat brains after stab wound injury and observed a highly significant ( p<0.0001) lesional accumulation confined to microglia/macrophages. Maximum numbers were seen at day 5 declining until 21 days after injury. Further, EMAP II + microglia/macrophages formed clusters in perivascular Virchow–Robin spaces. Prolonged accumulation of EMAP II +, ED1 + microglia/macrophages and increased lesional numbers of EMAP II + endothelial/smooth muscle cells during the acute postinjury period might indicate that EMAP II enrich the proinflammatory and antiangiogenic repertoire of effector molecules expressed by activated microglia/macrophages during secondary damage.

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