PMID- 26188381 OWN - NLM STAT- MEDLINE DCOM- 20151222 LR - 20201226 IS - 1090-2430 (Electronic) IS - 0014-4886 (Print) IS - 0014-4886 (Linking) VI - 271 DP - 2015 Sep TI - Progesterone protects endothelial cells after cerebrovascular occlusion by decreasing MCP-1- and CXCL1-mediated macrophage infiltration. PG - 401-8 LID - S0014-4886(15)30043-1 [pii] LID - 10.1016/j.expneurol.2015.07.010 [doi] AB - The neuroprotective effects of progesterone after ischemic stroke have been established, but the role of progesterone in promoting cerebrovascular repair remains under-explored. Male Sprague-Dawley rats underwent transient middle cerebral artery occlusion (tMCAO) for 90 min followed by reperfusion for 3 days. Progesterone (8 mg/kg/day) was administered intraperitoneally at 1h after initial occlusion followed by subcutaneous injections at 6, 24 and 48 h post-occlusion. Rats were euthanized after 72 h and brain endothelial cell density and macrophage infiltration were evaluated within the cerebral cortex. We also assessed progesterone's ability to induce macrophage migration toward hypoxic/reoxygenated cultured endothelial cells. We found that progesterone treatment post-tMCAO protects ischemic endothelial cells from macrophage infiltration. We further demonstrate that infiltration of monocytes/macrophages can be induced by potent chemotactic factors such as monocyte chemoattractant protein-1 (MCP-1) and the chemokine ligand 1 (CXCL1), secreted by hypoxic/reoxygenated endothelial cells. Progesterone blunts secretion of MCP-1 and CXCL1 from endothelial cells after hypoxia/reoxygenation injury and decreases leukocyte infiltration. The treatment protects ischemic endothelial cells from macrophage infiltration and thus preserves vascularization after ischemic injury. CI - Copyright (c) 2015 Elsevier Inc. All rights reserved. FAU - Remus, Ebony Washington AU - Remus EW AD - Department of Emergency Medicine Brain Research Laboratory, Emory University, Atlanta, GA, USA. FAU - Sayeed, Iqbal AU - Sayeed I AD - Department of Emergency Medicine Brain Research Laboratory, Emory University, Atlanta, GA, USA. FAU - Won, Soonmi AU - Won S AD - Department of Emergency Medicine Brain Research Laboratory, Emory University, Atlanta, GA, USA. FAU - Lyle, Alicia N AU - Lyle AN AD - Department of Cardiology, Emory University Atlanta, GA, USA. FAU - Stein, Donald G AU - Stein DG AD - Department of Emergency Medicine Brain Research Laboratory, Emory University, Atlanta, GA, USA. Electronic address: dstei04@emory.edu. LA - eng GR - U01 NS062676/NS/NINDS NIH HHS/United States GR - NIH UO1 NS062676/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20150717 PL - United States TA - Exp Neurol JT - Experimental neurology JID - 0370712 RN - 0 (Antigens, CD) RN - 0 (Antigens, Differentiation, Myelomonocytic) RN - 0 (CD68 antigen, human) RN - 0 (Ccl2 protein, rat) RN - 0 (Chemokine CCL2) RN - 0 (Chemokine CXCL1) RN - 0 (Cxcl1 protein, rat) RN - 0 (Cytokines) RN - 0 (Ki-67 Antigen) RN - 0 (Progestins) RN - 4G7DS2Q64Y (Progesterone) SB - IM MH - Animals MH - Antigens, CD/metabolism MH - Antigens, Differentiation, Myelomonocytic/metabolism MH - Cell Hypoxia/drug effects MH - Cell Movement/drug effects MH - Cells, Cultured MH - Chemokine CCL2/*metabolism MH - Chemokine CXCL1/*metabolism MH - Cytokines/metabolism MH - Disease Models, Animal MH - Endothelial Cells/*drug effects MH - Gene Expression Regulation/drug effects MH - *Infarction, Middle Cerebral Artery/drug therapy/metabolism/pathology MH - Ki-67 Antigen/metabolism MH - Macrophages/drug effects MH - Male MH - Progesterone/*therapeutic use MH - Progestins/*therapeutic use MH - Rats MH - Rats, Sprague-Dawley MH - Reperfusion PMC - PMC4586408 MID - NIHMS710752 OTO - NOTNLM OT - Brain ischemia OT - Cerebrovascular repair OT - Endothelial cells OT - Macrophage infiltration OT - Progesterone COIS- The authors have no conflicts of interest concerning this research. EDAT- 2015/07/21 06:00 MHDA- 2015/12/23 06:00 PMCR- 2016/09/01 CRDT- 2015/07/20 06:00 PHST- 2015/05/14 00:00 [received] PHST- 2015/06/29 00:00 [revised] PHST- 2015/07/13 00:00 [accepted] PHST- 2015/07/20 06:00 [entrez] PHST- 2015/07/21 06:00 [pubmed] PHST- 2015/12/23 06:00 [medline] PHST- 2016/09/01 00:00 [pmc-release] AID - S0014-4886(15)30043-1 [pii] AID - 10.1016/j.expneurol.2015.07.010 [doi] PST - ppublish SO - Exp Neurol. 2015 Sep;271:401-8. doi: 10.1016/j.expneurol.2015.07.010. Epub 2015 Jul 17.