PMID- 10969035 OWN - NLM STAT- MEDLINE DCOM- 20000927 LR - 20190706 IS - 1524-4571 (Electronic) IS - 0009-7330 (Linking) VI - 87 IP - 5 DP - 2000 Sep 1 TI - Contribution of monocytes/macrophages to compensatory neovascularization: the drilling of metalloelastase-positive tunnels in ischemic myocardium. PG - 378-84 AB - In a transgenic model of ischemic cardiomyopathy in which monocytes are attracted to the myocardium by the targeted overexpression of monocyte chemoattractant protein-1 (MCP-1), we have observed the presence of endothelial NO synthase and platelet endothelial cell adhesion molecule-1-negative tunnels, occasionally containing blood-derived cells, that probe the cardiac tissue. Immunohistochemical data show that monocytes/macrophages (MCs/Mphs) drill tunnels using the broad-spectrum mouse macrophage metalloelastase. 5-Bromo-2'-deoxyuridine incorporation and neo-endothelial markers present in the microvasculature of MCP-1 mouse hearts suggest an active angiogenic process. Further studies will be required to establish that the MC-/Mph-drilled tunnels evolve to become capillaries, connected to the existing vessels and colonized by circulating endothelial cell progenitors. This possibility is supported by the availability of these cells, which is demonstrated by cell tagging with beta-galactosidase placed under an active endothelial Tie-2 promoter. This phenomenon might represent another mechanism, in addition to the secretion of the angiogenic factors, by which MCs/MPhs may participate in the elaboration of new blood vessels in adult tissues. FAU - Moldovan, N I AU - Moldovan NI AD - Heart and Lung Institute and the Division of Cardiology, Department of Internal Medicine, College of Medicine and Public Health, Ohio State University, Columbus, Ohio 43210, USA. moldovan-1@medctr.osu.edu FAU - Goldschmidt-Clermont, P J AU - Goldschmidt-Clermont PJ FAU - Parker-Thornburg, J AU - Parker-Thornburg J FAU - Shapiro, S D AU - Shapiro SD FAU - Kolattukudy, P E AU - Kolattukudy PE LA - eng GR - GM53236/GM/NIGMS NIH HHS/United States GR - HL48916/HL/NHLBI NIH HHS/United States GR - HL52315/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Circ Res JT - Circulation research JID - 0047103 RN - 0 (Chemokine CCL2) RN - 0 (Thy-1 Antigens) RN - EC 1.14.13.39 (Nitric Oxide Synthase) RN - EC 1.14.13.39 (Nitric Oxide Synthase Type II) RN - EC 1.14.13.39 (Nitric Oxide Synthase Type III) RN - EC 1.14.13.39 (Nos3 protein, mouse) RN - EC 3.4.24.- (Metalloendopeptidases) SB - IM CIN - Circ Res. 2000 Sep 1;87(5):341-3. PMID: 10969028 MH - Animals MH - Capillaries/physiopathology MH - Chemokine CCL2/analysis/*biosynthesis MH - Heart/*physiopathology MH - Immunohistochemistry MH - Macrophages/enzymology/*physiology MH - Metalloendopeptidases/analysis MH - Mice MH - Mice, Transgenic MH - Monocytes/enzymology/*physiology MH - Myocardial Ischemia/blood/*metabolism/physiopathology MH - Myocardium/enzymology/pathology/ultrastructure MH - Neovascularization, Physiologic/*physiology MH - Nitric Oxide Synthase/analysis MH - Nitric Oxide Synthase Type II MH - Nitric Oxide Synthase Type III MH - Staining and Labeling MH - Thy-1 Antigens/analysis EDAT- 2000/09/02 00:00 MHDA- 2000/09/30 00:00 CRDT- 2000/09/02 00:00 PHST- 2000/09/02 00:00 [pubmed] PHST- 2000/09/30 00:00 [medline] PHST- 2000/09/02 00:00 [entrez] AID - 10.1161/01.res.87.5.378 [doi] PST - ppublish SO - Circ Res. 2000 Sep 1;87(5):378-84. doi: 10.1161/01.res.87.5.378.