Abstract TP262: Evaluation of Novel Structural Features in Neovascularization of the Ischemic Brain

Introduction: Evaluation of angiogenesis and neovascularization in stroke has been limited to measurements of vascular density and identification of newly formed vessels. However, structural aspects of the configuration of those new vessels have not been studied. We investigated structural features of micro neovascularization in an animal model of cerebral ischemia. Methods: We used a mice model of ischemia and synangiosis. In essence, C57/BL6J mice underwent MCA ligation via a temporal craniotomy, the temporalis muscle was apposed to the ischemic brain and animals were sacrificed after 4 weeks. CD31-stained vasculature was evaluated by confocal microscopy. Images were analyzed using Fiji’s Skeleton and Direction tools. Vessel directionality was assessed as the proportion of vessels running along the predominant vector direction. Branching pattern was quantified as the junction points per vessel. Results: Vascular density was increased on the experimental side (CD31+: 7.17% vs. 5.13%, p < 0.01), consisten...