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- W2027769941 abstract "The present study investigates whether retinal neovascularization (NV) and apoptosis are altered in MCP-1-deficient ((-/-)) mice in the OIR model.Postnatal day (P) 7 MCP-1(-/-) and C57BL/6 (B6) mice were exposed to 75% oxygen for 5 days and then recovered in room air. Immunostaining was performed to localize macrophages/microglia within retinal whole mounts and cross-sections. Retinopathy was qualitatively assessed in FITC-dextran-perfused retinas, and preretinal NV was quantified on P17, P21, and P24. TUNEL analysis was used to compare apoptosis between B6 and MCP-1(-/-) mice.MCP-1(-/-) and B6 mice revealed normal vascular development in room air controls and similar vaso-obliteration in oxygen-exposed mice on P12. MCP-1(-/-) mice exhibited significantly reduced vascular tuft-associated F4/80(+) cells compared with B6 mice. FITC-dextran-perfused retinas exhibited prominent neovascular tufts on P17, and quantification of preretinal nuclei revealed no significant differences between MCP-1(-/-) and B6 mice. In contrast, on P21 and P24, MCP-1(-/-) mice exhibited significant increases in preretinal neovascular nuclei compared with B6 controls. These increases in NV in the MCP-1(-/-) mice were associated with a significant reduction in vascular tuft apoptosis.The results demonstrate that the absence of MCP-1 does not alter normal retinal vascular development. Furthermore, MCP-1(-/-) mice exhibit a similar neovascular response on P17. However, the reduction in tuft-associated macrophages/microglia in the MCP-1(-/-) mice correlates with reduced vascular tuft apoptosis and delayed regression of retinal NV. These findings suggest that macrophages/microglia may contribute to tuft regression through their proapoptotic properties." @default.
- W2027769941 created "2016-06-24" @default.
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- W2027769941 date "2008-09-01" @default.
- W2027769941 modified "2023-10-04" @default.
- W2027769941 title "MCP-1 Deficiency Delays Regression of Pathologic Retinal Neovascularization in a Model of Ischemic Retinopathy" @default.
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- W2027769941 doi "https://doi.org/10.1167/iovs.07-1491" @default.
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