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Title: Angiogenesis-related factors derived from retinal glial (Müller) cells in hypoxia. Author: Eichler W, Yafai Y, Wiedemann P, Reichenbach A. Journal: Neuroreport; 2004 Jul 19; 15(10):1633-7. PubMed ID: 15232297. Abstract: Retinal glial (Müller) cells may play a major role in vascular eye diseases as they secrete vascular endothelial growth factor (VEGF), a hypoxia-induced angiogenic cytokine. They also release significant amounts of the anti-angiogenic factors, transforming growth factor (TGF)-beta2, pigment epithelium derived factor (PEDF), and thrombospondin-1 (TSP-1). Exposure of human (MIO-M1) and guinea-pig Müller cells to hypoxia resulted in a decreased release of TGF-beta2 and PEDF but in an elevated secretion of TSP-1. When retinal endothelial cells were exposed to VEGF/anti-angiogenic factor ratios mimicking those found in culture media of Müller cells under normoxia or hypoxia, their proliferation was significantly inhibited by TGF-beta2, PEDF or TSP-1. Thus Müller cells may provide a permanent anti-proliferative condition for retinal endothelial cells.[Abstract] [Full Text] [Related] [New Search]