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By Xx Liu
Keisuke Okabe, Sakiko Kobayashi, Toru Yamada, Toshihide Kurihara, Ikue Tai-Nagara, Takeshi Miyamoto, Yoh-suke Mukouyama, Thomas N Sato, Toshio Suda, Masatsugu Ema, Yoshiaki Kubota
Vascular and nervous systems, two major networks in mammalian bodies, show a high degree of anatomical parallelism and functional crosstalk. During development, neurons guide and attract blood vessels, and consequently this parallelism is established. Here, we identified a noncanonical neurovascular interaction in eye development and disease. VEGFR2, a critical endothelial receptor for VEGF, was more abundantly expressed in retinal neurons than in endothelial cells, including endothelial tip cells. Genetic deletion of VEGFR2 in neurons caused misdirected angiogenesis toward neurons, resulting in abnormally increased vascular density around neurons...
October 23, 2014: Cell
Przemyslaw Sapieha, Jean-Sebastien Joyal, José Carlos Rivera, Elsa Kermorvant-Duchemin, Florian Sennlaub, Pierre Hardy, Pierre Lachapelle, Sylvain Chemtob
Retinopathy of prematurity (ROP) is a major complication of preterm birth. It encompasses a spectrum of pathologies that affect vision, from mild disease that resolves spontaneously to severe disease that causes retinal detachment and subsequent blindness. The pathologies are characterized by an arrest in normal retinal vascular development associated with microvascular degeneration. The resulting ischemia and retinal hypoxia lead to excessive abnormal compensatory blood vessel growth. However, this neovascularization can lead to fibrous scar formation and culminate in retinal detachment...
September 2010: Journal of Clinical Investigation
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