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Sökning: WFRF:(Stratman Amber N.)

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1.
  • Krispin, Shlomo, et al. (författare)
  • Growth Differentiation Factor 6 Promotes Vascular Stability by Restraining Vascular Endothelial Growth Factor Signaling
  • 2018
  • Ingår i: Arteriosclerosis, Thrombosis and Vascular Biology. - : LIPPINCOTT WILLIAMS & WILKINS. - 1079-5642 .- 1524-4636. ; 38:2, s. 353-362
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective - The assembly of a functional vascular system requires a coordinated and dynamic transition from activation to maturation. High vascular endothelial growth factor activity promotes activation, including junction destabilization and cell motility. Maturation involves junctional stabilization and formation of a functional endothelial barrier. The identity and mechanism of action of prostabilization signals are still mostly unknown. Bone morphogenetic protein receptors and their ligands have important functions during embryonic vessel assembly and maturation. Previous work has suggested a role for growth differentiation factor 6 (GDF6; bone morphogenetic protein 13) in vascular integrity although GDF6's mechanism of action was not clear. Therefore, we sought to further explore the requirement for GDF6 in vascular stabilization.Approach and Results - We investigated the role of GDF6 in promoting endothelial vascular integrity in vivo in zebrafish and in cultured human umbilical vein endothelial cells in vitro. We report that GDF6 promotes vascular integrity by counteracting vascular endothelial growth factor activity. GDF6-deficient endothelium has increased vascular endothelial growth factor signaling, increased vascular endothelial-cadherin Y658 phosphorylation, vascular endothelial-cadherin delocalization from cell-cell interfaces, and weakened endothelial cell adherence junctions that become prone to vascular leak.Conclusions - Our results suggest that GDF6 promotes vascular stabilization by restraining vascular endothelial growth factor signaling. Understanding how GDF6 affects vascular integrity may help to provide insights into hemorrhage and associated vascular pathologies in humans.
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2.
  • Nowak-Sliwinska, Patrycja, et al. (författare)
  • Consensus guidelines for the use and interpretation of angiogenesis assays
  • 2018
  • Ingår i: Angiogenesis. - : Springer. - 0969-6970 .- 1573-7209. ; 21:3, s. 425-532
  • Forskningsöversikt (refereegranskat)abstract
    • The formation of new blood vessels, or angiogenesis, is a complex process that plays important roles in growth and development, tissue and organ regeneration, as well as numerous pathological conditions. Angiogenesis undergoes multiple discrete steps that can be individually evaluated and quantified by a large number of bioassays. These independent assessments hold advantages but also have limitations. This article describes in vivo, ex vivo, and in vitro bioassays that are available for the evaluation of angiogenesis and highlights critical aspects that are relevant for their execution and proper interpretation. As such, this collaborative work is the first edition of consensus guidelines on angiogenesis bioassays to serve for current and future reference.
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