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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Vascular endothelial growth factor-B-deficient mice display an atrial conduction defect.

BACKGROUND: Vascular endothelial growth factors (VEGFs) and their receptors are essential regulators of vasculogenesis and angiogenesis in both embryos and adults. One of the factors with a still unknown physiological function is VEGF-B, which is expressed in many tissues, including the heart. METHODS AND RESULTS: Mice carrying a targeted deletion in the VEGF-B gene were developed. In VEGF-B(-/-) animals, no gross abnormalities were observed in organs that normally show high expression of VEGF-B, such as the heart, muscle, and kidney. Analysis of heart function by ECG showed that adult VEGF-B(-/-) mice have an atrial conduction abnormality characterized by a prolonged PQ interval. VEGF- or basic fibroblast growth factor- induced corneal angiogenesis was similar in normal and VEGF-B(-/-) mice. CONCLUSIONS: VEGF-B seems to be required for normal heart function in adult animals but is not required for proper development of the cardiovascular system either during development or for angiogenesis in adults.[1]


  1. Vascular endothelial growth factor-B-deficient mice display an atrial conduction defect. Aase, K., von Euler, G., Li, X., Pontén, A., Thorén, P., Cao, R., Cao, Y., Olofsson, B., Gebre-Medhin, S., Pekny, M., Alitalo, K., Betsholtz, C., Eriksson, U. Circulation (2001) [Pubmed]
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