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2009•Developmental DynamicsRequires access

Platelet‐derived growth factor is involved in the differentiation of second heart field‐derived cardiac structures in chicken embryos

Noortje A.M. Bax, Heleen Lie‐Venema, Rebecca Vicente‐Steijn, Steven B. Bleyl, Nynke M. S. van den Akker, Saskia Maas, Robert E. Poelmann, Adriana C. Gittenberger–de Groot

Open publisher page 32 citations

Abstract

For the establishment of a fully functional septated heart, addition of myocardium from second heart field-derived structures is important. Platelet-derived growth factors (PDGFs) are known for their role in cardiovascular development. In this study, we aim to elucidate this role of PDGF-A, PDGF-C, and their receptor PDGFR-alpha. We analyzed the expression patterns of PDGF-A, -C, and their receptor PDGFR-alpha during avian heart development. A spatiotemporal pattern of ligands was seen with colocalization of the PDGFR-alpha. This was found in second heart field-derived myocardium as well as the proepicardial organ (PEO) and epicardium. Mechanical inhibition of epicardial outgrowth as well as chemical disturbance of PDGFR-alpha support a functional role of the ligands and the receptor in cardiac development.

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What this paper is about

For the establishment of a fully functional septated heart, addition of myocardium from second heart field-derived structures is important. Platelet-derived growth factors (PDGFs) are known for their role in cardiovascular development. In this study, we aim to elucidate this role of PDGF-A, PDGF-C, and their receptor PDGFR-alpha. We analyzed the expression patterns of PDGF-A, -C, and their receptor PDGFR-alpha during avian heart development. A spatiotemporal pattern of ligands was seen with colocalization of the PDGFR-alpha. This was found in second heart field-derived myocardium as well as the proepicardial organ (PEO) and epicardium. Mechanical inhibition of epicardial outgrowth as well as chemical disturbance of PDGFR-alpha support a functional role of the ligands and the receptor in cardiac development.

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Available abstract

For the establishment of a fully functional septated heart, addition of myocardium from second heart field-derived structures is important. Platelet-derived growth factors (PDGFs) are known for their role in cardiovascular development. In this study, we aim to elucidate this role of PDGF-A, PDGF-C, and their receptor PDGFR-alpha. We analyzed the expression patterns of PDGF-A, -C, and their receptor PDGFR-alpha during avian heart development. A spatiotemporal pattern of ligands was seen with colocalization of the PDGFR-alpha. This was found in second heart field-derived myocardium as well as the proepicardial organ (PEO) and epicardium. Mechanical inhibition of epicardial outgrowth as well as chemical disturbance of PDGFR-alpha support a functional role of the ligands and the receptor in cardiac development.

Key concepts: Colocalization, Platelet-derived growth factor receptor, Biology, Receptor, Platelet-derived growth factor, Growth factor, Heart development, Cell biology

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Platelet‐derived growth factor is involved in the differentiation of second heart field‐derived cardiac structures in chicken embryos — Research Paper | ScholarLens