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  • Title: Pentraxins and atherosclerosis: the role of PTX3.
    Author: Garlanda C, Bottazzi B, Moalli F, Deban L, Molla F, Latini R, Mantovani A.
    Journal: Curr Pharm Des; 2011; 17(1):38-46. PubMed ID: 21226667.
    Abstract:
    Pentraxins are a family of evolutionarily conserved multifunctional pattern-recognition proteins characterized by a cyclic multimeric structure. Based on the primary structure of the subunit, the pentraxins are divided into two groups: short pentraxins and long pentraxins. C-reactive protein (CRP) and serum amyloid P-component (SAP) are the two short pentraxins. The prototype protein of the long pentraxin group is pentraxin 3 (PTX3). CRP and SAP are produced primarily in the liver in response to IL-6, while PTX3 is produced by a variety of tissues and cells and in particular by innate immunity cells in response to proinflammatory signals and Toll-like receptor (TLR) engagement. PTX3 interacts with several ligands, including growth factors, extracellular matrix components and selected pathogens, playing a role in complement activation and facilitating pathogen recognition by phagocytes, acting as a predecessor of antibodies. In addition, PTX3 is essential in female fertility by acting as a nodal point for the assembly of the cumulus oophorus hyaluronan-rich extracellular matrix. Here we will concisely review the general properties of PTX3 in the context of the pentraxin superfamily and discuss recent data suggesting that PTX3 plays a cardiovascular protective effect. PTX3 may represent a new marker in vascular pathology which correlates with the risk of developing vascular events.
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