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Título: | Exogenous fatty acids and niacin on acute prostaglandin D2 production in human myeloid cells |
Autor: | Montserrat-de la Paz, Sergio CSIC ORCID; Bermúdez, Beatriz CSIC ORCID; López Martín, Sergio ; Naranjo, María C.; Romero, Yolanda; Bando Hidalgo, María J.; Abia, Rocío CSIC ORCID ; Muriana, Francisco J. G. CSIC ORCID | Palabras clave: | Niacin Exogenous fatty acids Postprandial state Prostaglandin D2 Myeloid cells |
Fecha de publicación: | ene-2017 | Editor: | Elsevier | Citación: | Journal of Nutritional Biochemistry 39: 22–31 (2017) | Resumen: | Niacin activates HCA2 receptor that results in the release of PGD2. However, little is known on PGD2-producing cells and the role of fatty acids. Notably M-CSF macrophages exhibited a timely dependent PGD2 production upon niacin challenge. Short pretreatment of M-CSF macrophages with autologous postprandial TRLs induced the down-regulation of HCA2 gene and up-regulation of genes encoding COX1 and COX2 enzymes in a fatty acid-dependent manner. These effects were paralleled by a higher PGD2 production with postprandial TRL-SFAs. The niacin-mediated transcriptional activity of all genes involved in PGD2 biosynthesis was desensitized in a time-dependent manner by postprandial TRLs, leading to a decreased PGD2 release. In vivo, the net excursions of PGD2 in plasma followed similar fatty acid-dependent patterns as those found for PGD2 release in vitro. The predominant fatty acid class in the diet acutely modulates PGD2 biosynthetic pathway both in vitro and in vivo. | Descripción: | 42 Páginas; 3 Tablas; 6 Figuras | Versión del editor: | http://dx.doi.org/10.1016/j.jnutbio.2016.09.007 | URI: | http://hdl.handle.net/10261/140820 | DOI: | 10.1016/j.jnutbio.2016.09.007 | ISSN: | 0955-2863 | E-ISSN: | 1873-4847 |
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