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                  <mods:namePart>Delgado Saavedra, María Jesús</mods:namePart>
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               <mods:abstract>El factor de crecimiento insulínico de tipo 1 (IGF-1) es una hormona implicada en múltiples procesos fisiológicos, cuya actividad está regulada por su unión a receptores específicos (IGF-1Rs) y a proteínas de unión (IGFBPs), constituyendo el denominado sistema del IGF-1. Este sistema debe sincronizarse temporalmente para asegurar su anticipación a los cambios cíclicos del ambiente, lo que es posible gracias al funcionamiento del sistema circadiano. La organización funcional del sistema circadiano en los vertebrados consiste en una red de osciladores cuya maquinaria molecular se basa en bucles de retroalimentación de los genes reloj y sus productos proteicos. El objetivo general de la presente Tesis Doctoral es el análisis de las variaciones diarias del sistema del IGF-1 en osciladores del carpín y su dependencia de sincronizadores ambientales; así como el estudio del papel del IGF-1 en la comunicación funcional entre osciladores circadianos...Insulin-like growth factor 1 (IGF-1) is a hormone that participates in several physiological processes. Its actions are regulated by its binding to both specific receptors (IGF-1Rs) and binding proteins (IGFBPs) that together with the IGF-1 constitutes the IGF-1 signaling system. This system should be synchronized to anticipate cyclic environmental changes, in a functional dependence of the circadian system. The functional organization of the circadian system in vertebrates consists on networks of oscillators based on feedbacks loops of the clock genes and their proteins.The overall objective of this PhD Thesis is to analyze the possible daily variations of the IGF-1 system in oscillators of goldfish, and their dependence on environmental synchronizers. In addition, the role of the IGF-1 in the functional communication among circadian oscillators is investigated...</mods:abstract>
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                  <mods:title>El sistema del IGF-1 en el carpín : ritmicidad, regulación por factores ambientales y efecto sincronizador en el sistema circadiano</mods:title>
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