High-fat diet and glucose and albumin circadian rhythms' chronodisruption in rats

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High-fat diet and glucose and albumin circadian rhythms' chronodisruption in rats

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Title: High-fat diet and glucose and albumin circadian rhythms' chronodisruption in rats
Author: Bravo Santos, Rafael; Chini Martín, Américo José; Ugartemendia Ugalde, Lierni; Franco Hernández, Lourdes; Mesa Rubio, Mónica; Rodríguez Moratinos, Ana Beatriz; Cubero Juanez, Javier; Barriga Ibars, Carmen
Abstract: La obesidad es una de las enfermedades nutricionales más extendidas en las sociedades desarrolladas y se considera un factor de riesgo de enfermedad cardiovascular. El objetivo del presente trabajo fue evaluar cómo una dieta alta en grasas puede influir en la cronobiología de los ritmos circadianos de glucosa y albúmina. Ochenta y cuatro ratas Wistar macho comunes se separaron en dos grupos: un grupo de control (n = 42) y un grupo alimentado con una dieta rica en grasas (n = 42); tanto para el grupo control como para el grupo inducido por la obesidad establecimos 7 subgrupos (6 ratas por subgrupo) para tomar muestras de sangre a las 0000, 0200, 0400, 1000, 1400, 1800 y 2200 horas. Los niveles plasmáticos de glucosa y albúmina se analizaron en muestras de sangre y sus ritmos circadianos se evaluaron mediante la prueba Cosinor. Nuestros resultados mostraron síntomas claros de cronodisrupción en las oscilaciones de glucosa y albúmina, aunque estos trastornos circadianos fueron más evidentes en los ritmos de glucosa.Obesity is one of the most widespread nutritional diseases in developed societies and it is considered a cardiovascular disease risk factor. The aim of the present work was to evaluate how a high-fat diet may influence the chronobiology of glucose and albumin circadian rhythms. Eighty-four male common Wistar rats were separated into two groups: a control group (n = 42) and a group fed a high-fat diet (n = 42); both for the control and the obesity-induced group we stablished 7 subgroups (6 rats per subgroup) to take blood samples at 0000, 0200, 0400, 1000, 1400, 1800, and 2200 hours. Glucose and albumin plasma levels were analyzed in blood samples and their circadian rhythms were evaluated through the cosinor method. Our results showed clear chronodisruption symptoms in both glucose and albumin oscillations, although these circadian disorders were more evident in glucose rhythms.
URI: http://hdl.handle.net/10662/9699
Date: 2017


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