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Título:	The addition of liguid fructose to a Western-type diet in LDL-R-/- mice induces liver inflammation and fibrogenesis markers without disrupting insulin receptor signalling after an insulin challenge
Autor/a:	Sangüesa Puigventós, Gemma; Baena Muñoz, Miguel; Hutter, Natalia; Montañés, José Carlos; Sánchez, Rosa María; Roglans i Ribas, Núria; Laguna Egea, Juan Carlos; Alegret i Jordà, Marta
Otros autores:	Universitat de Barcelona
Abstract:	A high consumption of fat and simple sugars, especially fructose, has been related to the development of insulin resistance, but the mechanisms involved in the effects of these nutrients are not fully understood. This study investigates the effects of a Western-type diet and liquid fructose supplementation, alone and combined, on insulin signalling and inflammation in low-density lipoprotein (LDL) receptor-deficient mice (LDL-R−/−). LDL-R−/− mice were fed chow or Western diet ±15% fructose solution for 12 weeks. Plasma glucose and insulin, and the expression of genes related to inflammation in the liver and visceral white adipose tissue (vWAT), were analysed. V-akt murine thymoma viral oncogene homolog-2 (Akt) activation was measured in the liver of the mice after a single injection of saline or insulin. None of the dietary interventions caused inflammation in vWAT, whereas the Western diet induced hepatic inflammation, which was further enhanced by liquid fructose, leading also to a significant increase in fibrogenesis markers. However, there was no change in plasma glucose or insulin, or insulin-induced Akt phosphorylation. In conclusion, hepatic inflammation and fibrogenesis markers induced by a Western diet supplemented with liquid fructose in LDL-R−/− mice are not associated with a significant impairment of hepatic insulin signalling.
Materia(s):	-Metabolisme -Teixit adipós -Sucre en l'organisme -Metabolism -Adipose tissues -Sugar in the body
Derechos:	cc-by (c) Sangüesa, Gemma et al., 2017 http://creativecommons.org/licenses/by/3.0/es
Tipo de documento:	Artículo Artículo - Versión publicada
Editor:	MDPI
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