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GLP-1 AND preadipocyte

Maren R Laughlin
Although there are many well-documented metabolic effects linked to the fructose component of a very high sugar diet, a healthy diet is also likely to contain appreciable fructose, even if confined to that found in fruits and vegetables. These normal levels of fructose are metabolized in specialized pathways that synergize with glucose at several metabolic steps. Glucose potentiates fructose absorption from the gut, while fructose catalyzes glucose uptake and storage in the liver. Fructose accelerates carbohydrate oxidation after a meal...
August 2014: Nutrients
Junpeng Yang, Jianmin Ren, Jun Song, Fuqiang Liu, Chuanlong Wu, Xuping Wang, Lei Gong, Wenjuan Li, Fang Xiao, Fei Yan, Xinguo Hou, Li Chen
Glucagon-like peptide 1 (GLP-1), a gut-derived peptide, has been reported to have profound effects on metabolism and to reduce insulin resistance. Adipocyte hyperplasia stimulated by preadipocyte differentiation has a positive effect on adipose tissue insulin sensitivity. However, it remains less clear whether GLP-1 plays a role in adipogenesis. In this study, we examined the effect of GLP-1 on preadipocyte differentiation and investigated the mechanisms that may be involved in this effect. In our 3T3-L1 cell study, we tested the levels of adipocyte-specific markers and signaling pathways during preadipocyte differentiation...
June 2013: International Journal of Molecular Medicine
J H Nielsen, E D Galsgaard, A Møldrup, B N Friedrichsen, N Billestrup, J A Hansen, Y C Lee, C Carlsson
Substantial new information has accumulated on molecular mechanisms of pancreas development, regulation of beta-cell gene expression, and the role of growth factors in the differentiation, growth, and regeneration of beta-cells. The present review focuses on some recent studies on the mechanism of action of cytokines such as growth hormone (GH) and prolactin (PRL) in beta-cell proliferation and gene expression-in particular, the role of signal transducers and activators of transcription (STAT) proteins. The implication of the discovery of suppressors of cytokine signaling (SOCS) proteins for the interaction between stimulatory and inhibitory cytokines, including GH, PRL, leptin, and the proinflammatory cytokines interleukin-1 and interferon-gamma, in beta-cell survival is not yet clear...
February 2001: Diabetes
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