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GLP-1 AND preadipocyte

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https://www.readbyqxmd.com/read/28822994/glucagon-like-peptide-1-receptor-agonist-stimulates-mitochondrial-bioenergetics-in-human-adipocytes
#1
Joanna Góralska, Agnieszka Śliwa, Anna Gruca, Urszula Raźny, Monika Chojnacka, Anna Polus, Bogdan Solnica, Małgorzata Malczewska-Malec
Glucagon-like peptide 1 receptor agonists (GLP-1RAs) are relatively new pharmacological agents used to normalize glucose level in type 2 diabetes. Recently, GLP-1RAs have been approved for the treatment of obesity to reduce body weight in non-diabetic patients. The extra-pancre-atic effects of GLP-1RAs, as well as their molecular mechanism of action, are still poorly understood. Thus this study was aimed to verify the hypothesis that the mechanism of action of the GLP-1RAs involves mitochondria and that GLP-1RAs administration can improve mitochondrial functions...
August 19, 2017: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/28734203/exenatide-mitigated-diet-induced-vascular-aging-and-atherosclerotic-plaque-growth-in-apoe-deficient-mice-under-chronic-stress
#2
Guang Yang, Yanna Lei, Aiko Inoue, Limei Piao, Lina Hu, Haiying Jiang, Takeshi Sasaki, Hongxian Wu, Wenhu Xu, Chenglin Yu, Guangxian Zhao, Shinyu Ogasawara, Kenji Okumura, Masafumi Kuzuya, Xian-Wu Cheng
BACKGROUND AND AIMS: Exposure to psychosocial stress is a risk factor for cardiovascular disorders. Because the glucagon-like peptide-1 (GLP-1) receptor (GLP-1R) agonist prevents cardiovascular injury, we investigated the beneficial effects and mechanism of the GLP-1 analogue exenatide on stress-related vascular senescence and atherosclerosis in apolipoprotein E-deficient (ApoE(-/-)) mice fed a high-fat (HF) diet. METHODS: ApoE(-/-) mice fed the HF diet were assigned to non-stressed and immobilized-stress groups for 12 weeks...
July 13, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28668964/glp-1-glp-1r-signaling-in-regulation-of-adipocyte-differentiation-and-lipogenesis
#3
Jicui Chen, Huichen Zhao, Xiaoli Ma, Yuchao Zhang, Sumei Lu, Yangang Wang, Chen Zong, Dandan Qin, Yuanmei Wang, Yingfeng Yingfeng Yang, Xiangdong Wang, Yuantao Liu
BACKGROUND/AIMS: The aim of this study was to determine the direct role of liraglutide (LG) in adipogenesis and lipid metabolism. METHODS: Lipid accumulation was evaluated by oil red O staining, quantitative real-time PCR (qPCR) was performed to determine glucagon-like peptide 1 receptor (GLP-1R), fatty acid synthase (FASN) and adipose triglyceride lipase (ATGL) expression in 3T3-L1 preadipocytes, differentiated adipocytes and in adipose tissues from mice. The effects of LG on 3T3-L1 adipogenesis and lipid metabolism were analyzed with qPCR, Western Blotting, oil red O staining, immunohistochemistry (IHC) and immunofluorescence (IF)...
June 30, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/25100436/normal-roles-for-dietary-fructose-in-carbohydrate-metabolism
#4
REVIEW
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
https://www.readbyqxmd.com/read/23588664/glucagon-like-peptide-1-regulates-adipogenesis-in-3t3-l1-preadipocytes
#5
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
https://www.readbyqxmd.com/read/11272193/regulation-of-beta-cell-mass-by-hormones-and-growth-factors
#6
REVIEW
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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