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Division of Bone and Mineral Diseases, Washington University in St Louis, St Louis, Missouri, USA
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) The number and function of bone-forming osteoblast is reduced. In addition, vitamin D serum levels are decreased, which alters calcium and phosphate homeostasis. (2) Osteoblasts derive from MSC that favor differentiating into fat-storing adipocytes in
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tissue fibrosis ( 7 , 8 ). Adipocytes are surrounded by a network of extracellular matrix (ECM) mainly composed of collagens and fibronectin. Adipose fibrosis is defined as an excessive accumulation of ECM components ( 9 ). It has been demonstrated
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adiposity relative to the HFHSD controls ( Fig. 2C ). Histologic analysis of perigonadal/epididymal adipose tissue identified a significant increase in the number of adipocytes per high-power field (hpf) in the TF-treated group ( Fig. 2D ). Despite this
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Jan van Goyen Medical Center, Department of Internal Medicine, Amsterdam, the Netherlands
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Department of Epidemiology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
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nervous system (SNS), which increases release of neurotransmitters such as norepinephrine, stimulates bone resorption through an enhanced RANKL secretion by osteoblasts (OBs). In the bone marrow adipose tissue (BMAT), adipocytes undergo lipolysis to
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sensitivity, but also hypertrophy of adipocytes and an overall increase in body fat mass ( 15 ). In south Asian men, both increased serum sclerostin levels and decreased expression of insulin signalling genes in white adipose tissue were found ( 28 ). Also
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adipocyte ( 23 )) and a significant reduction in F4/80 mRNA levels ( Fig. 5A and B ). HFD feeding increased the expression of proinflammatory cytokines TNFα, IL-1β, IL-6 and MCP-1, which was largely prevented by exercise training ( Fig. 5B ). Figure 5
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glucose metabolism by inhibiting gluconeogenesis in the liver and maintaining systemic lipid and insulin-dependent muscle glucose uptake. It has been reported that arthritic rats have reduced adipocyte size and downregulated membrane glucose transporter
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major contributor to inflammatory cytokine release in these states ( 23 ). As with other adipokines ( 24 , 25 ), adipocytes can produce IL-18 ( 26 , 27 ), but they do not seem to be the main source of the interleukin – rather it is being predominantly
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.5 kg/m 2 ), lower body weight and fat mass in HIV-infected and uninfected IDUs (13, 14) , indicate that anthropometric measures are valuable in estimating adiposity in IDUs. In addition, the link between lipodystrophy and adipocyte dysfunction (15
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-body metabolism. Adipocytes release multiple anti-inflammatory and pro-inflammatory cytokines. A low degree of inflammation is a link between IR and obesity. Studies showed that elevated proinflammatory cytokines TNF-α and IL-6 impaired insulin receptor substrate