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Metabolism-clinical and Experimental
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Abstract Background Metabolic complications are highly prevalent in cancer survivors treated with irradiation but the underlying mechanisms remain unknown. Methods Chow or high fat-fed C57Bl/6 J mice were irradiated (6Gy) before investigating the impact on whole-body or skeletal muscle metabolism and profiling their lipidomic signature. Using a transgenic mouse model (Tg:Pax7-nGFP), we isolated muscle progenitor cells (satellite cells) and characterised their metabolic functions. We recruited ch...
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Abstract Objective Secreted frizzled-related protein 5 (Sfrp5) has been shown to be associated with energy homeostasis and insulin resistance in mouse models of obesity and diabetes. However, its central role in glucose and lipid metabolism is unknown. Methods HFD-fed rats received ICV infusions of vehicle or Sfrp5 during a pancreatic euglycemic clamp procedure. To delineate the pathway(s) by which ICV Sfrp5 modulates HGP and VLDL-TG secretion, we inhibited the hypothalamic KATP channel using gl...
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Abstract Background Oxidative stress may play an important role in the development of diabetic complications. The ratio of human nonmercaptalbumin (HNA; oxidized form) to human mercaptalbumin (HMA; reduced form) has attracted attention as an indicator for systemic redox states. In this study, we measured the ratio in elderly patients with diabetes and evaluated its association with diabetic complications and disability in activities of daily living (ADL disability). Methods One hundred twenty-si...
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Abstract Background Transforming growth factor (TGF)-β/Smad3 signaling is highly activated in kidneys of patients with type 2 diabetic nephropathy (T2DN), however, the precise role of Smad3 in the pathogenesis of diabetic nephropathy remains unclear. Methods Smad3 knockout (KO)-db/db mice were generated by intercrossing of male and female double-heterozygous Smad3+/− db/m mice. Renal functions including urinary albumin excretion and serum creatinine were determined. Renal histological injury inc...
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Abstract Background Exogenous carbohydrate oxidation is lower during steady-state aerobic exercise in native lowlanders sojourning at high altitude (HA) compared to sea level (SL). However, the underlying mechanism contributing to reduction in exogenous carbohydrate oxidation during steady-state aerobic exercise performed at HA has not been explored. Objective To determine if alterations in glucose rate of appearance (Ra), disappearance (Rd) and metabolic clearance rate (MCR) at HA provide a mec...
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Abstract Background Our previous work demonstrated that a short-term high fat diet (HFD) increased fasting serum endotoxin, and altered postprandial excursions of serum endotoxin, and led to metabolic and transcriptional responses in skeletal muscle in young, healthy male humans. Purpose The purpose of the present study was to determine if a short-term high fat diet: 1) increases intestinal permeability and, in turn, fasting endotoxin concentrations and 2) decreases postprandial skeletal muscle ...
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Abstract Objective Glucocorticoids (GCs) are highly effective anti-inflammatory and immunosuppressive drugs. However, prolonged GC therapy may cause numerous adverse effects leading to diabetes and obesity, as well as bone disorders such as osteoporosis in adults and growth retardation in children and adolescents. Prevention and care of the GC-induced adverse effects remain challenging. We have previously demonstrated the efficacy of a treatment with a non-peptidic agonist of adiponectin recepto...
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Abstract Objective Bile acids (BAs) are signaling molecules controlling lipid and glucose metabolism. Since BA alterations are associated with obesity and insulin resistance, plasma BAs have been considered candidates to predict type 2 diabetes (T2D) risk. We aimed to determine (1) the association of BAs with glucose homeostasis parameters and (2) their predictive association with the risk of conversion from prediabetes to new-onset diabetes (NOD) in a prospective cohort study. Design 205 patien...
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Abstract Objective Angiotensin-(1-7) [Ang-(1-7)], a component of the renin angiotensin system, is a vasodilator that exerts its effects primarily through the Mas receptor. The discovery of the Mas receptor in white adipose tissue (WAT) suggests an additional role for this peptide. The aim of the present study was to assess whether Ang-(1-7) can induce the expression of thermogenic genes in white adipose tissue and increase mitochondrial respiration in adipocytes. Materials/methods Stromal Vascul...
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Abstract Objective Glucose and lipid metabolism disorder is a major risk factor for type II diabetes and cardiovascular diseases. Evidence has indicated that the interplay between the liver and adipose tissue is crucial in maintaining energy homeostasis. Recently, the interaction between two distant endocrine organs mainly focuses on the regulation of hormones and receptors. However, as a novel carrier in the inter-tissue communication, exosome plays a role in liver-fat crosstalk, but its effect...
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Endocrinology
Insulin
Diabetes mellitus
Medicine
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