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Glucose Metabolism

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https://www.readbyqxmd.com/read/27926952/growth-hormone-treatment-increases-plasma-irisin-concentration-in-patients-with-turner-syndrome
#1
B Wikiera, K Zawadzka, Ł Łaczmański, N Słoka, M Bolanowski, A Basiak, A Noczyńska, J Daroszewski
Irisin (Ir) deficiency may be a contributing factor in metabolic disease. This study aimed to investigate the effect of supraphysiological doses of recombinant human growth hormone (rhGH) on Ir plasma concentration in relation to metabolic disorders, including obesity and other components of metabolic syndrome. We studied 36 girls with Turner syndrome (mean age 8.2 years) treated with rhGH (0.05 mg/kg/day). Anthropometric data and fasting blood levels [e. g., Ir, insulin, glucose, glycated hemoglobin (HbA1c), IGF-1, IGFBP-3, cholesterol, insulin resistance (HOMA-IR), and β-cell function (HOMA-β)] were analyzed prior to and following rhGH therapy [mean (SD) follow-up of 1...
December 7, 2016: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27926891/type-2-diabetes-the-pathologic-basis-of-reversible-%C3%AE-cell-dysfunction
#2
REVIEW
Michael G White, James A M Shaw, Roy Taylor
The reversible nature of early type 2 diabetes has been demonstrated in in vivo human studies. Recent in vivo and in vitro studies of β-cell biology have established that the β-cell loses differentiated characteristics, including glucose-mediated insulin secretion, under metabolic stress. Critically, the β-cell dedifferentiation produced by long-term excess nutrient supply is reversible. Weight loss in humans permits restoration of first-phase insulin secretion associated with the return to normal of the elevated intrapancreatic triglyceride content...
November 2016: Diabetes Care
https://www.readbyqxmd.com/read/27926861/immunometabolic-pathways-in-bcg-induced-trained-immunity
#3
Rob J W Arts, Agostinho Carvalho, Claudia La Rocca, Carla Palma, Fernando Rodrigues, Ricardo Silvestre, Johanneke Kleinnijenhuis, Ekta Lachmandas, Luís G Gonçalves, Ana Belinha, Cristina Cunha, Marije Oosting, Leo A B Joosten, Giuseppe Matarese, Reinout van Crevel, Mihai G Netea
The protective effects of the tuberculosis vaccine Bacillus Calmette-Guerin (BCG) on unrelated infections are thought to be mediated by long-term metabolic changes and chromatin remodeling through histone modifications in innate immune cells such as monocytes, a process termed trained immunity. Here, we show that BCG induction of trained immunity in monocytes is accompanied by a strong increase in glycolysis and, to a lesser extent, glutamine metabolism, both in an in-vitro model and after vaccination of mice and humans...
December 6, 2016: Cell Reports
https://www.readbyqxmd.com/read/27926856/insulin-dependent-activation-of-mch-neurons-impairs-locomotor-activity-and-insulin-sensitivity-in-obesity
#4
A Christine Hausen, Johan Ruud, Hong Jiang, Simon Hess, Hristo Varbanov, Peter Kloppenburg, Jens C Brüning
Melanin-concentrating-hormone (MCH)-expressing neurons (MCH neurons) in the lateral hypothalamus (LH) are critical regulators of energy and glucose homeostasis. Here, we demonstrate that insulin increases the excitability of these neurons in control mice. In vivo, insulin promotes phosphatidylinositol 3-kinase (PI3K) signaling in MCH neurons, and cell-type-specific deletion of the insulin receptor (IR) abrogates this response. While lean mice lacking the IR in MCH neurons (IR(ΔMCH)) exhibit no detectable metabolic phenotype under normal diet feeding, they present with improved locomotor activity and insulin sensitivity under high-fat-diet-fed, obese conditions...
December 6, 2016: Cell Reports
https://www.readbyqxmd.com/read/27926487/egf-induces-epithelial-mesenchymal-transition-and-cancer-stem-like-cell-properties-in-human-oral-cancer-cells-via-promoting-warburg-effect
#5
Qilin Xu, Qunzhou Zhang, Yasutaka Ishida, Souren Hajjar, Xudong Tang, Haoran Shi, Chi V Dang, Anh D Le
"Warburg effect", the enhanced glycolysis or aerobic glycolysis, confers cancer cells the ability to survive and proliferate even under stressed conditions. In this study, we explored the role of epidermal growth factor (EGF) in orchestrating Warburg effect, the epithelial-mesenchymal transition (EMT) process, and the acquisition of cancer stem-like cell properties in human oral squamous cell carcinoma (OSCC) cells. Our results showed that EGF induces EMT process in OSCC cells, which correlates with the acquisition of cancer stem-like properties, including the enrichment of CD44+/CD24- population of cancer cells and an increased expression of CSC-related genes, aldehyde dehydrogenase-1 (ALDH1) and Bmi-1...
December 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27925858/physical-activity-contributes-to-several-sleep-cardiometabolic-health-relationships
#6
Thirumagal Kanagasabai, Michael C Riddell, Chris I Ardern
PURPOSE: To estimate the contribution of accelerometer-derived physical activity to the relationship between sleep and cardiometabolic health. METHODS: Data from the 2005 to 2006 US National Health and Nutritional Examination Survey were used (N = 1226; 20 years+). Metabolic syndrome (MetS) was defined by the Joint Interim Statement, and sleep quality and quantity by the Sleep Disorders Questionnaire. Physical activity intensities were defined by activity thresholds (counts per minute) as sedentary activity (0-99), light intensity (100-759), lifestyle activity (760-2019), moderate intensity (2020-5996), and vigorous intensity (≥5999)...
December 7, 2016: Metabolic Syndrome and related Disorders
https://www.readbyqxmd.com/read/27925416/association-of-a-gain-of-function-variant-in-lgr4-with-central-obesity
#7
Yaoyu Zou, Tinglu Ning, Juan Shi, Maopei Chen, Lin Ding, Ya Huang, Sophie Kauderer, Min Xu, Bin Cui, Yufang Bi, Simin Liu, Jie Hong, Ruixin Liu, Guang Ning, Jiqiu Wang
OBJECTIVE: To determine the relationship of the gain-of-function variant A750T in leucine-rich repeat containing G protein-coupled receptor 4 (LGR4) with central obesity and related metabolic phenotypes. METHODS: The LGR4 A750T (c.2248 G > A) variant was detected by Sanger sequencing in a discovery young population and a validation community-based population with obesity from eastern China. Fat indices determined by anthropometry and computed tomography scans and clinical biochemical measurements were collected for association analysis...
December 7, 2016: Obesity
https://www.readbyqxmd.com/read/27925207/acetate-metabolism-does-not-reflect-astrocytic-activity-contributes-directly-to-gaba-synthesis-and-is-increased-by-silent-information-regulator-1-activation
#8
Benjamin D Rowlands, Matthias Klugmann, Caroline D Rae
[(13) C]acetate is known to label metabolites preferentially in astrocytes rather than neurons and it has consequently been used as a marker for astrocytic activity. Recent discoveries suggest that control of acetate metabolism and its contributions to the synthesis of metabolites in brain is not as simple as first thought. Here, using a Guinea pig brain cortical tissue slice model metabolizing [1-(13) C]D-glucose and [1,2-(13) C]acetate, we investigated control of acetate metabolism and the degree to which it reflects astrocytic activity...
December 7, 2016: Journal of Neurochemistry
https://www.readbyqxmd.com/read/27925195/palmitoleic-acid-improves-metabolic-functions-in-fatty-liver-by-ppar%C3%AE-dependent-ampk-activation
#9
Camila O Souza, Alexandre A S Teixeira, Luana A Biondo, Edson A Lima, Helena A P Batatinha, Jose C Rosa Neto
BACKGROUND: Palmitoleic acid, since described as lipokine, increases glucose uptake by modulation of 5'AMP-activated protein kinase (AMPK), as well as increasing lipolysis by activation of peroxisome proliferator-activated receptor-α (PPARα), in adipose tissue. However in liver, the effects of palmitoleic acid on glucose metabolism and the role of PPARα remain unknown. OBJECTIVE: To investigate whether palmitoleic acid improved the hepatic insulin sensitivity of obese mice...
December 7, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27925193/systemic-and-local-adipose-tissue-in-knee-osteoarthritis
#10
REVIEW
Elisa Belluzzi, Hamza El Hadi, Marnie Granzotto, Marco Rossato, Roberta Ramonda, Veronica Macchi, Raffaele De Caro, Roberto Vettor, Marta Favero
Osteoarthritis is a common chronic joint disorder affecting older people. The knee is the major joint affected. The symptoms of osteoarthritis include limited range of motion, joint swelling, and pain causing disability. There are no disease modifying drugs available, and treatments are mainly focused on pain management. Total knee replacement performed at the end stage of the disease is considered the only cure available. It has been found that obese people have an increased risk to develop not only knee but also hand osteoarthritis...
December 7, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27924922/metabolic-adaptation-to-nutritional-stress-in-human-colorectal-cancer
#11
Masaaki Miyo, Masamitsu Konno, Naohiro Nishida, Toshinori Sueda, Kozo Noguchi, Hidetoshi Matsui, Hugh Colvin, Koichi Kawamoto, Jun Koseki, Naotsugu Haraguchi, Junichi Nishimura, Taishi Hata, Noriko Gotoh, Fumio Matsuda, Taroh Satoh, Tsunekazu Mizushima, Hiroshi Shimizu, Yuichiro Doki, Masaki Mori, Hideshi Ishii
Tumor cells respond to their microenvironment, which can include hypoxia and malnutrition, and adapt their metabolism to survive and grow. Some oncogenes are associated with cancer metabolism via regulation of the related enzymes or transporters. However, the importance of metabolism and precise metabolic effects of oncogenes in colorectal cancer remain unclear. We found that colorectal cancer cells survived under the condition of glucose depletion, and their resistance to such conditions depended on genomic alterations rather than on KRAS mutation alone...
December 7, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27924283/effects-of-the-dietary-detoxification-program-on-serum-%C3%AE-glutamyltransferase-anthropometric-data-and-metabolic-biomarkers-in-adults
#12
Ju Ah Kim, Jin Young Kim, Seung Wan Kang
BACKGROUND: Persistent Organic Pollutants (POPs) are well-known environmental contaminants which are associated with chronic diseases. As foods are the major sources of human exposure to toxic pollutants, we developed an integrated dietary and education program to eliminate the chemical toxin throughout the human body. The present study evaluated effects of the dietary detoxification program on serum γ-glutamyltransferase (GGT), anthropometric data and metabolic biomarkers in adults...
September 2016: Journal of Lifestyle Medicine
https://www.readbyqxmd.com/read/27924111/effect-of-magnesium-supplementation-on-glucose-metabolism-in-people-with-or-at-risk-of-diabetes-a-systematic-review-and-meta-analysis-of-double-blind-randomized-controlled-trials
#13
N Veronese, S Watutantrige-Fernando, C Luchini, M Solmi, G Sartore, G Sergi, E Manzato, M Barbagallo, S Maggi, B Stubbs
No abstract text is available yet for this article.
December 2016: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/27924082/duodenal-endoluminal-barrier-sleeve-alters-gut-microbiota-of-zdf-rats
#14
T Kim, C L Holleman, T Ptacek, C D Morrow, K M Habegger
BACKGROUND/OBJECTIVES: The combination of energy dense diets and reduced energy expenditure in modern society has escalated the prevalence of obesity and obesity-related comorbidities. Among these disease-states, type-2 diabetics (T2D) are disproportionately associated with obesity, suggesting a shared etiology. In conjunction with defects in hormonal and inflammatory states, obesity and T2D are also characterized by dysbiosis. METHODS: We have recently described the beneficial effects of duodenal nutrient exclusion, as induced by the duodenal endoluminal sleeve (DES); including body weight loss, prevented fat mass accumulation, and improved glucose tolerance in the ZDF rat, a rodent model of obesity and type-2 diabetes (T2D)...
December 7, 2016: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/27923989/metabolic-control-of-tobacco-pollination-by-sugars-and-invertases
#15
Marc Goetz, Anne Guivarc'h, Jörg Hirsche, Martin Andreas Bauerfeind, María-Cruz González, Tae Kyung Hyun, Seung Hee Eom, Dominique Chriqui, Thomas Engelke, Dominik K Großkinsky, Thomas Roitsch
Pollination in flowering plants is initiated by germination of pollen grains on stigmas followed by fast growth of pollen tubes representing highly energy-consuming processes. The symplastic isolation of pollen grains and tubes requires import of sucrose available in the apoplast. We show that the functional coupling of sucrose cleavage by invertases and uptake of the released hexoses by monosaccharide transporters are critical for pollination in tobacco. Transcript profiling, in situ hybridization and immunolocalization of extracellular invertases and two monosaccharide transporters in vitro and in vivo support the functional coupling in supplying carbohydrates for pollen germination and tube growth evidenced by spatiotemporally coordinated expression...
December 6, 2016: Plant Physiology
https://www.readbyqxmd.com/read/27923980/humanin-skeletal-muscle-protein-levels-increase-after-resistance-training-in-men-with-impaired-glucose-metabolism
#16
Eva-Karin Gidlund, Ferdinand von Walden, Mika Venojärvi, Ulf Risérus, Olli J Heinonen, Jessica Norrbom, Carl Johan Sundberg
Humanin (HN) is a mitochondrially encoded and secreted peptide linked to glucose metabolism and tissue protecting mechanisms. Whether skeletal muscle HN gene or protein expression is influenced by exercise remains unknown. In this intervention study we show, for the first time, that HN protein levels increase in human skeletal muscle following 12 weeks of resistance training in persons with prediabetes. Male subjects (n = 55) with impaired glucose regulation (IGR) were recruited and randomly assigned to resistance training, Nordic walking or a control group...
December 2016: Physiological Reports
https://www.readbyqxmd.com/read/27923829/glucose-metabolism-reprogrammed-by-overexpression-of-ikk%C3%AE%C2%B5-promotes-pancreatic-tumor-growth
#17
Haseeb Zubair, Shafquat Azim, Sanjeev Kumar Srivastava, Aamir Ahmad, Arun Bhardwaj, Mohammad Aslam Khan, Girijesh Kumar Patel, Sumit Arora, James Elliot Carter, Seema Singh, Ajay Pratap Singh
Aberrant expression of the kinase IKKε in pancreatic ductal adenocarcinoma (PDAC) has been associated with poor prognosis. In this study, we define a pathobiologic function for IKKε in reprogramming glucose metabolism and driving progression in PDAC. Silencing IKKε in PDAC cells, which overexpressed it endogenously, was sufficient to reduce malignant cell growth, clonogenic potential, glucose consumption, lactate secretion, and expression of genes involved in glucose metabolism, without impacting the basal oxygen consumption rate...
October 20, 2016: Cancer Research
https://www.readbyqxmd.com/read/27923787/type-of-supplemented-simple-sugar-not-merely-calorie-intake-determines-adverse-effects-on-metabolism-and-aortic-function-in-female-rats
#18
Gemma Sangüesa, Sonali Shaligram, Farjana Akhter, Núria Roglans, Juan C Laguna, Roshanak Rahimian, Marta Alegret
High consumption of simple sugars causes adverse cardio-metabolic effects. We investigated the mechanisms underlying the metabolic and vascular effects of glucose or fructose intake and determined whether these effects are exclusively related to increased calorie consumption. Female Sprague-Dawley rats were supplemented with 20% w/v glucose or fructose for 2 months, and plasma analytes and aortic response to vasodilator and vasoconstrictor agents were determined. Expression of molecules associated with lipid metabolism, insulin signalling and vascular response were evaluated in hepatic and/or aortic tissues...
December 6, 2016: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/27923453/circulating-micrornas-as-biomarkers-for-metabolic-disease
#19
REVIEW
Marcelina Párrizas, Anna Novials
Incidence of diabetes and other metabolic disorders is increasing worldwide, with almost half the cases remaining undiagnosed. This is cause for concern as poor management of glucose or lipid levels causes tissue damage that may result in micro- or macrovascular complications. Current methods of diagnosing metabolic disorders do not provide any clues on disease aetiology or their posterior evolution and incidence of complications, which are the main cause of disease-associated morbidity. Circulating microRNAs found in blood change with the physiological condition of the organism and may help to: (1) identify people at risk of developing metabolic disease, (2) diagnose diabetes or other metabolic disorders on the basis of their aetiology, (3) predict the development of complications, and (4) monitor response to treatment...
October 2016: Best Practice & Research. Clinical Endocrinology & Metabolism
https://www.readbyqxmd.com/read/27923406/ameliorative-effects-of-rutin-against-metabolic-biochemical-and-hormonal-disturbances-in-polycystic-ovary-syndrome-in-rats
#20
Sarwat Jahan, Faryal Munir, Suhail Razak, Anam Mehboob, Qurat Ul Ain, Hizb Ullah, Tayyaba Afsar, Ghazala Shaheen, Ali Almajwal
BACKGROUND: Polycystic ovary syndrome (PCOS) is the most prevalent endocrinopathy in women of reproductive age. The study was commenced to assess the favorable effects of Rutin against metabolic, biochemical, histological, and androgenic aspects of polycystic ovary syndrome in rats. METHODS: Female Sprague-Dawley rats were administered letrozole (1 mg/kg) per orally (p.o) for a period of 21 days for the induction of PCOS, followed by dose of rutin (100 mg/kg and 150 mg/kg, p...
December 7, 2016: Journal of Ovarian Research
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