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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/27926856/insulin-dependent-activation-of-mch-neurons-impairs-locomotor-activity-and-insulin-sensitivity-in-obesity
#2
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/27926473/growth-differentiation-factor-15-increases-following-oral-glucose-ingestion-effect-of-meal-composition-and-obesity
#3
Marie Helene Schernthaner-Reiter, Dominik Kasses, Christina Tugendsam, Michaela Riedl, Slobodan Peric, Gerhard Prager, Michael Krebs, Miriam Promintzer-Schifferl, Martin Clodi, Anton Luger, Greisa Vila
OBJECTIVE: Growth differentiation factor 15 (GDF15) is a cardiovascular biomarker belonging to the transforming growth factor-β superfamily. Increased GDF15 concentrations are associated with insulin resistance, diabetes and obesity. We investigated the physiological effects of meal composition and obesity on the regulation of systemic GDF15 levels. DESIGN: Lean (n = 8) and obese (n = 8) individuals received a carbohydrate- or fat-rich meal, a 75 g oral glucose load (OGTT) or short-term fasting...
December 2016: European Journal of Endocrinology
https://www.readbyqxmd.com/read/27926472/sweetened-beverage-intake-and-risk-of-latent-autoimmune-diabetes-in-adults-lada-and-type-2-diabetes
#4
Josefin E Löfvenborg, Tomas Andersson, Per-Ola Carlsson, Mozhgan Dorkhan, Leif Groop, Mats Martinell, Tiinamaija Tuomi, Alicja Wolk, Sofia Carlsson
OBJECTIVE: Sweetened beverage intake is associated with increased risk of type 2 diabetes, but its association with autoimmune diabetes is unclear. We aimed to investigate sweetened beverage intake and risk of latent autoimmune diabetes in adults (LADA); autoimmune diabetes with features of type 2 diabetes. DESIGN/METHODS: Data from a Swedish population-based study was used, including incident cases of LADA (n = 357) and type 2 diabetes (n = 1136) and randomly selected controls (n = 1371)...
December 2016: European Journal of Endocrinology
https://www.readbyqxmd.com/read/27925359/effect-of-aerobic-exercise-intervention-on-markers-of-insulin-resistance-in-breast-cancer-women
#5
E Bruno, E Roveda, J Vitale, A Montaruli, F Berrino, A Villarini, E Venturelli, G Gargano, L Galasso, A Caumo, F Carandente, P Pasanisi
Insulin may affect breast cancer (BC) risk and prognosis. Exercise reduces insulin in obese BC survivors. We designed a randomised controlled trial to test the effect of an aerobic exercise intervention (AEI) on insulin parameters and body composition in non-obese BC women without insulin resistance. Thirty-eight BC women were randomised into an intervention group (IG = 18) or control group (CG = 20). IG participated in a structured AEI for 3 months, while CG received only the Word Cancer Research Fund/American Institute Cancer Research (WCRF/AICR) recommendation to be physically active...
December 7, 2016: European Journal of Cancer Care
https://www.readbyqxmd.com/read/27925245/helminths-hygiene-hypothesis-and-type-2-diabetes
#6
Karin de Ruiter, Dicky L Tahapary, Erliyani Sartono, Pradana Soewondo, Taniawati Supali, Johannes W A Smit, Maria Yazdanbakhsh
Worldwide, there is little overlap between the prevalence of soil-transmitted helminths and type 2 diabetes (T2D). Helminth-induced type 2 immune responses and immune regulatory network might modulate the obesity-induced activation of inflammatory pathways that are associated with the development of insulin resistance, a strong predictor of the development of T2D. However, other factors such as helminth-associated changes in adiposity and gut microbiome might also contribute to improved metabolic outcomes. In this review we summarize epidemiological evidence for the link between helminths and T2D and discuss the potential mechanisms, based on findings from experimental studies as well as the limited number of studies in humans...
December 7, 2016: Parasite Immunology
https://www.readbyqxmd.com/read/27924915/serum-uric-acid-is-independently-and-linearly-associated-with-risk-of-nonalcoholic-fatty-liver-disease-in-obese-chinese-adults
#7
Chang-Qin Liu, Chun-Mei He, Ning Chen, Dongmei Wang, Xiulin Shi, Yongwen Liu, Xin Zeng, Bing Yan, Suhuan Liu, Shuyu Yang, Xiaoying Li, Xuejun Li, Zhibin Li
The present study aimed to explore the independent association and potential pathways between serum uric acid (SUA) and nonalcoholic fatty liver disease (NAFLD). 1365 community-living obese Chinese adults who received hepatic ultrasonography scanning were included. The prevalence rates of NAFLD were 71.5% for men and 53.8% for women. Compared with controls, NAFLD subjects showed significantly increased SUA levels (333.3 ± 84.9 v.s. 383.4 ± 93.7 μmol/L) and prevalence rate of hyperuricemia (HUA) (25...
December 7, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27923524/the-therapeutic-potential-of-metabolic-hormones-in-the-treatment-of-age-related-cognitive-decline-and-alzheimer-disease
#8
REVIEW
John Grizzanti, Hyoung-Gon Lee, Antoni Camins, Merce Pallas, Gemma Casadesus
Aging leads to a number of physiological alterations, specifically changes in circulating hormone levels, increases in fat deposition, decreases in metabolism, changes in inflammatory responses, and reductions in growth factors. These progressive changes in physiology and metabolism are exacerbated by modern culture and Western diet and give rise to diseases such as obesity, metabolic syndrome, and type 2 (non-insulin-dependent) diabetes (T2D). These age and lifestyle-related metabolic diseases are often accompanied by insulin and leptin resistance, as well as aberrant amylin production and signaling...
November 8, 2016: Nutrition Research
https://www.readbyqxmd.com/read/27923328/modeling-stroma-induced-drug-resistance-in-a-tissue-engineered-tumor-model-of-ewing-sarcoma
#9
Marco Santoro, Brian A Menegaz, Salah-Eddine Lamhamedi-Cherradi, Eric R Molina, Danielle Wu, Waldemar Priebe, Joseph A Ludwig, Antonios G Mikos
Three-dimensional (3D) tumor models are gaining traction in the research community given their capacity to mimic aspects of the tumor microenvironment absent in monolayer systems. In particular, the ability to spatiotemporally control cell placement within ex vivo 3D systems has enabled the study of tumor-stroma interactions. Furthermore, by regulating biomechanical stimuli, one can reveal how biophysical cues affect stromal cell phenotype and how their phenotype impacts tumor drug sensitivity. Both tumor architecture and shear force have profound effects on Ewing sarcoma (ES) cell behavior and are known to elicit ligand-mediated activation of the insulin-like growth factor-1 receptor (IGF-1R), thereby mediating resistance of ES cells to IGF-1R inhibitors...
December 6, 2016: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/27923249/thyroid-function-in-human-obesity-underlying-mechanisms
#10
L C Fontenelle, M M Feitosa, J S Severo, T E C Freitas, J B S Morais, F L Torres-Leal, G S Henriques, D do Nascimento Marreiro
Obesity is associated with several metabolic and endocrine disorders; and changes in plasma concentrations, secretion patterns, and clearance of various hormones are observed in obese patients. In this context, recent research has shown that overweight can influence the function of the thyroid gland, usually leading to increased thyrotropin concentrations and changes in the ratio between the hormones triiodothyronine and thyroxine, though within the normal range. The etiology of these changes is still unclear; however, several mechanisms have been proposed including the adaptive process to increase energy expenditure, hyperleptinemia, changes in the activity of deiodinases, the presence of thyroid hormones resistance, chronic low-grade inflammation, and insulin resistance...
December 2016: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27923166/a-comparative-systematic-review-of-yasmin-drospirenone-pill-versus-standard-treatment-options-for-symptoms-of-polycystic-ovary-syndrome
#11
REVIEW
Jing Li, Jing Ren, Wenxia Sun
OBJECTIVES: To systematically review the impact of Yasmin (drospirenone pill) compares with other standard treatments for symptoms of Polycystic Ovary Syndrome (PCOS). STUDY DESIGN: The relevant studies of the randomized controlled trials in women with PCOS treated with drospirenone were retrieved and the systematic evaluation was conducted. RESULTS: Eighteen articles were included. Compared with drospirenone (DRSP) monotherapy, DRSP plus metformin was better in reducing body mass index (BMI), luteinizing hormone (LH) and low-density lipoprotein cholesterol (LDL-C)...
November 16, 2016: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/27922941/exercise-training-ameliorates-glucosamine-induced-insulin-resistance-in-ovariectomized-rats
#12
Chung-Hwan Chen, Tsang-Hai Huang, Tsung-Lin Cheng, Chi-Fen Chang, Chau-Zen Wang, Meng-Hsing Wu, Lin Kang
OBJECTIVE: Glucosamine (GlcN), which has been reported to induce insulin resistance (IR), is a popular nutritional supplement used to treat osteoarthritis in menopausal women. We previously demonstrated that GlcN treatment caused IR in ovariectomized rats by reducing the expression of glucose transport protein subtype 4 (GLUT-4) in skeletal muscle. In the present study, we hypothesized that endurance exercise training can reverse GlcN-induced IR. METHODS: Fifty female rats were randomly divided into five groups with 10 rats in each group: (1) sham-operated group; (2) sham-operated group with GlcN treatment for 14 days; (3) ovariectomy (OVX) group; (4) OVX with GlcN treatment; and (5) OVX with GlcN treatment followed by exercise training (running program) for 8 weeks...
December 5, 2016: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/27922820/rapamycin-treatment-benefits-glucose-metabolism-in-mouse-models-of-type-2-diabetes
#13
Peter C Reifsnyder, Kevin Flurkey, Austen Te, David E Harrison
Numerous studies suggest that rapamycin treatment promotes insulin resistance, implying that rapamycin could have negative effects on patients with, or at risk for, type 2 diabetes (T2D). New evidence, however, indicates that rapamycin treatment produces some benefits to energy metabolism, even in the context of T2D. Here, we survey 5 mouse models of T2D (KK, KK-Ay, NONcNZO10, BKS-db/db, TALLYHO) to quantify effects of rapamycin on well-recognized markers of glucose homeostasis within a wide range of T2D environments...
November 30, 2016: Aging
https://www.readbyqxmd.com/read/27922752/abnormal-glucose-metabolism-and-high-energy-expenditure-in-idiopathic-pulmonary-arterial-hypertension
#14
Gustavo A Heresi, Steven K Malin, Jarrod W Barnes, Liping Tian, John P Kirwan, Raed A Dweik
RATIONALE: Insulin resistance has emerged as a potential mechanism related to the pathogenesis of idiopathic pulmonary arterial hypertension (IPAH). However, direct measurements of insulin and glucose metabolism have not been performed in IPAH patients to date. OBJECTIVES: To perform comprehensive metabolic phenotyping on humans with IPAH. METHODS: We assessed plasma insulin and glucose using an oral glucose tolerance test and estimated insulin resistance and beta-cell function in 14 IPAH patients and 14 controls matched for age, sex, blood pressure, and body mass index (BMI),...
December 6, 2016: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/27922115/perilipin-5-fine-tunes-lipid-oxidation-to-metabolic-demand-and-protects-against-lipotoxicity-in-skeletal-muscle
#15
Claire Laurens, Virginie Bourlier, Aline Mairal, Katie Louche, Pierre-Marie Badin, Etienne Mouisel, Alexandra Montagner, André Marette, Angelo Tremblay, John S Weisnagel, Hervé Guillou, Dominique Langin, Denis R Joanisse, Cedric Moro
Lipid droplets (LD) play a central role in lipid homeostasis by controlling transient fatty acid (FA) storage and release from triacylglycerols stores, while preventing high levels of cellular toxic lipids. This crucial function in oxidative tissues is altered in obesity and type 2 diabetes. Perilipin 5 (PLIN5) is a LD protein whose mechanistic and causal link with lipotoxicity and insulin resistance has raised controversies. We investigated here the physiological role of PLIN5 in skeletal muscle upon various metabolic challenges...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27922090/mir-146a-mediated-suppression-of-the-inflammatory-response-in-human-adipocytes
#16
Julian Roos, Eveliina Enlund, Jan-Bernd Funcke, Daniel Tews, Karlheinz Holzmann, Klaus-Michael Debatin, Martin Wabitsch, Pamela Fischer-Posovszky
The obesity-associated inflammation of white adipose tissue (WAT) is one of the factors leading to the development of related diseases such as insulin resistance and liver steatosis. Recently, microRNAs (miRNAs) were identified as important regulators of WAT functions. Herein, we cultured human Simpson-Golabi-Behmel syndrome (SGBS) adipocytes with macrophage-conditioned medium (MacCM) and performed an Affimetrix miRNA array to identify miRNAs differentially expressed under inflammatory conditions. We identified 24 miRNAs differentially expressed upon inflammation in human adipocytes and miR-146a was the most up-regulated miRNA species...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27921433/-is-glucosis-only-basic-energy-substrate
#17
Luboš Sobotka
At present time glucose is primarily considered as basic energy substrate. Therefore, it is recommended to give amount of glucose which is necessary for oxidation and energy production. As critical illness is connected with so-called insulin resistance, it is recommended to reduce the glucose dose and maintain normal blood glucose. Glucose, however, may not only be the principal energy substrate but also the substrate necessary for many metabolic reactions, which are essential for normal reactivity and survival...
2016: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27921430/-obstructive-sleep-apnoea-and-type-2-diabetes-mellitus
#18
Andrea Plíhalová, Kateřina Westlake, Jan Polák
Obstructive sleep apnoea syndrome (OSA) is a disease very frequently occurring in people with type 2 diabetes, that significantly increases cardiovascular morbidity and mortality. In a number of studies, OSA has been identified as an independent risk factor for the development of insulin resistance, glucose intolerance and type 2 diabetes mellitus. Disorders of glucose homeostasis in patients with OSA are probably mediated by chronic intermittent hypoxia and/or sleep fragmentation through activation of the sympathetic nervous system, the hypothalamic-pituitary-adrenal stress axis, pro-inflammatory paths or oxidative stress...
2016: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27921426/-gestational-diabetes-mellitus
#19
Hana Krejčí
The present generation of women of childbearing age more frequently suffer from overweight, obesity, initial as well as fully established metabolic syndrome, which together with postponing motherhood until the third decade in life plays an important role in the increasing incidence of gestational diabetes (GDM) that currently affects about 1/5 of pregnant women. However the causal link between diabetes during pregnancy and metabolic diseases in the whole population is mutual. By way of epigenetic changes, maternal diabetes unfavourably programmes metabolism of the offspring, who tend to transfer the disorder to the next generations...
2016: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27921351/the-effect-of-combined-inositol-hexakisphosphate-and-inositol-supplement-in-streptozotocin-induced-type-2-diabetic-rats
#20
Shadae R Foster, Felix O Omoruyi, Juan Bustamante, Ruby L A Lindo, Lowell L Dilworth
Inositol hexakisphosphate (IP6) and inositol both regulate insulin secretion, but their combined use in the management of diabetes deserves investigation. The combined effects of IP6 and inositol supplementation were investigated in streptozotocin-induced type 2 diabetic rats. The following groups of rats were studied for 8 weeks: non-diabetic control, non-diabetic high-fat diet control, diabetic untreated, diabetic rats treated with the combination of IP6 and inositol (650 mg/kg bw) and diabetic rats treated with glibenclamide (10 mg/kg bw)...
December 6, 2016: International Journal of Experimental Pathology
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