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https://www.readbyqxmd.com/read/29454067/considering-our-methods-methodological-issues-with-rodent-models-of-appetite-and-obesity-research
#1
Thomas A Lutz
A large number of animal models are currently used in appetite and obesity research. Because the worldwide incidence of obesity continues to climb, it is imperative that animal models sharing characteristics of human obesity and its co-morbidities be used appropriately in the quest for novel preventions or treatments. There is probably no animal model, at least in rodents, that recapitulates all aspects of "common" human obesity and its comorbidities, but rodent models allow insight into specific mechanisms of disease or its consequences...
February 14, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29453923/magnesium-upregulates-insulin-receptor-and-glucose-transporter-4-in-streptozotocin-nicotinamide-induced-type-2-diabetic-rats
#2
Ayodele Olufemi Morakinyo, Titilola Aderonke Samuel, Daniel Abiodun Adekunbi
OBJECTIVE: We investigated the effects of magnesium supplementation on glucose tolerance, insulin sensitivity, oxidative stress as well as the concentration of insulin receptor and glucose transporter-4 in streptozotocin-nicotinamide induced type-2 diabetic (T2D) rats. METHODS: Rats were divided into four groups designated as: 1) control (CTR); 2) diabetic untreated (DU); 3) diabetic treated with 1 mg of Mg/kg diet (Mg1-D); and 4) diabetic treated with 2 mg of Mg/kg diet (Mg2-D)...
January 1, 2018: Endocrine Regulations
https://www.readbyqxmd.com/read/29453793/cross-cultural-comparison-of-predictors-for-self-care-behaviors-in-patients-with-type-2-diabetes
#3
Kaori Ikeda, Shimpei Fujimoto, Beth Morling, Shiho Ayano-Takahara, Shin-Ichi Harashima, Yukiko Uchida, Nobuya Inagaki
The aim of this study is to evaluate how culture moderates the behavioral and psychosocial predictors of diabetes self-care activities. Patients with type 2 diabetes were recruited in the outpatient department at two sites: Kyoto University hospital in Japan and the Christiana Care Health System in the United States. The data was collected by survey using questionnaires including questions on the frequency of self-care activities, behavioral and psychosocial predictors, and other background information from 149 Japanese patients and 48 American patients...
February 17, 2018: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/29453462/gq-11-a-new-ppar-agonist-improves-obesity-induced-metabolic-alterations-in-ldlr-mice
#4
Jacqueline C Silva, Edson M de Oliveira, Walter M Turato, Gustavo H G Trossini, Vinícius G Maltarollo, Marina G R Pitta, Ivan R Pitta, Beatriz de Las Heras, Lisardo Boscá, Martina Rudnicki, Dulcineia S P Abdalla
BACKGROUND: Obesity and insulin resistance/diabetes are important risk factors for cardiovascular diseases and demand safe and efficacious therapeutics. OBJECTIVE: To assess the effects of a new thiazolidine compound-GQ-11-on obesity and insulin resistance induced by a diabetogenic diet in LDL receptor-deficient (LDLr -/- ) mice. METHODS: Molecular docking simulations of GQ-11, PPARα and PPARγ structures were performed. Male C57BL/6J LDLr -/- mice fed a diabetogenic diet for 24 weeks were treated with vehicle, GQ-11 or pioglitazone or (20 mg/kg/day) for 28 days by oral gavage...
January 30, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29453154/unique-pharmacology-of-a-novel-allosteric-agonist-sensitizer-insulin-receptor-monoclonal-antibody
#5
Simon A Hinke, Anne M Cieniewicz, Thomas Kirchner, Katharine D'Aquino, Rupesh Nanjunda, Jason Aligo, Robert Perkinson, Philip Cooper, Ken Boayke, Mark L Chiu, Steve Jarantow, Eilyn R Lacy, Yin Liang, Dana L Johnson, Jean M Whaley, Russell B Lingham, Anthony J Kihm
OBJECTIVE: Insulin resistance is a key feature of Type 2 Diabetes (T2D), and improving insulin sensitivity is important for disease management. Allosteric modulation of the insulin receptor (IR) with monoclonal antibodies (mAbs) can enhance insulin sensitivity and restore glycemic control in animal models of T2D. METHODS: A novel human mAb, IRAB-A, was identified by phage screening using competition binding and surface plasmon resonance assays with the IR extracellular domain...
February 3, 2018: Molecular Metabolism
https://www.readbyqxmd.com/read/29451419/physical-exercise-nutrition-and-hormones-three-pillars-to-fight-sarcopenia
#6
Paolo Sgrò, Massimiliano Sansone, Andrea Sansone, Stefania Sabatini, Paolo Borrione, Francesco Romanelli, Luigi Di Luigi
BACKGROUND: Sarcopenia is a pathophysiological condition diffused in elderly people; it represents a social issue due to the longer life expectancy and the growing aging population. It affects negatively quality of life and it represents a risk factor for other pathologies, such as diabetes, cardiovascular disease, and obesity. No silver bullet exists to hinder sarcopenia, but it may be counteracted by physical exercise, nutrition, and a proper endocrine milieu. Indeed, we aim to analyze the scientific literature to give to clinician effective advices to counteract sarcopenia...
February 16, 2018: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
https://www.readbyqxmd.com/read/29450114/flavonoid-rich-extract-of-chromolaena-odorata-modulate-circulating-glp-1-in-wistar-rats-computational-evaluation-of-tgr5-involvement
#7
Olaposi Idowu Omotuyi, Oyekanmi Nash, Olumide Kayode Inyang, Joyce Ogidigo, Ojochenemi Enejoh, Okiemute Okpalefe, Tsuyoshi Hamada
Chromolaena odorata is a major bio-resource in folkloric treatment of diabetes. In the present study, its anti-diabetic component and underlying mechanism were investigated. A library containing 140 phytocompounds previously characterized from C. odorata was generated and docked (Autodock Vina) into homology models of dipeptidyl peptidase (DPP)-4, Takeda-G-protein-receptor-5 (TGR5), glucagon-like peptide 1 (GLP1) receptor, renal sodium dependent glucose transporter (SGLUT)-1/2 and nucleotide-binding oligomerization domain (NOD) proteins 1&2...
February 2018: 3 Biotech
https://www.readbyqxmd.com/read/29449958/a-mobile-phone-based-program-to-promote-healthy-behaviors-among-adults-with-prediabetes-study-protocol-for-a-pilot-randomized-controlled-trial
#8
Dina H Griauzde, Jeffrey T Kullgren, Brad Liestenfeltz, Caroline Richardson, Michele Heisler
Background: Rates of participation in Diabetes Prevention Programs (DPPs) are low. This may be due, in part, to low levels of autonomous motivation (i.e., motivation that arises from internal sources and sustains healthy behaviors over time) to prevent type 2 diabetes (T2DM) among many individuals with prediabetes. Mobile health (mHealth) technologies that incorporate principles from the Self-Determination Theory offer an effective and scalable approach to increase autonomous motivation levels...
2018: Pilot and Feasibility Studies
https://www.readbyqxmd.com/read/29449952/variations-of-dietary-intake-by-glycemic-status-and-hispanic-latino-heritage-in-the-hispanic-community-health-study-study-of-latinos-hchs-sol
#9
Sarah S Casagrande, Daniela Sotres-Alvarez, Larissa Avilés-Santa, Matthew J O'Brien, Cristina Palacios, Cynthia M Pérez, Samantha A Reina, Xueyin Wang, Qibin Qi, Aida L Giachello, Rebeca A Espinoza Giacinto, Catherine C Cowie
Objective: A healthy diet is important for diabetes prevention and control; however, few studies have assessed dietary intake among US Hispanics/Latinos, a diverse population with a significant burden of diabetes. To address this gap in the literature, we determined intake of energy, macro/micronutrients, and vitamin supplements among Hispanics/Latinos by glycemic status and heritage. Research design and methods: Cross-sectional study of adults aged 18-74 years from the Hispanic Community Health Study/Study of Latinos (2008-2011) with complete baseline data on glycemic status and two 24-hour dietary recalls (n=13 089)...
2018: BMJ Open Diabetes Research & Care
https://www.readbyqxmd.com/read/29449868/prediction-of-methionine-and-homocysteine-levels-in-zucker-diabetic-fatty-zdf-rats-as-a-t2dm-animal-model-after-consumption-of-a-methionine-rich-diet
#10
Nayoung Han, Jung-Woo Chae, Jihyun Jeon, Jaeyeon Lee, Hyun-Moon Back, Byungjeong Song, Kwang-Il Kwon, Sang Kyum Kim, Hwi-Yeol Yun
Background: Although alterations in the methionine metabolism cycle (MMC) have been associated with vascular complications of diabetes, there have not been consistent results about the levels of methionine and homocysteine in type 2 diabetes mellitus (T2DM). The aim of the current study was to predict changes in plasma methionine and homocysteine concentrations after simulated consumption of methionine-rich foods, following the development of a mathematical model for MMC in Zucker Diabetic Fatty (ZDF) rats, as a representative T2DM animal model...
2018: Nutrition & Metabolism
https://www.readbyqxmd.com/read/29449530/the-type-2-diabetes-associated-hmg20a-gene-is-mandatory-for-islet-beta-cell-functional-maturity
#11
Jose M Mellado-Gil, Esther Fuente-Martín, Petra I Lorenzo, Nadia Cobo-Vuilleumier, Livia López-Noriega, Alejandro Martín-Montalvo, Irene de Gracia Herrera Gómez, Maria Ceballos-Chávez, Laura Gómez-Jaramillo, Antonio Campos-Caro, Silvana Y Romero-Zerbo, Júlia Rodríguez-Comas, Joan-Marc Servitja, Gemma Rojo-Martinez, Abdelkrim Hmadcha, Bernat Soria, Marco Bugliani, Piero Marchetti, Francisco J Bérmudez-Silva, Jose C Reyes, Manuel Aguilar-Diosdado, Benoit R Gauthier
HMG20A (also known as iBRAF) is a chromatin factor involved in neuronal differentiation and maturation. Recently small nucleotide polymorphisms (SNPs) in the HMG20A gene have been linked to type 2 diabetes mellitus (T2DM) yet neither expression nor function of this T2DM candidate gene in islets is known. Herein we demonstrate that HMG20A is expressed in both human and mouse islets and that levels are decreased in islets of T2DM donors as compared to islets from non-diabetic donors. In vitro studies in mouse and human islets demonstrated that glucose transiently increased HMG20A transcript levels, a result also observed in islets of gestating mice...
February 15, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29447397/barriers-and-facilitators-of-diabetes-services-in-nepal-a-qualitative-evaluation
#12
Nicole Ide, James P LoGerfo, Biraj Karmacharya
For the past three decades, the burden of diabetes in Nepal has been steadily increasing, with an estimated 3% annual increase since the year 2000. Although the burden is increasing, the methods of addressing the challenge have remained largely unchanged. This study sought to assess the current state of diabetes services provided by health facilities and to identify the major barriers that people with diabetes commonly face in Nepal. For this qualitative study, we selected five health facilities of varying levels and locations...
February 13, 2018: Health Policy and Planning
https://www.readbyqxmd.com/read/29447347/cultural-adaptation-of-an-evidence-based-lifestyle-intervention-for-diabetes-prevention-in-chinese-women-at-risk-for-diabetes-results-of-a-randomized-trial
#13
Zenong Yin, Judith Perry, Xiaoqin Duan, Meizi He, Ryan Johnson, Yanling Feng, Mark Strand
Background: The prevalence of both obesity and type 2 diabetes has been on the rise in China. This randomized controlled trial was conducted to test the feasibility and effectiveness of an evidence-based diabetes prevention program in Yuci, Shanxi Province, China from 2012 to 2014. Methods: Women with pre-diabetes, ages 25-65 y, were assigned randomly to a comparison (n=75) or 6-mo lifestyle intervention condition (n=109). Weight, fasting glucose, hemoglobin A1c and self-reported diet and physical activity were measured at baseline, 6 mo and 12 mo...
February 13, 2018: International Health
https://www.readbyqxmd.com/read/29447215/maternal-high-fat-diet-associated-with-altered-gene-expression-dna-methylation-and-obesity-risk-in-mouse-offspring
#14
Madeline Rose Keleher, Rabab Zaidi, Shyam Shah, M Elsa Oakley, Cassondra Pavlatos, Samir El Idrissi, Xiaoyun Xing, Daofeng Li, Ting Wang, James M Cheverud
We investigated maternal obesity in inbred SM/J mice by assigning females to a high-fat diet or a low-fat diet at weaning, mating them to low-fat-fed males, cross-fostering the offspring to low-fat-fed SM/J nurses at birth, and weaning the offspring onto a high-fat or low-fat diet. A maternal high-fat diet exacerbated obesity in the high-fat-fed daughters, causing them to weigh more, have more fat, and have higher serum levels of leptin as adults, accompanied by dozens of gene expression changes and thousands of DNA methylation changes in their livers and hearts...
2018: PloS One
https://www.readbyqxmd.com/read/29446938/hypoglycemic-effect-of-pyrodextrins-with-different-molecular-weights-and-digestibilities-in-diet-induced-obese-mice
#15
Yan Cao, Xiaoli Chen, Ying Sun, Jialiang Shi, Xiaojuan Xu, Yong-Cheng Shi
Pyrodextrin shares some properties of resistant starch which is metabolically beneficial, and has potential applications as a functional food. In this study, we report that oral administration of pyrodextrin (50 mg/kg/d for 7 weeks) decreased the blood glucose (from 9.18±1.47 to 7.67±0.42 mmol/L), serum HbA1c, triglycerides, adipocyte size, and body weights (from 24.4±1.2 to 22.5±1.2 g) in high-fat diet-induced obese mice. The Western blotting analysis suggested that pyrodextrins decreased the intestinal SGLT-1 and GLUT-2 expression to ~70% and ~60% of the obese control to slow down glucose transportation from gut into blood, and improved the hepatic metabolism tentatively...
February 15, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29446817/depression-in-tunisian-type-2-diabetic-patients-prevalence-and-association-to-glycemic-control-and-to-treatment-compliance
#16
Faten Ellouze, Rahma Damak, Mehdi El Karoui, Haifa Mami, Mohamed Fadhel M'rad, Ghada Hamdi, Abdelmajid Abid
AIM: to study the prevalence of depression in type 2 diabetes and to seek for a relationship between glycemic control and treatment adherence. METHODS: This cross-sectional study was carried out at the outpatient department of the Tunis nutrition institute. A total of 100 diabetic patients followed for Type 2 diabetes were randomly recruited. We used a structured questionnaire to collect patients' socio-demographic, clinical and therapeutic data. The treatment adherence was assessed by using MAS, Glycemic control according to blood glucose and glycated hemoglobin (HbA1c) levels and depression and anxiety by administering a dialectal Arabic validated version of Hospital Anxiety and Depression Scale (HAD)...
March 2017: La Tunisie Médicale
https://www.readbyqxmd.com/read/29446746/mechanisms-involved-in-glycemic-control-promoted-by-exercise-in-diabetics
#17
Eric Francelino Andrade, Viviam de Oliveira Silva, Debora Ribeiro Orlando, Luciano Jose Pereira
Diabetes mellitus is a metabolic disease characterized by high glycemic levels for long periods. This disease has a high prevalence in the world population, being currently observed an increase in its incidence. This fact is mainly due to the sedentary lifestyle and hypercaloric diets. Non-pharmacological interventions for glycemic control include exercise, which promotes changes in skeletal muscle and adipocytes. Thus, increased glucose uptake by skeletal muscle and decreased insulin resistance through modulating adipocytes are the main factors that improve glycemic control against diabetes...
February 14, 2018: Current Diabetes Reviews
https://www.readbyqxmd.com/read/29446544/association-between-plasma-trans-fatty-acid-concentrations-and-diabetes-in-a-nationally-representative-sample-of-u-s-adults
#18
Buyun Liu, Yangbo Sun, Linda G Snetselaar, Qi Sun, Quanhe Yang, Zefeng Zhang, Liegang Liu, Frank B Hu, Wei Bao
BACKGROUND: High trans fatty acid (TFA) diet induces insulin resistance in experimental studies in rodent models and primates. However, previous epidemiological studies on the association between trans fatty acids (TFAs), mainly based on self-reported intake from diet, and diabetes have yielded conflicting results. We examined the associations of objectively-measured plasma TFA concentrations with diabetes in a large population-based study among U.S. adults. METHODS: We included 3,801 participants aged 20 years or older from the National Health and Nutrition Examination Survey 1999-2000 and 2009-2010...
February 15, 2018: Journal of Diabetes
https://www.readbyqxmd.com/read/29445913/dietary-pattern-associated-with-selenoprotein-p-and-mri-derived-body-fat-volumes-liver-signal-intensity-and-metabolic-disorders
#19
Romina di Giuseppe, Sandra Plachta-Danielzik, Manja Koch, Ute Nöthlings, Sabrina Schlesinger, Jan Borggrefe, Marcus Both, Hans-Peter Müller, Jan Kassubek, Gunnar Jacobs, Wolfgang Lieb
PURPOSE: The association of complex dietary patterns with circulating selenoprotein P (SELENOP) levels in humans is unknown. In a general population sample, we aimed to identify a dietary pattern explaining inter-individual variation in circulating SELENOP concentrations and to study this pattern in relation to prevalent diabetes, metabolic syndrome (MetS), MRI-determined total volumes of visceral (VAT) and subcutaneous (SAT) abdominal adipose tissue, and liver signal intensity/fatty liver disease...
February 14, 2018: European Journal of Nutrition
https://www.readbyqxmd.com/read/29445083/fibroblast-growth-factor-21-prevents-diabetic-cardiomyopathy-via-ampk-mediated-antioxidation-and-lipid-lowering-effects-in-the-heart
#20
Hong Yang, Anyun Feng, Sundong Lin, Lechu Yu, Xiufei Lin, Xiaoqing Yan, Xuemian Lu, Chi Zhang
Our previous studies showed that both exogenous and endogenous FGF21 inhibited cardiac apoptosis at the early stage of type 1 diabetes. Whether FGF21 induces preventive effect on type 2 diabetes-induced cardiomyopathy was investigated in the present study. High-fat-diet/streptozotocin-induced type 2 diabetes was established in both wild-type (WT) and FGF21-knockout (FGF21-KO) mice followed by treating with FGF21 for 4 months. Diabetic cardiomyopathy (DCM) was diagnosed by significant cardiac dysfunction, remodeling, and cardiac lipid accumulation associated with increased apoptosis, inflammation, and oxidative stress, which was aggravated in FGF21-KO mice...
February 14, 2018: Cell Death & Disease
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