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Impaired glucose tolerance

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https://www.readbyqxmd.com/read/28726641/a-plant-fungal-type-phosphoenolpyruvate-carboxykinase-located-in-the-parasite-mitochondrion-ensures-glucose-independent-survival-of-toxoplasma-gondii
#1
Richard Nitzsche, Özlem Günay-Esiyok, Maximilian Tischer, Vyacheslav Zagoriy, Nishith Gupta
Toxoplasma gondii is considered as one of the most successful intracellular pathogens, because it can reproduce in varied nutritional milieus, encountered in diverse host-cell types of essentially any warm-blooded organism. Our earlier work has demonstrated that the acute (tachyzoite) stage of T. gondii depends on cooperativity of glucose and glutamine catabolism to meet biosynthetic demands. Either of these two nutrients can sustain the parasite survival; however, what determines the metabolic plasticity has not been resolved yet...
July 18, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28726334/insulin-sensitivity-across-the-lifespan-from-obese-adolescents-to-obese-adults-with-impaired-glucose-tolerance-who-is-worse-off
#2
Silva Arslanian, Joon Young Kim, Alexis Nasr, Fida Bacha, Hala Tfayli, SoJung Lee, Frederico G S Toledo
OBJECTIVE: Youth type 2 diabetes mellitus (T2DM) occurs decades earlier than adult T2DM and is characterized by high therapeutic failure rates and decreased response to insulin sensitizers suggesting a more severe disease process than in adults. To explain these observations, we hypothesized that insulin resistance is worse in obese youth than adults with impaired glucose tolerance (IGT), a state of high-risk for T2DM. As proof-of-concept, we compared insulin sensitivity between BMI-, sex-, and race-matched obese youth vs adults with IGT...
July 20, 2017: Pediatric Diabetes
https://www.readbyqxmd.com/read/28724177/natural-molecules-for-the-therapy-of-hyperandrogenism-and-metabolic-disorders-in-pcos
#3
V Cappelli, M C Musacchio, A Bulfoni, G Morgante, V De Leo
OBJECTIVE: Polycystic ovary syndrome (PCOS) is the most common endocrinopathy of women of reproductive age and a complex endocrine condition, due to its heterogeneity and uncertainty about its etiology. However, PCOS is also associated with other metabolic abnormalities such as insulin resistance, impaired glucose tolerance, and diabetes. There are few medications that are approved for the most common symptoms of PCOS, leading to the off-label use of medications that were approved for other indications...
June 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28720876/not-performing-an-ogtt-results-in-significant-underdiagnosis-of-pre-diabetes-in-a-high-risk-adult-caucasian-population
#4
A S Meijnikman, C E M De Block, E Dirinck, A Verrijken, I Mertens, B Corthouts, L F Van Gaal
OBJECTIVE: Type 2 diabetes (T2DM) is known to be underdiagnosed. Tests for diagnosis include fasting plasma glucose (FPG), oral glucose tolerance test (OGTT) and HbA1c. HbA1c can be tested in non-fasting conditions. Therefore, general practitioners almost no longer execute OGTT's. We evaluated the performance of OGTT versus HbA1c in a population consisting of overweight and obese subjects, which can be considered a 'high risk' population. RESEARCH DESIGN AND METHODS: 1241 overweight and obese subjects without a history of diabetes (Male/Female: 375/866, age 44±13 y, Body Mass Index 38...
July 19, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28720696/persistent-organic-pollutants-impair-insulin-secretory-function-of-pancreatic-beta-cells-human-and-in-vitro-evidence
#5
Yu-Mi Lee, Chae-Myeong Ha, Se-A Kim, Themis Thoudam, Young-Ran Yoon, Dae-Jung Kim, Hyeon-Chang Kim, Hyo-Bang Moon, Sungmi Park, In-Kyu Lee, Duk-Hee Lee
Persistent organic pollutants (POPs), especially organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs), have emerged as a new risk factor of type 2 diabetes (T2D). We evaluated whether chronic exposure to low-dose POPs affects insulin secretory function of beta-cells in humans and in vitro cells. Serum concentrations of OCPs and PCBs were measured in 200 nondiabetic adults. Mathematical-model-based insulin secretion indices were estimated using a 2-hour 7-sample oral glucose tolerance test. Insulin secretion by INS1E beta-cells was measured after 48-hour treatment with 3 OCPs or a PCB mixture...
July 18, 2017: Diabetes
https://www.readbyqxmd.com/read/28719828/functional-analysis-of-pcsk2-coding-variants-a-founder-effect-in-the-old-order-amish-population
#6
Alexandra Winters, Bruno Ramos-Molina, Timothy S Jarvela, Laura Yerges-Armstrong, Toni I Pollin, Iris Lindberg
AIMS: In humans, noncoding variants of PCSK2, the gene encoding prohormone convertase 2 (PC2), have been previously associated with risk for and age of onset of type 2 diabetes (T2D). The aims of this study were to identify coding variants in PCSK2; to determine their possible association with glucose handling; and to determine functional outcomes for coding variants in biochemical studies. METHODS: Exome-wide genotyping was performed on 1725 Old Order Amish (OOA) subjects...
July 3, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28716975/metabolic-phenotype-in-the-mouse-model-of-osteogenesis-imperfecta
#7
Iris Boraschi-Diaz, Josephine T Tauer, Omar El Rifai, Delphine Guillemette, Geneviève Lefebvre, Frank Rauch, Mathieu Ferron, Svetlana V Komarova
Osteogenesis Imperfecta (OI) is the most common heritable bone fragility disorder, usually caused by dominant mutations in genes coding for collagen type I alpha chains, COL1A1 or COL1A2. Osteocalcin is now recognized as a bone-derived regulator of insulin secretion and sensitivity and glucose homeostasis. Since OI is associated with increased rates of bone formation and resorption, we hypothesized that the levels of undercarboxylated osteocalcin are increased in OI. The objective of this study was to determine changes in osteocalcin and to elucidate the metabolic phenotype in the Col1a1Jrt/+ mouse, a model of dominant OI caused by a Col1a1 mutation...
July 17, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28713570/reduced-first-phase-insulin-secretion-increases-postprandial-lipidemia-in-subjects-with-impaired-glucose-tolerance
#8
Miguel Ángel Gómez-Sámano, Daniel Cuevas-Ramos, Mariana Grajales-Gómez, Marco Escamilla-Márquez, Angelina López-Estrada, Luz Elizabeth Guillén-Pineda, Guadalupe López-Carrasco, Francisco J Gómez-Pérez
OBJECTIVE: It is not clear which phase of insulin secretion is more important to regulate lipoprotein lipase (LPL) activity. After a meal, insulin is released and acts as a major regulator of LPL activity. Postprandial hyperlipidemia is a common comorbidity in subjects with insulin resistance (IR). Therefore this study aimed to evaluate the role of the first-phase insulin secretion (FPIS) on postprandial lipidemia in subjects with IR and impaired glucose tolerance (IGT). RESEARCH DESIGN AND METHODS: This is a cross-sectional, observational and comparative study...
2017: BMJ Open Diabetes Research & Care
https://www.readbyqxmd.com/read/28713332/childhood-maltreatment-is-an-independent-risk-factor-for-prediabetic-disturbances-in-glucose-regulation
#9
Li Li, W Timothy Garvey, Barbara A Gower
AIMS: Childhood maltreatment (CM) is shown to be associated with obesity and depression. However, the relationship of CM to prediabetic state is much less studied. We tested the hypothesis that CM increases the risk for prediabetic state due to glucose intolerance, reduced insulin sensitivity, and beta cell function. METHODS: Oral glucose tolerance test (OGTT)-derived metabolic parameters of glucose tolerance, insulin sensitivity, and beta cell function were measured in 121 participants aged 19-60 years...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28712011/fgf21-attenuates-high-fat-diet-induced-cognitive-impairment-via-metabolic-regulation-and-anti-inflammation-of-obese-mice
#10
Qingzhi Wang, Jing Yuan, Zhanyang Yu, Li Lin, Yinghua Jiang, Zeyuan Cao, Pengwei Zhuang, Michael J Whalen, Bo Song, Xiao-Jie Wang, Xiaokun Li, Eng H Lo, Yuming Xu, Xiaoying Wang
Accumulating studies suggest that overnutrition-associated obesity may lead to development of type 2 diabetes mellitus and metabolic syndromes (MetS). MetS and its components are important risk factors of mild cognitive impairment, age-related cognitive decline, vascular dementia, and Alzheimer's disease. It has been recently proposed that development of a disease-course modification strategy toward early and effective risk factor management would be clinically significant in reducing the risk of metabolic disorder-initiated cognitive decline...
July 15, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28711517/prevention-of-type-2-diabetes-mellitus-in-polycystic-ovary-syndrome-a-review
#11
REVIEW
Safa Anwar, Nigar Shikalgar
Polycystic ovary syndrome (PCOS) is recognized as one of the most common endocrinopathies in women of reproductive age, associated with metabolic sequelae which includes increased risk factors for impaired glucose tolerance (IGT), type 2 diabetes mellitus (DM2) and cardiovascular disease (CVD). The adverse effects of DM2 affects a woman throughout her lifespan. Health care expenditure of DM2 highlights the need for prevention through appropriate screening, diagnosis and intervention. Lifestyle modification (LSM) programs that include diet and/or physical activity are suggested for patients characterized as prediabetic to delay the onset of adult DM2...
July 8, 2017: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/28708100/airborne-pm2-5-induced-hepatic-insulin-resistance-by-nrf2-jnk-mediated-signaling-pathway
#12
Jinxia Xu, Wei Zhang, Zhongbing Lu, Fang Zhang, Wenjun Ding
Animal and epidemiological studies have suggested that exposure to airborne particulate matter (PM) with an aerodynamic diameter less than 2.5 μm (PM2.5) is associated with the risk of developing type 2 diabetes. However, the mechanism underlying this risk is poorly understood. In the present study, we investigated the effects of PM2.5 exposure on glucose homeostasis and related signaling pathways in mice. Wild-type and nuclear factor erythroid 2-related factor 2 (Nrf2) knockout (Nrf2(-)(/)(-)) C57BL/6 male mice were exposed to either ambient concentrated PM2...
July 14, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28707353/increasing-ica512-autoantibody-titers-predict-development-of-abnormal-oral-glucose-tolerance-tests
#13
Srinath Sanda
OBJECTIVE: Determine if autoantibody titer magnitude and variability predict glucose abnormalities in subjects at risk for type 1 diabetes. RESEARCH DESIGNS AND METHODS: Demographic information, longitudinal autoantibody titers, and oral glucose tolerance test (OGTT) data were obtained from the TrialNet Pathway to Prevention study. Subjects (first and second degree relatives of individuals with type 1 diabetes) with at least 2 diabetes autoantibodies were selected for analysis...
July 14, 2017: Pediatric Diabetes
https://www.readbyqxmd.com/read/28706476/long-term-sex-dependent-vulnerability-to-metabolic-challenges-in-prenatally-stressed-rats
#14
Pamela Panetta, Alessandra Berry, Veronica Bellisario, Sara Capoccia, Carla Raggi, Alessia Luoni, Linda Longo, Marco A Riva, Francesca Cirulli
Prenatal stress (PNS) might affect the developmental programming of adult chronic diseases such as metabolic and mood disorders. The molecular mechanisms underlying such regulations may rely upon long-term changes in stress-responsive effectors such as Brain-Derived Neurotrophic Factor (BDNF) that can affect neuronal plasticity underlying mood disorders and may also play a role in metabolic regulation. Based upon previous data, we hypothesized that PNS might lead to greater vulnerability to an obesogenic challenge experienced at adulthood...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28705209/metabolic-characteristics-of-individuals-at-a-high-risk-of-type-2-diabetes-a-comparative-cross-sectional-study
#15
Josefin Henninger, Araz Rawshani, Ann Hammarstedt, Björn Eliasson
BACKGROUND: Type 2 diabetes (T2D) is associated with substantial morbidity and mortality. Individuals with a family history of T2D are at an increased risk of developing the disease. The aim of this study was to assess metabolic differences between first-degree relatives (FDR) of T2D patients and persons with no known family history of T2D (non-FDR). METHODS: In 200 FDR and 73 non-FDR, we compared anthropometrics, glucose tolerance status, different measurements of insulin secretion, insulin resistance, as well as blood lipids and other blood analyses...
July 14, 2017: BMC Endocrine Disorders
https://www.readbyqxmd.com/read/28704534/short-term-variation-in-ntprobnp-after-lifestyle-intervention-in-severe-obesity
#16
Debora Fedele, Virginia Bicchiega, Alessandro Collo, Federica Barutta, Erika Pistone, Gabriella Gruden, Graziella Bruno
AIM: Natriuretic peptides are not only involved in cardiovascular adaption to various conditions, but also in metabolic diseases. We performed this study to assess the effect of a very short time of lifestyle inpatient intervention on NTproBNP values in normotensive subjects with severe obesity and normal cardiac function. METHODS: We recruited 14 consecutive obese normotensive subjects with normal cardiac function who were aged 30 years and more and were referred to inpatient rehabilitation in an academic clinic over a two months period...
2017: PloS One
https://www.readbyqxmd.com/read/28703316/the-effect-of-renal-impairment-on-the-pharmacokinetics-and-pharmacodynamics-of-ertugliflozin-in-subjects-with-type-2-diabetes-mellitus
#17
V Sahasrabudhe, S G Terra, A Hickman, D Saur, H Shi, M O'Gorman, Z Zhou, D L Cutler
Ertugliflozin is a highly selective and potent inhibitor of the sodium-glucose cotransporter 2 in development for the treatment of type 2 diabetes mellitus. The glycemic efficacy of sodium-glucose cotransporter 2 inhibitors such as ertugliflozin depends on glucose filtration through the kidney. This phase 1, open-label study evaluated the effect of renal impairment on the pharmacokinetics, pharmacodynamics, and tolerability of ertugliflozin (15 mg) in type 2 diabetes mellitus and healthy subjects with normal renal function (estimated glomerular filtration rate not normalized for body surface area ≥90 mL/min) and type 2 diabetes mellitus subjects with mild (60-89 mL/min), moderate (30-59 mL/min), or severe (<30 mL/min) renal impairment (n = 36)...
July 13, 2017: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28702331/uncoupling-protein-2-regulates-daily-rhythms-of-insulin-secretion-capacity-in-min6-cells-and-isolated-islets-from-male-mice
#18
Nivedita Seshadri, Michael E Jonasson, Kristin L Hunt, Bo Xiang, Steven Cooper, Michael B Wheeler, Vernon W Dolinsky, Christine A Doucette
OBJECTIVE: Upregulation of uncoupling protein 2 (UCP2) is associated with impaired glucose-stimulated insulin secretion (GSIS), which is thought to be an important contributor to pathological β cell failure in obesity and type 2 diabetes (T2D); however, the physiological function of UCP2 in the β cell remains undefined. It has been suggested, but not yet tested, that UCP2 plays a physiological role in β cells by coordinating insulin secretion capacity with anticipated fluctuating nutrient supply, such that upregulation of UCP2 in the inactive/fasted state inhibits GSIS as a mechanism to prevent hypoglycemia...
July 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/28701993/no-impaired-glucose-tolerance-in-primary-insomnia-patients-with-normal-results-of-polysomnography
#19
Johanna Tschepp, Christoph J Lauer, Johanna Wilde-Frenz, Thomas Pollmächer
BACKGROUND: According to recent studies, sleep restriction and disruption both have a prominent negative influence on glucose metabolism. This could also be shown in sleep disorders, such as sleep apnea and the restless legs syndrome. However, similar studies regarding insomnia have not been that consistent, yet. Moreover, most previous studies did not include objective polysomnography (PSG) data. METHODS: Patients with primary insomnia (N = 17) and healthy controls (N = 15) were investigated using psychometric tests such as the Epworth Sleepiness Scale and the Pittsburgh sleep quality index (PSQI)...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28701081/gut-microbiota-dysbiosis-associated-with-glucose-metabolism-disorders-and-the-metabolic-syndrome-in-older-adults
#20
K Lippert, L Kedenko, L Antonielli, I Kedenko, C Gemeier, M Leitner, A Kautzky-Willer, B Paulweber, E Hackl
Obesity and associated metabolic disorders have become highly prevalent diseases worldwide, and the human gut microbiota, due to its influence on host energy metabolism, has been attributed an important role therein. This pilot study explores host-microbiota relationships in men and women affected by various types of glucose metabolism disorder. Among 20 individuals aged 58 to 71 years with either normal glucose tolerance, prediabetes, or type 2 diabetes mellitus the gut bacterial communities were compared based on barcoded 454 sequencing of 16S rRNA genes amplified from stool samples...
July 13, 2017: Beneficial Microbes
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