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https://www.readbyqxmd.com/read/28087818/three-hours-of-intermittent-hypoxia-increases-circulating-glucose-levels-in-healthy-adults
#1
Lauren P Newhouse, Michael J Joyner, Timothy B Curry, Marcello C Laurenti, Chiara Dalla Man, Claudio Cobelli, Adrian Vella, Jacqueline K Limberg
An independent association exists between sleep apnea and diabetes. Animal models suggest exposure to intermittent hypoxia, a consequence of sleep apnea, results in altered glucose metabolism and fasting hyperglycemia. However, it is unknown if acute exposure to intermittent hypoxia increases glucose concentrations in nondiabetic humans. We hypothesized plasma glucose would be increased from baseline following 3 h of intermittent hypoxia in healthy humans independent of any effect on insulin sensitivity. Eight (7M/1F, 21-34 years) healthy subjects completed two study visits randomized to 3 h of intermittent hypoxia or continuous normoxia, followed by an oral glucose tolerance test...
January 2017: Physiological Reports
https://www.readbyqxmd.com/read/28087555/associations-of-reallocating-sitting-time-into-standing-or-stepping-with-glucose-insulin-and-insulin-sensitivity-a-cross-sectional-analysis-of-adults-at-risk-of-type-2-diabetes
#2
Charlotte L Edwardson, Joe Henson, Danielle H Bodicoat, Kishan Bakrania, Kamlesh Khunti, Melanie J Davies, Thomas Yates
OBJECTIVE: To quantify associations between sitting time and glucose, insulin and insulin sensitivity by considering reallocation of time into standing or stepping. DESIGN: Cross-sectional. SETTING: Leicestershire, UK, 2013. PARTICIPANTS: Adults aged 30-75 years at high risk of impaired glucose regulation (IGR) or type 2 diabetes. 435 adults (age 66.8±7.4 years; 61.7% male; 89.2% white European) were included. METHODS: Participants wore an activPAL3 monitor 24 hours/day for 7 days to capture time spent sitting, standing and stepping...
January 13, 2017: BMJ Open
https://www.readbyqxmd.com/read/28086952/glucagon-like-peptide-1-analogues-an-efficient-therapeutic-option-for-the-severe-insulin-resistance-of-lipodystrophic-syndromes-two-case-reports
#3
Joana Oliveira, Eva Lau, Davide Carvalho, Paula Freitas
BACKGROUND: Lipodystrophic syndromes are uncommon medical conditions which are normally associated with metabolic disorders, such as diabetes mellitus, dyslipidemia, and fatty liver disease. These complications are generally difficult to treat, particularly diabetes, due to severe insulin resistance. We present two case reports of successful treatment of diabetes with glucagon-like peptide-1 analogues in patients with clinical features of lipodystrophic syndromes. CASE PRESENTATION: Two white women aged 49 and 60 years manifested marked central body fat deposition with severe lipoatrophy of their limbs and buttocks and pronounced acanthosis nigricans...
January 13, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28081146/maternal-nutrition-during-pregnancy-affects-testicular-and-bone-development-glucose-metabolism-and-response-to-overnutrition-in-weaned-horses-up-to-two-years
#4
Morgane Robles, Camille Gautier, Luis Mendoza, Pauline Peugnet, Cédric Dubois, Michèle Dahirel, Jean-Philippe Lejeune, Isabelle Caudron, Isabelle Guenon, Sylvaine Camous, Anne Tarrade, Laurence Wimel, Didier Serteyn, Hélène Bouraima-Lelong, Pascale Chavatte-Palmer
INTRODUCTION: Pregnant mares and post-weaning foals are often fed concentrates rich in soluble carbohydrates, together with forage. Recent studies suggest that the use of concentrates is linked to alterations of metabolism and the development of osteochondrosis in foals. The aim of this study was to determine if broodmare diet during gestation affects metabolism, osteoarticular status and growth of yearlings overfed from 20 to 24 months of age and/or sexual maturity in prepubertal colts...
2017: PloS One
https://www.readbyqxmd.com/read/28081144/digital-health-tracking-physiomes-and-activity-using-wearable-biosensors-reveals-useful-health-related-information
#5
Xiao Li, Jessilyn Dunn, Denis Salins, Gao Zhou, Wenyu Zhou, Sophia Miryam Schüssler-Fiorenza Rose, Dalia Perelman, Elizabeth Colbert, Ryan Runge, Shannon Rego, Ria Sonecha, Somalee Datta, Tracey McLaughlin, Michael P Snyder
A new wave of portable biosensors allows frequent measurement of health-related physiology. We investigated the use of these devices to monitor human physiological changes during various activities and their role in managing health and diagnosing and analyzing disease. By recording over 250,000 daily measurements for up to 43 individuals, we found personalized circadian differences in physiological parameters, replicating previous physiological findings. Interestingly, we found striking changes in particular environments, such as airline flights (decreased peripheral capillary oxygen saturation [SpO2] and increased radiation exposure)...
January 2017: PLoS Biology
https://www.readbyqxmd.com/read/28079384/hypoxia-and-h2o2-dual-sensitive-vesicles-for-enhanced-glucose-responsive-insulin-delivery
#6
Jicheng Yu, Chenggen Qian, Yuqi Zhang, Zheng Cui, Yong Zhu, Qundong Shen, Frances S Ligler, John B Buse, Zhen Gu
A glucose-responsive closed-loop insulin delivery system mimicking pancreas activity without long-term side effect has the potential to improve diabetic patients' health and quality of life. Here, we developed a novel glucose-responsive insulin delivery device using a painless microneedle-array patch containing insulin-loaded vesicles. Formed by self-assembly of hypoxia and H2O2 dual-sensitive diblock copolymer, the glucose-responsive polymersome-based vesicles (d-GRPs) can disassociate and subsequently release insulin triggered by H2O2 and hypoxia generated during glucose oxidation catalyzed by glucose specific enzyme...
January 12, 2017: Nano Letters
https://www.readbyqxmd.com/read/28078829/sensitivity-to-insulin-and-its-kinetics
#7
Jerry Radziuk
No abstract text is available yet for this article.
January 11, 2017: Obesity
https://www.readbyqxmd.com/read/28078385/glucose-and-fatty-acids-synergistically-and-reversibly-promote-beta-cell-proliferation-in-rats
#8
Valentine S Moullé, Kevin Vivot, Caroline Tremblay, Bader Zarrouki, Julien Ghislain, Vincent Poitout
AIMS/HYPOTHESIS: The mechanisms underlying pancreatic islet mass expansion have attracted considerable interest as potential therapeutic targets to prevent or delay the onset of type 2 diabetes. While several factors promoting beta cell proliferation have been identified, in the context of nutrient excess the roles of glucose or NEFA in relation to insulin resistance remain unclear. Here we tested the hypothesis that glucose and NEFA synergistically and reversibly promote beta cell proliferation in the context of nutrient-induced insulin resistance...
January 11, 2017: Diabetologia
https://www.readbyqxmd.com/read/28077105/the-prevalence-of-the-metabolic-syndrome-in-a-farm-worker-community-in-the-boland-district-south-africa
#9
Maritza J Kruger, Theo A Nell
BACKGROUND: In South Africa, not much is known about MetS in farm working communities. This study aimed to describe the prevalence of the MetS in a farm working population from the Boland winelands district of the Western Cape, South Africa. METHODS: A cross-sectional study was followed among farm workers (aged 20-60 years) from surrounding wine estates. The questionnaires used described socio-demographic status, ethnic background, alcohol consumption, smoking, exercise and daily medication...
January 11, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28076808/spatiotemporal-modeling-of-triggering-and-amplifying-pathways-in-glp-1-secreting-intestinal-l-cells
#10
Alessia Tagliavini, Morten Gram Pedersen
Glucagon-like peptide 1 (GLP-1) is secreted by intestinal L-cells, and augments glucose-induced insulin secretion, thus playing an important role in glucose control. The stimulus-secretion pathway in L-cells is still incompletely understood and a topic of debate. It is known that GLP-1 secreting cells can sense glucose to promote electrical activity either by the electrogenic sodium-glucose cotransporter SGLT1, or by closure of ATP-sensitive potassium channels after glucose metabolism. Glucose also has an effect on GLP-1 secretion downstream of electrical activity...
January 10, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28075451/the-role-of-sphingolipid-signalling-in-diabetes%C3%A2-associated-pathologies-review
#11
Mei Li Ng, Carol Wadham, Olga A Sukocheva
Sphingosine kinase (SphK) is an important signalling enzyme that catalyses the phosphorylation of sphingosine (Sph) to form sphingosine‑1‑phosphate (S1P). The multifunctional lipid, S1P binds to a family of five G protein-coupled receptors (GPCRs). As an intracellular second messenger, S1P activates key signalling cascades responsible for the maintenance of sphingolipid metabolism, and has been implicated in the progression of cancer, and the development of other inflammatory and metabolic diseases...
January 11, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28074635/physician-step-prescription-and-monitoring-to-improve-arterial-health-smarter-a-randomized-controlled-trial-in-type-2-diabetes-and-hypertension
#12
Kaberi Dasgupta, Ellen Rosenberg, Lawrence Joseph, Alexandra B Cooke, Luc Trudeau, Simon L Bacon, Deborah Chan, Mark Sherman, Rémi Rabasa-Lhoret, Stella S Daskalopoulou
AIMS: There are few strategies proven to enhance physical activity and cardiometabolic profiles in type 2 diabetes and hypertension. We examined the effects of physician-delivered step count prescriptions and monitoring. METHODS: Participants randomized to the active arm were provided with pedometers and recorded step counts. Over a 1-year period, their physicians reviewed their records and provided a written step count prescription at each clinic visit. The overall goal was a 3,000 step/day increase over 1-year (individualized rate of increase)...
January 11, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28074608/aged-garlic-extract-suppresses-the-increase-of-plasma-glycated-albumin-level-and-enhances-the-amp-activated-protein-kinase-in-adipose-tissue-in-tsod-mice
#13
Satomi Miki, Ken-Ichi Inokuma, Miyuki Takashima, Mitsuho Nishida, Yoko Sasaki, Mitsuyasu Ushijima, Jun-Ichiro Suzuki, Naoaki Morihara
SCOPE: In this study, we investigated the effect of aged garlic extract (AGE) on the high level of blood glucose in Tsumura Suzuki Obese-Diabetes (TSOD) mice. METHODS AND RESULTS: TSOD mice were fed standard diet with or without 2% AGE for 19 weeks. AGE treatment lowered the blood glucose level and significantly reduced the plasma level of glycated albumin in TSOD mice as compared with those without AGE treatment. In addition, AGE treatment increased the level of phosphorylated AMP-activated protein kinase (AMPK) in the adipose tissue, liver and muscle that played an important role in the maintenance of insulin sensitivity...
January 11, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28074253/c-abl-inhibition-mitigates-diet-induced-obesity-through-improving-insulin-sensitivity-of-subcutaneous-fat-in-mice
#14
Rong Wu, Jian-Guang Sun, Ji-Qiu Wang, Binhua Li, Qingsong Liu, Guang Ning, Wanzhu Jin, Zengqiang Yuan
AIMS/HYPOTHESIS: High-energy diets are among the main causes of the global epidemic of metabolic disorders, including obesity and type 2 diabetes. The mechanisms of high-energy-diet-induced metabolic disorders are complex and largely unknown. The non-receptor tyrosine kinase c-Abl plays an important role in adipogenesis in vitro but its role in vivo in the regulation of metabolism is still elusive. Hence, we sought to address the role of c-Abl in diet-induced obesity and obesity-associated insulin resistance...
January 10, 2017: Diabetologia
https://www.readbyqxmd.com/read/28073935/brain-structure-and-function-associated-with-younger-adults-in-growth-hormone-receptor-deficient-humans
#15
Kaoru Nashiro, Jaime Guevara-Aguirre, Meredith N Braskie, George W Hafzalla, Rico Velasco, Priya Balasubramian, Min Wei, Paul M Thompson, Mara Mather, Marvin D Nelson, Alexandra Guevara, Enrique Teran, Valter D Longo
: Growth hormone receptor deficiency (GHRD) results in short stature, enhanced insulin sensitivity, and low circulating levels of insulin and insulin-like growth factor 1 (IGF-1). Previous studies in mice and humans suggested that GHRD has protective effects against age-related diseases, including cancer and diabetes. Whereas GHRD mice show improved age-dependent cognitive performance, the effect of GHRD on human cognition remains unknown. Using magnetic resonance imaging (MRI), we compared brain structure, function, and connectivity between 13 people with GHRD and 12 unaffected relatives...
January 10, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28073830/adiponectin-deficiency-impairs-maternal-metabolic-adaptation-to-pregnancy-in-mice
#16
Liping Qiao, Jean-Sebastien Wattez, Samuel Lee, Amanda Nguyen, Jerome Schaack, William W Hay, Jianhua Shao
Hypoadiponectinemia has been widely observed in patients with gestational diabetes. To investigate the causal role of hypoadiponectinemia in gestational diabetes, adiponectin gene knockout (Adipoq(-/-)) and wild-type (WT) mice were crossed to produce pregnant mouse models with or without adiponectin deficiency. Adenoviral vector-mediated in vivo transduction was used to reconstitute adiponectin during late pregnancy. Results showed that Adipoq(-/-) dams developed glucose intolerance and hyperlipidemia in late pregnancy...
January 10, 2017: Diabetes
https://www.readbyqxmd.com/read/28073780/chronic-kidney-disease-and-obesity-bias-surrogate-estimates-of-insulin-sensitivity-compared-to-the-hyperinsulinemic-euglycemic-clamp
#17
Iram Ahmad, Leila R Zelnick, Nicole R Robinson, Adriana M Hung, Bryan Kestenbaum, Kristina M Utzschneider, Steven E Kahn, Ian H de Boer
INTRODUCTION: Insulin sensitivity can be measured by procedures such as the hyperinsulinemic-euglycemic clamp or using surrogate indices. Chronic kidney disease (CKD) and obesity may differentially affect these measurements because of changes in insulin kinetics and organ-specific effects on insulin sensitivity. METHODS: In a cross-sectional study of 59 subjects with non-diabetic CKD (estimated glomerular filtration rate (GFR) <60 mL/min/1.73 m(2)) and 39 matched healthy controls, we quantified insulin sensitivity by clamp (SIclamp), oral glucose tolerance test, and fasting glucose and insulin...
January 10, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28073685/obesity-is-the-main-determinant-of-insulin-resistance-more-than-the-circulating-pro-inflammatory-cytokines-levels-in-rheumatoid-arthritis-patients
#18
Jesus Castillo-Hernandez, Martha Imelda Maldonado-Cervantes, Juan Pablo Reyes, Nuria Patiño-Marin, Enrique Maldonado-Cervantes, Claudia Solorzano-Rodriguez, Esperanza de la Cruz Mendoza, Brenda Alvarado-Sanchez
BACKGROUND: Systemic blockade of TNF-α in Rheumatoid arthritis (RA) with insulin resistance (IR) seems to produce more improvement in insulin sensitivity in normal weight patients with RA than in obese patients with RA, suggesting that systemic-inflammation and obesity are independent risk factors for IR in RA patients. OBJECTIVES: To evaluate the insulin resistance in: normal weight patients with RA (RA NW), overweight patients with RA (RA OW), obese RA patients (RA OB), and matched control subjects with normal weight (NW) and obesity (OB); and its association with major cytokines involved in the pathogenesis of the disease...
December 20, 2016: Revista Brasileira de Reumatologia
https://www.readbyqxmd.com/read/28073130/testosterone-plasma-concentration-is-associated-with-insulin-resistance-in-male-hypertensive-patients
#19
Gian Piero Carnevale Schianca, Gian Paolo Fra, Fabio Brustia, Mattia Bellan, Alice Pirovano, Alessandro Gualerzi, Michela Gentile, Antonello Gibbin, Mirta Menegatti, Ettore Bartoli, Mario Pirisi
Background: Low testosterone levels are a common finding among men with Type 2 Diabetes Mellitus (T2DM) and are inversely related to insulin resistance. Whether this relationship holds true in patients with hypertension, but normal glucose tolerance or prediabetes, is unclear. Methods: We recruited 87 male outpatients with essential arterial hypertension, aged 35-70 years. Anthropometric data were collected, an Oral Glucose Tolerance Test (OGTT) performed, and the homeostasis model assessment of insulin resistance (HOMA-IR) score calculated...
January 10, 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/28073129/alternative-treatment-strategies-in-women-poorly-tolerating-moderate-doses-of-bromocriptine
#20
Robert Krysiak, Witold Szkróbka, Bogusław Okopień
Background: Metformin as well as dopaminergic agents exert a beneficial effect on glucose and lipid metabolism, often impaired in patients with hyperprolactinemia. Objective: The aim of this study was to compare metabolic- and prolactin-lowering effects of low-dose bromocriptine/metformin combination therapy and cabergoline in patients with elevated prolactin levels. Methods: The study included 27 women with hyperprolactinemia and impaired glucose tolerance who were treated with moderate doses of bromocriptine but experienced adverse effects of this treatment...
January 10, 2017: Experimental and Clinical Endocrinology & Diabetes
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