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Dodanim Talavera-Adame, Orison O Woolcott, Joseph Ignatius-Irudayam, Vaithilingaraja Arumugaswami, David H Geller, Donald C Dafoe
No abstract text is available yet for this article.
October 17, 2016: Diabetologia
Antonius Baartscheer, Cees A Schumacher, Rob C I Wüst, Jan W T Fiolet, Ger J M Stienen, Ruben Coronel, Coert J Zuurbier
AIMS/HYPOTHESIS: Empagliflozin (EMPA), an inhibitor of the renal sodium-glucose cotransporter (SGLT) 2, reduces the risk of cardiovascular death in patients with type 2 diabetes. The underlying mechanism of this effect is unknown. Elevated cardiac cytoplasmic Na(+) ([Na(+)]c) and Ca(2+) ([Ca(2+)]c) concentrations and decreased mitochondrial Ca(2+) concentration ([Ca(2+)]m) are drivers of heart failure and cardiac death. We therefore hypothesised that EMPA would directly modify [Na(+)]c, [Ca(2+)]c and [Ca(2+)]m in cardiomyocytes...
October 17, 2016: Diabetologia
Andrea D Smith, Alessio Crippa, James Woodcock, Søren Brage
AIMS/HYPOTHESIS: Inverse associations between physical activity (PA) and type 2 diabetes mellitus are well known. However, the shape of the dose-response relationship is still uncertain. This review synthesises results from longitudinal studies in general populations and uses non-linear models of the association between PA and incident type 2 diabetes. METHODS: A systematic literature search identified 28 prospective studies on leisure-time PA (LTPA) or total PA and risk of type 2 diabetes...
October 17, 2016: Diabetologia
Andrew N Reynolds, Jim I Mann, Sheila Williams, Bernard J Venn
AIMS/HYPOTHESIS: Regular physical activity is a cornerstone of diabetes management. We conducted a study to evaluate whether specifying the timing of walking in relation to meals enhances the benefits conferred by current physical activity guidelines. METHODS: A total of 41 adults with type 2 diabetes mellitus (mean ± SD age 60 ± 9.9 years; mean diabetes duration 10 years) participated in this randomised, crossover study. Randomisation was by a computer-generated protocol...
October 17, 2016: Diabetologia
Joana F Sacramento, Maria J Ribeiro, Tiago Rodrigues, Elena Olea, Bernardete F Melo, Maria P Guarino, Rui Fonseca-Pinto, Cristiana R Ferreira, Joana Coelho, Ana Obeso, Raquel Seiça, Paulo Matafome, Sílvia V Conde
AIMS/HYPOTHESIS: We recently described that carotid body (CB) over-activation is involved in the aetiology of insulin resistance and arterial hypertension in animal models of the metabolic syndrome. Additionally, we have demonstrated that CB activity is increased in animal models of insulin resistance, and that carotid sinus nerve (CSN) resection prevents the development of insulin resistance and arterial hypertension induced by high-energy diets. Here, we tested whether the functional abolition of CB by CSN transection would reverse pre-established insulin resistance, dyslipidaemia, obesity, autonomic dysfunction and hypertension in animal models of the metabolic syndrome...
October 16, 2016: Diabetologia
Chloe Y Y Cheung, Clara S Tang, Aimin Xu, Chi-Ho Lee, Ka-Wing Au, Lin Xu, Carol H Y Fong, Kelvin H M Kwok, Wing-Sun Chow, Yu-Cho Woo, Michele M A Yuen, JoJo S H Hai, Ya-Li Jin, Bernard M Y Cheung, Kathryn C B Tan, Stacey S Cherny, Feng Zhu, Tong Zhu, G Neil Thomas, Kar-Keung Cheng, Chao-Qiang Jiang, Tai-Hing Lam, Hung-Fat Tse, Pak-Chung Sham, Karen S L Lam
AIMS/HYPOTHESIS: Genome-wide association studies (GWASs) have identified many common type 2 diabetes-associated variants, mostly at the intronic or intergenic regions. Recent advancements of exome-array genotyping platforms have opened up a novel means for detecting the associations of low-frequency or rare coding variants with type 2 diabetes. We conducted an exomechip association analysis to identify additional type 2 diabetes susceptibility variants in the Chinese population. METHODS: An exome-chip association study was conducted by genotyping 5640 Chinese individuals from Hong Kong, using a custom designed exome array, the Asian Exomechip...
October 15, 2016: Diabetologia
Troy L Merry, Melanie Tran, Garron T Dodd, Salvatore P Mangiafico, Florian Wiede, Supreet Kaur, Catriona L McLean, Sofianos Andrikopoulos, Tony Tiganis
No abstract text is available yet for this article.
October 14, 2016: Diabetologia
Mayer B Davidson
No abstract text is available yet for this article.
October 14, 2016: Diabetologia
Thomas S Voss, Mikkel H Vendelbo, Ulla Kampmann, Steen B Pedersen, Thomas S Nielsen, Mogens Johannsen, Mads V Svart, Niels Jessen, Niels Møller
AIMS/HYPOTHESIS: The aims of this study were to determine the role of lipolysis in hypoglycaemia and define the underlying intracellular mechanisms. METHODS: Nine healthy volunteers were randomised to treatment order of three different treatments (crossover design). Treatments were: (1) saline control; (2) hyperinsulinaemic hypoglycaemia (HH; i.v. bolus of 0.1 U/kg insulin); and (3) hyperinsulinaemic euglycaemia (HE; i.v. bolus of 0.1 U/kg insulin and 20% glucose)...
October 12, 2016: Diabetologia
Sini Heinonen, Maheswary Muniandy, Jana Buzkova, Adil Mardinoglu, Amaia Rodríguez, Gema Frühbeck, Antti Hakkarainen, Jesper Lundbom, Nina Lundbom, Jaakko Kaprio, Aila Rissanen, Kirsi H Pietiläinen
AIMS/HYPOTHESIS: Low mitochondrial activity in adipose tissue is suggested to be an underlying factor in obesity and its metabolic complications. We aimed to find out whether mitochondrial measures are downregulated in obesity also in isolated adipocytes. METHODS: We studied young adult monozygotic (MZ) twin pairs discordant (n = 14, intrapair difference ΔBMI ≥ 3 kg/m(2)) and concordant (n = 5, ΔBMI < 3 kg/m(2)) for BMI, identified from ten birth cohorts of 22- to 36-year-old Finnish twins...
October 12, 2016: Diabetologia
Leif Groop
No abstract text is available yet for this article.
October 8, 2016: Diabetologia
Konstantina Dipla, Areti Triantafyllou, Iris Grigoriadou, Evangelia Kintiraki, Georgios A Triantafyllou, Pavlos Poulios, Ioannis S Vrabas, Andreas Zafeiridis, Stella Douma, Dimitrios G Goulis
AIMS/HYPOTHESIS: Gestational diabetes mellitus (GDM) is a risk factor for the development of endothelial dysfunction and cardiovascular disease. However, in vivo microvascular endothelial function in GDM has not been investigated. This study aimed to examine, using near-infrared spectroscopy (NIRS), whether: (1) there are differences in microvascular reactivity and skeletal muscle oxygen consumption (m[Formula: see text]) at rest and during exercise between GDM and uncomplicated pregnancies; and (2) there is an association of NIRS indices with macrovascular function and cardiovascular disease risk factors...
October 8, 2016: Diabetologia
Wendy A Davis, Renate R Zilkens, Sergio E Starkstein, Timothy M E Davis, David G Bruce
AIMS/HYPOTHESIS: The study aimed to assess the incidence, age of onset, survival and relative hazard of dementia in well-categorised community-based patients with type 2 diabetes compared with a matched cohort of individuals without diabetes. METHODS: A longitudinal observational study was undertaken involving 1291 participants with type 2 diabetes from the Fremantle Diabetes Study and 5159 matched residents without documented diabetes. Linkage with health-related databases was used to detect incident dementia...
October 7, 2016: Diabetologia
Kai Sun, Jiyoung Park, Min Kim, Philipp E Scherer
Endotrophin is a cleavage product derived from the collagen VI(α3) chain. Collagen VI is expressed in a number of different tissues, but adipose tissue is a particularly prominent source for this extracellular matrix constituent. Mice lacking collagen VI are metabolically healthier due to reduced fibrosis in adipose tissue. Endotrophin seems to be one of the key players of collagen VI-mediated signalling effects, including its pro-fibrotic nature and chemoattractant properties for macrophages, while also playing an important role in cancer progression and the chemoresistance of tumour cells...
October 7, 2016: Diabetologia
Jerzy Adamski
Metabolomics is instrumental in the analysis of disease mechanisms and biomarkers of disease. The human metabolome is influenced by genetics and environmental interactions and reveals characteristic signatures of disease. Population studies with metabolomics require special study designs and care needs to be taken with pre-analytics. Gas chromatography coupled to mass spectrometry, liquid chromatography coupled to mass spectrometry or NMR are popular techniques used for metabolomic analyses in human cohorts...
October 6, 2016: Diabetologia
Nadine Taleb, Ali Emami, Corinne Suppere, Virginie Messier, Laurent Legault, Martin Ladouceur, Jean-Louis Chiasson, Ahmad Haidar, Rémi Rabasa-Lhoret
AIMS/HYPOTHESIS: The aim of this study was to assess whether the dual-hormone (insulin and glucagon) artificial pancreas reduces hypoglycaemia compared with the single-hormone (insulin alone) artificial pancreas during two types of exercise. METHODS: An open-label randomised crossover study comparing both systems in 17 adults with type 1 diabetes (age, 37.2 ± 13.6 years; HbA1c, 8.0 ± 1.0% [63.9 ± 10.2 mmol/mol]) during two exercise types on an ergocycle and matched for energy expenditure: continuous (60% [Formula: see text] for 60 min) and interval (2 min alternating periods at 85% and 50% [Formula: see text] for 40 min, with two 10 min periods at 45% [Formula: see text] at the start and end of the session)...
October 4, 2016: Diabetologia
Craig A Beam, Colleen MacCallum, Kevan C Herold, Diane K Wherrett, Jerry Palmer, Johnny Ludvigsson
AIMS/HYPOTHESIS: GAD is a major target of the autoimmune response that occurs in type 1 diabetes mellitus. Randomised controlled clinical trials of a GAD + alum vaccine in human participants have so far given conflicting results. METHODS: In this study, we sought to see whether a clearer answer to the question of whether GAD65 has an effect on C-peptide could be reached by combining individual-level data from the randomised controlled trials using Bayesian meta-analysis to estimate the probability of a positive biological effect (a reduction in C-peptide loss compared with placebo approximately 1 year after the GAD vaccine)...
October 4, 2016: Diabetologia
Nadine Reichhart, Sergio Crespo-Garcia, Nadine Haase, Michaela Golic, Sergej Skosyrski, Anne Rübsam, Christina Herrspiegel, Norbert Kociok, Natalia Alenina, Michael Bader, Ralf Dechend, Olaf Strauss, Antonia M Joussen
AIMS/HYPOTHESIS: Although the renin-angiotensin system plays an important role in the progression of diabetic retinopathy, its influence therein has not been systematically evaluated. Here we test the suitability of a new translational model of diabetic retinopathy, the TetO rat, for addressing the role of angiotensin-II receptor 1 (AT1) blockade in experimental diabetic retinopathy. METHODS: Diabetes was induced by tetracycline-inducible small hairpin RNA (shRNA) knockdown of the insulin receptor in rats, generating TetO rats...
October 4, 2016: Diabetologia
João Paulo M C M Cunha, Gunter Leuckx, Peter Sterkendries, Hannelie Korf, Gabriela Bomfim-Ferreira, Lutgart Overbergh, Bart Vaes, Harry Heimberg, Conny Gysemans, Chantal Mathieu
AIMS/HYPOTHESIS: Hypoxia in the initial days after islet transplantation leads to considerable loss of islet mass and contributes to disappointing outcomes in the clinical setting. The aim of the present study was to investigate whether co-transplantation of human non-endothelial bone marrow-derived multipotent adult progenitor cells (MAPCs), which are non-immunogenic and can secrete angiogenic growth factors during the initial days after implantation, could improve islet engraftment and survival...
October 4, 2016: Diabetologia
Joel T Haas, Bart Staels
Oxidative stress has long been considered a key driving factor of many obesity-related health problems. However, recent work by Merry, Tran et al (Diabetologia DOI 10.1007/s00125-016-4084-3 ) challenges this idea with an interesting study using a hepatocyte-specific Gpx1-knockout (HGKO) mouse. GPX1 is an important detoxification enzyme that converts H2O2 to water. The authors found that high-fat diet-fed HGKO mice were more insulin sensitive than wildtype controls, despite elevated hepatic levels of H2O2 and evidence of increased systemic oxidative stress...
October 1, 2016: Diabetologia
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