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Esra Özdil Demiryürek, Atilla Tekin, Engin Çakmak, Osman Temizkan, Oğuz Karamustafalıoğlu, Sibel Gökova, Enes Demiryürek
OBJECTIVE: The aim of this study was to investigate the relationship between anger, impulsiveness, and biochemical parameters (testosterone, insulin, insulin resistance) in women with polycystic ovary syndrome. STUDY DESIGN: We recruited 84 women diagnosed with polycystic ovary syndrome according to the Rotterdam diagnostic criteria. Psychiatric interviews were performed using the Structured Clinical Interview for DSM-IV Axis I Disorders. The Barratt Impulsiveness Scale and the State Trait Anger Expression Inventory were also administered to each participant...
October 6, 2016: European Journal of Obstetrics, Gynecology, and Reproductive Biology
K S Weber, K Strassburger, G Pacini, B Nowotny, K Müssig, J Szendroedi, C Herder, M Roden
AIMS: To examine the hypothesis that changes in serum adiponectin concentration inversely relate to changes in glucose tolerance and β-cell function already during the early stage of disease progression in recently diagnosed Type 1 and Type 2 diabetes mellitus. METHODS: Participants in the prospective observational German Diabetes Study (Type 2 diabetes, n = 94; Type 1 diabetes, n =42) underwent i.v. glucose tolerance and glucagon stimulation testing to assess pre-hepatic β-cell function, glucose tolerance index and C-peptide secretion within the first year of diabetes diagnosis and 2 years later...
October 22, 2016: Diabetic Medicine: a Journal of the British Diabetic Association
Rory J McCrimmon
Despite the introduction of newer technologies and improved insulin formulations, recurrent hypoglycaemia continues to affect the lives of many people with Type 1 and Type 2 diabetes. Developing strategies or therapies designed to prevent or minimize hypoglycaemia risk is of utmost importance to help individuals safely achieve glycaemic targets. Novel, educational or behavioural approaches need to be based on a clear understanding of the mechanisms underpinning both the detection of hypoglycaemia and why repeated exposure to hypoglycaemia leads to the development of a clinical syndrome referred to as impaired awareness of hypoglycaemia...
October 22, 2016: Diabetic Medicine: a Journal of the British Diabetic Association
Alice H Suroviec
The use of enzymatically modified electrodes for the detection of glucose or other non-electrochemically active analytes is becoming increasingly common. Direct heterogeneous electron transfer to glucose oxidase has been shown to be kinetically difficult, which is why electron transfer mediators or indirect detection is usually used for monitoring glucose with electrochemical sensors. It has been found, however, that electrodes modified with single or multi-walled carbon nanotubes (CNTs) demonstrate fast heterogeneous electron transfer kinetics as compared to that found for traditional electrodes...
2017: Methods in Molecular Biology
David P Hickey
Enzymatic glucose biosensors and biofuel cells make use of the electrochemical transduction between an oxidoreductase enzyme, such as glucose oxidase (GOx), and an electrode to either quantify the amount of glucose in a solution or generate electrical energy. However, many enzymes including GOx are not able to electrochemically interact with an electrode surface directly, but require an external electrochemical relay to shuttle electrons to the electrode. Ferrocene-modified linear poly(ethylenimine) (Fc-LPEI) redox polymers have been designed to simultaneously immobilize glucose oxidase (GOx) at an electrode and mediate electron transfer from their flavin adenine dinucleotide (FAD) active site to the electrode surface...
2017: Methods in Molecular Biology
Gaige R VandeZande, Jasmine M Olvany, Julia L Rutherford, Michelle Rasmussen
Enzymatic electrodes are becoming increasingly common for energy production and sensing applications. Research over the past several decades has addressed a major issue that can occur when using these biocatalysts, i.e., slow heterogeneous electron transfer, by incorporation of a redox active species to act as an electron shuttle. There are several advantages to immobilizing both the enzyme and mediator at the enzyme surface, including increased electron transfer rates, decreased enzyme leaching, and minimized diffusion limitations...
2017: Methods in Molecular Biology
Motahare Soufi, Alireza Kamali-Asl, Parham Geramifar, Arman Rahmim
PURPOSE: Determination of intra-tumor high-uptake area using 2-deoxy-2-[(18)F]fluoro-D-glucose ([(18)F]FDG) positron emission tomography (PET) imaging is an important consideration for dose painting in radiation treatment applications. The aim of our study was to develop a framework towards automated segmentation and labeling of homogeneous vs. heterogeneous tumors in clinical lung [(18)F]FDG-PET with the capability of intra-tumor high-uptake region delineation. PROCEDURES: We utilized and extended a fuzzy random walk PET tumor segmentation algorithm to delineate intra-tumor high-uptake areas...
October 21, 2016: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
Lijuan Sun, Kevin Wei Jie Tan, Joseph Zhien Lim, Faidon Magkos, Christiani Jeyakumar Henry
PURPOSE: The magnitude of postprandial lipemia is influenced not only by the amount but also the type of fat and carbohydrate consumed. The aim of this study was to evaluate differences in postprandial glucose and lipid responses after a mixed meal containing low- or high-glycemic-index (GI) carbohydrate and three different types of fat varying in the degree of saturation in healthy subjects. METHODS: A randomized, controlled, single-blinded crossover study was conducted in 20 healthy Chinese men...
October 21, 2016: European Journal of Nutrition
Amirabbas Azizi, Robab Aboutorabi, Zahra Mazloum-Khorasani, Monavar Afzal-Aghaea, Hamed Tabesh, Mahmood Tara
BACKGROUND: There are 4 main types of chronic or noncommunicable diseases. Of these, diabetes is one of the major therapeutic concerns globally. Moreover, Iran is among the countries with the highest incidence of diabetic patients. Furthermore, library-based studies by researchers have shown that thus far no study has been carried out to evaluate the relationship between Web-based diabetic personal health records (DPHR) and self-care indicators in Iran. OBJECTIVE: The objective of this study is to examine the effect of Web-based DPHR on self-care status of diabetic patients in an intervention group as compared with a control group...
October 21, 2016: JMIR Medical Informatics
Ting Hu, Qilin Huang, Kahing Wong, Hong Yang
Four polysaccharide fractions, LRP-1, LRP-2, LRP-3 and LRP-4 were extracted stepwise from Lignosus rhinocerotis sclerotia with distilled water at 25, 95, 120°C and 1.0M NaOH solution at 4°C. Their structure, molecular size and chain conformation were clarified using SEC-MALLS-RI, GC, FT-IR and UV-VIS. Furthermore, their immunomodulatory activities were evaluated by the model of cyclophosphamide (Cy)-induced immunosuppression. The LRP-1 and LRP-2 were polysaccharide-protein complexes (46-68% β-D-glucan and 27-48% protein), while LRP-3 and LRP-4 were absolutely composed of β-D-glucose...
October 18, 2016: International Journal of Biological Macromolecules
Yoon Young Choi, Suji Kim, Jung-Hwa Han, Dae-Hwan Nam, Kwon Moo Park, Seong Yong Kim, Chang-Hoon Woo
Epidemiological studies suggested that diabetic patients are susceptible to develop cardiovascular complications along with having endothelial dysfunction. It has been suggested that methylglyoxal (MGO), a glycolytic metabolite, has more detrimental effects on endothelial dysfunction rather than glucose itself. Here, we investigated the molecular mechanism by which MGO induces endothelial dysfunction via the regulation of ER stress. Biochemical data showed that 4-PBA significantly inhibited MGO-induced protein cleavages of PARP-1 and caspase-3...
October 18, 2016: Biochemical and Biophysical Research Communications
Emilie Hein Zobel, Bernt Johan von Scholten, Morten Lindhardt, Frederik Persson, Tine Willum Hansen, Peter Rossing
AIMS/HYPOTHESIS: Management of diabetic nephropathy includes reduction of albuminuria, blood pressure and weight. The GLP-1 receptor agonist liraglutide may possess these pleiotropic effects in addition to the glucose lowering effect. We aimed to elucidate the individual liraglutide treatment response by determining if high responders (highest reduction) in each risk factor also had high response in other renal risk factors (cross-dependency). METHODS: Open-label study: 31 type 2 diabetics treated with liraglutide for 7weeks...
September 30, 2016: Journal of Diabetes and its Complications
Ra-Yeong Choi, Ju Ri Ham, Mi-Kyung Lee
This study investigated the effects and mechanism of esculetin (6,7-dihydroxycoumarin) on non-alcoholic fatty liver in diabetic mice fed high-fat diet (HFD). The diabetic mice model was induced by injection of streptozotocin, after which they were fed HFD diet with or without esculetin for 11 weeks. Non-diabetic mice were provided a normal diet. Diabetes induced hepatic hypertrophy, lipid accumulation and droplets; however, esculetin reversed these changes. Esculetin treatment in diabetic mice fed HFD significantly down-regulated expression of lipid synthesis genes (Fasn, Dgat2 and Pap) and inflammation genes (Tlr4, Myd88, Nfkb, Tnfα and Il6)...
October 18, 2016: Chemico-biological Interactions
Silvana B Sandbakk, Javaid Nauman, Nina Zisko, Øyvind Sandbakk, Nils Petter Aspvik, Dorthe Stensvold, Ulrik Wisløff
OBJECTIVE: To determine whether meeting physical activity (PA) recommendations and/or having high age-specific cardiorespiratory fitness (CRF) attenuate the adverse effect of prolonged sedentary time on cardiovascular risk factor (CV-RF) clustering in older adults. PATIENTS AND METHODS: We conducted a cross-sectional study of Norwegian women (495) and men (379) aged 70 to 77 years from August 22, 2012, through June 30, 2013. Sedentary time and PA were assessed by accelerometers and CRF by directly measured peak oxygen uptake (VO2peak)...
October 8, 2016: Mayo Clinic Proceedings
Xiangheng Niu, Jianming Pan, Fengxian Qiu, Xin Li, Yongsheng Yan, Libo Shi, Hongli Zhao, Minbo Lan
Enzyme-free electrochemical detection of glucose in alkaline media with favorable properties has been acquired by fabricating a robust and large-surface sensing platform, which is composed of anneal-shrinked Cu2O dendrites grown on porous Cu foam. On the one hand, the good compatibility of electrodeposited Cu2O architectures and Cu foam substrate, together with a post-deposition anneal at 200°C, offers a mechanically stable interface for glucose determination. On the other hand, the macropores of Cu foam that is decorated with unique Cu2O dendrites provide large active surface for electrocatalytic reaction and mass transport...
December 1, 2016: Talanta
Lanfang Tian, Siyuan Chen, Haiyan Liu, Mingzhang Guo, Wentao Xu, Xiaoyun He, Yunbo Luo, Xiaozhe Qi, Hongxia Luo, Kunlun Huang
Hepcidin, one kind of antimicrobial peptides, is one of the promising alternatives to antibiotics with broad spectrum of antimicrobial activity. Hepcidins cloned from different kinds of fishes have been produced using exogenous expression systems, and their in vitro antimicrobial effects have been verified. However their in vivo effects on gut microbiota and gut health of hosts remain unclear. Here we performed a safety study of hepcidin so that it can be used to reduce microbial contaminations in the food and feed...
2016: PloS One
Michael Chalick, Oded Jacobi, Edward Pichinuk, Christian Garbar, Armand Bensussan, Alan Meeker, Ravit Ziv, Tania Zehavi, Nechama I Smorodinsky, John Hilkens, Franz-Georg Hanisch, Daniel B Rubinstein, Daniel H Wreschner
Translation of mRNA in alternate reading frames (ARF) is a naturally occurring process heretofore underappreciated as a generator of protein diversity. The MUC1 gene encodes MUC1-TM, a signal-transducing trans-membrane protein highly expressed in human malignancies. Here we show that an AUG codon downstream to the MUC1-TM initiation codon initiates an alternate reading frame thereby generating a novel protein, MUC1-ARF. MUC1-ARF, like its MUC1-TM 'parent' protein, contains a tandem repeat (VNTR) domain. However, the amino acid sequence of the MUC1-ARF tandem repeat as well as N- and C- sequences flanking it differ entirely from those of MUC1-TM...
2016: PloS One
Tamer M S Salama, Karim Sabry, Yaser El Ghamrini
PURPOSE: Single anastomosis sleeve ileal bypass (SASI) procedure appears as a new metabolic and bariatric surgery based on Santoro's operation, in which a sleeve gastrectomy is followed by a side-to-side gastroileal anastomosis. The study is aimed to evaluate the short-term outcomes of laparoscopic single anastomosis sleeve ileal bypass with respect to postoperative weight loss and metabolic and nutritional effects on patients. METHODS: Forty-five morbidly obese patients with a mean age of 31...
October 21, 2016: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
Daniel J Peart, Andy Hensby, Matthew P Shaw
The purpose of this study was to compare markers of hydration during sub-maximal exercise and subsequent time trial performance when consuming water (PW) or coconut water (CW). There was also a secondary aim to assess the palatability of CW during exercise and voluntary intake during intense exercise. 10 males (age 27.9 + 4.9 years, body mass 78.1 + 10.1kg, average max minute power 300.2 + 28.2W) completed 60-min of sub-maximal cycling followed by a 10-km time trial on two occasions. During these trials participants consumed either PW or CW in a randomised manner, drinking a 250 ml of the assigned drink between 10-15 min, 25-30 min and 40-45 min, and then drinking ad libitum from 55-min until the end of the time trial...
October 21, 2016: International Journal of Sport Nutrition and Exercise Metabolism
Yuji Kaneko, Colleen Pappas, Naoki Tajiri, Cesar V Borlongan
Oxytocin protects against ischemia-induced inflammation and oxidative stress, and is associated with GABA (γ-aminobutyric acid, an inhibitory neurotransmitter) signaling transduction in neurons. However, the molecular mechanism by which oxytocin affords neuroprotection, especially the interaction between oxytocin receptor and GABAA receptor (GABAAR), remains to be elucidated. Primary rat neural cells were exposed to oxytocin before induction of experimental acute stroke model via oxygen-glucose deprivation-reperfusion (OGD/R) injury...
October 21, 2016: Scientific Reports
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