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https://www.readbyqxmd.com/read/29024607/development-of-an-automatic-puncturing-and-sampling-system-for-a-self-monitoring-blood-glucose-device
#1
Mari Abe-Doi, Makoto Oe, Ryoko Murayama, Mami Takahashi, Yasunobu Zushi, Hidenori Tanabe, Iseki Takamoto, Ryo Suzuki, Toshimasa Yamauchi, Takashi Kadowaki, Chieko Komiyama, Hiromi Sanada
BACKGROUND: Performing self-monitoring of blood glucose (SMBG) is a clinical challenge for elderly people with low dexterity. An all-in-one-type SMBG device that can simply and easily puncture and monitor would be useful for them. We developed an automatic skin-puncturing and blood-sampling (APS) system for introducing of an all-in-one-type SMBG device. The aims of this study were to determine if the developed APS system, which has automatic puncturing, squeezing, and application functions, could provide sufficient blood sample volumes for SMBG and to determine the factors associated with failure in the use of the system by adult volunteers...
October 12, 2017: Diabetes Technology & Therapeutics
https://www.readbyqxmd.com/read/29023410/long-term-osmotic-mini-pump-treatment-with-alpha-msh-improves-myocardial-function-in-zucker-diabetic-fatty-rats
#2
Miklos Szokol, Daniel Priksz, Mariann Bombicz, Balazs Varga, Arpad Kovacs, Gabor Aron Fulop, Tamas Csipo, Aniko Posa, Attila Toth, Zoltan Papp, Zoltan Szilvassy, Bela Juhasz
The present investigation evaluates the cardiovascular effects of the anorexigenic mediator alpha-melanocyte stimulating hormone (MSH), in a rat model of type 2 diabetes. Osmotic mini pumps delivering MSH or vehicle, for 6 weeks, were surgically implanted in Zucker Diabetic Fatty (ZDF) rats. Serum parameters, blood pressure, and weight gain were monitored along with oral glucose tolerance (OGTT). Echocardiography was conducted and, following sacrifice, the effects of treatment on ischemia/reperfusion cardiac injury were assessed using the isolated working heart method...
October 12, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29021368/spontaneous-pmn-apoptosis-in-type-2-diabetes-and-the-impact-of-periodontitis
#3
Aggasit Manosudprasit, Alpdogan Kantarci, Hatice Hasturk, Danielle Stephens, Thomas E Van Dyke
The purpose of this study was to test the hypothesis that peripheral blood neutrophils (PMN) exhibit delayed spontaneous apoptosis in individuals with diabetes mellitus type 2 (T2DM) and that the delay is exacerbated further among people who coexpress chronic periodontitis (CP). Seventy-three individuals were enrolled, including those with T2DM (n = 16), CP (n = 15), T2DM + CP (n = 21), and healthy volunteers (n = 21). PMN apoptosis was determined by flow cytometry using TUNEL and Annexin V assays. The activity of caspase-3, -8, and -9 was measured by colorimetric assay...
October 11, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28993322/comparative-study-of-expression-and-activity-of-glucose-transporters-between-stem-cell-derived-brain-microvascular-endothelial-cells-and-hcmec-d3-cells
#4
COMPARATIVE STUDY
Abraham J Al-Ahmad
Glucose constitutes a major source of energy of mammalian brains. Glucose uptake at the blood-brain barrier (BBB) occurs through a facilitated glucose transport, through glucose transporter 1 (GLUT1), although other isoforms have been described at the BBB. Mutations in GLUT1 are associated with the GLUT1 deficiency syndrome, yet none of the current in vitro models of the human BBB maybe suited for modeling such a disorder. In this study, we investigated the expression of glucose transporters and glucose diffusion across brain microvascular endothelial cells (BMECs) derived from healthy patient-derived induced pluripotent stem cells (iPSCs)...
October 1, 2017: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/28984835/dietary-inflammatory-index-and-cardiometabolic-risk-parameters-in-overweight-and-sedentary-subjects
#5
Claudia Marcela Camargo-Ramos, Jorge Enrique Correa-Bautista, María Correa-Rodríguez, Robinson Ramírez-Vélez
Nutrition has been established as a relevant factor in the development of cardiovascular disease (CVD). We aimed to investigate the relationship between the dietary inflammatory index (DII) and cardiometabolic risk parameters in a cohort of 90 overweight and sedentary adults from Bogotá, Colombia. A 24-h dietary record was used to calculate the DII. Body composition variables, flow-mediated dilation (FMD), pulse wave velocity (PWV), lipid profile, glucose, glycosylated hemoglobin (Hb1Ac), and blood pressure were measured and a cardiometabolic risk score (MetScore) was calculated...
October 6, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28968430/preferential-activation-of-hif-2%C3%AE-adaptive-signalling-in-neuronal-like-cells-in-response-to-acute-hypoxia
#6
Miguel A S Martín-Aragón Baudel, Mick T Rae, Mark G Darlison, Amy V Poole, Jennifer A Fraser
Stroke causes severe neuronal damage as disrupted cerebral blood flow starves neurons of oxygen and glucose. The hypoxia inducible factors (HIF-1α and HIF-2α) orchestrate oxygen homeostasis and regulate specific aspects of hypoxic adaptation. Here we show the importance of HIF-2α dependant signalling in neuronal adaptation to hypoxic insult. PC12 and NT2 cells were differentiated into neuronal-like cells using NGF and retinoic acid, and exposed to acute hypoxia (1% O2). Gene and protein expression was analysed by qPCR and immunoblotting and the neuronal-like phenotype was examined...
2017: PloS One
https://www.readbyqxmd.com/read/28968346/adjunctive-hyperbaric-oxygen-therapy-for-healing-of-chronic-diabetic-foot-ulcers-a-randomized-controlled-trial
#7
Chen-Yu Chen, Re-Wen Wu, Mei-Chi Hsu, Ching-Jung Hsieh, Man-Chun Chou
PURPOSE: The purpose of this study was to compare the effect of standard wound care with adjunctive hyperbaric oxygen therapy (HBOT) to standard wound care alone on wound healing, markers of inflammation, glycemic control, amputation rate, survival rate of tissue, and health-related quality of life in patients with diabetic foot ulcers (DFUs). DESIGN: Prospective, randomized, open-label, controlled study. SUBJECTS AND SETTING: The sample comprised 38 patients with nonhealing DFUs who were deemed poor candidates for vascular surgery...
September 29, 2017: Journal of Wound, Ostomy, and Continence Nursing
https://www.readbyqxmd.com/read/28966881/neuroimaging-biomarkers-of-caloric-restriction-on-brain-metabolic-and-vascular-functions
#8
Ai-Ling Lin, Ishita Parikh, Jared D Hoffman, David Ma
PURPOSE OF REVIEW: Non-invasive neuroimaging methods have been developed as powerful tools for identifying in vivo brain functions for studies in humans and animals. Here we review the imaging biomarkers that are being used to determine the changes within brain metabolic and vascular functions induced by caloric restriction (CR), and their potential usefulness for future studies with dietary interventions in humans. RECENT FINDINGS: CR causes an early shift in brain metabolism of glucose to ketone bodies, and enhances ATP production, neuronal activity and cerebral blood flow (CBF)...
March 2017: Current Nutrition Reports
https://www.readbyqxmd.com/read/28966701/in-vitro-particulate-analogue-fluids-for-experimental-studies-of-rheological-and-hemorheological-behavior-of-glucose-rich-rbc-suspensions
#9
Diana Pinho, Laura Campo-Deaño, Rui Lima, Fernando T Pinho
Suspensions of healthy and pathological red blood cells (RBC) flowing in microfluidic devices are frequently used to perform in vitro blood experiments for a better understanding of human microcirculation hemodynamic phenomena. This work reports the development of particulate viscoelastic analogue fluids able to mimic the rheological and hemorheological behavior of pathological RBC suspensions flowing in microfluidic systems. The pathological RBCs were obtained by an incubation of healthy RBCs at a high concentration of glucose, representing the pathological stage of hyperglycaemia in diabetic complications, and analyses of their deformability and aggregation were carried out...
September 2017: Biomicrofluidics
https://www.readbyqxmd.com/read/28965081/sirt1-sirt3-axis-regulates-human-blood-brain-barrier-permeability-in-response-to-ischemia
#10
Tao Chen, Shu-Hui Dai, Xia Li, Peng Luo, Jie Zhu, Yu-Hai Wang, Zhou Fei, Xiao-Fan Jiang
Sirtuin1 (Sirt1) and Sirtuin3 (Sirt3) are two well-characterized members of the silent information regulator 2 (Sir2) family of proteins. Both Sirt1 and Sirt3 have been shown to play vital roles in resistance to cellular stress, but the interaction between these two sirtuins has not been fully determined. In this study, we investigated the role of Sirt1-Sirt3 axis in blood-brain barrier (BBB) permeability after ischemia in vitro. Human brain microvascular endothelial cells and astrocytes were co-cultured to model the BBB in vitro and oxygen and glucose deprivation (OGD) was performed to mimic ischemia...
September 22, 2017: Redox Biology
https://www.readbyqxmd.com/read/28963101/chronic-psychological-stress-accelerates-vascular-senescence-and-impairs-ischemia-induced-neovascularization-the-role-of-dipeptidyl-peptidase-4-glucagon-like-peptide-1-adiponectin-axis
#11
Limei Piao, Guangxian Zhao, Enbo Zhu, Aiko Inoue, Rei Shibata, Yanna Lei, Lina Hu, Chenglin Yu, Guang Yang, Hongxian Wu, Wenhu Xu, Kenji Okumura, Noriyuki Ouchi, Toyoaki Murohara, Masafumi Kuzuya, Xian Wu Cheng
BACKGROUND: Exposure to psychosocial stress is a risk factor for cardiovascular disease, including vascular aging and regeneration. Given that dipeptidyl peptidase-4 (DPP4) regulates several intracellular signaling pathways associated with the glucagon-like peptide-1 (GLP-1) metabolism, we investigated the role of DPP4/GLP-1 axis in vascular senescence and ischemia-induced neovascularization in mice under chronic stress, with a special focus on adiponectin -mediated peroxisome proliferator activated receptor-γ/its co-activator 1α (PGC-1α) activation...
September 28, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28955248/aicar-administration-attenuates-hemorrhagic-hyperglycemia-and-lowers-oxygen-debt-in-anesthetized-male-rabbits
#12
Yi Huang, Paul H Ratz, Amy S Miner, Victoria A Locke, Grace Chen, Yang Chen, Robert W Barbee
Background: Many strategies have been utilized to treat traumatic shock via improved oxygen delivery (DO2), while fewer have been used to in an attempt to reduce oxygen demand (VO2). The cellular energy sensor 5' adenosine monophosphate-activated protein kinase (AMPK) has the potential to modulate both whole-body DO2 and VO2. Therefore, we determined the effect of the AMPK activator AICAR (5-aminoimidazole-4-carboxamide 1-β-D-ribonucleoside) given acutely or chronically on key metabolites, hemodynamics, and oxygen consumption/delivery before and during hemorrhage in anesthetized male rabbits...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28951822/systematic-single-cell-analysis-provides-new-insights-into-heterogeneity-and-plasticity-of-the-pancreas
#13
REVIEW
Sophie Tritschler, Fabian J Theis, Heiko Lickert, Anika Böttcher
BACKGROUND: Diabetes mellitus is characterized by loss or dysfunction of insulin-producing β-cells in the pancreas, resulting in failure of blood glucose regulation and devastating secondary complications. Thus, β-cells are currently the prime target for cell-replacement and regenerative therapy. Triggering endogenous repair is a promising strategy to restore β-cell mass and normoglycemia in diabetic patients. Potential strategies include targeting specific β-cell subpopulations to increase proliferation or maturation...
September 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/28944871/shear-stress-induces-human-aortic-endothelial-cell-apoptosis-via-interleukin%C3%A2-1-receptor%C3%A2-associated-kinase-2%C3%A2-induced-endoplasmic-reticulum-stress
#14
Longfei Pan, Zhou Hong, Lei Yu, Yanxia Gao, Rui Zhang, Hui Feng, Lijuan Su, Gang Wang
Atherosclerosis is characterized by localized lesions distributed in the arterial tree due to the shear stress produced by blood flow. Endothelial cells are directly affected by alterations in blood flow. Dysfunction and injury to endothelial cells has been hypothesized to initiate the pathological processes of atherosclerosis. The present study aimed to investigate the mechanism of shear stress‑induced endothelial cellular apoptosis. Shear stress was generated using an artificial device to mimic the impact of disturbed blood flow on cultured human aortic endothelial cells (HAECs)...
September 19, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28940557/skeletal-muscle-protein-accretion-rates-and-hindlimb-growth-are-reduced-in-late-gestation-intrauterine-growth-restricted-fetal-sheep
#15
Paul J Rozance, Laura Zastoupil, Stephanie R Wesolowski, David A Goldstrohm, Brittany Strahan, Melanie Cree-Green, Melinda Sheffield-Moore, Giacomo Meschia, William W Hay, Randall B Wilkening, Laura D Brown
Reduced skeletal muscle mass in the IUGR fetus persists into adulthood and may contribute to increased metabolic disease risk. To determine how placental insufficiency with reduced oxygen and nutrient supply to the fetus affects hindlimb blood flow, substrate uptake, and protein accretion rates in skeletal muscle, late gestation CON (n = 8) and IUGR (n = 13) fetal sheep were catheterized with aortic and femoral catheters and a flow transducer around the external iliac artery. Muscle protein kinetic rates were measured using isotopic tracers...
September 22, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28935927/effects-of-ticagrelor-in-a-mouse-model-of-ischemic-stroke
#16
Keita Yamauchi, Takahiko Imai, Masamitsu Shimazawa, Toru Iwama, Hideaki Hara
Ticagrelor is a direct acting and reversibly binding P2Y12 antagonist approved for the prevention of thromboembolic events. Its potential benefits in ischemic stroke have not been investigated sufficiently. Mice were subjected to 2 hours of transient middle cerebral artery occlusion (MCAO). Mice were orally treated with ticagrelor (10 or 30 mg/kg), aspirin (60 mg/kg), or vehicle at 3 and 24 hours before MCAO and 0 and 6 hours after reperfusion. The infarct volume and neurological deficits 22 hours after reperfusion were evaluated...
September 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28934176/positron-emission-tomographic-imaging-elucidates-the-complex-relationship-between-glucose-uptake-and-tissue-blood-flow-mechanism-in-squamous-cell-oral-cancer-patients
#17
Ping Xu, Yan Li, Shuyong Yang, Mingzhe Li, Chenjun Li
BACKGROUND Through the clinical use of positron emission tomography, we aimed to elucidate the complex relationship between glucose uptake and squamous cell oral cancer (ScOC) growth, along with its mechanism with respect to tissue blood flow (tBF). MATERIAL AND METHODS We retrospectively reviewed a total of 69 newly diagnosed ScOC patients by Fluorine-18 fluorodeoxyglucose (18F-FDG) positron emission tomography (PET). Maximum and mean standard uptake values (SUV↑ and SUV) were recorded to assess glucose uptake...
September 21, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28928797/role-of-mir-128-in-hypertension-induced-myocardial-injury
#18
Jie Yin, Hongyan Liu, Lei Huan, Suping Song, Liying Han, Faxin Ren, Zengtang Zhang, Zhiqiang Zang, Junye Zhang, Shu Wang
The present study aimed to investigate the role and mechanism of micro RNA (miR)-128 in hypertension-induced myocardial injury. The peripheral blood of patients with hypertension was collected and the expression of miR-128 was detected using fluorescence reverse transcription-quantitative polymerase chain reaction (RT-qPCR). Primary myocardial cells isolated from rat in vitro were cultured under conditions of hypoxia and glucose deprivation, and miR-128 expression was measured by RT-qPCR. The expression of c-Met protein was measured using western blot analysis and the apoptosis of transfected cells was measured by flow cytometry in rat myocardial cells following transfection with miR-128 mimics or c-Met siRNA...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28928674/the-gly-16-allele-of-the-g16r-single-nucleotide-polymorphism-in-the-%C3%AE-2-adrenergic-receptor-gene-augments-the-glycemic-response-to-adrenaline-in-humans
#19
Kim Z Rokamp, Jonatan M Staalsø, Morten Zaar, Peter Rasmussen, Lonnie G Petersen, Rikke V Nielsen, Niels H Secher, Niels V Olsen, Henning B Nielsen
Cerebral non-oxidative carbohydrate consumption may be driven by a β2-adrenergic mechanism. This study tested whether the 46G > A (G16R) single nucleotide polymorphism of the β2-adrenergic receptor gene (ADRB2) influences the metabolic and cerebrovascular responses to administration of adrenaline. Forty healthy Caucasian men were included from a group of genotyped individuals. Cardio- and cerebrovascular variables at baseline and during a 60-min adrenaline infusion (0.06 μg kg(-1) min(-1)) were measured by Model flow, near-infrared spectroscopy and transcranial Doppler sonography...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28927403/circulating-levels-and-characterization-of-microparticles-in-patients-with-different-degrees-of-glucose-tolerance
#20
Alessandra Giannella, Claudia Maria Radu, Lorenzo Franco, Elena Campello, Paolo Simioni, Angelo Avogaro, Saula Vigili de Kreutzenberg, Giulio Ceolotto
BACKGROUND: Microparticles (MPs) are vesicular structures shed from endothelial or circulating blood cells, after activation or apoptosis, and can be considered markers of vascular damage. We aimed to determine the levels of circulating MPs, their content of miRNA-126-3p and 5p, and their relationship with early endothelial activation/damage, in patients with different degree of glucose tolerance. METHODS: CD62E(+), CD62P(+), CD142(+), CD45(+) circulating MPs, their apoptotic (AnnexinV(+)) fractions, and miRNA-126 expression were determined in 39 prediabetic (PreDM), 68 type 2 diabetic (T2DM), and 53 control (NGT) subjects, along with main anthropometric and biochemical measurements...
September 19, 2017: Cardiovascular Diabetology
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