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https://www.readbyqxmd.com/read/27926856/insulin-dependent-activation-of-mch-neurons-impairs-locomotor-activity-and-insulin-sensitivity-in-obesity
#1
A Christine Hausen, Johan Ruud, Hong Jiang, Simon Hess, Hristo Varbanov, Peter Kloppenburg, Jens C Brüning
Melanin-concentrating-hormone (MCH)-expressing neurons (MCH neurons) in the lateral hypothalamus (LH) are critical regulators of energy and glucose homeostasis. Here, we demonstrate that insulin increases the excitability of these neurons in control mice. In vivo, insulin promotes phosphatidylinositol 3-kinase (PI3K) signaling in MCH neurons, and cell-type-specific deletion of the insulin receptor (IR) abrogates this response. While lean mice lacking the IR in MCH neurons (IR(ΔMCH)) exhibit no detectable metabolic phenotype under normal diet feeding, they present with improved locomotor activity and insulin sensitivity under high-fat-diet-fed, obese conditions...
December 6, 2016: Cell Reports
https://www.readbyqxmd.com/read/27925659/impaired-left-atrial-conduit-function-in-coronary-artery-disease-patients-with-poorly-controlled-diabetes-two-dimensional-speckle-tracking-echocardiographic-study
#2
Ali Hosseinsabet, Reza Mohseni-Badalabadi, Ali Moinfar
OBJECTIVES: The myocardium can be affected by diabetes mellitus. The effects of blood glucose control on some organs such as the kidney and eye have been previously reported. The aim of our study was to evaluate left atrial function via 2-dimensional (2D) speckle-tracking echocardiography in a group of coronary artery disease (CAD) patients with well-controlled diabetes (hemoglobin A1c [HbA1c] < 7%) and to compare it with that in a group of CAD patients with poorly controlled diabetes...
November 28, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27925493/the-effect-of-freeze-drying-on-the-nutrient-polyphenol-and-oxidant-levels-of-breast-milk
#3
Mariela Valentina Cortez, Elio Andrés Soria
OBJECTIVES: Human milk banks need to extend the suitability of milk for breastfeeding, and for this technological advances are required. Our aim was to establish the capacity of freeze-drying to conserve milk properties without further oxidative deterioration. METHODS: One hundred sixteen healthy women participated from the city of Cordoba (Argentina). Proteins, glucose, triglycerides, polyphenols, and markers (nitrites, superoxide anion, hydroperoxides, lipoperoxides, and γ-glutamyl transpeptidase) were measured in their fresh milk...
December 2016: Breastfeeding Medicine: the Official Journal of the Academy of Breastfeeding Medicine
https://www.readbyqxmd.com/read/27925353/effect-of-sodium-glucose-cotransporter-2-inhibitor-on-liver-function-tests-in-japanese-patients-with-non-alcoholic-fatty-liver-disease-and-type-2-diabetes-mellitus
#4
Yuya Seko, Yoshio Sumida, Saiyu Tanaka, Kojiroh Mori, Hiroyoshi Taketani, Hiroshi Ishiba, Tasuku Hara, Akira Okajima, Atsushi Umemura, Taichiro Nishikawa, Kanji Yamaguchi, Michihisa Moriguchi, Kazuyuki Kanemasa, Kohichiroh Yasui, Shunsuke Imai, Keiji Shimada, Yoshito Itoh
AIM: No pharmacological therapies have been established for non-alcoholic fatty liver disease (NAFLD). Sodium glucose cotransporter 2 inhibitor (SGLT2I) was developed for the treatment of adults with type 2 diabetes mellitus (T2DM). The aim of this retrospective study is to evaluate the efficacy of SGLT2I in NAFLD patients with T2DM. METHODS: Twenty-four biopsy-proven NAFLD patients with T2DM who received SGLT2I for 24 weeks were retrospectively enrolled as the SGLT2I group...
November 2, 2016: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/27925306/graphene-oxide-based-enzyme-nanoarchitectonics-for-substrate-channeling
#5
Motilal Mathesh, Jingquan Liu, Colin J Barrow, Wenrong Yang
The controlled spatial organization or compartmentalization of multi-enzyme cascade reactions to transfer a substrate from one enzyme to another for substrate channeling on scaffolds has sparked increasing interest in recent years. Here, we use graphene oxides to study the dependence of the activity of cascade reactions in a closely packed, randomly immobilized enzyme system on a 2 D scaffold. We first observe that the hydrophobicity of graphene oxides and various enzyme architectures for co-immobilized systems are important attributes for achieving high product-conversion rates...
December 7, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27925207/acetate-metabolism-does-not-reflect-astrocytic-activity-contributes-directly-to-gaba-synthesis-and-is-increased-by-silent-information-regulator-1-activation
#6
Benjamin D Rowlands, Matthias Klugmann, Caroline D Rae
[(13) C]acetate is known to label metabolites preferentially in astrocytes rather than neurons and it has consequently been used as a marker for astrocytic activity. Recent discoveries suggest that control of acetate metabolism and its contributions to the synthesis of metabolites in brain is not as simple as first thought. Here, using a Guinea pig brain cortical tissue slice model metabolizing [1-(13) C]D-glucose and [1,2-(13) C]acetate, we investigated control of acetate metabolism and the degree to which it reflects astrocytic activity...
December 7, 2016: Journal of Neurochemistry
https://www.readbyqxmd.com/read/27925010/the-effects-of-a-simple-method-for-cryopreservation-and-thawing-procedures-on-cord-blood-derived-dc-based-esophageal-carcinoma-vaccine
#7
J Yu, L Xie, S Chen, J Zhang, G Guo, B Chen
BACKGROUND: Producing sufficient numbers of DCs at one time point and subsequently cryopreserving the generated DCs in ready-for-use aliquots for clinical application is useful in cancer treatment. OBJECTIVE: To study the effects of a simplified cryopreservation method and thawing procedures acting on the biological characteristics and specific cytotoxic activity of cord blood derived DC-based esophageal carcinoma vaccine. MATERIALS AND METHODS: CD34+ hematopoietic stem cells were isolated from cord blood using CD34+ Progenitor Cell Isolation Kit by magnetic cell sorting system (MACS)...
July 2016: Cryo Letters
https://www.readbyqxmd.com/read/27925009/characteristics-and-fertility-of-sumatran-tiger-spermatozoa-cryopreserved-with-different-sugars
#8
Ni Wayan Kurniani Karja, Mokhamad Fahrudin, Mohamad Agus Setiadi, Ligaya Ita Tumbelaka, Retno Sudarwati, Yohana Tri Hastuti, Bongot Huas Mulia, Ardyta Widianti, Keni Sultan, Tsukasa Terazono, Zhao Namula, Masayasu Taniguchi, Fuminori Tanihara, Tatsuya Takemoto, Kazuhiro Kikuchi, Yoko Sato, Takeshige Otoi
BACKGROUND: Cryopreservation of semen is one of the most important methods for the preservation of endangered tigers. OBJECTIVE: This study evaluated the effects of sugar supplementation on the cryosurvival of spermatozoa from Sumatran tigers (Panthera tigris sumatrae). MATERIALS AND METHODS: The post-thaw characteristics and fertility of spermatozoa cryopreserved with different sugars (glucose, lactose, and trehalose) were evaluated using heterologous in-vitro fertilisation with cat oocytes...
July 2016: Cryo Letters
https://www.readbyqxmd.com/read/27924974/mir-155-regulates-high-glucose-induced-cardiac-fibrosis-via-the-tgf-%C3%AE-signaling-pathway
#9
Dong Zhang, Yongchun Cui, Bin Li, Xiaokang Luo, Bo Li, Yue Tang
Cardiac fibrosis, as a pathological process, plays an important role in various cardiac diseases. microRNA-155 (miR-155) is one of the most important miRNAs, and previous studies have shown that it is a regulatory factor in various fibrotic diseases. However, the mechanism by which miR-155 affects myocardial fibrosis remains unclear. In this study, we aim to establish the biological function of miR-155 in myocardial fibrosis induced by diabetes in mice. We used normal C57BL/6 wild type (WT) and miR-155 knockout (KO) mice to establish the diabetic model by intraperitoneal injection of streptozotocin, and we utilized echocardiography to evaluate the cardiac function at 30 and 60 days post-modeling...
December 7, 2016: Molecular BioSystems
https://www.readbyqxmd.com/read/27924929/fast-interfacial-charge-transfer-in-%C3%AE-fe2o3-%C3%AE-c%C3%AE-fevo4-x-%C3%AE-cx-%C3%AE-c-bulk-heterojunctions-with-controllable-phase-content
#10
Chengcheng Zhao, Guoqiang Tan, Wei Yang, Chi Xu, Ting Liu, Yuning Su, Huijun Ren, Ao Xia
The novelties in this paper are embodied in the fast interfacial charge transfer in α-Fe2O3-δCδ/FeVO4-x+δCx-δ@C bulk heterojunctions with controllable phase compositions. The carbon source-glucose plays an important role as the connecting bridge between the micelles in the solution, forming interfacial C-O, C-O-Fe and O-Fe-C bonds through dehydration and polymerization reactions. Then the extra VO3(-) around the FeVO4 colloidal particles can react with unstable Fe(OH)3, resulting the phase transformation from α-Fe2O3 (47...
December 7, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27924636/safety-and-tolerability-of-glucagon-like-peptide-1-receptor-agonists-unresolved-and-emerging-issues
#11
Denis Raccah
Glucagon-like peptide-1 receptor agonists (GLP-1 RAs) are a mainstay of treatment options for Type 2 diabetes. They contribute to lowering blood glucose levels, generally have a favorable tolerability profile, and can be used alone or in combination with other antidiabetic agents. Based on the duration of their effects, GLP-1 RAs can be divided into two classes: short-acting and long-acting. Differences exist between these sub-classes, and between each drug, in terms of pharmacokinetic and pharmacodynamic profiles...
December 7, 2016: Expert Opinion on Drug Safety
https://www.readbyqxmd.com/read/27924122/a-tomato-plastidic-atp-adp-transporter-gene-slaatp-increases-starch-content-in-transgenic-arabidopsis
#12
Feibing Wang, Yuxiu Ye, Yuan Niu, Faxiang Wan, Bo Qi, Xinhong Chen, Qing Zhou, Boqing Chen
A plastidic ATP/ADP transporter (AATP) is responsible for importing ATP from the cytosol into plastids. Increasing the ATP supply is a potential way to facilitate anabolic synthesis in heterotrophic plastids of plants. In this work, a gene encoding the AATP protein, named SlAATP, was successfully isolated from tomato. Expression of SlAATP was induced by exogenous sucrose treatment in tomato. The coding region of SlAATP was cloned into a binary vector under the control of 35S promoter and then transformed into Arabidopsis to obtain transgenic plants...
October 2016: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/27924111/effect-of-magnesium-supplementation-on-glucose-metabolism-in-people-with-or-at-risk-of-diabetes-a-systematic-review-and-meta-analysis-of-double-blind-randomized-controlled-trials
#13
N Veronese, S Watutantrige-Fernando, C Luchini, M Solmi, G Sartore, G Sergi, E Manzato, M Barbagallo, S Maggi, B Stubbs
No abstract text is available yet for this article.
December 2016: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/27924082/duodenal-endoluminal-barrier-sleeve-alters-gut-microbiota-of-zdf-rats
#14
T Kim, C L Holleman, T Ptacek, C D Morrow, K M Habegger
BACKGROUND/OBJECTIVES: The combination of energy dense diets and reduced energy expenditure in modern society has escalated the prevalence of obesity and obesity-related comorbidities. Among these disease-states, type-2 diabetics (T2D) are disproportionately associated with obesity, suggesting a shared etiology. In conjunction with defects in hormonal and inflammatory states, obesity and T2D are also characterized by dysbiosis. METHODS: We have recently described the beneficial effects of duodenal nutrient exclusion, as induced by the duodenal endoluminal sleeve (DES); including body weight loss, prevented fat mass accumulation, and improved glucose tolerance in the ZDF rat, a rodent model of obesity and type-2 diabetes (T2D)...
December 7, 2016: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/27923989/metabolic-control-of-tobacco-pollination-by-sugars-and-invertases
#15
Marc Goetz, Anne Guivarc'h, Jörg Hirsche, Martin Andreas Bauerfeind, María-Cruz González, Tae Kyung Hyun, Seung Hee Eom, Dominique Chriqui, Thomas Engelke, Dominik K Großkinsky, Thomas Roitsch
Pollination in flowering plants is initiated by germination of pollen grains on stigmas followed by fast growth of pollen tubes representing highly energy-consuming processes. The symplastic isolation of pollen grains and tubes requires import of sucrose available in the apoplast. We show that the functional coupling of sucrose cleavage by invertases and uptake of the released hexoses by monosaccharide transporters are critical for pollination in tobacco. Transcript profiling, in situ hybridization and immunolocalization of extracellular invertases and two monosaccharide transporters in vitro and in vivo support the functional coupling in supplying carbohydrates for pollen germination and tube growth evidenced by spatiotemporally coordinated expression...
December 6, 2016: Plant Physiology
https://www.readbyqxmd.com/read/27923980/humanin-skeletal-muscle-protein-levels-increase-after-resistance-training-in-men-with-impaired-glucose-metabolism
#16
Eva-Karin Gidlund, Ferdinand von Walden, Mika Venojärvi, Ulf Risérus, Olli J Heinonen, Jessica Norrbom, Carl Johan Sundberg
Humanin (HN) is a mitochondrially encoded and secreted peptide linked to glucose metabolism and tissue protecting mechanisms. Whether skeletal muscle HN gene or protein expression is influenced by exercise remains unknown. In this intervention study we show, for the first time, that HN protein levels increase in human skeletal muscle following 12 weeks of resistance training in persons with prediabetes. Male subjects (n = 55) with impaired glucose regulation (IGR) were recruited and randomly assigned to resistance training, Nordic walking or a control group...
December 2016: Physiological Reports
https://www.readbyqxmd.com/read/27923809/role-of-autonomic-nervous-system-in-chronic-cns-mediated-antidiabetic-action-of-leptin
#17
Alexandre A da Silva, John E Hall, Sydney P Moak, Jackson Browning, Haley J Houghton, Giovana C Micheloni, Jussara M do Carmo
This study tested whether chronic ganglionic blockade or hepatic vagotomy attenuates the chronic CNS-mediated antidiabetic and cardiovascular effects of leptin. Male Sprague-Dawley rats were instrumented with telemetry probes and arterial and venous catheters for determination of blood pressure (BP), heart rate (HR), blood sampling and intravenous (IV) infusions. An intracerebroventricular (ICV) cannula was placed into the brain lateral ventricle for infusion of leptin or vehicle. After control measurements, streptozotocin (STZ) was injected IV (50 mg/kg) to induce diabetes and 5 days later leptin (n=6) or saline vehicle (n=5) was infused ICV for 12 days via osmotic pumps...
December 6, 2016: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27923787/type-of-supplemented-simple-sugar-not-merely-calorie-intake-determines-adverse-effects-on-metabolism-and-aortic-function-in-female-rats
#18
Gemma Sangüesa, Sonali Shaligram, Farjana Akhter, Núria Roglans, Juan C Laguna, Roshanak Rahimian, Marta Alegret
High consumption of simple sugars causes adverse cardio-metabolic effects. We investigated the mechanisms underlying the metabolic and vascular effects of glucose or fructose intake and determined whether these effects are exclusively related to increased calorie consumption. Female Sprague-Dawley rats were supplemented with 20% w/v glucose or fructose for 2 months, and plasma analytes and aortic response to vasodilator and vasoconstrictor agents were determined. Expression of molecules associated with lipid metabolism, insulin signalling and vascular response were evaluated in hepatic and/or aortic tissues...
December 6, 2016: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/27923774/mechanistic-insights-into-selective-killing-of-oxphos-dependent-cancer-cells-by-arctigenin
#19
Karin Brecht, Virginie Riebel, Philippe Couttet, Franziska Paech, Armin Wolf, Salah-Dine Chibout, Francois Pognan, Stephan Krähenbühl, Marianne Uteng
Arctigenin has previously been identified as a potential anti-tumor treatment for advanced pancreatic cancer. However, the mechanism of how arctigenin kills cancer cells is not fully understood. In the present work we studied arctigenin's mechanism of toxicity in the human pancreatic cell line, Panc-1, with special emphasis on the mitochondria. A comparison of Panc-1 cells cultured in glucose versus galactose medium was applied, allowing assessments of effects in glycolytic versus oxidative phosphorylation (OXPHOS)-dependent Panc-1 cells...
December 3, 2016: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/27923406/ameliorative-effects-of-rutin-against-metabolic-biochemical-and-hormonal-disturbances-in-polycystic-ovary-syndrome-in-rats
#20
Sarwat Jahan, Faryal Munir, Suhail Razak, Anam Mehboob, Qurat Ul Ain, Hizb Ullah, Tayyaba Afsar, Ghazala Shaheen, Ali Almajwal
BACKGROUND: Polycystic ovary syndrome (PCOS) is the most prevalent endocrinopathy in women of reproductive age. The study was commenced to assess the favorable effects of Rutin against metabolic, biochemical, histological, and androgenic aspects of polycystic ovary syndrome in rats. METHODS: Female Sprague-Dawley rats were administered letrozole (1 mg/kg) per orally (p.o) for a period of 21 days for the induction of PCOS, followed by dose of rutin (100 mg/kg and 150 mg/kg, p...
December 7, 2016: Journal of Ovarian Research
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