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https://www.readbyqxmd.com/read/28339646/tgf-%C3%AE-receptor-inhibition-prevents-ventricular-fibrosis-in-a-mouse-model-of-progressive-cardiac-conduction-disease
#1
Mickael Derangeon, Jérôme Montnach, Cynthia Ore Cerpa, Benoit Jagu, Justine Patin, Gilles Toumaniantz, Aurore Girardeau, Christopher Lh Huang, William H Colledge, Andrew A Grace, Isabelle Baró, Flavien Charpentier
Loss-of-function mutations in SCN5A, the gene encoding Nav1.5 channel, have been associated with inherited progressive cardiac conduction disease (PCCD). We have proposed that Scn5a heterozygous knock-out (Scn5a+/-) mice, which are characterized by ventricular fibrotic remodeling with ageing, represent a model for PCCD. Our objectives were to identify the molecular pathway involved in fibrosis development and prevent its activation. Methods and results: Our study shows that myocardial interstitial fibrosis occurred in Scn5a+/- mice only after 45 weeks of age...
February 17, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28335326/tuning-the-emission-energy-of-chemically-doped-graphene-quantum-dots
#2
Noor-Ul-Ain, Martin O Eriksson, Susann Schmidt, M Asghar, Pin-Cheng Lin, Per Olof Holtz, Mikael Syväjärvi, G Reza Yazdi
Tuning the emission energy of graphene quantum dots (GQDs) and understanding the reason of tunability is essential for the GOD function in optoelectronic devices. Besides material-based challenges, the way to realize chemical doping and band gap tuning also pose a serious challenge. In this study, we tuned the emission energy of GQDs by substitutional doping using chlorine, nitrogen, boron, sodium, and potassium dopants in solution form. Photoluminescence data obtained from (Cl- and N-doped) GQDs and (B-, Na-, and K-doped) GQDs, respectively exhibited red- and blue-shift with respect to the photoluminescence of the undoped GQDs...
November 3, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335304/silver-nanoparticle-embedded-thin-silica-coated-graphene-oxide-as-an-sers-substrate
#3
Xuan-Hung Pham, Eunil Hahm, Hyung-Mo Kim, Seongbo Shim, Tae Han Kim, Dae Hong Jeong, Yoon-Sik Lee, Bong-Hyun Jun
A hybrid of Ag nanoparticle (NP)-embedded thin silica-coated graphene oxide (GO@SiO₂@Ag NPs) was prepared as a surface-enhanced Raman scattering (SERS) substrate. A 6 nm layer of silica was successfully coated on the surface of GO by the physical adsorption of sodium silicate, followed by the hydrolysis of 3-mercaptopropyl trimethoxysilane. Ag NPs were introduced onto the thin silica-coated graphene oxide by the reduction of Ag⁺ to prepare GO@SiO₂@Ag NPs. The GO@SiO₂@Ag NPs exhibited a 1.8-fold enhanced Raman signal compared to GO without a silica coating...
September 22, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335201/size-and-shape-dependent-antibacterial-studies-of-silver-nanoparticles-synthesized-by-wet-chemical-routes
#4
Muhammad Akram Raza, Zakia Kanwal, Anum Rauf, Anjum Nasim Sabri, Saira Riaz, Shahzad Naseem
Silver nanoparticles (AgNPs) of different shapes and sizes were prepared by solution-based chemical reduction routes. Silver nitrate was used as a precursor, tri-sodium citrate (TSC) and sodium borohydride as reducing agents, while polyvinylpyrrolidone (PVP) was used as a stabilizing agent. The morphology, size, and structural properties of obtained nanoparticles were characterized by scanning electron microscopy (SEM), UV-visible spectroscopy (UV-VIS), and X-ray diffraction (XRD) techniques. Spherical AgNPs, as depicted by SEM, were found to have diameters in the range of 15 to 90 nm while lengths of the edges of the triangular particles were about 150 nm...
April 15, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28334922/scn2a-deletion-improves-survival-and-brain-heart-dynamics-in-the-kcna1-null-mouse-model-of-sudden-unexpected-death-in-epilepsy-sudep
#5
Vikas Mishra, Bharat K Karumuri, Nicole M Gautier, Rui Liu, Timothy N Hutson, Stephanie L Vanhoof-Villalba, Ioannis Vlachos, Leonidas Iasemidis, Edward Glasscock
People with epilepsy have greatly increased probability of premature mortality due to sudden unexpected death in epilepsy (SUDEP). Identifying which patients are most at risk of SUDEP is hindered by a complex genetic etiology, incomplete understanding of the underlying pathophysiology, and lack of prognostic biomarkers. Here we evaluated heterozygous Scn2a gene deletion (Scn2a+/-) as a protective genetic modifier in the Kcna1 knockout mouse (Kcna1-/-) model of SUDEP, while searching for biomarkers of SUDEP risk embedded in electroencephalography (EEG) and electrocardiography (ECG) recordings...
March 15, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28333050/oxidative-treatment-of-diclofenac-via-ferrate-vi-in-aqueous-media-effect-of-surfactant-additives
#6
Yingling Wang, Tianjun Ni, Jianmei Yuan, Chunfeng Wang, Guoguang Liu
The potential reaction of diclofenac (DCF) with ferrate(VI) and influences of coexisting surfactants have not been investigated in depth, and are the focus of this study. The results demonstrated that DCF reacted effectively and rapidly with Fe(VI) and approximately 75% of DCF (0.03 mM) was removed by excess Fe(VI) (0.45 mM) within 10 min. All of the reactions followed pseudo first-order kinetics with respect to DCF and Fe(VI), where the apparent second-order rate constant (kapp) was 5.07 M(-1) s(-1) at pH 9...
March 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28332871/sodium-glucose-cotransporter-2-and-dipeptidyl-peptidase-4-inhibition-promise-of-a-dynamic-duo
#7
Ildiko Lingvay
OBJECTIVE: This article reviews evidence supporting sodium glucose cotransporter 2 (SGLT2) inhibitor and dipeptidyl peptidase-4 (DPP-4) inhibitor combination therapy for management of type 2 diabetes mellitus (T2DM). METHODS: We conducted a non-systematic review of the literature focusing on single-pill or fixed-dose combinations of SGLT2 inhibitors and DPP-4 inhibitors available in the United States. RESULTS: SGLT2 inhibitors and DPP-4 inhibitors have complementary mechanisms of action that address several of the underlying pathophysiological abnormalities present in T2DM without overlapping toxicities...
March 23, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28332813/competitive-adsorption-of-polyelectrolytes-onto-and-into-pellicle-coated-hydroxyapatite-investigated-by-qcm-d-and-force-spectroscopy
#8
Hyun-Su Lee, Carl Myers, Lynette Zaidel, Prathima Chandra Nalam, Matthew Alexander Caporizzo, Carlo Daep, David M Eckmann, James G Masters, Russell J Composto
A current effort in preventive dentistry is to inhibit surface attachment of bacteria using antibacterial polymer coatings on the tooth surface. For the antibacterial coatings, the physisorption of anionic and cationic polymers directly onto hydroxyapatite (HA) and saliva treated HA surfaces was studied using quartz crystal microbalance, force spectroscopy and atomic force microscopy. First, single species adsorption is shown to be stronger on HA surfaces than on silicon oxide surfaces for all polymers (i.e...
March 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28332143/the-relationship-between-increases-in-morning-spot-urinary-glucose-excretion-and-decreases-in-hba1c-in-patients-with-type-2-diabetes-after-taking-an-sglt2-inhibitor-a-retrospective-longitudinal-study
#9
So Ra Kim, Yong-Ho Lee, Eun Seok Kang, Bong-Soo Cha, Byung-Wan Lee
INTRODUCTION: Sodium glucose co-transporter 2 (SGLT2) inhibitors increase urinary glucose excretion (UGE) by reducing the renal threshold for glucose excretion, which results in decreased serum glucose concentrations in patients with type 2 diabetes mellitus (T2D). However, no study to date has determined whether larger increases in UGE after SGLT2 inhibitor treatment correspond to larger reductions in glycated hemoglobin (HbA1C). METHODS: We enrolled participants who were newly prescribed an SGLT2 inhibitor (dapagliflozin 10 mg or ipragliflozin 50 mg, once daily) as an add-on therapy...
March 22, 2017: Diabetes Therapy: Research, Treatment and Education of Diabetes and related Disorders
https://www.readbyqxmd.com/read/28332118/nutrition-and-training-influences-on-the-regulation-of-mitochondrial-adenosine-diphosphate-sensitivity-and-bioenergetics
#10
REVIEW
Graham P Holloway
Since the seminal finding almost 50 years ago that exercise training increases mitochondrial content in skeletal muscle, a considerable amount of research has been dedicated to elucidate the mechanisms inducing mitochondrial biogenesis. The discovery of peroxisome proliferator-activated receptor γ co-activator 1α as a major regulator of exercise-induced gene transcription was instrumental in beginning to understand the signals regulating this process. However, almost two decades after its discovery, our understanding of the signals inducing mitochondrial biogenesis remain poorly defined, limiting our insights into possible novel training modalities in elite athletes that can increase the oxidative potential of muscle...
March 22, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28328022/modifications-to-the-azide-method-for-nitrate-isotope-analysis
#11
Ying Tu, Yunting Fang, Dongwei Liu, Yuepeng Pan
RATIONALE: The azide method for measuring the stable isotope ratios of nitrate (NO3(-) ) is easy to set up. However, the method requires spongy cadmium (Cd) or activated Cd powder which are not easy to prepare, and a toxic azide buffer is used. We aimed to use Cd powder directly to simplify preparation and to substantially reduce the azide dose. METHODS: The reaction conditions were optimized in order to maximize the NO3(-) reduction yield. The original azide buffer was diluted by 10- to 10000-fold with or without addition of sodium acetate to reduce O-exchange between nitrite (NO2(-) ) and H2 O...
May 30, 2016: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28327520/cytotoxicity-bactericidal-and-antioxidant-activity-of-sodium-alginate-hydrosols-treated-with-direct-electric-current
#12
Żaneta Król, Krzysztof Marycz, Dominika Kulig, Monika Marędziak, Andrzej Jarmoluk
The aim of the study was to investigate the effect of using direct electric current (DC) of 0, 200, and 400 mA for five minutes on the physiochemical properties, cytotoxicity, antibacterial, and antioxidant activity of sodium alginate hydrosols with different sodium chloride concentrations. The pH, oxidation-reduction potential (ORP), electrical conductivity (EC), and available chlorine concentration (ACC) were measured. The effect of sodium alginate hydrosols treated with DC on Staphylococcus aureus, Listeria monocytogenes, Bacillus cereus, Micrococcus luteus, Escherichia coli, Salmonella enteritidis, Yersinia enterocolitica, Pseudomonas fluorescence, and RAW 264...
March 22, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28327140/efficacy-and-safety-of-canagliflozin-in-patients-with-type-2-diabetes-based-on-history-of-cardiovascular-disease-or-cardiovascular-risk-factors-a-post-hoc-analysis-of-pooled-data
#13
Michael J Davies, Katherine Merton, Ujjwala Vijapurkar, Jacqueline Yee, Rong Qiu
BACKGROUND: Treatment of patients with type 2 diabetes mellitus (T2DM) and a history of cardiovascular (CV) disease or CV risk factors may present clinical challenges due to the presence of comorbid conditions and the use of concomitant medications. The sodium glucose co-transporter 2 inhibitor, canagliflozin, has been shown to improve glycaemic control and reduce body weight and blood pressure (BP) with a favourable tolerability profile in a broad range of patients with T2DM. This post hoc analysis assessed the efficacy and safety of canagliflozin in patients with T2DM based on CV disease history or CV risk factors...
March 21, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28326714/-effect-of-pinus-massoniana-needle-extract-on-root-dentin-demineralization-in-vitro
#14
Tang Chengfang, Ruan Jianping, Zhu Yong, Li Zixia, Zuo Yanping, Xu Hongyan
OBJECTIVE: This study aims to evaluate the effects of Pinus massoniana needle extract (PMNE) on inhibiting demineralization of root dentin. METHODS: Root dentin blocks were randomly divided into distilled deionized water (DDW) group, fluoride sodium (NaF) group, and 4%, 8% and 12% PMNE groups according to the experimental solution used in the process of pH cycling in each group. All specimens in each group experienced pH cycling for 8 d. The dentin mineral density (DMD) of the normal dentin and demineralized dentin and their D-value (ΔDMD) were determined using micro computed tomography...
October 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28324484/sodium-glucose-co-transporter-2-sglt2-inhibitor-comparing-trial-data-and-real-world-use
#15
Andrew McGovern, Michael Feher, Neil Munro, Simon de Lusignan
INTRODUCTION: The first cardiovascular safety trial in the sodium-glucose co-transporter-2 (SGLT2) inhibitor drug class, the Empagliflozin Cardiovascular Outcomes and Mortality in Type 2 Diabetes (EMPA-REG OUTCOME) trial, demonstrated significant cardiovascular risk reduction with empagliflozin. It is currently not clear what proportions of people with type 2 diabetes (T2DM) have the same high cardiovascular risk as those included in the trial, and will therefore be likely to experience the same cardiovascular benefit...
March 21, 2017: Diabetes Therapy: Research, Treatment and Education of Diabetes and related Disorders
https://www.readbyqxmd.com/read/28323512/evaluating-the-costs-of-glycemic-response-with-canagliflozin-versus-dapagliflozin-and-empagliflozin-as-add-on-to-metformin-in-patients-with-type-2-diabetes-mellitus-in-the-united-arab-emirates
#16
Agata Schubert, Anders T Buchholt, Antoine C El Khoury, Ahmed Kamal, Vanessa Taieb
OBJECTIVE: This study evaluates the cost of achieving glycemic control with 3 sodium glucose co-transporter 2 (SGLT2) inhibitors, canagliflozin, dapagliflozin, and empagliflozin, in patients with type 2 diabetes mellitus (T2DM) from the payer perspective in the United Arab Emirates (UAE). METHODS: A systematic literature review identified randomized controlled trials of antihyperglycemic agents as add-on to metformin in patients with T2DM of 26 ± 4 weeks in duration, published by 10 September 2014...
March 21, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28321001/comparative-effects-of-an-angiotensin-ii-receptor-blocker-arb-diuretic-vs-arb-calcium-channel-blocker-combination-on-uncontrolled-nocturnal-hypertension-evaluated-by-information-and-communication-technology-based-nocturnal-home-blood-pressure-monitoring%C3%A3-the
#17
Kazuomi Kario, Naoko Tomitani, Hiroshi Kanegae, Hajime Ishii, Kazuaki Uchiyama, Kayo Yamagiwa, Toshihiko Shiraiwa, Tomohiro Katsuya, Tetsuro Yoshida, Kiyomi Kanda, Shinji Hasegawa, Satoshi Hoshide
BACKGROUND: Nocturnal blood pressure (BP) is an independent risk factor of cardiovascular events. The NOCTURNE study, a multicenter, randomized controlled trial (RCT) using our recently developed information and communication technology (ICT) nocturnal home BP monitoring (HBPM) device, was performed to compare the nocturnal HBP-lowering effects of differential ARB-based combination therapies in 411 Japanese patients with nocturnal hypertension (HT).Methods and Results:Patients with nocturnal BP ≥120/70 mmHg at baseline even under ARB therapy (100 mg irbesartan daily) were enrolled...
March 17, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28320537/a-randomized-clinical-trial-comparing-2-ibuprofen-formulations-in-patients-with-acute-odontogenic-pain
#18
Tanjit Taggar, Di Wu, Asma A Khan
INTRODUCTION: Ibuprofen sodium dihydrate, a new formulation of ibuprofen, was introduced with the claim of faster onset of analgesia. Most of the data on this new ibuprofen formulation are drawn from studies using the oral surgery model. Because this model differs significantly from the endodontic pain model, we conducted a study comparing ibuprofen sodium dihydrate with conventional ibuprofen acid in endodontic pain patients. METHODS: This randomized, double-masked study recruited subjects experiencing moderate to severe pain from a tooth diagnosed with symptomatic irreversible pulpitis and symptomatic apical periodontitis (n = 41)...
March 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28316391/antileishmanial-and-immunomodulatory-potential-of-ocimumsanctum-linn-and-cocosnucifera-linn-in-murine-visceral-leishmaniasis
#19
Gaurav Bhalla, Sukhbir Kaur, Jaspreet Kaur, Rupinder Kaur, Puneet Raina
The role of immunomodulation in the therapeutic treatment of visceral leishmaniasis has gained eminence in view of moderate to severe drawbacks of the currently available drugs like toxicity, drug resistance and prohibitive costs. The potential for modulation of the immune system of many herbal plants can be tapped to address these problems. We conducted the present research study to investigate the antileishmanial and immunomodulatory effects of Ocimum sanctum Linn. and Cocos nucifera Linn. during the progression of visceral leishmaniasis in BALB/c mouse model...
March 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28315138/anticoccidial-effects-of-aloe-secundiflora-leaf-extract-against-eimeria-tenella-in-broiler-chicken
#20
Fredrick Kaingu, Dandan Liu, Lele Wang, Jianping Tao, Rebecca Waihenya, Helen Kutima
Anticoccidial effects of Aloe secundiflora crude leaf extract was tested in broiler chickens following oral infection with Eimeria tenella. Sixty 22-day-old birds were divided into six groups of ten birds each. Three treatment groups A, B, and C were fed with the extract (100, 250, and 500 mg/day, respectively) mixed in feed for 10 days, and three control groups: group D (drug control) administered 300 mg/l of sulfachloropyrazine sodium soluble powder in drinking water for 5 days, group E (infected/non-medicated positive control), and group F (uninfected/non-medicated negative control)...
March 17, 2017: Tropical Animal Health and Production
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