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https://www.readbyqxmd.com/read/29145634/risk-profiles-for-acute-health-events-after-incident-atrial-fibrillation-in-patients-with-end-stage-renal-disease-on-hemodialysis
#1
Medha Airy, Tara I Chang, Victoria Y Ding, Benjamin A Goldstein, Nisha Bansal, Jingbo Niu, Sankar D Navaneethan, Mintu P Turakhia, Wolfgang C Winkelmayer
Background: Little is known about the cardiovascular risks of incident atrial fibrillation/flutter (AF) in patients with end-stage renal disease (ESRD) undergoing hemodialysis (HD). Methods: We studied older US patients who newly initiated HD for ESRD (2006-11) and who had not previously been diagnosed with AF, stroke, myocardial infarction (MI) or hip fracture. We used Cox regression with AF as a time-varying covariate, adjusted for socio-demographic characteristics and comorbidities to estimate hazard ratios [HRs (95% confidence intervals)] for the events of ischemic stroke, MI and death...
November 13, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29142512/non-steroidal-anti-inflammatory-drug-induced-enteropathy
#2
REVIEW
Sung Jae Shin, Choong-Kyun Noh, Sun Gyo Lim, Kee Myung Lee, Kwang Jae Lee
Non-steroidal anti-inflammatory drugs (NSAIDs) are well known to be associated with serious upper gastrointestinal complications, such as peptic ulcer, bleeding, perforation, and obstruction. Recently, attention has been mainly focused on the small bowel injuries caused by NSAIDs, and new endoscopic techniques such as capsule endoscopy and double balloon endoscopy can help in detecting such injuries. This article reviewed the epidemiology, pathogenesis, clinical manifestations, diagnosis, and treatment of small bowel injuries caused by NSAIDs...
October 2017: Intestinal Research
https://www.readbyqxmd.com/read/29139276/preventing-stroke-and-assessing-risk-in-women
#3
Tracey Keteepe-Arachi, Sanjay Sharma
Ischaemic stroke is rare in premenopausal women but risk increases with advancing age and doubles in the ten years following the menopause. Up to the age of 75 years men have a 25% higher risk of suffering a stroke compared with women. However, the increased life expectancy of women ultimately results in a higher overall incidence. Twice as many women die from stroke compare with breast cancer. Women with cerebrovascular disease are more likely to present with atypical symptoms than men. Altered mental status (including unresponsiveness, confusion and behavioural change) is the most common nonconventional symptom, and is reported by 23% of women compared with 15% of men...
March 2017: Practitioner
https://www.readbyqxmd.com/read/29132988/safety-and-immunogenicity-of-a-novel-multiple-antigen-pneumococcal-vaccine-in-adults-a-phase-1-randomised-clinical-trial
#4
Claire Entwisle, Sue Hill, Yin Pang, Michael Joachim, Ann McIlgorm, Camilo Colaco, David Goldblatt, Polly De Gorguette D'Argoeuves, Chris Bailey
BACKGROUND: Pneumococcal vaccines, combining multiple protein antigens, provide an alternative approach to currently marketed vaccines and may provide broader protection against pneumococcal disease. This trial evaluated the safety and immunogenicity of a novel vaccine candidate PnuBioVax in healthy young adults. METHODS: In a Phase 1 double-blind study, 36 subjects (18-40 years) were randomised to receive 3 doses of PnuBioVax, 28 days apart, at one of three dose levels (50, 200, 500 µg) or placebo...
November 10, 2017: Vaccine
https://www.readbyqxmd.com/read/29131589/using-tryptophan-mutants-to-probe-the-structural-and-functional-status-of-bssco-a-copper-binding-cytochrome-c-oxidase-assembly-protein-from-bacillus-subtilis
#5
Shina Hussain, Diann Andrews, Bruce Charles Hill
The Synthesis of Cytochrome Oxidase protein from Bacillus subtilis (i.e., BsSCO) binds copper with pM affinity, which increases the protein's melting temperature (i.e., TM) by 20 oC. Here two native tryptophans (i.e., W36 and W101) are identified as major contributors to BsSCO's structural form and their contributions to stability, intrinsic fluorescence and copper binding properties of BsSCO are explored. Single mutations of tryptophan to phenylalanine decrease TM by 10 oC and folding free energy by 3-4 kcal/mol...
November 13, 2017: Biochemistry
https://www.readbyqxmd.com/read/29131061/kinetic-aspects-of-verapamil-binding-on-rate-on-wild-type-and-six-hkv1-3-mutant-channels
#6
Ann-Kathrin Diesch, Stephan Grissmer
BACKGROUND/AIMS: The human-voltage gated Kv1.3 channel (hKv1.3) is expressed in T- and B lymphocytes. Verapamil is able to block hKv1.3 channels. We characterized the effect of verapamil on currents through hKv1.3 channels paying special attention to the on-rate (kon) of verapamil. By comparing on-rates obtained in wild-type (wt) and mutant channels a binding pocket for verapamil and impacts of different amino acid residues should be investigated. METHODS: Using the whole-cell patch clamp technique the action of verapamil on currents through wild-type and six hKv1...
November 6, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29126292/safety-and-immunogenicity-of-inactivated-varicella-zoster-virus-vaccine-in-adults-with-autoimmune-disease-a-phase-2-randomized-double-blind-placebo-controlled-clinical-trial
#7
Michael Eberhardson, Stephen Hall, Kim A Papp, Tina M Sterling, Jon E Stek, Lei Pang, Yanli Zhao, Janie Parrino, Zoran Popmihajlov
Background: Immunogenicity and safety of inactivated zoster vaccine (ZVIN) were evaluated in adults with autoimmune disease. Methods: Adults with autoimmune disease treated with immunosuppressive therapy (biologic or nonbiologic) were randomized to receive 4 doses of ZVIN, ZVIN containing a higher quantity of antigen, or placebo. To measure varicella-zoster virus (VZV)-specific immune responses using glycoprotein enzyme-linked immunosorbent assay (gpELISA) and interferon-gamma enzyme-linked immunospot (IFN-γ ELISPOT), blood samples were collected at baseline, post-doses 2, 3, and 4...
October 1, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29126247/the-mycorrhizal-type-governs-root-exudation-and-nitrogen-uptake-of-temperate-tree-species
#8
Rebecca Liese, Torben Lübbe, Nora W Albers, Ina C Meier
Even though the two dominant mycorrhizal associations of temperate tree species differentially couple carbon (C) and nitrogen (N) cycles in temperate forests, systematic differences between the biogeochemical cycles of arbuscular mycorrhizal (AM) and ectomycorrhizal (ECM) tree species remain poorly described. A classification according to the mycorrhizal type offers the chance, though, to develop a global frame concept for the prediction of temperate ecosystem responses to environmental change. Focusing on the influence of mycorrhizal types on two key plant processes of biogeochemical cycling (root exudation and N acquisition), we investigated four temperate deciduous tree species per mycorrhizal type in a drought experiment in large mesocosms...
November 8, 2017: Tree Physiology
https://www.readbyqxmd.com/read/29124793/evidence-for-allosteric-effects-on-p53-oligomerization-induced-by-phosphorylation
#9
Petr Muller, Juliana M Chan, Oliver Simoncik, Miroslav Fojta, David P Lane, Ted Hupp, Borivoj Vojtesek
P53 is a tetrameric protein with a thermodynamically unstable DNA-binding domain flanked by intrinsically disordered regulatory domains that control its activity. The unstable and disordered segments of p53 allow high flexibility as it interacts with binding partners and permits a rapid on/off switch to control its function. The p53 tetramer can exist in multiple conformational states, any of which can be stabilized by a particular modification. Here, we apply the allostery model to p53 to ask whether evidence can be found that the "activating" C-terminal phosphorylation of p53 stabilizes a specific conformation of the protein in the absence of DNA...
November 10, 2017: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/29120861/preventing-relapse-to-smoking-with-transcranial-magnetic-stimulation-feasibility-and-potential-efficacy
#10
Christine E Sheffer, Warren K Bickel, Thomas H Brandon, Christopher T Franck, Darwin Deen, Luana Panissidi, Syed Amir Abdali, Jami C Pittman, Sara E Lunden, Neelam Prashad, Ria Malhotra, Antonio Mantovani
Many smokers attempt to quit every year, but 90% relapse within 12 months. Converging evidence suggests relapse is associated with insufficient activation of the prefrontal cortex. Delay discounting rate reflects relative activity in brain regions associated with relapse. High-frequency repetitive transcranial magnetic stimulation (rTMS) of the left dorsolateral prefrontal cortex (LDLPFC) increases cortical excitability and reduces delay discounting rates, but little is known about feasibility, tolerability, and potential efficacy for smoking cessation...
November 4, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29120578/role-of-cannabinoid-cb2-receptor-gene-cnr2-polymorphism-in-children-with-immune-thrombocytopenic-purpura-in-beni-suef-governorate-in-egypt
#11
Dina A Ezzat, Amira A Hammam, Waleed M El-Malah, Rasha A Khattab, Eman M Mangoud
The cannabinoid system is involved in the immune regulation by modulation of Th cells type 1 and 2. It is composed of the CB2 receptor which is expressed at 10 to 100 folds greater levels on immune cells than the CB1 receptors. The CB2 is encoded by the cannabinoid CB receptor gene (CNR2) gene. This study aims to investigate the polymorphism in CNR2 gene variation rs 35761398 (Q63R) in Egyptian children with immune thrombocytopenic purpura and to investigate the relation between this gene polymorphism and either the susceptibility to or the chronicity of the disease...
January 2017: Egyptian Journal of Immunology
https://www.readbyqxmd.com/read/29119969/tumor-targeting-efficacy-of-a-bf211-prodrug-through-hydrolysis-by-fibroblast-activation-protein-%C3%AE
#12
Xiao-Ping Chai, Guang-Long Sun, Yan-Fen Fang, Li-Hong Hu, Xuan Liu, Xiong-Wen Zhang
BF211, a bufalin (BF) derivative, exhibits stronger anti-cancer activity than BF but with potential cardiotoxicity. Fibroblast activation protein-α (FAPα) is a membrane-bound protease specifically expressed by carcinoma-associated fibroblasts, thus has been used for the selective delivery of anticancer agents. In this study, we used a FAPα-based prodrug strategy to synthesize a dipeptide (Z-Gly-Pro)-conjugated BF211 prodrug named BF211-03. BF211-03 was hydrolyzed by recombinant human FAPα (rhFAPα) and cleaved by homogenates of human colon cancer HCT-116 or human gastric cancer MGC-803 xenografts...
November 9, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/29119159/controlled-multimodal-hierarchically-porous-electrode-self-assembly-of-electrochemically-exfoliated-graphene-for-fully-solid-state-flexible-supercapacitor
#13
Nurlia P Sari, Dipak Dutta, Anif Jamaluddin, Jeng-Kuei Chang, Ching-Yuan Su
Supercapacitors constructed from three-dimensional (3D) graphene electrodes with high ion-accessible surface area and durable mechanical flexibility have great potential for wearable devices. For the development of a highly efficient graphene electrode for electrical double layer capacitors (EDLCs), proper control over not only the specific surface area but also the type of pore (macro-, meso- and micro-porous networks) adapted for an appropriate type of electrolyte is crucial to ensure an ideal performance in terms of both energy density and power delivery rate...
November 9, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29117179/a-mutation-in-the-viral-sensor-2-5-oligoadenylate-synthetase-2-causes-failure-of-lactation
#14
Samantha R Oakes, David Gallego-Ortega, Prudence M Stanford, Simon Junankar, Wendy Wing Yee Au, Zoya Kikhtyak, Anita von Korff, Claudio M Sergio, Andrew M K Law, Lesley E Castillo, Stephanie L Allerdice, Adelaide I J Young, Catherine Piggin, Belinda Whittle, Edward Bertram, Matthew J Naylor, Daniel L Roden, Jesse Donovan, Alexei Korennykh, Christopher C Goodnow, Moira K O'Bryan, Christopher J Ormandy
We identified a non-synonymous mutation in Oas2 (I405N), a sensor of viral double-stranded RNA, from an ENU-mutagenesis screen designed to discover new genes involved in mammary development. The mutation caused post-partum failure of lactation in healthy mice with otherwise normally developed mammary glands, characterized by greatly reduced milk protein synthesis coupled with epithelial cell death, inhibition of proliferation and a robust interferon response. Expression of mutant but not wild type Oas2 in cultured HC-11 or T47D mammary cells recapitulated the phenotypic and transcriptional effects observed in the mouse...
November 2017: PLoS Genetics
https://www.readbyqxmd.com/read/29113123/high-neonatal-blood-iron-content-is-associated-with-the-risk-of-childhood-type-1-diabetes-mellitus
#15
Julie Nyholm Kyvsgaard, Anne Julie Overgaard, Steffen Ullitz Thorsen, Thomas Hesselhøj Hansen, Christian Bressen Pipper, Henrik Bindesbøl Mortensen, Flemming Pociot, Jannet Svensson
(1) Background: Iron requirement increases during pregnancy and iron supplementation is therefore recommended in many countries. However, excessive iron intake may lead to destruction of pancreatic β-cells. Therefore, we aim to test if higher neonatal iron content in blood is associated with the risk of developing type 1 diabetes mellitus (T1D) in childhood; (2) Methods: A case-control study was conducted, including 199 children diagnosed with T1D before the age of 16 years from 1991 to 2005 and 199 controls matched on date of birth...
November 6, 2017: Nutrients
https://www.readbyqxmd.com/read/29109654/bilateral-vocal-fold-granulomas-following-double-lumen-endotracheal-tube-placement
#16
Sarang S Koushik, David G Lott, Harish Ramakrishna
No abstract text is available yet for this article.
July 2017: Journal of Anaesthesiology, Clinical Pharmacology
https://www.readbyqxmd.com/read/29105398/oral-quercetin-supplementation-enhances-adiponectin-receptor-transcript-expression-in-polycystic-ovary-syndrome-patients-a-randomized-placebo-controlled-double-blind-clinical-trial
#17
Neda Rezvan, Ashraf Moini, Sattar Gorgani-Firuzjaee, Mohammad Javad Hosseinzadeh-Attar
OBJECTIVES: Polycystic ovary syndrome (PCOS), an ovarian-pituitary axis androgen disorder, is a common endocrine disease in women. Obesity-induced androgenesis and imbalance of adipokine secretion may lead to some metabolic features of PCOS. The beneficial effects of polyphenolic compounds such as quercetin have been reported, however, the underlying molecular mechanism is not entirely understood. In the present study, we investigated the effect of quercetin supplementation on the expression of adiponectin receptors at the transcript level in peripheral blood mononuclear cells (PBMC) samples of PCOS patients...
January 2018: Cell Journal
https://www.readbyqxmd.com/read/29105157/reduced-numbers-of-mature-medullary-thymic-epithelial-cells-in-skg-mice
#18
Robby Engelmann, Andra Biemelt, Anja Johl, Daniela Kuthning, Brigitte Müller-Hilke
Attenuated T cell receptor (TCR) signaling contributes to the susceptibility for autoimmunity as shown via mutants of PTPN22 and Zap70 genes. We here set out to investigate the effect of an attenuated TCR signal on the composition of the thymic epithelial cell (TEC) compartment. To that extent, we combined flow cytometry and histology and compared the TEC subpopulations of Zap70 wild type with SKG mutant mice. We found an increased cortical TEC compartment in SKG thymi at the expense of reduced numbers of mature medullary TECs and a 4...
November 3, 2017: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/29104121/safety-efficacy-and-pharmacodynamics-of-vesatolimod-gs-9620-in-virally-suppressed-patients-with-chronic-hepatitis-b
#19
Harry L A Janssen, Maurizia R Brunetto, Yoon Jun Kim, Carlo Ferrari, Benedetta Massetto, Anh-Hoa Nguyen, Adarsh Joshi, Jacky Woo, Audrey H Lau, Anuj Gaggar, G Mani Subramanian, Eric M Yoshida, Sang Hoon Ahn, Naoky C S Tsai, Scott Fung, Edward J Gane
BACKGROUND & AIMS: Vesatolimod (GS-9620) is an oral agonist of toll-like receptor 7, an activator of innate and adaptive immune responses. Here the safety and efficacy of vesatolimod is assessed after once-weekly treatment in chronic hepatitis B (CHB) infected patients suppressed on oral antiviral treatment. METHODS: In a Phase 2, double-blind, randomized, placebo (PBO)-controlled study, 162 patients stratified by hepatitis B surface antigen (HBsAg) levels and serum HBeAg status were randomized 1:3:3:3 to once-weekly oral PBO or vesatolimod (1-, 2-, or 4-mg doses) for 4, 8 or 12 weeks per cohort and efficacy assessed by change in baseline HBsAg (log10 IU/mL) at the primary endpoint (Week 24)...
November 2, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/29100516/crispr-interference-guided-multiplex-repression-of-endogenous-competing-pathway-genes-for-redirecting-metabolic-flux-in-escherichia-coli
#20
Seong Keun Kim, Wonjae Seong, Gui Hwan Han, Dae-Hee Lee, Seung-Goo Lee
BACKGROUND: Multiplex control of metabolic pathway genes is essential for maximizing product titers and conversion yields of fuels, chemicals, and pharmaceuticals in metabolic engineering. To achieve this goal, artificial transcriptional regulators, such as clustered regularly interspaced short palindromic repeats (CRISPR) interference (CRISPRi), have been developed to specifically repress genes of interest. RESULTS: In this study, we deployed a tunable CRISPRi system for multiplex repression of competing pathway genes and, thus, directed carbon flux toward production of molecules of interest in Escherichia coli...
November 3, 2017: Microbial Cell Factories
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