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https://www.readbyqxmd.com/read/28443084/gene-expression-profiling-of-transcription-factors-of-helicobacter-pylori-under-different-environmental-conditions
#1
Miguel A De la Cruz, Miguel A Ares, Kristine von Bargen, Leonardo G Panunzi, Jessica Martínez-Cruz, Hilda A Valdez-Salazar, César Jiménez-Galicia, Javier Torres
Helicobacter pylori is a Gram-negative bacterium that colonizes the human gastric mucosa and causes peptic ulcers and gastric carcinoma. H. pylori strain 26695 has a small genome (1.67 Mb), which codes for few known transcriptional regulators that control bacterial metabolism and virulence. We analyzed by qRT-PCR the expression of 16 transcriptional regulators in H. pylori 26695, including the three sigma factors under different environmental conditions. When bacteria were exposed to acidic pH, urea, nickel, or iron, the sigma factors were differentially expressed with a particularly strong induction of fliA...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28410614/factors-associated-with-high-utilization-in-a-safety-net-setting
#2
Julia Bell, Sara Turbow, Maura George, Mohammed K Ali
BACKGROUND: Patients with frequent hospital readmissions, or high-utilizer patients (HUPs), are a major driver of rising healthcare costs in the United States. This group has a significant burden of medical illness, but less is known about whether or how social determinants of health may drive their increased healthcare use and poor health outcomes. Our study aimed to define the population of HUPs at a large, safety-net hospital system, to understand how these patients differ from patients who are not HUPs, and to analyze how their demographic, medical, and social factors contribute to their healthcare use and mortality rates...
April 14, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28406297/binding-analysis-of-some-classical-acetylcholinesterase-inhibitors-insights-for-a-rational-design-using-free-energy-perturbation-method-calculations-with-qm-mm-md-simulations
#3
Érica C M Nascimento, Mónica Oliva, Katarzyna Świderek, João B L Martins, Juan Andrés
In the present study, the binding free energy of some classical inhibitors (DMT, DNP, GNT, HUP, THA) with acetylcholinesterase (AChE) is calculated by means of the free energy perturbation (FEP) method based on hybrid quantum mechanics and molecular mechanics (QM/MM) potentials. The results highlight the key role of the van der Waals interaction for the inhibition process, since the contribution of this term to the binding free energy is almost as decisive as the electrostatic one. The analysis of the geometrical parameters and the interaction energy per residue along the QM/MM molecular dynamics (MD) simulations highlights the most relevant interactions in the different AChE-ligand systems, showing that the charged residues with a more prominent contribution to the interaction energy are Asp72 and Glu199, although the relative importance depends on the molecular size of the ligand...
April 24, 2017: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/28361951/qualitative-and-quantitative-imaging-evaluation-of-renal-cell-carcinoma-subtypes-with-grating-based-x-ray-phase-contrast-ct
#4
Margarita Braunagel, Lorenz Birnbacher, Marian Willner, Mathias Marschner, Fabio De Marco, Manuel Viermetz, Susan Notohamiprodjo, Katharina Hellbach, Sigrid Auweter, Vera Link, Christine Woischke, Maximilian F Reiser, Franz Pfeiffer, Mike Notohamiprodjo, Julia Herzen
Current clinical imaging methods face limitations in the detection and correct characterization of different subtypes of renal cell carcinoma (RCC), while these are important for therapy and prognosis. The present study evaluates the potential of grating-based X-ray phase-contrast computed tomography (gbPC-CT) for visualization and characterization of human RCC subtypes. The imaging results for 23 ex vivo formalin-fixed human kidney specimens obtained with phase-contrast CT were compared to the results of the absorption-based CT (gbCT), clinical CT and a 3T MRI and validated using histology...
March 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28333342/activity-of-faropenem-with-and-without-rifampicin-against-mycobacterium-tuberculosis-evaluation-in-a-whole-blood-bactericidal-activity-trial
#5
Meera Gurumurthy, Rupangi Verma, Claire M Naftalin, Kim Hor Hee, Qingshu Lu, Kin Hup Tan, Simi Issac, Wenwei Lin, Angelia Tan, Kok-Yong Seng, Lawrence Soon-U Lee, Nicholas I Paton
Background: Faropenem has in vitro activity against Mycobacterium tuberculosis (Mtb) and shows synergy with rifampicin. We tested this in a whole-blood bactericidal activity (WBA) trial. Methods: We randomized healthy volunteers to receive a single oral dose of faropenem (600 mg) with amoxicillin/clavulanic acid (500/125 mg) ( n  =   8), rifampicin (10 mg/kg) ( n  =   14) or the combination rifampicin + faropenem + amoxicillin/clavulanic acid ( n  =   14)...
March 18, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28244177/the-histone-like-protein-hu-has-a-role-in-gene-expression-during-the-acid-adaptation-response-in-helicobacter-pylori
#6
Alhejandra Álvarez, Héctor Toledo
BACKGROUND: Gastritis, ulcers, and gastric malignancy have been linked to human gastric epithelial colonization by Helicobacter pylori. Characterization of the mechanisms by which H. pylori adapts to the human stomach environment is of crucial importance to understand H. pylori pathogenesis. MATERIAL AND METHODS: In an effort to extend our knowledge of these mechanisms, we used proteomic analysis and qRT-PCR to characterize the role of the histone-like protein HU in the response of H...
February 28, 2017: Helicobacter
https://www.readbyqxmd.com/read/28241851/treatment-of-atopic-eczema-treat-registry-taskforce-protocol-for-an-international-delphi-exercise-to-identify-a-core-set-of-domains-and-domain-items-for-national-atopic-eczema-registries
#7
Louise A A Gerbens, Aaron E Boyce, Dmitri Wall, Sebastien Barbarot, Richard J de Booij, Mette Deleuran, Maritza A Middelkamp-Hup, Amanda Roberts, Christian Vestergaard, Stephan Weidinger, Christian J Apfelbacher, Alan D Irvine, Jochen Schmitt, Paula R Williamson, Phyllis I Spuls, Carsten Flohr
BACKGROUND: Patients with moderate-to-severe atopic eczema (AE) often require photo- or systemic immunomodulatory therapies to induce disease remission and maintain long-term control. The current evidence to guide clinical management is small, despite the frequent and often off-label use of these treatments. Registries of patients on photo- and systemic immunomodulatory therapies could fill this gap, and the collection of a core set concerning these therapies in AE will allow direct comparisons across registries as well as data sharing and pooling...
February 27, 2017: Trials
https://www.readbyqxmd.com/read/28027773/ex-vivo-characterization-of-pathologic-fluids-with-quantitative-phase-contrast-computed-tomography
#8
Vivien Richter, Marian S Willner, John Henningsen, Lorenz Birnbacher, Mathias Marschner, Julia Herzen, Melanie A Kimm, Peter B Noe L, Ernst J Rummeny, Franz Pfeiffer, Alexander A Fingerle
PURPOSE: X-ray phase-contrast imaging (PCI) provides additional information beyond absorption characteristics by detecting the phase shift of the X-ray beam passing through material. The grating-based system works with standard polychromatic X-ray sources, promising a possible clinical implementation. PCI has been shown to provide additional information in soft-tissue samples. The aim of this study was to determine if ex vivo quantitative phase-contrast computed tomography (PCCT) may differentiate between pathologic fluid collections...
January 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28000019/long-term-biological-hydrogen-production-by-agar-immobilized-rhodobacter-capsulatus-in-a-sequential-batch-photobioreactor
#9
Kamal Elkahlout, Siamak Alipour, Inci Eroglu, Ufuk Gunduz, Meral Yucel
In this study, agar immobilization technique was employed for biological hydrogen production using Rhodobacter capsulatus DSM 1710 (wild type) and YO3 (hup-mutant) strains in sequential batch process. Different agar and glutamate concentrations were tested with defined nutrient medium. Agar concentration 4% (w/v) and 4 mM glutamate were selected for bacterial immobilization in terms of rate and longevity of hydrogen production. Acetate concentration was increased from 40 to 60-100 and 60 mM gave best results with both bacterial strains immobilized in 4% (w/v) agar...
April 2017: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/27969518/ps01-51-the-impact-of-pet-staging-and-molecular-profiling-on-the-radiotherapy-outcomes-of-primary-lung-adenocarcinoma-topic-radiation-oncology
#10
Brendan Seng Hup Chia, Kevin Lee Min Chua, W L Ng, S P Yap, A Thiagarajan, T R Siow, S P C Yip, Kam Weng Fong
No abstract text is available yet for this article.
November 2016: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/27935590/methylacidiphilum-fumariolicum-solv-a-thermoacidophilic-knallgas-methanotroph-with-both-an-oxygen-sensitive-and-insensitive-hydrogenase
#11
Sepehr Mohammadi, Arjan Pol, Theo A van Alen, Mike Sm Jetten, Huub Jm Op den Camp
Methanotrophs play a key role in balancing the atmospheric methane concentration. Recently, the microbial methanotrophic diversity was extended by the discovery of thermoacidophilic methanotrophs belonging to the Verrucomicrobia phylum in geothermal areas. Here we show that a representative of this new group, Methylacidiphilum fumariolicum SolV, is able to grow as a real 'Knallgas' bacterium on hydrogen/carbon dioxide, without addition of methane. The full genome of strain SolV revealed the presence of two hydrogen uptake hydrogenases genes, encoding an oxygen-sensitive (hup-type) and an oxygen-insensitive enzyme (hhy-type)...
April 2017: ISME Journal
https://www.readbyqxmd.com/read/27902574/analysis-of-hospital-readmission-patterns-in-medicare-fee-for-service-and-medicare-advantage-beneficiaries
#12
Joobong June Park Oh
PURPOSE OF STUDY: The study was conducted to examine the hospital readmission patterns of two groups of Medicare beneficiaries-those covered by traditional Medicare (Medicare fee-for-service [FFS]) and those enrolled in a Medicare risk plan (Medicare Advantage [MA])-and to determine the characteristics that significantly increase the likelihood of multiple hospital readmissions. PRIMARY PRACTICE SETTING: The study setting is the Hospital of the University of Pennsylvania (HUP) located in Philadelphia, PA...
January 2017: Professional Case Management
https://www.readbyqxmd.com/read/27898389/half-unit-insulin-pens-disease-management-in-patients-with-diabetes-who-are-sensitive-to-insulin
#13
REVIEW
David C Klonoff, Irina Nayberg, Udo Stauder, Hamid Oualali, Catherine Domenger
BACKGROUND: Insulin pens represent a significant technological advancement in diabetes management. While the vast majority have been designed with 1U-dosing increments, improved accuracy and precision facilitated by half-unit increments may be particularly significant in specific patients who are sensitive to insulin. These include patients with low insulin requirements and in those requiring more precise dose adjustments, such as the pediatric patient population. This review summarized functional characteristics of insulin half-unit pens (HUPs) and their effect on user experience...
November 27, 2016: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/27861990/contact-sensitization-in-dutch-children-and-adolescents-with-and-without-atopic-dermatitis%C3%A2-%C3%A2-a-retrospective-analysis
#14
Stefanie Lubbes, Thomas Rustemeyer, Johannes H Sillevis Smitt, Marie-Louise A Schuttelaar, Maritza A Middelkamp-Hup
BACKGROUND: Allergic contact dermatitis is known to occur in children with and without atopic dermatitis, but more data are needed on contact sensitization profiles in these two groups. OBJECTIVES: To identify frequent allergens in children with and without atopic dermatitis suspected of having allergic contact dermatitis. METHODS: A retrospective analysis of children aged 0-17 years patch tested between 1996 and 2013 was performed. RESULTS: Of all 1012 children tested because of suspected contact dermatitis, 46% developed one or more positive reactions, the proportions for children with (n = 526) and without (n = 395) atopic dermatitis being 48% and 47%, respectively...
November 11, 2016: Contact Dermatitis
https://www.readbyqxmd.com/read/27829029/inferring-gene-networks-for-strains-of-dehalococcoides-highlights-conserved-relationships-between-genes-encoding-core-catabolic-and-cell-wall-structural-proteins
#15
Cresten B Mansfeldt, Gretchen W Heavner, Annette R Rowe, Boris Hayete, Bruce W Church, Ruth E Richardson
The interpretation of high-throughput gene expression data for non-model microorganisms remains obscured because of the high fraction of hypothetical genes and the limited number of methods for the robust inference of gene networks. Therefore, to elucidate gene-gene and gene-condition linkages in the bioremediation-important genus Dehalococcoides, we applied a Bayesian inference strategy called Reverse Engineering/Forward Simulation (REFS™) on transcriptomic data collected from two organohalide-respiring communities containing different Dehalococcoides mccartyi strains: the Cornell University mixed community D2 and the commercially available KB-1® bioaugmentation culture...
2016: PloS One
https://www.readbyqxmd.com/read/27799911/huperzine-a-provides-robust-and-sustained-protection-against-induced-seizures-in-scn1a-mutant-mice
#16
Jennifer C Wong, Stacey B B Dutton, Stephen D Collins, Steven Schachter, Andrew Escayg
De novo loss-of-function mutations in the voltage-gated sodium channel (VGSC) SCN1A (encoding Nav1.1) are the main cause of Dravet syndrome (DS), a catastrophic early-life encephalopathy associated with prolonged and recurrent early-life febrile seizures (FSs), refractory afebrile epilepsy, cognitive and behavioral deficits, and a 15-20% mortality rate. SCN1A mutations also lead to genetic epilepsy with febrile seizures plus (GEFS+), which is an inherited disorder characterized by early-life FSs and the development of a range of adult epilepsy subtypes...
2016: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/27794507/a-novel-survey-of-the-ethno-medicinal-knowledge-of-dental-problems-in-manoor-valley-northern-himalaya-pakistan
#17
Inayat Ur Rahman, Farhana Ijaz, Zafar Iqbal, Aftab Afzal, Niaz Ali, Muhammad Afzal, Muhammad Azhar Khan, Said Muhammad, Ghulam Qadir, Muhammad Asif
ETHNOPHARMACOLOGICAL RELEVANCE: In the study area, the traditional knowledge and cultural practices of utilizing medicinal plants in the human healthcare is primarily restricted to the old age members of the community, while younger generation is mostly unaware of the natural wealth usage. AIM OF THE STUDY: We provide the first ever ethno medicinal insights into the management of dental disorders in Pakistan. The prime objective of the study was to explore novel knowledge of these local and remote community members and share it with rest of the world in documented form...
December 24, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27784279/developmental-transcriptome-of-resting-cell-formation-in-mycobacterium-smegmatis
#18
Mu-Lu Wu, Martin Gengenbacher, Jade C S Chung, Swaine Lin Chen, Hans-Joachim Mollenkopf, Stefan H E Kaufmann, Thomas Dick
BACKGROUND: Mycobacteria, along with exospore forming Streptomyces, belong to the phylum actinobacteria. Mycobacteria are generally believed to be non-differentiating. Recently however, we showed that the mycobacterial model organism M. smegmatis is capable of forming different types of morphologically distinct resting cells. When subjected to starvation conditions, cells of M. smegmatis exit from the canonical cell division cycle, segregate and compact their chromosomes, and become septated and multi-nucleoided...
October 26, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27717648/phenotypic-characteristics-and-comparative-proteomics-of-staphylococcus-aureus-strains-with-different-vancomycin-resistance-levels
#19
Auttawit Sirichoat, Aroonlug Lulitanond, Rattiyaporn Kanlaya, Ratree Tavichakorntrakool, Aroonwadee Chanawong, Sujintana Wongthong, Visith Thongboonkerd
Reduced vancomycin susceptibility of methicillin-resistant Staphylococcus aureus (MRSA) is a worldwide problem. Unfortunately, its genetic marker and molecular mechanisms remained unknown. This study investigated differential phenotypic characteristic and protein expression profiles among three groups of MRSA isolates, including vancomycin-susceptible S. aureus (VSSA), heterogeneous vancomycin-intermediate S. aureus (hVISA) and vancomycin-intermediate S. aureus (VISA) (n = 7 isolates/group). Phenotypic characteristic revealed significant greater number of isolates with non-spreading colony in VISA as compared to both VSSA and hVISA groups...
December 2016: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/27353866/contributions-to-the-phytotherapies-of-digestive-disorders-traditional-knowledge-and-cultural-drivers-of-manoor-valley-northern-pakistan
#20
Inayat Ur Rahman, Farhana Ijaz, Aftab Afzal, Zafar Iqbal, Niaz Ali, Shujaul Mulk Khan
ETHNO PHARMACOLOGICAL RELEVANCE: Ethno medicinal traditional knowledge regarding the uses of indigenous medicinal plants used for various human digestive disorders are mostly known to the elder community members. As the young generation is not much aware about such vital traditional medicinal practice because they rely on elders. AIM OF STUDY: To document, accumulate and widely disseminate the massive indigenous knowledge of century's practiced therapeutic uses of medicinal plants by the local people living in this remote area...
November 4, 2016: Journal of Ethnopharmacology
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