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https://www.readbyqxmd.com/read/28645157/secretory-iga-response-against-pseudomonas-aeruginosa-in-the-upper-airways-and-the-link-with-chronic-lung-infection-in-cystic-fibrosis
#1
Renan Mauch, Claudio Rossi, Talita Aiello, José Ribeiro, Antonio Ribeiro, Niels Høiby, Carlos Levy
We assessed the diagnostic ability of an ELISA test for measurement of specific secretory IgA (sIgA) in saliva to identify Cystic Fibrosis (CF) patients with P. aeruginosa chronic lung infection and intermittent lung colonization. A total of 102 Brazilian CF patients and 53 healthy controls were included. Specific serum IgG response was used as a surrogate to distinguish CF patients according to their P. aeruginosa colonization/infection status. The rate of sIgA positivity was 87.1% in CF chronically infected patients (Median value = 181...
June 22, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28645088/risk-based-screening-combined-with-a-pcr-based-test-for-group-b-streptococci-diminishes-the-use-of-antibiotics-in-laboring-women
#2
Mohammed R Khalil, Niels Uldbjerg, Poul B Thorsen, Birgitte Henriksen, Jens K Møller
OBJECTIVE: To assess the performance of a polymerase chain reaction - group B streptococci test (PCR-GBS test) - in deciding antibiotic prophylaxis in term laboring women. STUDY DESIGN: In this observational study, we enrolled 902 unselected Danish term pregnant women. During labor, midwives obtained vaginal swabs that were used for both GBS cultures (reference standard) and for the PCR-GBS test. Furthermore, we recorded the presence of risk factors for EOGBS (Early Onset Group B Streptococcal disease): (1) Bacteriuria during current pregnancy, (2) Prior infant with EOGBS (3) Temperature above 38...
June 9, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28640228/development-and-validation-of-a-high-throughput-mass-spectrometry-based-urine-metabolomic-test-for-the-detection-of-colonic-adenomatous-polyps
#3
Lu Deng, David Chang, Rae R Foshaug, Roman Eisner, Victor K Tso, David S Wishart, Richard N Fedorak
Background: Colorectal cancer is one of the leading causes of cancer deaths worldwide. The detection and removal of the precursors to colorectal cancer, adenomatous polyps, is the key for screening. The aim of this study was to develop a clinically scalable (high throughput, low cost, and high sensitivity) mass spectrometry (MS)-based urine metabolomic test for the detection of adenomatous polyps. Methods: Prospective urine and stool samples were collected from 685 participants enrolled in a colorectal cancer screening program to undergo colonoscopy examination...
June 22, 2017: Metabolites
https://www.readbyqxmd.com/read/28639165/molecular-characterization-of-intestinal-carriage-of-carbapenem-resistant-enterobacteriaceae-among-inpatients-at-two-iranian-university-hospitals-first-report-of-co-production-of-bla-ndm-7-and-bla-oxa-48
#4
H Solgi, F Badmasti, Z Aminzadeh, C G Giske, M Pourahmad, F Vaziri, S A Havaei, F Shahcheraghi
Gastrointestinal colonization of carbapenem-resistant Enterobacteriaceae (CRE) could serve as a reservoir for the transmission of these pathogens in the clinical setting. The aim of this study was to investigate the intestinal carriage of CRE and to analyze risk factors for CRE carriage. Rectal swabs were collected from 95 patients at two Iranian university hospitals. CRE screening was performed using selective media (CHROMagar and MacConkey agar). Polymerase chain reaction (PCR) was used to detect carbapenemase-encoding genes...
June 21, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28638218/new-endoscopes-and-add-on-devices-to-improve-colonoscopy-performance
#5
REVIEW
Paraskevas Gkolfakis, Georgios Tziatzios, George D Dimitriadis, Konstantinos Triantafyllou
Colonoscopy is the gold standard for colorectal cancer prevention; however, it is still an imperfect modality. Precancerous lesions can be lost during screening examinations, thus increasing the risk of interval cancer. A variety of factors either patient-, or endoscopist dependent or even the procedure itself may contribute to loss of lesions. Sophisticated modalities including advanced technology endoscopes and add-on devices have been developed in an effort to eliminate colonoscopy's drawbacks and maximize its ability to detect potentially culprit polyps...
June 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28634238/electron-transport-chain-is-biochemically-linked-to-pilus-assembly-required-for-polymicrobial-interactions-and-biofilm-formation-in-the-gram-positive-actinobacterium-actinomyces-oris
#6
Belkys C Sanchez, Chungyu Chang, Chenggang Wu, Bryan Tran, Hung Ton-That
The Gram-positive actinobacteria Actinomyces spp. are key colonizers in the development of oral biofilms due to the inherent ability of Actinomyces to adhere to receptor polysaccharides on the surface of oral streptococci and host cells. This receptor-dependent bacterial interaction, or coaggregation, requires a unique sortase-catalyzed pilus consisting of the pilus shaft FimA and the coaggregation factor CafA forming the pilus tip. While the essential role of the sortase machine SrtC2 in pilus assembly, biofilm formation, and coaggregation has been established, little is known about trans-acting factors contributing to these processes...
June 20, 2017: MBio
https://www.readbyqxmd.com/read/28633864/perinatal-group-b-streptococcal-infections-virulence-factors-immunity-and-prevention-strategies
#7
REVIEW
Jay Vornhagen, Kristina M Adams Waldorf, Lakshmi Rajagopal
Group B streptococcus (GBS) or Streptococcus agalactiae is a β-hemolytic, Gram-positive bacterium that is a leading cause of neonatal infections. GBS commonly colonizes the lower gastrointestinal and genital tracts and, during pregnancy, neonates are at risk of infection. Although intrapartum antibiotic prophylaxis during labor and delivery has decreased the incidence of early-onset neonatal infection, these measures do not prevent ascending infection that can occur earlier in pregnancy leading to preterm births, stillbirths, or late-onset neonatal infections...
June 17, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28633725/well-differentiated-neuroendocrine-tumor-a-low-b-grade-tumor-s-aggressive-course-and-dismal-outcome-a-case-report
#8
Dinesh Atwal, Krishna Prasad Joshi, Susanne Jeffus, James Ntambi, Fade Mahmoud
INTRODUCTION: Incidence of well-differentiated neuroendocrine tumors (NETs) of the colon and rectum is increasing and is now approximately 1 per 100,000 in the US. NETs are either well-differentiated (indolent) or poorly differentiated (aggressive). The majority of these tumors are found incidentally during screening colonoscopies and rarely are associated with symptoms of hormonal syndrome, even during the advanced stage. Metastatic well-differentiated NETs of the colon and rectum are incurable, hard to treat, and associated with a poor prognosis and survival rates similar to colorectal adenocarcinoma survival...
2017: Permanente Journal
https://www.readbyqxmd.com/read/28633496/clinical-sensitivity-and-specificity-of-the-check-points-check-direct-esbl-screen-for-bd-max-a-real-time-pcr-for-direct-esbl-detection-from-rectal-swabs
#9
Dennis Souverein, Sjoerd M Euser, Wil A van der Reijden, Bjorn L Herpers, Jan Kluytmans, John W A Rossen, Jeroen W Den Boer
Objectives: To determine the diagnostic accuracy of the Check-Direct ESBL Screen for BD MAX (ESBL qPCR) and an ESBL culture method to identify ESBLs directly from rectal swabs. Methods: Rectal swabs were obtained from clinical patients by performing cross-sectional (point)prevalence measurements in three regional hospitals. Rectal swabs were analysed by direct culture (ChromID ESBL agar) and with the ESBL qPCR. Suspected ESBL-producing isolates were confirmed with the combination disc method and analysed by WGS...
June 19, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28632312/association-of-coloproctology-of-great-britain-ireland-acpgbi-guidelines-for-the-management-of-cancer-of-the-colon-rectum-and-anus-2017-diagnosis-investigations-and-screening
#10
Chris Cunningham, Kai Leong, Susan Clark, Andrew Plumb, Stuart Taylor, Ian Geh, Sharad Karandikar, Brendan Moran
No abstract text is available yet for this article.
July 2017: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
https://www.readbyqxmd.com/read/28630686/fecal-carriage-of-extended-spectrum-%C3%AE-lactamase-and-carbapenemase-producing-enterobacteriaceae-in-egyptian-patients-with-community-onset-gastrointestinal-complaints-a-hospital-based-cross-sectional-study
#11
H M Abdallah, N Alnaiemi, E A Reuland, B B Wintermans, A Koek, A M Abdelwahab, A Samy, K W Abdelsalam, C M J E Vandenbroucke-Grauls
OBJECTIVES: The aim of this study was to determine the prevalence of extended-spectrum β-lactamase (ESBL) and carbapenemase production among Enterobacteriaceae isolated from ambulatory patients with gastrointestinal complaints admitted to El-Ahrar General Hospital, Zagazig, Egypt in the period between January 2013 and May 2013. METHODS: One hundred and thirteen Enterobacteriaceae isolates were recovered from 100 consecutive Egyptian patients with community-onset gastrointestinal complaints...
2017: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/28630074/the-enterohaemorrhagic-escherichia-coli-effector-espw-triggers-actin-remodeling-in-a-rac1-dependent-manner
#12
Pamela Sandu, Valerie F Crepin, Hauke Drechsler, Andrew D McAinsh, Gad Frankel, Cedric N Berger
Enterohaemorrhagic Escherichia coli (EHEC) is a diarrheagenic pathogen that colonizes the gut mucosa and induces attaching-and-effacing lesions. EHEC employs a type III secretion system (T3SS) to translocate 50 effector proteins that hijack and manipulate host cell signalling pathways, which allow bacterial colonization, subversion of immune responses and disease progression. The aim of this study was to characterize the T3SS effector EspW. We found espW in the sequenced O157:H7 and non-O157 EHEC strains as well as in Shigella boydii Furthermore, a truncated version of EspW, containing the first 206 residues is present in EPEC strains belonging to serotype O55:H7...
June 19, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28629753/active-identification-of-patients-who-are-methicillin-resistant-staphylococcus-aureus-colonized-is-not-associated-with-longer-duration-of-vancomycin-therapy
#13
Carlos Acuna-Villaorduna, Westyn Branch-Elliman, Judith Strymish, Kalpana Gupta
BACKGROUND: Excessive prescribing of vancomycin among patients admitted to inpatient wards is a challenge for antimicrobial stewardship programs, especially in the setting of expanded screening programs for methicillin-resistant Staphylococcus aureus (MRSA). Studies examining factors associated with longer duration of vancomycin use are limited. METHODS: We conducted a retrospective cohort study to assess the impact of universal MRSA admission screening on duration of vancomycin use at the VA Boston Healthcare System during the period from January 2013-November 2015...
June 16, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28629348/applying-the-plan-do-study-act-pdsa-approach-to-a-large-pragmatic-study-involving-safety-net-clinics
#14
Jennifer Coury, Jennifer L Schneider, Jennifer S Rivelli, Amanda F Petrik, Evelyn Seibel, Brieshon D'Agostini, Stephen H Taplin, Beverly B Green, Gloria D Coronado
BACKGROUND: The Plan-Do-Study-Act (PDSA) cycle is a commonly used improvement process in health care settings, although its documented use in pragmatic clinical research is rare. A recent pragmatic clinical research study, called the Strategies and Opportunities to STOP Colon Cancer in Priority Populations (STOP CRC), used this process to optimize the research implementation of an automated colon cancer screening outreach program in intervention clinics. We describe the process of using this PDSA approach, the selection of PDSA topics by clinic leaders, and project leaders' reactions to using PDSA in pragmatic research...
June 19, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28627551/gold-loaded-nanoporous-iron-oxide-nanocubes-a-novel-dispersible-capture-agent-for-tumor-associated-autoantibody-analysis-in-serum
#15
Sharda Yadav, Mostafa Kamal Masud, Md Nazmul Islam, Vinod Gopalan, Alfred King-Yin Lam, Shunsuke Tanaka, Nam-Trung Nguyen, Md Shahriar Al Hossain, Cuiling Li, Md Yusuke Yamauchi, Muhammad J A Shiddiky
Autoantibodies are produced against tumor associated antigens (TAAs) long before the appearance of any symptoms and thus can serve as promising, non-invasive biomarkers for early diagnosis of cancer. Current conventional methods for autoantibody detection are highly invasive and mostly provide diagnosis in the later stages of cancer. Herein we report a new electrochemical method for early detection of p53 autoantibodies against colon cancer using a strategy that combines the strength of gold-loaded nanoporous iron oxide nanocube (Au@NPFe2O3NC)-based capture and purification while incorporating the inherent simplicity, inexpensive, and portable nature of the electrochemical and naked-eye colorimetric readouts...
June 19, 2017: Nanoscale
https://www.readbyqxmd.com/read/28626741/isolation-and-identification-of-two-phenolic-compounds-from-a-moderately-cytotoxic-fraction-of-cousinia-verbascifolia-bunge
#16
Seyed Ebrahim Sajjadi, Mustafa Ghanadian, Mehrangiz Haghighi
BACKGROUND: Little information is available about chemical components of the Cousinia genus. A primary cytotoxicity screening on Cousinia verbascifolia showed moderate cytotoxic activity against OVCAR-3 ovarian and HT-29 colon cancer cells. Therefore, the aim of this study is a phytochemical investigation to identify the compounds responsible for this bioactivity. MATERIALS AND METHODS: Extraction was done through percolation and fractionations by reverse phase column chromatography and normal column chromatography...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28626736/enterococcus-spp-and-s-aureus-colonization-in-neutropenic-febrile-children-with-cancer
#17
Julia R Spinardi, Rodrigo Berea, Patricia A Orioli, Marina M Gabriele, Alessandra Navarini, Marina T Marques, Milton N Neto, Marcelo J Mimica
INTRODUCTION: Febrile neutropenia is one of the most serious treatment-related complications in cancer patients. Susceptible to rapidly progressing infections, which result in prolonged hospitalization and use of broad-spectrum antibiotics, neutropenic patients are subject to colonization by multiresistant agents, which enhances the risk of infections. METHODS: In this study we included samples collected with nasal, oropharyngeal and anal swabs from hospitalized children with febrile neutropenia following chemotherapy, between March 2014 and 2015, aiming to elucidate colonization by S...
June 2017: Germs
https://www.readbyqxmd.com/read/28621634/the-utility-of-screening-colonoscopy-during-kidney-transplant-evaluation
#18
Yu Zheng, Kevin V Chaung, Paul J Park, Joshua J Augustine, Nagaraju Sarabu, James A Schulak, Edmund Q Sanchez, Vanessa R Humphreville, John B Ammori, Kenneth J Woodside
OBJECTIVES: Transplant centers often recommend, but not necessarily require, screening colonoscopies for people over 50 years of age in accordance with the US Preventative Services Task Force guidelines for the general population. We sought to identify risk factors affecting colonoscopy results in renal failure patients undergoing kidney transplant evaluation. MATERIALS AND METHODS: We retrospectively examined patients undergoing kidney transplant evaluation from 2009 to 2012 (n = 469 patients)...
June 16, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28618121/specificity-traits-consistent-with-legume-rhizobia-coevolution-displayed-by-ensifer-meliloti-rhizosphere-colonization
#19
María Eugenia Salas, Mauricio Javier Lozano, José Luis López, Walter Draghi, Javier Serrania, Gonzalo Arturo Torres Tejerizo, Francisco Javier Albicoro, Juliet Fernanda Nilsson, Mariano Pistorio, María Florencia Del Papa, Gustavo Parisi, Anke Becker, Antonio Lagares
Rhizobia are α- and ß-Proteobacteria that associate with legumes in symbiosis to fix atmospheric nitrogen. The chemical communication between roots and rhizobia begins in the rhizosphere. Using signature-tagged-Tn5 mutagenesis (STM) we performed a genome-wide screening for Ensifer meliloti genes that participate in colonizing the rhizospheres of alfalfa and other legumes. The analysis of ca. 6,000 mutants indicated that genes relevant for rhizosphere colonization account for nearly 2% of the rhizobial genome and that most (ca...
June 15, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28616471/methicillin-resistant-staphylococcus-aureus-from-infections-in-horses-in-germany-are-frequent-colonizers-of-veterinarians-but-rare-among-mrsa-from-infections-in-humans
#20
Christiane Cuny, Mohamed M H Abdelbary, Robin Köck, Franziska Layer, Wolfgang Scheidemann, Guido Werner, Wolfgang Witte
A total of 272 methicillin-resistant Staphylococcus aureus (MRSA) from equine infections originating from 17 equine hospitals and 39 veterinary practices in Germany as well as 67 isolates from personnel working at equine clinics were subjected to molecular typing. The majority of isolates from horses was attributed to clonal complex (CC) 398 (82.7%). Within CC398, 66% of isolates belonged to a subpopulation (clade) of CC398, which is associated with equine clinics. MRSA attributed to CC8 (ST254, t009, t036, SCCmecIV; ST8, t064, SCCmecIV) were less frequent (16...
December 2016: One Health
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