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Clostridium difficile AND PCR

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https://www.readbyqxmd.com/read/28813492/point-prevalence-survey-of-healthcare-facility-onset-healthcare-associated-clostridium-difficile-infection-in-greek-hospitals-outside-the-intensive-care-unit-the-c-define-study
#1
Athanasios Skoutelis, Angelos Pefanis, Sotirios Tsiodras, Nikolaos V Sipsas, Moyssis Lelekis, Marios C Lazanas, Panagiotis Gargalianos, George N Dalekos, Emmanuel Roilides, George Samonis, Efstratios Maltezos, Dimitrios Hatzigeorgiou, Malvina Lada, Symeon Metallidis, Athena Stoupis, Georgios Chrysos, Lazaros Karnesis, Styliani Symbardi, Chariclia V Loupa, Helen Giamarellou, Ioannis Kioumis, Helen Sambatakou, Epameinondas Tsianos, Maria Kotsopoulou, Areti Georgopali, Klairi Liakou, Stavroula Perlorentzou, Stamatina Levidiotou, Marina Giotsa-Toutouza, Helen Tsorlini-Christoforidou, Ilias Karaiskos, Georgia Kouppari, Eleftheria Trikka-Graphakos, Maria-Anna Ntrivala, Kate Themeli-Digalaki, Anastasia Pangalis, Melina Kachrimanidou, Maria Martsoukou, Stergios Karapsias, Maria Panopoulou, Sofia Maraki, Anagnostina Orfanou, Efthymia Petinaki, Maria Orfanidou, Vasiliki Baka, Antonios Stylianakis, Iris Spiliopoulou, Stavroula Smilakou, Loukia Zerva, Evangelos Vogiatzakis, Eleni Belesiotou, Charalambos A Gogos
BACKGROUND: The correlation of Clostridium difficile infection (CDI) with in-hospital morbidity is important in hospital settings where broad-spectrum antimicrobial agents are routinely used, such as in Greece. The C. DEFINE study aimed to assess point-prevalence of CDI in Greece during two study periods in 2013. METHODS: There were two study periods consisting of a single day in March and another in October 2013. Stool samples from all patients hospitalized outside the ICU aged ≥18 years old with diarrhea on each day in 21 and 25 hospitals, respectively, were tested for CDI...
2017: PloS One
https://www.readbyqxmd.com/read/28811244/comparison-of-the-clinical-course-of-clostridium-difficile-infection-in-gdh-positive-toxin-negative-patients-diagnosed-by-pcr-to-those-with-a-positive-toxin-test
#2
Julia Origüen, Laura Corbella, María Ángeles Orellana, Mario Fernández-Ruiz, Francisco López-Medrano, Rafael San Juan, Manuel Lizasoain, Tamara Ruiz-Merlo, Alejandra Morales-Cartagena, Guillermo Maestro, Patricia Parra, Jennifer Villa, Rafael Delgado, José María Aguado
OBJECTIVES: To evaluate the potential role of PCR-based assays in the overdiagnosis of Clostridium difficile infection (CDI) by using a validated diagnostic algorithm in daily clinical practice. METHODS: We performed a retrospective cohort study evaluating all C. difficile-positive stool samples identified at our institution during a 12-month period, to compare outcomes and recurrence rate between patients with a positive enzyme-immunoassay (EIA) for both glutamate dehydrogenase (GDH) and toxin A/B ("toxin-positive group"), with those with GDH-positive, toxin-negative samples in which the diagnosis was made by a positive PCR-based assay ("toxin-/PCR+ group")...
August 12, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28807623/spatio-temporal-variability-of-the-epidemic-027-clostridium-difficile-strains-in-france-based-on-mlva-typing
#3
Jeanne Couturier, Catherine Eckert, Frédéric Barbut
MLVA analysis of 103 PCR ribotype 027 strains showed a regional specificity and the persistence of the same clone within a hospital several years apart. Capillary electrophoresis PCR ribotyping led to the identification of seven 027 variant strains and five 176 strains, four of them being implicated in an outbreak.
August 11, 2017: Anaerobe
https://www.readbyqxmd.com/read/28801119/stability-and-efficacy-of-frozen-and-lyophilized-fecal-microbiota-transplant-fmt-product-in-a-mouse-model-of-clostridium-difficile-infection-cdi
#4
Zhi-Dong Jiang, Ashley Alexander, Shi Ke, Evangelia M Valilis, Shaofan Hu, Bingjie Li, Herbert L DuPont
Freezing donor fecal microbiota has simplified fecal microbiota transplantation (FMT) in the treatment of recurrent C. difficile infection (CDI). However, the optimal storage time for the frozen FMT products remains unknown. Using an established murine model of CDI, stability and efficacy of frozen and lyophilized FMT product was studied at time points from 2 months to 15 months. DNA was extracted from fecal samples from the mice with identification of specific bacterial species by real-time quantitative PCR (qPCR)...
August 8, 2017: Anaerobe
https://www.readbyqxmd.com/read/28782508/circulating-and-tissue-resident-cd4-t-cells-with-reactivity-to-intestinal-microbiota-are-abundant-in-healthy-individuals-and-function-is-altered-during-inflammation
#5
Ahmed N Hegazy, Nathaniel R West, Michael J T Stubbington, Emily Wendt, Kim I M Suijker, Angeliki Datsi, Sebastien This, Camille Danne, Suzanne Campion, Sylvia H Duncan, Benjamin M J Owens, Holm H Uhlig, Andrew McMichael, Andreas Bergthaler, Sarah A Teichmann, Satish Keshav, Fiona Powrie
BACKGROUND & AIMS: Interactions between commensal microbes and the immune system are tightly regulated and maintain intestinal homeostasis, but little is known about these interactions in humans. We investigated responses of human CD4(+) T cells to the intestinal microbiota. We measured the abundance of T cells in circulation and intestinal tissues that respond to intestinal microbes and determined their clonal diversity. We also assessed their functional phenotypes and effects on intestinal resident cell populations, and studied alterations in microbe-reactive T cells in patients with chronic intestinal inflammation...
August 3, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28780742/is-there-a-relationship-between-the-presence-of-the-binary-toxin-genes-in-clostridium-difficile-strains-and-the-severity-of-c-difficile-infection-cdi
#6
C E Berry, K A Davies, D W Owens, M H Wilcox
Some strains of Clostridium difficile produce a binary toxin, in addition to the main C. difficile virulence factors (toxins A and B). There have been conflicting reports regarding the role of binary toxin and its relationship to the severity of C. difficile infection (CDI). Samples, isolates and clinical data were collected as part of a prospective multicentre diagnostic study. Clostridium difficile isolates (n = 1259) were tested by polymerase chain reaction (PCR) assay to detect binary toxin genes cdtA and cdtB...
August 5, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28751156/performance-evaluation-of-the-verigene-%C3%A2-clostridium-difficile-nucleic-acid-test-an-automated-multiplex-molecular-testing-system-for-detection-of-c-%C3%A2-difficile-toxin
#7
Kosuke Kosai, Yuki Iwanaga, Norihiko Akamatsu, Yuya Okada, Norihito Kaku, Naoki Uno, Yoshitomo Morinaga, Hiroo Hasegawa, Taiga Miyazaki, Koichi Izumikawa, Hiroshi Mukae, Katsunori Yanagihara
The Verigene(®)Clostridium difficile nucleic acid test (Verigene(®) CDF test) is an automatic and rapid detection system for the genes encoding tcdA, tcdB, binary toxin, and the single nucleotide deletion at base pair 117 in the tcdC based on microarray and PCR amplification. We compared the performance of the Verigene(®) CDF test to that of two enzyme immunoassays, C. DIFF QUIK CHEK COMPLETE and X/Pect Toxin A/B, using 118 specimens. We found overall concordance rates of 81.4% and 78.8% between C. DIFF QUIK CHEK COMPLETE and Verigene(®) CDF test, and X/Pect Toxin A/B and Verigene(®) CDF test...
July 24, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28730135/clinical-characteristics-and-ultrasonographic-findings-of-acute-bacterial-enterocolitis-in-children
#8
Peter Chun, Taek Jin Lim, Eun Ha Hwang, Sang Wook Mun, Yeoun Joo Lee, Jae Hong Park
PURPOSE: This study clarified the bacterial pathogens currently causing acute infectious enterocolitis (AIE) in children and evaluated the clinical characteristics and ultrasonographic findings according to the different pathogens. METHODS: Medical records regarding age, sex, clinical symptoms, laboratory data, identified enteropathogens, ultrasonographic findings, treatment, and outcome of 34 patients who were diagnosed with AIE via stool examination using multiplex polymerase chain reaction (PCR) or culture, were retrospectively reviewed...
June 2017: Pediatric Gastroenterology, Hepatology & Nutrition
https://www.readbyqxmd.com/read/28721981/detection-of-clostridium-difficile-antigen-and-toxin-in-stool-specimens-comparison-of-the-c-difficile-quik-chek-complete-enzyme-immunoassay-and-genexpert-c-difficile-polymerase-chain-reaction-assay
#9
Abiola C Senok, Kamel M Aldosari, Rayan A Alowaisheq, Othman A Abid, Khalid A Alsuhaibani, Mohammad A Khan, Ali M Somily
BACKGROUND/AIMS: Accurate and rapid laboratory diagnosis of Clostridium difficile infections (CDI) remains a significant challenge. A two-step algorithm for detection of toxigenic C. difficile in stool based on initial screening for glutamate dehydrogenase assay followed by confirmation by toxin A+B detection using an enzyme immunoassay (EIA) or molecular assay has been proposed. We aimed to evaluate the C. difficile Quik Chek Complete® (QCC-EIA) versus the GeneXpert® C. difficile polymerase chain reaction (PCR) assay in this two-step algorithm...
July 2017: Saudi Journal of Gastroenterology: Official Journal of the Saudi Gastroenterology Association
https://www.readbyqxmd.com/read/28705583/prevalence-and-risk-factors-for-colonization-by-clostridium-difficile-and-extended-spectrum-%C3%AE-lactamase-producing-enterobacteriaceae-in-rehabilitation-clinics-in-germany
#10
Mardjan Arvand, Claudia Ruscher, Gudrun Bettge-Weller, Markus Goltz, Yvonne Pfeifer
BACKGROUND: Rehabilitation clinics may vary widely in terms of type of care provided, duration of hospital stay, and case severity. Only few data are available on prevalence of Clostridium difficile or extended-spectrum β-lactamase-producing Enterobacteriaceae (ESBL-E) colonization in rehabilitation clinics in Germany. AIM: This study investigated the frequency of intestinal colonization by these pathogens among patients in rehabilitation clinics of different specialization...
July 10, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28693926/high-in%C3%A2-vitro-activity-of-fidaxomicin-against-clostridium-difficile-isolates-from-a-university-teaching-hospital-in-china
#11
Jing-Wei Cheng, Qi-Wen Yang, Meng Xiao, Shu-Ying Yu, Meng-Lan Zhou, Timothy Kudinha, Fanrong Kong, Jian-Wei Liao, Ying-Chun Xu
BACKGROUND: Clostridium difficile infection (CDI) is a significant cause of morbidity and mortality in both the acute care setting and the wider healthcare system. The purpose of this study was to evaluate the in vitro activity of fidaxomicin against C.difficile isolates from a university teaching hospital in China. METHODS: One hundred and one C.difficile isolates were collected and analyzed for toxin genes by multiplex PCR. The toxin gene positive strains were also typed by multilocus sequence typing (MLST) and PCR-ribotyping...
June 29, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28689671/detection-of-toxigenic-clostridium-difficile-in-paediatric-patients
#12
Iker Falces-Romero, Paloma Troyano-Hernáez, Silvia García-Bujalance, Fernando Baquero-Artigao, María José Mellado-Peña, Julio García-Rodríguez
INTRODUCTION: Our main objective was a revision of clinical, microbiological and epidemiological results of Clostridium difficile-associated infection in paediatric patients (2010-2015). We compared the diagnoses performed by detection of toxins in feces and those performed by real-time PCR. METHODS: This retrospective study included 82 paediatric patients. Detection of toxigenic C. difficile was performed sequentially, in diarrheal feces and under clinical request...
July 6, 2017: Enfermedades Infecciosas y Microbiología Clínica
https://www.readbyqxmd.com/read/28689506/description-and-validation-of-a-new-automated-surveillance-system-for-clostridium-difficile-in-denmark
#13
M Chaine, S Gubbels, M Voldstedlund, B Kristensen, J Nielsen, L P Andersen, S Ellermann-Eriksen, J Engberg, A Holm, B Olesen, H C Schønheyder, C Østergaard, S Ethelberg, K Mølbak
The surveillance of Clostridium difficile (CD) in Denmark consists of laboratory based data from Departments of Clinical Microbiology (DCMs) sent to the National Registry of Enteric Pathogens (NREP). We validated a new surveillance system for CD based on the Danish Microbiology Database (MiBa). MiBa automatically collects microbiological test results from all Danish DCMs. We built an algorithm to identify positive test results for CD recorded in MiBa. A CD case was defined as a person with a positive culture for CD or PCR detection of toxin A and/or B and/or binary toxin...
September 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28681203/increasing-incidence-of-clostridium-difficile-ribotype-001-associated-with-severe-course-of-the-infection-and-previous-fluoroquinolone-use-in-the-czech-republic-2015
#14
M Krutova, J Matejkova, P Drevinek, E J Kuijper, O Nyc
The aim of the study was to provide an update on the epidemiology of C. difficile infection (CDI) in a representative number of hospitals within the Czech Republic in 2015. In 2015, twenty-eight Czech hospitals were invited to participate in a CDI study. Laboratories sent the first 20 consecutive C. difficile isolates for characterization by capillary-electrophoresis (CE) ribotyping and the presence of toxin genes and collected patient data on previous hospitalization, antibiotic treatment, the number of CDI episodes and the course of CDI...
July 5, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28663118/a-cfr-like-gene-cfr-c-conferring-linezolid-resistance-is-common-in-clostridium-difficile
#15
Thomas Candela, Jean-Christophe Marvaud, Tiep Khac Nguyen, Thierry Lambert
Clostridium difficile T10 and Clostridium bolteae 90B3 were co-resistant to phenicols, lincosamides, oxazolidinones, pleuromutilins and streptogramin A (PhLOPSA) and harbored an unreported cfr-like determinant that may alter the 23S rRNA by m(8)A2503 methylation. The cfr-like cfr(C) gene was cloned in C. difficile 630Δerm in which it conferred PhLOPSA resistance. In C. bolteae 90B3: (i) qRT-PCR analysis indicated that cfr(C) was similarly expressed in the absence or presence of either chloramphenicol or clindamycin or linezolid; and (ii) cfr(C) was part of a putative 24 kb-transposon, which generated a detectable circular intermediate...
June 27, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28655581/clinical-and-molecular-characteristics-of-community-acquired-clostridium-difficile-infections-in-comparison-with-those-of-hospital-acquired-c-%C3%A2-difficile
#16
Soon Sung Kwon, Jung Lim Gim, Myung Sook Kim, Heejung Kim, Jun Yong Choi, Dongeun Yong, Kyungwon Lee
Community-acquired Clostridium difficile infection (CA-CDI) is a growing concern. CA-CDI differs from hospital-acquired C. difficile infection (HA-CDI) in its epidemiology, risk factors, severity, and outcomes. In this study, we investigated C. difficile infections in a tertiary care hospital in Seoul, Korea, and compared the CA-CDI and HA-CDI cases diagnosed in the same period. Total 593 cases were confirmed as CDI in 2014, of which CA-CDI accounted for 68 (11.5%) of the total CDI cases. Compared with HA-CDI, the mean age of CA-CDI cases was lower than that of HA-CDI (42...
June 24, 2017: Anaerobe
https://www.readbyqxmd.com/read/28645479/impact-of-the-nap-1-strain-on-disease-severity-mortality-and-recurrence-of-healthcare-associated-clostridium-difficile-infection
#17
Karri A Bauer, Jessica E W Johnston, Eric Wenzler, Debra A Goff, Charles H Cook, Joan-Miquel Balada-Llasat, Preeti Pancholi, Julie E Mangino
OBJECTIVES: Studies are conflicting regarding the association of the North American pulsed-field gel electrophoresis type 1 (NAP1) strain in Clostridium difficile infection (CDI) and outcomes. We evaluated the association of NAP1 with healthcare-associated CDI disease severity, mortality, and recurrence at our academic medical center. METHODS: Healthcare-associated CDI cases were identified from November 1, 2011 through January 31, 2013. Multivariable regression models were used to evaluate the associations of NAP1 with severe disease (based on the Hines VA severity score index), mortality, and recurrence...
June 21, 2017: Anaerobe
https://www.readbyqxmd.com/read/28641091/increasing-rates-of-clostridium-difficile-infection-in-mexican-hospitals
#18
Laura Palau Dávila, Elvira Garza-González, Patricia Rodríguez-Zulueta, Rayo Morfín-Otero, Eduardo Rodríguez-Noriega, Diana Villar-Compte, Juan C Rodríguez-Aldama, Adrián Camacho-Ortiz
INTRODUCTION: The epidemiology of Clostridium difficile infection (CDI) has changed in the last two decades. There is a lack of information regarding incidence and severity of CDI, especially in the developing world. METHODS: This was a retrospective and observational study from four hospitals of three Mexican cities. Patients were diagnosed with CDI when presented with loose stools and had at least one of the following tests positive: toxins assay, real-time PCR, or an endoscopic image compatible with pseudomembranous colitis...
June 19, 2017: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28639362/the-effect-of-hospital-biocide-sodium-dichloroisocyanurate-on-the-viability-and-properties-of-clostridium-difficile-spores
#19
L T Joshi, A Welsch, J Hawkins, L Baillie
Clostridium difficile is the primary cause of healthcare-associated diarrhoea globally and produces spores which are resistant to commonly used biocides and are able persist on contaminated surfaces for months. This study examined the effect of sublethal concentrations of the biocide sodium dichloroisocyanurate (NaDCC) on the viability of spores produced by 21 clinical isolates of C. difficile representing a range of PCR ribotypes. Spores exposed to 500 ppm NaDCC for 10 min exhibited between a 4-6 log10 reduction in viability which was independent of spore PCR ribotype...
June 22, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28615471/clostridium-difficile-pcr-cycle-threshold-predicts-free-toxin
#20
Fiona Senchyna, Rajiv L Gaur, Saurabh Gombar, Cynthia Y Truong, Lee F Schroeder, Niaz Banaei
Background. There is no stand-alone Clostridium difficile diagnostic that can sensitively and rapidly detect fecal free toxins. We investigated the performance of C. difficile PCR cycle threshold (CT) for predicting free toxin status.Method. Consecutive stool samples (n=312) positive for toxigenic C. difficile with the GeneXpert C.diff Epi tcdB PCR assay were tested with the rapid membrane C. DIFF QUIK CHEK COMPLETE immunoassay (RMEIA). RMEIA toxin-negative samples were tested with the cell cytotoxicity neutralization assay (CCNA) and tgcBIOMICS ELISA...
June 14, 2017: Journal of Clinical Microbiology
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