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Clostridium difficile AND PCR

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https://www.readbyqxmd.com/read/28087170/clostridium-difficile-rates-in-asymptomatic-and-symptomatic-hospitalized-patients-using-nucleic-acid-testing
#1
Cynthia Truong, Lee F Schroeder, Rajiv Gaur, Victoria Emma Anikst, Ikuko Komo, Colleen Watters, Erin McCalley, Carole Kulik, David Pickham, Nancy J Lee, Niaz Banaei
BACKGROUND: The Clostridium difficile rate in symptomatic patients represents both those with C. difficile infection (CDI) and those with colonization. To predict the extent of CDI overdiagnosis, we compared the asymptomatic colonization rate to the symptomatic positivity rate in hospitalized patients using nucleic acid testing. METHODS: Between July 2014 and April 2015, formed stool samples were collected from asymptomatic patients after admission to 3 hospital wards at the Stanford Hospital...
January 3, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28054289/procalcitonin-is-a-poor-predictor-of-non-infectious-fever-in-the-neurocritical-care-unit
#2
Karin Halvorson, Sameer Shah, Corey Fehnel, Bradford Thompson, N Stevenson Potter, Mitchell Levy, Linda Wendell
BACKGROUND: Fever is a common occurrence in the Neurocritical Care Unit (NCCU). It is reported that up to 50 % of these fevers are associated with a non-infectious source. As this is a diagnosis of exclusion, a complete fever evaluation must be done to rule out infection. Procalcitonin (PCT) has been identified as a possible biomarker to distinguish infectious from non-infectious etiologies of fever. We hypothesized that PCT could be used as a predictor of infectious fever in febrile patients with intracranial hemorrhage admitted to the NCCU...
January 4, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28031436/comparative-genome-analysis-and-global-phylogeny-of-the-toxin-variant-clostridium-difficile-pcr-ribotype-017-reveals-the-evolution-of-two-independent-sub-lineages
#3
M D Cairns, M D Preston, C L Hall, D N Gerding, P M Hawkey, H Kato, H Kim, E J Kuijper, T D Lawley, H Pituch, S Reid, B Kullin, T V Riley, K Solomon, P J Tsai, J S Weese, R A Stabler, B W Wren
The diarrhoeal pathogen Clostridium difficile consists of at least six distinct evolutionary lineages. The RT017 lineage is anomalous as strains only express toxin B, compared to strains from other lineages that produce toxins A and B and occasionally binary toxin. Historically, RT017 were initially reported in Asia but have now been reported worldwide. We used whole genome sequencing and phylogenetic analysis to investigate the patterns of global spread and population structure of 277 RT017 isolates from animal and human origins from six continents, isolated between 1990 and 2013...
December 28, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28018325/sensitive-quantitative-analysis-of-the-meconium-bacterial-microbiota-in-healthy-term-infants-born-vaginally-or-by-cesarean-section
#4
Ravinder Nagpal, Hirokazu Tsuji, Takuya Takahashi, Kazunari Kawashima, Satoru Nagata, Koji Nomoto, Yuichiro Yamashiro
For decades, babies were thought to be born germ-free, but recent evidences suggest that they are already exposed to various bacteria in utero. However, the data on population levels of such pioneer gut bacteria, particularly in context to birth mode, is sparse. We herein aimed to quantify such bacteria from the meconium of 151 healthy term Japanese infants born vaginally or by C-section. Neonatal first meconium was obtained within 24-48 h of delivery; RNA was extracted and subjected to reverse-transcription-quantitative PCR using specific primers for Clostridium coccoides group, C...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28002482/clinical-characteristics-and-treatment-outcomes-of-clostridium-difficile-infections-by-pcr-ribotype-017-and-018-strains
#5
Jieun Kim, Yeonjae Kim, Hyunjoo Pai
The objective of this study was to identify the clinical characteristics of Clostridium difficile infections (CDIs) caused by toxin A-negative/toxin B-positive (A-B+) PCR ribotype 017 (R017) and A+B+ ribotype 018 (R018) strains, prevalent in Asian countries. From February 2010 through January 2013, all CDI patients in our hospital were enrolled; their medical records were retrospectively reviewed, and the isolates were characterized by toxigenic culture and PCR ribotyping. Based on the ribotypes, a total of 510 cases were categorized as R017 (139, 27...
2016: PloS One
https://www.readbyqxmd.com/read/27999477/detection-ribotyping-and-antimicrobial-resistance-properties-of-clostridium-difficile-strains-isolated-from-the-cases-of-diarrhea
#6
Samaneh Kouzegaran, Mahmood Ganjifard, Amir Saber Tanha
BACKGROUND: Clostridium difficile is the most prevalent cause of antibiotic-associated infectious diarrhea al-around the world. Prevalence of virulent and resistant strains of Clostridium difficile is increasing now a day. The present investigation was carried out to study the prevalence, ribotyping and antibiotic resistance pattern of C. difficile isolated from diarrheic and non-diarrheic pediatrics. MATERIALS AND METHODS: Four-hundred stool specimens were collected from the diarrheic and non-diarrheic pediatrics hospitalized due to the diseases other than diarrhea...
October 2016: Materia Socio-medica
https://www.readbyqxmd.com/read/27993853/in-vitro-activities-of-mcb3681-and-8-comparators-against-clostridium-difficile-isolates-with-known-ribotypes-and-diverse-geographical-spread
#7
J Freeman, S Pilling, J Vernon, M H Wilcox
Treatments for Clostridium difficile infection remain limited, despite the introduction of fidaxomicin, and development of new agents is necessary.We determined the in vitro susceptibilities of 199 prevalent or emerging Clostridium difficile PCR ribotypes to MCB3681, a novel investigational quinolonyl-oxazolidinone, and 8 comparators (metronidazole, vancomycin, fidaxomicin, moxifloxacin, ciprofloxacin, clindamycin, tigecycline and linezolid).MCB3681 showed good activity against C. difficile with no evidence of MCB3681 resistance in isolates showing either or both moxifloxacin and linezolid resistance...
December 19, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27990723/presence-of-clostridium-difficile-in-pig-faecal-samples-and-wild-animal-species-associated-with-pig-farms
#8
S Andrés-Lasheras, R Bolea, R C Mainar-Jaime, E Kuijper, E Sevilla, I Martín-Burriel, M Chirino-Trejo
AIMS: To determine the presence of Clostridium difficile on fattening pig farms in north-eastern Spain. METHODS AND RESULTS: Twenty-seven farms were sampled. Pools of pig faecal samples (n = 210), samples of intestinal content from common farm pest species (n = 95) and environment-related samples (n = 93) were collected. Isolates were tested for toxin genes of C. difficile, and typed by PCR-ribotyping and toxinotyping. The minimal inhibitory concentrations of six antimicrobial agents were determined using Etest...
November 5, 2016: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/27990343/homogeneous-and-digital-proximity-ligation-assays-for-the-detection-of-clostridium-difficile-toxins-a-and-b
#9
Harvinder S Dhillon, Gemma Johnson, Mark Shannon, Christina Greenwood, Doug Roberts, Stephen Bustin
BACKGROUND: The proximity ligation assay (PLA) detects proteins via their interaction with pairs of proximity probes, which are antibodies coupled to noncomplementary DNA oligonucleotides. The binding of both proximity probes to their epitopes on the target protein brings the oligonucleotides together, allowing them to be bridged by a third oligonucleotide with complementarity to the other two. This enables their ligation and the detection of the resulting amplicon by real-time quantitative PCR (qPCR), which acts as a surrogate marker for the protein of interest...
December 2016: Biomolecular Detection and Quantification
https://www.readbyqxmd.com/read/27986664/clinical-and-microbiological-characteristics-of-clostridium-difficile-infection-among-hospitalized-children-in-the-netherlands
#10
Sofie M van Dorp, Edela Smajlović, Cornelis W Knetsch, Daan W Notermans, Sabine C de Greeff, Ed J Kuijper
BACKGROUND: Little is known about pediatric Clostridium difficile infection (CDI) epidemiology. We describe the clinical and microbiological characteristics of CDI among hospitalized children in the Netherlands. METHODS: Between May 2009 and May 2015, 26 hospitals registered characteristics of pediatric (aged 2-18 years) and adult (aged 18 years) CDI in a national sentinel surveillance study. Routine polymerase chain reaction (PCR) ribotyping and multiple-locus variable-number tandem-repeat analysis (MLVA) of selected strains was performed...
October 19, 2016: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/27974547/molecular-epidemiology-of-clostridium-difficile-infection-in-hospitalized-patients-in-eastern-china
#11
Dazhi Jin, Yun Luo, Chen Huang, Jian Cai, Julian Ye, Yi Zheng, Liqian Wang, Peng Zhao, Anbing Liu, Weijia Fang, Xianjun Wang, Shichang Xia, Jianmin Jiang, Yi-Wei Tang
Few studies on risk factors and transmission of Clostridium difficile infection (CDI) have been reported from China. A cross-sectional study was conducted for three years in Eastern China. Consecutive stool specimens from hospitalized patients with diarrhea were cultured for C. difficile C. difficle isolates from these patients then were analyzed for toxin genes, genotypes and antimicrobial resistance. Severity of CDI was determined in each patient by a blinded review of the medical record and ranged from 1 to 6...
December 14, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27965048/isolation-of-clostridium-difficile-from-dogs-with-digestive-disorders-including-stable-metronidazole-resistant-strains
#12
Cristina Orden, Jose L Blanco, Sergio Álvarez-Pérez, Mercedes Garcia-Sancho, Fernando Rodriguez-Franco, Angel Sainz, Alejandra Villaescusa, Celine Harmanus, Ed Kuijper, Marta E Garcia
The prevalence of Clostridium difficile in 107 dogs with diverse digestive disorders attended in a Spanish veterinary teaching hospital was assessed. The microorganism was isolated from 13 dogs (12.1%) of different disease groups. Isolates belonged to PCR ribotypes 078, 106, 154 and 430 (all of them toxigenic) and 110 (non-toxigenic), and were resistant to several antimicrobial drugs. Notably, seven isolates obtained from different dogs displayed stable resistance to metronidazole. The results of this study provide further evidence that dogs can act as a reservoir of C...
December 11, 2016: Anaerobe
https://www.readbyqxmd.com/read/27957599/evaluation-of-the-biofire-filmarray%C3%A2-gastrointestinalpanel-in-a-midwestern-academic-hospital
#13
C N Murphy, R C Fowler, P C Iwen, P D Fey
The BioFire FilmArray® Gastrointestinal Panel (GIP) was implemented to replace traditional stool culture and enzyme immunoassay (EIA) testing for stool pathogens. The purpose of this study was to evaluate the detection rate, incidence of coinfection, and culture recovery rate of gastrointestinal (GI) pathogens detected by the GIP over a 1-year period. A total of 2257 stools collected from January to December 2015 were tested using the GIP. Clostridium difficile colonization was also evaluated by an antigen/toxin EIA and confirmatory polymerase chain reaction (PCR)...
December 12, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27938986/reduction-in-hospital-associated-methicillin-resistant-staphylococcus-aureus-and-vancomycin-resistant-enterococcus-with-daily-chlorhexidine-gluconate-bathing-for-medical-inpatients
#14
Christopher F Lowe, Elisa Lloyd-Smith, Baljinder Sidhu, Gordon Ritchie, Azra Sharma, Willson Jang, Anna Wong, Jennifer Bilawka, Danielle Richards, Thomas Kind, David Puddicombe, Sylvie Champagne, Victor Leung, Marc G Romney
BACKGROUND: Daily bathing with chlorhexidine gluconate (CHG) is increasingly used in intensive care units to prevent hospital-associated infections, but limited evidence exists for noncritical care settings. METHODS: A prospective crossover study was conducted on 4 medical inpatient units in an urban, academic Canadian hospital from May 1, 2014-August 10, 2015. Intervention units used CHG over a 7-month period, including a 1-month wash-in phase, while control units used nonmedicated soap and water bathing...
December 8, 2016: American Journal of Infection Control
https://www.readbyqxmd.com/read/27880843/highly-divergent-clostridium-difficile-strains-isolated-from-the-environment
#15
Sandra Janezic, Mojca Potocnik, Valerija Zidaric, Maja Rupnik
Clostridium difficile is one of the most important human and animal pathogens. However, the bacterium is ubiquitous and can be isolated from various sources. Here we report the prevalence and characterization of C. difficile in less studied environmental samples, puddle water (n = 104) and soil (n = 79). C. difficile was detected in 14.4% of puddle water and in 36.7% of soil samples. Environmental strains displayed antimicrobial resistance patterns comparable to already published data of human and animal isolates...
2016: PloS One
https://www.readbyqxmd.com/read/27860531/two-clusters-of-fluoroquinolone-and-clindamycin-resistant-clostridium-difficile-pcr-ribotype-001-strain-recognized-by-capillary-electrophoresis-ribotyping-and-multilocus-variable-tandem-repeat-analysis
#16
Otakar Nyc, Renata Tejkalova, Zdenek Kriz, Filip Ruzicka, Lubos Kubicek, Jana Matejkova, Ed Kuijper, Marcela Krutova
AIM: To perform a retrospective analysis of the high occurrence of Clostridium difficile infection in the surgical department of a Czech tertiary care hospital and to identify weaknesses in C. difficile infection (CDI) prevention and control policies. METHODS: Clinical and epidemiological data on eleven CDI cases were collected. C. difficile isolates were characterized by capillary electrophoresis ribotyping, multilocus variable tandem repeat analysis (MLVA), gyrA gene fragment sequencing, and erm(B) fragment PCR amplification...
November 18, 2016: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/27856584/draft-genome-sequence-of-robinsoniella-peoriensis-6600698-a-confounder-of-clostridium-difficile-diagnosis
#17
Chrissy H Roberts, Helen Alexandra Shaw, Natalie Ferguson, Mark Holland, Brendan W Wren, Richard A Stabler
Robinsoniella peoriensis is a Gram-positive, strictly anaerobic, spore-forming, rod-shaped organism. Here, we report the draft genome of R. peoriensis 6600698, initially classified as Clostridium difficile due to growth on selective agar, a fecal gdh PCR-positive result, and clinical symptoms. R. peoriensis is a potential confounder of C. difficile diagnosis.
November 17, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27852676/detection-of-clostridium-difficile-in-feces-of-asymptomatic-patients-admitted-to-the-hospital
#18
Elisabeth M Terveer, Monique J T Crobach, Ingrid M J G Sanders, Margreet C Vos, Cees M Verduin, Ed J Kuijper
Recent evidence shows that patients asymptomatically colonized with Clostridium difficile may contribute to the transmission of C. difficile in healthcare facilities. Additionally, these patients may have a higher risk of developing C. difficile infection. The aim of this study was to compare a commercially available PCR directed to both toxin A as B (artus C. difficile QS-RGQ Kit CE, QIAGEN), an Enzyme Linked Fluorescent Assay to Glutamate Dehydrogenase (GDH ELFA, VIDAS, bioMérieux), and an in-house developed PCR to TcdB, with (toxigenic) culture of C...
November 16, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27846818/asymptomatic-and-yet-c-difficile-toxin-positive-prevalence-and-risk-factors-of-carriers-of-toxigenic-clostridium-difficile-among-geriatric-in-patients
#19
Klaus Nissle, Daniel Kopf, Alexander Rösler
BACKGROUND: Clostridium difficile infections (CDI) are the most frequent cause of diarrhoea in hospitals. Geriatric patients are more often affected by the condition, by a relapse and complications. Therefore, a crucial question is how often colonization with toxigenic Clostridium difficile strains occurs in elderly patients without diarrhoea and whether there is a "risk pattern" of colonized patients that can be defined by geriatric assessment. Furthermore, the probability for those asymptomatic carriers to develop a symptomatic infection over time has not been sufficiently explored...
November 15, 2016: BMC Geriatrics
https://www.readbyqxmd.com/read/27829823/a-new-lab-developed-real-time-pcr-assay-for-direct-detection-of-c-difficle-from-stool-sample-without-dna-extraction
#20
Brandon Li
Clostridium difficile is a major cause of nosocomial antibiotic-associated infectious diarrhea and pseudomembranous colitis. Detection of C. difficile by anaerobic bacterial culture and/or cytotoxicity assays has been largely replaced by rapid enzyme immunoassays (EIA). However, due to the lack of sensitivity of stool EIA, we developed a multiplex real-time PCR assay targeting the C. difficile toxin genes tcdB. stool samples from hospitalized pediatric patients suspected of having C. difficile-associated disease were prospectively collected...
September 2016: International Journal of Biomedical Science: IJBS
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