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https://www.readbyqxmd.com/read/28936948/control-of-clostridium-difficile-infection-by-defined-microbial-communities
#1
James Collins, Jennifer M Auchtung
Each year in the United States, billions of dollars are spent combating almost half a million Clostridium difficile infections (CDIs) and trying to reduce the ∼29,000 patient deaths in which C. difficile has an attributed role. In Europe, disease prevalence varies by country and level of surveillance, though yearly costs are estimated at €3 billion. One factor contributing to the significant health care burden of C. difficile is the relatively high frequency of recurrent CDIs. Recurrent CDI, i.e., a second episode of symptomatic CDI occurring within 8 weeks of successful initial CDI treatment, occurs in ∼25% of patients, with 35 to 65% of these patients experiencing multiple episodes of recurrent disease...
September 2017: Microbiology Spectrum
https://www.readbyqxmd.com/read/28935729/complete-genome-sequence-of-clostridioides-difficile-epidemic-strain-dh-nap11-106-st-42-isolated-from-stool-from-a-pediatric-patient-with-diarrhea
#2
Egon A Ozer, Alan R Hauser, Dale N Gerding, Robyn O Espinosa, David W Hecht, Larry K Kociolek
We report here the complete genome sequence of Clostridioides difficile strain DH/NAP11/106/ST-42, which is now the most common strain causing C. difficile infection among U.S. adults. This strain was isolated from the stool from a hospitalized pediatric patient with frequent relapses of C. difficile infection.
September 21, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28934954/clostridium-difficile-infection-in-the-lao-people-s-democratic-republic-first-isolation-and-review-of-the-literature
#3
Elaine Cheong, Tamalee Roberts, Sayaphet Rattanavong, Thomas V Riley, Paul N Newton, David A B Dance
BACKGROUND: Current knowledge of the epidemiology of Clostridium difficile infection in Asia, and in particular the Greater Mekong Subregion, is very limited. Only a few studies from Thailand and Vietnam have been reported from the region with variable testing methods and results, and no studies from Lao People's Democratic Republic (PDR). Therefore we investigated the presence of C. difficile in a single centre in the Lao PDR and determined the ribotypes present. METHOD: Seventy unformed stool samples from hospital inpatients at Mahosot Hospital, Vientiane, were tested for the presence of C...
September 21, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28932754/hair-growth-in-two-alopecia-patients-after-fecal-microbiota-transplant
#4
Dionne Rebello, Elaina Wang, Eugene Yen, Peter A Lio, Colleen R Kelly
Clostridium difficile infections can be life-threatening but are increasingly being treated successfully with fecal microbiota transplantation (FMT). We report two patients with alopecia universalis who developed subsequent hair regrowth after FMT for treatment of recurrent C. difficile infections. Gut microbiota may have immunomodulatory effects in autoimmune conditions such as alopecia areata, and further study may elucidate disease mechanisms and lead to alternative treatment options for these patients for whom treatment options are currently limited...
2017: ACG Case Reports Journal
https://www.readbyqxmd.com/read/28930010/disease-burden-of-clostridium-difficile-infections-in-adults-hong-kong-china-2006-2014
#5
Jeffery Ho, Rudin Z W Dai, Thomas N Y Kwong, Xiansong Wang, Lin Zhang, Margaret Ip, Raphael Chan, Peter M K Hawkey, Kelvin L Y Lam, Martin C S Wong, Gary Tse, Matthew T V Chan, Francis K L Chan, Jun Yu, Siew C Ng, Nelson Lee, Justin C Y Wu, Joseph J Y Sung, William K K Wu, Sunny H Wong
Cross-sectional studies suggest an increasing trend in incidence and relatively low recurrence rates of Clostridium difficile infections in Asia than in Europe and North America. The temporal trend of C. difficile infection in Asia is not completely understood. We conducted a territory-wide population-based observational study to investigate the burden and clinical outcomes in Hong Kong, China, over a 9-year period. A total of 15,753 cases were identified, including 14,402 (91.4%) healthcare-associated cases and 817 (5...
October 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28929960/-antimicrobial-susceptibilities-and-molecular-characterization-of-toxin-positive-clostridium-difficile-isolates-the-first-report-on-the-presence-of-hypervirulent-strains-from-turkey
#6
Emrah Salman, Belkıs Levent, Zeynep Ceren Karahan
Clostridium difficile infection is one of the most important hospital-acquired infections. Infections caused by hypervirulent C.difficile strains which produce toxins at high levels, have higher morbidity and mortality rates, more complications and relapses. They are characterized by higher sporulation ratios and resistance rates for fluoroquinolones. In order to prevent serious morbidities, mortalities and remarkable increase in health costs, highly pathogenic C.difficile strains must be identified before causing severe outbreaks...
July 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28928035/molecular-analysis-of-three-clostridium-difficile-strain-genomes-isolated-from-pig-farm-related-samples
#7
I Martín-Burriel, S Andrés-Lasheras, F Harders, R C Mainar-Jaime, B Ranera, P Zaragoza, V Falceto, Y Bolea, E Kuijper, R Bolea, A Bossers, M Chirino-Trejo
Clostridium difficile is an anaerobic spore-forming bacillus that usually causes gastrointestinal disorders in man and other animal species. Most of the strains isolated from animals are toxigenic being the virulent ribotype (RT) 078 predominant in several animal species. Although C. difficile is pathogenic to both humans and animals, there is no direct evidence of zoonosis. Deep genome sequencing provides sufficient resolution to analyse which strains found in animals might be related to human pathogens. So far, there are only a few fully sequenced genomes of C...
September 16, 2017: Anaerobe
https://www.readbyqxmd.com/read/28927227/enteric-microbiome-profiles-during-a-randomized-phase-2-clinical-trial-of-surotomycin-versus-vancomycin-for-the-treatment-of-clostridium-difficile-infection
#8
Kristine Cannon, Brendan Byrne, Jennifer Happe, Kaiyu Wu, Linda Ward, Laurent Chesnel, Thomas Louie
Objectives: The effects of surotomycin (CB-183,315, MK-4261), a bactericidal cyclic lipopeptide, and vancomycin, the current standard-of-care for Clostridium difficile infection (CDI), on intestinal pathogens and microbiota were evaluated parallel to a Phase 2 randomized, double-blind clinical trial. Methods: The single-centre cohort included 26 patients receiving surotomycin [125 or 250 mg twice daily ( n  =   9 each)] or oral vancomycin [125 mg four times daily ( n  =   8)] for 10 days...
September 12, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28923757/clinical-practice-and-infrastructure-review-of-fecal-microbiota-transplantation-for-clostridium-difficile-infection
#9
REVIEW
Brendan J Kelly, Pablo Tebas
A significant proportion of C. difficile infection (CDI) cases recur after completion of antibiotic therapy, and antibiotic cure rates diminish with each recurrence of CDI. Fecal microbiota transplantation (FMT) is an effective therapy for recurrent FMT, which otherwise requires prolonged or indefinite antibiotic treatment. FMT is performed by introducing the fecal microbial community obtained from a healthy donor or pool of donors into the stomach, small intestine, or colon of a patient with CDI. Multiple clinical trials support the utility of FMT in treating recurrent CDI, and CDI treatment guidelines now include consideration of FMT at the third CDI recurrence...
September 15, 2017: Chest
https://www.readbyqxmd.com/read/28919674/prevalence-of-enteropathogens-and-their-antibiotic-sensitivity-pattern-in-puppies-with-hemorrhagic-gastroenteritis
#10
A Kokila Priya, M Balagangatharathilagar, D Chandrasekaran, M Parthiban, S Prathaban
AIM: Hemorrhagic gastroenteritis (HGE) ranging from mild to severe forms is commonly encountered in puppies. The aim of the study was to identify the prevalence of common enteropathogens and the antibiotic sensitivity pattern in puppies reported with HGE. MATERIALS AND METHODS: The canine HGE activity index, with little modification, was adopted to identify Grade III/severely affected puppies below 6 months of age. Fecal polymerase chain reaction (PCR) assay was employed to screen and compare the enteropathogens in puppies with hemorrhagic diarrhea and healthy control...
August 2017: Veterinary World
https://www.readbyqxmd.com/read/28914275/national-trends-2007-2013-of-clostridium-difficile-infection-in-patients-with-septic-shock-impact-on-outcome
#11
Kshitij Chatterjee, Abhinav Goyal, Aditya Chada, Krishna Siva Kakkera, Howard L Corwin
BACKGROUND: Clostridium difficile is the most common infectious cause of healthcare-associated diarrhea and is associated with worse outcomes and higher cost. Patients with septic shock (SS) are at increased risk of acquiring C. difficile infections (CDIs) during hospitalization, but little data are available on CDI complicating SS. OBJECTIVE: Prevalence of CDI in SS between 2007-2013 and impact of CDI on outcomes in SS. METHODS: Outcomes were prevalence of CDI in SS, effect on mortality, length of stay (LOS), and 30-day readmission...
September 2017: Journal of Hospital Medicine: An Official Publication of the Society of Hospital Medicine
https://www.readbyqxmd.com/read/28902923/molecular-microbiological-and-clinical-characterization-of-clostridium-difficile-isolates-from-tertiary-care-hospitals-in-colombia
#12
Clara Lina Salazar, Catalina Reyes, Santiago Atehortua, Patricia Sierra, Margarita María Correa, Daniel Paredes-Sabja, Emma Best, Warren N Fawley, Mark Wilcox, Ángel González
In Colombia, the epidemiology and circulating genotypes of Clostridium difficile have not yet been described. Therefore, we molecularly characterized clinical isolates of C.difficile from patients with suspicion of C.difficile infection (CDI) in three tertiary care hospitals. C.difficile was isolated from stool samples by culture, the presence of A/B toxins were detected by enzyme immunoassay, cytotoxicity was tested by cell culture and the antimicrobial susceptibility determined. After DNA extraction, tcdA, tcdB and binary toxin (CDTa/CDTb) genes were detected by PCR, and PCR-ribotyping performed...
2017: PloS One
https://www.readbyqxmd.com/read/28899198/adaptive-immune-constraints-on-c-difficile-vaccination
#13
Mark L Lang, Binu Shrestha
No abstract text is available yet for this article.
September 13, 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/28893366/fidaxomicin-reduces-early-toxin-a-and-b-production-and-sporulation-in-clostridium-difficilein-vitro
#14
Michael J Aldape, Aaron E Packham, Dustin D Heeney, Savannah N Rice, Amy E Bryant, Dennis L Stevens
PURPOSE: Fidaxomicin, a macrocyclic antibiotic, has been approved for the treatment of Clostridium difficile infection (CDI). Previous work by our group has demonstrated that some antibiotics at sub-inhibitory concentrations stimulate early toxin production and sporulation by C. difficile. Prior studies revealed that fidaxomicin, when added to late stationary-phase organisms, reduced exotoxin production and spore formation by C. difficile. However, the ability of fidaxomicin to trigger early virulence factor production and spore formation has never been investigated...
September 12, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28891459/prevalence-of-clostridium-difficile-infection-and-colonization-in-a-tertiary-hospital-and-elderly-community-of-north-eastern-peninsular-malaysia
#15
N H Zainul, Z F Ma, A Besari, H Siti Asma, R A Rahman, D A Collins, N Hamid, T V Riley, Y Y Lee
Little is known about Clostridium difficile infection (CDI) in Asia. The aims of our study were to explore (i) the prevalence, risk factors and molecular epidemiology of CDI and colonization in a tertiary academic hospital in North-Eastern Peninsular Malaysia; (ii) the rate of carriage of C. difficile among the elderly in the region; (iii) the awareness level of this infection among the hospital staffs and students. For stool samples collected from hospital inpatients with diarrhea (n = 76) and healthy community members (n = 138), C...
September 11, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28889309/identification-of-c-di-gmp-responsive-riboswitches
#16
Johann Peltier, Olga Soutourina
Bis-(3'-5')-cyclic dimeric guanosine monophosphate (c-di-GMP) is an important signaling molecule for community behavior control, cell morphogenesis, and virulence in bacteria. In addition to protein effectors, this second messenger binds RNA molecules that act as riboswitches to control target gene expression. In this chapter, we describe a method for experimental validation of the functionality of c-di-GMP-responsive riboswitches and the analysis of c-di-GMP control of target gene expression by qRT-PCR and Northern blot...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28882583/clinical-and-epidemiological-characteristics-in-hospitalized-young-children-with-acute-gastroenteritis-in-southern-taiwan-according-to-major-pathogens
#17
Ning Chung, Shih-Min Wang, Ching-Fen Shen, Fu-Chun Kuo, Tzong-Shiann Ho, Chao Agnes Hsiung, Jung-Jung Mu, Fang-Tzy Wu, Li-Min Huang, Yi-Chuan Huang, Yhu-Chering Huang, Hsin Chi, Hsiao-Chuan Lin, Ching-Chuan Liu
BACKGROUND: Acute gastroenteritis (AGE) can be caused by a wide array of pathogens, including bacteria, viruses, and parasites. A prospective study to investigate the epidemiology and clinical presentation in young children hospitalized with AGE was conducted in a medical center in southern Taiwan. METHODS: Patients aged less than 5 years who was hospitalized due to AGE in National Cheng Kung University Hospital were enrolled from July 2014 to June 2016. The demographic information, clinical features and laboratory data were collected by chart reviews, and stool samples were sent to Centers of Disease Control, Taiwan (Taiwan CDC) for a panel of pathogen identification consisting of two viruses, nine bacteria, and five parasites...
August 31, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28878013/new-class-of-precision-antimicrobials-redefines-role-of-clostridium-difficile-s-layer-in-virulence-and-viability
#18
Joseph A Kirk, Dana Gebhart, Anthony M Buckley, Stephen Lok, Dean Scholl, Gillian R Douce, Gregory R Govoni, Robert P Fagan
There is a medical need for antibacterial agents that do not damage the resident gut microbiota or promote the spread of antibiotic resistance. We recently described a prototypic precision bactericidal agent, Av-CD291.2, which selectively kills specific Clostridium difficile strains and prevents them from colonizing mice. We have since selected two Av-CD291.2-resistant mutants that have a surface (S)-layer-null phenotype due to distinct point mutations in the slpA gene. Using newly identified bacteriophage receptor binding proteins for targeting, we constructed a panel of Avidocin-CDs that kills diverse C...
September 6, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28874406/revisiting-the-role-of-csp-family-proteins-in-regulating-clostridium-difficile-spore-germination
#19
Yuzo Kevorkian, Aimee Shen
Clostridium difficile causes considerable healthcare-associated gastrointestinal disease that is transmitted by its metabolically dormant spore form. Upon entering the gut, C. difficile spores germinate and outgrow to produce vegetative cells that release disease-causing toxins. C. difficile spore germination depends on the Csp family of (pseudo)proteases and the cortex hydrolase, SleC. The CspC pseudoprotease functions as a bile salt germinant receptor that activates the protease CspB, which in turn proteolytically activates SleC zymogen...
September 5, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/28870746/incidence-risk-factors-and-impact-of-clostridium-difficile-colitis-following-primary-total-hip-and-knee-arthroplasty
#20
Patawut Bovonratwet, Daniel D Bohl, Rohil Malpani, Denis Nam, Craig J Della Valle, Jonathan N Grauer
BACKGROUND: An improved understanding of Clostridium difficile is important as it is used as a measure of hospital quality and is associated with substantial morbidity. This study utilizes the National Surgical Quality Improvement Program to determine the incidence, timing, risk factors, and clinical implications of C difficile colitis in patients undergoing primary total hip or knee arthroplasty (THA or TKA). METHODS: Patients who underwent primary THA or TKA as part of the 2015 National Surgical Quality Improvement Program were identified...
August 12, 2017: Journal of Arthroplasty
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