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https://www.readbyqxmd.com/read/28735318/trends-of-bloodstream-infections-in-a-university-greek-hospital-during-a-three-year-period-incidence-of-multidrug-resistant-bacteria-and-seasonality-in-gram-negative-predominance
#1
Fevronia Kolonitsiou, Matthaios Papadimitriou-Olivgeris, Anastasia Spiliopoulou, Vasiliki Stamouli, Vasileios Papakostas, Eleni Apostolopoulou, Christos Panagiotopoulos, Markos Marangos, Evangelos D Anastassiou, Myrto Christofidou, Iris Spiliopoulou
The aim of the study was to assess the epidemiology, the incidence of multidrug-resistant bacteria and bloodstream infections' (BSIs) seasonality in a university hospital. This retrospective study was carried out in the University General Hospital of Patras, Greece, during 2011-13 y. Blood cultures from patients with clinical presentation suggestive of bloodstream infection were performed by the BacT/ALERT System. Isolates were identified by Vitek 2 Advanced Expert System. Antibiotic susceptibility testing was performed by the disk diffusion method and E-test...
July 6, 2017: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/28735054/linezolid-activity-against-clinical-gram-positive-cocci-with-advanced-antimicrobial-drug-resistance-in-iran
#2
Hamidreza Houri, Hossein Kazemian, Hadi Sedigh Ebrahim-Saraie, Asieh Taji, Zahra Tayebi, Hamid Heidari
OBJECTIVES: The aim of the study was to investigate the linezolid activity against clinical Gram-positive cocci with advanced antimicrobial drug resistance. METHODS: A collection of methicillin resistant Staphylococcus aureus (MRSA), vancomycin resistant enterococci (VRE), penicillin non-susceptible Streptococcus pneumoniae (PNSP), and group B streptococci (GBS) were isolated from various clinical samples. Antimicrobial susceptibility tests were done using standard methods Subsequently, we investigated linezolid antibacterial activities, the first approved oxazolidinone against isolates by the standard broth microdilution method...
July 19, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28731269/biofilm-formation-and-antibiotic-resistance-in-klebsiella-pneumoniae-urinary-strains
#3
Claudia Vuotto, Francesca Longo, Chiara Pascolini, Gianfranco Donelli, Maria Pia Balice, Maria Francesca Libori, Valentina Tiracchia, Antonino Salvia, Pietro Emanuele Varaldo
AIMS: Multi-drug resistant Klebsiella pneumoniae has become a relevant healthcare-associated pathogen. Capsule, type 1 and 3 fimbriae (mrkA gene), type 2 quorum-sensing system (luxS), synthesis of D-galactan I (wbbM), LPS transport (wzm) and poly-beta-1,6-N-acetyl-D-glucosamine (pgaA) seem involved in K. pneumoniae biofilm. Non-enzymatic antibiotic resistance is related to non-expression or mutation of porins (OmpK35 and OmpK36), and efflux pump (acrB) over-expression. The aim of this study was to analyse some virulence factors of K...
July 21, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28730700/relating-switching-rates-between-normal-and-persister-cells-to-substrate-and-antibiotic-concentrations-a-mathematical-modelling-approach-supported-by-experiments
#4
Gabriel Carvalho, Cyril Guilhen, Damien Balestrino, Christiane Forestier, Jean-Denis Mathias
We developed and compared two mathematical models of variable phenotypic switching rates between normal and persister cells that depend on substrate concentration and antibiotic presence. They could be used to simulate the formation of persisters in environments with concentration gradients such as biofilms. Our models are extensions of a previous model of the dynamics of normal and persistent cell populations developed by Balaban et al. (2004, Science 305: 1622). We calibrated the models' parameters with experimental killing curves obtained after ciprofloxacin treatment of samples regularly harvested from planktonic batch cultures of Klebsiella pneumoniae...
July 21, 2017: Microbial Biotechnology
https://www.readbyqxmd.com/read/28730159/antibiotic-prescribing-for-adults-hospitalized-in-the-etiology-of-pneumonia-in-the-community-study
#5
Sara Tomczyk, Seema Jain, Anna M Bramley, Wesley H Self, Evan J Anderson, Chris Trabue, D Mark Courtney, Carlos G Grijalva, Grant W Waterer, Kathryn M Edwards, Richard G Wunderink, Lauri A Hicks
BACKGROUND: Community-acquired pneumonia (CAP) 2007 guidelines from the Infectious Diseases Society of America (IDSA)/American Thoracic Society (ATS) recommend a respiratory fluoroquinolone or beta-lactam plus macrolide as first-line antibiotics for adults hospitalized with CAP. Few studies have assessed guideline-concordant antibiotic use for patients hospitalized with CAP after the 2007 IDSA/ATS guidelines. We examine antibiotics prescribed and associated factors in adults hospitalized with CAP...
2017: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/28729208/detection-of-multidrug-resistant-mdr-bacteria-in-untreated-waste-water-disposals-of-hospitals-in-dhaka-city-bangladesh
#6
M A G Rabbani, Md Zakir Hossain Hawlader, Yearul Kabir
BACKGROUND: Emergence of MDR bacteria is a global problem and a major burden for treatment of various infectious diseases. This study was performed to detect antibiotic resistant bacteria in untreated hospital waste. METHOD: Waste water samples were collected from sewerage disposal points of two renowned hospital of Dhaka city and a total of 59 Escherichia coli and 29 Klebsiella pneumonia isolates were isolated. Antibiotic susceptibility were measured by disc diffusion method...
July 17, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28729207/first-two-cases-of-severe-multifocal-infections-caused-by-klebsiella-pneumoniae-in-switzerland-characterization-of-an-atypical-non-k1-k2-serotype-strain-causing-liver-abscess-and-endocarditis
#7
Baharak Babouee Flury, Valentina Donà, Niccolo Buetti, Hansjakob Furrer, Andrea Endimiani
BACKGROUND: We describe the first two multifocal invasive infections due to Klebsiella pneumoniae recently observed in Switzerland. METHODS: Phenotypic (MIC assays and string test) and molecular analyses (PCR/Sequencing for bla, virulence factor genes and whole genome sequencing for one strain) were performed to characterize the causative K. pneumoniae isolates. RESULTS: Both K. pneumoniae isolates (Kp1 and Kp2) were pan-susceptible to antibiotics and produced narrow-spectrum SHV β-lactamases...
July 17, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28729206/antimicrobial-resistance-patterns-of-gram-negative-bacteria-isolated-from-bloodstream-infections-in-an-iranian-referral-pediatric-hospital-a-six-year-study
#8
Shima Mahmoudi, Masoumeh Mahzari, Maryam Banar, Babak Pourakbari, Mohammad Taghi Haghi Ashtiani, Mohsen Mohammadi, Sepideh Keshavarz Valian, Setareh Mamishi
INTRODUCTION: Bloodstream infections (BSIs) are considered as a major cause of morbidity and mortality in children all over the world. The aim of this study was to describe the epidemiology and antimicrobial resistance patterns of Gram-negative bacteria (GNB) isolated from bloodstream infections (BSIs) in children admitted to the Children Medical Center Hospital (CMC), Tehran, Iran. METHODS: Clinical and microbiological data of the patients with positive blood cultures was collected from March 2011 to September 2016...
July 17, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28729050/an-infant-with-concurrent-serotype-6c-invasive-pneumococcal-disease-and-infectious-mononucleosis
#9
Naoko Nishikawa-Nakamura, Takafumi Okada, Keiko Nishimura, Tsuyako Iwai, Kimiko Ubukata, Satoshi Iwata, Asayuki Iwai
Streptococcus pneumoniae is a main causative agent of serious invasive bacterial infections. However, concurrent infection with invasive pneumococcal disease (IPD) and viral infectious mononucleosis (IM) is rare. We report an infant with serotype 6C infection causing IPD occurring simultaneously with IM. A previously healthy 11-month-old girl referred to our hospital because of fever, leukopenia, and elevated C-reactive protein presented to us with disturbance of consciousness, tachycardia, tachypnea and agranulocytosis...
July 17, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28728202/-pyogenic-liver-abscess-changes-of-organisms-and-consequences-for-diagnosis-and-therapy
#10
Alexander Mischnik, Winfried Vincenz Kern, Robert Thimme
Liver abscess is a rare but potentially fatal disease with mortality rates of 2 - 12 %. The spectrum of causative microorganisms varies across the world and is changing due to increasing worldwide travel activity. As a result, previously less frequent pathogens must increasingly be considered in the differential diagnosis. The most common pathogens of liver abscess are so-called abscess streptococci, anaerobes and Gram-negative bacteria such as Escherichia coli and Klebsiella pneumoniae. Certain clones among the Gram-negatives, typically among Klebsiella spp...
July 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28726663/-peculiarities-of-community-acquired-pneumonia-in-children-with-neurological-pathology
#11
O Zubarenko, G Kopiyka, T Kravchenko, L Koval, K Gurienko
Neurological disorders in children highly affect the course of pneumonia, its outcome and the development of possible complications. The aim of the study was to reveal clinical and paraclinical features of community-acquired pneumonia in younger children with neurologic pathology infantile cerebral palsy. Under observation were 37 children with community-acquired pneumonia aged 1 to 3 years that suffered from spastic forms of infantile cerebral palsy. The comparison group consisted of 30 children with community-acquired pneumonia without any concomitant neurological pathology...
June 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28725546/pulmonary-involvement-in-adult-still-s-disease-case-report-and-brief-review-of-literature
#12
Aldo Guerrieri, Giulia Angeletti, Massimiliano Mazzolini, Ilaria Bassi, Stefano Nava
BACKGROUND: Adult onset Still disease (AOSD) is a rare condition characterized by elevated fever along with arthritic symptoms, elevated polymorphonuclear neutrophil count, evanescent rash, and hyperferritinemia. Diagnosis can be made only after have ruled out more frequent conditions, and Yamagouchi or Fautrel criteria should be applied. Parenchimal lung involvement (PLI) is present in less than 5% of AOSD cases and ranges from aspecific reticular interstitial opacities to life threatening conditions, such as acute respiratory distress syndrome (ARDS)...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28723870/osteoarticular-infections-caused-by-streptococcus-pneumoniae-in-children-in-the-post-pneumococcal-conjugate-vaccine-era
#13
Liset Olarte, Jose Romero, William Barson, John Bradley, Philana Ling Lin, Laurence Givner, Tina Tan, Jill Hoffman, Kristina G Hultén, Edward O Mason, Sheldon L Kaplan
BACKGROUND: Pneumococcal osteoarticular infections (OAI) are an uncommon manifestation of invasive pneumococcal disease (IPD). We describe the demographic characteristics, hospitalization rate, serotype distribution and antibiotic susceptibility of children with pneumococcal OAI over a 16-year period. METHODS: We identified patients ≤18 years old with pneumococcal OAI at 8 children's hospitals in the United States (2000-2015). Pneumococcal isolates were collected prospectively...
July 18, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28723778/thoracic-splenosis-mimicking-a-pleuropneumonia-a-case-report
#14
Aurélie Baldolli, Solène Coeuret, Vincent Le Pennec, Denis Agostini, Renaud Verdon
RATIONALE: Splenosis is the development of one or more heterotopic splenic tissue autoimplants following rupture of the spleen and remains mostly asymptomatic. PATIENT CONCERNS: We report a case of a 50-year old post-traumatic splenectomized man admitted for a left side community acquired pneumonia resistant to antibiotics. DIAGNOSES: The diagnosis of intrathoracic ectopic spleen was suspected because of the history of spleen trauma with diaphragm rupture and the absence of Howell-Jolly bodies...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28723269/identification-of-antipneumococcal-molecules-effective-against-different-streptococcus-pneumoniae-serotypes-using-a-resazurin-based-high-throughput-screen
#15
Hyung Jun Kim, Namyoul Kim, David Shum, Srigouri Huddar, Chul Min Park, Soojin Jang
Streptococcus pneumoniae is a major human pathogen, causing around 1.6 million deaths worldwide each year. By optimizing a resazurin-based assay to detect S. pneumoniae growth in 384-well microplates, we developed a new high-throughput screening (HTS) system for the discovery of antipneumococcal molecules, which was unsuccessful using conventional absorbance measurements. Before applying our protocol to a large-scale screen, we validated the system through a pilot screen targeting about 7,800 bioactive molecules using three different S...
July 2017: Assay and Drug Development Technologies
https://www.readbyqxmd.com/read/28722638/antibiotic-resistance-in-young-children-in-kilosa-district-tanzania-4-years-after-mass-distribution-of-azithromycin-for-trachoma-control
#16
Evan M Bloch, Sheila K West, Kasubi Mabula, Jerusha Weaver, Zakayo Mrango, Beatriz Munoz, Thomas Lietman, Christian Coles
Mass administration of azithromycin (MDA) is integral to trachoma control. Recent studies suggest that MDA may increase drug-resistant pathogens, yet findings from prior studies suggest little long-term impact on resistance. This disparity may be linked to differences in pre-MDA community-level resistance patterns. We describe carriage prevalence and antibiotic resistance patterns for Streptococcus pneumoniae (Spn) (nasopharyngeal swab collection), Staphylococcus aureus (SA) (nasopharyngeal swabs), and Escherichia coli (EC) (rectal swabs) in 1,047 children ages 1-59 months in a district with MDA cessation 4 years ago...
July 3, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28719657/isolation-and-in-vitro-evaluation-of-bacteriophages-against-mdr-bacterial-isolates-from-septic-wound-infections
#17
Roja Rani Pallavali, Vijaya Lakshmi Degati, Dakshayani Lomada, Madhava C Reddy, Vijaya Raghava Prasad Durbaka
Multi-drug resistance has become a major problem for the treatment of pathogenic bacterial infections. The use of bacteriophages is an attractive approach to overcome the problem of drug resistance in several pathogens that cause fatal diseases. Our study aimed to isolate multi drug resistant bacteria from patients with septic wounds and then isolate and apply bacteriophages in vitro as alternative therapeutic agents. Pus samples were aseptically collected from Rajiv Gandhi Institute of Medical Science (RIMS), Kadapa, A...
2017: PloS One
https://www.readbyqxmd.com/read/28717120/new-delhi-metallo-beta-lactamase-ndm-1-producing-klebsiella-pneumoniae-isolated-from-a-burned-patient
#18
Santiago Petersen-Morfin, Paola Bocanegra-Ibarias, Rayo Morfin-Otero, Elvira Garza-González, Hector Raul Perez-Gomez, Esteban González-Diaz, Sergio Esparza-Ahumada, Gerardo León-Garnica, Gabriel Amezcua-Salazar, Eduardo Rodriguez-Noriega
BACKGROUND Infections affecting burn patients are frequently caused by Staphylococcus aureus, Pseudomonas aeruginosa, and Enterobacteriaceae species. Infections with these pathogens have become increasingly difficult to treat due to evolving antibiotic resistance mechanisms, including the production of carbapenemases. CASE REPORT The present case report describes the evolution of a burn patient with polymicrobial healthcare-associated burn infections, including a bloodstream infection due to an emergent multidrug-resistant New Delhi metallo-beta-lactamase (NDM-1)-producing Klebsiella pneumoniae...
July 18, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28716776/increased-risk-for-thionamide-induced-agranulocytosis-in-elderly-patients-a-case-presentation-and-literature-review
#19
Sumera Bukhari, Muhammad Khan, Naresh Kumar, Vinuta Mohan
Thionamides, such as methimazole and propylthiouracil, are used for the management of hyperthyroidism. Agranulocytosis is a rare adverse effect of thionamides and elderly patients are especially vulnerable. Here we discuss a case of an 80-year-old woman who developed agranulocytosis and pneumonia approximately 4 weeks after starting low dose methimazole therapy. Despite aggressive treatment with broad-spectrum antibiotics and granulocyte colony stimulating factor, she developed multiorgan failure and died. Our goals are to identify risk factors common to elderly patients and hopefully improve outcomes in this population when prescribed thionamides...
July 17, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28716451/multidrug-resistant-pseudomonas-aeruginosa-lower-respiratory-tract-infections-in-the-intensive-care-unit-prevalence-and-risk-factors
#20
Trang D Trinh, Evan J Zasowski, Kimberly C Claeys, Abdalhamid M Lagnf, Shravya Kidambi, Susan L Davis, Michael J Rybak
Intensive care unit (ICU) admission is a risk for multidrug-resistant (MDR) Pseudomonas aeruginosa, but factors specific to critically ill pneumonia patients are not fully characterized. Objective was to determine risk factors associated with MDR P. aeruginosa pneumonia among ICU patients. This was a retrospective case-control study of P. aeruginosa pneumonia in the ICU; cystic fibrosis and colonizers were excluded. Risk factors included comorbid conditions and prior healthcare exposure (anti-pseudomonal antibiotics, hospitalizations, nursing home, P...
June 19, 2017: Diagnostic Microbiology and Infectious Disease
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