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https://www.readbyqxmd.com/read/28526094/patients-with-community-acquired-bacteremia-of-unknown-origin-clinical-characteristics-and-usefulness-of-microbiological-results-for-therapeutic-issues-a-single-center-cohort-study
#1
Johan Courjon, Elisa Demonchy, Nicolas Degand, Karine Risso, Raymond Ruimy, Pierre-Marie Roger
Bacteremia of unknown origin (BUO) are associated with increased mortality compared to those with identified sources. Microbiological data of those patients could help to characterize an appropriate empirical antibiotic treatment before bloodcultures results are available during sepsis of unknown origin. Based on the dashboard of our ward that prospectively records several parameters from each hospitalization, we report 101 community-acquired BUO selected among 1989 bacteremic patients from July 2005 to April 2016, BUO being defined by the absence of clinical and paraclinical infectious focus and no other microbiological samples retrieving the bacteria isolated from blood cultures...
May 19, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28509506/anti-inflammatory-and-regenerative-effects-of-albanian-propolis-in-experimental-vital-amputations
#2
Aida Meto, Agron Meto, Bora Bimbari, Kastriot Shytaj, Mutlu Özcan
This study evaluated the effects of Albanian propolis on the inflamed pulpal tissue after pulpotomy in piglets. In five piglets, two teeth each were infected using special pathogenic microbial flora that was prepared in advance in order to cause inflammation of the pulp. Pulpotomy was performed in the maxillary and mandibular central and lateral incisors. Microbial flora pathogenesis prepared from the section of infected teeth, containing Staphylococcus aureus, Streptococcus viridans, Enterococcus faecalis, Staphylococcus albus and mixed flora were used to cause artificial pulpitis...
September 2016: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28482820/the-changing-epidemiology-and-clinical-features-of-infective-endocarditis-a-retrospective-study-of-196-episodes-in-a-teaching-hospital-in-china
#3
Wan Zhu, Qian Zhang, Jingping Zhang
BACKGROUND: Infective endocarditis is an uncommon but life-threatening infectious disease. To our knowledge, current investigations of the characteristics of infective endocarditis in our region are scarce. In this study, we aimed to investigate the changes in the epidemiology and clinical features of infective endocarditis. METHODS: A retrospective analysis of clinical data was performed using 196 infective endocarditis cases diagnosed between June 2004 and December 2012 at The First Affiliated Hospital of China Medical University...
May 8, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28480269/globicatella-sanguinis-osteomyelitis-and-bacteremia-review-of-an-emerging-human-pathogen-with-an-expanding-spectrum-of-disease
#4
Andy O Miller, Seanne P Buckwalter, Michael W Henry, Fann Wu, Katherine F Maloney, Bisrat K Abraham, Barry J Hartman, Barry D Brause, Susan Whittier, Thomas J Walsh, Audrey N Schuetz
BACKGROUND: Globicatella sanguinis is an uncommon pathogen that may be misdiagnosed as viridans group streptococci. We review the literature of Globicatella and report 2 clinical cases in which catalase-negative Gram-positive cocci resembling viridans group streptococci with elevated minimum inhibitory concentrations (MICs) to ceftriaxone were inconsistently identified phenotypically, with further molecular characterization and ultimate identification of G sanguinis. METHODS: Two clinical strains (from 2 obese women; 1 with a prosthetic hip infection and the other with bacteremia) were analyzed with standard identification methods, followed by matrix-assisted laser desorption ionization time-of-flight mass spectrometry, 16S recombinant ribonucleic acid (rRNA), and sodA polymerase chain reaction (PCR)...
2017: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/28475731/evaluation-of-daptomycin-combinations-with-cephalosporins-or-gentamicin-against-streptococcus-mitis-group-strains-in-an-in-vitro-model-of-simulated-endocardial-vegetations-sevs
#5
Juwon Yim, Jordan R Smith, Nivedita B Singh, Seth Rice, Kyle Stamper, Cristina Garcia de la Maria, Arnold S Bayer, Nagendra N Mishra, José M Miró, Truc T Tran, Cesar A Arias, Paul Sullam, Michael J Rybak
Objectives: Among viridans group streptococcal infective endocarditis (IE), the Streptococcus mitis group is the most common aetiological organism. Treatment of IE caused by the S. mitis group is challenging due to the high frequency of β-lactam resistance, drug allergy and intolerability of mainstay antimicrobial agents such as vancomycin or gentamicin. Daptomycin has been suggested as an alternative therapeutic option in these scenarios based on its excellent susceptibility profile against S...
May 5, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28442374/peritonsillar-and-deep-neck-infections-a-review-of-330-cases
#6
Paula Martínez Pascual, Paloma Pinacho Martinez, Eviatar Friedlander, Carlos Martin Oviedo, Bartolome Scola Yurrita
INTRODUCTION: Deep neck infections (DNI) are defined as suppurative infectious processes of deep visceral spaces of the neck. OBJECTIVE: The aim of this study is to review different factors that may influence peritonsillar and deep neck Infections (DNI) and may play a role as bad prognosis predictors. METHODS: We present a retrospective study of 330 patients with DNI and peritonsillar infections who were admitted between January 2005 and December 2015 in a tertiary referral hospital...
April 9, 2017: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28439680/microbiological-evaluation-of-infected-pelvic-lymphocele-after-robotic-prostatectomy-potential-predictors-for-culture-positivity-and-selection-of-the-best-empirical-antimicrobial-therapy
#7
Alaa Hamada, Catalina Hwang, Jorge Fleisher, Ingolf Tuerk
OBJECTIVES: To examine symptomatology and microbiology of infected lymphocele (LC) post-robotic-assisted radical prostatectomy and pelvic lymph node dissection (PLND) and to assess for potential predictors for LC fluid culture positivity. Secondly, to provide general recommendations about use of select antimicrobial therapy. METHODS: This was a single-center, IRB-approved, retrospective, case series review conducted between October 2008 and October 2014. Data included symptomatology, microbiology of symptomatic LC in men post-robotic prostatectomy and PLND...
April 24, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28439602/antibiogram-profile-of-septic-meningitis-among-children-in-duhok-iraq
#8
Abdulrahman T Saadi, Nadir A Garjees, Aveen H Rasool
  To determine the prevalence of bacteria in the cerebrospinal fluid (CSF), and the antibiogram profile in pediatric patients with suspected meningitis. Methods: This descriptive study was conducted between January 2014 and January 2016 in the Hevi Paediatric Teaching Hospital in Duhok, Iraq. The CSF samples were withdrawn from 432 pediatric patients suspected of meningitis. The samples were cultured, and antibiotic sensitivity tests were performed.  Results: There were 33 (7.6%) culture positive cases among 432 CSF samples...
May 2017: Saudi Medical Journal
https://www.readbyqxmd.com/read/28427348/comparative-genomics-and-evolution-of-the-amylase-binding-proteins-of-oral-streptococci
#9
Elaine M Haase, Yurong Kou, Amarpreet Sabharwal, Yu-Chieh Liao, Tianying Lan, Charlotte Lindqvist, Frank A Scannapieco
BACKGROUND: Successful commensal bacteria have evolved to maintain colonization in challenging environments. The oral viridans streptococci are pioneer colonizers of dental plaque biofilm. Some of these bacteria have adapted to life in the oral cavity by binding salivary α-amylase, which hydrolyzes dietary starch, thus providing a source of nutrition. Oral streptococcal species bind α-amylase by expressing a variety of amylase-binding proteins (ABPs). Here we determine the genotypic basis of amylase binding where proteins of diverse size and function share a common phenotype...
April 20, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28418794/microbial-diversity-in-milk-of-women-with-mastitis-potential-role-of-coagulase-negative-staphylococci-viridans-group-streptococci-and-corynebacteria
#10
Pilar Mediano, Leonides Fernández, Esther Jiménez, Rebeca Arroyo, Irene Espinosa-Martos, Juan M Rodríguez, María Marín
BACKGROUND: Lactational mastitis constitutes a significant cause of premature weaning. However, its etiology, linked to the presence of pathogenic microorganisms, has been scarcely reported. Research aim: The aim of this study was to describe the microbial diversity in milk samples from women suffering from lactational mastitis and to identify more accurately a collection of isolates belonging to coagulase-negative staphylococci, streptococci, and coryneform bacteria. METHODS: This is a cross-sectional descriptive one-group study...
May 2017: Journal of Human Lactation: Official Journal of International Lactation Consultant Association
https://www.readbyqxmd.com/read/28411005/bacterial-and-histopathological-findings-in-deep-head-and-neck-infections-a-retrospective-analysis
#11
Robert Cordesmeyer, Philipp Kauffmann, Tröltzsch Markus, Christian Sömmer, Helmut Eiffert, Felix Bremmer, Rainer Laskawi
OBJECTIVES: Deep neck infections are among the most dangerous acute diseases in the head and neck region. This analysis gives an overview of the bacterial and histopathologic findings of deep neck infections. STUDY DESIGN: From January 2002 to December 2012, 63 patients were diagnosed with and treated for deep neck infections at the University Medical Center Göttingen. Bacterial and histopathologic examinations were made, and the occurrence of bacterial pathogens and histopathologic findings were analyzed...
February 20, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28399945/a-prospective-holistic-multicenter-approach-to-tracking-and-understanding-bloodstream-infections-in-pediatric-hematology-oncology-patients
#12
Aditya H Gaur, David G Bundy, Eric J Werner, Jeffrey D Hord, Marlene R Miller, Li Tang, John P Lawlor, Amy L Billett
OBJECTIVE To assess the burden of bloodstream infections (BSIs) among pediatric hematology-oncology (PHO) inpatients, to propose a comprehensive, all-BSI tracking approach, and to discuss how such an approach helps better inform within-center and across-center differences in CLABSI rate DESIGN Prospective cohort study SETTING US multicenter, quality-improvement, BSI prevention network PARTICIPANTS PHO centers across the United States who agreed to follow a standardized central-line-maintenance care bundle and track all BSI events and central-line days every month...
April 12, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/28387901/endocarditis-sustained-by-streptococcus-viridans-with-normal-levels-of-procalcitonin-an-unexpected-finding
#13
G Merra, D Marsiliani, S Di Giambenedetto, F Franceschi
OBJECTIVE: Procalcytonin is a useful marker of bacterial infections. Several studies have reported elevated serum levels of PCT in patients with infective endocarditis (IE) and/or other infections sustained by cocci. We report a rare case of IE attributed to Streptococcus viridans in whom levels of PCT were normal. CASE REPORT: A 67 years-old male was admitted to the Emergency Department for a 25-day history of recurring night fever. Upon admission, patient underwent blood test, including PCT, showing normal levels, except for a slight increased creatinine concentration (1...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28331804/infected-ascites-distinguishing-secondary-peritonitis-from-spontaneous-bacterial-peritonitis-in-a-cirrhotic-patient-with-classic-symptoms
#14
Marvin Louis Roy Lu, Akanksha Agarwal, Josh Sloan, Aaron Kosmin
INTRODUCTION: Spontaneous bacterial peritonitis can be differentiated from secondary bacterial peritonitis by the absence of a surgically treatable intra-abdominal source of infection. However, oftentimes this is unapparent and other clinical clues need to be sought after to make the right diagnosis. CASE: A 64-year-old woman was admitted because of three days of worsening diffuse abdominal pain and distention. She was morbidly obese and had a history of non-alcoholic steatohepatitis (NASH) cirrhosis...
2017: IDCases
https://www.readbyqxmd.com/read/28321788/characteristics-of-aerococcus-viridans-isolated-from-bovine-subclinical-mastitis-and-its-effect-on-milk-scc-yield-and-composition
#15
Meng Sun, Jian Gao, Tariq Ali, Dan Yu, Shiyao Zhang, Saeed U Khan, Séamus Fanning, Bo Han
Aerococcus viridians (A. viridans), an environmental Gram-positive bacterium, has been documented to be associated with bovine mastitis. However, its exact role in bovine mastitis and the changes it brings about in milk characteristics are not yet known. The objectives of the current study were to describe the antibiotic resistance of A. viridans from bovine mastitis as well as the correlation between existence of this pathogen in udders and the somatic cell counts (SCC), daily milk yield, and composition of individual cow...
March 20, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28284306/an-improved-amperometric-triglyceride-biosensor-based-on-co-immobilization-of-nanoparticles-of-lipase-glycerol-kinase-and-glycerol-3-phosphate-oxidase-onto-pencil-graphite-electrode
#16
Vinay Narwal, C S Pundir
Nanoparticles (NPs) of commercial lipase from Candida rugosa, of glycerol kinase (GK) from Cellulomonas species, of glycerol-3- phosphate oxidase (GPO) from Aerococcus viridans were prepared, characterized and co-immobilized onto a pencil graphite (PG) electrode. The morphological and electrochemical characterization of PG electrode was performed by scanning electron microscopy (SEM), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) before and after co-immobilization of enzyme nanoparticles (ENPs)...
May 2017: Enzyme and Microbial Technology
https://www.readbyqxmd.com/read/28283005/-comparison-of-maldi-tof-and-16s-rrna-methods-in-identification-of-viridans-group-streptococci
#17
Serap Süzük Yıldız, Banu Kaşkatepe, Salih Altınok, Mustafa Çetin, Alper Karagöz, Sümeyra Savaş
Accurate identification of viridans group streptococci (VGS) frequently encountered as a causative agent of infective endocarditis is always a challenge for the clinical microbiology laboratory. Clinical microbiology laboratories generally use semi automatic/full automatic systems, molecular methods and also conventional methods for the identification of these bacteria. There are recent published studies that have used MALDI-TOF (Matrix Assisted Laser Ionization Mass Spectrometry-Time of Flight) systems in the identification of VGS...
January 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28279319/infective-endocarditis-risk-after-percutaneous-pulmonary-valve-implantation-with-the-melody-and%C3%A2-sapien%C3%A2-valves
#18
Sebastien Hascoet, Lucia Mauri, Caroline Claude, Emmanuelle Fournier, Julie Lourtet, Jean-Yves Riou, Philippe Brenot, Jérôme Petit
OBJECTIVES: This study compared the risk of infective endocarditis (IE) after percutaneous pulmonary valve implantation (PPVI) with the Sapien and Melody valves. BACKGROUND: The incidence of IE after PPVI is estimated at 3% per year with the Melody valve. The Sapien valve is a more recently marketed valve used for PPVI. METHODS: We retrospectively included consecutive patients who underwent PPVI at a single center between 2008 and 2016. IE was diagnosed using the modified DUKE criteria...
March 13, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28273968/aerococcus-viridans-a-rare-pathogen-causing-urinary-tract-infection
#19
Balvinder Mohan, Kamran Zaman, Naveen Anand, Neelam Taneja
Aerococci are Gram-positive cocci with colony morphology similar to viridans streptococci. Most often these isolates in clinical samples are misidentified and considered insignificant. However, with the use newer techniques like Matrix-Assisted Laser Desorption Ionization Time-of-Flight Mass-Spectrometry (MALDI-TOF MS), aerococci have been recognized as significant human pathogens capable of causing a diverse spectrum of infections. Among the different species of aerococci, Aerococcus urinae is the most common agent causing Urinary Tract Infection (UTI) followed by A...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28264848/impact-of-high-level-daptomycin-resistance-in-the-streptococcus-mitis-group-on-virulence-and-survivability-during-daptomycin-treatment-in-experimental-infective-endocarditis
#20
C Garcia-de-la-Maria, Y Q Xiong, J M Pericas, Y Armero, A Moreno, N N Mishra, M J Rybak, T T Tran, C A Arias, P M Sullam, A S Bayer, J M Miro
Among the viridans group streptococci, the Streptococcus mitis group is the most common cause of infective endocarditis. These bacteria have a propensity to be β-lactam resistant, as well as to rapidly develop high-level and durable resistance to daptomycin (DAP). We compared a parental, daptomycin-susceptible (DAP(s)) S. mitis/S. oralis strain and its daptomycin-resistant (DAP(r)) variant in a model of experimental endocarditis in terms of (i) their relative fitness in multiple target organs in this model (vegetations, kidneys, spleen) when animals were challenged individually and in a coinfection strategy and (ii) their survivability during therapy with daptomycin-gentamicin (an in vitro combination synergistic against the parental strain)...
May 2017: Antimicrobial Agents and Chemotherapy
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