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Medical microbiology

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https://www.readbyqxmd.com/read/28231023/increasing-nocardia-incidence-associated-with-bronchiectasis-at-a-tertiary-care-center
#1
Michael H Woodworth, Jennifer L Saullo, Paul M Lantos, Gary M Cox, Jason E Stout
RATIONALE: Nocardia is a genus of pathogens that most commonly afflicts immunocompromised hosts, but may be an emerging infection among persons with bronchiectasis. OBJECTIVES: To examine the epidemiology and clinical presentation of adult patients with Nocardia and bronchiectasis relative to other patient groups. METHODS: We examined a retrospectively-assembled cohort of adults at Duke University Hospital in Durham, North Carolina with at least one positive culture from a bodily fluid or tissue specimen for Nocardia between January 1996 and December 2013...
February 23, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28220379/pulmonary-mucormycosis-clinical-features-and-outcomes
#2
Erica Lin, Teng Moua, Andrew H Limper
PURPOSE: Mucormycosis encompasses a group of opportunistic fungal infections caused by Zygomycetes, order Mucorales. Mucormycosis can manifest as rhino-orbito-cerebral, pulmonary, gastrointestinal, cutaneous, and disseminated infections. Pulmonary mucormycosis is the second most common presentation. This manuscript characterizes the demographics, clinical presentation, diagnostic procedures, radiologic findings, therapeutic interventions, and outcome in pulmonary mucormycosis. METHODS: We retrospectively reviewed clinical data of 35 patients with pulmonary mucormycosis from 2000 to 2015...
February 20, 2017: Infection
https://www.readbyqxmd.com/read/28218980/microbiologic-yield-of-bronchoalveolar-lavage-specimens-from-stem-cell-transplant-recipients
#3
Kenneth K Sakata, Christine L Klassen, Kathryn B Bollin, Thomas E Grys, James L Slack, Lewis J Wesselius, Holenarasipur R Vikram
PURPOSE: Stem cell transplant (SCT) recipients commonly undergo bronchoalveolar lavage (BAL) collection as an infectious pulmonary work-up. Previous studies report the utility and overall diagnostic yield of fiberoptic bronchoscopy with BAL in this vulnerable population, though none focused purely on microbiologic yield or made comparisons with less invasive means of pathogen detection. We sought to determine and elaborate on the microbiologic yield of BAL in SCT recipients, assess a correlation between BAL studies and less invasive means of pathogen detection, and assess the utility of repeating a BAL within 30 days...
February 20, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28216180/utility-of-16s-rrna-pcr-performed-on-clinical-specimens-in-patient-management
#4
A Akram, M Maley, I Gosbell, T Nguyen, R Chavada
BACKGROUND: Broad range PCR 16S rRNA can be used for detection and identification of bacteria from clinical specimens in patients with high suspicion of infection and negative cultures. Aim of this study was 1) to compare 16S rRNA PCR (16S) results with microbiological cultures 2) to assess utility of 16S on antimicrobial therapy 3) to compare the yield of 16S on different type of clinical specimen and cost analysis of test. METHODS: A retrospective study was done on different clinical specimens which had 16S performed over 3 years (2012-2015)...
February 16, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28208859/diphtheroids-important-nosocomial-pathogens
#5
Reshmi Chandran, Dinju Raj Puthukkichal, Ethel Suman, Shashidhar Kotian Mangalore
INTRODUCTION: Diphtheroids are defined as aerobic, non-sporulating, pleomorphic Gram-positive bacilli which are more uniformly stained than Corynebacterium diphtheriae, lack the metachromatic granules and are arranged in a palisade manner. They are usually commensals of the skin and mucous membranes. They differ from C.diphtheriae in biochemical rea-ctions as well as in toxin production. Since, they are usually found as commensals on the skin, they are often considered as mere contaminants when isolated from clinical samples...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208857/emergence-of-hospital-acquired-carbapenem-resistant-non-fermenters-in-teaching-institute
#6
Hariom Sharan, Neeraj Katare, Aparna Pandey, Ganesh Shivmurti Bhatambare, Trupti Bajpai
INTRODUCTION: Non-Fermenting Gram Negative Bacilli (NFGNB) are emerging now-a-days because of their tendency to colonize various surfaces and inherent resistance to commonly used disinfectants. They are responsible for multi-drug resistant hospital acquired infections. Detection of carbapenem resistance mechanisms is essential for treatment and infection control purpose as can spread to other organisms causing hospital outbreaks. AIM: To characterize non-fermenters from various clinical samples and to detect different carbapenem resistance mechanisms in meropenem resistant isolates...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208855/dengue-an-analysis-of-epidemiological-pattern-over-a-six-year-period
#7
Nidhi Singla, Preeti Chaudhary, Monika Thakur, Jagdish Chander
INTRODUCTION: Dengue is an arboviral infection transmitted among humans by Aedes aegypti, the urban vector and Aedes albopictus as a maintenance vector in sub-urban and rural areas. The diagnosis is routinely established by detection of NS1 antigen and/or by IgM antibodies testing. Dengue infects 50-100 million cases per year worldwide with atleast half million serious cases needing hospitalization. Therefore, it is necessary to keep the surveillance ongoing to timely look out for changes occurring in disease pattern over a geographical area...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208268/medical-swab-analysis-using-desorption-electrospray-ionization-mass-spectrometry-a-noninvasive-approach-for-mucosal-diagnostics
#8
Pamela Pruski, David A MacIntyre, Holly V Lewis, Paolo Inglese, Gonçalo D S Correia, Trevor T Hansel, Phillip R Bennett, Elaine Holmes, Zoltan Takats
Medical swabs are routinely used worldwide to sample human mucosa for microbiological screening with culture methods. These are usually time-consuming and have a narrow focus on screening for particular microorganism species. As an alternative, direct mass spectrometric profiling of the mucosal metabolome provides a broader window into the mucosal ecosystem. We present for the first time a minimal effort/minimal-disruption technique for augmenting the information obtained from clinical swab analysis with mucosal metabolome profiling using desorption electrospray ionization mass spectrometry (DESI-MS) analysis...
February 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28207869/impact-of-wall-shear-stress-on-initial-bacterial-adhesion-in-rotating-annular-reactor
#9
Thibaut Saur, Emilie Morin, Frédéric Habouzit, Nicolas Bernet, Renaud Escudié
The objective of this study was to investigate the bacterial adhesion under different wall shear stresses in turbulent flow and using a diverse bacterial consortium. A better understanding of the mechanisms governing microbial adhesion can be useful in diverse domains such as industrial processes, medical fields or environmental biotechnologies. The impact of wall shear stress-four values ranging from 0.09 to 7.3 Pa on polypropylene (PP) and polyvinyl chloride (PVC)-was carried out in rotating annular reactors to evaluate the adhesion in terms of morphological and microbiological structures...
2017: PloS One
https://www.readbyqxmd.com/read/28205159/deficits-in-knowledge-attitude-and-practice-towards-blood-culture-sampling-results-of-a-nationwide-mixed-methods-study-among-inpatient-care-physicians-in-germany
#10
Heike Raupach-Rosin, Arne Duddeck, Maike Gehrlich, Charlotte Helmke, Johannes Huebner, Mathias W Pletz, Rafael Mikolajczyk, André Karch
PURPOSE: Blood culture (BC) sampling rates in Germany are considerably lower than recommended. Aim of our study was to assess knowledge, attitudes, and practice of physicians in Germany regarding BC diagnostics. METHODS: We conducted a cross-sectional mixed-methods study among physicians working in inpatient care in Germany. Based on the results of qualitative focus groups, a questionnaire-based quantitative study was conducted in 2015-2016. In total, 706 medical doctors and final-year medical students from 11 out of 16 federal states in Germany participated...
February 15, 2017: Infection
https://www.readbyqxmd.com/read/28190506/regulatory-strategies-to-facilitate-surgical-innovation
#11
Phoebe Mounts
Phoebe Mounts, PhD, Esq, is a partner in the Food and Drug Administration Practice Group in the Washington, DC, office of Morgan Lewis & Bockius LLP. She counsels clients on regulatory issues for medical devices, drugs, and biologics. Prior to joining Morgan Lewis, she was on the faculty of the Johns Hopkins University School of Public Health in the Department of Molecular Microbiology, Immunology, and Infectious Diseases. Although she is a partner in the FDA Practice Group at Morgan Lewis, the views expressed in this article are hers and should not be attributed to the Firm...
March 2017: Surgery
https://www.readbyqxmd.com/read/28188052/-saccharomyces-cerevisiae-invasive-infection-the-first-reported-case-in-morocco
#12
A Maleb, E Sebbar, M Frikh, S Boubker, A Moussaoui, A El Mekkaoui, W Khannoussi, G Kharrasse, B Belefquih, A Lemnouer, Z Ismaili, M Elouennass
Saccharomyces cerevisiae is a cosmopolitan yeast, widely used in agro-alimentary and pharmaceutical industry. Its impact in human pathology is rare, but maybe still underestimated compared to the real situation. This yeast is currently considered as an emerging and opportunistic pathogen. Risk factors are immunosuppression and intravascular device carrying. Fungemias are the most frequent clinical forms. We report the first case of S. cerevisiae invasive infection described in Morocco, and to propose a review of the literature cases of S...
February 7, 2017: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/28187059/clinical-and-microbiologic-characteristics-of-early-onset-sepsis-among-vlbw-infants-opportunities-for-antibiotic-stewardship
#13
Sagori Mukhopadhyay, Karen M Puopolo
BACKGROUND: Most very-low birth weight (birth weight <1500 grams, VLBW) infants receive empiric antibiotics for risk of early-onset sepsis (EOS). The objective of this study was to determine the characteristics of VLBW infants with culture-confirmed EOS at a single center during 25 years, to identify opportunities for antibiotic stewardship. METHODS: Retrospective cohort study including VLBW infants admitted from 1990-2015. EOS was defined as isolation of a pathogen in blood or cerebrospinal fluid culture obtained < 72 hours of age...
February 9, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28185802/infection-in-burn-patients-in-a-referral-center-in-colombia
#14
Carlos Enrique Ramirez-Blanco, Carlos Enrique Ramirez-Rivero, Luis Alfonso Diaz-Martinez, Luis Miguel Sosa-Avila
INTRODUCTION: Worldwide, burns are responsible for more than 300,000 deaths annually; infection is a major cause of morbidity and mortality in these patients. Early identification and treatment of infection improves outcome. Toward this end it's necessary to identify the institutions flora and organisms that most frequently produces infection. OBJECTIVES: To characterize infections developed by burn patients hospitalized at the University Hospital of Santander (HUS)...
February 6, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28178916/development-of-an-interdisciplinary-pre-matriculation-program-designed-to-promote-medical-students-self-efficacy
#15
Anna Wirta Kosobuski, Abigail Whitney, Andrew Skildum, Amy Prunuske
BACKGROUND AND OBJECTIVES: A four-week interdisciplinary pre-matriculation program for Native American and rural medical students was created and its impact on students' transition to medical school was assessed. The program extends the goals of many pre-matriculation programs by aiming to increase not only students' understanding of basic science knowledge, but also to build student self-efficacy through practice with medical school curricular elements while developing their academic support networks...
2017: Medical Education Online
https://www.readbyqxmd.com/read/28169013/cost-analysis-of-an-outbreak-of-clostridium-difficile-infection-ribotype-027-in-a-dutch-tertiary-care-centre
#16
Y H van Beurden, M K Bomers, S D van der Werff, E A P M Pompe, S Spiering, C M J E Vandenbroucke-Grauls, C J J Mulder
BACKGROUND: The economic impact of Clostridium difficile infection (CDI) on the healthcare system is significant. From May 2013 to May 2014, an outbreak of C. difficile ribotype 027 occurred in a Dutch tertiary care hospital, involving 72 patients. The primary aim of this study was to provide insight into the financial burden that this CDI outbreak brought upon this hospital. METHODS: A retrospective analysis was performed to estimate the costs of a one-year-long C...
December 30, 2016: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28166914/role-of-anti-tubercular-treatment-for-positive-endometrial-aspirate-dna-pcr-reproductive-outcome-in-infertile-patients-in-indian-setting-a-randomized-trial
#17
A Kriplani, A Bahadur, V Kulshrestha, N Agarwal, S Singh, U B Singh
AIMS: The aim of the study was to determine the effect of anti-tubercular therapy (ATT) versus no ATT on reproductive outcome in patients with positive endometrial aspirate DNA-PCR for tuberculosis. SETTINGS AND DESIGN: Department of Obstetrics and Gynecology in collaboration with the Department of Microbiology at the All India Institute of Medical Sciences, New Delhi, India. METHODS AND MATERIALS: This prospective randomized study was conducted on 100 women in the reproductive age group with primary or secondary infertility, attending the Gynecology OPD at AIIMS...
January 2017: Indian Journal of Tuberculosis
https://www.readbyqxmd.com/read/28162901/generation-and-composition-of-medical-wastes-from-private-medical-microbiology-laboratories
#18
Dimitrios Komilis, Nikolaos Makroleivaditis, Eftychia Nikolakopoulou
A study on the generation rate and the composition of solid medical wastes (MW) produced by private medical microbiology laboratories (PMML) was conducted in Greece. The novelty of the work is that no such information exists in the literature for this type of laboratories worldwide. Seven laboratories were selected with capacities that ranged from 8 to 88 examinees per day. The study lasted 6months and daily recording of MW weights was done over 30days during that period. The rates were correlated to the number of examinees, examinations and personnel...
February 3, 2017: Waste Management
https://www.readbyqxmd.com/read/28162845/role-of-microbiological-culture-and-polymerase-chain-reaction-pcr-of-actinomyces-in-medication-related-osteonecrosis-of-the-jaw-mronj
#19
Sappasith Panya, Riham Fliefel, Florian Probst, Matthias Tröltzsch, Michael Ehrenfeld, Sören Schubert, Sven Otto
We hypothesized that local infection plays a critical role in the pathogenesis of medication-related osteonecrosis of the jaw (MRONJ). Recent developments in molecular methods have revolutionized new approaches for the rapid detection of microorganisms including those difficult to culture. The aim of our study is to identify the bacterial profiles in MRONJ by microbiological culture and polymerase chain reactions (PCR). A retrospective analysis was performed on MRONJ patients from 2008 to 2014. The bacterial profile from MRONJ bone samples was determined using microbiological culture and PCR...
January 9, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28161135/temporomandibular-total-joint-prosthesis-infections-a-ten-year-retrospective-analysis
#20
W S McKenzie, P J Louis
A retrospective review of 178 total temporomandibular joint replacements (TJR) performed on 106 patients at the University of Alabama at Birmingham during the years 2000-2010 was completed. Data regarding sex, past medical history, prosthesis manufacturer, microbiology, antibiotic therapy, and the need for additional procedures were obtained from the medical records of patients who developed a prosthetic joint infection following TJR. Of the 106 patients, 95 (89.6%) were female and 11 (10.4%) were male. The average age of the patients was 47 years (range 19-68 years)...
February 1, 2017: International Journal of Oral and Maxillofacial Surgery
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