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Microbiology laboratory automation

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https://www.readbyqxmd.com/read/28638468/current-and-emerging-techniques-for-antibiotic-susceptibility-tests
#1
REVIEW
Karan Syal, Manni Mo, Hui Yu, Rafael Iriya, Wenwen Jing, Sui Guodong, Shaopeng Wang, Thomas E Grys, Shelley E Haydel, Nongjian Tao
Infectious diseases caused by bacterial pathogens are a worldwide burden. Serious bacterial infection-related complications, such as sepsis, affect over a million people every year with mortality rates ranging from 30% to 50%. Crucial clinical microbiology laboratory responsibilities associated with patient management and treatment include isolating and identifying the causative bacterium and performing antibiotic susceptibility tests (ASTs), which are labor-intensive, complex, imprecise, and slow (taking days, depending on the growth rate of the pathogen)...
2017: Theranostics
https://www.readbyqxmd.com/read/28566082/-femoral-hemodialysis-catheter-related-bacteremia-due-to-globicatella-sanguinis-challenges-in-species-identification
#2
Elif Aktaş, Nafia Canan Gürsoy, Tamer Sakacı, Yener Koç, Aziz Ahmad Hamidi, Emin Bulut, Duygu Erdemir, Barış Otlu
In this case, catheter-related bacteremia due to Globicatella sanguinis in a 43 years old female patient undergoing hemodialysis with the diagnosis of diabetic nephropathy was presented and the methods in the laboratory diagnosis of the rare opportunistic pathogen, Globicatella cins, were nvestigated. A set of peripheral blood cultures and simultaneous catheter culture was obtained from the patient in third of May 2016. Biochemical tests, Phoenix (Becton Dickinson, USA) and MicroScan (Beckman Coulter, USA) automated systems and matrix assisted laser desorption/ionization-time of flight-mass spectrometry (MALDI-TOF MS) based Microflex MS (Bruker, Daltonics, Germany) and VITEK MS (database v2...
April 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28566080/-molecular-epidemiology-of-human-mycobacterium-bovis-infection-in-aegean-region-turkey
#3
Cengiz Çavuşoğlu, Fethiye Ferda Yılmaz
Mycobacterium bovis, which has a broader host spectrum as opposed to Mycobacterium tuberculosis that generally causes disease in humans, mainly leads to chronic progressive pulmonary disease in a large number of domestic and wild mammals, particularly cattle. The term "zoonotic tuberculosis (TB)" is used to describe M.bovis infection in humans. "Zoonotic TB" can not be differentiated clinically, radiologically or pathologically from TB caused by M.tuberculosis. The aim of this study was to evaluate the role of M...
April 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28455579/-new-microbiological-techniques
#4
REVIEW
S Schubert, A Wieser, G Bonkat
Microbiological diagnostic procedures have changed rapidly in recent years. This is especially true in the field of molecular diagnostics. Classical culture-based techniques are still the gold standard in many areas; however, they are already complemented by automated and also molecular techniques to guarantee faster and better quality results. The most commonly used techniques include real-time polymerase chain reaction (RT-PCR) based systems and nucleic acid hybridization. These procedures are used most powerfully from direct patient samples or in assays to detect the presence of nonculturable or fastidious organisms...
April 28, 2017: Der Urologe. Ausg. A
https://www.readbyqxmd.com/read/28412378/project-management-importance-for-diagnostic-laboratories
#5
REVIEW
Antony Croxatto, Gilbert Greub
BACKGROUND: The constraints applied on diagnostic laboratories to improve both quality and productivity together with personal shortages incite laboratory managers to constantly optimize the laboratory workflows, organization and technology. These continuous modifications of the laboratories should be conducted using efficient project and change management approaches in order to maximize the opportunities to achieve the project successfully. AIM: This review aims at presenting a general overview of project management with an emphasis on selected critical aspects...
April 12, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28397472/comparison-of-novel-blood-culture-system-dl-bt112tm-with-bact-alert-3dtm-by-using-clinical-samples
#6
Mustafa Altindis, Tayfur Demiray, Mehmet Koroglu, Umit Kilic, Aybala Neslihan Alagoz, Aziz Ogutlu, Oguz Karabay
BACKGROUND: Blood cultures are the main diagnostic laboratory tool to detect bloodstream infections. Many clinical microbiology laboratories utilize automated blood culture systems to isolate infectious agents from blood samples. The diagnostic performance and time-to-detection values of the novel automated blood culture system, DLBt112TM (DL), was compared with BacT/Alert 3DTM (B3D) in this prospective comparative study with clinical samples. METHODS: A total of 356 blood culture sets (178 sets for each system) were evaluated over a 6-month period in a university hospital...
April 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28391814/antibiogramj-a-tool-for-analysing-images-from-disk-diffusion-tests
#7
C A Alonso, C Domínguez, J Heras, E Mata, V Pascual, C Torres, M Zarazaga
BACKGROUND AND OBJECTIVES: Disk diffusion testing, known as antibiogram, is widely applied in microbiology to determine the antimicrobial susceptibility of microorganisms. The measurement of the diameter of the zone of growth inhibition of microorganisms around the antimicrobial disks in the antibiogram is frequently performed manually by specialists using a ruler. This is a time-consuming and error-prone task that might be simplified using automated or semi-automated inhibition zone readers...
May 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28366154/-evaluation-of-mycobacterial-microscopy-and-culture-results-of-sureyyapasa-chest-diseases-and-chest-surgery-training-and-research-hospital-a-3-year-analysis
#8
Elçin Akduman Alaşehir, Ahmet Balıkçı, Mualla Partal, Gülay Çatmabacak, Görkem Yaman
Introduction: Effective diagnosis of tuberculosis is of great importance for transmission control and treatment success. The purpose of this study is to evaluate microscopic examination results of Ehrlich-Ziehl Neelsen (EZN) and Auramine-Rhodamine staining methods and automated BACTEC MGIT 960™ system and Löwenstein-Jensen (L-J) culture results of various clinical samples in the light of recent data from the world and Turkey. Materials and Methods: Specimens that were sent from various clinics to Sureyyapasa Chest Diseases and Chest Surgery Training and Research Hospital Microbiology Laboratory from January 2012 to December 2015 were evaluated retrospectively...
September 2016: Tüberküloz Ve Toraks
https://www.readbyqxmd.com/read/28322712/implementation-and-initial-analysis-of-a-laboratory-based-weekly-biosurveillance-system-provence-alpes-c%C3%A3-te-d-azur-france
#9
Michael Huart, Gabriel Bedubourg, Cédric Abat, Philippe Colson, Jean Marc Rolain, Hervé Chaudet, Pierre Edouard Fournier, Didier Raoult, Xavier Deparis
We describe the implementation of an automated infectious disease surveillance system that uses data collected from 210 microbiologic laboratories throughout the Provence-Alpes-Côte d'Azur region in France. Each week, these facilities report bacterial species that have been isolated from patients in their area. An alarm is triggered whenever the case count for a bacterial species infection exceeds 2 SDs of the historical mean for that species at the participating laboratory. At its inception in July 2013, the system monitored 611 bacterial species...
April 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28274291/an-audit-of-cryptosporidium-and-giardia-detection-in-scottish-national-health-service-diagnostic-microbiology-laboratories
#10
C L Alexander, S Currie, K Pollock, A Smith-Palmer, B L Jones
Giardia duodenalis and Cryptosporidium species are protozoan parasites capable of causing gastrointestinal disease in humans and animals through the ingestion of infective faeces. Whereas Cryptosporidium species can be acquired locally or through foreign travel, there is the mis-conception that giardiasis is considered to be largely travel-associated, which results in differences in laboratory testing algorithms. In order to determine the level of variation in testing criteria and detection methods between diagnostic laboratories for both pathogens across Scotland, an audit was performed...
June 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28271567/the-welsh-blood-service-70-years-of-continuous-change
#11
REVIEW
G D Poole
The National Blood Transfusion Service (NBTS) in England and Wales was established as a single entity in 1946 and operated as such for almost half a century. During those 50 years, the blood service in Wales, as in the rest of the UK, saw many technological and operational changes. The automation of donation testing, the introduction of successive layers of microbiological screening, the creation of the Tissue Typing Laboratory (later renamed the Welsh Transplantation and Immunogenetics Laboratory) and the development of information technology brought - over a relatively long period - highly significant improvements to an organisation that had begun life as an Emergency Medical Service...
March 8, 2017: Transfusion Medicine
https://www.readbyqxmd.com/read/28214393/flow-cytometric-bacterial-cell-counts-challenge-conventional-heterotrophic-plate-counts-for-routine-microbiological-drinking-water-monitoring
#12
REVIEW
S Van Nevel, S Koetzsch, C R Proctor, M D Besmer, E I Prest, J S Vrouwenvelder, A Knezev, N Boon, F Hammes
Drinking water utilities and researchers continue to rely on the century-old heterotrophic plate counts (HPC) method for routine assessment of general microbiological water quality. Bacterial cell counting with flow cytometry (FCM) is one of a number of alternative methods that challenge this status quo and provide an opportunity for improved water quality monitoring. After more than a decade of application in drinking water research, FCM methodology is optimised and established for routine application, supported by a considerable amount of data from multiple full-scale studies...
April 15, 2017: Water Research
https://www.readbyqxmd.com/read/28164570/time-to-detection-comparison-for-a-novel-blood-culture-system-using-simulated-blood-cultures-dltm-versus-bact-alerttm-and-bactectm
#13
Tayfur Demiray, Mehmet Koroglu, Mustafa Altindis
BACKGROUND: Automated blood culture systems are routinely used in microbiology laboratories to isolate bacteria and fungi causing bloodstream infections. A novel automated blood culture system, DL-Bt112TM (DL) was compared with the BACTEC 9050TM (BCT) and BacT/Alert 3DTM (B3D) systems for time-to-detection (TTD) using 10 different clinical bacteria that commonly cause bloodstream infections. METHODS: Simulated blood cultures were used to compare the three automated blood culture systems...
September 1, 2016: Clinical Laboratory
https://www.readbyqxmd.com/read/28129707/fluorescence-in-situ-hybridization-fish-in-the-microbiological-diagnostic-routine-laboratory-a-review
#14
REVIEW
Hagen Frickmann, Andreas Erich Zautner, Annette Moter, Judith Kikhney, Ralf Matthias Hagen, Henrik Stender, Sven Poppert
Early identification of microbial pathogens is essential for rational and conservative antibiotic use especially in the case of known regional resistance patterns. Here, we describe fluorescence in situ hybridization (FISH) as one of the rapid methods for easy identification of microbial pathogens, and its advantages and disadvantages for the diagnosis of pathogens in human infections in the laboratory diagnostic routine. Binding of short fluorescence-labeled DNA or nucleic acid-mimicking PNA probes to ribosomes of infectious agents with consecutive analysis by fluorescence microscopy allows identification of bacterial and eukaryotic pathogens at genus or species level...
May 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28124968/-accurate-diagnosis-of-pseudomonas-luteola-in-routine-microbiology-laboratory-on-the-occasion-of-two-isolates
#15
Muharrem Çiçek, Gülşen Hasçelik, H Kaan Müştak, K Serdar Diker, Burçin Şener
Pseudomonas luteola which was previously known as Chryseomonas luteola; is a gram-negative, non-fermentative, aerobic, motile, non-spore-forming bacillus. It is frequently found as a saprophyte in soil, water and other damp environments and is an opportunistic pathogen in patients with underlying medical disorders or with indwelling catheters. It has been reported as an uncommon cause of bacteremia, sepsis, septic arthritis, meningitis, endocarditis, and peritonitis. Thus, early and accurate identification of this rare species is important for the treatment and also to provide information about the epidemiology of P...
October 2016: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28122803/a-decade-of-development-of-chromogenic-culture-media-for-clinical-microbiology-in-an-era-of-molecular-diagnostics
#16
REVIEW
John D Perry
In the last 25 years, chromogenic culture media have found widespread application in diagnostic clinical microbiology. In the last decade, the range of media available to clinical laboratories has expanded greatly, allowing specific detection of additional pathogens, including Pseudomonas aeruginosa, group B streptococci, Clostridium difficile, Campylobacter spp., and Yersinia enterocolitica. New media have also been developed to screen for pathogens with acquired antimicrobial resistance, including vancomycin-resistant enterococci, carbapenem-resistant Acinetobacter spp...
April 2017: Clinical Microbiology Reviews
https://www.readbyqxmd.com/read/28087144/-contribution-of-microbiology-in-the-diagnosis-of-tuberculosis-in-castile-and-le%C3%A3-n-spain-findings-of-the-grumicale-2013-study
#17
Ramiro López-Medrano, Teresa Nebreda-Mayoral, M Fé Brezmes-Valdivieso, Susana García-de Cruz, Begoña Nogueira-González, Rafael Sánchez-Arroyo, Almudena Tinajas-Puertas, Nieves Gutiérrez-Zufiaurre, Cristina Labayru-Echeverría, Susana Hernando-Real, Luis López-Urrutia, Octavio Rivero-Lezcano, Belén Ullivarri-Francia, Raquel Rodríguez-Tarazona, Isabel Antolín-Ayala
INTRODUCTION AND OBJECTIVES: A retrospective study was conducted by collecting microbiological tuberculosis (TB) data in Castile and León during the year 2013 in order to determine the incidence and distribution of TB, and resistance to the tuberculostatic drug, and compare them with the epidemiological data provided by the Department of Epidemiological Surveillance (SIVE). MATERIAL AND METHODS: Microbiologists of the 14 hospitals of the Castile and León public health network (GRUMICALE) collected epidemiological, microbiological, and management data from the Microbiology laboratories in the community during the year 2013...
January 10, 2017: Enfermedades Infecciosas y Microbiología Clínica
https://www.readbyqxmd.com/read/28053214/the-bactec-fx-blood-culture-system-detects-brucella-melitensis-bacteremia-in-adult-patients-within-the-routine-1-week-incubation-period
#18
Moshe Sagi, Lior Nesher, Pablo Yagupsky
The performance of the Bactec FX blood culture system for detecting Brucella bacteremia within the routine 1-week incubation period was assessed in a prospective study conducted in an area in southern Israel in which Brucella melitensis is endemic. Aerobic vials (BD Bactec Plus Aerobic/F medium) inoculated with blood specimens obtained from adult patients with positive Rose-Bengal screening test results were monitored for 4 consecutive weeks, and blind subcultures of negative vials were performed on solid media on days 7 and 28...
March 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28043600/benefits-and-challenges-of-molecular-diagnostics-for-childhood-tuberculosis
#19
Cristina Gutierrez
Expanding tuberculosis (TB)-diagnostic services, including access to rapid tests, is a World Health Organization (WHO) strategy to accelerate progress toward ending TB. Faster and more sensitive molecular tests capable of diagnosing TB and drug-resistant TB have the technical capacity to address limitations associated with smears and cultures by increasing accuracy and shortening turnaround times as compared with those of these conventional laboratory methods. Nucleic acid amplification assays used to detect and analyze Mycobacterium tuberculosis (MTB)-complex nucleic acids can be used directly on specimens from patients suspected of having TB...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/27723450/fully-automated-clinical-grade-bone-marrow-processing-a-single-centre-experience
#20
Benedetta Mazzanti, Serena Urbani, Simone Dal Pozzo, Paola Bufano, Lara Ballerini, Alessia Gelli, Irene Sodi, Irene Donnini, Massimo Di Gioia, Stefano Guidi, Julien Camisani, Riccardo Saccardi
BACKGROUND: Clinical grade processing of harvested bone marrow is required in various clinical situations, particularly in the management of ABO mismatching in allogeneic haematopoietic stem cell transplantation (HSCT) and in regenerative medicine. MATERIAL AND METHODS: We report a single-centre experience using a fully automated, clinical grade, closed system (Sepax, Biosafe, Switzerland). From 2003 to 2015, 125 procedures were performed in our laboratory, including buffy-coat production for HSCT (n=58), regenerative medicine in an orthopaedic setting (n=54) and density-gradient separation in a trial for treatment of critical limb ischaemia (n=13)...
September 27, 2016: Blood Transfusion, Trasfusione del Sangue
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