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https://www.readbyqxmd.com/read/28097784/reliability-of-intraoperative-frozen-section-for-the-diagnosis-of-renal-tumors-suspicious-for-malignancy-in-children-and-adolescents
#1
Alonso Carrasco, Brian T Caldwell, Carrye R Cost, Brian S Greffe, Timothy P Garrington, Jennifer L Bruny, Jennifer O Black, Nicholas G Cost
BACKGROUND: The ability of intraoperative frozen section (IFS) to reliably diagnose renal tumors in children and adolescents is largely unknown. The objective of our study is to evaluate the ability of IFS to establish a histologic diagnosis for renal tumors in this population. METHODS: We reviewed our experience with patients who underwent IFS at the time of surgery for a renal tumor suspicious for malignancy from 2005 to 2015. The IFS was compared to the final pathology (FP)...
January 18, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28094237/a-multiplex-microsphere-immunoassay-for-zika-virus-diagnosis
#2
Susan J Wong, Andrea Furuya, Jing Zou, Xuping Xie, Alan P Dupuis, Laura D Kramer, Pei-Yong Shi
Rapid and accurate diagnosis of infectious agents is essential for patient care, disease control, and countermeasure development. The present serologic diagnosis of Zika virus (ZIKV) infection relies mainly on IgM-capture ELISA which is confounded with the flaw of cross-reactivity among different flaviviruses. In this communication, we report a multiplex microsphere immunoassay (MIA) that captures the diagnostic power of viral envelope protein (that elicits robust, yet cross-reactive antibodies to other flaviviruses) and the differential power of viral nonstructural proteins NS1 and NS5 (that induce more virus-type specific antibodies)...
January 10, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28063462/going-digital-a-narrative-overview-of-the-clinical-and-organisational-impacts-of-ehealth-technologies-in-hospital-practice
#3
Justin Keasberry, Ian A Scott, Clair Sullivan, Andrew Staib, Richard Ashby
Objective The aim of the present study was to determine the effects of hospital-based eHealth technologies on quality, safety and efficiency of care and clinical outcomes.Methods Systematic reviews and reviews of systematic reviews of eHealth technologies published in PubMed/Medline/Cochrane Library between January 2010 and October 2015 were evaluated. Reviews of implementation issues, non-hospital settings or remote care or patient-focused technologies were excluded from analysis. Methodological quality was assessed using a validated appraisal tool...
January 9, 2017: Australian Health Review: a Publication of the Australian Hospital Association
https://www.readbyqxmd.com/read/28046040/impact-of-pre-analytical-time-on-the-recovery-of-pathogens-from-blood-cultures-results-from-a-large-retrospective-survey
#4
Claudia Venturelli, Elena Righi, Lucia Borsari, Gabriella Aggazzotti, Stefano Busani, Cristina Mussini, Fabio Rumpianesi, Gian Maria Rossolini, Massimo Girardis
BACKGROUND: Prompt identification of bloodstream pathogens is essential for optimal management of patients. Significant changes in analytical methods have improved the turnaround time for laboratory diagnosis. Less attention has been paid to the time elapsing from blood collection to incubation and to its potential effect on recovery of pathogens. We evaluated the performance of blood cultures collected under typical hospital conditions in relation to the length of their pre-analytical time...
2017: PloS One
https://www.readbyqxmd.com/read/28043620/implementation-of-new-tools-for-multidrug-resistant-tuberculosis-detection-and-control
#5
Robin M Warren
Contrary to classical dogma, molecular epidemiological studies and mathematical modeling clearly show that the global drug-resistant tuberculosis (TB) epidemic is driven by transmission. Furthermore, there is mounting evidence demonstrating that amplification of resistance occurs during treatment, possibly as a result of insufficient active drugs being administered. To control the drug-resistant TB epidemic, it will be essential to implement new, rapid, and highly sensitive and specific diagnostic methods to decrease the diagnostic delay associated with culture-based testing...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043600/benefits-and-challenges-of-molecular-diagnostics-for-childhood-tuberculosis
#6
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/28043590/use-of-wgs-in-mycobacterium-tuberculosis-routine-diagnosis
#7
Daniela M Cirillo, Andrea M Cabibbe, Maria Rosaria De Filippo, Alberto Trovato, Tullia Simonetti, Gian Maria Rossolini, Enrico Tortoli
OBJECTIVE/BACKGROUND: Whole Genome Sequencing (WGS) is becoming affordable with overall costs comparable to other tests currently in use to perform the diagnosis of drug-resistant tuberculosis (TB) and cluster analysis. The WGS approach allows an "all-in-one" approach providing results on expected sensitivity of the strains, genetic background, epidemiological data, and indication of risk of laboratory cross-contamination. METHODS: Although ideal, WGS from the direct diagnostic specimen is not yet standardized, and to date the two most promising approaches are WGS from early positive liquid culture and targeted sequencing from diagnostic specimens using Next-Generation Technology...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28006981/accurate-detection-of-streptococcus-pyogenes-at-the-point-of-care-using-the-cobas-liat-strep-a-nucleic-acid-test
#8
Fangnian Wang, Yu Tian, Lingjun Chen, Robert Luo, Joanna Sickler, Oliver Liesenfeld, Shuqi Chen
The performance of a polymerase chain reaction-based point-of-care assay, the cobas Strep A Nucleic Acid Test for use on the cobas Liat System (cobas Liat Strep A assay), for the detection of group A Streptococcus bacteria was evaluated in primary care settings. Throat swab specimens from 427 patients were tested with the cobas Liat Strep A assay and a rapid antigen detection test (RADT) by existing medical staff at 5 primary care clinics, and results were compared with bacterial culture. The cobas Liat Strep A assay demonstrated equivalent sensitivity (97...
December 1, 2016: Clinical Pediatrics
https://www.readbyqxmd.com/read/27994689/random-assay-in-radioimmunoassay-feasibility-and-application-compared-with-batch-assay
#9
Jung Min Lee, Hwan Hee Lee, Sohyun Park, Tae Sung Kim, Seok-Ki Kim
PURPOSE: The batch assay has been conventionally used for radioimmunoassay (RIA) because of its technical robustness and practical convenience. However, it has limitations in terms of the relative lag of report time due to the necessity of multiple assays in a small number of samples compared with the random assay technique. In this study, we aimed to verify whether the random assay technique can be applied in RIA and is feasible in daily practice. METHODS: The coefficients of variation (CVs) of eight standard curves within a single kit were calculated in a CA-125 immunoradiometric assay (IRMA) for the reference of the practically ideal CV of the CA-125 kit...
December 2016: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27991657/molecular-typing-for-blood-group-antigens-within-40%C3%A2-min-by-direct-polymerase-chain-reaction-from-plasma-or-serum
#10
Franz F Wagner, Willy A Flegel, Rita Bittner, Andrea Döscher
Determining blood group antigens by serological methods may be unreliable in certain situations, such as in patients after chronic or massive transfusion. Red cell genotyping offers a complementary approach, but current methods may take much longer than conventional serological typing, limiting their utility in urgent situations. To narrow this gap, we devised a rapid method using direct polymerase chain reaction (PCR) amplification while avoiding the DNA extraction step. DNA was amplified by PCR directly from plasma or serum of blood donors followed by a melting curve analysis in a capillary rapid-cycle PCR assay...
December 19, 2016: British Journal of Haematology
https://www.readbyqxmd.com/read/27990512/warfarin-genotyping-with-hybridization-induced-aggregation-on-a-poly-ethylene-terephthalate-microdevice
#11
Hillary S Sloane, Morgan B Carter, Alexa E C Cecil, Delphine Le Roux, Daniel L Mills, James P Landers
Warfarin, a commonly prescribed oral anticoagulant, is burdened by a narrow therapeutic index and high inter-individual variability in response, making it the second leading cause of drug-related emergency room visits. Since genetic factors contribute significantly to warfarin sensitivity, a genotype-guided dosing strategy may reduce the occurrence of adverse events. While numerous methods have been demonstrated for warfarin genotyping, the specifications of most assays with respect to turnaround time and cost are not ideal for routine testing...
December 19, 2016: Analyst
https://www.readbyqxmd.com/read/27987596/the-challenge-of-molecular-testing-for-clinical-trials-in-advanced-non-small-cell-lung-cancer-patients-analysis-of-a-prospective-database
#12
Anniek Vrancken, Stefanie Lepers, Liesbet Peeters, Christel Oyen, Christophe Dooms, Kristiaan Nackaerts, Eric Verbeken, Isabelle Wauters, Birgit Weynand, Johan Vansteenkiste
OBJECTIVES: Molecular testing has become important in the biomarker program of clinical trials for advanced non-small lung cancer (NSCLC). These tissue samples often have to be analyzed in a central laboratory. We evaluated the turnaround time and possible delay in start of therapy in this process and how often testing resulted in inclusion in a clinical trial. METHODS: We reviewed our prospective database on all molecular testing cases for clinical trial suitability in patients with advanced NSCLC between March 1, 2011 and October 31, 2014...
December 2016: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/27977912/characterization-of-tap-ambr-250-disposable-bioreactors-as-a-reliable-scale-down-model-for-biologics-process-development
#13
Ping Xu, Colleen Clark, Todd Ryder, Colleen Sparks, Jiping Zhou, Michelle Wang, Reb Russell, Charo Scott
Demands for development of biological therapies is rapidly increasing, as is the drive to reduce time to patient. In order to speed up development, the disposable Automated Microscale Bioreactor (Ambr 250) system is increasingly gaining interest due to its advantages, including highly automated control, high throughput capacity, and short turnaround time. Traditional early stage upstream process development conducted in 2 - 5 L bench-top bioreactors requires high foot-print, and running cost. The establishment of the Ambr 250 as a scale-down model leads to many benefits in process development...
December 15, 2016: Biotechnology Progress
https://www.readbyqxmd.com/read/27941128/annals-express-development-of-a-liquid-chromatography-tandem-mass-spectrometry-method-for-the-simultaneous-measurement-of-voriconazole-posaconazole-and-itraconazole
#14
John Michael Wadsworth, Anna M Milan, James Anson, Andrew Stuart Davison
BACKGROUND: Azole based antifungals are the first line therapy for some of the most common mycoses and are now also being used prophylactically to protect immunocompromised patients. However due to variability in both their metabolism and bioavailability, therapeutic drug monitoring is essential to avoid toxicity but still gain maximum efficacy. METHODS: Following protein precipitation with acetonitrile, 20 µL of extract was injected onto a 2.1x50mm Waters Atlantis dC18 3 µm column...
December 8, 2016: Annals of Clinical Biochemistry
https://www.readbyqxmd.com/read/27934884/rapid-affordable-and-portable-medium-throughput-molecular-device-for-zika-virus
#15
Kamfai Chan, Scott C Weaver, Pui-Yan Wong, Sherly Lie, Eryu Wang, Mathilde Guerbois, Siva Praneeth Vayugundla, Season Wong
Zika virus (ZIKV) has gained global attention as an etiologic agent of fetal microcephaly and Guillain-Barré syndrome. Existing immuno-based rapid tests often fail to distinguish between Zika and related flaviviruses that are common in affected regions of Central and South Americas and the Caribbean. The US CDC and qualified state health department laboratories can perform the reverse transcription polymerase chain reaction (RT-PCR) ZIKV test using highly sophisticated instruments with long turnaround times...
December 9, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27914768/selective-staining-of-gastric-biopsies-for-h-pylori-does-not-affect-detection-rates-or-turnaround-time-and-improves-cost-compared-to-reflexive-staining
#16
Lauren Decker, Joshua Keith Routh, Jessica Sara Snider, Joshua Anspach Hanson
AIMS: To evaluate how reflexive versus selective H. pylori stains affect detection rates, turnaround time (TAT), and cost savings in a real life practice environment following an institutional policy change. METHODS: The aforementioned parameters were evaluated in all cases in the year preceding and the year following an institutional policy change from reflexive to selective staining. RESULTS: 1497 patients comprised the reflexive stain (RS) group of which 228 (15...
January 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/27913483/atypical-hemolytic-uremic-syndrome
#17
Vahid Afshar-Kharghan
Atypical hemolytic uremic syndrome (aHUS) is a thrombotic microangiopathy (TMA) that affects multiple organs and the kidneys in particular. aHUS can be sporadic or familial and is most commonly caused by dysregulation of the alternative complement pathway. The initial attack of aHUS can occur at any age, and is associated with a high rate of progression to end stage renal disease. Many aHUS patients relapse in the native or transplanted kidneys, and require close monitoring and long-term management. Availability of anticomplement therapy has revolutionized the management of aHUS, and can change the natural course of aHUS by inducing hematologic remission, improving or stabilizing kidney functions, and preventing graft failure...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27895341/bringing-efficiency-into-practice-a-quality-improvement-initiative-to-reduce-operating-room-turnaround-time
#18
Hasanat Sharif, Noman Shehzad, Joveria Farooqi, Sana Karim, Sana Akbar
Operating room (OR) turnaround time (TAT) is the minimal essential time required for cleaning of OR and preparation for the next case. The TAT inversely affects OR efficiency. Several factors related to personnel, equipment and scheduling have been identified as causes of increased TAT. We conducted the study to identify factors that affect OR TAT and to propose recommendations for its reduction. The retrospective study, conducted at Aga Khan University Hospital, Karachi, comprised TAT records related to March 2014...
October 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/27879409/new-technologies-for-rapid-bacterial-identification-and-antibiotic-resistance-profiling
#19
Shana O Kelley
Conventional approaches to bacterial identification and drug susceptibility testing typically rely on culture-based approaches that take 2 to 7 days to return results. The long turnaround times contribute to the spread of infectious disease, negative patient outcomes, and the misuse of antibiotics that can contribute to antibiotic resistance. To provide new solutions enabling faster bacterial analysis, a variety of approaches are under development that leverage single-cell analysis, microfluidic concentration and detection strategies, and ultrasensitive readout mechanisms...
November 1, 2016: Journal of Laboratory Automation
https://www.readbyqxmd.com/read/27875685/progressive-disseminated-histoplasmosis-a-systematic-review-on-the-performance-of-non-culture-based-diagnostic-tests
#20
Diego R Falci, Elias R Hoffmann, Diego D Paskulin, Alessandro C Pasqualotto
The diagnosis of progressive disseminated histoplasmosis is often a challenge to clinicians, especially due to the low sensitivity and long turnaround time of the classic diagnostic methods. In recent years, studies involving a variety of non-culture-based diagnostic tests have been published in the literature. We performed a systematic review by selecting studies evaluating non-culture-based diagnostic methods for progressive disseminated histoplasmosis. We searched for articles evaluating detection of antibody, antigens, as well as DNA-based diagnostic methods...
November 19, 2016: Brazilian Journal of Infectious Diseases
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