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Lab quality

Eleni C Pappa, Thomas G Bontinis, Maria Tasioula-Margari, John Samelis
The microbiological quality of and changes in the main physicochemical parameters, together with the evolution of proteolysis, lipolysis and volatile profiles of soft Xinotyri, a traditional Greek acid-curd cheese (pH≈4.4, moisture 65%, salt 1%) made from raw (RMC) or pasteurized (PMC) goat's milk without starters, were evaluated during aerobic storage at 4o C for 60 days. No statistically significant differences between the total nitrogen (TN) and nitrogen fraction (% of TN) contents, the degradation of intact αs - or β-caseins, total free amino acid (FAA) contents, and the ratio of hydrophilic and hydrophobic peptides in the water-soluble fraction of RMC and PMC were found...
December 2017: Food Technology and Biotechnology
Charles E Chambers, Hemantha K Koduri
Real time radiation dose monitoring in the cath lab may provide immediate feedback for potential dose reduction during PCI. Radiation dose monitoring to predict potential tissue injury utilizes equipment measured air Kerma at the interventional reference point (IRP) with then calculated specific tissue peak skin dose. The role of the cath lab Quality Committee is not only to assess individual high dose radiation cases but also to create processes and assess new technologies to assure radiation dose is best utilized in all cases...
March 1, 2018: Catheterization and Cardiovascular Interventions
Alex J Sposito, Aditya Kurdekar, Jiangqin Zhao, Indira Hewlett
Rapid detection and identification of pathogenic microorganisms is fundamental to minimizing the spread of infectious disease, and informing clinicians on patient treatment strategies. This need has led to the development of enhanced biosensors that utilize state of the art nanomaterials and nanotechnology, and represent the next generation of diagnostics. A primer on nanoscale biorecognition elements such as, nucleic acids, antibodies, and their synthetic analogs (molecular imprinted polymers), will be presented first...
March 12, 2018: Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology
Karen Wain
The genetic counseling profession continues to expand and respond to the changing landscape of genomic medicine. "Non-traditional" genetic counseling roles have become more commonplace and the transferability of the genetic counselor skill set has been widely acknowledged, particularly in genetic laboratory settings. As these expanding roles continue to mature, all genetic counselors can benefit by learning and adopting clinically relevant skills, such as genomic variant interpretation, which can be applied to direct patient care...
March 10, 2018: Journal of Genetic Counseling
Jung In Park, Donna Z Bliss, Chih-Lin Chi, Connie W Delaney, Bonnie L Westra
PURPOSE: The purpose of this study was to identify factors associated with healthcare-acquired catheter-associated urinary tract infections (HA-CAUTIs) using multiple data sources and data mining techniques. SUBJECTS AND SETTING: Three data sets were integrated for analysis: electronic health record data from a university hospital in the Midwestern United States was combined with staffing and environmental data from the hospital's National Database of Nursing Quality Indicators and a list of patients with HA-CAUTIs...
March 2018: Journal of Wound, Ostomy, and Continence Nursing
Matthew C Bunte, David J Cohen, Michael R Jaff, William A Gray, Elizabeth A Magnuson, Haiyan Li, Andrew Feiring, Marco Cioppi, Robert Hibbard, Bruce Gray, Yazan Khatib, David Jessup, Roberto Patarca, Jing Du, Hans-Peter Stoll, Joe Massaro, David M Safley
OBJECTIVES: To evaluate the clinical and health status outcomes of patients undergoing superficial femoral artery (SFA) revascularization using the Shape Memory Alloy Recoverable Technology (S.M.A.R.T.®) nitinol self-expanding stent through 3 years of follow-up. BACKGROUND: Limited long-term data are available describing the durability of benefits after femoropopliteal revascularization. METHODS: In a multicenter, prospective, core-lab adjudicated study, 250 subjects with de novo or restenotic femoropopliteal arterial lesions were treated with the S...
March 9, 2018: Catheterization and Cardiovascular Interventions
Michail Sideris, John Hanrahan, Georgios Tsoulfas, Iakovos Theodoulou, Fatema Dhaif, Vassilios Papalois, Savvas Papagrigoriadis, George Velmahos, Patricia Turner, Apostolos Papalois
BACKGROUND: Essential Skills in the Management of Surgical Cases (ESMSC) is a novel 3-day international undergraduate surgical masterclass. Its current curriculum (Cores integrated for Research-Ci4R) is built on a tetracore, multiclustered architecture combining high-fidelity and low-fidelity simulation-based learning (SBL), with applied and basic science case-based workshops, and non-technical skills modules. We aimed to report our experience in setting up ESMSC during the global financial crisis...
March 8, 2018: Postgraduate Medical Journal
Gabrielle Wong-Parodi, M Beatrice Dias, Michael Taylor
BACKGROUND: Air quality affects us all and is a rapidly growing concern in the 21st century. We spend the majority of our lives indoors and can be exposed to a number of pollutants smaller than 2.5 microns (particulate matter, PM2.5 ) resulting in detrimental health effects. Indoor air quality sensors have the potential to provide people with the information they need to understand their risk and take steps to reduce their exposure. One such sensor is the Speck sensor developed at the Community Robotics, Education and Technology Empowerment Lab at Carnegie Mellon University...
March 8, 2018: JMIR MHealth and UHealth
Johan Newell, Olivier Mairesse, Daniel Neu
PURPOSE: Until now, there is no clear consensus on optimal care for mild sleep-related breathing disorders (SRBD) in general or for positional obstructive sleep apnea (POSA) in particular. Most proposed treatment options are either invasive and/or expensive. Positional therapy (PT) may therefore present as a valuable first-line intervention in POSA. METHODS: Twenty-eight patients presenting with POSA were enrolled in a prospective cohort study. The protocol consisted of three nights of polysomnography (PSG) in an academic sleep lab...
March 7, 2018: Sleep & Breathing, Schlaf & Atmung
Aslı Turan, Sibel Soycan Önenç
Objective: This study was carried out to determine the effects of cumin essential oil on the silage fermentation, aerobic stability and in vitro digestibility of alfalfa silages. Methods: Alfalfa was harvested at early bloom (5 th cutting) stage in October and wilted for about 3 hours. The research was carried out at three groups which were the control group where no additive control was done (CON), cumin essential oil (CMN3) with 300 mg/kg and CMN5 with 500 mg/kg cumin essential oil addition...
March 2, 2018: Asian-Australasian Journal of Animal Sciences
Kumar Raja Puppala, V Ravi Kumar, Jayant Khire, Mahesh Dharne
Increase of undigested complexes of phytic acid in food is gaining serious attention to overcome nutritional challenges due to chelation effects. We investigated soil-borne yeast phytase from Saccharomyces cerevisiae (NCIM 3662) for dephytinization of foods, probiotic properties, and process development. The strain produced 45 IU/DCG by cell-bound phytase in an unoptimized medium was increased fourfold (164 IU/DCG) in 12 h using statistical media optimization. The process was scaled-up up to 10-L fermenter scale with increased phytase productivity of 6...
March 5, 2018: Probiotics and Antimicrobial Proteins
Matthew Clark, Asim Shuja, Ashley Thomas, Scott Steinberg, Joseph Geffen, Miguel Malespin, Silvio W de Melo Jr
Background: Studying the role of gastroenterologists' attire can provide insight into patients' perceptions and help us optimize the physician-patient relationship. In this study we assessed patients' preference concerning gastroenterologists' attire, and its influence on patients' trust, empathy and perceptions of the quality of care in the clinic and endoscopic suite. Methods: A cross-sectional survey was conducted from August 2016 to February 2017. A total of 240 consecutive patients who presented to the Gastroenterology Department at the University of Florida in Jacksonville both in the clinic and endoscopic suite were included in this study...
March 2018: Annals of Gastroenterology: Quarterly Publication of the Hellenic Society of Gastroenterology
David B Miklos, Rebecca Hartl, Philipp Michel, Karl G Linden, Jörg E Drewes, Uwe Hübner
This study investigated the removal of 15 trace organic chemicals (TOrCs) occurring at ambient concentrations from municipal wastewater treatment plant effluent by advanced oxidation using UV/H2 O2 at pilot-scale. Pseudo first-order rate constants (kobs ) for photolytic as well as combined oxidative and photolytic degradation observed at pilot-scale were validated with results from a bench-scale collimated beam device. No significant difference was determined between pilot- and lab-scale performance. During continuous pilot-scale operation at constant UV fluence of 800 mJ/cm2 and H2 O2 dosage of 10 mg/L, the removal of various TOrCs was investigated...
February 21, 2018: Water Research
Edwina Romanens, Rebecca Näf, Tobias Lobmaier, Vasilisa Pedan, Susette Freimüller Leischtfeld, Leo Meile, Susanne Miescher Schwenninger
Lab-scale systems modelling the spontaneous cocoa bean fermentation process are useful tools to research the influence of process parameters on the fermentation and the final bean quality. In this study in Honduras, a 1-kg lab-scale fermentation (LS-F) was compared to a 300-kg on-farm fermentation (OF-F) in a multiphasic approach, analysing microbial counts, microbial species diversity, physico-chemical parameters, and final dried bean quality. Yeast and total aerobic counts of up to 8 log CFU/g during the LS-F were comparable to the OF-F, while counts for lactic acid bacteria and acetic acid bacteria were up to 3 log CFU/g lower during the LS-F than during the OF-F...
February 28, 2018: Applied Microbiology and Biotechnology
Afaque H Khan, Samina Zaidi
We report five cases of treatment-resistant schizophrenia that presented with prominent negative and positive symptoms. They fulfill the criteria of diagnosis of schizophrenia according to the Diagnostic and Statistical Manual of Mental Disorders, fifth edition (DSM-5). They showed lack of response despite receiving multiple trials of first and second generation psychotropic agents. We decided to give these patients a trial of clozapine to improve their negative and positive symptoms as well as their quality of life...
December 20, 2017: Curēus
Thea Radüntz
Electroencephalogram (EEG) registration as a direct measure of brain activity has unique potentials. It is one of the most reliable and predicative indicators when studying human cognition, evaluating a subject's health condition, or monitoring their mental state. Unfortunately, standard signal acquisition procedures limit the usability of EEG devices and narrow their application outside the lab. Emerging sensor technology allows gel-free EEG registration and wireless signal transmission. Thus, it enables quick and easy application of EEG devices by users themselves...
2018: Frontiers in Physiology
Patricia Arranz, Kelly J Benoit-Bird, Brandon L Southall, John Calambokidis, Ari S Friedlaender, Peter L Tyack
Humans remember the past and use that information to plan future actions. Lab experiments that test memory for the location of food show that animals have a similar capability to act in anticipation of future needs, but less work has been done on animals foraging in the wild. We hypothesized that planning abilities are critical and common in breath-hold divers who adjust each dive to forage on prey varying in quality, location and predictability within constraints of limited oxygen availability. We equipped Risso's dolphins with sound-and-motion recording tags to reveal where they focus their attention through their externally observable echolocation and how they fine tune search strategies in response to expected and observed prey distribution...
February 28, 2018: Journal of Experimental Biology
Jianhong Ou, Haibo Liu, Jun Yu, Michelle A Kelliher, Lucio H Castilla, Nathan D Lawson, Lihua Julie Zhu
BACKGROUND: ATAC-seq (Assays for Transposase-Accessible Chromatin using sequencing) is a recently developed technique for genome-wide analysis of chromatin accessibility. Compared to earlier methods for assaying chromatin accessibility, ATAC-seq is faster and easier to perform, does not require cross-linking, has higher signal to noise ratio, and can be performed on small cell numbers. However, to ensure a successful ATAC-seq experiment, step-by-step quality assurance processes, including both wet lab quality control and in silico quality assessment, are essential...
March 1, 2018: BMC Genomics
Neeraj Raizada, Sunil D Khaparde, Virender Singh Salhotra, Raghuram Rao, Aakshi Kalra, Soumya Swaminathan, Ashwani Khanna, Kamal Kishore Chopra, M Hanif, Varinder Singh, K R Umadevi, Sreenivas Achuthan Nair, Sophie Huddart, C H Surya Prakash, Shalini Mall, Pooja Singh, B K Saha, Claudia M Denkinger, Catharina Boehme, Sanjay Sarin
BACKGROUND: Diagnosis of TB in children is challenging, and is largely based on positive history of contact with a TB case, clinical and radiological findings, often without microbiological confirmation. Diagnostic efforts are also undermined by challenges in specimen collection and the limited availability of high sensitivity, rapid diagnostic tests that can be applied with a quick turnaround time. The current project was undertaken in four major cities of India to address TB diagnostic challenges in pediatric population, by offering free of cost Xpert testing to pediatric presumptive TB cases, thereby paving the way for better TB care...
2018: PloS One
Rachel C Evans, Samuel O Kyeremateng, Lutz Asmus, Matthias Degenhardt, Joerg Rosenberg, Karl G Wagner
The aim of this work was to investigate the use of torasemide as a highly sensitive indicator substance and to develop a formulation thereof for establishing quantitative relationships between hot-melt extrusion process conditions and critical quality attributes (CQAs). Using solid-state characterization techniques and a 10 mm lab-scale co-rotating twin-screw extruder, we studied torasemide in a Soluplus® (SOL)-polyethylene glycol 1500 (PEG 1500) matrix, and developed and characterized a formulation which was used as a process indicator to study thermal- and hydrolysis-induced degradation, as well as residual crystallinity...
February 27, 2018: AAPS PharmSciTech
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