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Laboratory quality

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https://www.readbyqxmd.com/read/28538790/challenges-for-conducting-blood-collection-and-biochemical-analysis-in-a-large-multicenter-school-based-study-with-adolescents-lessons-from-erica-in-brazil
#1
Felipe Vogt Cureau, Katia Vergetti Bloch, Aline Henz, Camila W Schaan, Carlos Henrique Klein, Cecília Lacroix de Oliveira, Denise Tavares Giannini, Elisa Brosina de Leon, Gabriela de Azevedo Abreu, Gabriela Heiden Telo, Glauber Monteiro Dias, Kênia Mara Baiocchi de Carvalho, Laura Augusta Barufaldi, Maria Cristina Caetano Kuschnir, Moyses Szklo, Renan Montenegro, Thiago Luiz Nogueira da Silva, Ulf Ekelund, Beatriz D Schaan
The Study of Cardiovascular Risk in Adolescents (ERICA) is a pioneering study that aimed to assess the prevalence of cardiovascular risk factors, including metabolic syndrome components in Brazilian adolescents. This study aims to describe the methodological aspects related to blood collection as well as to report pertaining results of the preparation, transport, storage, and exams in ERICA. Exams in ERICA were performed in a single laboratory and blood samples were collected in schools in a standardized manner...
May 18, 2017: Cadernos de Saúde Pública
https://www.readbyqxmd.com/read/28535595/enhancement-of-carbon-and-nitrogen-removal-by-helophytes-along-subsurface-water-flowpaths-receiving-treated-wastewater
#2
Miquel Ribot, Susana Bernal, Myrto Nikolakopoulou, Timothy N Vaessen, Joaquín Cochero, Esperança Gacia, Albert Sorolla, Alba Argerich, Francesc Sabater, Manel Isnard, Eugènia Martí
Wastewater treatment plant (WWTP) effluents are sources of dissolved organic carbon (DOC) and inorganic nitrogen (DIN) to receiving streams, which can eventually become saturated by excess of DIN. Aquatic plants (i.e., helophytes) can modify subsurface water flowpaths as well as assimilate nutrients and enhance microbial activity in the rhizosphere, yet their ability to increase DIN transformation and removal in WWTP-influenced streams is poorly understood. We examined the influence of helophytes on DIN removal along subsurface water flowpaths and how this was associated with DOC removal and labile C availability...
May 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28535585/good-laboratory-standards-for-clinical-next-generation-sequencing-cancer-panel-tests
#3
REVIEW
Jihun Kim, Woong-Yang Park, Nayoung K D Kim, Se Jin Jang, Sung-Min Chun, Chang-Ohk Sung, Jene Choi, Young-Hyeh Ko, Yoon-La Choi, Hyo Sup Shim, Jae-Kyung Won
Next-generation sequencing (NGS) has recently emerged as an essential component of personalized cancer medicine due to its high throughput and low per-base cost. However, no sufficient guidelines for implementing NGS as a clinical molecular pathology test are established in Korea. To ensure clinical grade quality without inhibiting adoption of NGS, a taskforce team assembled by the Korean Society of Pathologists developed laboratory guidelines for NGS cancer panel testing procedures and requirements for clinical implementation of NGS...
May 2017: Journal of Pathology and Translational Medicine
https://www.readbyqxmd.com/read/28535535/inflammation-is-an-important-covariate-for-the-crosstalk-of-sleep-and-the-hpa-axis-in-rheumatoid-arthritis
#4
Rainer H Straub, Jaqueline Detert, René Dziurla, Ingo Fietze, Peter-Andreas Loeschmann, Gerd R Burmester, Frank Buttgereit
Rheumatoid arthritis (RA) patients have sleep problems, and inflammation influences sleep. We demonstrated that sleep quality improves during intensified treatment with methotrexate (MTX) or etanercept (ETA). Since the hypothalamic-pituitary-adrenal (HPA) axis is involved in sleep regulation, this study investigated the interrelation between sleep parameters, inflammation as objectified by C-reactive protein (CRP), and serum cortisol and adrenocorticotropic hormone (ACTH) levels. Thirty-one eligible patients (disease activity score, DAS28CRP ≥3...
May 24, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/28533770/from-vineyard-soil-to-wine-fermentation-microbiome-approximations-to-explain-the-terroir-concept
#5
REVIEW
Ignacio Belda, Iratxe Zarraonaindia, Matthew Perisin, Antonio Palacios, Alberto Acedo
Wine originally emerged as a serendipitous mix of chemistry and biology, where microorganisms played a decisive role. From these ancient fermentations to the current monitored industrial processes, winegrowers and winemakers have been continuously changing their practices according to scientific knowledge and advances. A new enology direction is emerging and aiming to blend the complexity of spontaneous fermentations with industrial safety of monitored fermentations. In this context, wines with distinctive autochthonous peculiarities have a great acceptance among consumers, causing important economic returns...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28533360/female-peer-mentors-early-in-college-increase-women-s-positive-academic-experiences-and-retention-in-engineering
#6
Tara C Dennehy, Nilanjana Dasgupta
Scientific and engineering innovation is vital for American competitiveness, quality of life, and national security. However, too few American students, especially women, pursue these fields. Although this problem has attracted enormous attention, rigorously tested interventions outside artificial laboratory settings are quite rare. To address this gap, we conducted a longitudinal field experiment investigating the effect of peer mentoring on women's experiences and retention in engineering during college transition, assessing its impact for 1 y while mentoring was active, and an additional 1 y after mentoring had ended...
May 22, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28532981/comparing-laboratory-surveillance-with-the-notifiable-diseases-surveillance-system-in-south-africa
#7
F G Benson, A Musekiwa, L Blumberg, L C Rispel
OBJECTIVE: The aim of this study was to compare laboratory surveillance with the notifiable diseases surveillance system (NDSS) in South Africa. METHODS: Data on three tracer notifiable diseases - measles, meningococcal meningitis, and typhoid - were compared to assess data quality, stability, representativeness, sensitivity and positive predictive value (PPV), using the Wilcoxon and Chi-square tests, at the 5% significance level. RESULTS: For all three diseases, fewer cases were notified than confirmed in the laboratory...
May 19, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28532395/factors-associated-with-hand-joint-destruction-in-chinese-patients-with-rheumatoid-arthritis
#8
Lijuan Zhang, Jing Wang, Qiuxiang Zhang, Ting Fu, Rulan Yin, Ze Wang, Liren Li, Xianhua Wu, Zhifeng Gu
BACKGROUND: There have been no previous report of hand joint destruction prevalence in Chinese rheumatoid arthritis (RA) patients. Therefore, the aim of this study was to investigate the prevalence and potential factors of hand joint destruction among RA patients from Nantong China. In addition, we wanted to examine the differences between functional capacity, psychological status, and quality of life in patients with hand joint destruction compared to those without hand joint destruction...
May 22, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28531832/fighting-falsified-medicines-the-analytical-approach
#9
REVIEW
Hervé Rebiere, Pauline Guinot, Denis Chauvey, Charlotte Brenier
Given the harm to human health, the fight against falsified medicines has become a priority issue that involves numerous actors. Analytical laboratories contribute by performing analyses to chemically characterise falsified samples and assess their hazards for patients. A wide range of techniques can be used to obtain individual information on the organic and inorganic composition, the presence of an active substance or impurities, or the crystalline arrangement of the formulation's compound. After a presentation of these individual techniques, this review puts forward a methodology to combine them...
May 13, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28531319/improved-sperm-kinematics-in-semen-samples-collected-after-2-h-versus-4-7-days-of-ejaculation-abstinence
#10
H Alipour, G Van Der Horst, O B Christiansen, F Dardmeh, N Jørgensen, H I Nielsen, C Hnida
STUDY QUESTION: Does a short abstinence period of only 2 h yield spermatozoa with better motility characteristics than samples collected after 4-7 days? SUMMARY ANSWER: Despite lower semen volume, sperm concentration, total sperm counts and total motile counts, higher percentages of motile spermatozoa with higher velocity and progressiveness were detected in samples obtained after 2 h. WHAT IS KNOWN ALREADY: Most studies that have assessed the effect of abstinence periods on sperm motility parameters in men with a sperm concentration below 15 million/ml have detected a higher percentage of motile spermatozoa in samples obtained after short abstinence periods...
May 22, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28531121/a-qpcr-based-tool-to-diagnose-the-presence-of-harmful-cyanobacteria-and-cyanotoxins-in-drinking-water-sources
#11
Yi-Ting Chiu, Yi-Hsuan Chen, Ting-Shaun Wang, Hung-Kai Yen, Tsair-Fuh Lin
Harmful cyanobacteria have been an important concern for drinking water quality for quite some time, as they may produce cyanotoxins and odorants. Microcystis and Cylindrospermopsis are two common harmful cyanobacterial genera detected in freshwater lakes and reservoirs, with microcystins (MCs) and cylindrospermopsin (CYN) as their important metabolites, respectively. In this study, two sets of duplex qPCR systems were developed, one for quantifying potentially-toxigenic Microcystis and Microcystis, and the other one for cylindrospermopsin-producing cyanobacteria and Cylindrospermopsis...
May 20, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28529095/understanding-operator-stent-choice-in-the-catheterization-laboratory-using-a-pre-procedure-survey-opportunities-for-quality-improvement
#12
Matthew J Chung, Jonathan D Hansen, Ryan D Schulteis, Joel C Boggan, W Schuyler Jones, Thomas J Povsic, Susan Roberts, Mitchell W Krucoff, Sunil V Rao
OBJECTIVES: We sought to characterize how the perceived risk of early dual antiplatelet therapy (DAPT) discontinuation is incorporated into operator decision-making regarding stent choice, using a simple pre-procedure survey screening for clinical variables that may lead to early DAPT discontinuation. BACKGROUND: Understanding which factors influence operator decision-making regarding stent choice during percutaneous coronary intervention (PCI) could help identify areas for quality improvement...
May 8, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28528368/preparation-of-allogeneic-bone-for-alveolar-ridge-augmentation
#13
Kornel Krasny, Artur Kamiński, Marta Krasny, Tomasz Czech, Andrzej Wojtowicz
Implant treatment is safe and predictable with sufficient amount and quality of bone tissue. In case of severely reduced bone tissue after a tooth was lost, augmentation of such tissue is necessary before implant embedment. Retrospective evaluation covered 380 alveolar ridge reconstructions. The study material consisted of human grafts prepared by the Department of Transplantology and Central Tissue Bank, Medical University of Warsaw. Presentation of laboratory procedures in the context of physical parameters of frozen, radiation sterilised, allogeneic corticocancellous material was presented...
May 20, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/28527690/testing-cognitive-functions-in-rodent-disease-models-present-pitfalls-and-future-perspectives
#14
REVIEW
Heikki Tanila
Testing of cognitive functions in rodent disease models constitutes a substantial sector of behavioral neuroscience. It is most often needed in phenotyping genetically modified new rodent (usually mouse) lines or in preclinical testing of cognitive effects of new CNS drugs. This review concerns present pitfalls and future perspectives in this large field, with an emphasis on memory testing in CNS disease models and their preclinical drug testing. It is important to realize that no behavioral test is specific for a single cognitive domain...
May 17, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28526524/visual-snow-in-a-paediatric-patient
#15
E Santos-Bueso, A M Muñoz-Hernández, N Avalos-Franco, S García-Sáenz, F Sáenz-Francés, J Porta-Etessam
CASE REPORT: The case is presented of an 11 year-old girl referring to a one year history of photophobia and continuously seeing white spots in both eyes. The patient had a visual acuity of unity in both eyes, and a normal eye examination, and was referred to the Neuro-ophthalmology Unit. Once complete laboratory and imaging tests ruled out the possibility of any neurological pathology, she was diagnosed with visual snow (VS). DISCUSSION: VS is an isolated symptom, possibly part of the migraine aura, that is referred by patients reporting numerous and constant white dots moving in the visual field of BE...
May 16, 2017: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/28525291/the-state-of-opioid-agonist-therapy-in-canada-20-years-after-federal-oversight
#16
Joseph K Eibl, Kristen Morin, Esa Leinonen, David C Marsh
Opioid agonist therapy was introduced in Canada in 1959 with the use of methadone for the treatment of opioid dependence. The regulation of methadone was the responsibility of Health Canada until 1995, when oversight was transferred to the provincial health systems. During the more than 20 years since the federal health authority transferred oversight of methadone to the provincial level, methadone programming has evolved differently in every province. The landscape of opioid dependence treatment is varied across the country, with generally increasing treatment capacity in all provinces and dramatic increases in some...
January 1, 2017: Canadian Journal of Psychiatry. Revue Canadienne de Psychiatrie
https://www.readbyqxmd.com/read/28523520/hepatitis-e-virus-serology-and-pcr-does-the-methodology-matter
#17
Lien Cattoir, Frederik Van Hoecke, Tom Van Maerken, Eveline Nys, Inge Ryckaert, Matthias De Boulle, Anja Geerts, Xavier Verhelst, Isabelle Colle, Veronik Hutse, Vanessa Suin, Magali Wautier, Steven Van Gucht, Hans Van Vlierberghe, Elizaveta Padalko
Hepatitis E virus (HEV) genotype 3 is an emerging pathogen in the developed world. As the clinical manifestations and routine laboratory parameters are often nonspecific, accurate diagnostic tests are crucial. In the current study, the performance of six serological assays and three PCR assays for the detection of HEV was evaluated. In the setting of the Ghent University Hospital, patients with clinically suspected HEV infection were tested for the presence of HEV IgM and IgG as well as HEV RNA. Serology was performed using six commercial HEV ELISA assays: Biorex, Wantai and Mikrogen IgM and IgG...
May 18, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28522924/use-of-the-4kscore-test-to-predict-the-risk-of-aggressive-prostate-cancer-prior-to-prostate-biopsy-overall-cost-savings-and-improved-quality-of-care-to-the-us-healthcare-system
#18
Jeffrey D Voigt, Yan Dong, Vincent Linder, Stephen Zappala
The 4Kscore® Test (BioReference Laboratories, Elmwood Park, NJ) is a blood test that accurately determines the risk of aggressive prostate cancer and significantly reduces prostate biopsies and associated overdiagnosis and overtreatment of indolent cancer. A budget impact model was developed to test the hypothesis that the 4Kscore Test can improve quality of care and deliver cost savings for patients who are suspected of having prostate cancer and would otherwise undergo prostate biopsy under the current standard of care (SOC) in the United States...
2017: Reviews in Urology
https://www.readbyqxmd.com/read/28522142/integration-and-validation-of-the-ex-vivo-human-placenta-perfusion-model
#19
Sigrid Conings, Frédéric Amant, Pieter Annaert, Kristel Van Calsteren
INTRODUCTION: The ex vivo human placenta perfusion model is an effective and non-invasive method to study transplacental passage of drugs and environmental compounds in humans. Due to many challenges and its high complexity it remains difficult to incorporate it routinely into laboratories. METHODS: This article describes a step-by-step protocol for the implementation and validation of a closed-closed ex vivo perfusion model. Antipyrine, a small molecule that passes the placental barrier by passive diffusion, was used as a measurement of overlap between foetal and maternal circulation...
May 15, 2017: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/28521921/1-year-results-in-patients-undergoing-transcatheter-aortic-valve-replacement-with-failed-surgical-bioprostheses
#20
G Michael Deeb, Stanley J Chetcuti, Michael J Reardon, Himanshu J Patel, P Michael Grossman, Theodore Schreiber, John K Forrest, Tanvir K Bajwa, Daniel P O'Hair, George Petrossian, Newell Robinson, Stanley Katz, Alan Hartman, Harold L Dauerman, Joseph Schmoker, Kamal Khabbaz, Daniel R Watson, Steven J Yakubov, Jae K Oh, Shuzhen Li, Neal S Kleiman, David H Adams, Jeffrey J Popma
OBJECTIVES: This study evaluated the safety and effectiveness of self-expanding transcatheter aortic valve replacement (TAVR) in patients with surgical valve failure (SVF). BACKGROUND: Self-expanding TAVR is superior to medical therapy for patients with severe native aortic valve stenosis at increased surgical risk. METHODS: The CoreValve U.S. Expanded Use Study was a prospective, nonrandomized study that enrolled 233 patients with symptomatic SVF who were deemed unsuitable for reoperation...
May 22, 2017: JACC. Cardiovascular Interventions
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