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https://www.readbyqxmd.com/read/28922649/determination-of-74-new-psychoactive-substances-in-serum-using-automated-in-line-solid-phase-extraction-liquid-chromatography-tandem-mass-spectrometry
#1
Sabrina Lehmann, Tobias Kieliba, Justus Beike, Mario Thevis, Katja Mercer-Chalmers-Bender
A detailed description is given of the development and validation of a fully automated in-line solid-phase extraction-liquid chromatography-tandem mass spectrometry (SPE-LC-MS/MS) method capable of detecting 90 central-stimulating new psychoactive substances (NPS) and 5 conventional amphetamine-type stimulants (amphetamine, 3,4-methylenedioxy-methamphetamine (MDMA), 3,4-methylenedioxy-amphetamine (MDA), 3,4-methylenedioxy-N-ethyl-amphetamine (MDEA), methamphetamine) in serum. The aim was to apply the validated method to forensic samples...
September 7, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28916956/transitioning-to-minimal-footwear-a-systematic-review-of-methods-and-future-clinical-recommendations
#2
REVIEW
Joe P Warne, Allison H Gruber
BACKGROUND: Recent interest in barefoot running has led to the development of minimalist running shoes that are popular in distance runners. A careful transition to these shoes has been suggested and examined in the literature. However, no guidelines based on systematic evidence have been presented. The purpose of this review is to systematically examine the methods employed in the literature to transition to minimal footwear (MFW), as well as the outcomes to these studies in distance runners...
September 15, 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/28915419/sensitivity-improvement-of-the-lc-ms-ms-quantification-of-carbidopa-in-human-plasma-and-urine-by-derivatization-with-2-4-pentanedione
#3
Nico C van de Merbel, Kees J Bronsema, Steven H Gorman, Ray Bakhtiar
The reliable quantification of carbidopa in biological samples at low concentrations is challenging because of the polar and highly unstable nature of the compound. In this paper, LC-MS/MS methods are described for the determination of carbidopa in 50μL of human plasma and 25μL of human urine in the concentration ranges 1-1,000ng/mL and 100-50,000ng/mL, respectively. After a simple protein precipitation (plasma) or dilution (urine) step, carbidopa is derivatized at its hydrazine moiety by reaction for one hour with 2,4-pentanedione under acidic conditions and at 40°C...
September 8, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28911660/an-ecofriendly-green-liquid-chromatographic-method-for-simultaneous-determination-of-nicotinamide-and-clindamycin-phosphate-in-pharmaceutical-gel-for-acne-treatment
#4
Fawzia Ibrahim, Asmaa Kamal El-Deen, Samah Abo El Abass, Kuniyoshi Shimizu
A new green micellar liquid chromatographic method was developed and validated for the quantitative estimation of nicotinamide (NICO) and clindamycin phosphate (CLD) in bulk and pharmaceutical gel formulation. The analytes are well resolved in less than 6.0 minutes using micellar mobile phase consisting of 0.10M sodium dodecyl sulfate (SDS), 0.3% triethylamine, and 10% 2-propanol in 0.02M orthophosphoric acid at pH 3.0, running through an Eclipse XDB-C8 column (150 mm×4.6 mm, 5 μm particle size) with flow rate 1...
July 2017: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28905657/selecting-a-risk-based-sqc-procedure-for-a-hba1c-total-qc-plan
#5
Sten A Westgard, Hassan Bayat, James O Westgard
BACKGROUND: Recent US practice guidelines and laboratory regulations for quality control (QC) emphasize the development of QC plans and the application of risk management principles. The US Clinical Laboratory Improvement Amendments (CLIA) now includes an option to comply with QC regulations by developing an individualized QC plan (IQCP) based on a risk assessment of the total testing process. The Clinical and Laboratory Standards Institute (CLSI) has provided new practice guidelines for application of risk management to QC plans and statistical QC (SQC)...
September 1, 2017: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/28899861/quality-initiative-to-introduce-pediatric-venous-thromboembolism-risk-assessment-for-orthopedic-and-surgery-patients
#6
Laura H Brower, Nathalie Kremer, Katie Meier, Christine Wolski, Molly M McCaughey, Emily McKenna, Jennifer Anadio, Emily Eismann, Erin E Shaughnessy
BACKGROUND AND OBJECTIVES: Pediatric hospital-acquired venous thromboembolism (VTE) is costly, has high morbidity, and is often preventable. The objective of this quality-improvement effort was to increase the percentage of general surgery and orthopedic patients ≥10 years of age screened for VTE risk from 0% to 80%. METHODS: At a freestanding children's hospital, 2 teams worked to implement VTE risk screening for postoperative inpatients. The general surgery team used residents and nurse practitioners to perform screening whereas the orthopedic team initially used bedside nursing staff...
September 12, 2017: Hospital Pediatrics
https://www.readbyqxmd.com/read/28895488/a-systematic-review-of-psychological-interventions-for-sleep-and-fatigue-after-mild-traumatic-brain-injury
#7
Karen Sullivan, Hannah Blaine, Sherrie-Anne Kaye, Alice Theadom, Catherine Haden, Simon Smith
This review evaluated the evidence for psychological interventions to improve sleep and reduce fatigue after mild traumatic brain injury (TBI). Eight electronic databases were searched up until August 2016 for studies that: (1) included adults; (2) tested intervention effectiveness on sleep quality and fatigue, post-acutely; (3) applied a broadly-defined psychological intervention (e.g., cognitive behavioural therapy [CBT], counselling, or education). Only randomized controlled trials were eligible for inclusion...
September 12, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28895063/considerations-in-the-use-of-body-mass-change-to-estimate-change-in-hydration-status-during-a-161-kilometer-ultramarathon-running-competition
#8
Martin D Hoffman, Eric D B Goulet, Ronald J Maughan
Hydration guidelines found in the scientific and popular literature typically advise that body mass losses beyond 2% should be avoided during exercise. In this work, we demonstrate that these guidelines are not applicable to prolonged exercise of several hours where body mass loss does not reflect an equivalent loss of body water due to the effects of body mass change from substrate use, release of water bound with muscle and liver glycogen, and production of water during substrate metabolism. These effects on the body mass loss required to maintain body water balance are shown for a 161-km mountain ultramarathon running competition participant utilizing published data for the total energy cost, exogenous energy consumption and percentage from each fuel source, average participant body mass, and the extent of soft tissue fluid accumulation during an ultramarathon...
September 11, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28889364/open-complete-anterior-dislocation-of-the-sacro-iliac-joint-in-a-4-year-old-boy-a-case-report-of-a-rare-injury-with-5-year-follow-up
#9
Walid A Elnahal, Mahmoud Fahmy, Mehool Acharya
Pelvic fractures are uncommon in children and account for between 0.3 and 7.5% of all pediatric injuries. Open pelvic fractures only account for up to 12.9% of all pediatric pelvic fractures. An unusual case of open complete anterior sacro-iliac joint dislocation in a 4-year-old boy is presented with a long-term follow-up. The multidisciplinary approach is reported with review of the current literature. A 4-year-old male presented to our institution in January 2012 after having been run over by a tractor. He presented with gross hemodynamical instability, MISS of 25, and an unstable lateral compression type III pelvic fracture with complete anterior dislocation of the left hemipelvis and a groin wound extending into the left thigh...
September 9, 2017: Strategies in Trauma and Limb Reconstruction
https://www.readbyqxmd.com/read/28888940/environmental-change-in-a-modified-catchment-downstream-of-a-gold-mine-solomon-islands
#10
Simon Albert, Charlotte Kvennefors, Krista Jacob, Joshua Kera, Alistair Grinham
Solomon Islands is rapidly developing its natural resource exploitation sector, but data needed to assess consequent environmental impacts are scarce. We assessed catchments surrounding the Gold Ridge gold mine (Guadalcanal, Solomon Islands) and found that extensive changes in river course, and water and sediment quality have occurred downstream of the gold mine since its development. Sediment run-off from exposed areas associated with the mine pit has increased, elevating turbidity (up to 2450 NTU) and metal and arsenic levels, with levels of the latter being up to 0...
September 7, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28888884/prevalence-of-antimicrobial-resistance-and-integron-gene-cassettes-in-escherichia-coli-isolated-from-yaks-poephagus-grunniens-in-aba-tibetan-autonomous-prefecture-china
#11
Xin Yang, Wencheng Zou, Jinxin Zeng, Shengze Xie, Tianwu An, Xiaolin Luo, Danyu Chen, Lan Feng, Guangyang Cheng, Run Cai, Qianru Huang, Hongning Wang
BACKGROUND: Escherichia coli (E. coli) is one of the most relevant opportunistic pathogenic bacteria as it may cause severe morbidity and mortality in yaks (poephagus grunniens). In recent years, several kinds of antibiotics have been widely used in Tibetan areas to treat the bacterial diseases, resulting in serious repercussions on the bacterial antibiotic resistance in yaks. This investigation was conducted in order to determine the prevalence of antimicrobial resistance and integron gene cassettes in E...
September 6, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28876479/relationship-between-adherence-to-individual-goals-within-the-5-2-1-0-guidelines-for-obesity-prevention-and-number-of-pacer-laps-in-adolescents
#12
Kibum Cho, Emily Jones, Christa Lilly, Sean Bulger, Luciana Braga, Eloise Elliott
BACKGROUND: The purpose of this study was to evaluate the relationship between adolescents' adherence to the 5-2-1-0 goals and the number of completed Progressive Cardiovascular Endurance Run (PACER) laps. METHODS: Participants included 1792 students aged 10 to 16 years who were randomly selected across 9 data collection periods between 2012 and 2014. The Survey of Physical Activity and Nutrition was used to measure time spent in physical activity and sedentary behavior, and dietary intake and the dependent variable was the number of PACER laps achieved...
October 2017: Journal of School Health
https://www.readbyqxmd.com/read/28873416/cost-effectiveness-analysis-of-use-of-a-polypill-versus-usual-care-or-best-practice-for-primary-prevention-in-people-at-high-risk-of-cardiovascular-disease
#13
Sue Jowett, Pelham Barton, Andrea Roalfe, Kate Fletcher, F D Richard Hobbs, Richard J McManus, Jonathan Mant
BACKGROUND: Clinical trials suggest that use of fixed-dose combination therapy ('polypills') can improve adherence to medication and control of risk factors of people at high risk of cardiovascular disease (CVD) compared to usual care, but cost-effectiveness is unknown. OBJECTIVE: To determine whether a polypill is cost-effective compared to usual care and optimal guideline-recommended treatment for primary prevention in people already on statins and/or blood pressure lowering therapy...
2017: PloS One
https://www.readbyqxmd.com/read/28873360/bioanalysis-of-monomethyl-fumarate-in-human-plasma-by-a-sensitive-and-rapid-lc-ms-ms-method-and-its-pharmacokinetic-application-lc-ms-ms-determination-of-monomethyl-fumarate-in-human-plasma
#14
Imam Pasha S, Murali Balaram Varanasi, Ibrahim Mohammed
Dimethyl fumarate (DMF) is the methyl ester of fumaric acid, after oral administration completely converts to its active metabolite monomethyl fumarate (MMF). A simple, rapid and sensitive LC-MS/MS method was developed and validated for the quantification of MMF in human plasma. Monomethyl fumarate d3 was used as an internal standard (IS). The analyte and the IS were extracted from plasma using a selective solid phase extraction technique. The clean samples were chromatographed on a C18 column using formic acid and acetonitrile (25:75, v/v) as mobile phase...
August 23, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28862306/novel-hplc-uv-method-for-simultaneous-determination-of-fat-soluble-vitamins-and-coenzyme-q10-in-medicines-and-supplements
#15
Žane Temova-Rakuša, Eva Srečnik, Robert Roškar
A precise, accurate and rapid HPLC-UV method for simultaneous determination of fat-soluble vitamins (vitamin D3, E-acetate, K1, β-carotene, A-palmitate) and coenzyme Q10 was developed and validated according to ICH guidelines. Optimal chromatographic separation of the analytes in minimal analysis time (8 min) was achieved on a Luna C18 150 × 4.6 mm column using a mixture of acetonitrile, tetrahydrofuran and water (50:45:5, v/v/v). The described reversed phase HPLC method is the first published for quantification of these five fat-soluble vitamins and coenzyme Q10 within a single chromatographic run...
September 2017: Acta Chimica Slovenica
https://www.readbyqxmd.com/read/28862041/the-use-of-free-non-dementia-specific-apps-on-ipad-to-conduct-group-communication-exercises-for-individuals-with-alzheimer-s-disease-innovative-practice
#16
Anthony Pak-Hin Kong
This study examined the use of various iPad Apps to conduct group cognitive exercises for clients with mild or early stage dementia of Alzheimer's type. A list of free non-dementia-specific Apps suitable for group sessions was compiled. The procedures in choosing these Apps and determining the most successful ones for group exercises were discussed. Based on participants' and professionals' responses to the use of these Apps, the results would render practitioners useful guidelines in replicating and running technology-based training for individuals with dementia...
January 1, 2017: Dementia
https://www.readbyqxmd.com/read/28856233/performance-evaluation-of-enzyme-immunoassay-for-voriconazole-therapeutic-drug-monitoring-with-automated-clinical-chemistry-analyzers
#17
Yongbum Jeon, Minje Han, Eun Young Han, Kyunghoon Lee, Junghan Song, Sang Hoon Song
OBJECTIVE: Voriconazole is a triazole antifungal developed for the treatment of fungal infectious disease, and the clinical utility of its therapeutic drug monitoring has been evaluated. Recently, a new assay for analyzing the serum voriconazole concentration with an automated clinical chemistry analyzer was developed. We evaluated the performance of the new assay based on standardized protocols. METHODS: The analytical performance of the assay was evaluated according to its precision, trueness by recovery, limit of quantitation, linearity, and correlation with results from liquid chromatography-tandem mass spectrometry (LC-MS/MS)...
August 2017: Pract Lab Med
https://www.readbyqxmd.com/read/28852784/-orthopedic-surgery-with-limited-resources-after-mass-disasters-and-during-armed-conflicts-first-international-guidelines-for-the-management-of-limb-injuries-and-the-experience-of-doctors-without-borders
#18
REVIEW
Inga Osmers
Disasters and armed conflicts are often the unfortunate basis for aid projects run by Doctors Without Borders/Médecins Sans Frontières (MSF). The nature of war and disasters means that surgery is an integral part of this medical emergency aid. In these situations, resources are usually limited. As a result, surgical work in these contexts differs significantly from the daily routine of a surgeon working in a highly resourced hospital. The principles of surgery do not change but surgeons must adapt their tactical approach to the changed context otherwise there is a high risk of failing to improve the health of patients and potentially jeopardizing their prospects for recovery...
August 29, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28852102/conditions-for-barrel-and-clam-shell-liquid-drops-to-move-on-bio-inspired-conical-wires
#19
Cheng Luo, Xiang Wang
It has been reported that, in a foggy environment, water drops with either barrel or clam-shell shapes are capable of self-running on conical wire-like structures, such as cactus spines, spider silk, and water striders' legs. On the other hand, the corresponding moving mechanisms are still not quite understood. For instance, it is unclear under what conditions clam-shell drops would move from the tip towards the root on a conical wire. In this work, based on the balance of forces, we derive conditions for a drop to self-transport towards or away from the root...
August 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28851860/a-qualitative-study-of-gp-nurse-and-practice-manager-views-on-using-targeted-case-finding-to-identify-patients-with-copd-in-primary-care
#20
Rachael H Summers, Taniya Sharmeen, Kate Lippiett, Kate Gillett, Carla Astles, Linh Vu, Mark Stafford-Watson, Anne Bruton, Mike Thomas, Tom Wilkinson
'Finding the missing millions' with chronic obstructive pulmonary disease became part of the Department of Health strategy for England in 2010. Targeted case-finding within primary care is one potential pro-active strategy, but currently little is known about the views of healthcare professionals on this approach. In this study, 36 healthcare professionals (12 GPs, 14 nurses, and 10 practice managers) from 34 UK practices participated in semi-structured telephone interviews about targeted case-finding. Interviews followed an interview guide, were audio-recorded, transcribed verbatim, coded and analysed using 'Framework Approach'...
August 29, 2017: NPJ Primary Care Respiratory Medicine
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