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Precision 2.0

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https://www.readbyqxmd.com/read/28645021/development-a-validated-highly-sensitive-lc-ms-ms-method-for-simultaneous-quantification-of-ledipasvir-sofosbuvir-and-its-major-metabolite-gs-331007-in-human-plasma-application-to-a-human-pharmacokinetic-study
#1
Ola M Abdallah, Ahmed M Abdel-Megied, Amira S Gouda
A highly sensitive and rapid LC-MS/MS method was developed, fully optimized and validated for the simultaneous determination of Ledipasvir (LED) and Sofosbuvir (SOF) in the presence of its major metabolite GS-331007 in human plasma using Daclatasvir as internal standard (IS). The extraction of analytes and IS from plasma was performed using liquid-liquid extraction with ethyl acetate. The chromatographic separation of these prepared samples was achieved on Xterra MS C8 column (4.6×50mm,5μm) using gradient elution with a mobile phase of ammonium formate buffer (pH 3...
June 20, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28644115/evaluation-of-the-effectiveness-and-cost-effectiveness-of-lightweight-fibreglass-heel-casts-in-the-management-of-ulcers-of-the-heel-in-diabetes-a-randomised-controlled-trial
#2
William Jeffcoate, Frances Game, Vivienne Turtle-Savage, Alison Musgrove, Patricia Price, Wei Tan, Lucy Bradshaw, Alan Montgomery, Deborah Fitzsimmons, Angela Farr, Thomas Winfield, Ceri Phillips
BACKGROUND: Ulcers of the foot in people with diabetes mellitus are slow to heal and result in considerable cost and patient suffering. The prognosis is worst for ulcers of the heel. OBJECTIVE: To assess both the clinical effectiveness and the cost-effectiveness of lightweight fibreglass casts in the management of heel ulcers. DESIGN: A pragmatic, multicentre, parallel, observer-blinded randomised controlled trial. A central randomisation centre used a computer-generated random number sequence to allocate participants to groups...
May 2017: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/28643485/accuracy-assessment-of-five-equations-used-for-estimating-the-glomerular-filtration-rate-in-korean-adults
#3
Tae Dong Jeong, Eun Jung Cho, Woochang Lee, Sail Chun, Ki Sook Hong, Won Ki Min
BACKGROUND: We aimed to assess the performance of the five creatinine-based equations commonly used for estimates of the glomerular filtration rate (eGFR), namely, the creatinine-based Chronic Kidney Disease Epidemiology Collaboration (CKD-EPIcr), Asian CKD-EPI, revised Lund-Malmö (revised LM), full age spectrum (FAS), and Korean FAS equations, in the Korean population. METHODS: A total of 1,312 patients, aged 20 yr and above who underwent ⁵¹Cr-EDTA GFR measurements (mGFR), were enrolled...
September 2017: Annals of Laboratory Medicine
https://www.readbyqxmd.com/read/28642453/cystatin-c-based-equation-does-not-accurately-estimate-the-glomerular-filtration-in-japanese-living-kidney-donors
#4
Kazuma Tsujimura, Morihito Ota, Kiyoshi Chinen, Takayuki Adachi, Kiyomitsu Nagayama, Masato Oroku, Morikuni Nishihira, Yoshiki Shiohira, Kunitoshi Iseki, Hideki Ishida, Kazunari Tanabe
BACKGROUND Precise evaluation of a living donor's renal function is necessary to ensure adequate residual kidney function after donor nephrectomy. Our aim was to evaluate the feasibility of estimating glomerular filtration rate (GFR) using serum cystatin-C prior to kidney transplantation. MATERIAL AND METHODS Using the equations of the Japanese Society of Nephrology, we calculated the GFR using serum creatinine (eGFRcre) and cystatin C levels (eGFRcys) for 83 living kidney donors evaluated between March 2010 and March 2016...
June 23, 2017: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/28642212/filtering-entities-to-optimize-identification-of-adverse-drug-reaction-from-social-media-how-can-the-number-of-words-between-entities-in-the-messages-help
#5
Redhouane Abdellaoui, Stéphane Schück, Nathalie Texier, Anita Burgun
BACKGROUND: With the increasing popularity of Web 2.0 applications, social media has made it possible for individuals to post messages on adverse drug reactions. In such online conversations, patients discuss their symptoms, medical history, and diseases. These disorders may correspond to adverse drug reactions (ADRs) or any other medical condition. Therefore, methods must be developed to distinguish between false positives and true ADR declarations. OBJECTIVE: The aim of this study was to investigate a method for filtering out disorder terms that did not correspond to adverse events by using the distance (as number of words) between the drug term and the disorder or symptom term in the post...
June 22, 2017: JMIR Public Health and Surveillance
https://www.readbyqxmd.com/read/28642058/ex-vivo-investigation-on-the-postoperative-integrity-of-the-apical-constriction-after-the-sole-use-of-electronic-working-length-determination
#6
Michael Wolgin, Markus J Grundmann, Jörg P Tchorz, Wilhelm Frank, Andrej M Kielbassa
AIM: The present study investigated the accuracy of root canal preparation with regard to the integrity of the apical constriction (AC) using two different working length determination approaches: (1) the electronic method of working length determination (EWLD), and (2) the radiologic "gold standard" method (GS). METHODOLOGY: Simulation models were constructed by arranging extracted human teeth by means of silicon bolstered gingiva masks, along with a conductive medium (alginate)...
June 19, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28641982/temporal-artery-and-axillary-thermometry-comparison-with-rectal-thermometry-in-children-presenting-to-the-emergency-department
#7
Adam J Forrest, Michael L Juliano, Sean P Conley, Patrick D Cronyn, Andrea McGlynn, Jonathan D Auten
BACKGROUND: Accurate temperature readings, often obtained rectally, are an important part of the initial evaluation of pediatric patients in the Emergency Department. Temporal artery thermometry (TAT) is one way to noninvasively measure temperature. We sought to compare the accuracy of axillary and temporal artery temperatures compared to rectal. METHODS: This prospective study included children age 0-36months presenting to the Emergency Department of a large military treatment facility...
June 11, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28641833/glyoxal-and-methylglyoxal-as-urinary-markers-of-diabetes-determination-using-a-dispersive-liquid-liquid-microextraction-procedure-combined-with-gas-chromatography-mass-spectrometry
#8
M Pastor-Belda, A J Fernández-García, N Campillo, M D Pérez-Cárceles, M Motas, M Hernández-Córdoba, P Viñas
Glyoxal (GO) and methylglyoxal (MGO) are α-oxoaldehydes that can be used as urinary diabetes markers. In this study, their levels were measured using a sample preparation procedure based on salting-out assisted liquid-liquid extraction (SALLE) and dispersive liquid-liquid microextraction (DLLME) combined with gas chromatography-mass spectrometry (GC-MS). The effect of the derivatization reaction with 2,3-diaminonaphthalene, the addition of acetonitrile and sodium chloride to urine, and the DLLME step using the acetonitrile extract as dispersant solvent and carbon tetrachloride as extractant solvent were carefully optimized...
June 16, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28641648/-change-of-thrombelastography-in-children-s-dic-and-analysis-of-its-sensitivity-and-specificity-for-diagnosis-of-dic
#9
Wen-Hao Yuan, Han-Chu Liu, Ling-Kong Zeng, Xiao-Yan Liu, Ling-Xia Zhao, Lu-Xia Mo
OBJECTIVE: To investigate the influence of thrombelastography index changes on its sensitivity and specificity for diagnosis of disseminated intravascular coagulation (DIC) in children. METHODS: A total of 149 children with DIC in our hospital from June 2013 to June 2016 were selected in DIC group, while 106 cases of non-DIC, including healthy children and children with diseases easily confused with DIC, were selected as non-DIC(control) group. The thrombelastography, D-dimer, coagulation functions including prothrombintime (PT), activated partial thromboplastin time (APTT), fibrinogen (FIB) and fibin degradation product (FDP), congental coagulation disorders and platelet count were detected in DIC and non-DIC groups; the statistics of data was performed and the sensitivity and specificity of thromelastraphy indexes such as R time, α angle MA value and A value were evaluated; the relationship of DIC with indexes was analyzed...
June 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28640882/quantitation-of-underivatized-branched-chain-amino-acids-in-sport-nutritional-supplements-by-capillary-electrophoresis-with-direct-or-indirect-uv-absorbance-detection
#10
Jun Qiu, Jinhao Wang, Zhongqi Xu, Huiqing Liu, Jie Ren
The branched-chain amino acids (BCAAs) including leucine (Leu), isoleucine (Ile) and valine (Val) play a pivotal role in the human body. Herein, we developed capillary electrophoresis (CE) coupled with conventional UV detector to quantify underivatized BCAAs in two kinds of sport nutritional supplements. For direct UV detection at 195 nm, the BCAAs (Leu, two enantiomers of Ile and Val) were separated in a background electrolyte (BGE) consisting of 40.0 mmol/L sodium tetraborate, and 40.0 mmol/L β-cyclodextrin (β-CD) at pH 10...
2017: PloS One
https://www.readbyqxmd.com/read/28640869/development-of-an-automated-size-based-filtration-system-for-isolation-of-circulating-tumor-cells-in-lung-cancer-patients
#11
Satomi Yagi, Yasuhiro Koh, Hiroaki Akamatsu, Kuninobu Kanai, Atsushi Hayata, Nahomi Tokudome, Keiichiro Akamatsu, Katsuya Endo, Seita Nakamura, Masayuki Higuchi, Hisashige Kanbara, Masanori Nakanishi, Hiroki Ueda, Nobuyuki Yamamoto
Circulating tumor cells (CTCs), defined as tumor cells circulating in the peripheral blood of patients with solid tumors, are relatively rare. Diagnosis using CTCs is expected to help in the decision-making for precision cancer medicine. We have developed an automated microcavity array (MCA) system to detect CTCs based on the differences in size and deformability between tumor cells and normal blood cells. Herein, we evaluated the system using blood samples from non-small-cell lung cancer (NSCLC) and small-cell lung cancer (SCLC) patients...
2017: PloS One
https://www.readbyqxmd.com/read/28640625/dust-effects-on-nucleation-kinetics-and-nanoparticle-product-size-distributions-illustrative-case-study-of-a-prototype-ir-0-n-transition-metal-nanoparticle-formation-system
#12
Saim Özkar, Richard G Finke
The question is addressed if dust is kinetically important in the nucleation and growth of Ir(0)n nanoparticles formed from [Bu4N]5Na3(1,5-COD)Ir(I)·P2W15Nb3O62 (hereafter [(COD)Ir·POM](8-)), reduced by H2 in propylene carbonate solvent. Following a concise review of the (often-neglected) literature addressing dust in nucleation phenomena dating back to the late 1800s, the nucleation and growth kinetics of the [(COD)Ir·POM](8-) precatalyst system are examined for the effects of 0.2 μm microfiltration of the solvent and precatalyst solution, of rinsing the glassware with that microfiltered solvent, of silanizing the glass reaction vessel, for the addition of <0...
June 22, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28639415/anti-vascular-endothelial-growth-factor-for-diabetic-macular-oedema-a-network-meta-analysis
#13
REVIEW
Gianni Virgili, Mariacristina Parravano, Jennifer R Evans, Iris Gordon, Ersilia Lucenteforte
BACKGROUND: Diabetic macular oedema (DMO) is a common complication of diabetic retinopathy. Antiangiogenic therapy with anti-vascular endothelial growth factor (anti-VEGF) modalities can reduce oedema and thereby improve vision and prevent further visual loss. These drugs have replaced laser photocoagulation as the standard of care for people with DMO. OBJECTIVES: The 2014 update of this review found high-quality evidence of benefit with antiangiogenic therapy with anti-VEGF modalities, compared to laser photocoagulation, for the treatment of DMO...
June 22, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28639387/determining-the-orientation-angle-of-directional-leads-for-deep-brain-stimulation-using-computed-tomography-and-digital-x-ray-imaging-a-phantom-study
#14
Alexander Sitz, Mauritius Hoevels, Alexandra Hellerbach, Andreas Gierich, Klaus Luyken, Till A Dembek, Martin Klehr, Jochen Wirths, Veerle Visser-Vandewalle, Harald Treuer
PURPOSE: Orientating the angle of directional leads for deep brain stimulation (DBS) in an axial plane introduces a new degree of freedom that is indicated by embedded anisotropic directional markers. Our aim was to develop algorithms to determine lead orientation angles from computed tomography (CT) and stereotactic x-ray imaging using standard clinical protocols, and subsequently assess the accuracy of both methods. METHODS: In CT the anisotropic marker artifact was taken as a signature of the lead orientation angle and analyzed using discrete Fourier transform of circular intensity profiles...
June 22, 2017: Medical Physics
https://www.readbyqxmd.com/read/28639069/the-application-of-3d-printing-technology-for-simultaneous-orthognathic-surgery-and-mandibular-contour-osteoplasty-in-the-treatment-of-craniofacial-deformities
#15
Yanju Xiao, Xiumei Sun, Lin Wang, Yaoyao Zhang, Kai Chen, Guomin Wu
BACKGROUND: Because of the limitation of specific preoperative design and surgical templates, orthognathic surgery and mandibular contour osteoplasty are generally performed in two stages. Three-dimensional printing technology has improved the accuracy of the surgery and results in good surgical predictability easily. This study aims to confirm the effectiveness, feasibility and precision of simultaneous mandibular contour osteoplasty and orthognathic surgery with the assistance of 3D printing technology...
June 21, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28638892/in-vivo-effect-of-guiding-herb-radix-platycodonis-and-radix-cyathulae-on-paeoniflorin-pharmacokinetics-of-xuefu-zhuyu-tang-in-rats
#16
Song-Qi Tang, Yun-Hui Chen, Xi-Ping Chen, Xiao-Dan Zhang, Wei Huang
BACKGROUND: Xuefu Zhuyu Tang (XFZYT), first recorded in Correction of Errors in Medical Works by Qing-ren Wang, has been proven reliable and effective for curing various diseases such as atherosclerosis, hypertension, hyperlipidemia, and angina pectoris. It consists of 11 herbs and two of them, Radix platycodonis and Radix cyathulae, have been traditionally considered as guiding herbs and deeply valued by tens of millions of Chinese medicine practitioners. Do Radix platycodonis and Radix cyathulae affect the pharmacokinetics of the effective constituent-paeoniflorin of XFZYT? If yes, in what way? This study aims to answer these questions...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28637910/excellent-diagnostic-characteristics-for-ultra-fast-gene-profiling-of-defa1-il1b-ltf-in-the-detection-of-prosthetic-joint-infections
#17
Regina Fillerova, Jiri Gallo, Martin Radvansky, Veronika Kraiczova, Milos Kudelka, Eva Kriegova
The timely and exact diagnosis of prosthetic joint infection (PJI) is crucial for surgical decision-making. Intra-operatively, delivery of the result within an hour is required. Alpha-defensin lateral immunoassay of joint fluid (JF) is precise in the intra-operative exclusion of PJI, however in patients with a limited amount of JF and/or when the JF is bloody this test is unhelpful. Important information is hidden in the periprosthetic tissues that could much better reflect the current status of implant pathology...
June 21, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28637606/inter-examiner-classification-reliability-of-mechanical-diagnosis-and-therapy-for-extremity-problems-systematic-review
#18
REVIEW
Hiroshi Takasaki, Kousuke Okuyama, Richard Rosedale
BACKGROUND: Mechanical Diagnosis and Therapy (MDT) is used in the treatment of extremity problems. Classifying clinical problems is one method of providing effective treatment to a target population. Classification reliability is a key factor to determine the precise clinical problem and to direct an appropriate intervention. OBJECTIVES: To explore inter-examiner reliability of the MDT classification for extremity problems in three reliability designs: 1) vignette reliability using surveys with patient vignettes, 2) concurrent reliability, where multiple assessors decide a classification by observing someone's assessment, 3) successive reliability, where multiple assessors independently assess the same patient at different times...
February 2017: Musculoskeletal Science & Practice
https://www.readbyqxmd.com/read/28636631/incidence-and-mortality-due-to-snakebite-in-the-americas
#19
Jean-Philippe Chippaux
BACKGROUND: Better knowledge of the epidemiological characteristics of snakebites could help to take measures to improve their management. The incidence and mortality of snakebites in the Americas are most often estimated from medical and scientific literature, which generally lack precision and representativeness. METHODOLOGY/PRINCIPAL FINDINGS: Authors used the notifications of snakebites treated in health centers collected by the Ministries of Health of the American countries to estimate their incidence and mortality...
June 21, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28635303/increased-pulse-wave-velocity-in-systemic-lupus-erythematosus-a-meta-analysis
#20
Peng Wang, Yan-Mei Mao, Chan-Na Zhao, Li-Na Liu, Xiao-Mei Li, Xiang-Pei Li, Hai-Feng Pan
Systemic lupus erythematosus (SLE) is associated with increased cardiovascular risk. This study aims to derive a more precise estimation on pulse wave velocity (PWV) level in patients with SLE and related factors. A literature search was performed using PubMed, EMBASE, and The Cochrane Library databases, studies published up to February 28, 2017, in English. Pooled standardized mean difference (SMD) with 95% confidence interval (CI) was calculated by fixed-effect or random-effect model analysis. Heterogeneity test was performed by the Q statistic and quantified using I(2); publication bias was evaluated using a funnel plot and Egger's linear regression test...
January 1, 2017: Angiology
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