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https://www.readbyqxmd.com/read/28109128/population-pharmacokinetics-and-pharmacodynamics-of-benralizumab-in-healthy-volunteers-and-patients-with-asthma
#1
B Wang, L Yan, Z Yao, L K Roskos
Benralizumab is a humanized, afucosylated, anti-interleukin-5 receptor α, immunoglobulin G (IgG) 1 κ monoclonal antibody. We developed a population pharmacokinetic (PK)/pharmacodynamic (PD) model for benralizumab by analyzing PK and blood eosinophil count data from two healthy volunteer studies (N = 48) and four studies in patients with asthma (N = 152). Benralizumab PK was dose-proportional and adequately described by a two-compartment model with first-order elimination from the central compartment and first-order absorption from the subcutaneous dosing site...
January 21, 2017: CPT: Pharmacometrics & Systems Pharmacology
https://www.readbyqxmd.com/read/28109063/chemical-variability-antioxidant-and-antifungal-activities-of-essential-oils-and-hydrosol-extract-of-calendula-arvensis-l-from-western-algeria
#2
Rania Belabbes, Mohammed El Amine Dib, Nassim Djabou, Faiza Ilias, Boufeldja Tabti, Jean Costa, Alain Muselli
The chemical composition of the essential oils and hydrosol extract from aerial parts of Calendula arvensis L. was investigated using GC-FID and GC/MS. Intra-species variations of the chemical compositions of essential oils from 18 Algerian sample locations were investigated using statistical analysis. Chemical analysis allowed the identification of fifty-three compounds amounting to 92.3-98.5% with yields varied of 0.09-0.36% and the main compounds were zingiberenol 1 (8.7-29.8%), eremoligenol (4.2-12.5%), β-curcumene (2...
January 21, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/28108877/a-moderated-mediation-model-of-hiv-related-stigma-depression-and-social-support-on-health-related-quality-of-life-among-incarcerated-malaysian-men-with-hiv-and-opioid-dependence
#3
Roman Shrestha, Michael Copenhaver, Alexander R Bazazi, Tania B Huedo-Medina, Archana Krishnan, Frederick L Altice
Although it is well established that HIV-related stigma, depression, and lack of social support are negatively associated with health-related quality of life (HRQoL) among people living with HIV (PLH), no studies to date have examined how these psychosocial factors interact with each other and affect HRQoL among incarcerated PLH. We, therefore, incorporated a moderated mediation model (MMM) to explore whether depression mediates the effect of HIV-related stigma on HRQoL as a function of the underlying level of social support...
January 20, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/28108665/fasiglifam-tak-875-alters-bile-acid-homeostasis-in-rats-and-dogs-a-potential-cause-of-drug-induced-liver-injury
#4
Francis S Wolenski, Andy Z X Zhu, Mike Johnson, Shaoxia Yu, Yuu Moriya, Takuya Ebihara, Vilmos Csizmadia, Jessica Grieves, Martin Paton, Mingxiang Liao, Christopher Gemski, Liping Pan, Majid Vakilynejad, Yvonne P Dragan, Swapan K Chowdhury, Patrick J Kirby
Fasiglifam (TAK-875), a Free Fatty Acid Receptor 1 (FFAR1) agonist in development for the treatment of type 2 diabetes, was voluntarily terminated in phase 3 due to adverse liver effects. A mechanistic investigation described in this manuscript focused on the inhibition of bile acid (BA) transporters as a driver of the liver findings. TAK-875 was an in vitro inhibitor of multiple influx (NTCP and OATPs) and efflux (BSEP and MRPs) hepatobiliary BA transporters at micromolar concentrations. Repeat dose studies determined that TAK-875 caused a dose-dependent increase in serum total BA in rats and dogs...
January 20, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28108567/role-of-the-frozen-elephant-trunk-procedure-for-chronic-aortic-dissection
#5
Eric E Roselli, Faisal G Bakaeen, Douglas R Johnston, Edward G Soltesz, Michael Z Tong
OBJECTIVES: Considering the chronic and progressive nature of aortic dissection, operative planning must anticipate the need for later interventions. We have increasingly used a modified version of the frozen elephant trunk repair operation to treat these patients. We review the indications, considerations for planning, and important operative details for performing frozen elephant trunk repair for chronic aortic dissection. METHODS: Frozen elephant trunk repair is performed using selective antegrade brain perfusion, direct placement of commercially available stent grafts with suture fixation in the aortic arch, and proximal aortic replacement...
January 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28108427/treatment-of-non-functional-pituitary-adenoma-post-operative-remnants-adjuvant-or-delayed-gamma-knife-radiosurgery
#6
Z H A Sadik, E H J Voormolen, P R A M Depauw, B Burhani, W A Nieuwlaat, J Verheul, S Leenstra, R Fleischeuer, P E J Hanssens
OBJECTIVE: It is still not clear whether Gamma knife Radiosurgery (GKRS) for non-functional pituitary adenomas (NFPA) should be used as a standard adjuvant postoperative therapy or applied when there is documented progression of the remnant on the follow-up (FU) MRI. METHODS: We performed a retrospective study of patients with non-functional pituitary adenomas who underwent primary surgery and GKRS between 2002 and 2015. Patients were divided into two groups based on the GKRS indication: adjuvant treatment (GKRS ≤6 months postoperatively) or delayed treatment (GKRS if documented progression occurred on the FU MRI)...
January 17, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28108412/deciphering-the-mechanistic-insight-into-the-stoichiometric-ratio-dependent-behavior-of-cu-ii-on-bsa-fibrillation
#7
Ajeet Singh, Poulami Datta, Lalit M Pandey
Various metal ions are recently implicated in protein aggregates and are associated with numerous neurodegenerative diseases. In the present work, we have scrutinized the effect of stoichiometric variation of Cu(II) on BSA fibrillation at physiological pH 7.4 through Thioflavin-T dye binding study, residual protein concentration, Fourier Transform Infrared spectroscopy (FTIR), Dynamic Light Scattering (DLS), Atomic Force Microscopy (AFM) and Isothermal Titration Calorimetry (ITC). Fibrillation kinetics was studied through ThT fluorescence, which illustrated dependency on stoichiometric ratio of Cu(II)...
January 17, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28108408/effect-of-drying-conditions-on-crystallinity-of-amylose-nanoparticles-prepared-by-nanoprecipitation
#8
Xiaoxia Yan, Yanjiao Chang, Qian Wang, Youjia Fu, Jiang Zhou
In this study, amylose nanoparticles prepared by nanoprecipitation were dried at different conditions. The crystalline structure, crystallinity, re-dispersibility and morphological characteristic of the amylose nanoparticles after drying were investigated. X-ray diffraction analysis revealed that the V-type crystalline structure of the amylose nanoparticles formed in the drying process instead of the precipitation process, and drying condition significantly affects the crystallinity. The temperature cycles drying at 4°C and 40°C considerably increased crystallinity of the amylose nanoparticles, 24h (4/40°C, 12h/12h) drying under 11% relative humidity could give rise to a crystallinity up to 50...
January 17, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28108332/sex-dependent-effects-of-early-life-inflammatory-pain-on-sucrose-intake-and-sucrose-associated-hippocampal-arc-expression-in-adult-rats
#9
Yoko O Henderson, Rebecca Nalloor, Almira Vazdarjanova, Anne Z Murphy, Marise B Parent
We hypothesize that dorsal hippocampal (dHC) neurons, which are critical for episodic memory, form a memory of a meal and inhibit the initiation of the next meal and the amount ingested during that meal. In support, we showed previously that (1) consuming a sucrose meal induces expression of the synaptic plasticity marker activity-regulated cytoskeleton-associated protein (Arc) in dHC neurons and (2) reversible inactivation of these neurons immediately following a sucrose meal accelerates the onset of the next meal and increases the size of that meal...
January 17, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28108302/biomarkers-associated-with-clinical-manifestations-in-fabry-disease-patients-with-a-late-onset-cardiac-variant-mutation
#10
Christiane Auray-Blais, Pamela Lavoie, Michel Boutin, Aimé Ntwari, Ting-Rong Hsu, Chun-Kai Huang, Dau-Ming Niu
BACKGROUND: Fabry disease is a lysosomal storage disorder with an incidence of 1:1600 for the late-onset IVS4+919G>A cardiac variant mutation in Taiwan. Signs and symptoms of this cardiac variant include left ventricular hypertrophy, mitral insufficiency and/or arrhythmias. The search for biomarkers that might predict the clinical outcomes and guide treatment options is important. We thus investigated relationships between Fabry disease biomarkers (such as globotriaosylceramide (Gb3), globotriaosylsphingosine (lyso-Gb3)/related analogues) and age, gender, enzyme activity, clinical manifestations and severity of the disease in these patients...
January 17, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28108204/the-dietary-approaches-to-stop-hypertension-diet-cognitive-function-and-cognitive-decline-in-american-older-women
#11
Agnes A M Berendsen, Jae H Kang, Ondine van de Rest, Edith J M Feskens, Lisette C P G M de Groot, Francine Grodstein
OBJECTIVES: To examine the association between long-term adherence to the Dietary Approaches to Stop Hypertension (DASH) diet with cognitive function and decline in older American women. DESIGN: Prospective cohort study. SETTING: The Nurses' Health Study, a cohort of registered nurses residing in 11 US states. PARTICIPANTS: A total of 16,144 women from the Nurses' Health Study, aged ≥70 years, who underwent cognitive testing a total of 4 times by telephone from 1995 to 2001 (baseline), with multiple dietary assessments between 1984 and the first cognitive examination...
January 17, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/28108070/corrigendum-to-regulation-of-polycomb-group-genes-psc-and-su-z-2-in-drosophila-melanogaster-mech-dev-128-2012-536-547
#12
Sung Yeon Park, Yuri B Schwartz, Tatyana G Kahn, Dalal Asker, Vincenzo Pirrotta
No abstract text is available yet for this article.
January 17, 2017: Mechanisms of Development
https://www.readbyqxmd.com/read/28107923/a-sensitive-and-rapid-uflc-apci-ms-ms-bioanalytical-method-for-quantification-of-endogenous-and-exogenous-vitamin-k1-isomers-in-human-plasma-development-validation-and-first-application-to-a-pharmacokinetic-study
#13
Nagaraj Kumar Nannapaneni, Sunil S Jalalpure, Rajendraprasad Muppavarapu, Sunil Kumar Sirigiri
Due to lack of suitable bioanalytical methods in previous literature, for simultaneous estimation of Vitamin K1 isomers, in compliance with the current regulatory expectation, we aimed to develop a sensitive and rapid method with UFLC-APCI-MS/MS (ultrafast liquid chromatography - tandem mass spectrometry) using human plasma. A simple and cost effective procedure was implemented with the combination of protein precipitation and liquid extraction, to isolate the targets from plasma sample, while achieving an insignificant matrix effects and high recovery (≥88...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107689/development-and-validation-of-a-liquid-chromatography-tandem-mass-spectrometry-method-for-the-assay-of-tafamidis-in-rat-plasma-application-to-a-pharmacokinetic-study-in-rats
#14
Hun-Chan Hyun, Jong-Woo Jeong, Hye-Rim Kim, Ji-Hoon Oh, Jong-Hwa Lee, Sungwook Choi, Yeon-Soo Kim, Tae-Sung Koo
Tafamidis is a first-in-class inhibitor of transthyretin amyloid fibril formation. It has been available in Argentina, Japan, and Mexico for the treatment of transthyretin amyloidosis in adult patients with early-stage symptomatic polyneuropathy. In this study, a rapid and sensitive liquid chromatography-tandem mass spectrometry method was developed and validated for the assay of tafamidis in rat plasma. The method was also assessed for its applicability to pharmacokinetic studies in rats. Tafamidis was extracted from rat plasma by the liquid-liquid extraction method using hydrochloric acid and ethyl acetate...
January 10, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28107647/programmed-ribosomal-frameshifting-generates-a-copper-transporter-and-a-copper-chaperone-from-the-same-gene
#15
Sezen Meydan, Dorota Klepacki, Subbulakshmi Karthikeyan, Tõnu Margus, Paul Thomas, John E Jones, Yousuf Khan, Joseph Briggs, Jonathan D Dinman, Nora Vázquez-Laslop, Alexander S Mankin
Metal efflux pumps maintain ion homeostasis in the cell. The functions of the transporters are often supported by chaperone proteins, which scavenge the metal ions from the cytoplasm. Although the copper ion transporter CopA has been known in Escherichia coli, no gene for its chaperone had been identified. We show that the CopA chaperone is expressed in E. coli from the same gene that encodes the transporter. Some ribosomes translating copA undergo programmed frameshifting, terminate translation in the -1 frame, and generate the 70 aa-long polypeptide CopA(Z), which helps cells survive toxic copper concentrations...
January 19, 2017: Molecular Cell
https://www.readbyqxmd.com/read/28107635/atomic-number-dependent-structural-transitions-in-ordered-lanthanide-monolayers-role-of-the-hydration-shell
#16
Mitchell Miller, Miaoqi Chu, Binhua Lin, Wei Bu, Pulak Dutta
When lanthanide ions are present in the aqueous subphase of a floating monolayer (Langmuir film), the ions attracted to the interface will in many cases form commensurate and/or incommensurate two-dimensional structures. These lattices depend not only on the molecules forming the monolayer, but also on the atomic number of the lanthanide, with a sudden change between the lattice formed by lighter ions and that formed by heavier ions under a given monolayer. Since there are few other relevant differences between the lanthanides, we attribute the Z-dependent 'transition' to the number of water molecules associated with each ion...
January 20, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28107395/prevalence-of-pre-analytical-errors-in-clinical-chemistry-diagnostic-labs-in-sulaimani-city-of-iraqi-kurdistan
#17
Dereen Najat
BACKGROUND: Laboratory testing is roughly divided into three phases: a pre-analytical phase, an analytical phase and a post-analytical phase. Most analytical errors have been attributed to the analytical phase. However, recent studies have shown that up to 70% of analytical errors reflect the pre-analytical phase. The pre-analytical phase comprises all processes from the time a laboratory request is made by a physician until the specimen is analyzed at the lab. Generally, the pre-analytical phase includes patient preparation, specimen transportation, specimen collection and storage...
2017: PloS One
https://www.readbyqxmd.com/read/28107380/novel-tools-in-determining-the-physiological-demands-and-nutritional-practices-of-ontario-firerangers-during-fire-deployments
#18
A H Robertson, C Larivière, C R Leduc, Z McGillis, T Eger, A Godwin, M Larivière, S C Dorman
INTRODUCTION: The seasonal profession of wildland fire fighting in Canada requires individuals to work in harsh environmental conditions that are physically demanding. The purpose of this study was to use novel technologies to evaluate the physiological demands and nutritional practices of Canadian FireRangers during fire deployments. METHODS: Participants (n = 21) from a northern Ontario Fire Base volunteered for this study and data collection occurred during the 2014 fire season and included Initial Attack (IA), Project Fire (P), and Fire Base (B) deployments...
2017: PloS One
https://www.readbyqxmd.com/read/28107356/integrity-of-induced-pluripotent-stem-cell-ipsc-derived-megakaryocytes-as-assessed-by-genetic-and-transcriptomic-analysis
#19
Kai Kammers, Margaret A Taub, Ingo Ruczinski, Joshua Martin, Lisa R Yanek, Alyssa Frazee, Yongxing Gao, Dixie Hoyle, Nauder Faraday, Diane M Becker, Linzhao Cheng, Zack Z Wang, Jeff T Leek, Lewis C Becker, Rasika A Mathias
Previously, we have described our feeder-free, xeno-free approach to generate megakaryocytes (MKs) in culture from human induced pluripotent stem cells (iPSCs). Here, we focus specifically on the integrity of these MKs using: (1) genotype discordance between parent cell DNA to iPSC cell DNA and onward to the differentiated MK DNA; (2) genomic structural integrity using copy number variation (CNV); and (3) transcriptomic signatures of the derived MK lines compared to the iPSC lines. We detected a very low rate of genotype discordance; estimates were 0...
2017: PloS One
https://www.readbyqxmd.com/read/28107282/early-posthepatoportoenterostomy-predictors-of-native-liver-survival-in-biliary-atresia
#20
Scott Nightingale, Michael O Stormon, Edward V O'Loughlin, Albert Shun, Gordon Thomas, Eric I Benchimol, Andrew S Day, Susan Adams, Edward Shi, Chee Y Ooi, Binita M Kamath, Annie Fecteau, Jacob C Langer, Eve A Roberts, Simon C Ling, Vicky L Ng
OBJECTIVES: Most infants with biliary atresia (BA) require liver transplantation (LT) after hepatoportoenterostomy (HPE), including those who initially clear jaundice. The aim of the present study was to identify clinical and routine laboratory factors in infants with BA post-HPE that predict native liver survival at 2 years. METHODS: A retrospective cohort study was conducted in 217 patients with BA undergoing HPE in Sydney, Australia and Toronto, Canada between January 1986 and July 2009...
February 2017: Journal of Pediatric Gastroenterology and Nutrition
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