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https://www.readbyqxmd.com/read/28622622/characterization-of-drug-load-variants-in-a-thiol-linked-antibody-drug-conjugate-using-multidimensional-chromatography
#1
Jonathan J Gilroy, Catherine M Eakin
The biological complexity associated with biotherapeutics such as antibody-drug conjugates (ADCs) requires extensive characterization to ensure product quality consistency, safety, and efficacy. ADCs generated via partial reduction of antibody interchain disulfide bonds result in a distribution of variants containing 0-8 conjugated drugs. Hydrophobic interaction chromatography (HIC) is a key analytical technique used to separate drug load variants of thiol linked ADCs and to calculate the average drug-to-antibody molar ratio (DAR)...
June 4, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28619413/visiting-trainees-in-global-settings-host-and-partner-perspectives-on-desirable-competencies
#2
William Cherniak, Emily Latham, Barbara Astle, Geoffrey Anguyo, Tessa Beaunoir, Joel Buenaventura, Matthew DeCamp, Karla Diaz, Quentin Eichbaum, Marius Hedimbi, Cat Myser, Charles Nwobu, Katherine Standish, Jessica Evert
BACKGROUND: Current competencies in global health education largely reflect perspectives from high-income countries (HICs). Consequently, there has been underrepresentation of the voices and perspectives of partners in low- and middle-income countries (LMICs) who supervise and mentor trainees engaged in short-term experiences in global health (STEGH). OBJECTIVE: The objective of this study was to better understand the competencies and learning objectives that are considered a priority from the perspective of partners in LMICs...
March 2017: Annals of Global Health
https://www.readbyqxmd.com/read/28619408/children-crossing-streets-the-cognitive-task-of-pedestrians-across-nations
#3
David C Schwebel
BACKGROUND: About 100,000 children die worldwide in pedestrian crashes, more than 90% of whom live in low- and middle-income countries (LMICs). However, most existing research on children's ability to cross the street is conducted in high-income countries (HICs). OBJECTIVE: The present study discusses 4 ways pedestrian behavior in LMICs differs from that in HICs, influencing both children's ability to cross streets safely and adult efforts to train children in pedestrian safety...
March 2017: Annals of Global Health
https://www.readbyqxmd.com/read/28617198/thinking-about-the-environment-and-theorising-change-how-could-life-history-strategy-theory-inform-mhealth-interventions-in-low-and-middle-income-countries
#4
Barak Morgan, Xanthe Hunt, Mark Tomlinson
BACKGROUND: There is a growing body of literature outlining the promise of mobile information and communication technologies to improve healthcare in resource-constrained contexts. METHODS: We reviewed the literature related to mobile information and communication technologies which aim to improve healthcare in resource-constrained contexts, in order to glean general observations regarding the state of mHealth in high-income countries (HIC) and low- and middle-income countries (LMIC)...
2017: Global Health Action
https://www.readbyqxmd.com/read/28612841/il-17-driven-intestinal-fibrosis-is-inhibited-by-itch-mediated-ubiquitination-of-hic-5
#5
J Paul, A K Singh, M Kathania, T L Elviche, M Zeng, V Basrur, A L Theiss, K Venuprasad
Intestinal fibrosis is a major complication in inflammatory bowel diseases, but the regulatory mechanism that inhibits fibrosis remains unclear. Here we demonstrate that Itch(-/-)myofibroblasts express increased amounts of profibrotic collagen type I and α-SMA in response to IL-17. Mechanistically, we demonstrate that Itch directly binds to HIC-5 and targets it for K63-linked ubiquitination to inhibit IL-17-driven intestinal fibrosis. Reconstitution of Itch(-/-) myofibroblasts with wild-type Itch but not the Itch-C830A mutant normalized the expression of profibrotic genes...
June 14, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28597232/factors-associated-to-medication-consumption-among-the-immigrant-population-residing-in-spain
#6
Díaz-Rodríguez Dania Rocío, Hernández-Barrera Valentín, Jiménez-Trujillo Isabel, Carrasco-Garrido Pilar
We aimed to determine the prevalence of medication use by the immigrant population residing in Spain, and to identify the factors associated with this consumption. Descriptive cross-sectional study was performed using secondary data retrieved from the 2012 Spanish National Health Survey (SNHS). Using logistic multivariate regression analysis, three models were generated: one for immigrants from high income countries (HIC), another for immigrants from low income countries (LIC), and a third one for the native population...
June 8, 2017: Journal of Immigrant and Minority Health
https://www.readbyqxmd.com/read/28595240/toll-like-receptor-7-is-overexpressed-in-the-bladder-of-hunner-type-interstitial-cystitis-and-its-activation-in-the-mouse-bladder-can-induce-cystitis-and-bladder-pain
#7
Koji Ichihara, Naoki Aizawa, Yoshiyuki Akiyama, Jun Kamei, Naoya Masumori, Karl-Erik Andersson, Yukio Homma, Yasuhiko Igawa
Toll-like receptor 7 (TLR7) is associated with the pathophysiology of systemic lupus erythematosus and Sjögren syndrome, well-known diseases accompanying interstitial cystitis (IC). We studied TLR7 expression in the bladder of patients with Hunner-type IC (HIC) and its functional roles in bladder inflammation and nociception using mice. Bladder biopsy specimens were obtained from patients with HIC. Specimens from the noncancerous portion of the bladder of patients with bladder cancer served as controls. The specimens were examined by immunohistochemistry and real-time polymerase chain reaction of TLR7...
May 6, 2017: Pain
https://www.readbyqxmd.com/read/28587113/the-therapeutic-targeting-of-hgf-c-met-signaling-in-hepatocellular-carcinoma-alternative-approaches
#8
REVIEW
Chi-Tan Hu, Jia-Ru Wu, Chuan-Chu Cheng, Wen-Sheng Wu
The poor prognosis of hepatocellular carcinoma (HCC), one of the most devastating cancers worldwide, is due to frequent recurrence and metastasis. Among the metastatic factors in the tumor microenvironment, hepatocyte growth factor (HGF) has been well known to play critical roles in tumor progression, including HCC. Therefore, c-Met is now regarded as the most promising therapeutic target for the treatment of HCC. However, there are still concerns about resistance and the side effects of using conventional inhibitors of c-Met, such as tyrosine kinase inhibitors...
May 26, 2017: Cancers
https://www.readbyqxmd.com/read/28584850/a-subset-of-extreme-human-immunodeficiency-virus-hiv-controllers-is-characterized-by-a-small-hiv-blood-reservoir-and-a-weak-t-cell-activation-level
#9
Etienne Canouï, Camille Lécuroux, Véronique Avettand-Fenoël, Marine Gousset, Christine Rouzioux, Asier Saez-Cirion, Laurence Meyer, Faroudy Boufassa, Olivier Lambotte, Nicolas Noël
BACKGROUND: Human immunodeficiency virus controllers (HICs) form a heterogeneous group of patients with regard to formal definitions, immunologic characteristics, and changes over time in viral load. PATIENTS AND METHODS: The HICs with undetectable viral load ([uHICs] ie, for whom a viral load had never been detected with routine assays; n = 52) were compared with 178 HICs with blips during the follow up (bHICs). Clinical characteristics, ultrasensitive HIV-ribonucleic acid (RNA) and HIV-deoxyribonucleic acid (DNA) loads, HIV1-Western blot profiles, and immune parameters were analyzed...
2017: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/28574165/synergistic-chemo-enzymatic-hydrolysis-of-poly-ethylene-terephthalate-from-textile-waste
#10
Felice Quartinello, Simona Vajnhandl, Julija Volmajer Valh, Thomas J Farmer, Bojana Vončina, Alexandra Lobnik, Enrique Herrero Acero, Alessandro Pellis, Georg M Guebitz
Due to the rising global environment protection awareness, recycling strategies that comply with the circular economy principles are needed. Polyesters are among the most used materials in the textile industry; therefore, achieving a complete poly(ethylene terephthalate) (PET) hydrolysis in an environmentally friendly way is a current challenge. In this work, a chemo-enzymatic treatment was developed to recover the PET building blocks, namely terephthalic acid (TA) and ethylene glycol. To monitor the monomer and oligomer content in solid samples, a Fourier-transformed Raman method was successfully developed...
June 2, 2017: Microbial Biotechnology
https://www.readbyqxmd.com/read/28554665/population-incidence-of-pedestrian-traffic-injury-in-high-income-countries-a-systematic-review
#11
REVIEW
Kate E Charters, Belinda J Gabbe, Biswadev Mitra
BACKGROUND: Road traffic injuries are the fifth leading cause of years of life lost, with pedestrians comprising 39% of all road deaths. International recognition of this public health issue has led to a reduction in road traffic deaths in many high-income countries. However data on non-motorised road users such as pedestrians is incomplete. Additionally, non-fatal injuries are poorly documented. The aim of this study was to identify the incidence of pedestrian traffic injury reported from high-income countries...
May 18, 2017: Injury
https://www.readbyqxmd.com/read/28549280/protocols-for-the-analytical-characterization-of-therapeutic-monoclonal-antibodies-i-non-denaturing-chromatographic-techniques
#12
Alexandre Goyon, Valentina D'Atri, Balazs Bobaly, Elsa Wagner-Rousset, Alain Beck, Szabolcs Fekete, Davy Guillarme
Size-, charge- and hydrophobicity-related variants of a biopharmaceutical product have to be deeply characterized for batch consistency and for the assessment of immunogenicity and safety effects. Size exclusion chromatography (SEC) and ion exchange chromatography (IEX) are considered as the gold standard for the analysis of high molecular weight species (HMWS) and charge-related variants, respectively. Hydrophobic interaction chromatography (HIC) has drawn renewed attention to monitor the small drug payload distribution in the cysteine-linked antibody-drug conjugates (ADC)...
May 11, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28514911/action-learning-across-the-decades
#13
Ken Eason
Purpose The purpose of this paper is to explore how action learning concepts were used in two healthcare projects undertaken many decades apart. The specific purpose in both cases was to examine how action learning can contribute to shared learning across key stakeholders in a complex socio-technical system. In each case study, action learning supported joint design programmes and the sharing of perspectives about the complex system under investigation. Design/methodology/approach Two action learning projects are described: first, the Hospital Internal Communications (HIC) project led by Reg Revans in the 1960s...
May 2, 2017: Leadership in Health Services
https://www.readbyqxmd.com/read/28513628/an-integrated-model-for-detecting-significant-chromatin-interactions-from-high-resolution-hi-c-data
#14
Mark Carty, Lee Zamparo, Merve Sahin, Alvaro González, Raphael Pelossof, Olivier Elemento, Christina S Leslie
Here we present HiC-DC, a principled method to estimate the statistical significance (P values) of chromatin interactions from Hi-C experiments. HiC-DC uses hurdle negative binomial regression account for systematic sources of variation in Hi-C read counts-for example, distance-dependent random polymer ligation and GC content and mappability bias-and model zero inflation and overdispersion. Applied to high-resolution Hi-C data in a lymphoblastoid cell line, HiC-DC detects significant interactions at the sub-topologically associating domain level, identifying potential structural and regulatory interactions supported by CTCF binding sites, DNase accessibility, and/or active histone marks...
May 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28504544/radial-ultrashort-te-imaging-removes-the-need-for-breath-holding-in-hepatic-iron-overload-quantification-by-r2-mri
#15
Aaryani Tipirneni-Sajja, Axel J Krafft, M Beth McCarville, Ralf B Loeffler, Ruitian Song, Jane S Hankins, Claudia M Hillenbrand
OBJECTIVE: The objective of this study is to evaluate radial free-breathing (FB) multiecho ultrashort TE (UTE) imaging as an alternative to Cartesian FB multiecho gradient-recalled echo (GRE) imaging for quantitative assessment of hepatic iron content (HIC) in sedated patients and subjects unable to perform breath-hold (BH) maneuvers. MATERIALS AND METHODS: FB multiecho GRE imaging and FB multiecho UTE imaging were conducted for 46 test group patients with iron overload who could not complete BH maneuvers (38 patients were sedated, and eight were not sedated) and 16 control patients who could complete BH maneuvers...
May 15, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28488758/engineered-humicola-insolens-cutinase-for-efficient-cellulose-acetate-deacetylation
#16
Abhijit N Shirke, Glenn L Butterfoss, Rakhi Saikia, Aditya Basu, Leonardo de Maria, Allan Svendsen, Richard A Gross
Cutinases comprise a family of esterases with broad hydrolytic activity for chain and pendant ester groups. This work aimed to identify and improve an efficient cutinase for cellulose acetate (CA) deacetylation. The development of a mild method for CA fiber surface deacetylation will result in improved surface hydrophilicity and reactivity while, when combined with cellulases, a route to the full recycling of CA to acetate and glucose. In this study, the comparative CA deacetylation activity of four homologous wild-type (wt) fungal cutinases from Aspergillus oryzae (AoC), Thiellavia terrestris (TtC), Fusarium solani (FsC), and Humicola insolens (HiC) was determined by analysis of CA deacetylation kinetics...
May 10, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/28487456/deriving-literature-based-benchmarks-for-surgical-complications-in-high-income-countries-a-protocol-for-a-systematic-review-and-meta-analysis
#17
Mary E Brindle, Derek J Roberts, Oluwatomilayo Daodu, Alex Bernard Haynes, Christy Cauley, Elijah Dixon, Claude La Flamme, Paul Bain, William Berry
INTRODUCTION: To improve surgical safety, health systems must identify preventable adverse outcomes and measure changes in these outcomes in response to quality improvement initiatives. This requires understanding of the scope and limitations of available population-level data. To derive literature-based summary estimates of benchmarks of care, we will systematically review and meta-analyse rates of postoperative complications associated with several common and/or high-risk operations performed in five high-income countries (HICs)...
May 9, 2017: BMJ Open
https://www.readbyqxmd.com/read/28485144/hydrophobic-interaction-chromatography-for-bottom-up-proteomics-analysis-of-single-proteins-and-protein-complexes
#18
Michal Rackiewicz, Ludger Große-Hovest, Andrew J Alpert, Mostafa Zarei, Jörn Dengjel
Hydrophobic interaction chromatography (HIC) is a robust standard analytical method to purify proteins while preserving their biological activity. It is widely used to study post-translational modifications of proteins and drug-protein interactions. In the current manuscript we employed HIC to separate proteins, followed by bottom-up LC-MS/MS experiments. We used this approach to fractionate antibody species followed by comprehensive peptide mapping as well as to study protein complexes in human cells. HIC-reversed-phase chromatography (RPC)-mass spectrometry (MS) is a powerful alternative to fractionate proteins for bottom-up proteomics experiments making use of their distinct hydrophobic properties...
May 11, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28465695/benefits-barriers-and-limitations-on-the-use-of-hospital-incident-command-system
#19
REVIEW
Shahin Shooshtari, Shahram Tofighi, Shirin Abbasi
Hospital Incident Command System (HICS) has been established with the mission of prevention, response, and recovery in hazards. Regarding the key role of hospitals in medical management of events, the present study is aimed at investigating benefits, barriers, and limitations of applying HICS in hospital. Employing a review study, articles related to the aforementioned subject published from 1995 to 2016 were extracted from accredited websites and databases such as PubMed, Google Scholar, Elsevier, and SID by searching keywords such as HICS, benefits, barriers, and limitations...
2017: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/28463561/discovery-of-novel-and-selective-adenosine-a2a-receptor-antagonists-for-treating-parkinson-s-disease-through-comparative-structure-based-virtual-screening
#20
Sheng Tian, Xu Wang, Linlang Li, Xiaohu Zhang, Youyong Li, Feng Zhu, Tingjun Hou, Xuechu Zhen
Among non-dopaminergic strategies for combating Parkinson's disease (PD), antagonism of the A2A adenosine receptor (AR) has emerged to show great potential. In this study, on the basis of two crystal structures of the A2A AR with the best capability to distinguish known antagonists from decoys, docking-based virtual screening (VS) was conducted to identify novel A2A AR antagonists. A total of 63 structurally diverse compounds identified by VS were submitted to experimental testing, and 11 of them exhibited substantial activity against the A2A AR (Ki < 10 μM), including two compounds with Ki below 1 μM (compound 43, 0...
May 15, 2017: Journal of Chemical Information and Modeling
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