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https://www.readbyqxmd.com/read/28639505/rationale-and-design-of-the-multiethnic-pharmacogenomics-in-childhood-asthma-consortium
#1
Niloufar Farzan, Susanne J Vijverberg, Anand K Andiappan, Lambang Arianto, Vojko Berce, Natalia Blanca-López, Hans Bisgaard, Klaus Bønnelykke, Esteban G Burchard, Paloma Campo, Glorisa Canino, Bruce Carleton, Juan C Celedón, Fook Tim Chew, Wen Chin Chiang, Michelle M Cloutier, Denis Daley, Herman T Den Dekker, Nicole F Dijk, Liesbeth Duijts, Carlos Flores, Erick Forno, Daniel B Hawcutt, Natalia Hernandez-Pacheco, Johan C de Jongste, Michael Kabesch, Gerard H Koppelman, Vangelis G Manolopoulos, Erik Melén, Somnath Mukhopadhyay, Sara Nilsson, Colin N Palmer, Maria Pino-Yanes, Munir Pirmohamed, Uros Potočnki, Jan A Raaijmakers, Katja Repnik, Maximilian Schieck, Yang Yie Sio, Rosalind L Smyth, Csaba Szalai, Kelan G Tantisira, Steve Turner, Marc P van der Schee, Katia M Verhamme, Anke H Maitland-van der Zee
AIM: International collaboration is needed to enable large-scale pharmacogenomics studies in childhood asthma. Here, we describe the design of the Pharmacogenomics in Childhood Asthma (PiCA) consortium. MATERIALS & METHODS: Investigators of each study participating in PiCA provided data on the study characteristics by answering an online questionnaire. RESULTS: A total of 21 studies, including 14,227 children/young persons (58% male), from 12 different countries are currently enrolled in the PiCA consortium...
June 22, 2017: Pharmacogenomics
https://www.readbyqxmd.com/read/28634004/minyoo-matata-the-vicious-worm-a-taenia-solium-computer-based-health-education-tool-in-swahili
#2
Chiara Trevisan, Eric M Fèvre, Maurice Owiny, Isaac Ngere, Maria Vang Johansen
Lack of knowledge is one of the main risk factors for the spread of the zoonotic parasite Taenia solium. The computer-based health-education tool 'The Vicious Worm' was developed to create awareness and provide evidence-based health education as a specific measure in control strategies. To increase the reach of the tool, a new version in Swahili was developed and can now be downloaded for free from http://theviciousworm.sites.ku.dk.
June 17, 2017: Trends in Parasitology
https://www.readbyqxmd.com/read/28628031/kinase-independent-functions-of-ripk1-regulate-hepatocyte-survival-and-liver-carcinogenesis
#3
Trieu-My Van, Apostolos Polykratis, Beate Katharina Straub, Vangelis Kondylis, Nikoletta Papadopoulou, Manolis Pasparakis
The mechanisms that regulate cell death and inflammation play an important role in liver disease and cancer. Receptor-interacting protein kinase 1 (RIPK1) induces apoptosis and necroptosis via kinase-dependent mechanisms and exhibits kinase-independent prosurvival and proinflammatory functions. Here, we have used genetic mouse models to study the role of RIPK1 in liver homeostasis, injury, and cancer. While ablating either RIPK1 or RelA in liver parenchymal cells (LPCs) did not cause spontaneous liver pathology, mice with combined deficiency of RIPK1 and RelA in LPCs showed increased hepatocyte apoptosis and developed spontaneous chronic liver disease and cancer that were independent of TNF receptor 1 (TNFR1) signaling...
June 19, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28600478/clinical-implications-of-monitoring-circulating-tumor-dna-in-patients-with-colorectal-cancer
#4
Lone V Schøler, Thomas Reinert, Mai-Britt W Ørntoft, Christine Gaasdal Kassentoft, Sigrid S Árnadóttir, Søren Vang, Iver Nordentoft, Michael Knudsen, Philippe Lamy, Ditte Andreasen, Frank V Mortensen, Anders Riegels Knudsen, Katrine Stribolt, Kim Sivesgaard, Peter Mouritzen, Hans Jørgen Nielsen, Søren Laurberg, Torben F Ørntoft, Claus L Andersen
We investigated if detection of circulating tumor DNA (ctDNA) after resection of colorectal cancer (CRC) identifies the patients with the highest risk of relapse, and furthermore, whether longitudinal ctDNA analysis allows early detection of relapse and informs about response to intervention.<br /><br />Experimental Design: In this longitudinal cohort study we used massively parallel sequencing to identify somatic mutations and used these as ctDNA markers to detect minimal residual disease and to monitor changes in tumor burden during a three year follow-up period...
June 9, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28593353/diabetic-ketoacidosis-and-diabetes-associated-with-antipsychotic-exposure-among-a-previously-diabetes-naive-population-with-schizophrenia-a-nationwide-nested-case-control-study
#5
Christoffer Polcwiartek, Kristian Kragholm, Christopher Rohde, Nasseh Hashemi, Torkel Vang, Jimmi Nielsen
AIMS/HYPOTHESIS: Diabetic ketoacidosis (DKA) is a potentially fatal metabolic emergency of both type 1 and type 2 diabetes. Although there is a reduced risk of type 1 diabetes in schizophrenia, the incidence of DKA is tenfold higher than that of the general population. Thus, we aimed to investigate associations between exposure to antipsychotic medication (within 3 months prior to event) and DKA, type 1 diabetes and type 2 diabetes. We also reported related, clinically relevant outcomes...
June 7, 2017: Diabetologia
https://www.readbyqxmd.com/read/28578993/a-statistical-view-of-protein-chemical-synthesis-using-ncl-and-extended-methodologies
#6
REVIEW
Vangelis Agouridas, Ouafâa El Mahdi, Marine Cargoët, Oleg Melnyk
Native chemical ligation and extended methodologies are the most popular chemoselective reactions for protein chemical synthesis. Their combination with desulfurization techniques can give access to small or challenging proteins that are exploited in a large variety of research areas. In this report, we have conducted a statistical review of their use for protein chemical synthesis in order to provide a flavor of the recent trends and identify the most popular chemical tools used by protein chemists. To this end, a protein chemical synthesis (PCS) database (http://pcs-db...
May 24, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28577458/the-hispanic-mortality-paradox-revisited-meta-analysis-and-meta-regression-of-life-course-differentials-in-latin-american-and-caribbean-immigrants-mortality
#7
Eran Shor, David Roelfs, Zoua M Vang
The literature on immigrant health has repeatedly reported the paradoxical finding, where immigrants from Latin American countries to OECD countries appear to enjoy better health and greater longevity, compared with the local population in the host country. However, no previous meta-analysis has examined this effect focusing specifically on immigrants from Latin America (rather than Hispanic ethnicity) and we still do not know enough about the factors that may moderate the relationship between immigration and mortality...
May 26, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28566748/a-pathway-for-protective-quenching-in-antenna-proteins-of-photosystem-ii
#8
Sotiris Papadatos, Antreas C Charalambous, Vangelis Daskalakis
Photosynthesis is common in nature, converting sunlight energy into proton motive force and reducing power. The increased spectral range absorption of light exerted by pigments (i.e. chlorophylls, Chls) within Light Harvesting Complexes (LHCs) proves an important advantage under low light conditions. However, in the exposure to excess light, oxidative damages and ultimately cell death can occur. A down-regulatory mechanism, thus, has been evolved (non-photochemical quenching, NPQ). The mechanistic details of its major component (qE) are missing at the atomic scale...
May 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28561241/in-vitro-controlled-release-from-solid-pharmaceutical-formulations-of-two-new-adamantane-aminoethers-with-antitubercular-activity-i
#9
Marilena Vlachou, Angeliki Siamidi, Evanthia Diamantidi, Alexandra Iliopoulou, Ioannis Papanastasiou, V Ioannidou, Violeta Kourbeli, Angeliki-Sofia Foscolos, Anthony Vocat, Stewart T Cole, Vangelis Karalis, Tahsin Kellici, Thomas Mavromoustakos
The aim of the present investigation was to develop matrix tablet formulations for the in vitro controlled release of 2 new tuberculocidal adamantane aminoethers (compounds I and II), congeneric to the adamantane derivative SQ109, which is in final clinical trials, using carefully selected excipients, such as polyvinylpyrrolidone, sodium alginate and lactose. The tablets were prepared using the direct compression method and dissolution experiments were conducted using the US Pharmacopoeia type II apparatus (paddle method) in gastric and intestinal fluids...
May 30, 2017: Drug Research
https://www.readbyqxmd.com/read/28531100/functional-mitochondria-are-important-for-the-effect-of-resveratrol
#10
Anne L Widlund, Kaushal Baral, Louise T Dalgaard, Ole Vang
Resveratrol (Resv) is a polyphenol reported to modulate mitochondrial activity. The aim was to use HeLa and 143B cells to characterize the action of Resv on mitochondrial activity, cell size and proliferation using wild type (WT) and Rho 0 cells deficient in mitochondrial DNA. In both HeLa WT and Rho 0 cells, the oxygen consumption rate (OCR) was increased at 20 µM Resv after 24 h, whereas only a non-significant increase of OCR was observed in 143B WT cells. Resv decreased cell number concentration-dependently in both WT and Rho 0 cell types...
May 20, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28521373/paediatric-medicines-regulatory-and-scientific-issues
#11
Chrysa Daousani, Vangelis D Karalis
In the past, dosage regimens authorized for adults were extrapolated to children relying mainly on empirical dosage adjustments. However, children are not small adults, but a distinct and heterogeneous group in terms of physiology, disease occurrence, pharmacokinetics, pharmacodynamics and also psychological, cognitive, and behavioral aspects. Even though it would be helpful to know the physiological changes and the special drug treatment needs in children, this task could not be performed due to ethical reasons...
May 18, 2017: Drug Research
https://www.readbyqxmd.com/read/28494874/molecular-subtype-specific-biomarkers-improve-prediction-of-prognosis-in-colorectal-cancer
#12
Jesper Bertram Bramsen, Mads Heilskov Rasmussen, Halit Ongen, Trine Block Mattesen, Mai-Britt Worm Ørntoft, Sigrid Salling Árnadóttir, Juan Sandoval, Teresa Laguna, Søren Vang, Bodil Øster, Philippe Lamy, Mogens Rørbæk Madsen, Søren Laurberg, Manel Esteller, Emmanouil Theophilos Dermitzakis, Torben Falck Ørntoft, Claus Lindbjerg Andersen
Colorectal cancer (CRC) is characterized by major inter-tumor diversity that complicates the prediction of disease and treatment outcomes. Recent efforts help resolve this by sub-classification of CRC into natural molecular subtypes; however, this strategy is not yet able to provide clinicians with improved tools for decision making. We here present an extended framework for CRC stratification that specifically aims to improve patient prognostication. Using transcriptional profiles from 1,100 CRCs, including >300 previously unpublished samples, we identify cancer cell and tumor archetypes and suggest the tumor microenvironment as a major prognostic determinant that can be influenced by the microbiome...
May 9, 2017: Cell Reports
https://www.readbyqxmd.com/read/28462531/the-interplay-of-ikk-nf-%C3%AE%C2%BAb-and-ripk1-signaling-in-the-regulation-of-cell-death-tissue-homeostasis-and-inflammation
#13
REVIEW
Vangelis Kondylis, Snehlata Kumari, Katerina Vlantis, Manolis Pasparakis
Regulated cell death pathways have important functions in host defense and tissue homeostasis. Studies in genetic mouse models provided evidence that cell death could cause inflammation in different tissues. Inhibition of RIPK3-MLKL-dependent necroptosis by FADD and caspase-8 was identified as a key mechanism preventing inflammation in epithelial barriers. Moreover, the interplay between IKK/NF-κB and RIPK1 signaling was recognized as a critical determinant of tissue homeostasis and inflammation. NEMO was shown to regulate RIPK1 kinase activity-mediated apoptosis by NF-κB-dependent and -independent functions, which are critical for averting chronic tissue injury and inflammation in the intestine and the liver...
May 2017: Immunological Reviews
https://www.readbyqxmd.com/read/28444127/hla-class-i-binding-prediction-via-convolutional-neural-networks
#14
Yeeleng S Vang, Xiaohui Xie
Motivation: Many biological processes are governed by protein-ligand interactions. One such example is the recognition of self and nonself cells by the immune system. This immune response process is regulated by the major histocompatibility complex (MHC) protein which is encoded by the human leukocyte antigen (HLA) complex. Understanding the binding potential between MHC and peptides can lead to the design of more potent, peptide-based vaccines and immunotherapies for infectious autoimmune diseases...
April 21, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28441532/pcp-and-sax-3-robo-pathways-cooperate-to-regulate-convergent-extension-based-nerve-cord-assembly-in-c-%C3%A2-elegans
#15
Pavak K Shah, Matthew R Tanner, Ismar Kovacevic, Aysha Rankin, Teagan E Marshall, Nathaniel Noblett, Nhan Nguyen Tran, Tony Roenspies, Jeffrey Hung, Zheqian Chen, Cristina Slatculescu, Theodore J Perkins, Zhirong Bao, Antonio Colavita
Formation and resolution of multicellular rosettes can drive convergent extension (CE) type cell rearrangements during tissue morphogenesis. Rosette dynamics are regulated by both planar cell polarity (PCP)-dependent and -independent pathways. Here we show that CE is involved in ventral nerve cord (VNC) assembly in Caenorhabditis elegans. We show that a VANG-1/Van Gogh and PRKL-1/Prickle containing PCP pathway and a Slit-independent SAX-3/Robo pathway cooperate to regulate, via rosette intermediaries, the intercalation of post-mitotic neuronal cell bodies during VNC formation...
April 24, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28428043/effects-of-bone-marrow-on-the-microenvironment-of-the-human-pancreatic-islet-a-protein-profile-approach
#16
Joseph W Kim, Souriya Vang, John Zq Luo, William C Newton, Luguang Luo
Stem cells are a new therapeutic modality that may support the viability and function of human organs and tissue. Our previous studies have revealed that human allogeneic bone marrow (BM) sustains pancreatic β cell function and survival. This paper examines whether BM creates a microenvironment that supports human pancreatic islets in vitro by evaluating 107 proteins in culture media from BM, islet, and islet/bone marrow (IB) with mass spectrometry. Proteins were considered up- or down-regulated if p-values < 0...
April 17, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28388364/piezo2-expression-in-mechanosensitive-dental-primary-afferent-neurons
#17
J Won, H Vang, P R Lee, Y H Kim, H W Kim, Y Kang, S B Oh
Mechanosensitive ion channels have been suggested to be expressed in dental primary afferent (DPA) neurons to transduce the movement of dentinal fluid since the proposal of hydrodynamic theory. Piezo2, a mechanosensitive, rapidly inactivating (RI) ion channel, has been recently identified in dorsal root ganglion (DRG) neurons to mediate tactile transduction. Here, we examined the expression of Piezo2 in DPA neurons by in situ hybridization, single-cell reverse transcriptase polymerase chain reaction, and whole-cell patch-clamp recordings...
April 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28384160/a-wnt-planar-polarity-pathway-instructs-neurite-branching-by-restricting-f-actin-assembly-through-endosomal-signaling
#18
Chun-Hao Chen, Chun-Wei He, Chien-Po Liao, Chun-Liang Pan
Spatial arrangement of neurite branching is instructed by both attractive and repulsive cues. Here we show that in C. elegans, the Wnt family of secreted glycoproteins specify neurite branching sites in the PLM mechanosensory neurons. Wnts function through MIG-1/Frizzled and the planar cell polarity protein (PCP) VANG-1/Strabismus/Vangl2 to restrict the formation of F-actin patches, which mark branching sites in nascent neurites. We find that VANG-1 promotes Wnt signaling by facilitating Frizzled endocytosis and genetically acts in a common pathway with arr-1/β-arrestin, whose mutation results in defective PLM branching and F-actin patterns similar to those in the Wnt, mig-1 or vang-1 mutants...
April 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28374975/enrichment-of-genetic-variants-in-the-glucocorticoid-receptor-signalling-pathway-in-autoimmune-hepatitis-with-failure-of-standard-treatment
#19
Peter Lykke Eriksen, Martin Kreutzfeldt, Henning Grønbaek, Kasper Thorsen, Søren Vang, Niels Jessen, Hendrik Vilstrup
The standard treatment for autoimmune hepatitis (AIH) is predniso(lo)ne for remission induction, tapered and followed by azathioprine, which effectively controls the disease in the majority of patients. However, some patients prove to be unresponsive or non-tolerant and require alternative immunosuppressive regimens for disease control. We aimed to investigate whether these AIH patients who experience failure of standard treatment have a genomic basis for their problem in the form of pharmacogenetic variants...
April 4, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28374898/disease-spectrum-and-management-of-children-admitted-with-acute-respiratory-infection-in-viet-nam
#20
T K P Nguyen, D V Nguyen, T N H Truong, M D Tran, S M Graham, B J Marais
OBJECTIVE: To assess the acute respiratory infection (ARI) disease spectrum, duration of hospitalisation and outcome in children hospitalised with an ARI in Viet Nam. METHODS: We conducted a retrospective descriptive study of ARI admissions to primary (Hoa Vang District Hospital), secondary (Da Nang Hospital for Women and Children) and tertiary (National Hospital of Paediatrics in Ha Noi) level hospitals in Viet Nam over 12 months (01/09/2015 to 31/08/2016). RESULTS: Acute respiratory infections accounted for 27...
April 4, 2017: Tropical Medicine & International Health: TM & IH
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