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https://www.readbyqxmd.com/read/27916369/expression-of-connexin-26-and-connexin-43-is-reduced-in-hirschsprung-s-disease
#1
David Coyle, Brian Doyle, Justin M Murphy, Anne Marie O'Donnell, John Gillick, Prem Puri
BACKGROUND: Despite having an optimal pull-through operation, some children with Hirschsprung's disease (HSCR) continue to experience persistent bowel symptoms. Coordinated colonic electrical activity depends on intercellular communication between the enteric nerves, interstitial cells of Cajal (ICCs), smooth muscle cells, and fibroblast-like (platelet-derived growth factor receptor-alpha-positive) cells. Gap junctions are low-resistance channels composed of connexin (Cx) proteins which couple cells electrically and chemically...
November 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/27913547/new-treatment-approaches-to-von-willebrand-disease
#2
Michelle Lavin, James S O'Donnell
von Willebrand disease (VWD) is the commonest inherited bleeding disorder and results from either a quantitative or qualitative deficiency in the plasma glycoprotein von Willebrand factor (VWF). Recent large cohort studies have significantly enhanced our understanding of the molecular mechanisms involved in the pathogenesis of VWD. In contrast, however, there have been relatively few advances in the therapeutic options available for the treatment of bleeding in patients with VWD. Established treatment options include tranexamic acid, 1-deamino-8-d-arginine vasopressin (DDAVP), and plasma-derived VWF concentrates...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27912783/exploring-levers-and-barriers-to-accessing-primary-care-for-marginalised-groups-and-identifying-their-priorities-for-primary-care-provision-a-participatory-learning-and-action-research-study
#3
Patrick O'Donnell, Edel Tierney, Austin O'Carroll, Diane Nurse, Anne MacFarlane
BACKGROUND: The involvement of patients and the public in healthcare has grown significantly in recent decades and is documented in health policy documents internationally. Many benefits of involving these groups in primary care planning have been reported. However, these benefits are rarely felt by those considered marginalised in society and they are often excluded from participating in the process of planning primary care. It has been recommended to employ suitable approaches, such as co-operative and participatory initiatives, to enable marginalised groups to highlight their priorities for care...
December 3, 2016: International Journal for Equity in Health
https://www.readbyqxmd.com/read/27911814/distinct-cortical-and-striatal-actions-of-a-%C3%AE-arrestin-biased-dopamine-d2-receptor-ligand-reveal-unique-antipsychotic-like-properties
#4
Nikhil M Urs, Steven M Gee, Thomas F Pack, John D McCorvy, Tama Evron, Joshua C Snyder, Xiaobao Yang, Ramona M Rodriguiz, Emiliana Borrelli, William C Wetsel, Jian Jin, Bryan L Roth, Patricio O'Donnell, Marc G Caron
The current dopamine (DA) hypothesis of schizophrenia postulates striatal hyperdopaminergia and cortical hypodopaminergia. Although partial agonists at DA D2 receptors (D2Rs), like aripiprazole, were developed to simultaneously target both phenomena, they do not effectively improve cortical dysfunction. In this study, we investigate the potential for newly developed β-arrestin2 (βarr2)-biased D2R partial agonists to simultaneously target hyper- and hypodopaminergia. Using neuron-specific βarr2-KO mice, we show that the antipsychotic-like effects of a βarr2-biased D2R ligand are driven through both striatal antagonism and cortical agonism of D2R-βarr2 signaling...
December 1, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27905446/genomic-evolution-and-chemoresistance-in-germ-cell-tumours
#5
Amaro Taylor-Weiner, Travis Zack, Elizabeth O'Donnell, Jennifer L Guerriero, Brandon Bernard, Anita Reddy, G Celine Han, Saud AlDubayan, Ali Amin-Mansour, Steven E Schumacher, Kevin Litchfield, Clare Turnbull, Stacey Gabriel, Rameen Beroukhim, Gad Getz, Scott L Carter, Michelle S Hirsch, Anthony Letai, Christopher Sweeney, Eliezer M Van Allen
Germ-cell tumours (GCTs) are derived from germ cells and occur most frequently in the testes. GCTs are histologically heterogeneous and distinctly curable with chemotherapy. Gains of chromosome arm 12p and aneuploidy are nearly universal in GCTs, but specific somatic genomic features driving tumour initiation, chemosensitivity and progression are incompletely characterized. Here, using clinical whole-exome and transcriptome sequencing of precursor, primary (testicular and mediastinal) and chemoresistant metastatic human GCTs, we show that the primary somatic feature of GCTs is highly recurrent chromosome arm level amplifications and reciprocal deletions (reciprocal loss of heterozygosity), variations that are significantly enriched in GCTs compared to 19 other cancer types...
November 30, 2016: Nature
https://www.readbyqxmd.com/read/27903672/-exertional-dyspnoea-in-copd-the-clinical-utility-of-cardiopulmonary-exercise-testing-denis-e-o-donnell-amany-f-elbehairy-azmy-faisal-katherine-a-webb-j-alberto-neder-and-donald-a-mahler-eur-respir-rev-2016-25-333-347
#6
(no author information available yet)
No abstract text is available yet for this article.
December 2016: European Respiratory Review: An Official Journal of the European Respiratory Society
https://www.readbyqxmd.com/read/27894560/analysis-of-temperature-variability-in-medication-storage-compartments-in-emergency-transport-helicopters
#7
Margaret A O'Donnell, Justin Whitfield
The purpose of this study was to determine whether the temperature in medication storage compartments in air medical helicopters was within United States Pharmacopeia (USP)-defined limits for controlled room temperature. This was a prospective study using data obtained from a continuous temperature monitoring device. A total of 4 monitors were placed within 2 medication storage locations in 2 identical helicopters. The data collection period lasted 2 weeks during the summer and winter seasons. Data retrieved from monitors were compared against USP parameters for proper medication storage...
November 2016: Air Medical Journal
https://www.readbyqxmd.com/read/27889361/adult-bronchiectasis-patients-a-first-look-at-the-united-states-bronchiectasis-research-registry
#8
Timothy R Aksamit, Anne E O'Donnell, Alan Barker, Kenneth N Olivier, Kevin L Winthrop, M Leigh Anne Daniels, Margaret Johnson, Edward Eden, David Griffith, Michael Knowles, Mark Metersky, Matthias Salathe, Byron Thomashow, Gregory Tino, Gerard Turino, Betsy Carretta, Charles L Daley
OBJECTIVE: We sought to describe the characteristics of adult bronchiectasis patients enrolled in the United States Bronchiectasis Research Registry (BRR). METHODS: The BRR is a database of non-cystic fibrosis bronchiectasis (NCFB) patients enrolled at 13 sites within the United States. Baseline demographic, spirometric, imaging, microbiologic, and therapeutic data were entered into a central web-based database. Patients were subsequently analyzed by the presence NTM...
November 23, 2016: Chest
https://www.readbyqxmd.com/read/27887577/impact-of-financial-incentives-on-alcohol-intervention-delivery-in-primary-care-a-mixed-methods-study
#9
Amy O'Donnell, Catherine Haighton, David Chappel, Colin Shevills, Eileen Kaner
BACKGROUND: Local and national financial incentives were introduced in England between 2008 and 2015 to encourage screening and brief alcohol intervention delivery in primary care. We used routine Read Code data and interviews with General Practitioners (GPs) to assess their impact. METHODS: A sequential explanatory mixed-methods study was conducted in 16 general practices representing 106,700 patients and 99 GPs across two areas in Northern England. Data were extracted on screening and brief alcohol intervention delivery for 2010-11 and rates were calculated by practice incentive status...
November 25, 2016: BMC Family Practice
https://www.readbyqxmd.com/read/27886350/design-of-artificial-red-blood-cells-using-polymeric-hydrogel-microcapsules-hydrogel-stability-improvement-and-polymer-selection
#10
Wujie Zhang, Matthew J Bissen, Emily S Savela, Joshua N Clausen, Samantha J Fredricks, Xiaoru Guo, Zachary R Paquin, Ryan P Dohn, Ian J Pavelich, Alec L Polovchak, Michael J Wedemeyer, Brock E Shilling, Emily N Dufner, Anna C O'Donnell, Gerardo Rubio, Logan R Readnour, Tyler F Brown, Jung C Lee, Matey G Kaltchev, Junhong Chen, Charles S Tritt
PURPOSE: To improve the stability of pectin-oligochitosan hydrogel microcapsules under physiological conditions. METHODS: Two different approaches were examined: change of the cross-linker length and treatment of the hydrogel microcapsules with 150 Mm CaCl2. Replacement of pectin with alginate was also studied. RESULTS AND CONCLUSIONS: It was observed that the molecular weight of the cross-linker oligochiotsan had no significant improvement on microcapsule stability...
November 16, 2016: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/27885665/can-cephalometrics-discriminate-between-the-sexes-in-a-diverse-juvenile-sample
#11
Alexis O'Donnell, Shamsi Daneshvari Berry, Heather J H Edgar
A critical component of the biological profile is sex estimation. Methods commonly used for sex estimation in adults do not work well for juveniles. Population-specific studies have used cephalometrics to estimate juvenile sex with 80-90% accuracy. Our study attempts to estimate sex in individuals less than 18 years of age using a sample of 1618 lateral cephalograms incorporating all three Angle Class occlusions as well as population diversity. For the sample as a whole, 10 skeletal cephalometrics were found to have significant differences between the sexes...
November 25, 2016: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/27882716/toward-a-sociology-of-the-reconciliation-of-conflicting-desires
#12
Susan O'Donnell, David Perley
Desire-based research provides people and communities the opportunity to share their dreams and hopes for a better future. However, conflicting desires are difficult to reconcile. We suggest that sociological research to understand conflicting desires is required to support reconciliation work by Indigenous and non-Indigenous people in Canada. Our contribution begins by identifying much of current and past sociological research about Indigenous people and communities as damaged-centered, that is, identifying problems and obstacles in the hope that the knowledge will lead to change...
November 2016: Canadian Review of Sociology, Revue Canadienne de Sociologie
https://www.readbyqxmd.com/read/27882198/design-synthesis-and-cytotoxic-evaluation-of-novel-tubulysin-analogues-as-adc-payloads
#13
Carolyn A Leverett, Sai Chetan K Sukuru, Beth C Vetelino, Sylvia Musto, Kevin Parris, Jayvardhan Pandit, Frank Loganzo, Alison H Varghese, Guoyun Bai, Bin Liu, Dingguo Liu, Sarah Hudson, Venkata Ramana Doppalapudi, Joseph Stock, Christopher J O'Donnell, Chakrapani Subramanyam
The tubulysin class of natural products has attracted much attention from the medicinal chemistry community due to its potent cytotoxicity against a wide range of human cancer cell lines, including significant activity in multidrug-resistant carcinoma models. As a result of their potency, the tubulysins have become an important tool for use in targeted therapy, being widely pursued as payloads in the development of novel small molecule drug conjugates (SMDCs) and antibody-drug conjugates (ADCs). A structure-based and parallel medicinal chemistry approach was applied to the synthesis of novel tubulysin analogues...
November 10, 2016: ACS Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/27882194/optimization-of-tubulysin-antibody-drug-conjugates-a-case-study-in-addressing-adc-metabolism
#14
L Nathan Tumey, Carolyn A Leverett, Beth Vetelino, Fengping Li, Brian Rago, Xiaogang Han, Frank Loganzo, Sylvia Musto, Guoyun Bai, Sai Chetan K Sukuru, Edmund I Graziani, Sujiet Puthenveetil, Jeffrey Casavant, Anokha Ratnayake, Kimberly Marquette, Sarah Hudson, Venkata Ramana Doppalapudi, Joseph Stock, Lioudmila Tchistiakova, Andrew J Bessire, Tracey Clark, Judy Lucas, Christine Hosselet, Christopher J O'Donnell, Chakrapani Subramanyam
As part of our efforts to develop new classes of tubulin inhibitor payloads for antibody-drug conjugate (ADC) programs, we developed a tubulysin ADC that demonstrated excellent in vitro activity but suffered from rapid metabolism of a critical acetate ester. A two-pronged strategy was employed to address this metabolism. First, the hydrolytically labile ester was replaced by a carbamate functional group resulting in a more stable ADC that retained potency in cellular assays. Second, site-specific conjugation was employed in order to design ADCs with reduced metabolic liabilities...
November 10, 2016: ACS Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/27872330/psychosocial-recovery-following-community-disasters-an-international-collaboration
#15
EDITORIAL
David Forbes, Meaghan O'Donnell, Richard A Bryant
No abstract text is available yet for this article.
November 20, 2016: Australian and New Zealand Journal of Psychiatry
https://www.readbyqxmd.com/read/27872249/job-dekker-hitting-the-scientific-hi-cs
#16
Marie Anne O'Donnell
No abstract text is available yet for this article.
November 21, 2016: Journal of Cell Biology
https://www.readbyqxmd.com/read/27872105/multiethnic-exome-wide-association-study-of-subclinical-atherosclerosis
#17
Pradeep Natarajan, Joshua C Bis, Lawrence F Bielak, Amanda J Cox, Marcus Dörr, Mary F Feitosa, Nora Franceschini, Xiuqing Guo, Shih-Jen Hwang, Aaron Isaacs, Min A Jhun, Maryam Kavousi, Ruifang Li-Gao, Leo-Pekka Lyytikäinen, Riccardo E Marioni, Ulf Schminke, Nathan O Stitziel, Hayato Tada, Jessica van Setten, Albert V Smith, Dina Vojinovic, Lisa R Yanek, Jie Yao, Laura M Yerges-Armstrong, Najaf Amin, Usman Baber, Ingrid B Borecki, J Jeffrey Carr, Yii-Der Ida Chen, L Adrienne Cupples, Pim A de Jong, Harry de Koning, Bob D de Vos, Ayse Demirkan, Valentin Fuster, Oscar H Franco, Mark O Goodarzi, Tamara B Harris, Susan R Heckbert, Gerardo Heiss, Udo Hoffmann, Albert Hofman, Ivana Išgum, J Wouter Jukema, Mika Kähönen, Sharon L R Kardia, Brian G Kral, Lenore J Launer, Joseph Massaro, Roxana Mehran, Braxton D Mitchell, Thomas H Mosley, Renée de Mutsert, Anne B Newman, Khanh-Dung Nguyen, Kari E North, Jeffrey R O'Connell, Matthijs Oudkerk, James S Pankow, Gina M Peloso, Wendy Post, Michael A Province, Laura M Raffield, Olli T Raitakari, Dermot F Reilly, Fernando Rivadeneira, Frits Rosendaal, Samantha Sartori, Kent D Taylor, Alexander Teumer, Stella Trompet, Stephen T Turner, André G Uitterlinden, Dhananjay Vaidya, Aad van der Lugt, Uwe Völker, Joanna M Wardlaw, Christina L Wassel, Stefan Weiss, Mary K Wojczynski, Diane M Becker, Lewis C Becker, Eric Boerwinkle, Donald W Bowden, Ian J Deary, Abbas Dehghan, Stephan B Felix, Vilmundur Gudnason, Terho Lehtimäki, Rasika Mathias, Dennis O Mook-Kanamori, Bruce M Psaty, Daniel J Rader, Jerome I Rotter, James G Wilson, Cornelia M van Duijn, Henry Völzke, Sekar Kathiresan, Patricia A Peyser, Christopher J O'Donnell
BACKGROUND: -The burden of subclinical atherosclerosis in asymptomatic individuals is heritable and associated with elevated risk of developing clinical coronary heart disease (CHD). We sought to identify genetic variants in protein-coding regions associated with subclinical atherosclerosis and the risk of subsequent CHD. METHODS AND RESULTS: -We studied a total of 25,109 European ancestry and African-American participants with coronary artery calcification (CAC) measured by cardiac computed tomography and 52,869 with common carotid intima media thickness (CIMT) measured by ultrasonography within the Cohorts for Heart and Aging Research in Genomic Epidemiology (CHARGE) Consortium...
November 21, 2016: Circulation. Cardiovascular Genetics
https://www.readbyqxmd.com/read/27871536/novel-methods-of-local-anesthetic-delivery-in-the-perioperative-and-postoperative-setting-potential-for-fibrin-hydrogel-delivery
#18
REVIEW
Laura Kearney, Derek Whelan, Brian D O'Donnell, Anthony J P Clover
The benefits of high-quality postoperative analgesia are well documented and include earlier mobilization, fewer respiratory and cardiovascular complications, and shorter hospital stay. Local anesthesia-based acute pain regimens are at worst equal to and at best superior to opiate-based regimens from the perspective of analgesia. A multimodal approach limiting opioids by combining with local anesthetics has additional beneficial effect on outcomes such as nausea and vomiting, pruritus, gastrointestinal function, respiratory complications, and neutrophil function...
December 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27870612/the-population-tracking-model-a-simple-scalable-statistical-model-for-neural-population-data
#19
Cian O'Donnell, J Tiago Gonçalves, Nick Whiteley, Carlos Portera-Cailliau, Terrence J Sejnowski
Our understanding of neural population coding has been limited by a lack of analysis methods to characterize spiking data from large populations. The biggest challenge comes from the fact that the number of possible network activity patterns scales exponentially with the number of neurons recorded ([Formula: see text]). Here we introduce a new statistical method for characterizing neural population activity that requires semi-independent fitting of only as many parameters as the square of the number of neurons, requiring drastically smaller data sets and minimal computation time...
November 21, 2016: Neural Computation
https://www.readbyqxmd.com/read/27866475/an-increase-in-healthcare-associated-clostridium-difficile-infection-associated-with-use-of-a-defective-peracetic-acid-based-surface-disinfectant
#20
Jennifer L Cadnum, Annette L Jencson, Marguerite C O'Donnell, Elizabeth R Flannery, Michelle M Nerandzic, Curtis J Donskey
BACKGROUND We investigated an increase in the incidence of healthcare-associated Clostridium difficile infection (CDI) that occurred following a change from a bleach disinfectant to a peracetic acid-based disinfectant. OBJECTIVE To evaluate the efficacy of the peracetic acid-based disinfectant. DESIGN Laboratory-based product evaluation. METHODS The commercial peracetic acid-based product is activated on site by mixing a small volume of concentrated hydrogen peroxide and peracetic acid present in a "SmartCap" reservoir with the remaining contents of the container...
November 21, 2016: Infection Control and Hospital Epidemiology
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