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James Cooper

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https://www.readbyqxmd.com/read/28213356/otx2-activity-at-distal-regulatory-elements-shapes-the-chromatin-landscape-of-group-3-medulloblastoma
#1
Gaylor Boulay, Mary E Awad, Nicolo Riggi, Tenley C Archer, Sowmya Iyer, Wannaporn E Boonseng, Nikki E Rossetti, Beverly Naigles, Shruthi Rengarajan, Angela Volorio, James C Kim, Jill P Mesirov, Pablo Tamayo, Scott L Pomeroy, Martin J Aryee, Miguel N Rivera
Medulloblastoma is the most frequent malignant pediatric brain tumor and is divided into at least four subgroups known as WNT, SHH, Group 3, and Group 4. Here, we characterized gene regulation mechanisms in the most aggressive subtype, Group 3 tumors, through genome-wide chromatin and expression profiling. Our results show that most active distal sites in these tumors are occupied by the transcription factor OTX2. Highly active OTX2-bound enhancers are often arranged as clusters of adjacent peaks and are also bound by the transcription factor NEUROD1...
February 17, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28199477/use-of-unsolicited-patient-observations-to-identify-surgeons-with-increased-risk-for-postoperative-complications
#2
William O Cooper, Oscar Guillamondegui, O Joe Hines, C Scott Hultman, Rachel R Kelz, Perry Shen, David A Spain, John F Sweeney, Ilene N Moore, Joseph Hopkins, Ira R Horowitz, Russell M Howerton, J Wayne Meredith, Nathan O Spell, Patricia Sullivan, Henry J Domenico, James W Pichert, Thomas F Catron, Lynn E Webb, Roger R Dmochowski, Jan Karrass, Gerald B Hickson
Importance: Unsolicited patient observations are associated with risk of medical malpractice claims. Because lawsuits may be triggered by an unexpected adverse outcome superimposed on a strained patient-physician relationship, a question remains as to whether behaviors that generate patient dissatisfaction might also contribute to the genesis of adverse outcomes themselves. Objective: To examine whether patients of surgeons with a history of higher numbers of unsolicited patient observations are at greater risk for postoperative complications than patients whose surgeons generate fewer such unsolicited patient observations...
February 15, 2017: JAMA Surgery
https://www.readbyqxmd.com/read/28185945/age-related-volumetric-change-of-limbic-structures-and-subclinical-anxious-depressed-symptomatology-in-typically-developing-children-and-adolescents
#3
Matthew D Albaugh, Tuong-Vi Nguyen, Simon Ducharme, D Louis Collins, Kelly N Botteron, Nicholas D'Alberto, Alan C Evans, Sherif Karama, James J Hudziak
OBJECTIVE: To investigate the extent to which subclinical variation in anxious/depressed psychopathology is associated with volume and age-related volumetric change of limbic structures in a longitudinal sample of healthy youths. METHODS: Linear mixed-effects models were used to analyze longitudinal behavioral and neuroimaging data (up to 3 data points per subject, collected at 2 year-intervals) in 371 typically developing youths, from 4 to 18 years of age (196 females; 723 MRIs)...
February 7, 2017: Biological Psychology
https://www.readbyqxmd.com/read/28167653/orai1-activates-proliferation-of-lymphatic-endothelial-cells-in-response-to-laminar-flow-through-kr%C3%A3-ppel-like-factors-2-and-4
#4
Dongwon Choi, Eunkyung Park, Eunson Jung, Young Jin Seong, Mingu Hong, Sunju Lee, James Burford, Georgina Gyarmati, Janos Peti-Peterdi, Sonal Srikanth, Yousang Gwack, Chester J Koh, Evgenii Boriushkin, Anne Hamik, Alex K Wong, Young-Kwon Hong
RATIONALE: Lymphatic vessels function to drain interstitial fluid from a variety of tissues. Although shear stress generated by fluid flow is known to trigger lymphatic expansion and remodeling, the molecular basis underlying flow-induced lymphatic growth is unknown. OBJECTIVE: We aimed to gain a better understanding of the mechanism by which laminar shear stress activates lymphatic proliferation. METHODS AND RESULTS: Primary endothelial cells from dermal blood and lymphatic vessels (BECs and LECs) were exposed to low-rate steady laminar flow...
February 6, 2017: Circulation Research
https://www.readbyqxmd.com/read/28165000/high-affinity-anchoring-of-the-decoration-protein-pb10-onto-the-bacteriophage-t5-capsid
#5
Emeline Vernhes, Madalena Renouard, Bernard Gilquin, Philippe Cuniasse, Dominique Durand, Patrick England, Sylviane Hoos, Alexis Huet, James F Conway, Anatoly Glukhov, Vladimir Ksenzenko, Eric Jacquet, Naïma Nhiri, Sophie Zinn-Justin, Pascale Boulanger
Bacteriophage capsids constitute icosahedral shells of exceptional stability that protect the viral genome. Many capsids display on their surface decoration proteins whose structure and function remain largely unknown. The decoration protein pb10 of phage T5 binds at the centre of the 120 hexamers formed by the major capsid protein. Here we determined the 3D structure of pb10 and investigated its capsid-binding properties using NMR, SAXS, cryoEM and SPR. Pb10 consists of an α-helical capsid-binding domain and an Ig-like domain exposed to the solvent...
February 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28164460/development-and-application-of-led-arrays-for-use-in-phototherapy-research
#6
Mohammed A Hadis, Paul R Cooper, Michael R Milward, Patricia C Gorecki, Edward Tarte, James Churm, William M Palin
Lasers/LEDs demonstrate therapeutic effects for a range of biomedical applications. However, a consensus on effective light irradiation parameters and efficient and reliable measurement techniques remain limited. The objective here is to develop, characterise and demonstrate the application of LED arrays in order to progress and improve the effectiveness and accuracy of in vitro photobiomodulation studies. 96-well plate format LED arrays (400-850 nm) were developed and characterised to accurately assess irradiance delivery to cell cultures...
February 6, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28153748/a-dead-box-helicase-mediates-an-rna-structural-transition-in-the-hiv-1-rev-response-element
#7
John A Hammond, Rajan Lamichhane, David P Millar, James R Williamson
Nuclear export of partially spliced or unspliced HIV-1 RNA transcripts requires binding of the viral protein regulator of expression of virion (Rev) to the Rev response element (RRE) and subsequent oligomerization in a cooperative manner. Cellular DEAD-box helicase DEAD-box protein 1 (DDX1) plays a role in HIV replication, interacting with and affecting Rev-containing HIV transcripts in vivo, interacting directly with the RRE and Rev in vitro, and promoting Rev oligomerization in vitro. Binding of DDX1 results in enhancement of Rev oligomerization on the RRE that is correlated with an RNA structural change within the RRE that persists even after dissociation of DDX1...
January 31, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/28151739/addendum-guidelines-for-the-prevention-of-peanut-allergy-in-the-united-states
#8
Alkis Togias, Susan F Cooper, Maria L Acebal, Amal Assaʼad, James R Baker, Lisa A Beck, Julie Block, Carol Byrd-Bredbenner, Edmond S Chan, Lawrence F Eichenfield, David M Fleischer, George J Fuchs, Glenn T Furuta, Matthew J Greenhawt, Ruchi S Gupta, Michele Habich, Stacie M Jones, Kari Keaton, Antonella Muraro, Marshall Plaut, Lanny J Rosenwasser, Daniel Rotrosen, Hugh A Sampson, Lynda C Schneider, Scott H Sicherer, Robert Sidbury, Jonathan Spergel, David R Stukus, Carina Venter, Joshua A Boyce
No abstract text is available yet for this article.
February 1, 2017: JAAPA: Official Journal of the American Academy of Physician Assistants
https://www.readbyqxmd.com/read/28142074/within-vs-between-subject-effects-of-intranasal-oxytocin-on-the-neural-response-to-cooperative-and-non-cooperative-social-interactions
#9
Xu Chen, Pritam Gautam, Ebrahim Haroon, James K Rilling
The neuropeptide oxytocin (OT) plays a critical role in modulating social behavior across a wide range of vertebrate species. In humans, intranasal oxytocin (INOT) has been shown to modulate various aspects of social behavior, such as empathy, trust, in-group preference, and memory of socially relevant cues. Most INOT studies employ cross-sectional designs despite the enhanced statistical power and reduction in error variance associated with individual differences characteristic of within-subject designs. Using the Prisoner Dilemma task, which models a real-life dyadic social interaction, our group has systematically explored the effect of INOT on social cooperation and non-cooperation using a cross-sectional design...
January 16, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28137368/addendum-guidelines-for-the-prevention-of-peanut-allergy-in-the-united-states-report-of-the-national-institute-of-allergy-and-infectious-diseases-sponsored-expert-panel
#10
Alkis Togias, Susan F Cooper, Maria L Acebal, Amal Assa'ad, James R Baker, Lisa A Beck, Julie Block, Carol Byrd-Bredbenner, Edmond S Chan, Lawrence F Eichenfield, David M Fleischer, George J Fuchs, Glenn T Furuta, Matthew J Greenhawt, Ruchi S Gupta, Michele Habich, Stacie M Jones, Kari Keaton, Antonella Muraro, Marshall Plaut, Lanny J Rosenwasser, Daniel Rotrosen, Hugh A Sampson, Lynda C Schneider, Scott H Sicherer, Robert Sidbury, Jonathan Spergel, David R Stukus, Carina Venter, Joshua A Boyce
BACKGROUND: Food allergy is an important public health problem because it affects children and adults, can be severe and even life-threatening, and may be increasing in prevalence. Beginning in 2008, the National Institute of Allergy and Infectious Diseases, working with other organizations and advocacy groups, led the development of the first clinical guidelines for the diagnosis and management of food allergy. A recent landmark clinical trial and other emerging data suggest that peanut allergy can be prevented through introduction of peanut-containing foods beginning in infancy...
January 2017: Journal of Pediatric Nursing
https://www.readbyqxmd.com/read/28135115/molecular-analysis-of-ephrin-a4-and-ephrin-b1-in-a-rabbit-model-of-craniosynostosis-likely-exclusion-as-the-loci-of-origin
#11
Gwen M Taylor, Gregory M Cooper, Joseph E Losee, Mark P Mooney, James Gilbert
Craniosynostosis (CS) has a prevalence of approximately 1 in every 2000 live births and is characterized by the premature fusion of one or more cranial sutures. Failure to maintain the cell lineage boundary at the coronal suture is thought to be involved in the pathology of some forms of CS. The Ephrin family of receptor tyrosine kinases consists of membrane-bound receptors and ligands that control cell patterning and the formation of developmental boundaries. Mutations in the ephrin A4 (EFNA4) and ephrin B1 (EFNB1) ligands have been linked to nonsyndromic CS and craniofrontonasal syndrome, respectively, in patient samples...
January 30, 2017: Cleft Palate-craniofacial Journal
https://www.readbyqxmd.com/read/28129896/inflammasomes-in-the-lung
#12
James W Pinkerton, Richard Y Kim, Avril A B Robertson, Jeremy A Hirota, Lisa G Wood, Darryl A Knight, Matthew A Cooper, Luke A J O'Neill, Jay C Horvat, Philip M Hansbro
Innate immune responses act as first line defences upon exposure to potentially noxious stimuli. The innate immune system has evolved numerous intracellular and extracellular receptors that undertake surveillance for potentially damaging particulates. Inflammasomes are intracellular innate immune multiprotein complexes that form and are activated following interaction with these stimuli. Inflammasome activation leads to the cleavage of pro-IL-1β and release of the pro-inflammatory cytokine, IL-1β, which initiates acute phase pro-inflammatory responses, and other responses are also involved (IL-18, pyroptosis)...
January 24, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28126347/acute-antibody-mediated-rejection-in-kidney-transplant-recipients
#13
REVIEW
Scott Davis, James E Cooper
Antibody-mediated rejection has now been recognized as one of the most important causes of graft loss. Transplantation across HLA barriers and nonadherence can result in acute antibody-mediated rejection, which is associated with particularly worse graft outcomes. New technologies, including genomic studies and assays to detect and define donor-specific antibodies, have provided important insights into the pathophysiology and diagnosis of acute antibody-mediated rejection but have engendered many questions about the clinical application of these tests in the prognosis and prevention of this protean disease process...
October 10, 2016: Transplantation Reviews
https://www.readbyqxmd.com/read/28122636/breast-milk-and-in-utero-transmission-of-hiv-1-select-for-envelope-variants-with-unique-molecular-signatures
#14
Kyle J Nakamura, Laura Heath, Edwin R Sobrera, Thomas A Wilkinson, Katherine Semrau, Chipepo Kankasa, Nicole H Tobin, Nicholas E Webb, Benhur Lee, Donald M Thea, Louise Kuhn, James I Mullins, Grace M Aldrovandi
BACKGROUND: Mother-to-child transmission of human immunodeficiency virus-type 1 (HIV-1) poses a serious health threat in developing countries, and adequate interventions are as yet unrealized. HIV-1 infection is frequently initiated by a single founder viral variant, but the factors that influence particular variant selection are poorly understood. RESULTS: Our analysis of 647 full-length HIV-1 subtype C and G viral envelope sequences from 22 mother-infant pairs reveals unique genotypic and phenotypic signatures that depend upon transmission route...
January 26, 2017: Retrovirology
https://www.readbyqxmd.com/read/28112956/the-theory-of-ultra-coarse-graining-3-coarse-grained-sites-with-rapid-local-equilibrium-of-internal-states
#15
James F Dama, Jaehyeok Jin, Gregory A Voth
When viewed through a coarse-grained lens, important molecular and biophysical systems can appear to undergo discrete, switch-like state changes in addition to more continuous configurational motions. One of our recent papers described a theory for bottom-up coarse-graining of the equilibrium statistics of models with such behavior, called ultra-coarse-grained (UCG) models, and a follow up paper described an implementation when the states of the coarse-grained sites or "beads" change rarely. However, not all systems with this discrete behavior fall under that special limit...
February 16, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28112737/pediatric-non-down-syndrome-acute-megakaryoblastic-leukemia-is-characterized-by-distinct-genomic-subsets-with-varying-outcomes
#16
Jasmijn D E de Rooij, Cristyn Branstetter, Jing Ma, Yongjin Li, Michael P Walsh, Jinjun Cheng, Askar Obulkasim, Jinjun Dang, John Easton, Lonneke J Verboon, Heather L Mulder, Martin Zimmermann, Cary Koss, Pankaj Gupta, Michael Edmonson, Michael Rusch, Joshua Yew Suang Lim, Katarina Reinhardt, Martina Pigazzi, Guangchun Song, Allen Eng Juh Yeoh, Lee-Yung Shih, Der-Cherng Liang, Stephanie Halene, Diane S Krause, Jinghui Zhang, James R Downing, Franco Locatelli, Dirk Reinhardt, Marry M van den Heuvel-Eibrink, C Michel Zwaan, Maarten Fornerod, Tanja A Gruber
Acute megakaryoblastic leukemia (AMKL) is a subtype of acute myeloid leukemia (AML) in which cells morphologically resemble abnormal megakaryoblasts. While rare in adults, AMKL accounts for 4-15% of newly diagnosed childhood AML cases. AMKL in individuals without Down syndrome (non-DS-AMKL) is frequently associated with poor clinical outcomes. Previous efforts have identified chimeric oncogenes in a substantial number of non-DS-AMKL cases, including RBM15-MKL1, CBFA2T3-GLIS2, KMT2A gene rearrangements, and NUP98-KDM5A...
January 23, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28109347/how-is-physician-work-valued
#17
Jeffrey P Jacobs, Stephen J Lahey, Francis C Nichols, James M Levett, George Gilbert Johnston, Richard K Freeman, James D St Louis, Julie Painter, Courtney Yohe, Cameron D Wright, Kirk R Kanter, John E Mayer, Keith S Naunheim, Jeffrey B Rich, Joseph E Bavaria
Strategies to value physician work continue to evolve. The Society of Thoracic Surgeons and The Society of Thoracic Surgeons National Database have an increasingly important role in this evolution. An understanding of the Current Procedural Terminology (CPT) system (American Medical Association [AMA], Chicago, IL) and the Relative Value Scale Update Committee (RUC) is necessary to comprehend how physician work is valued. In 1965, with the dawn of increasingly complex medical care, immense innovation, and the rollout of Medicare, the need for a common language describing medical services and procedures was recognized as being of critical importance...
February 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28108107/barth-syndrome-with-late-onset-cardiomyopathy-a-missed-opportunity-for-diagnosis
#18
Leanne Woiewodski, David Ezon, James Cooper, Brian Feingold
A male infant presented with neutropenia, growth delay, and death of a maternal uncle at age 2 years. Despite extensive evaluation over 10 years, Barth syndrome was not diagnosed until he presented in acute heart failure. Although late-onset cardiomyopathy is rare, persistence of common Barth features should have enabled earlier diagnosis.
January 18, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28091710/role-of-concurrent-vaginal-hysterectomy-in-the-outcomes-of-mesh-based-vaginal-pelvic-organ-prolapse-surgery
#19
James C Forde, Bilal Chughtai, Jennifer T Anger, Jialin Mao, Art Sedrakyan
INTRODUCTION AND HYPOTHESIS: Hysterectomy is often performed at the time of pelvic organ prolapse (POP) surgery; yet, there is insufficient evidence regarding the specific effect of hysterectomy on outcomes. We sought to determine the outcomes and associated short-term complications of mesh-based POP surgery with and without concurrent hysterectomy. METHODS: We utilized the New York Statewide Planning and Research Cooperation System (SPARCS) database to identify patients under 55 years of age undergoing surgeries for POP with mesh between 2009 and 2014...
January 13, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28077657/lmp1-and-lmp2a-collaborate-to-promote-epstein-barr-virus-ebv-induced-b-cell-lymphomas-in-a-cord-blood-humanized-mouse-model-but-are-not-essential
#20
Shi-Dong Ma, Ming-Han Tsai, James C Romero-Masters, Erik A Ranheim, Shane M Huebner, Jillian Bristol, Henri-Jacques Delecluse, Shannon C Kenney
: Epstein-Barr virus (EBV) infection is associated with B cell lymphomas in humans. The ability of EBV to convert human B cells into long-lived lymphoblastoid cell lines (LCLs) in vitro requires the collaborative effects of EBNA2 (which hijacks notch signaling), LMP1 (which mimics CD40 signaling), and EBNA 3A/3C (which inhibit oncogene-induced senescence and apoptosis). However, we recently showed that an LMP1-deleted EBV mutant induces B cell lymphomas in a newly developed cord blood-humanized mouse model that allows EBV-infected B cells to interact with CD4 T cells (the major source of CD40 ligand)...
January 11, 2017: Journal of Virology
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