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https://www.readbyqxmd.com/read/29432793/the-impact-of-natural-aging-on-computational-and-neural-indices-of-perceptual-decision-making-a-review
#1
REVIEW
Jessica Dully, David P McGovern, Redmond G O'Connell
It is well established that natural aging negatively impacts on a wide variety of cognitive functions and research has sought to identify core neural mechanisms that may account for these disparate changes. A central feature of any cognitive task is the requirement to translate sensory information into an appropriate action - a process commonly known as perceptual decision making. While computational, psychophysical, and neurophysiological research has made substantial progress in establishing the key computations and neural mechanisms underpinning decision making, it is only relatively recently that this knowledge has begun to be applied to research on aging...
February 9, 2018: Behavioural Brain Research
https://www.readbyqxmd.com/read/29367014/internal-validation-of-strmix%C3%A2-a-multi-laboratory-response-to-pcast
#2
Jo-Anne Bright, Rebecca Richards, Maarten Kruijver, Hannah Kelly, Catherine McGovern, Alan Magee, Andrew McWhorter, Anne Ciecko, Brian Peck, Chase Baumgartner, Christina Buettner, Scott McWilliams, Claire McKenna, Colin Gallacher, Ben Mallinder, Darren Wright, Deven Johnson, Dorothy Catella, Eugene Lien, Craig O'Connor, George Duncan, Jason Bundy, Jillian Echard, John Lowe, Joshua Stewart, Kathleen Corrado, Sheila Gentile, Marla Kaplan, Michelle Hassler, Naomi McDonald, Paul Hulme, Rachel H Oefelein, Shawn Montpetit, Melissa Strong, Sarah Noël, Simon Malsom, Steven Myers, Susan Welti, Tamyra Moretti, Teresa McMahon, Thomas Grill, Tim Kalafut, MaryMargaret Greer-Ritzheimer, Vickie Beamer, Duncan A Taylor, John S Buckleton
We report a large compilation of the internal validations of the probabilistic genotyping software STRmix™. Thirty one laboratories contributed data resulting in 2825 mixtures comprising three to six donors and a wide range of multiplex, equipment, mixture proportions and templates. Previously reported trends in the LR were confirmed including less discriminatory LRs occurring both for donors and non-donors at low template (for the donor in question) and at high contributor number. We were unable to isolate an effect of allelic sharing...
January 8, 2018: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/29361085/the-influence-of-hormonal-fluctuation-on-inflammatory-bowel-disease-symptom-severity-a-cross-sectional-cohort-study
#3
Vineet S Rolston, Laleh Boroujerdi, Millie D Long, Dermot P B McGovern, Wenli Chen, Christopher F Martin, Robert S Sandler, John D Carmichael, Marla Dubinsky, Gil Y Melmed
Background: Many women with inflammatory bowel disease (IBD) report changes in symptoms in association with hormonal changes during menses, pregnancy, and hormonal contraceptive use, suggesting a hormonal influence on disease activity. We aimed to identify and characterize IBD symptom fluctuations in women during times of hormonal variation. Methods: From June 2012 through September 2012, women enrolled in Crohn's and Colitis Foundation of America Partners , an online Internet cohort of patients with IBD, were invited to participate in this study...
January 18, 2018: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/29351039/resorbable-plates-in-secondary-cleft-nasal-reconstruction
#4
Pey-Yi Lin, Anthony P Gibson, John F Teichgraeber, Matthew R Greives
OBJECTIVE: The authors report on the use and complications of alloplastic resorbable plates and compare their use to autologous cartilage grafts in secondary cleft nasal reconstruction. DESIGN: Institutional review board (IRB)-approved retrospective chart review. SETTING: Texas Cleft-Craniofacial Center at the McGovern Medical School at the University of Texas Health Sciences Center at Houston. PATIENTS: Patients with unilateral or bilateral cleft lip nasal deformity who have undergone secondary correction of their nasal deformity with at least 1-year follow-up...
February 2018: Cleft Palate-craniofacial Journal
https://www.readbyqxmd.com/read/29347821/fluorescence-and-excited-state-conformational-dynamics-of-the-orange-carotenoid-protein
#5
Jason K Gurchiek, Han Bao, Maria Agustina Domínguez-Martín, Sarah E McGovern, Claire E Marquardt, Jerome D Roscioli, Soumen Ghosh, Cheryl A Kerfeld, Warren F Beck
The Orange Carotenoid Protein (OCP) mediates nonphotochemical quenching (NPQ) mechanisms in cyanobacteria. A bound ketocarotenoid serves as a sensor of mid-visible light intensity and as a quencher of phycocyanobilin excitons in the phycobilisome. The photochemical mechanism that triggers conversion of the protein from a resting, orange state (OCPO) to an active, red state (OCPR) after optical preparation of the S2 state of the carotenoid remains an open question. We report here that the fluorescence spectrum and quantum yield of the bound carotenoids in OCPO report important details of the motions that follow optical preparation of the S2 state...
January 18, 2018: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/29330502/targeting-insulin-like-growth-factor-i-and-extracellular-matrix-interactions-in-melanoma-progression
#6
Berline Murekatete, Ali Shokoohmand, Jacqui McGovern, Lipsa Mohanty, Christoph Meinert, Brett G Hollier, Alfred Zippelius, Zee Upton, Abhishek S Kashyap
Insulin-like growth factor (IGF)-I binds to the ECM protein vitronectin (VN) through IGF binding proteins (IGFBPs) to enhance proliferation and migration of skin keratinocytes and fibroblasts. Although evidence exists for the role of individual components of the complex (IGF-I, IGFBP-3 and VN), the cellular functions stimulated by these proteins together as a complex remains un-investigated in melanoma cells. We report here that the IGF-I:IGFBP-3:VN trimeric complex stimulates a dose-dependent increase in the proliferation and migration of WM35 and Sk-MEL28 melanoma cells...
January 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29189286/epidural-anesthesia-to-facilitate-organ-blood-flow-during-the-first-penile-transplantation-in-the-united-states-a-case-report
#7
Katarina J Ruscic, Grettel J Zamora-Berridi, Francis J McGovern, Curtis Cetrulo, Jonathan M Winograd, Kyle R Eberlin, Branko Bojovic, Dicken S Ko, T Anthony Anderson
Regional anesthesia has been used to help create local sympathectomy and improve blood flow in plastic surgery procedures involving tissue grafts and flaps. However, anesthetic techniques that reduce systemic vascular resistance must be used with caution in patients with aortic stenosis (AS). Combined neuraxial and general anesthesia with careful titration of the local anesthetic dose can be a safe approach for patients with AS undergoing microvascular procedures. We present the anesthetic management of the first North American penile transplant, on an obese patient with moderate AS...
November 16, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/29135080/a-comparison-of-adherence-and-persistence-by-medication-class-in-type-2-diabetes-a-systematic-review-and-meta-analysis
#8
Andrew McGovern, Zayd Tippu, William Hinton, Neil Munro, Martin Whyte, Simon de Lusignan
Limited medication adherence and persistence are barriers to successful treatment in type 2 diabetes (T2D). We searched MEDLINE, EMBASE, The Cochrane Library, The Register of Controlled Trials, PsychINFO, and CINAHL for observational and interventional studies comparing medication adherence or persistence between two or more glucose lowering medications in people with T2D. Where several studies (n≥5) provided the same comparison a random effects meta-analysis was performed reporting mean difference (MD), odds ratio (OR), or hazard ratio (HR) depending on the pooled study outcomes...
November 14, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/29117204/prevalence-of-binary-toxin-positive-clostridium-difficile-in-diarrhoeal-humans-in-the-absence-of-epidemic-ribotype-027
#9
Alan M McGovern, Grace O Androga, Daniel R Knight, Mark W Watson, Briony Elliott, Niki F Foster, Barbara J Chang, Thomas V Riley
Virulence of Clostridium difficile is primarily attributed to the large clostridial toxins A and B while the role of binary toxin (CDT) remains unclear. The prevalence of human strains of C. difficile possessing only CDT genes (A-B-CDT+) is generally low (< 5%), however, this genotype is commonly found in neonatal livestock both in Australia and elsewhere. Zoonotic transmission of C. difficile has been suggested previously. Most human diagnostic tests will not detect A-B-CDT+ strains of C. difficile because they focus on detection of toxin A and/or B...
2017: PloS One
https://www.readbyqxmd.com/read/29112734/memantine-prevents-acute-radiation-induced-toxicities-at-hippocampal-excitatory-synapses
#10
Joseph G Duman, Jeffrey Dinh, Wei Zhou, Henry Cham, Vasilis C Mavratsas, Matea Paveškovic, Shalaka Mulherkar, Susan L McGovern, Kimberley F Tolias, David R Grosshans
Background: Memantine has shown clinical utility in preventing radiation-induced cognitive impairment, but the mechanisms underlying its protective effects remain unknown. We hypothesized that abnormal glutamate signaling causes radiation-induced abnormalities in neuronal structure and that memantine prevents synaptic toxicity. Methods: Hippocampal cultures expressing eGFP were irradiated or sham-treated and their dendritic spine morphology assessed at acute (minutes) and later (days) times using high-resolution confocal microscopy...
November 2, 2017: Neuro-oncology
https://www.readbyqxmd.com/read/29095427/centrally-determined-standardization-of-flow-cytometry-methods-reduces-interlaboratory-variation-in-a-prospective-multicenter-study
#11
Liset Westera, Tanja van Viegen, Jenny Jeyarajah, Azar Azad, Janine Bilsborough, Gijs R van den Brink, Jonathan Cremer, Silvio Danese, Geert D'Haens, Lars Eckmann, William Faubion, Melissa Filice, Hannelie Korf, Dermot McGovern, Julian Panes, Azucena Salas, William J Sandborn, Mark S Silverberg, Michelle I Smith, Severine Vermeire, Stefania Vetrano, Lisa M Shackelton, Larry Stitt, Vipul Jairath, Barrett G Levesque, David M Spencer, Brian G Feagan, Niels Vande Casteele
OBJECTIVES: Flow cytometry (FC) aids in characterization of cellular and molecular factors involved in pathologic immune responses. Although FC has potential to facilitate early drug development in inflammatory bowel disease, interlaboratory variability limits its use in multicenter trials. Standardization of methods may address this limitation. We compared variability in FC-aided quantitation of T-cell responses across international laboratories using three analytical strategies. METHODS: Peripheral blood mononuclear cells (PBMCs) were isolated from three healthy donors, stimulated with phorbol 12-myristate 13-acetate and ionomycin at a central laboratory, fixed, frozen, and shipped to seven international laboratories...
November 2, 2017: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/28890854/quantitative-comparison-of-the-spreading-and-invasion-of-radial-growth-phase-and-metastatic-melanoma-cells-in-a-three-dimensional-human-skin-equivalent-model
#12
Parvathi Haridas, Jacqui A McGovern, Sean D L McElwain, Matthew J Simpson
BACKGROUND: Standard two-dimensional (2D) cell migration assays do not provide information about vertical invasion processes, which are critical for melanoma progression. We provide information about three-dimensional (3D) melanoma cell migration, proliferation and invasion in a 3D melanoma skin equivalent (MSE) model. In particular, we pay careful attention to compare the structure of the tissues in the MSE with similarly-prepared 3D human skin equivalent (HSE) models. The HSE model is identically prepared to the MSE model except that melanoma cells are omitted...
2017: PeerJ
https://www.readbyqxmd.com/read/28817446/bevacizumab-as-an-effective-treatment-for-radiation-necrosis-after-radiotherapy-for-melanoma-brain-metastases
#13
Isabella C Glitza, Nandita Guha-Thakurta, Neil M D'Souza, Rodabe N Amaria, Susan L McGovern, Ganesh Rao, Jing Li
Radiation necrosis (RN) is a potential late complication of radiotherapy for intracranial malignancy, which is often associated with significant neurological morbidity. Prolonged treatment with high-dose corticosteroids or surgical resection has been the standard care for RN, but protracted steroid use can lead to significant side effects and surgical resection is not always feasible. The antivascular endothelial growth factor monoclonal antibody bevacizumab induces clinical and radiographic improvements in RN, with overall good tolerance...
December 2017: Melanoma Research
https://www.readbyqxmd.com/read/28759310/ultrastructure-and-pathology-of-prion-protein-amyloid-accumulation-and-cellular-damage-in-extraneural-tissues-of-scrapie-infected-transgenic-mice-expressing-anchorless-prion-protein
#14
Brent Race, Martin Jeffrey, Gillian McGovern, David Dorward, Bruce Chesebro
In most human and animal prion diseases the abnormal disease-associated prion protein (PrPSc) is deposited as non-amyloid aggregates in CNS, spleen and lymphoid organs. In contrast, in humans and transgenic mice with PrP mutations which cause expression of PrP lacking a glycosylphosphatidylinositol (GPI)-anchor, most PrPSc is in the amyloid form. In transgenic mice expressing only anchorless PrP (tg anchorless), PrPSc is deposited not only in CNS and lymphoid tissues, but also in extraneural tissues including heart, brown fat, white fat, and colon...
July 4, 2017: Prion
https://www.readbyqxmd.com/read/28752233/upper-limb-lymphedema-in-breast-cancer-patients-in-the-era-of-z0011-sentinel-lymph-node-biopsy-and-breast-conservation
#15
N R Bhatt, M R Boland, R McGovern, A Lal, S Tormey, A J Lowery, B A Merrigan
INTRODUCTION: Surgical techniques in breast cancer (BCa) have seen a dramatic change recently with breast-conserving surgery (BCS) and sentinel lymph node biopsy (SLNB). The ACOSOG-Z0011 trial reported equivalence in outcomes for certain patients with SLN metastases treated with axillary lymph node dissection (ALND) or SLNB alone. Our aim was to investigate changes in lymphedema referral patterns in BCa patients over the last 3 years in a specialist unit and to elucidate effects of SLNB, BCS, and Z0011 trial publication on such patterns...
July 27, 2017: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/28712950/predictors-of-laparoscopic-simulation-performance-among-practicing-obstetrician-gynecologists
#16
Shyama Mathews, Michael Brodman, Debra D'Angelo, Scott Chudnoff, Peter McGovern, Tamara Kolev, Giti Bensinger, Santosh Mudiraj, Andreea Nemes, David Feldman, Patricia Kischak, Charles Ascher-Walsh
BACKGROUND: While simulation training has been established as an effective method for improving laparoscopic surgical performance in surgical residents, few studies have focused on its use for attending surgeons, particularly in obstetrics and gynecology. Surgical simulation may have a role in improving and maintaining proficiency in the operating room for practicing obstetrician gynecologists. OBJECTIVE: We sought to determine if parameters of performance for validated laparoscopic virtual simulation tasks correlate with surgical volume and characteristics of practicing obstetricians and gynecologists...
November 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28658209/fine-mapping-inflammatory-bowel-disease-loci-to-single-variant-resolution
#17
Hailiang Huang, Ming Fang, Luke Jostins, Maša Umićević Mirkov, Gabrielle Boucher, Carl A Anderson, Vibeke Andersen, Isabelle Cleynen, Adrian Cortes, François Crins, Mauro D'Amato, Valérie Deffontaine, Julia Dmitrieva, Elisa Docampo, Mahmoud Elansary, Kyle Kai-How Farh, Andre Franke, Ann-Stephan Gori, Philippe Goyette, Jonas Halfvarson, Talin Haritunians, Jo Knight, Ian C Lawrance, Charlie W Lees, Edouard Louis, Rob Mariman, Theo Meuwissen, Myriam Mni, Yukihide Momozawa, Miles Parkes, Sarah L Spain, Emilie Théâtre, Gosia Trynka, Jack Satsangi, Suzanne van Sommeren, Severine Vermeire, Ramnik J Xavier, Rinse K Weersma, Richard H Duerr, Christopher G Mathew, John D Rioux, Dermot P B McGovern, Judy H Cho, Michel Georges, Mark J Daly, Jeffrey C Barrett
Inflammatory bowel diseases are chronic gastrointestinal inflammatory disorders that affect millions of people worldwide. Genome-wide association studies have identified 200 inflammatory bowel disease-associated loci, but few have been conclusively resolved to specific functional variants. Here we report fine-mapping of 94 inflammatory bowel disease loci using high-density genotyping in 67,852 individuals. We pinpoint 18 associations to a single causal variant with greater than 95% certainty, and an additional 27 associations to a single variant with greater than 50% certainty...
July 13, 2017: Nature
https://www.readbyqxmd.com/read/28623880/associations-between-anhedonia-and-marijuana-use-escalation-across-mid-adolescence
#18
Adam M Leventhal, Junhan Cho, Matthew D Stone, Jessica L Barrington-Trimis, Chih-Ping Chou, Steven Y Sussman, Nathaniel R Riggs, Jennifer B Unger, Janet Audrain-McGovern, David R Strong
BACKGROUND AND AIMS: Anhedonia-a transdiagnostic psychopathological trait indicative of inability to experience pleasure-could lead to and result from adolescent marijuana use, yet this notion has not been tested. This study aimed to estimate the association of: (1) anhedonia at age 14 with rate of change in marijuana use over an 18-month follow-up, and (2) marijuana use at age 14 with rate of change in anhedonia over follow-up. Secondary aims were to test whether gender, baseline marijuana use history and peer marijuana use moderated these associations...
December 2017: Addiction
https://www.readbyqxmd.com/read/28537543/molecular-epidemiology-of-hepatitis-b-virus-infection-in-tanzania
#19
Joseph C Forbi, Michael Dillon, Michael A Purdy, Bakary S Drammeh, Alexandra Tejada-Strop, Daniel McGovern, Guo-Liang Xia, Yulin Lin, Lilia M Ganova-Raeva, David S Campo, Hong Thai, Gilberto Vaughan, Dunstan Haule, Regina P Kutaga, Sridhar V Basavaraju, Saleem Kamili, Yury E Khudyakov
Despite the significant public health problems associated with hepatitis B virus (HBV) in sub-Saharan Africa, many countries in this region do not have systematic HBV surveillance or genetic information on HBV circulating locally. Here, we report on the genetic characterization of 772 HBV strains from Tanzania. Phylogenetic analysis of the S-gene sequences showed prevalence of HBV genotype A (HBV/A, n=671, 86.9 %), followed by genotypes D (HBV/D, n=95, 12.3 %) and E (HBV/E, n=6, 0.8 %). All HBV/A sequences were further classified into subtype A1, while the HBV/D sequences were assigned to a new cluster...
May 25, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28536655/supporting-looked-after-children-and-care-leavers-in-decreasing-drugs-and-alcohol-solid-protocol-for-a-pilot-feasibility-randomised-controlled-trial-of-interventions-to-decrease-risky-substance-use-drugs-and-alcohol-and-improve-mental-health-of-looked-after
#20
Hayley Alderson, Ruth McGovern, Rebecca Brown, Denise Howel, Frauke Becker, Louise Carr, Alex Copello, Tony Fouweather, Eileen Kaner, Paul McArdle, Elaine McColl, Janet Shucksmith, Alison Steele, Luke Vale, Raghu Lingam
BACKGROUND: Looked after children (LAC) and care leavers are young people who have been placed under the legal care of local authorities, in many instances due to a history of abuse and/or neglect. These young people have a significantly increased risk of substance use and mental disorder compared to their peers. The aim of the SOLID study is to assess the feasibility and acceptability of a definitive three-arm multi-centre randomised controlled trial (RCT) that compares the effectiveness of two interventions that aim to reduce risky drug and alcohol use and improve mental health among LAC aged 12 to 20 years with usual care...
2017: Pilot and Feasibility Studies
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