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David healy

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https://www.readbyqxmd.com/read/28898696/a-dual-role-of-caspase-8-in-triggering-and-sensing-proliferation-associated-dna-damage-a-key-determinant-of-liver-cancer-development
#1
Yannick Boege, Mohsen Malehmir, Marc E Healy, Kira Bettermann, Anna Lorentzen, Mihael Vucur, Akshay K Ahuja, Friederike Böhm, Joachim C Mertens, Yutaka Shimizu, Lukas Frick, Caroline Remouchamps, Karun Mutreja, Thilo Kähne, Devakumar Sundaravinayagam, Monika J Wolf, Hubert Rehrauer, Christiane Koppe, Tobias Speicher, Susagna Padrissa-Altés, Renaud Maire, Jörn M Schattenberg, Ju-Seong Jeong, Lei Liu, Stefan Zwirner, Regina Boger, Norbert Hüser, Roger J Davis, Beat Müllhaupt, Holger Moch, Henning Schulze-Bergkamen, Pierre-Alain Clavien, Sabine Werner, Lubor Borsig, Sanjiv A Luther, Philipp J Jost, Ricardo Weinlich, Kristian Unger, Axel Behrens, Laura Hillert, Christopher Dillon, Michela Di Virgilio, David Wallach, Emmanuel Dejardin, Lars Zender, Michael Naumann, Henning Walczak, Douglas R Green, Massimo Lopes, Inna Lavrik, Tom Luedde, Mathias Heikenwalder, Achim Weber
Concomitant hepatocyte apoptosis and regeneration is a hallmark of chronic liver diseases (CLDs) predisposing to hepatocellular carcinoma (HCC). Here, we mechanistically link caspase-8-dependent apoptosis to HCC development via proliferation- and replication-associated DNA damage. Proliferation-associated replication stress, DNA damage, and genetic instability are detectable in CLDs before any neoplastic changes occur. Accumulated levels of hepatocyte apoptosis determine and predict subsequent hepatocarcinogenesis...
September 11, 2017: Cancer Cell
https://www.readbyqxmd.com/read/28887499/transcription-factors-nrf2-and-hsf1-have-opposing-functions-in-autophagy
#2
Sharadha Dayalan Naidu, Dina Dikovskaya, Egle Gaurilcikaite, Elena V Knatko, Zachary R Healy, Hema Mohan, Glenn Koh, Axel Laurell, Graeme Ball, David Olagnier, Laureano de la Vega, Ian G Ganley, Paul Talalay, Albena T Dinkova-Kostova
Autophagy plays a critical role in the maintenance of cellular homeostasis by degrading proteins, lipids and organelles. Autophagy is activated in response to stress, but its regulation in the context of other stress response pathways, such as those mediated by heat shock factor 1 (HSF1) and nuclear factor-erythroid 2 p45-related factor 2 (NRF2), is not well understood. We found that the Michael acceptor bis(2-hydoxybenzylidene)acetone (HBB2), a dual activator of NRF2 and HSF1, protects against the development of UV irradiation-mediated cutaneous squamous cell carcinoma in mice...
September 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28870578/depression-and-fatigue-in-patients-with-multiple-sclerosis
#3
Emily E Greeke, Alicia S Chua, Brian C Healy, David J Rintell, Tanuja Chitnis, Bonnie I Glanz
BACKGROUND: Previous research has examined the components of depression and fatigue in multiple sclerosis (MS), but the findings have been inconsistent. The aim of this study was to explore the associations between overall and subscale scores of the Center for Epidemiologic Studies-Depression Scale (CES-D) and the Modified Fatigue Impact Scale (MFIS) as well as the longitudinal changes in scores in a large cohort of MS patients. METHODS: MS subjects who completed a battery of patient reported outcome (PRO) measures including the CES-D and MFIS (N=435) were included in our analysis...
September 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28863296/associations-of-prolonged-standing-with-musculoskeletal-symptoms-a-systematic-review-of-laboratory-studies
#4
REVIEW
Pieter Coenen, Sharon Parry, Lisa Willenberg, Joyce W Shi, Lorena Romero, Diana M Blackwood, Genevieve N Healy, David W Dunstan, Leon M Straker
While prolonged standing has shown to be detrimentally associated with musculoskeletal symptoms, exposure limits and underlying mechanisms are not well understood. We systematically reviewed evidence from laboratory studies on musculoskeletal symptom development during prolonged (≥20min) uninterrupted standing, quantified acute dose-response associations and described underlying mechanisms. Peer-reviewed articles were systematically searched for. Data from included articles were tabulated, and dose-response associations were statistically pooled...
August 24, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28703592/interactions-between-%C3%AE-2-adrenoceptor-ligands-and-membrane-atomic-level-insights-from-magic-angle-spinning-nmr
#5
Si Yan, Duncan E Shaw, Linhong Yang, David A Sandham, Mark P Healy, John Reilly, Bing Wang
To understand the relationship between structural properties of the β2-adrenoceptor ligands and their interactions with membranes, we have investigated the location and distribution of five β2 agonists with distinct clinical durations and onsets of action (indacaterol, two indacaterol analogues, salmeterol and formoterol) in monounsaturated model membranes using magic angle spinning NMR to measure these interactions through both (1)H nuclear Overhauser enhancement (NOE) and paramagnetic relaxation enhancement (PRE) techniques...
August 4, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28662164/associations-of-sitting-accumulation-patterns-with-cardio-metabolic-risk-biomarkers-in-australian-adults
#6
John Bellettiere, Elisabeth A H Winkler, Sebastien F M Chastin, Jacqueline Kerr, Neville Owen, David W Dunstan, Genevieve N Healy
BACKGROUND: High amounts of time spent sitting can increase cardiovascular disease risk and are deleteriously associated cardio-metabolic risk biomarkers. Though evidence suggests that accruing sitting time in prolonged periods may convey additional risk, verification using high-quality measures is needed. We examined this issue in adults from the Australian Diabetes, Obesity and Lifestyle Study, using accurate measures of sitting accumulation. METHODS: In 2011/12, 739 adults aged 36 to 89 years (mean±SD 58±10 years) wore activPAL3™ monitors (which provide accurate objective measures of sitting); 678 provided ≥4 valid days of monitor data and complete cardio-metabolic biomarker and confounder data...
2017: PloS One
https://www.readbyqxmd.com/read/28661293/motorcycle-policy-and-the-public-interest-a-recommendation-for-a-new-type-of-partial-motorcycle-helmet-law
#7
Kurt B Nolte, Colleen Healy, Clifford M Rees, David Sklar
Motorcycle helmet laws are perceived to infringe upon individual rights even though they reduce mortality and health care costs. We describe proposed helmet legislation that protects individual rights and provides incentives for helmet use through a differential motorcycle registration fee that requires higher fees for those who wish to ride without a helmet.
March 2017: Journal of Law, Medicine & Ethics: a Journal of the American Society of Law, Medicine & Ethics
https://www.readbyqxmd.com/read/28639918/midterm-analysis-of-survival-and-cause-of-death-following-endovascular-abdominal-aortic-aneurysm-repair
#8
Gerard M Healy, Ciaran E Redmond, Sam Gray, Lucian Iacob, Stephen Sheehan, Joseph F Dowdall, Mary Barry, Colin P Cantwell, David P Brophy
PURPOSE: To assess rates of complications, secondary interventions, survival, and cause of death following endovascular abdominal aortic aneurysm (AAA) repair over a 10-year period. MATERIALS AND METHODS: Single-institution retrospective cohort study of all patients undergoing primary endovascular aortic aneurysm repair (EVAR) between July 2006 and June 2015. The population constituted 175 patients with 163 fusiform and 12 saccular AAAs. Of these, 149 (85%) were male, with mean age 75...
July 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28632626/in-reply
#9
Michael F Aziz, David W Healy, Ansgar M Brambrink, Sachin Kheterpal
No abstract text is available yet for this article.
July 2017: Anesthesiology
https://www.readbyqxmd.com/read/28558781/reducing-occupational-sitting-workers-perspectives-on-participation-in-a-multi-component-intervention
#10
Nyssa T Hadgraft, Lisa Willenberg, Anthony D LaMontagne, Keti Malkoski, David W Dunstan, Genevieve N Healy, Marj Moodie, Elizabeth G Eakin, Neville Owen, Sheleigh P Lawler
BACKGROUND: Office workers spend much of their time sitting, which is now understood to be a risk factor for several chronic diseases. This qualitative study examined participants' perspectives following their involvement in a cluster randomised controlled trial of a multi-component intervention targeting prolonged workplace sitting (Stand Up Victoria). The intervention incorporated a sit-stand workstation, individual health coaching and organisational support strategies. The aim of the study was to explore the acceptability of the intervention, barriers and facilitators to reducing workplace sitting, and perceived effects of the intervention on workplace culture, productivity and health-related outcomes...
May 30, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28538025/a-cluster-rct-to-reduce-workers-sitting-time-impact-on-cardiometabolic-biomarkers
#11
Genevieve N Healy, Elisabeth A H Winkler, Elizabeth G Eakin, Neville Owen, Anthony D Lamontagne, Marj Moodie, David W Dunstan
PURPOSE: To evaluate the initial and long-term impacts on cardiometabolic health indicators of the Stand Up Victoria intervention-a 12-month, multicomponent workplace-delivered intervention that successfully reduced overall sitting time, primarily by increasing standing time. METHODS: Office worksites (≥1 km apart) from a single organization were cluster randomized to intervention (n = 7) or control (n = 7). Participants were 136 intervention and 95 control desk-based workers (5-39 per worksite; 68% women; mean ± SD age = 45...
October 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28530125/pro-inflammatory-activation-of-primary-microglia-and-macrophages-increases-18%C3%A2-kda-translocator-protein-expression-in-rodents-but-not-humans
#12
David R Owen, Nehal Narayan, Lisa Wells, Luke Healy, Erica Smyth, Eugenii A Rabiner, Dylan Galloway, John B Williams, Joshua Lehr, Harpreet Mandhair, Laura An Peferoen, Peter C Taylor, Sandra Amor, Jack P Antel, Paul M Matthews, Craig S Moore
The 18kDa Translocator Protein (TSPO) is the most commonly used tissue-specific marker of inflammation in positron emission tomography (PET) studies. It is expressed in myeloid cells such as microglia and macrophages, and in rodent myeloid cells expression increases with cellular activation. We assessed the effect of myeloid cell activation on TSPO gene expression in both primary human and rodent microglia and macrophages in vitro, and also measured TSPO radioligand binding with (3)H-PBR28 in primary human macrophages...
August 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28451784/pre-existing-low-back-symptoms-impact-adversely-on-sitting-time-reduction-in-office-workers
#13
Pieter Coenen, Genevieve N Healy, Elisabeth A H Winkler, David W Dunstan, Neville Owen, Marj Moodie, Anthony D LaMontagne, Elizabeth A Eakin, Leon M Straker
OBJECTIVES: Initiatives to reduce office-workplace sitting are proliferating, but the impact of pre-existing musculoskeletal symptoms on their effectiveness has not been determined. We assessed the influence of musculoskeletal symptoms on the outcomes of a workplace sitting intervention. METHODS: Baseline and 3-month data from a cluster-randomized controlled trial of a workplace sitting intervention (Stand Up Victoria; trial registration number ACTRN12611000742976) were used...
April 27, 2017: International Archives of Occupational and Environmental Health
https://www.readbyqxmd.com/read/28424246/enteropathy-associated-t-cell-lymphoma-subtypes-are-characterized-by-loss-of-function-of-setd2
#14
Andrea B Moffitt, Sarah L Ondrejka, Matthew McKinney, Rachel E Rempel, John R Goodlad, Chun Huat Teh, Sirpa Leppa, Susanna Mannisto, Panu E Kovanen, Eric Tse, Rex K H Au-Yeung, Yok-Lam Kwong, Gopesh Srivastava, Javeed Iqbal, Jiayu Yu, Kikkeri Naresh, Diego Villa, Randy D Gascoyne, Jonathan Said, Magdalena B Czader, Amy Chadburn, Kristy L Richards, Deepthi Rajagopalan, Nicholas S Davis, Eileen C Smith, Brooke C Palus, Tiffany J Tzeng, Jane A Healy, Patricia L Lugar, Jyotishka Datta, Cassandra Love, Shawn Levy, David B Dunson, Yuan Zhuang, Eric D Hsi, Sandeep S Dave
Enteropathy-associated T cell lymphoma (EATL) is a lethal, and the most common, neoplastic complication of celiac disease. Here, we defined the genetic landscape of EATL through whole-exome sequencing of 69 EATL tumors. SETD2 was the most frequently silenced gene in EATL (32% of cases). The JAK-STAT pathway was the most frequently mutated pathway, with frequent mutations in STAT5B as well as JAK1, JAK3, STAT3, and SOCS1 We also identified mutations in KRAS, TP53, and TERT Type I EATL and type II EATL (monomorphic epitheliotropic intestinal T cell lymphoma) had highly overlapping genetic alterations indicating shared mechanisms underlying their pathogenesis...
May 1, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28359339/high-dose-statin-prophylaxis-in-cardiopulmonary-bypass-related-surgery-clinical-utility
#15
RANDOMIZED CONTROLLED TRIAL
Yie Roei Chee, R William G Watson, James McCarthy, Jehan Zeb Chughtai, Lars Nölke, David G Healy
BACKGROUND: Previous studies from our group demonstrated the anti-inflammatory properties of statins on cardiopulmonary bypass (CPB), through inhibition of neutrophil transendothelial migration. We sought to determine the utility of preoperative statin on patients undergoing cardiac surgery, to investigate any moderating effects on the systemic inflammatory response (SIRS) with CPB, and to evaluate any clinical impact on our patients. METHODS: This is a prospective, randomised controlled trial with national regulatory body approval...
March 31, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28340615/glucocorticoids-induce-production-of-reactive-oxygen-species-reactive-nitrogen-species-and-dna-damage-through-an-inos-mediated-pathway-in-breast-cancer
#16
Renée L Flaherty, Matthew Owen, Aidan Fagan-Murphy, Haya Intabli, David Healy, Anika Patel, Marcus C Allen, Bhavik A Patel, Melanie S Flint
BACKGROUND: Psychological stress increases the circulating levels of the stress hormones cortisol and norepinephrine (NE). Chronic exposure to elevated stress hormones has been linked to a reduced response to chemotherapy through induction of DNA damage. We hypothesize that stress hormone signalling may induce DNA damage through the production of reactive oxygen species (ROS)/reactive nitrogen species (RNS) and interference in DNA repair processes, promoting tumourigenesis. METHODS: Breast cancer cell lines were incubated with physiological levels of cortisol and NE in the presence and absence of receptor antagonists and inducible nitric oxide synthase (iNOS) inhibitors and DNA damage measured using phosphorylated γ-H2AX...
March 24, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28297429/method-and-phantom-to-study-combined-effects-of-in-plane-x-y-and-z-axis-resolution-for-3d-ct-imaging
#17
David Goodenough, Josh Levy, Smari Kristinsson, Jesper Fredriksson, Hildur Olafsdottir, Austin Healy
Increasingly, the advent of multislice CT scanners, volume CT scanners, and total body spiral acquisition modes has led to the use of Multi Planar Reconstruction and 3D datasets. In considering 3D resolution properties of a CT system it is important to note that both the in-plane (x,y) and z-axis (slice thickness) influence the visualization and detection of objects within the scanned volume. This study investigates ways to consider both the in-plane resolution and the z-axis resolution in a single phantom wherein analytic or visualized analysis can yield information on these combined effects...
September 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28264684/intervening-to-reduce-workplace-sitting-mediating-role-of-social-cognitive-constructs-during-a-cluster-randomised-controlled-trial
#18
RANDOMIZED CONTROLLED TRIAL
Nyssa T Hadgraft, Elisabeth A H Winkler, Genevieve N Healy, Brigid M Lynch, Maike Neuhaus, Elizabeth G Eakin, David W Dunstan, Neville Owen, Brianna S Fjeldsoe
BACKGROUND: The Stand Up Victoria multi-component intervention successfully reduced workplace sitting time in both the short (three months) and long (12 months) term. To further understand how this intervention worked, we aimed to assess the impact of the intervention on four social-cognitive constructs, and examined whether these constructs mediated intervention effects on workplace sitting time at 3 and 12 months post-baseline. METHODS: Two hundred and thirty one office-based workers (14 worksites, single government employer) were randomised to intervention or control conditions by worksite...
March 6, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28240701/twelve-year-television-viewing-time-trajectories-and-physical-function-in-older-adults
#19
Natasha Reid, Genevieve N Healy, Robin M Daly, Peter Baker, Elizabeth G Eakin, David W Dunstan, Neville Owen, Paul A Gardiner
INTRODUCTION: The purposes of this study were to identify trajectories of older adults' television viewing (TV) time for 12 yr and to examine their associations with performance-based measures of physical function. METHODS: Data on TV time (h·wk) and sociodemographic factors were collected at each assessment of the Australian Diabetes, Obesity and Lifestyle Study (1999/2000, 2004/2005, and 2011/2012), with objective measures of physical function (2.44 m timed up and go [TUG, s] and knee extensor strength [KES, kg] tests) collected at the final (2011/2012) assessment...
July 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28229911/diagnostic-accuracy-of-carotid-intima-media-thickness-in-predicting-coronary-plaque-burden-on-coronary-computed-tomography-angiography-in-patients-with-obstructive-sleep-apnoea
#20
David J Murphy, Sophie J Crinion, Ciaran E Redmond, Gerard M Healy, Walter T McNicholas, Silke Ryan, Jonathan D Dodd
AIM: To assess the diagnostic accuracy of common carotid artery intima media thickness (CIMT) for coronary artery disease (CAD) detection in patients with obstructive sleep apnoea (OSA). MATERIALS & METHODS: Patients with clinically suspected OSA prospectively underwent polysomnography (PSG), ultrasound CIMT measurement and coronary computed tomography angiography (CTA). An average CIMT of ≥0.9 mm in either common carotid artery designated as a positive test...
February 11, 2017: Journal of Cardiovascular Computed Tomography
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