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Stephen May

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https://www.readbyqxmd.com/read/28738187/presymptomatic-atrophy-in-autosomal-dominant-alzheimer-s-disease-a%C3%A2-serial-mri-study
#1
Kirsi M Kinnunen, David M Cash, Teresa Poole, Chris Frost, Tammie L S Benzinger, R Laila Ahsan, Kelvin K Leung, M Jorge Cardoso, Marc Modat, Ian B Malone, John C Morris, Randall J Bateman, Daniel S Marcus, Alison Goate, Stephen Salloway, Stephen Correia, Reisa A Sperling, Jasmeer P Chhatwal, Richard Mayeux, Adam M Brickman, Ralph N Martins, Martin R Farlow, Bernardino Ghetti, Andrew J Saykin, Clifford R Jack, Peter R Schofield, Eric McDade, Michael W Weiner, John M Ringman, Paul M Thompson, Colin L Masters, Christopher C Rowe, Martin N Rossor, Sebastien Ourselin, Nick C Fox
INTRODUCTION: Identifying at what point atrophy rates first change in Alzheimer's disease is important for informing design of presymptomatic trials. METHODS: Serial T1-weighed magnetic resonance imaging scans of 94 participants (28 noncarriers, 66 carriers) from the Dominantly Inherited Alzheimer Network were used to measure brain, ventricular, and hippocampal atrophy rates. For each structure, nonlinear mixed-effects models estimated the change-points when atrophy rates deviate from normal and the rates of change before and after this point...
July 21, 2017: Alzheimer's & Dementia: the Journal of the Alzheimer's Association
https://www.readbyqxmd.com/read/28737531/potential-causes-of-elevated-ree-following-high-intensity-exercise
#2
Gary R Hunter, Douglas R Moellering, Stephen J Carter, Barbara A Gower, Marcas M Bamman, Lyndsey M Hornbuckle, Eric P Plaisance, Gordon Fisher
INTRODUCTION: Resting energy expenditure (REE) increases following intense exercise; however, little is known concerning mechanisms. PURPOSE: Determine effects of a single bout of moderate-intensity continuous aerobic exercise (MIC), or high intensity interval exercise (HII) on REE under energy balance conditions. METHODS: Thirty-three untrained premenopausal women were evaluated at baseline, after 8-16 weeks of training, 22 hours following either MIC (50% peak VO2) or HII (84% peak VO2)...
July 21, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28735814/tyrosine-kinase-inhibitors-as-modulators-of-trastuzumab-mediated-antibody-dependent-cell-mediated-cytotoxicity-in-breast-cancer-cell-lines
#3
Denis M Collins, Kathy Gately, Clare Hughes, Connla Edwards, Anthony Davies, Stephen F Madden, Kenneth J O'Byrne, Norma O'Donovan, John Crown
BACKGROUND: Trastuzumab is an anti-HER2 monoclonal antibody (mAb) therapy capable of antibody-dependent cell-mediated cytotoxicity (ADCC) and used in the treatment of HER2+ breast cancer. Through interactions with FcƴR+ immune cell subsets, trastuzumab functions as a passive immunotherapy. The EGFR/HER2-targeting tyrosine kinase inhibitor (TKI) lapatinib and the next generation TKIs afatinib and neratinib, can alter HER2 levels, potentially modulating the ADCC response to trastuzumab...
July 15, 2017: Cellular Immunology
https://www.readbyqxmd.com/read/28735743/exposure-to-meat-derived-carcinogens-and-bulky-dna-adduct-levels-in-normal-appearing-colon-mucosa
#4
Vikki Ho, Vanessa Brunetti, Sarah Peacock, Thomas E Massey, Roger W L Godschalk, Frederik J van Schooten, Janet E Ashbury, Stephen J Vanner, Will D King
INTRODUCTION: Meat consumption is a risk factor for colorectal cancer. This research investigated the relationship between meat-derived carcinogen exposure and bulky DNA adduct levels, a biomarker of DNA damage, in colon mucosa. METHODS: Least squares regression was used to examine the relationship between meat-derived carcinogen exposure (PhIP and meat mutagenicity) and bulky DNA adduct levels in normal-appearing colon tissue measured using (32)P-postlabelling among 202 patients undergoing a screening colonoscopy...
September 2017: Mutation Research
https://www.readbyqxmd.com/read/28734911/plaque-rupture-in-coronary-atherosclerosis-is-associated-with-increased-plaque-structural-stress
#5
Charis Costopoulos, Yuan Huang, Adam J Brown, Patrick A Calvert, Stephen P Hoole, Nick E J West, Jonathan H Gillard, Zhongzhao Teng, Martin R Bennett
OBJECTIVES: The aim of this study was to identify the determinants of plaque structural stress (PSS) and the relationship between PSS and plaques with rupture. BACKGROUND: Plaque rupture is the most common cause of myocardial infarction, occurring particularly in higher risk lesions such as fibroatheromas. However, prospective intravascular ultrasound-virtual histology studies indicate that <10% higher risk plaques cause clinical events over 3 years, indicating that other factors also determine plaque rupture...
July 13, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28734614/correlation-of-the-caprini-score-and-venous-thromboembolism-incidence-following-primary-total-joint-arthroplasty-results-of-a-single-institution-protocol
#6
Dexter K Bateman, Robert W Dow, Andrzej Brzezinski, Howard Y Bar-Eli, Stephen T Kayiaros
BACKGROUND: Venous thromboembolism (VTE), including pulmonary embolism (PE) and deep vein thrombosis, is a serious complication after total joint arthroplasty (TJA). Risk assessment models are increasingly used to provide patient-specific risk stratification. A recently implemented protocol mandates calculation of a Caprini Score for all surgical patients at our institution. We investigated the accuracy of the Caprini Score in predicting VTE events following TJA. METHODS: A retrospective review of patients undergoing primary total hip (THA) and total knee arthroplasty (TKA) over a 1-year time period was performed...
July 5, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28733428/tcr-repertoire-intratumor-heterogeneity-in-localized-lung-adenocarcinomas-an-association-with-predicted-neoantigen-heterogeneity-and-postsurgical-recurrence
#7
Alexandre Reuben, Rachel M Gittelman, Jianjun Gao, Jiexin Zhang, Erik Yusko, Chang-Jiun Wu, Ryan Emerson, Jianhua Zhang, Christopher M Tipton, Jun Li, Kelly Quek, Vancheswaran Gopalakrishnan, Runzhe Chen, Luis Vence, Tina Cascone, Marissa Vignali, Junya Fujimoto, Jaime Rodriguez-Canales, Edwin R Parra, Latasha D Little, Curtis Gumbs, Marie-Andrée Forget, Lorenzo Federico, Cara Haymaker, Carmen Behrens, Sharon Benzeno, Chantale Bernatchez, Boris Sepesi, Don L Gibbons, Jennifer A Wargo, William N William, Stephen G Swisher, John Heymach, Harlan Robins, J Jack Lee, Padmanee Sharma, James P Allison, P Andrew Futreal, Ignacio I Wistuba, Jianjun Zhang
Genomic intratumor heterogeneity (ITH) may be associated with postsurgical relapse of localized lung adenocarcinomas. Recently, mutations, through generation of neoantigens were shown to alter tumor immunogenicity through T cell responses. Here, we performed sequencing of the T cell receptor (TCR) in 45 tumor regions from 11 localized lung adenocarcinomas and observed substantial intratumor differences in T cell density and clonality with the majority of T cell clones restricted to individual tumor regions...
July 21, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28732785/previous-antibiotic-related-adverse-drug-reactions-do-not-reduce-expectations-for-antibiotic-treatment-of-upper-respiratory-tract-infections
#8
Stephen R Ritchie, Kalpa J Jayanatha, Eamon J Duffy, James Chancellor, Zarah Allport, Mark G Thomas
BACKGROUND: Patients' expectations may influence prescribers' decisions about antibiotic prescribing for upper respiratory tract infection (URTI). We examined whether a history of an antibiotic related adverse drug reaction (aADR) influenced a person's perception about the safety of antibiotics or their expectation of receiving an antibiotic prescription for an URTI. METHODS: We developed a questionnaire and surveyed 103 hospital inpatients, 38 of whom (37%) reported past experience of aADR...
July 18, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28732488/expression-of-the-scaffold-connector-enhancer-of-kinase-suppressor-of-ras-1-cnksr1-is-correlated-with-clinical-outcome-in-pancreatic-cancer
#9
Humair S Quadri, Taylor J Aiken, Michael Allgaeuer, Radim Moravec, Sean Altekruse, S Perwez Hussain, Markku M Miettinen, Stephen M Hewitt, Udo Rudloff
BACKGROUND: Despite the near universal occurrence of activating codon 12 KRAS somatic variants in pancreatic cancer, there is considerable heterogeneity in the molecular make-up, MAPK/ERK pathway activation states, and clinical outcome in this disease. We analyzed the expression levels of CNKSR1, a scaffold that influences MAPK/ERK pathway activity, in clinical pancreas cancer specimens and their impact on survival of patients with pancreatic cancer. METHODS: Immunohistochemical staining for CNKSR1 expression was performed on 120 specimens from three independent pancreatic cancer tissue registries, phospho-ERK levels were measured in 86 samples...
July 21, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28731930/early-life-exposure-to-chinese-famine-modifies-the-association-between-hypertension-and-cardiovascular-disease
#10
Zumin Shi, Stephen J Nicholls, Anne W Taylor, Dianna J Magliano, Sarah Appleton, Paul Zimmet
OBJECTIVE: Studies have shown that famine exposure during early life may increase the risk of cardiovascular disease (CVD), hypertension, and diabetes during adulthood. We aimed to assess whether exposure to the Chinese famine (1959-1961) modifies the association between hypertension and CVD. METHODS: We investigated data of 5772 adults born between 1954 and 1964 from the China Health and Retirement Longitudinal Study. CVD was based on self-reported doctor's diagnosis of heart problems (heart attack, coronary heart disease, angina, congestive heart failure, or other heart problems) and stroke...
July 20, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28731899/current-perspectives-on-invasive-nontyphoidal-salmonella-disease
#11
Andrea H Haselbeck, Ursula Panzner, Justin Im, Stephen Baker, Christian G Meyer, Florian Marks
PURPOSE OF REVIEW: We searched PubMed for scientific literature published in the past 2 years for relevant information regarding the burden of invasive nontyphoidal Salmonella disease and host factors associated with nontyphoidal Salmonella infection and discuss current knowledge on vaccine development. The following search terms were used: Salmonella, non typhoidal/nontyphoidal, NTS, disease, bloodstream infection, invasive, sepsis/septicaemia/septicemia, bacteraemia/bacteremia, gastroenteritis, incidence, prevalence, morbidity, mortality, case fatality, host/risk factor, vaccination, and prevention/control...
July 20, 2017: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/28731381/reperfusion-after-ischemic-stroke-is-associated-with-reduced-brain-edema
#12
Hannah J Irvine, Ann-Christin Ostwaldt, Matthew B Bevers, Simone Dixon, Thomas Wk Battey, Bruce Cv Campbell, Stephen M Davis, Geoffrey A Donnan, Kevin N Sheth, Reza Jahan, Jeffrey L Saver, Chelsea S Kidwell, W Taylor Kimberly
Rapid revascularization is highly effective for acute stroke, but animal studies suggest that reperfusion edema may attenuate its beneficial effects. We investigated the relationship between reperfusion and edema in patients from the Echoplanar Imaging Thrombolysis Evaluation Trial (EPITHET) and Mechanical Retrieval and Recanalization of Stroke Clots Using Embolectomy (MR RESCUE) cohorts. Reperfusion percentage was measured as the difference in perfusion-weighted imaging lesion volume between baseline and follow-up (day 3-5 for EPITHET; day 6-8 for MR RESCUE)...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28731370/an-evaluation-of-a-factor-xa-based-clotting-time-test-for-enoxaparin-a-proof-of-concept-study
#13
Deborah P J Ng, Stephen B Duffull, James M Faed, Geoffrey K Isbister, Abhishek Gulati
A well-accepted test for monitoring anticoagulation by enoxaparin is not currently available. As inadequate dosing may result in thrombosis or bleeding, a clinical need exists for a suitable test. Previous in silico and in vitro studies have identified factor Xa as an appropriate activating agent, and the phospholipid Actin FS as a cofactor for a Xa clotting time (TenaCT) test. A proof-of-concept study was designed to (1) explore the reproducibility of the TenaCT test and (2) explore factors that could affect the performance of the test...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28731000/appropriateness-based-reimbursement-of-elective-invasive-coronary-procedures-in-low-and-middle-income-countries-preliminary-assessment-of-feasibility-in-india
#14
Ganesan Karthikeyan, Umesh Shirodkar, Meeta Rajiv Lochan, Stephen Birch
BACKGROUND: Elective coronary interventional procedures are often overused and sometimes inappropriately used. The incentives for overuse are greater in low- and middle-income countries, where much of healthcare is provided by poorly regulated, fee-for-service systems. Overuse and inappropriate use increase healthcare costs and are potentially harmful to patients. Linking appropriate use of elective procedures to their reimbursement might deter overuse. METHODS: We explored the feasibility of introducing appropriateness criteria as a precondition to settling reimbursement claims in a publicly funded health insurance scheme in Maharashtra, India...
January 2017: National Medical Journal of India
https://www.readbyqxmd.com/read/28730920/validity-of-a-device-designed-to-measure-braking-power-in-bicycle-disc-brakes
#15
Matthew C Miller, Philip W Fink, Paul William Macdermid, Blake G Perry, Stephen R Stannard
Real-world cycling performance depends not only on exercise capacities, but also on efficiently traversing the bicycle through the terrain. The aim of this study was to determine if it was possible to quantify the braking done by a cyclist in the field. One cyclist performed 408 braking trials (348 on a flat road; 60 on a flat dirt path) over 5 days on a bicycle fitted with brake torque and angular velocity sensors to measure brake power. Based on Newtonian physics, the sum of brake work, aerodynamic drag and rolling resistance was compared with the change in kinetic energy in each braking event...
July 21, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28729702/structure-of-general-population-antibody-titer-distributions-to-influenza-a-virus
#16
Nguyen Thi Duy Nhat, Stacy Todd, Erwin de Bruin, Tran Thi Nhu Thao, Nguyen Ha Thao Vy, Tran Minh Quan, Dao Nguyen Vinh, Janko van Beek, Pham Hong Anh, Ha Minh Lam, Nguyen Thanh Hung, Nguyen Thi Le Thanh, Huynh Le Anh Huy, Vo Thi Hong Ha, Stephen Baker, Guy E Thwaites, Nguyen Thi Nam Lien, Tran Thi Kim Hong, Jeremy Farrar, Cameron P Simmons, Nguyen Van Vinh Chau, Marion Koopmans, Maciej F Boni
Seroepidemiological studies aim to understand population-level exposure and immunity to infectious diseases. Their results are normally presented as binary outcomes describing the presence or absence of pathogen-specific antibody, despite the fact that many assays measure continuous quantities. A population's natural distribution of antibody titers to an endemic infectious disease may include information on multiple serological states - naiveté, recent infection, non-recent infection, childhood infection - depending on the disease in question and the acquisition and waning patterns of immunity...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28729037/increased-gyrification-in-schizophrenia-and-non-affective-first-episode-of-psychosis
#17
Riccardo Zuliani, Giuseppe Delvecchio, Carolina Bonivento, Giulia Cattarinussi, Cinzia Perlini, Marcella Bellani, Veronica Marinelli, Maria Gloria Rossetti, Antonio Lasalvia, Andrew McIntosh, Stephen M Lawrie, Matteo Balestrieri, Mirella Ruggeri, Paolo Brambilla
BACKGROUND: Prefrontal cortex gyrification has been suggested to be altered in patients with schizophrenia and first episode psychosis. Therefore, it may represent a possible trait marker for these illnesses and an indirect evidence of a disrupted underlying connectivity. The aim of this study was to add further evidence to the existing literature on the role of prefrontal gyrification in psychosis by carrying out a study on a sizeable sample of chronic patients with schizophrenia and non-affective first-episode psychosis (FEP-NA) patients...
July 17, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28728887/effectiveness-of-exercise-intervention-on-improving-fundamental-movement-skills-and-motor-coordination-in-overweight-obese-children-and-adolescents-a-systematic-review
#18
REVIEW
Ahreum Han, Allan Fu, Stephen Cobley, Ross H Sanders
OBJECTIVES: Childhood obesity is negatively associated with fundamental movement skill and motor coordination, which in turn constrains physical activity participation and adherence thereby forming a 'vicious cycle'. However, developing motor skill and coordination in childhood could help to break the vicious cycle to reduce childhood obesity. The objective of this systematic review was to determine the effectiveness of exercise and physical activity interventions on improving fundamental movement skill and motor coordination in overweight/obese children and adolescents...
July 8, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28728642/a-latent-profile-analysis-of-aggression-and-victimization-across-relationship-types-among-veterans-who-use-substances
#19
RaeAnn E Anderson, Erin E Bonar, Maureen A Walton, Jason E Goldstick, Sheila A M Rauch, Quyen M Epstein-Ngo, Stephen T Chermack
OBJECTIVE: This study examined patterns of violence victimization and aggression in both intimate partner and nonpartner relationships among U.S. military veterans using latent profile analysis to identify subtypes of violence involvement. METHOD: Participants were 839 substance use treatment-seeking veterans (93% male) from a large Veterans Affairs Medical Center who completed screening measures for a randomized controlled trial. RESULTS: Past-year violence involvement, including both intimate partner violence (IPV) and nonpartner violence (NPV), was common in the sample, although NPV occurred at somewhat higher rates...
July 2017: Journal of Studies on Alcohol and Drugs
https://www.readbyqxmd.com/read/28728621/high-flow-heated-humidified-air-via-nasal-cannula-treats-cpap-intolerant-children-with-obstructive-sleep-apnea
#20
Stephen Hawkins, Stephanie Huston, Kristen Campbell, Ann Halbower
STUDY OBJECTIVES: Continuous positive airway pressure (CPAP) is effective but challenging for children with obstructive sleep apnea (OSA). High-flow air via open nasal cannula (HFNC) as treatment in children remains controversial. We report the efficacy of HFNC in children with OSA and CPAP intolerance, a titration protocol, and a discussion of potential mechanisms. METHODS: Patients aged 1 to 18 years with OSA (defined by obstructive apnea-hypopnea index [OAHI] greater than 1 event/h) and CPAP intolerance were enrolled...
July 14, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
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