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https://www.readbyqxmd.com/read/29158473/notch1-is-a-mechanosensor-in-adult-arteries
#1
Julia J Mack, Thiago S Mosqueiro, Brian J Archer, William M Jones, Hannah Sunshine, Guido C Faas, Anais Briot, Raquel L Aragón, Trent Su, Milagros C Romay, Austin I McDonald, Cheng-Hsiang Kuo, Carlos O Lizama, Timothy F Lane, Ann C Zovein, Yun Fang, Elizabeth J Tarling, Thomas Q de Aguiar Vallim, Mohamad Navab, Alan M Fogelman, Louis S Bouchard, M Luisa Iruela-Arispe
Endothelial cells transduce mechanical forces from blood flow into intracellular signals required for vascular homeostasis. Here we show that endothelial NOTCH1 is responsive to shear stress, and is necessary for the maintenance of junctional integrity, cell elongation, and suppression of proliferation, phenotypes induced by laminar shear stress. NOTCH1 receptor localizes downstream of flow and canonical NOTCH signaling scales with the magnitude of fluid shear stress. Reduction of NOTCH1 destabilizes cellular junctions and triggers endothelial proliferation...
November 20, 2017: Nature Communications
https://www.readbyqxmd.com/read/29156004/obesity-modulates-the-association-between-systolic-blood-pressure-and-albuminuria
#2
James Fotheringham, Bisher Kawar, William McKane, Timothy Ellam
Background: Obesity is associated with albuminuria and incident kidney disease. Increased vulnerability of the glomerular microcirculation to elevated systemic blood pressure is postulated to contribute to adverse effects of obesity on the kidney. We therefore hypothesized that obesity would modulate the association between systolic blood pressure (sBP) and albuminuria. Methods: The relationship between obesity and albuminuria [fractional albumin excretion (FE alb ) or albumin:creatinine ratio (ACR)] was modelled using linear/logistic regression in the US National Health and Nutrition Examination Survey 1999-2010 cohorts ( N  = 23 710)...
May 30, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29154527/water-quality-survey-of-splash-pads-after-a-waterborne-salmonellosis-outbreak-tennessee-2014
#3
Joshua L Clayton, Judy Manners, Susan Miller, Craig Shepherd, John R Dunn, William Schaffner, Timothy F Jones
Waterborne outbreaks of salmonellosis are uncommon. The Tennessee Department of Health investigated a salmonellosis outbreak of 10 cases with the only common risk factor being exposure to a single splash pad. Risks included water splashed in the face at the splash pad and no free residual chlorine in the water system. We surveyed water quality and patron behaviors at splash pads statewide. Of the 29 splash pads participating in the water quality survey, 24 (83%) used a recirculating water system. Of the 24, 5 (21%) water samples were tested by polymerase chain reaction and found to be positive for E...
June 2017: Journal of Environmental Health
https://www.readbyqxmd.com/read/29154521/cryptosporidiosis-outbreak-associated-with-a-single-hotel
#4
Mary-Margaret A Fill, Jennifer Lloyd, Tamal Chakraverty, David Sweat, Judy Manners, Katie Garman, Michele C Hlavsa, Dawn M Roellig, John R Dunn, William Schaffner, Timothy F Jones
We investigated a gastrointestinal illness cluster among persons who attended a baseball tournament (>200 teams) during July 2015. We interviewed representatives of 19 teams; illness was reported among only the 9 (47%) teams that stayed at Hotel A (p < .01). We identified 55 primary cases. A case-control study demonstrated that pool exposure at Hotel A was significantly associated with illness (odds ratio: 7.3; 95% confidence interval: 3.6, 15.2). Eight out of nine (89%) stool specimens tested were positive for Cryptosporidium, with C...
May 2017: Journal of Environmental Health
https://www.readbyqxmd.com/read/29153266/ebola-virus-disease-an-update-on-post-exposure-prophylaxis
#5
REVIEW
William A Fischer, Pauline Vetter, Daniel G Bausch, Timothy Burgess, Richard T Davey, Robert Fowler, Frederick G Hayden, Peter B Jahrling, Andre C Kalil, Douglas L Mayers, Aneesh K Mehta, Timothy M Uyeki, Michael Jacobs
The massive outbreak of Ebola virus disease in west Africa between 2013 and 2016 resulted in intense efforts to evaluate the efficacy of several specific countermeasures developed through years of preclinical work, including the first clinical trials for therapeutics and vaccines. In this Review, we discuss how the experience and data generated from that outbreak have helped to advance the understanding of the use of these countermeasures for post-exposure prophylaxis against Ebola virus infection. In future outbreaks, post-exposure prophylaxis could play an important part in reducing community transmission of Ebola virus by providing more immediate protection than does immunisation as well as providing additional protection for health-care workers who are inadvertently exposed over the course of their work...
November 15, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/29152090/gynostemma-pentaphyllum-saponins-attenuate-inflammation-in-vitro-and-in-vivo-by-inhibition-of-nf-%C3%AE%C2%BAb-and-stat3-signaling
#6
Wing-Yan Wong, Magnolia Muk-Lan Lee, Brandon Dow Chan, Victor Wan-San Ma, Wenchun Zhang, Timothy Tak-Chun Yip, Wing-Tak Wong, William Chi-Shing Tai
Recent advances in the development of anti-inflammatory agents have improved their therapeutic outcome in inflammatory bowel disease (IBD), however, the presence of side effects and limited effectiveness hinder their widespread use. Therefore, novel compounds with strong anti-inflammatory efficacy are still required. In this study, we investigated the anti-inflammatory effect and potential mechanisms of Gynostemma pentaphyllum (Thunb.) Makino saponins (GpS), a major component of the herbal medicine widely used in Asian countries...
October 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/29146959/methanogenesis-in-oxygenated-soils-is-a-substantial-fraction-of-wetland-methane-emissions
#7
Jordan C Angle, Timothy H Morin, Lindsey M Solden, Adrienne B Narrowe, Garrett J Smith, Mikayla A Borton, Camilo Rey-Sanchez, Rebecca A Daly, Golnazalsdat Mirfenderesgi, David W Hoyt, William J Riley, Christopher S Miller, Gil Bohrer, Kelly C Wrighton
The current paradigm, widely incorporated in soil biogeochemical models, is that microbial methanogenesis can only occur in anoxic habitats. In contrast, here we show clear geochemical and biological evidence for methane production in well-oxygenated soils of a freshwater wetland. A comparison of oxic to anoxic soils reveal up to ten times greater methane production and nine times more methanogenesis activity in oxygenated soils. Metagenomic and metatranscriptomic sequencing recover the first near-complete genomes for a novel methanogen species, and show acetoclastic production from this organism was the dominant methanogenesis pathway in oxygenated soils...
November 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/29146853/genome-sequences-of-four-subcluster-l2-mycobacterium-phages-finemlucis-miley16-wilder-and-zakai
#8
Christopher D Herren, Alexandra Peister, Timothy S Breton, Maggie S Hill, Marcy S Anderson, Adeline W Chang, Sydney B Klein, Mackenzie M Thornton, Stacy J Vars, Kasey E Wagner, Paige L Wiebe, Thomas G Williams, Coraima P Yanez, Jasanta M Ackles, Darius Artis, Ryan J Brazier, Ronald J Bryant, Kerel O Callwood, Isaiah H Carter, Cameron L DeBose, Christian D Edwards, Isaiah C Ezemba, Renshal R Joaquin, Zakai M Meghoo-Peddie, Ziha G Meghoo-Peddie, Ryan W Moore, Christopher E Smith, Adam J Turner, Raymond L Vorters, Jeffrey J Wider, Liesel L Krout, Mia S Comis, Madison J Davick, Eli E Michaud, Bailey E Shevenell, Sarah E Stanley, Chelsey I Frank, Jacob R Montgomery, Lawrence S Blumer, Jean A Doty, Martha Smith-Caldas, Welkin H Pope, Steven G Cresawn, Daniel A Russell, Rebecca A Garlena, Deborah Jacobs-Sera, Graham F Hatfull
Four subcluster L2 mycobacteriophages, Finemlucis, Miley16, Wilder, and Zakai, that infect Mycobacterium smegmatis mc(2)155 were isolated. The four phages are closely related to each other and code for 12 to 14 tRNAs and 130 to 132 putative protein-coding genes, including tyrosine integrases, cro, immunity repressors, and excise genes involved in the establishment of lysogeny.
November 16, 2017: Genome Announcements
https://www.readbyqxmd.com/read/29141220/phosphorylation-and-ubiquitination-regulate-protein-phosphatase-5-activity-and-its-prosurvival-role-in-kidney-cancer
#9
Natela Dushukyan, Diana M Dunn, Rebecca A Sager, Mark R Woodford, David R Loiselle, Michael Daneshvar, Alexander J Baker-Williams, John D Chisholm, Andrew W Truman, Cara K Vaughan, Timothy A Haystead, Gennady Bratslavsky, Dimitra Bourboulia, Mehdi Mollapour
The serine/threonine protein phosphatase 5 (PP5) regulates multiple cellular signaling networks. A number of cellular factors, including heat shock protein 90 (Hsp90), promote the activation of PP5. However, it is unclear whether post-translational modifications also influence PP5 phosphatase activity. Here, we show an "on/off switch" mechanism for PP5 regulation. The casein kinase 1δ (CK1δ) phosphorylates T362 in the catalytic domain of PP5, which activates and enhances phosphatase activity independent of Hsp90...
November 14, 2017: Cell Reports
https://www.readbyqxmd.com/read/29138293/icare-acs-improving-care-processes-for-patients-with-suspected-acute-coronary-syndrome-a-study-of-cross-system-implementation-of-a-national-clinical-pathway
#10
Martin P Than, John W Pickering, Jeremy M Dryden, Sally J Lord, S Andrew Aitken, Sally J Aldous, Kate E Allan, Michael W Ardagh, John W N Bonning, Rosie Callender, Laura R E Chapman, Jonathan P Christiansen, Andre P J Cromhout, Louise Cullen, Joanne M Deely, Gerard P Devlin, Katherine A Ferrier, Christopher M Florkowski, Christopher M A Frampton, Peter M George, Gregory J Hamilton, Allan S Jaffe, Andrew J Kerr, G Luke Larkin, Richard M Makower, Timothy J E Matthews, William A Parsonage, W Frank Peacock, Bradley F Peckler, Nicholaas C van Pelt, Louise Poynton, A Mark Richards, Anthony G Scott, Mark B Simmonds, David Smyth, Oliver P Thomas, Andrew C Y To, Stephen A Du Toit, Richard W Troughton, Kim M Yates
BACKGROUND : Efforts to safely reduce length of stay for emergency department patients with symptoms suggestive of acute coronary syndrome (ACS) have had mixed success. Few system-wide efforts affecting multiple hospital emergency departments have ever been evaluated. We evaluated the effectiveness of a nationwide implementation of clinical pathways for potential ACS in disparate hospitals. METHODS : This was a multicenter pragmatic stepped-wedge before-and-after trial in 7 New Zealand acute care hospitals with 31 332 patients investigated for suspected ACS with serial troponin measurements...
November 14, 2017: Circulation
https://www.readbyqxmd.com/read/29134342/an-introduction-and-overview-of-machine-learning-in-neurosurgical-care
#11
REVIEW
Joeky T Senders, Mark M Zaki, Aditya V Karhade, Bliss Chang, William B Gormley, Marike L Broekman, Timothy R Smith, Omar Arnaout
BACKGROUND: Machine learning (ML) is a branch of artificial intelligence that allows computers to learn from large complex datasets without being explicitly programmed. Although ML is already widely manifest in our daily lives in various forms, the considerable potential of ML has yet to find its way into mainstream medical research and day-to-day clinical care. The complex diagnostic and therapeutic modalities used in neurosurgery provide a vast amount of data that is ideally suited for ML models...
November 13, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29133551/copper-ions-and-coordination-complexes-as-novel-carbapenem-adjuvants
#12
Karrera Y Djoko, Maud E S Achard, Minh-Duy Phan, Alvin W Lo, Manfredi Miraula, Sasiprapa Prombhul, Steven J Hancock, Kate M Peters, Hanna Sidjabat, Patrick N Harris, Nataša Mitić, Timothy R Walsh, Gregory J Anderson, William M Shafer, David L Paterson, Gerhard Schenk, Alastair G McEwan, Mark A Schembri
Carbapenem-resistant Enterobacteriaceae are an urgent threat to global human health. These organisms produce β-lactamases with carbapenemase activity, such as the metallo-β-lactamase NDM-1, which is notable due to its association with mobile genetic elements and the lack of a clinically useful inhibitor. Here we examined the ability of copper to inhibit the activity of NDM-1 and explored the potential of a copper coordination complex as a mechanism to efficiently deliver copper as an adjuvant in clinical therapeutics...
November 13, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29133263/prospective-evaluation-of-pasireotide-in-patients-undergoing-pancreaticoduodenectomy-the-washington-university-experience
#13
Ismael Dominguez-Rosado, Ryan C Fields, Cheryl A Woolsey, Gregory Williams, Timothy A Horwedel, J Bart Rose, Chet W Hammill, Maria B Doyle, William C Chapman, Steven M Strasberg, William G Hawkins, Dominic E Sanford
BACKGROUND: Pasireotide is a newer generation somatostatin analogue which led to a significant reduction in pancreatic fistula after pancreatectomy in a single-center randomized controlled trial. We sought to determine if pasireotide reduces the incidence of pancreatic fistula and other complications following pancreaticoduodenectomy at our high volume center. STUDY DESIGN: All patients between April 2011 and January 2017 undergoing pancreaticoduodenectomy were prospectively followed and their complications graded using the Modified Accordion Grading System (MAGS) in our institutional complications database...
November 10, 2017: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/29127655/the-endoscopic-endonasal-approach-is-not-superior-to-the-microscopic-transcranial-approach-for-anterior-skull-base-meningiomas-a-meta-analysis
#14
Ivo S Muskens, Vanessa Briceno, Tom L Ouwehand, Joseph P Castlen, William B Gormley, Linda S Aglio, Amir H Zamanipoor Najafabadi, Wouter R van Furth, Timothy R Smith, Rania A Mekary, Marike L D Broekman
OBJECT: In the past decade, the endonasal transsphenoidal approach (eTSA) has become an alternative to the microsurgical transcranial approach (mTCA) for tuberculum sellae meningiomas (TSMs) and olfactory groove meningiomas (OGMs). The aim of this meta-analysis was to evaluate which approach offered the best surgical outcomes. METHODS: A systematic review of the literature from 2004 and meta-analysis were conducted in accordance with the PRISMA guidelines. Pooled incidence was calculated for gross total resection (GTR), visual improvement, cerebrospinal fluid (CSF) leak, intraoperative arterial injury, and mortality, comparing eTSA and mTCA, with p-interaction values...
November 10, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29126934/neuropsychological-functioning-in-military-pesticide-applicators-from-the-gulf-war-effects-on-information-processing-speed-attention-and-visual-memory
#15
Kimberly Sullivan, Maxine Krengel, William Bradford, Callie Stone, Terri Ann Thompson, Timothy Heeren, Roberta F White
1991 Gulf War (GW) veterans continue to experience debilitating cognitive and mood problems more than two decades following their return from deployment. Suspected causes for these cognitive complaints include additive and/or synergistic effects of the varying combinations of exposures to chemicals in theater, including pesticides and pyridostigmine bromide (PB) pills. This study was undertaken to address one of the key recommendations of the US Department of Defense Environmental Exposure Report on Pesticides, which was to conduct an epidemiological study to further evaluate the role of neurotoxicant exposures in the expression of central nervous system symptoms reported by GW veterans...
November 7, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/29126725/conformationally-rigid-derivatives-of-way-267-464-synthesis-and-pharmacology-at-the-human-oxytocin-and-vasopressin-1a-receptors
#16
William T Jorgensen, Damien W Gulliver, Timothy A Katte, Eryn L Werry, Tristan A Reekie, Mark Connor, Michael Kassiou
WAY-267,464 (1) and twelve conformationally rigid analogues (3a-f-4a-f) were synthesised, characterised and evaluated in cellular assays with the aim of systematically exploring interactions with the oxytocin receptor (OTR). Each analogue was evaluated in radioligand binding displacement assays at both human OTR and arginine vasopressin 1a receptors (V1aR). Physiological characterisation was determined by whole cell IP1 accumulation assays on stably transfected human embryonic kidney (HEK) cells. Incorporation of the rigid, optionally substituted benzene ring abolished OTR activity and diminished V1aR pharmacology when compared to 1...
October 23, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29124420/mixed-method-evaluation-of-social-media-based-tools-and-traditional-strategies-to-recruit-high-risk-and-hard-to-reach-populations-into-an-hiv-prevention-intervention-study
#17
Sarah J Iribarren, Alhasan Ghazzawi, Alan Z Sheinfil, Timothy Frasca, William Brown, Javier Lopez-Rios, Christine T Rael, Iván C Balán, Raynier Crespo, Curtis Dolezal, Rebecca Giguere, Alex Carballo-Diéguez
Men who have sex with men and transgender women are hard-to-reach populations for research. Social media-based tools may overcome certain barriers in accessing these groups and are being tested in an ongoing study exploring HIV home-test kit use to reduce risk behavior. We analyzed pre-screening responses about how volunteers learned about the study (n = 896) and demographic data from eligible participants who came for an initial study visit (n = 216) to determine the strengths and weaknesses of recruitment strategies...
November 9, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/29122931/outcome-of-left-atrial-appendage-occlusion-in-high-risk-patients
#18
Ahmed Masoud, Stefano Bartoletti, Timothy Fairbairn, Ayush Khurana, Periaswamy Velavan, William Lindsay Morrison, Afshin Khalatbari, Suneil Aggarwal, Nikhill Sharma, Paulus Kirchhof, Dhiraj Gupta
OBJECTIVE: Percutaneous left atrial appendage (LAA) occlusion can be an interventional alternative to oral anticoagulation for stroke prevention in patients with atrial fibrillation. METHODS: We delivered LAA occlusion therapy using a standardised approach to patient referral, multidisciplinary team assessment, implant criteria, imaging and follow-up. We analysed patient characteristics, efficacy and safety of the implant procedure, and 12-month outcomes. RESULTS: Of 143 referrals from October 2014 to December 2016, 83 patients (age 76±8 years, 32...
November 9, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29119473/preference-of-oral-tenofovir-disoproxil-fumarate-emtricitabine-versus-rectal-tenofovir-reduced-glycerin-1-gel-regimens-for-hiv-prevention-among-cisgender-men-and-transgender-women-who-engage-in-receptive-anal-intercourse-with-men
#19
Alex Carballo-Diéguez, Rebecca Giguere, Curtis Dolezal, Cheng-Shiun Leu, Iván C Balán, William Brown, Christine Rael, Barbra A Richardson, Jeanna M Piper, Linda-Gail Bekker, Suwat Chariyalertsak, Anupong Chitwarakorn, Pedro Gonzales, Timothy H Holtz, Albert Liu, Kenneth H Mayer, Carmen D Zorrilla, Javier R Lama, Ian McGowan, Ross D Cranston
Oral pre-exposure prophylaxis (PrEP) can prevent HIV transmission. Yet, some may prefer not to take systemic daily medication. MTN-017 was a 3-period, phase 2 safety and acceptability study of microbicide gel applied rectally either daily or before and after receptive anal intercourse (RAI), compared to daily oral tablet. At baseline, cisgender men and transgender women who reported RAI (N = 187) rated the daily oral regimen higher in overall liking, ease of use, and likelihood of future use than the gel regimens...
November 8, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/29116224/comparison-of-transcriptomic-platforms-for-analysis-of-whole-blood-from-ebola-infected-cynomolgus-macaques
#20
Emily Speranza, Louis A Altamura, Kirsten Kulcsar, Sandra L Bixler, Cynthia A Rossi, Randal J Schoepp, Elyse Nagle, William Aguilar, Christina E Douglas, Korey L Delp, Timothy D Minogue, Gustavo Palacios, Arthur J Goff, John H Connor
Ebola virus disease (EVD) is a serious illness with mortality rates of 20-90% in various outbreaks. EVD is characterized by robust virus replication and strong host inflammatory response. Analyzing host immune responses has increasingly involved multimodal approaches including transcriptomics to profile gene expression. We studied cynomolgus macaques exposed to Ebola virus Makona via different routes with the intent of comparing RNA-Seq to a NanoString nCounter codeset targeting 769 non-human primate (NHP) genes...
November 7, 2017: Scientific Reports
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