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steven gross

Cornelia Tremblay, Shi-Joon Yoo, Luc Mertens, Mike Seed, Frederic Jacques, Cameron Slorach, Rachel Vanderlaan, Steven Greenway, Christopher Caldarone, John Coles, Lars Grosse-Wortmann
BACKGROUND: Two different surgical techniques are used to repair anomalous pulmonary venous connection or pulmonary vein (PV) stenosis: the classic repair (CR) and the sutureless repair (SR). The purpose of this study was to compare the prevalence of PV stenosis between the two surgical approaches. METHODS: Patients were prospectively recruited irrespective of symptoms or previous imaging findings. Cardiac magnetic resonance imaging and echocardiography were performed in a blinded fashion on the same day...
February 23, 2018: Annals of Thoracic Surgery
Sissy E Wamaitha, Kathy K Niakan
Understanding the progression of early human embryonic development prior to implantation is of fundamental biological importance. Greater insights into early developmental events may lead to clinical improvements, not only via the establishment of novel stem cell models with increased potential or more physiological relevance, but also by uncovering some underlying causes of infertility, miscarriages, and developmental disorders. The majority of human embryos available for study are those donated to research once they are surplus to family building following in vitro fertilization, though in some countries it is also possible to create embryos using donated gametes...
2018: Current Topics in Developmental Biology
David R Anderson, Michael Dunbar, John Murnaghan, Susan R Kahn, Peter Gross, Michael Forsythe, Stephane Pelet, William Fisher, Etienne Belzile, Sean Dolan, Mark Crowther, Eric Bohm, Steven J MacDonald, Wade Gofton, Paul Kim, David Zukor, Susan Pleasance, Pantelis Andreou, Steve Doucette, Chris Theriault, Abongnwen Abianui, Marc Carrier, Michael J Kovacs, Marc A Rodger, Doug Coyle, Philip S Wells, Pascal-Andre Vendittoli
BACKGROUND: Clinical trials and meta-analyses have suggested that aspirin may be effective for the prevention of venous thromboembolism (proximal deep-vein thrombosis or pulmonary embolism) after total hip or total knee arthroplasty, but comparisons with direct oral anticoagulants are lacking for prophylaxis beyond hospital discharge. METHODS: We performed a multicenter, double-blind, randomized, controlled trial involving patients who were undergoing total hip or knee arthroplasty...
February 22, 2018: New England Journal of Medicine
Nima Madani, John S Kimball, Ashley P Ballantyne, David L R Affleck, Peter M van Bodegom, Peter B Reich, Jens Kattge, Anna Sala, Mona Nazeri, Matthew O Jones, Maosheng Zhao, Steven W Running
Plant traits are both responsive to local climate and strong predictors of primary productivity. We hypothesized that future climate change might promote a shift in global plant traits resulting in changes in Gross Primary Productivity (GPP). We characterized the relationship between key plant traits, namely Specific Leaf Area (SLA), height, and seed mass, and local climate and primary productivity. We found that by 2070, tropical and arid ecosystems will be more suitable for plants with relatively lower canopy height, SLA and seed mass, while far northern latitudes will favor woody and taller plants than at present...
February 12, 2018: Scientific Reports
Joseph M Muretta, Babu J N Reddy, Guido Scarabelli, Alex F Thompson, Shashank Jariwala, Jennifer Major, Monica Venere, Jeremy N Rich, Belinda Willard, David D Thomas, Jason Stumpff, Barry J Grant, Steven P Gross, Steven S Rosenfeld
Numerous posttranslational modifications have been described in kinesins, but their consequences on motor mechanics are largely unknown. We investigated one of these-acetylation of lysine 146 in Eg5-by creating an acetylation mimetic lysine to glutamine substitution (K146Q). Lysine 146 is located in the α2 helix of the motor domain, where it makes an ionic bond with aspartate 91 on the neighboring α1 helix. Molecular dynamics simulations predict that disrupting this bond enhances catalytic site-neck linker coupling...
February 5, 2018: Proceedings of the National Academy of Sciences of the United States of America
Mark Chan, Matthew Wong, Ronnie Leung, Steven Cheung, Oliver Blanck
BACKGROUND: To derive and exploit the optimal prescription isodose level (PIL) in inverse optimization of volumetric modulated arc radiotherapy (VMAT) as a potential approach to dose de-escalation in stereotactic body radiotherapy for non-small cell lung carcinomas (NSCLC). METHODS: For ten patients, inverse Monte Carlo dose optimization was performed to cover 95% PTV by varying prescription isodose lines (PIL) at 60 to 80% and reference 85%. Subsequently, these were re-normalized to the median gross tumor volume dose (GTV-based prescription) to assess the impacts of PTV and normal tissue dose reduction...
February 9, 2018: Radiation Oncology
Steven H Dayan, Joel Schlessinger, Kenneth Beer, Lisa M Donofrio, Derek H Jones, Shannon Humphrey, Jean Carruthers, Paul F Lizzul, Todd M Gross, Frederick C Beddingfield, Christine Somogyi
Background: ATX-101 (deoxycholic acid injection) is the only injectable drug approved for submental fat (SMF) reduction. In the phase 3 REFINE trials, adults with moderate or severe SMF who were dissatisfied with the appearance of their face/chin were eligible to receive up to 6 treatment sessions with ATX-101 (2 mg/cm2) or placebo. Primary and secondary endpoints, evaluated at 12 weeks after last treatment, significantly favored ATX-101 supporting its efficacy for reducing SMF and the psychological impact of SMF, and increasing satisfaction with the appearance of the face/chin...
February 1, 2018: Aesthetic Surgery Journal
Kendal E Harr, Kristina Deak, Steven A Murawski, Drury R Reavill, Ryan A Takeshita
BACKGROUND: The Deepwater Horizon (DWH) oil spill in 2010 released millions of barrels of crude oil into the northern Gulf of Mexico, exposing numerous species of animals to the toxic components of oil. A comprehensive assessment of morbidity and mortality caused by DWH oil exposure was undertaken by the DWH Natural Resource Damage Trustees to characterize ecosystem damages. OBJECTIVES: This study aimed to characterize normal hematologic RIs in red drum fish with blood cell descriptions, and to demonstrate the importance of identifying and removing outliers when generating RI...
January 17, 2018: Veterinary Clinical Pathology
Jared P Bergman, Matthew J Bovyn, Florence F Doval, Abhimanyu Sharma, Manasa V Gudheti, Steven P Gross, Jun F Allard, Michael D Vershinin
The eukaryotic cell's microtubule cytoskeleton is a complex 3D filament network. Microtubules cross at a wide variety of separation distances and angles. Prior studies in vivo and in vitro suggest that cargo transport is affected by intersection geometry. However, geometric complexity is not yet widely appreciated as a regulatory factor in its own right, and mechanisms that underlie this mode of regulation are not well understood. We have used our recently reported 3D microtubule manipulation system to build filament crossings de novo in a purified in vitro environment and used them to assay kinesin-1-driven model cargo navigation...
January 2, 2018: Proceedings of the National Academy of Sciences of the United States of America
Steven Shamah, Judy Schneider, Burton I Korelitz
BACKGROUND AND AIMS: Ulcerative colitis (UC) patients with progression of their disease despite optimized medical therapy may warrant "curative" proctocolectomy with end ileostomy or ileo-anal pouch (IPAA) anastomosis. The aim of our study was to assess the incidence of later recurrent ileitis that lead to altering the initial diagnosis to Crohn's disease (CD). METHODS: A retrospective analysis was conducted on the inflammatory bowel disease database at Lenox Hill Hospital...
December 28, 2017: Digestive Diseases and Sciences
Daniel R Hogan, Gretchen A Stevens, Ahmad Reza Hosseinpoor, Ties Boerma
BACKGROUND: Achieving universal health coverage, including quality essential service coverage and financial protection for all, is target 3.8 of the Sustainable Development Goals (SDG). As a result, an index of essential health service coverage indicators was selected by the UN as SDG indicator 3.8.1. We have developed an index for measuring SDG 3.8.1, describe methods for compiling the index, and report baseline results for 2015. METHODS: 16 tracer indicators were selected for the index, which included four from within each of the categories of reproductive, maternal, newborn, and child health; infectious disease; non-communicable diseases; and service capacity and access...
December 13, 2017: Lancet Global Health
Yong Zhang, Hong Liu, Wei Li, Zhengang Zhang, Shiyang Zhang, Maria E Teves, Courtney Stevens, James A Foster, Gregory E Campbell, Jolene J Windle, Rex A Hess, Gregory J Pazour, Zhibing Zhang
Intraflagellar transport (IFT) is a conserved mechanism essential for the assembly and maintenance of most eukaryotic cilia and flagella. However, little is known about its role in sperm flagella formation and male fertility. IFT140 is a component of IFT-A complex. In mouse, it is highly expressed in the testis. Ift140 gene was inactivated specifically in mouse spermatocytes/spermatids. The mutant mice did not show any gross abnormalities, but all were infertile associated with significantly reduced sperm number and motility...
December 13, 2017: Cytoskeleton
Ethan E Butler, Abhirup Datta, Habacuc Flores-Moreno, Ming Chen, Kirk R Wythers, Farideh Fazayeli, Arindam Banerjee, Owen K Atkin, Jens Kattge, Bernard Amiaud, Benjamin Blonder, Gerhard Boenisch, Ben Bond-Lamberty, Kerry A Brown, Chaeho Byun, Giandiego Campetella, Bruno E L Cerabolini, Johannes H C Cornelissen, Joseph M Craine, Dylan Craven, Franciska T de Vries, Sandra Díaz, Tomas F Domingues, Estelle Forey, Andrés González-Melo, Nicolas Gross, Wenxuan Han, Wesley N Hattingh, Thomas Hickler, Steven Jansen, Koen Kramer, Nathan J B Kraft, Hiroko Kurokawa, Daniel C Laughlin, Patrick Meir, Vanessa Minden, Ülo Niinemets, Yusuke Onoda, Josep Peñuelas, Quentin Read, Lawren Sack, Brandon Schamp, Nadejda A Soudzilovskaia, Marko J Spasojevic, Enio Sosinski, Peter E Thornton, Fernando Valladares, Peter M van Bodegom, Mathew Williams, Christian Wirth, Peter B Reich
Our ability to understand and predict the response of ecosystems to a changing environment depends on quantifying vegetation functional diversity. However, representing this diversity at the global scale is challenging. Typically, in Earth system models, characterization of plant diversity has been limited to grouping related species into plant functional types (PFTs), with all trait variation in a PFT collapsed into a single mean value that is applied globally. Using the largest global plant trait database and state of the art Bayesian modeling, we created fine-grained global maps of plant trait distributions that can be applied to Earth system models...
December 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
Philip Anthony Sutera, Mark E Bernard, Beant S Gill, Kamran K Harper, Kimmen Quan, Nathan Bahary, Steven A Burton, Herbert Zeh, Dwight E Heron
Background/introduction: Early reports of stereotactic body radiation therapy (SBRT) for pancreatic ductal adenocarcinoma (PDAC) used single fraction, but eventually shifted to multifraction regimens. We conducted a single institution review of our patients treated with single- or multifraction SBRT to determine whether any outcome differences existed. Methods and materials: Patients treated with SBRT in any setting for PDAC at our facility were included, from 2004 to 2014...
2017: Frontiers in Oncology
Salman A Eraj, Mona K Jomaa, Crosby D Rock, Abdallah S R Mohamed, Blaine D Smith, Joshua B Smith, Theodora Browne, Luke C Cooksey, Bowman Williams, Brandi Temple, Kathryn E Preston, Jeremy M Aymard, Neil D Gross, Randal S Weber, Amy C Hessel, Renata Ferrarotto, Jack Phan, Erich M Sturgis, Ehab Y Hanna, Steven J Frank, William H Morrison, Ryan P Goepfert, Stephen Y Lai, David I Rosenthal, Tito R Mendoza, Charles S Cleeland, Kate A Hutcheson, Clifton D Fuller, Adam S Garden, G Brandon Gunn
In the original publication [1] the name of author Jeremy M. Aymard was spelled wrong. The original article was updated to rectify this error.
November 23, 2017: Radiation Oncology
Kit-Yi Leung, Yun Jin Pai, Qiuying Chen, Chloe Santos, Enrica Calvani, Sonia Sudiwala, Dawn Savery, Markus Ralser, Steven S Gross, Andrew J Copp, Nicholas D E Greene
Abnormal folate one-carbon metabolism (FOCM) is implicated in neural tube defects (NTDs), severe malformations of the nervous system. MTHFR mediates unidirectional transfer of methyl groups from the folate cycle to the methionine cycle and, therefore, represents a key nexus in partitioning one-carbon units between FOCM functional outputs. Methionine cycle inhibitors prevent neural tube closure in mouse embryos. Similarly, the inability to use glycine as a one-carbon donor to the folate cycle causes NTDs in glycine decarboxylase (Gldc)-deficient embryos...
November 14, 2017: Cell Reports
Tal Nuriel, Sergio L Angulo, Usman Khan, Archana Ashok, Qiuying Chen, Helen Y Figueroa, Sheina Emrani, Li Liu, Mathieu Herman, Geoffrey Barrett, Valerie Savage, Luna Buitrago, Efrain Cepeda-Prado, Christine Fung, Eliana Goldberg, Steven S Gross, S Abid Hussaini, Herman Moreno, Scott A Small, Karen E Duff
The ε4 allele of apolipoprotein E (APOE) is the dominant genetic risk factor for late-onset Alzheimer's disease (AD). However, the reason APOE4 is associated with increased AD risk remains a source of debate. Neuronal hyperactivity is an early phenotype in both AD mouse models and in human AD, which may play a direct role in the pathogenesis of the disease. Here, we have identified an APOE4-associated hyperactivity phenotype in the brains of aged APOE mice using four complimentary techniques-fMRI, in vitro electrophysiology, in vivo electrophysiology, and metabolomics-with the most prominent hyperactivity occurring in the entorhinal cortex...
November 13, 2017: Nature Communications
Anussara Prayongrat, Cai Xu, Heng Li, Steven H Lin
Purpose: Intensity-modulated proton therapy (IMPT) is an emerging advanced radiation technique. Although dosimetric studies demonstrate the superiority of IMPT for improving target conformity and reducing unnecessary dose to critical normal tissues, clinical experience is limited. We aim to describe our preliminary experience implementing IMPT concurrently with chemotherapy in esophageal carcinoma (EC). Methods and materials: From May 2011 through February 2016, 19 patients with EC (median age, 73 years) were treated with IMPT using 180 to 250 MV protons with a median dose of 50...
July 2017: Advances in Radiation Oncology
Rosanne J H C G Beijers, Stephanie M D Huysmans, Coby van de Bool, Boris R M Kingma, Lex B Verdijk, Luc J C van Loon, Steven J R Meex, Harry R Gosker, Annemie M W J Schols
BACKGROUND & AIMS: Many COPD patients have a reduced exercise capacity and mechanical efficiency and are at increased cardiometabolic risk. This study aimed to assess acute and 7-days effects of dietary nitrate on mechanical efficiency, exercise performance and cardiac biomarkers in patients with COPD. METHODS: This double-blind, randomized cross-over placebo controlled trial included 20 mild-to-moderate COPD patients (66.6 ± 7.5 years) with moderate exercise impairments and decreased mechanical efficiency, normal BMI (26 ± 3 kg/m(2)) but high prevalence of abdominal obesity (83...
October 31, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
Wendy L Gross, Lebron Cooper, Steven Boggs, Barbara Gold
The anesthesia market continues to undergo disruption. Financial margins are shrinking, and buyers are demanding that anesthesia services be provided in an efficient, low-cost manner. To help anesthesiologists analyze their market, Drucker and Porter's framework of buyers, suppliers, quality, barriers to entry, substitution, and strategic priorities allows for a structured analysis. Once this analysis is completed, anesthesiologists must articulate their value to other medical professionals and to hospitals...
December 2017: Anesthesiology Clinics
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