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timothy william

Hedieh Alavi Tamaddoni, William W Roberts, Alexander P Duryea, Charles A Cain, Timothy L Hall
Cavitation plays a significant role in the efficacy of stone comminution during shockwave lithotripsy (SWL). Although cavitation on the surface of urinary stones helps to improve fragmentation, cavitation bubbles along the propagation path may shield or block subsequent shockwaves, and potentially induce collateral tissue damage. Previous in vitro work has shown that applying low amplitude acoustic waves after each shockwave can force bubbles to consolidate and enhance SWL efficacy. In this study, the feasibility of applying acoustic bubble coalescence (ABC) in vivo was tested...
October 20, 2016: Journal of Endourology
Gregory A Schmidt, Timothy D Girard, John P Kress, Peter E Morris, Daniel R Ouellette, Waleed Alhazzani, Suzanne M Burns, Scott K Epstein, Andres Esteban, Eddy Fan, Miquel Ferrer, Gilles L Fraser, Michelle Gong, Catherine Hough, Sangeeta Mehta, Rahul Nanchal, Sheena Patel, Amy J Pawlik, Curtis N Sessler, Thomas Strøm, William Schweickert, Kevin C Wilson, Jonathon D Truwit
BACKGROUND: This clinical practice guideline addresses six questions related to liberation from mechanical ventilation in critically ill adults. It is the result of a collaborative effort between the American Thoracic Society (ATS) and American College of Chest Physicians (CHEST). METHODS: A multi-disciplinary panel posed six clinical questions in a Population, Intervention, Comparator and Outcomes (PICO) format. A comprehensive literature search and evidence synthesis was performed for each question, which included appraising the certainty in the evidence (i...
October 20, 2016: American Journal of Respiratory and Critical Care Medicine
Timothy D Girard, Waleed Alhazzani, John P Kress, Daniel R Ouellette, Gregory A Schmidt, Jonathon D Truwit, Suzanne M Burns, Scott K Epstein, Andres Esteban, Eddy Fan, Miquel Ferrer, Gilles L Fraser, Michelle Gong, Catherine Hough, Sangeeta Mehta, Rahul Nanchal, Sheena Patel, Amy J Pawlik, Curtis N Sessler, Thomas Strøm, William Schweickert, Kevin C Wilson, Peter E Morris
BACKGROUND: Interventions that lead to earlier liberation from mechanical ventilation can improve patient outcomes. This guideline, a collaborative effort between the American Thoracic Society (ATS) and the American College of Chest Physicians (CHEST), provides evidence-based recommendations to optimize liberation from mechanical ventilation in critically ill adults. METHODS: Two methodologists performed evidence syntheses to summarize available evidence relevant to key questions about liberation from mechanical ventilation...
October 20, 2016: American Journal of Respiratory and Critical Care Medicine
Timothy J Bloom, Julie M Hall, Qinfeng Liu, William C Stagner, Michael L Adams
Objective. To develop a program-level assessment process for a master's of science degree in a pharmaceutical sciences (MSPS) program. Design. Program-level goals were created and mapped to course learning objectives. Embedded assessment tools were created by each course director and used to gather information related to program-level goals. Initial assessment iterations involved a subset of offered courses, and course directors met with the department assessment committee to review the quality of the assessment tools as well as the data collected with them...
September 25, 2016: American Journal of Pharmaceutical Education
Xinyang Liu, Sukryool Kang, William Plishker, George Zaki, Timothy D Kane, Raj Shekhar
The purpose of this work was to develop a clinically viable laparoscopic augmented reality (AR) system employing stereoscopic (3-D) vision, laparoscopic ultrasound (LUS), and electromagnetic (EM) tracking to achieve image registration. We investigated clinically feasible solutions to mount the EM sensors on the 3-D laparoscope and the LUS probe. This led to a solution of integrating an externally attached EM sensor near the imaging tip of the LUS probe, only slightly increasing the overall diameter of the probe...
October 2016: Journal of Medical Imaging
Paul Comfort, Robert Williams, Timothy J Suchomel, Jason P Lake
The aim of this study was to compare load-absorption force-time characteristics of the clean from the knee (CK), power clean from the knee (PCK) and clean pull from the knee (CPK). Ten collegiate athletes (age 27.5 ± 4.2 years; height 180.4 ± 6.7 cm; mass 84.4 ± 7.8 kg), performed three repetitions each of the CK, PCK and CPK with 90% of their 1RM power clean on a force platform. The CK load-absorption duration (0.95 ± 0.35 s) was significantly longer compared to the CPK (0.44 ± 0.15 s; p < 0.001, d = 2...
September 27, 2016: Journal of Strength and Conditioning Research
Oscar K Serrano, Scott Kerwin, William D Payne, Timothy L Pruett
BACKGROUND: The HIV Organ Policy Equity (HOPE) Act allows for transplantation of organs from Human Immunodeficiency virus (HIV) infected individuals (HIV+), provided it is performed under a research protocol. The safety assessment of an organ for transplantation is an essential element of the donation process. The risk for HIV associated opportunistic infections increases as circulating CD4+ lymphocytes decrease to <200 cells/μL; however, the numbers of circulating CD4+ cells in the HIV-negative (HIV-) brain dead donor (BDD) is not known...
September 29, 2016: Transplantation
Michelle K Haas, Kristen Dalton, Bryan C Knepper, Sarah A Stella, Lilia Cervantes, Connie S Price, William J Burman, Philip S Mehler, Timothy C Jenkins
Background.  Syndrome-specific interventions are a recommended approach to antibiotic stewardship, but additional data are needed to understand their potential impact. We implemented an intervention to improve the management of inpatient community-acquired pneumonia (CAP) and evaluated its effects on antibiotic and resource utilization. Methods.  A stakeholder group developed and implemented a clinical practice guideline and order set for inpatient, non-intensive care unit CAP recommending a short course (5 days) of a fluoroquinolone-sparing antibiotic regimen in uncomplicated cases...
October 2016: Open Forum Infectious Diseases
Corwin D Nelson, John D Lippolis, Timothy A Reinhardt, Randy E Sacco, Jessi L Powell, Mary E Drewnoski, Matthew O'Neil, Donald C Beitz, William P Weiss
The need for vitamin D supplementation of dairy cattle has been known for the better part of the last century and is well appreciated by dairy producers and nutritionists. Whether current recommendations and practices for supplemental vitamin D are meeting the needs of dairy cattle, however, is not well known. The vitamin D status of animals is reliably indicated by the concentration of the 25-hydroxyvitamin D [25(OH)D] metabolite in serum or plasma, with a concentration of 30 ng/mL proposed as a lower threshold for sufficiency...
October 13, 2016: Journal of Dairy Science
David van Duin, Paula D Strassle, Lauren M DiBiase, Anne M Lachiewicz, William A Rutala, Timothy Eitas, Robert Maile, Hajime Kanamori, David J Weber, Bruce A Cairns, Sonia Napravnik, Samuel W Jones
BACKGROUND: Infections are an important cause of morbidity and mortality after burn injuries. Here, we describe the time line of infections and pathogens after burns. METHODS: A retrospective study was performed in a large tertiary care burn center from 2004-2013. Analyses were performed on health care-associated infections (HAIs) meeting Centers for Disease Control and Prevention criteria and on all positive cultures. Incidence rates per 1,000 days were calculated for specific HAI categories and pathogens and across hospitalization time (week 1, weeks 2-3, and week ≥4)...
October 11, 2016: American Journal of Infection Control
Benny O Manin, Heather M Ferguson, Indra Vythilingam, Kim Fornace, Timothy William, Steve J Torr, Chris Drakeley, Tock H Chua
BACKGROUND: In recent years, the primate malaria Plasmodium knowlesi has emerged in human populations throughout South East Asia, with the largest hotspot being in Sabah, Malaysian Borneo. Control efforts are hindered by limited knowledge of where and when people get exposed to mosquito vectors. It is assumed that exposure occurs primarily when people are working in forest areas, but the role of other potential exposure routes (including domestic or peri-domestic transmission) has not been thoroughly investigated...
October 2016: PLoS Neglected Tropical Diseases
Anne C Ritter, Amy K Wagner, Anthony Fabio, Mary Jo Pugh, William C Walker, Jerzy P Szaflarski, Ross D Zafonte, Allen W Brown, Flora M Hammond, Tamara Bushnik, Douglas Johnson-Greene, Timothy Shea, Jason W Krellman, Joseph A Rosenthal, Laura E Dreer
OBJECTIVE: Determine incidence of posttraumatic seizure (PTS) following traumatic brain injury (TBI) among individuals with moderate-to-severe TBI requiring rehabilitation and surviving at least 5 years. METHODS: Using the prospective TBI Model Systems National Database, we calculated PTS incidence during acute hospitalization, and at years 1, 2, and 5 postinjury in a continuously followed cohort enrolled from 1989 to 2000 (n = 795). Incidence rates were stratified by risk factors, and adjusted relative risk (RR) was calculated...
October 14, 2016: Epilepsia
Jingjing Liang, Thomas W Crowther, Nicolas Picard, Susan Wiser, Mo Zhou, Giorgio Alberti, Ernst-Detlef Schulze, A David McGuire, Fabio Bozzato, Hans Pretzsch, Sergio de-Miguel, Alain Paquette, Bruno Hérault, Michael Scherer-Lorenzen, Christopher B Barrett, Henry B Glick, Geerten M Hengeveld, Gert-Jan Nabuurs, Sebastian Pfautsch, Helder Viana, Alexander C Vibrans, Christian Ammer, Peter Schall, David Verbyla, Nadja Tchebakova, Markus Fischer, James V Watson, Han Y H Chen, Xiangdong Lei, Mart-Jan Schelhaas, Huicui Lu, Damiano Gianelle, Elena I Parfenova, Christian Salas, Eungul Lee, Boknam Lee, Hyun Seok Kim, Helge Bruelheide, David A Coomes, Daniel Piotto, Terry Sunderland, Bernhard Schmid, Sylvie Gourlet-Fleury, Bonaventure Sonké, Rebecca Tavani, Jun Zhu, Susanne Brandl, Jordi Vayreda, Fumiaki Kitahara, Eric B Searle, Victor J Neldner, Michael R Ngugi, Christopher Baraloto, Lorenzo Frizzera, Radomir Bałazy, Jacek Oleksyn, Tomasz Zawiła-Niedźwiecki, Olivier Bouriaud, Filippo Bussotti, Leena Finér, Bogdan Jaroszewicz, Tommaso Jucker, Fernando Valladares, Andrzej M Jagodzinski, Pablo L Peri, Christelle Gonmadje, William Marthy, Timothy O'Brien, Emanuel H Martin, Andrew R Marshall, Francesco Rovero, Robert Bitariho, Pascal A Niklaus, Patricia Alvarez-Loayza, Nurdin Chamuya, Renato Valencia, Frédéric Mortier, Verginia Wortel, Nestor L Engone-Obiang, Leandro V Ferreira, David E Odeke, Rodolfo M Vasquez, Simon L Lewis, Peter B Reich
The biodiversity-productivity relationship (BPR) is foundational to our understanding of the global extinction crisis and its impacts on ecosystem functioning. Understanding BPR is critical for the accurate valuation and effective conservation of biodiversity. Using ground-sourced data from 777,126 permanent plots, spanning 44 countries and most terrestrial biomes, we reveal a globally consistent positive concave-down BPR, showing that continued biodiversity loss would result in an accelerating decline in forest productivity worldwide...
October 14, 2016: Science
Timothy L Frankel, Efsevia Vakiani, Hari Nathan, Ronald P DeMatteo, T Peter Kingham, Peter J Allen, William R Jarnagin, Nancy E Kemeny, David B Solit, Michael I D'Angelica
BACKGROUND: In the past 3 decades, a better understanding of gene mutations and their role in carcinogenesis has led to improvement in our ability to treat patients with metastatic disease. The objective of the current study was to determine whether the location of a driver mutation within an affected gene impacts the biology of metastatic colorectal cancer. METHODS: DNA was collected from 165 randomly selected specimens of patients who underwent margin-negative resection of colorectal liver metastases with curative intent...
October 13, 2016: Cancer
Tania A Pawade, Timothy R G Cartlidge, William S A Jenkins, Philip D Adamson, Phillip Robson, Christophe Lucatelli, Edwin J R Van Beek, Bernard Prendergast, Alan R Denison, Laura Forsyth, James H F Rudd, Zahi A Fayad, Alison Fletcher, Sharon Tuck, David E Newby, Marc R Dweck
BACKGROUND: 18F-Fluoride positron emission tomography (PET) and computed tomography (CT) can measure disease activity and progression in aortic stenosis. Our objectives were to optimize the methodology, analysis, and scan-rescan reproducibility of aortic valve 18F-fluoride PET-CT imaging. METHODS AND RESULTS: Fifteen patients with aortic stenosis underwent repeated 18F-fluoride PET-CT. We compared nongated PET and noncontrast CT, with a modified approach that incorporated contrast CT and ECG-gated PET...
October 2016: Circulation. Cardiovascular Imaging
Maeghan O'Neill, Cristina Ballesteros, Lucienne Tritten, Erica Burkman, Weam I Zaky, Jianguo Xia, Andrew Moorhead, Steven A Williams, Timothy G Geary
The use of microfilaricidal drugs for the control of onchocerciasis and lymphatic filariasis (LF) necessitates prolonged yearly dosing. Prospects for elimination or eradication of these diseases would be enhanced by the availability of a macrofilaricidal drug. Flubendazole (FLBZ), a benzimidazole anthelmintic, is an appealing candidate. FLBZ has demonstrated potent macrofilaricidal effects in a number of experimental rodent models and in one human trial. Unfortunately, FLBZ was deemed unsatisfactory for use in mass drug administration campaigns due to its limited oral bioavailability...
October 1, 2016: International Journal for Parasitology, Drugs and Drug Resistance
Jennifer L Williams, Carmen K Chan, Paul A Toste, Irmina A Elliott, Charles R Vasquez, Dharma B Sunjaya, Eric A Swanson, Jamie Koo, O Joe Hines, Howard A Reber, David W Dawson, Timothy R Donahue
Importance: Patients with periampullary adenocarcinomas have widely variable survival. These cancers are traditionally categorized by their anatomic location of origin, namely, the duodenum, ampulla, distal common bile duct (CBD), or head of the pancreas. However, they can be alternatively subdivided histopathologically into intestinal or pancreaticobiliary (PB) types, which may more accurately estimate prognosis. Objectives: To identify factors associated with survival in patients with periampullary adenocarcinomas and to compare survival between those having intestinal-type or PB-type cancers originating from the duodenum, ampulla, or distal CBD with those having pancreatic ductal adenocarcinoma (PDAC)...
October 12, 2016: JAMA Surgery
Thomas W Lycan, Timothy S Pardee, William J Petty, Marcelo Bonomi, Angela Alistar, Zanetta S Lamar, Scott Isom, Michael D Chan, Antonius A Miller, Jimmy Ruiz
BACKGROUND: Small cell lung cancer (SCLC) is a common lung cancer which presents with extensive stage disease at time of diagnosis in two-thirds of patients. For treatment of advanced disease, traditional platinum doublet chemotherapy induces response rates up to 80% but with few durable responses. CPI-613 is a novel anti-cancer agent that selectively inhibits the altered form of mitochondrial energy metabolism in tumor cells. METHODS: We evaluated CPI-613 with a single-arm, open-label phase II study in patients with relapsed or refractory SCLC...
2016: PloS One
Awani Upadhyay, Aditya Pisupati, Timothy Jegla, Matt Crook, Keith J Mickolajczyk, Matthew Shorey, Laura E Rohan, Katherine A Billings, Melissa M Rolls, William O Hancock, Wendy Hanna-Rose
TRPV ion channels are directly activated by sensory stimuli and participate in thermo-, mechano- and chemo-sensation. They are also hypothesized to respond to endogenous agonists that would modulate sensory responses. Here, we show that the nicotinamide (NAM) form of vitamin B3 is an agonist of a Caenorhabditis elegans TRPV channel. Using heterologous expression in Xenopus oocytes, we demonstrate that NAM is a soluble agonist for a channel consisting of the well-studied OSM-9 TRPV subunit and relatively uncharacterized OCR-4 TRPV subunit as well as the orthologous Drosophila Nan-Iav TRPV channel, and we examine stoichiometry of subunit assembly...
October 12, 2016: Nature Communications
Rasika Ann Mathias, Margaret A Taub, Christopher R Gignoux, Wenqing Fu, Shaila Musharoff, Timothy D O'Connor, Candelaria Vergara, Dara G Torgerson, Maria Pino-Yanes, Suyash S Shringarpure, Lili Huang, Nicholas Rafaels, Meher Preethi Boorgula, Henry Richard Johnston, Victor E Ortega, Albert M Levin, Wei Song, Raul Torres, Badri Padhukasahasram, Celeste Eng, Delmy-Aracely Mejia-Mejia, Trevor Ferguson, Zhaohui S Qin, Alan F Scott, Maria Yazdanbakhsh, James G Wilson, Javier Marrugo, Leslie A Lange, Rajesh Kumar, Pedro C Avila, L Keoki Williams, Harold Watson, Lorraine B Ware, Christopher Olopade, Olufunmilayo Olopade, Ricardo Oliveira, Carole Ober, Dan L Nicolae, Deborah Meyers, Alvaro Mayorga, Jennifer Knight-Madden, Tina Hartert, Nadia N Hansel, Marilyn G Foreman, Jean G Ford, Mezbah U Faruque, Georgia M Dunston, Luis Caraballo, Esteban G Burchard, Eugene Bleecker, Maria Ilma Araujo, Edwin Francisco Herrera-Paz, Kimberly Gietzen, Wendy E Grus, Michael Bamshad, Carlos D Bustamante, Eimear E Kenny, Ryan D Hernandez, Terri H Beaty, Ingo Ruczinski, Joshua Akey, Kathleen C Barnes
The African Diaspora in the Western Hemisphere represents one of the largest forced migrations in history and had a profound impact on genetic diversity in modern populations. To date, the fine-scale population structure of descendants of the African Diaspora remains largely uncharacterized. Here we present genetic variation from deeply sequenced genomes of 642 individuals from North and South American, Caribbean and West African populations, substantially increasing the lexicon of human genomic variation and suggesting much variation remains to be discovered in African-admixed populations in the Americas...
October 11, 2016: Nature Communications
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