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Michael Porter

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https://www.readbyqxmd.com/read/28814509/chemoproteomics-reveals-chemical-diversity-and-dynamics-of-4-oxo-2-nonenal-modifications-in-cells
#1
Rui Sun, Ling Fu, Ke-Ke Liu, Cai-Ping Tian, Yong Yang, Keri A Tallman, Ned A Porter, Daniel C Liebler, Jing Yang
4-Oxo-2-nonenal (ONE) derived from lipid peroxidation modifies nucleophiles and transduces redox signaling by its reactions with proteins. However, the molecular interactions between ONE and complex proteomes and their dynamics in situ remain largely unknown. Here we describe a quantitative chemoproteomic analysis of protein adduction by ONE in cells, in which the cellular target profile of ONE is mimicked by its alkynyl surrogate. The analyses reveal four types of ONE-derived modifications in cells, including ketoamide and Schiff-base adducts to lysine, Michael adducts to cysteine, and a novel pyrrole adducts to cysteine...
August 16, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28796316/effects-of-tocilizumab-on-neutrophil-function-and-kinetics
#2
Laurence S C Lok, Neda Farahi, Jatinder K Juss, Chrystalla Loutsios, Chandra K Solanki, A Michael Peters, Francis Donaldson, Benjamin Porter-Brown, Edwin R Chilvers
BACKGROUND: Decreases in circulating neutrophils (polymorphonuclear leukocytes, PMNs) have been reported in patients treated with the anti-interleukin-6 receptor (IL-6R) antibody tocilizumab (TCZ); the mechanism for this is unclear. We hypothesize that TCZ reduces circulating neutrophils by affecting margination and / or bone marrow trafficking without affecting neutrophil function or apoptosis. MATERIALS AND METHODS: 18 healthy subjects were randomized to single intravenous dose of TCZ 8 mg/kg (n = 12) or placebo (n = 6) on day 0...
August 10, 2017: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28774767/variation-in-the-evaluation-of-testicular-conditions-across-united-states-pediatric-emergency-departments
#3
Lois K Lee, Michael C Monuteaux, Joel D Hudgins, John J Porter, Susan C Lipsett, Florence Bourgeois, Bartley G Cilento, Mark I Neuman
OBJECTIVES: To explore the variation in diagnostic testing and management for males diagnosed with three testicular conditions (testicular torsion, appendix testis torsion, epididymitis/orchitis) using a large pediatric health care database. Diagnostic testing is frequently used in evaluation of the acute scrotum; however, there is likely variability in the use of these tests in the emergency department setting. METHODS: We conducted a cross-sectional study of males with the diagnoses of testicular torsion, appendix testis torsion, and epididymitis/orchitis...
July 26, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28753431/project-drive-a-compendium-of-cancer-dependencies-and-synthetic-lethal-relationships-uncovered-by-large-scale-deep-rnai-screening
#4
E Robert McDonald, Antoine de Weck, Michael R Schlabach, Eric Billy, Konstantinos J Mavrakis, Gregory R Hoffman, Dhiren Belur, Deborah Castelletti, Elizabeth Frias, Kalyani Gampa, Javad Golji, Iris Kao, Li Li, Philippe Megel, Thomas A Perkins, Nadire Ramadan, David A Ruddy, Serena J Silver, Sosathya Sovath, Mark Stump, Odile Weber, Roland Widmer, Jianjun Yu, Kristine Yu, Yingzi Yue, Dorothee Abramowski, Elizabeth Ackley, Rosemary Barrett, Joel Berger, Julie L Bernard, Rebecca Billig, Saskia M Brachmann, Frank Buxton, Roger Caothien, Justina X Caushi, Franklin S Chung, Marta Cortés-Cros, Rosalie S deBeaumont, Clara Delaunay, Aurore Desplat, William Duong, Donald A Dwoske, Richard S Eldridge, Ali Farsidjani, Fei Feng, JiaJia Feng, Daisy Flemming, William Forrester, Giorgio G Galli, Zhenhai Gao, François Gauter, Veronica Gibaja, Kristy Haas, Marc Hattenberger, Tami Hood, Kristen E Hurov, Zainab Jagani, Mathias Jenal, Jennifer A Johnson, Michael D Jones, Avnish Kapoor, Joshua Korn, Jilin Liu, Qiumei Liu, Shumei Liu, Yue Liu, Alice T Loo, Kaitlin J Macchi, Typhaine Martin, Gregory McAllister, Amandine Meyer, Sandra Mollé, Raymond A Pagliarini, Tanushree Phadke, Brian Repko, Tanja Schouwey, Frances Shanahan, Qiong Shen, Christelle Stamm, Christine Stephan, Volker M Stucke, Ralph Tiedt, Malini Varadarajan, Kavitha Venkatesan, Alberto C Vitari, Marco Wallroth, Jan Weiler, Jing Zhang, Craig Mickanin, Vic E Myer, Jeffery A Porter, Albert Lai, Hans Bitter, Emma Lees, Nicholas Keen, Audrey Kauffmann, Frank Stegmeier, Francesco Hofmann, Tobias Schmelzle, William R Sellers
Elucidation of the mutational landscape of human cancer has progressed rapidly and been accompanied by the development of therapeutics targeting mutant oncogenes. However, a comprehensive mapping of cancer dependencies has lagged behind and the discovery of therapeutic targets for counteracting tumor suppressor gene loss is needed. To identify vulnerabilities relevant to specific cancer subtypes, we conducted a large-scale RNAi screen in which viability effects of mRNA knockdown were assessed for 7,837 genes using an average of 20 shRNAs per gene in 398 cancer cell lines...
July 27, 2017: Cell
https://www.readbyqxmd.com/read/28749372/3d-printing-a-family-of-biomimetic-models-to-explain-armored-grasping-in-syngnathid-fishes
#5
Michael M Porter, Nakul Ravikumar
Seahorses and pipehorses evolved at least two independent strategies for tail grasping, despite being armored with a heavy body plating. To help explain mechanical trade-offs associated with the different designs, we created a "family" of 3D-printed models that mimic variations in the presence and size of their armored plates. We measured the performance of the biomimetic proxies across seven mechanical metrics, representative of their protective and prehensile capacities. Our results show that the models mimicking the tails of seahorses are the best all-around performers, while those of the distal-most, prehensile region of pipehorses are more flexible, but less protected...
July 27, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28715480/tales-of-diversity-genomic-and-morphological-characteristics-of-forty-six-arthrobacter-phages
#6
Karen K Klyczek, J Alfred Bonilla, Deborah Jacobs-Sera, Tamarah L Adair, Patricia Afram, Katherine G Allen, Megan L Archambault, Rahat M Aziz, Filippa G Bagnasco, Sarah L Ball, Natalie A Barrett, Robert C Benjamin, Christopher J Blasi, Katherine Borst, Mary A Braun, Haley Broomell, Conner B Brown, Zachary S Brynell, Ashley B Bue, Sydney O Burke, William Casazza, Julia A Cautela, Kevin Chen, Nitish S Chimalakonda, Dylan Chudoff, Jade A Connor, Trevor S Cross, Kyra N Curtis, Jessica A Dahlke, Bethany M Deaton, Sarah J Degroote, Danielle M DeNigris, Katherine C DeRuff, Milan Dolan, David Dunbar, Marisa S Egan, Daniel R Evans, Abby K Fahnestock, Amal Farooq, Garrett Finn, Christopher R Fratus, Bobby L Gaffney, Rebecca A Garlena, Kelly E Garrigan, Bryan C Gibbon, Michael A Goedde, Carlos A Guerrero Bustamante, Melinda Harrison, Megan C Hartwell, Emily L Heckman, Jennifer Huang, Lee E Hughes, Kathryn M Hyduchak, Aswathi E Jacob, Machika Kaku, Allen W Karstens, Margaret A Kenna, Susheel Khetarpal, Rodney A King, Amanda L Kobokovich, Hannah Kolev, Sai A Konde, Elizabeth Kriese, Morgan E Lamey, Carter N Lantz, Jonathan S Lapin, Temiloluwa O Lawson, In Young Lee, Scott M Lee, Julia Y Lee-Soety, Emily M Lehmann, Shawn C London, A Javier Lopez, Kelly C Lynch, Catherine M Mageeney, Tetyana Martynyuk, Kevin J Mathew, Travis N Mavrich, Christopher M McDaniel, Hannah McDonald, C Joel McManus, Jessica E Medrano, Francis E Mele, Jennifer E Menninger, Sierra N Miller, Josephine E Minick, Courtney T Nabua, Caroline K Napoli, Martha Nkangabwa, Elizabeth A Oates, Cassandra T Ott, Sarah K Pellerino, William J Pinamont, Ross T Pirnie, Marie C Pizzorno, Emilee J Plautz, Welkin H Pope, Katelyn M Pruett, Gabbi Rickstrew, Patrick A Rimple, Claire A Rinehart, Kayla M Robinson, Victoria A Rose, Daniel A Russell, Amelia M Schick, Julia Schlossman, Victoria M Schneider, Chloe A Sells, Jeremy W Sieker, Morgan P Silva, Marissa M Silvi, Stephanie E Simon, Amanda K Staples, Isabelle L Steed, Emily L Stowe, Noah A Stueven, Porter T Swartz, Emma A Sweet, Abigail T Sweetman, Corrina Tender, Katrina Terry, Chrystal Thomas, Daniel S Thomas, Allison R Thompson, Lorianna Vanderveen, Rohan Varma, Hannah L Vaught, Quynh D Vo, Zachary T Vonberg, Vassie C Ware, Yasmene M Warrad, Kaitlyn E Wathen, Jonathan L Weinstein, Jacqueline F Wyper, Jakob R Yankauskas, Christine Zhang, Graham F Hatfull
The vast bacteriophage population harbors an immense reservoir of genetic information. Almost 2000 phage genomes have been sequenced from phages infecting hosts in the phylum Actinobacteria, and analysis of these genomes reveals substantial diversity, pervasive mosaicism, and novel mechanisms for phage replication and lysogeny. Here, we describe the isolation and genomic characterization of 46 phages from environmental samples at various geographic locations in the U.S. infecting a single Arthrobacter sp. strain...
2017: PloS One
https://www.readbyqxmd.com/read/28714533/multicenter-retrospective-study-of-neurostimulation-with-exit-of-therapy-by-explant
#7
Jason E Pope, Timothy R Deer, Steven Falowski, David Provenzano, Michael Hanes, Salim M Hayek, Jacob Amrani, Jonathan Carlson, Ioannis Skaribas, Kris Parchuri, W Porter McRoberts, Robert Bolash, Nameer Haider, Maged Hamza, Kasra Amirdelfan, Sean Graham, Corey Hunter, Eric Lee, Sean Li, Michael Yang, Lucas Campos, Shrif Costandi, Robert Levy, Nagy Mekhail
INTRODUCTION: Spinal cord stimulation (SCS) devices are cost effective and improve function as well as quality of life. Despite the demonstrated benefits of SCS, some patients have the device explanted. We are interested in exploring the patient characteristics of those explanted. METHODS: This is a retrospective chart review of neurostimulation patients who underwent explantation at 18 centers across the United States within the previous five years. RESULTS: Data from 352 patients were collected and compiled...
July 17, 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/28713018/effect-of-increased-surface-hydrophobicity-via-drug-conjugation-on-the-clearance-of-inhaled-pegylated-polylysine-dendrimers
#8
Shadabul Haque, Victoria M McLeod, Seth Jones, Sandy Fung, Michael Whittaker, Michelle McIntosh, Colin Pouton, David J Owen, Christopher J H Porter, Lisa M Kaminskas
PEGylated polylysine dendrimers are attractive and well tolerated inhalable drug delivery platforms that have the potential to control the release, absorption kinetics and lung retention time of conjugated drugs. The clinical application of these systems though, would likely require partial substitution of surface PEG groups with drug molecules that are anticipated to alter their lung clearance kinetics and clearance pathways. In the current study, we therefore evaluated the impact of increased surface hydrophobicity via substitution of 50% surface PEG groups with a model hydrophobic drug (α-carboxyl OtButylated methotrexate) on the lung clearance of a Generation 5 PEGylated polylysine dendrimer in rats...
July 13, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28700408/three-versus-four-factor-prothrombin-complex-concentrates-for-factor-based-resuscitation-in-a-porcine-hemorrhagic-shock-model
#9
Donald Michael Moe, Michael Scott Lallemand, John Mason McClellan, Joshua Porter Smith, Shannon T Marko, Matthew J Eckert, Matthew J Martin
BACKGROUND: Bleeding is a leading cause of preventable death following severe injury. Prothrombin complex concentrates (PCC) treat inborn coagulation disorders and reverse oral anticoagulants, but are proposed for use in "factor-based" resuscitation strategies. Few studies exist for this indication in acidosis, or that compare 3-factor (3PCC) versus 4-factor (4PCC) products. We aimed to assess and compare their safety and efficacy in a porcine model of severe hemorrhagic shock and coagulopathy...
July 12, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28698316/description-of-the-rates-trends-and-surgical-burden-associated-with-revision-for-prosthetic-joint-infection-following-primary-and-revision-knee-replacements-in-england-and-wales-an-analysis-of-the-national-joint-registry-for-england-wales-northern-ireland-and
#10
Erik Lenguerrand, Michael R Whitehouse, Andrew D Beswick, Andrew D Toms, Martyn L Porter, Ashley W Blom
OBJECTIVES: To describe the prevalence rates of revision surgery for the treatment of prosthetic joint infection (PJI) for patients undergoing knee replacement, their time trends, the cumulative incidence function of revision for PJI and estimate the burden of PJI at health service level. DESIGN: We analysed revision knee replacements performed due to a diagnosis of PJI and the linked index procedures recorded in the National Joint Registry from 2003 to 2014 for England and Wales...
July 10, 2017: BMJ Open
https://www.readbyqxmd.com/read/28653118/quantitative-pneumatic-otoscopy-using-a-light-based-ranging-technique
#11
Ryan L Shelton, Ryan M Nolan, Guillermo L Monroy, Paritosh Pande, Michael A Novak, Ryan G Porter, Stephen A Boppart
Otitis media is the leading cause of hearing loss in children. It is commonly associated with fluid in the ear, which can result in up to 45 dB of hearing loss for extended periods of time during a child's most important developmental years. Accurate assessment of middle ear effusions is an important part of understanding otitis media. Current technologies used to diagnose otitis media with effusion are pneumatic otoscopy, tympanometry, and acoustic reflectometry. While all of these techniques can reasonably diagnose the presence of an effusion, they provide limited information about the infection present behind the tympanic membrane...
August 2017: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/28639877/mild-cognitive-impairment-and-changes-in-everyday-function-over-time-the-importance-of-evaluating-both-speed-and-accuracy
#12
Caroline L Lassen-Greene, Kayla Steward, Ozioma Okonkwo, Ellen Porter, Michael Crowe, David E Vance, H Randall Griffith, Karlene Ball, Daniel C Marson, Virginia G Wadley
OBJECTIVES: Research estimates that a significant percentage of individuals with mild cognitive impairment (MCI) experience functional difficulties. In addition to reduced accuracy on measures of everyday function, cross-sectional research has demonstrated that speed of performing instrumental activities of daily living (IADLs) is slowed in individuals with MCI. The present study investigated whether baseline and longitudinal changes in speed and accuracy of IADL performance differed between persons with MCI and cognitively normal peers...
July 2017: Journal of Geriatric Psychiatry and Neurology
https://www.readbyqxmd.com/read/28628372/suicide-intervention-training-for-college-staff-program-evaluation-and-intervention-skill-measurement
#13
Laura Shannonhouse, Yung-Wei Dennis Lin, Kelly Shaw, Reema Wanna, Michael Porter
OBJECTIVE: Suicide remains a pressing issue for college communities. Consequently, gatekeeper trainings are often provided for staff. This study examines the effect of one such program, Applied Suicide Intervention Skills Training (ASIST). PARTICIPANTS: 51 college employees received ASIST in August of 2014 and were compared to 30 wait-list control participants. METHODS: Repeated Measures ANOVA were used to analyze pre- and post-training: (a) skills at responding to students-at-risk; (b) attitudes toward suicide; (c) knowledge about suicide; and (d) comfort/competence/confidence at helping a student-at-risk...
June 19, 2017: Journal of American College Health: J of ACH
https://www.readbyqxmd.com/read/28622962/synergistic-structures-from-magnetic-freeze-casting-with-surface-magnetized-alumina-particles-and-platelets
#14
Michael B Frank, Sze Hei Siu, Keyur Karandikar, Chin-Hung Liu, Steven E Naleway, Michael M Porter, Olivia A Graeve, Joanna McKittrick
Magnetic freeze casting utilizes the freezing of water, a low magnetic field and surface magnetized materials to make multi-axis strengthened porous scaffolds. A much greater magnetic moment was measured for larger magnetized alumina platelets compared with smaller particles, which indicated that more platelet aggregation occurred within slurries. This led to more lamellar wall alignment along the magnetic field direction during magnetic freeze casting at 75 mT. Slurries with varying ratios of magnetized particles to platelets (0:1, 1:3, 1:1, 3:1, 7:1, 1:0) produced porous scaffolds with different structural features and degrees of lamellar wall alignment...
June 3, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28607503/reproductive-fitness-and-genetic-risk-of-psychiatric-disorders-in-the-general-population
#15
Niamh Mullins, Andrés Ingason, Heather Porter, Jack Euesden, Alexandra Gillett, Sigurgeir Ólafsson, Daniel F Gudbjartsson, Cathryn M Lewis, Engilbert Sigurdsson, Evald Saemundsen, Ólafur Ó Gudmundsson, Michael L Frigge, Augustine Kong, Agnar Helgason, G Bragi Walters, Omar Gustafsson, Hreinn Stefansson, Kari Stefansson
The persistence of common, heritable psychiatric disorders that reduce reproductive fitness is an evolutionary paradox. Here, we investigate the selection pressures on sequence variants that predispose to schizophrenia, autism, bipolar disorder, major depression and attention deficit hyperactivity disorder (ADHD) using genomic data from 150,656 Icelanders, excluding those diagnosed with these psychiatric diseases. Polygenic risk of autism and ADHD is associated with number of children. Higher polygenic risk of autism is associated with fewer children and older age at first child whereas higher polygenic risk of ADHD is associated with having more children...
June 13, 2017: Nature Communications
https://www.readbyqxmd.com/read/28583306/developing-and-utilizing-controlled-human-models-of-infection
#16
Chad K Porter, A Louis Bourgeois, Robert W Frenck, Michael Prouty, Nicole Maier, Mark S Riddle
The controlled human infection model (CHIM) to assess the efficacy of vaccines against Shigella and enterotoxigenic Escherichia coli (ETEC) has several unique features that could significantly enhance the ability to test candidate vaccines. Despite increasing interest in these models, questions remain as to how to best incorporate them into vaccine development and how to maximize results. We designed a workshop focused on CHIM as part of the Vaccines Against Shigella and ETEC (VASE) Conference. The workshop, using the World Café method, focused on; clinical outcomes, nonclinical outcomes and model standardization...
June 2, 2017: Vaccine
https://www.readbyqxmd.com/read/28572264/recommendations-for-childhood-cancer-screening-and-surveillance-in-dna-repair-disorders
#17
REVIEW
Michael F Walsh, Vivian Y Chang, Wendy K Kohlmann, Hamish S Scott, Christopher Cunniff, Franck Bourdeaut, Jan J Molenaar, Christopher C Porter, John T Sandlund, Sharon E Plon, Lisa L Wang, Sharon A Savage
DNA repair syndromes are heterogeneous disorders caused by pathogenic variants in genes encoding proteins key in DNA replication and/or the cellular response to DNA damage. The majority of these syndromes are inherited in an autosomal-recessive manner, but autosomal-dominant and X-linked recessive disorders also exist. The clinical features of patients with DNA repair syndromes are highly varied and dependent on the underlying genetic cause. Notably, all patients have elevated risks of syndrome-associated cancers, and many of these cancers present in childhood...
June 1, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28572263/recommendations-for-surveillance-for-children-with-leukemia-predisposing-conditions
#18
REVIEW
Christopher C Porter, Todd E Druley, Ayelet Erez, Roland P Kuiper, Kenan Onel, Joshua D Schiffman, Kami Wolfe Schneider, Sarah R Scollon, Hamish S Scott, Louise C Strong, Michael F Walsh, Kim E Nichols
Leukemia, the most common childhood cancer, has long been recognized to occasionally run in families. The first clues about the genetic mechanisms underlying familial leukemia emerged in 1990 when Li-Fraumeni syndrome was linked to TP53 mutations. Since this discovery, many other genes associated with hereditary predisposition to leukemia have been identified. Although several of these disorders also predispose individuals to solid tumors, certain conditions exist in which individuals are specifically at increased risk to develop myelodysplastic syndrome (MDS) and/or acute leukemia...
June 1, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28544666/identifying-target-reference-points-for-harvesting-assessment-limited-wildlife-populations-a-case-study
#19
Bryan S Stevens, James R Bence, William F Porter, Michael L Jones
Identifying appropriate strategies for sustainable harvest is a challenge for many terrestrial vertebrate species because of uncertain system dynamics, limited data to inform population models, and potentially conflicting objectives that seek to harvest and maintain populations at desirable levels. The absence of monitoring and assessment infrastructure needed to regularly estimate abundance accentuates this challenge for many species, and limits application of rigorous state-dependent frameworks for decision making that are commonly advocated in natural resource management...
May 22, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28532657/mechanistic-link-between-diesel-exhaust-particles-and-respiratory-reflexes
#20
Ryan K Robinson, Mark A Birrell, John J Adcock, Michael A Wortley, Eric D Dubuis, Shu Chen, Catriona M McGilvery, Sheng Hu, Milo S P Shaffer, Sara J Bonvini, Sarah A Maher, Ian S Mudway, Alexandra E Porter, Chris Carlsten, Teresa D Tetley, Maria G Belvisi
BACKGROUND: Diesel exhaust particles (DEPs) are a major component of particulate matter in Europe's largest cities, and epidemiologic evidence links exposure with respiratory symptoms and asthma exacerbations. Respiratory reflexes are responsible for symptoms and are regulated by vagal afferent nerves, which innervate the airway. It is not known how DEP exposure activates airway afferents to elicit symptoms, such as cough and bronchospasm. OBJECTIVE: We sought to identify the mechanisms involved in activation of airway sensory afferents by DEPs...
May 19, 2017: Journal of Allergy and Clinical Immunology
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