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Gregory Gibson

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https://www.readbyqxmd.com/read/28375679/dual-phase-iontophoresis-for-the-delivery-of-antisense-oligonucleotides
#1
Daniel J Gibson, Sonal S Tuli, Gregory S Schultz
In support of ongoing research in the study of corneal and skin wound healing, we sought to improve on previously published results by using iontophoresis to deliver RNA interference-based oligonucleotides. By using a electromechanics-based approach, we were able to devise a two-phase solution that separated the buffering solution from the antisense oligonucleotide (ASO) solution. The separation was obtained by making the drug solution a higher density than the buffer, leading it to sink directly onto the tissue surface...
April 4, 2017: Nucleic Acid Therapeutics
https://www.readbyqxmd.com/read/28245323/temporal-trends-in-treatment-and-subsequent-neoplasm-risk-among-5-year-survivors-of-childhood-cancer-1970-2015
#2
MULTICENTER STUDY
Lucie M Turcotte, Qi Liu, Yutaka Yasui, Michael A Arnold, Sue Hammond, Rebecca M Howell, Susan A Smith, Rita E Weathers, Tara O Henderson, Todd M Gibson, Wendy Leisenring, Gregory T Armstrong, Leslie L Robison, Joseph P Neglia
Importance: Cancer treatments are associated with subsequent neoplasms in survivors of childhood cancer. It is unknown whether temporal changes in therapy are associated with changes in subsequent neoplasm risk. Objective: To quantify the association between temporal changes in treatment dosing and subsequent neoplasm risk. Design, Setting, and Participants: Retrospective, multicenter cohort study of 5-year cancer survivors diagnosed before age 21 years from pediatric tertiary hospitals in the United States and Canada between 1970-1999, with follow-up through December 2015...
February 28, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28207886/connective-tissue-growth-factor-is-not-necessary-for-haze-formation-in-excimer-laser-wounded-mouse-corneas
#3
Xiaodi Feng, Liya Pi, Sriniwas Sriram, Gregory S Schultz, Daniel J Gibson
We sought to determine if connective tissue growth factor (CTGF) is necessary for the formation of corneal haze after corneal injury. Mice with post-natal, tamoxifen-induced, knockout of CTGF were subjected to excimer laser phototherapeutic keratectomy (PTK) and the corneas were allowed to heal. The extent of scaring was observed in non-induced mice, heterozygotes, and full homozygous knockout mice and quantified by macrophotography. The eyes from these mice were collected after euthanization for re-genotyping to control for possible Cre-mosaicism...
2017: PloS One
https://www.readbyqxmd.com/read/28128981/development-and-assessment-of-a-novel-canine-ex-vivo-corneal-model
#4
Laura R Proietto, R David Whitley, Dennis E Brooks, Gregory E Schultz, Daniel J Gibson, William M Berkowski, Marc E Salute, Caryn E Plummer
PURPOSE: To develop a novel ex vivo extended culture model of canine corneal epithelial cell wound healing. MATERIALS AND METHODS: Canine corneoscleral rims (CSR) were obtained and, after preparation for culture, were placed on a nutating scaffold and incubated in physiological conditions. In experiment 1, eight CSR in a serum-containing antimicrobial-fortified medium were monitored for epithelial integrity and bacterial infection up to 28 days in culture. CSR were assessed histologically at the end of the culture period end points 0, 7, 14, and 28 days with accompanying scanning electron microscopic (SEM) and transmission electron microscopic (TEM) evaluation...
January 27, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28102376/insights-into-the-mechanism-of-electrochemical-ozone-production-via-water-splitting-on-the-ni-and-sb-doped-sno2-catalyst
#5
Gregory Gibson, Ziyun Wang, Christopher Hardacre, Wen-Feng Lin
The H2O splitting mechanism is a very attractive alternative used in electrochemistry for the formation of O3. The most efficient catalysts employed for this reaction at room temperature are SnO2-based, in particular the Ni/Sb-SnO2 catalyst. In order to investigate the H2O splitting mechanism density functional theory (DFT) was performed on a Ni/Sb-SnO2 surface with oxygen vacancies. By calculating different SnO2 facets, the (110) facet was deemed most stable, and further doped with Sb and Ni. On this surface, the H2O splitting mechanism was modelled paying particular attention to the final two steps, the formation of O2 and O3...
February 1, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28101420/compact-diode-laser-source-for-multiphoton-biological-imaging
#6
Robert D Niederriter, Baris N Ozbay, Gregory L Futia, Emily A Gibson, Juliet T Gopinath
We demonstrate a compact, pulsed diode laser source suitable for multiphoton microscopy of biological samples. The center wavelength is 976 nm, near the peak of the two-photon cross section of common fluorescent markers such as genetically encoded green and yellow fluorescent proteins. The laser repetition rate is electrically tunable between 66.67 kHz and 10 MHz, with 2.3 ps pulse duration and peak powers >1 kW. The laser components are fiber-coupled and scalable to a compact package. We demonstrate >600 μm depth penetration in brain tissue, limited by laser power...
January 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28019691/biofilm-detection-by-wound-blotting-can-predict-slough-development-in-pressure-ulcers-a-prospective-observational-study
#7
Gojiro Nakagami, Gregory Schultz, Daniel J Gibson, Priscilla Phillips, Aya Kitamura, Takeo Minematsu, Tomomitsu Miyagaki, Akitatsu Hayashi, Sanae Sasaki, Junko Sugama, Hiromi Sanada
Bacteria have been found to form multicellular aggregates which have collectively been termed "biofilms." It is hypothesized that biofilm formation is a means to protect bacterial cells including protection form the immune response of humans. This protective mechanism is believed to explain persistent chronic wound infections. At times, the biofilms are abundant enough to see, and remove by simple wiping. However, recent evidence has shown that the removal of these visible portions are not sufficient, and that biofilms can continue to form even with daily wiping...
December 26, 2016: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/27959713/prevention-of-bleeding-in-patients-with-atrial-fibrillation-undergoing-pci
#8
RANDOMIZED CONTROLLED TRIAL
C Michael Gibson, Roxana Mehran, Christoph Bode, Jonathan Halperin, Freek W Verheugt, Peter Wildgoose, Mary Birmingham, Juliana Ianus, Paul Burton, Martin van Eickels, Serge Korjian, Yazan Daaboul, Gregory Y H Lip, Marc Cohen, Steen Husted, Eric D Peterson, Keith A Fox
Background In patients with atrial fibrillation undergoing percutaneous coronary intervention (PCI) with placement of stents, standard anticoagulation with a vitamin K antagonist plus dual antiplatelet therapy (DAPT) with a P2Y12 inhibitor and aspirin reduces the risk of thrombosis and stroke but increases the risk of bleeding. The effectiveness and safety of anticoagulation with rivaroxaban plus either one or two antiplatelet agents are uncertain. Methods We randomly assigned 2124 participants with nonvalvular atrial fibrillation who had undergone PCI with stenting to receive, in a 1:1:1 ratio, low-dose rivaroxaban (15 mg once daily) plus a P2Y12 inhibitor for 12 months (group 1), very-low-dose rivaroxaban (2...
December 22, 2016: New England Journal of Medicine
https://www.readbyqxmd.com/read/27933737/testing-the-influence-of-surfactant-based-wound-dressings-on-proteinase-activity
#9
Sunyoung Jeong, Gregory S Schultz, Daniel J Gibson
Proteinases are enzymes that can digest other proteins. In chronic wounds, a sub-class of these enzymes with the ability to degrade the extracellular matrix (matrix metalloproteinases, MMPs) have been found to both inhibit healing and to be able to aid in enzymatically debriding a wound. Enzymatic debridement using the enzymes present in a wound is generally called autolytic debridement. Clinicians seeking to employ autolytic debridement typically use occlusive materials such as medical honey, alginate dressings and other occlusive dressings...
December 8, 2016: International Wound Journal
https://www.readbyqxmd.com/read/27905186/severe-asthma-current-management-targeted-therapies-and-future-directions-a-roundtable-report
#10
REVIEW
Vanessa M McDonald, Steven Maltby, Helen K Reddel, Gregory G King, Peter A B Wark, Lorraine Smith, John W Upham, Alan L James, Guy B Marks, Peter G Gibson
Asthma is a chronic respiratory disease characterized by respiratory symptoms, airway inflammation, airway obstruction and airway hyper-responsiveness. Asthma is common and directly affects 10% of Australians, 1-5% of adults in Asia and 300 million people worldwide. It is a heterogeneous disorder with many clinical, molecular, biological and pathophysiological phenotypes. Current management strategies successfully treat the majority of patients with asthma who have access to them. However, there is a subset of an estimated 5-10% of patients with asthma who have severe disease and are disproportionately impacted by symptoms, exacerbations and overall illness burden...
January 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27881555/recurrent-hospitalization-among-patients-with-atrial-fibrillation-undergoing-intracoronary-stenting-treated-with-2-treatment-strategies-of-rivaroxaban-or-a-dose-adjusted-oral-vitamin-k-antagonist-treatment-strategy
#11
C Michael Gibson, Duane S Pinto, Gerald Chi, Douglas Arbetter, Megan Yee, Roxana Mehran, Christoph Bode, Jonathan Halperin, Freek W A Verheugt, Peter Wildgoose, Paul Burton, Martin van Eickels, Serge Korjian, Yazan Daaboul, Purva Jain, Gregory Y H Lip, Marc Cohen, Eric D Peterson, Keith A A Fox
BACKGROUND: Patients with atrial fibrillation who undergo intracoronary stenting traditionally are treated with a vitamin K antagonist (VKA) plus dual antiplatelet therapy (DAPT), yet this treatment leads to high risks of bleeding. We hypothesized that a regimen of rivaroxaban plus a P2Y12 inhibitor monotherapy or rivaroxaban plus DAPT could reduce bleeding and thereby have a favorable impact on all-cause mortality and the need for rehospitalization. METHODS: Stented subjects with nonvalvular atrial fibrillation (n=2124) were randomized 1:1:1 to administration of reduced-dose rivaroxaban 15 mg daily plus a P2Y12 inhibitor for 12 months (group 1); rivaroxaban 2...
January 24, 2017: Circulation
https://www.readbyqxmd.com/read/27849786/142-elevated-carboxyhemoglobin-levels-in-patients-requiring-extracorporeal-membrane-oxygenation
#12
Nimesh Shah, Colin Gibson, Gregory Kitchen, Michael Hockstein, Mladen Sokolovic
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27820947/effect-of-temporal-changes-in-therapeutic-exposure-on-self-reported-health-status-in-childhood-cancer-survivors
#13
Kirsten K Ness, Melissa M Hudson, Kendra E Jones, Wendy Leisenring, Yutaka Yasui, Yan Chen, Marilyn Stovall, Todd M Gibson, Daniel M Green, Joseph P Neglia, Tara O Henderson, Jacqueline Casillas, Jennifer S Ford, Karen E Effinger, Kevin R Krull, Gregory T Armstrong, Leslie L Robison, Kevin C Oeffinger, Paul C Nathan
Background: The effect of temporal changes in cancer therapy on health status among childhood cancer survivors has not been evaluated. Objective: To compare proportions of self-reported adverse health status outcomes among childhood cancer survivors across 3 decades. Design: Cross-sectional. (ClinicalTrials.gov: NCT01120353). Setting: 27 North American institutions. Participants: 14 566 adults, who survived for 5 or more years after initial diagnosis (median age, 27 years; range, 18 to 48 years), treated from 1970 to 1999...
January 17, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/27639573/porphyromonas-gingivalis-mediated-signaling-through-tlr4-mediates-persistent-hiv-infection-of-primary-macrophages
#14
Luis M Agosto, Juliane B Hirnet, Daniel H Michaels, Yazdani B Shaik-Dasthagirisaheb, Frank C Gibson, Gregory Viglianti, Andrew J Henderson
Periodontal infections contribute to HIV-associated co-morbidities in the oral cavity and provide a model to interrogate the dysregulation of macrophage function, inflammatory disease progression, and HIV replication during co-infections. We investigated the effect of Porphyromonas gingivalis on the establishment of HIV infection in monocyte-derived macrophages. HIV replication in macrophages was significantly repressed in the presence of P. gingivalis. This diminished viral replication was due partly to a decrease in the expression of integrated HIV provirus...
December 2016: Virology
https://www.readbyqxmd.com/read/27377155/real-life-effectiveness-of-omalizumab-in-severe-allergic-asthma-above-the-recommended-dosing-range-criteria
#15
Mark Hew, Andrew Gillman, Michael Sutherland, Peter Wark, Jeff Bowden, Michael Guo, Helen K Reddel, Christine Jenkins, Guy B Marks, Frank Thien, Janet Rimmer, Gregory P Katsoulotos, Matthew Cook, Ian Yang, Constance Katelaris, Simon Bowler, David Langton, Craig Wright, Michael Bint, Veronica Yozghatlian, Scott Burgess, Pathmanathan Sivakumaran, Kwok Y Yan, Vicky Kritikos, Matthew Peters, Melissa Baraket, Ali Aminazad, Paul Robinson, Adam Jaffe, Heather Powell, John W Upham, Vanessa M McDonald, Peter G Gibson
BACKGROUND: Omalizumab (Xolair) dosing in severe allergic asthma is based on serum IgE and bodyweight. In Australia, patients eligible for omalizumab but exceeding recommended ranges for IgE (30-1500 IU/mL) and bodyweight (30-150 kg) may still receive a ceiling dose of 750 mg/4 weeks. 62% of patients receiving government-subsidised omalizumab are enrolled in the Australian Xolair Registry (AXR). OBJECTIVES: To determine if AXR participants above the recommended dosing ranges benefit from omalizumab, and to compare their response to within-range participants...
July 5, 2016: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27360499/comparison-of-threshold-determinations-between-blood-lactate-samples-and-near-infrared-spectroscopy-1580-board-233-june-2-9-00-am-10-30-am
#16
Karlee S Edwards, Randolph E Hutchison, Gibson A E Klapthor, Kristine E Knowles, Gregory M Mocko, Ardalan Vahidi, Kelly A Humes, M S Murr
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27359650/comparison-of-ventilatory-thresholds-via-v-slope-method-to-lactate-thresholds-with-nirs-395-board-232-june-1-11-00-am-12-30-pm
#17
Randolph E Hutchison, Gibson A E Klapthor, Kristine E Knowles, Karlee S Edwards, Kelly A Humes, Gregory M Mocko, Ardalan Vahidi
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27359649/validity-and-reliability-of-a-pedal-based-power-meter-during-maximal-ergometer-testing-394-board-231-june-1-11-00-am-12-30-pm
#18
Gibson A E Klapthor, Randolph E Hutchison, Karlee S Edwards, Kristine E Knowles, Kelly A Humes, Gregory M Mocko, Ardalan Vahidi
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27348586/donor-dendritic-cell-derived-exosomes-promote-allograft-targeting-immune-response
#19
Quan Liu, Darling M Rojas-Canales, Sherrie J Divito, William J Shufesky, Donna Beer Stolz, Geza Erdos, Mara L G Sullivan, Gregory A Gibson, Simon C Watkins, Adriana T Larregina, Adrian E Morelli
The immune response against transplanted allografts is one of the most potent reactions mounted by the immune system. The acute rejection response has been attributed to donor dendritic cells (DCs), which migrate to recipient lymphoid tissues and directly activate alloreactive T cells against donor MHC molecules. Here, using a murine heart transplant model, we determined that only a small number of donor DCs reach lymphoid tissues and investigated how this limited population of donor DCs efficiently initiates the alloreactive T cell response that causes acute rejection...
August 1, 2016: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/27346827/immunologic-environment-influences-macrophage-response-to-porphyromonas-gingivalis
#20
G Papadopoulos, Y B Shaik-Dasthagirisaheb, N Huang, G A Viglianti, A J Henderson, A Kantarci, F C Gibson
Macrophages adapt both phenotypically and functionally to the cytokine balance in host tissue microenvironments. Recent studies established that macrophages contribute an important yet poorly understood role in the development of infection-elicited oral bone loss. We hypothesized that macrophage adaptation to inflammatory signals encountered before pathogen interaction would significantly influence the subsequent immune response of these cells to the keystone oral pathobiont Porphyromonas gingivalis. Employing classically activated (M1) and alternatively activated (M2) murine bone-marrow-derived macrophage (BMDMø), we observed that immunologic activation of macrophages before P...
June 27, 2016: Molecular Oral Microbiology
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