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Ryan JP, Kostelic MM, Hsieh CC, Powers J, Aspinwall C, Dodds JN, Schiel JE, Marty MT, Baker ES. Characterizing Adeno-Associated Virus Capsids with Both Denaturing and Intact Analysis Methods. J Am Soc Mass Spectrom 2023; 34:2811-2821. [PMID: 38010134 DOI: 10.1021/jasms.3c00321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Adeno-associated virus (AAV) capsids are among the leading gene delivery platforms used to treat a vast array of human diseases and conditions. AAVs exist in a variety of serotypes due to differences in viral protein (VP) sequences with distinct serotypes targeting specific cells and tissues. As the utility of AAVs in gene therapy increases, ensuring their specific composition is imperative for the correct targeting and gene delivery. From a quality control perspective, current analytical tools are limited in their selectivity for viral protein (VP) subunits due to their sequence similarities, instrumental difficulties in assessing the large molecular weights of intact capsids, and the uncertainty in distinguishing empty and filled capsids. To address these challenges, we combined two distinct analytical workflows that assess the intact capsids and VP subunits separately. First, a selective temporal overview of resonant ion (STORI)-based charge detection-mass spectrometry (CD-MS) was applied for characterization of the intact capsids. Liquid chromatography, ion mobility spectrometry, and mass spectrometry (LC-IMS-MS) separations were then used for the capsid denaturing measurements. This multimethod combination was applied to three AAV serotypes (AAV2, AAV6, and AAV8) to evaluate their intact empty and filled capsid ratios and then examine the distinct VP sequences and modifications present.
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Affiliation(s)
- Jack P Ryan
- University of North Carolina, Department of Chemistry, Chapel Hill, North Carolina 27599, United States
| | - Marius M Kostelic
- University of Arizona, Department of Chemistry and Biochemistry, Tucson, Arizona 85721, United States
| | - Chih-Chieh Hsieh
- University of Arizona, Department of Chemistry and Biochemistry, Tucson, Arizona 85721, United States
| | - Joshua Powers
- Institute for Bioscience and Biotechnology Research (NIST), Gaithersburg Maryland 20899, United States
- North Carolina State University, Biomanufacturing Training and Education Center (BTEC), Raleigh, North Carolina 27695, United States
| | - Craig Aspinwall
- University of Arizona, Department of Chemistry and Biochemistry, Tucson, Arizona 85721, United States
| | - James N Dodds
- University of North Carolina, Department of Chemistry, Chapel Hill, North Carolina 27599, United States
| | - John E Schiel
- Institute for Bioscience and Biotechnology Research (NIST), Gaithersburg Maryland 20899, United States
| | - Michael T Marty
- University of Arizona, Department of Chemistry and Biochemistry, Tucson, Arizona 85721, United States
| | - Erin S Baker
- University of North Carolina, Department of Chemistry, Chapel Hill, North Carolina 27599, United States
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Loethen A, Lavelle R, Sadzak M, Bucio J, Sarswat N, Chung B, Smith B, Kalantari S, Grinstein J, Nguyen A, Belkin M, Murks C, Riley T, Powers J, Jones A, Kim G, Pinney S. Use of Complement-Fixing Assays to Expand the Donor Pool for Highly Sensitized Heart Transplant Recipients - The Role of C1q Testing. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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3
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Lavelle R, Loethen A, Murks C, Riley T, Powers J, Jones A, Belkin M, Nguyen A, Grinstein J, Chung B, Kalantari S, Smith B, Sarswat N, Kim G, Pinney S. Impact of Early Belatacept Use on 1-Year CAV Progression in Heart Transplant Recipients. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Loethen A, Lavelle R, Sarswat N, Chung B, Smith B, Kalantari S, Grinstein J, Nguyen A, Belkin M, Murks C, Riley T, Powers J, Jones A, Kim G, Pinney S. Efficacy and Tolerability of Belatacept in Heart Transplant Recipients. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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5
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Coots L, Powers J, Zhang S, Kale S, Mountziaris P. More than medications: The evolution of our eras protocol in microsurgical breast reconstruction. Clin Nutr ESPEN 2022. [DOI: 10.1016/j.clnesp.2022.06.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Cohen W, Siddiqi U, Combs P, Li W, Pinkos K, Mishra S, Lee A, Riley T, Murks C, Powers J, Lourenco L, Jeevanandam V, Grinstein J. Non-Association of Infectious Exposure and Seasonality with Cardiac Graft Rejection. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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7
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Dela Cruz M, Terry K, Besser S, Nguyen A, Chung B, Smith B, Kalantari S, Grinstein J, Sarswat N, Murks C, Powers J, Riley T, Pinney S, Kim G. Immune Function Testing and Long-Term Immune-Related Outcomes among Heart Transplant Recipients. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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8
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Noiman A, Macalino G, Won SH, Byrne M, Deiss R, Haw NJ, Ganesan A, Okulicz JF, Schofield C, Lalani T, Maves RC, Wang X, Agan BK, Achatz E, Bradley W, Merritt S, Merritt T, Olsen C, Rhodes C, Sjoberg T, Baker C, Chambers S, Colombo R, Ferguson T, Kunz A, Powers J, Tramont E, Banks S, Illinik L, Kronmann K, Tant R, Cammarata S, Curry J, Kirkland N, Utz G, Price M, Aronson N, Burgess T, Chu X, Estupigan C, Hsieh, Parmelee E, Tribble D, Won S, Ake J, Crowell T, Peel S, Barahona I, Blaylock J, Decker C, Ressner R. Sexual Risk Behaviors Associated with Sexually Transmitted Infections in a US Military Population Living with HIV After the Repeal of "Don't Ask, Don't Tell". AIDS Patient Care STDS 2020; 34:523-533. [PMID: 33296270 DOI: 10.1089/apc.2020.0095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Risk behaviors associated with sexually transmitted infections (STIs) among people living with HIV (PLWH) have not been well characterized in the US military. We identified risk behaviors associated with a new STI in this population after the repeal of "Don't Ask, Don't Tell." US Military HIV Natural History Study participants who completed the risk behavior questionnaire (RBQ) between 2014 and 2017 and had at least 1 year of follow-up were included (n = 1589). Logistic regression identified behaviors associated with incident STI in the year following RBQ completion. Overall, 18.9% acquired an STI and 52.7% reported condom use at last sexual encounter. Compared with those with no new sex partners, participants with between one and four or five or more new partners were 1.71 [1.25-2.35] and 6.12 [3.47-10.79] times more likely to get an STI, respectively. Individuals reporting low or medium/high perceived risk of STI were 1.83 [1.23-2.72] and 2.65 [1.70-4.15] times more likely to acquire a new STI than those reporting no perceived risk, respectively. Participants who preferred not to answer about sexual preference, number of new partners, or perceived STI risk were also more likely to acquire a new STI. Our study illustrates that despite regular access to health care and accurate perceptions of risk, rates of STI among PLWH remain high in the US military setting, as in others. Given the potential individual and public health consequences of STI coinfection after HIV, more work is needed to assess interventions aimed at sexual behavior change for PLWH.
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Affiliation(s)
- Adi Noiman
- Infectious Disease Clinical Research Program, Department of Preventive Medicine and Biostatistics, School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, USA
| | | | - Seung Hyun Won
- Infectious Disease Clinical Research Program, Department of Preventive Medicine and Biostatistics, School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, USA
| | - Morgan Byrne
- Department of Epidemiology, Milken Institute School of Public Health, George Washington University, Washington, District of Columbia, USA
| | - Robert Deiss
- Infectious Disease Clinical Research Program, Department of Preventive Medicine and Biostatistics, School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, USA
| | | | - Anuradha Ganesan
- Infectious Disease Clinical Research Program, Department of Preventive Medicine and Biostatistics, School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, USA
- Division of Infectious Diseases, Walter Reed National Military Medical Center, Bethesda, Maryland, USA
| | - Jason F. Okulicz
- Infectious Disease Clinical Research Program, Department of Preventive Medicine and Biostatistics, School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
- Infectious Disease Service, Brooke Army Medical Center, Fort Sam Houston, Texas, USA
| | - Christina Schofield
- Division of Infectious Diseases, Madigan Army Medical Center, Joint Base Lewis McChord, Washington, District of Columbia, USA
| | - Tahaniyat Lalani
- Infectious Disease Clinical Research Program, Department of Preventive Medicine and Biostatistics, School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, USA
- Division of Infectious Diseases, Naval Medical Center Portsmouth, Portsmouth, Virginia, USA
| | - Ryan C. Maves
- Infectious Disease Clinical Research Program, Department of Preventive Medicine and Biostatistics, School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
- Division of Infectious Diseases, Naval Medical Center San Diego, San Diego, California, USA
| | - Xun Wang
- Infectious Disease Clinical Research Program, Department of Preventive Medicine and Biostatistics, School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, USA
| | - Brian K. Agan
- Infectious Disease Clinical Research Program, Department of Preventive Medicine and Biostatistics, School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
- Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Maryland, USA
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Lawson K, Gauthier KS, Piovesan D, Fournier J, Rosen B, Maliyan A, Beatty J, Jin L, Leleti M, Ginn E, Udyavar A, Ada C, Au J, Meleza C, Zhao S, Young S, Walters M, Powers J. Discovery and characterization of novel, potent, and selective hypoxiainducible factor (HIF)-2α inhibitors. Eur J Cancer 2020. [DOI: 10.1016/s0959-8049(20)31106-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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10
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Stimpson S, Clarno K, Pawlowski R, Gardner R, Powers J, Collins B, Toth A, Novascone S, Pitts S, Hales J, Pastore G. Coupled fuel performance calculations in VERA and demonstration on Watts Bar unit 1, cycle 1. ANN NUCL ENERGY 2020. [DOI: 10.1016/j.anucene.2020.107554] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Zafar F, Ginader T, Powers J. LB1073 Exploring the influence of rural/metropolitan health disparities on melanoma outcomes in Iowa. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.06.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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12
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Nitta D, Imamura T, Chung B, Nguyen A, Raikhelkar J, Sarswat N, Lourenco L, Smith B, Holzhauser L, Kim G, Ebong I, Fujino T, Narang N, Murks C, Riley T, Powers J, Jeevanandam V, Sayer G, Uriel N. Correlation of ImmuKnow Assay Levels with Rejection and Infection after Heart Transplantation. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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13
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Yang B, Kanelidis A, Narang N, Holzhauser L, Nguyen A, Chung B, Raikhelkar J, Smith B, Sarswat N, Ebong I, Rodgers D, Imamura T, Murks C, Riley T, Powers J, Riley M, Jeevanandam V, Sayer G, Uriel N. Psychosocial Contraindications to Heart Transplant Listing in an Urban Academic Medical Center. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.1016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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14
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Lourenco L, Lang K, Simone P, Patel S, Powers J, Riley T, Murks C, Smith B, Kalantari S, Raikhelkar J, Sarswat N, Kim G, Sayer G, Uriel N. Association between Cumulative Pre-Transplant Amiodarone Dose and Post-Transplant Outcomes after Heart Transplantation. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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15
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Moseley M, Murff H, Powers J, Murff H, Salloum N, Noel C, Misra S. DEVELOPING A WHOLE HEALTH GERI-PACT: WHAT MATTERS MOST. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.2975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M Moseley
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, Tennessee, United States
| | - H Murff
- Geriatric Research Education and Clinical Center (GRECC), Department of Veterans Affairs, Tennessee Valley Healthcare System
| | - J Powers
- Geriatric Research Education and Clinical Center (GRECC), Department of Veterans Affairs, Tennessee Valley Healthcare System
| | - Harvey Murff
- Geriatric Research Education and Clinical Center (GRECC), Department of Veterans Affairs, Tennessee Valley Healthcare System
| | - N Salloum
- Department of Veterans Affairs, Tennessee Valley Healthcare System
| | - C Noel
- Department of Veterans Affairs, Tennessee Valley Healthcare System
| | - S Misra
- Geriatric Research Education and Clinical Center (GRECC), Department of Veterans Affairs, Tennessee Valley Healthcare System
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16
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Seitz L, Ashok D, Leleti M, Powers J, Rosen B, Miles D, Sharif E, Jin L, Park A, Young S, Rieger A, Schindler U, Karakunnel J, Walters M. Final results of the phase I study in healthy volunteers of AB928, a dual antagonist of the A2aR and A2bR adenosine receptors being studied as an activator of anti-tumor immune response. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy303.050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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17
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Witt EA, Shafer E, Staskon F, Powers J. An evaluation of a local oncology specialized pharmacists’ training program in non-small cell lung cancer. J Drug Assess 2018. [DOI: 10.1080/21556660.2018.1521070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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18
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Imamura T, Murks C, Riley T, Powers J, Chung B, Nguyen A, Rodgers D, Raikhelkar J, Kalantari S, Costanzo M, Jorde U, Ota T, Song T, Onsager D, Juricek C, Jeevanandam V, Kim G, Sayer G, Uriel N. Comparison of Survival and Readmission Rates in Patients 65 and Older Undergoing Heart Transplantation or LVAD Implantation. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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19
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Holzhauser L, Arnold K, Schroeder A, Imamura T, Nguyen A, Chung B, Narang N, Costanzo M, Jeevanandam V, Murks C, Riley T, Powers J, Sarswat N, Kalantari S, Raikhelkar J, Sayer G, Kim G, Uriel N, Alenghat F. Circulating Monocyte Subtypes Correlate with Cardiac Allograft Vasculopathy and Differ from Atherosclerotic Disease: A Tool for Monitoring? J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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20
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Lourenco L, Truman Z, Murks C, Riley T, Powers J, Reilly M, Kalantari S, Raikhelkar J, Sarswat N, Kim G, Sayer G, Uriel N. Association Between Tacrolimus Concentration/Dose Ratio and Renal Function Following Cardiac Transplant. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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21
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Nguyen A, Imamura T, Chung B, Murks C, Powers J, Riley T, Onsager D, Song T, Ota T, Kalantari S, Raikhelkar J, Sarswat N, Kim G, Costanzo M, Jorde U, Jeevanandam V, Sayer G, Uriel N. High Prevalence of BK Virus in Heart Transplant Patients and Effect on Outcomes. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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22
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Liu J, Wolfe S, Macleod A, Powers J. 699 Evaluation of colorimetry and biomechanical properties in wounds of dermatologic patients with postoperative infection. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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23
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Petti D, Hill R, Gehin J, Gougar H, Strydom G, O’Connor T, Heidet F, Kinsey J, Grandy C, Qualls A, Brown N, Powers J, Hoffman E, Croson D. A Summary of the Department of Energy’s Advanced Demonstration and Test Reactor Options Study. NUCL TECHNOL 2017. [DOI: 10.1080/00295450.2017.1336029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- D. Petti
- Idaho National Laboratory, P.O. Box 1625, Idaho Falls, Idaho 83415
| | - R. Hill
- Argonne National Laboratory, Argonne, Illinois
| | - J. Gehin
- Oak Ridge National Laboratory, Oak Ridge, Tennessee
| | - H. Gougar
- Idaho National Laboratory, P.O. Box 1625, Idaho Falls, Idaho 83415
| | - G. Strydom
- Idaho National Laboratory, P.O. Box 1625, Idaho Falls, Idaho 83415
| | - T. O’Connor
- U.S. Department of Energy, Germantown, Maryland
| | - F. Heidet
- Argonne National Laboratory, Argonne, Illinois
| | - J. Kinsey
- Argonne National Laboratory, Argonne, Illinois
| | - C. Grandy
- Argonne National Laboratory, Argonne, Illinois
| | - A. Qualls
- Oak Ridge National Laboratory, Oak Ridge, Tennessee
| | - N. Brown
- Oak Ridge National Laboratory, Oak Ridge, Tennessee
| | - J. Powers
- Oak Ridge National Laboratory, Oak Ridge, Tennessee
| | - E. Hoffman
- Argonne National Laboratory, Argonne, Illinois
| | - D. Croson
- Idaho National Laboratory, P.O. Box 1625, Idaho Falls, Idaho 83415
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Moir RW, Shaw HF, Caro A, Kaufman L, Latkowski JF, Powers J, Turchi PEA. Molten Salt Fuel Version of Laser Inertial Fusion Fission Energy (LIFE). Fusion Science and Technology 2017. [DOI: 10.13182/fst18-8166] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- R. W. Moir
- Lawrence Livermore National Laboratory, Livermore, CA
| | - H. F. Shaw
- Lawrence Livermore National Laboratory, Livermore, CA
| | - A. Caro
- Lawrence Livermore National Laboratory, Livermore, CA
| | - Larry Kaufman
- CALPHAD, Inc, 140 Clark Road, Brookline, MA 02445, larry
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25
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Nguyen A, Lourenco L, Bassi N, Imamura T, Sarswat N, Raikhelkar J, Adatya S, Kim G, Murks C, Powers J, Riley T, Jeevanandam V, Sayer G, Uriel N. Increased Risk of Rejection and Mortality in Heart Transplant Patients Receiving Granulocyte-Colony Stimulating Factor. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.1485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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26
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Simeonov P, Hsiao H, Powers J, Ammons D, Kau T, Cantis D, Zwiener J, Weaver D. Evaluation of a "walk-through" ladder top design during ladder-roof transitioning tasks. Appl Ergon 2017; 59:460-469. [PMID: 27890159 PMCID: PMC5127282 DOI: 10.1016/j.apergo.2016.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 10/06/2016] [Accepted: 10/11/2016] [Indexed: 06/06/2023]
Abstract
This study evaluated the effect of an extension ladder "walk-through" top design on kinetic and kinematic behaviors and the outward destabilizing forces induced on the ladder during transitioning at elevation. Thirty-two male participants performed stepping tasks between a ladder top and a roof at simulated elevation in a surround-screen virtual-reality system. The experimental conditions included a "walk-through" and a standard ladder top section supported on flat and sloped roof surfaces. Three force platforms were placed under the ladder section and in the roof to measure propulsion forces during transitions. A motion measurement system was used to record trunk kinematics. The frictional demand at the virtual ladder base was also calculated. The results indicate that under optimal ladder setup (angle 75.5 °), the frictional demand at the ladder base remains relatively small for all experimental conditions. Also, the "walk through" ladder top eased the ladder-to-roof transitions but not the roof-to-ladder transitions.
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Affiliation(s)
- P Simeonov
- Division of Safety Research, National Institute for Occupational Safety and Health, 1095 Willowdale Rd., Morgantown, WV 26505, USA.
| | - H Hsiao
- Division of Safety Research, National Institute for Occupational Safety and Health, 1095 Willowdale Rd., Morgantown, WV 26505, USA
| | - J Powers
- Division of Safety Research, National Institute for Occupational Safety and Health, 1095 Willowdale Rd., Morgantown, WV 26505, USA
| | - D Ammons
- Division of Safety Research, National Institute for Occupational Safety and Health, 1095 Willowdale Rd., Morgantown, WV 26505, USA
| | - T Kau
- Division of Safety Research, National Institute for Occupational Safety and Health, 1095 Willowdale Rd., Morgantown, WV 26505, USA
| | - D Cantis
- Division of Safety Research, National Institute for Occupational Safety and Health, 1095 Willowdale Rd., Morgantown, WV 26505, USA
| | - J Zwiener
- Division of Safety Research, National Institute for Occupational Safety and Health, 1095 Willowdale Rd., Morgantown, WV 26505, USA
| | - D Weaver
- Division of Safety Research, National Institute for Occupational Safety and Health, 1095 Willowdale Rd., Morgantown, WV 26505, USA
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Schindler U, Chen A, Leleti M, Sharif E, Miles D, Powers J, Tan J, Sexton H, Park T, Young S, Jaen J. Novel small-molecule inhibitors of ecto-nucleotidase CD73: Activation of human CD8+ T cells and effects on tumor growth and immune parameters in experimental tumor models. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)32885-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Mendell J, Powers J, Duda P, Eliopoulos H. Clinical safety of eteplirsen, a phosphorodiamidate morpholino oligomer (PMO), in Duchenne muscular dystrophy (DMD) patients amenable to skipping exon 51 of the DMD gene. Neuromuscul Disord 2016. [DOI: 10.1016/j.nmd.2016.06.247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Feng B, Dixon B, Sunny E, Cuadra A, Jacobson J, Brown N, Powers J, Worrall A, Passerini S, Gregg R. Standardized verification of fuel cycle modeling. ANN NUCL ENERGY 2016. [DOI: 10.1016/j.anucene.2016.03.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Murks C, RIley T, Powers J, Sayer G, Reilly M, Valentine-Bates B, Legaretta J, Kim G, Sarswat N, Adatya S, Uriel N. Nurse Practitioners Provide Safe and Effective Care to Patients in the First Year after Cardiac Transplantation in a Combined Nurse Practitioner-Physician Clinic. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Bradbury AR, Patrick-Miller L, Egleston BE, Maxwell KN, Brandt A, Brower J, DiGiovanni L, Long JM, Powers J, Stopfer J, Nathanson KL, Domchek SM. Abstract P2-09-01: Patient reported outcomes of multiplex breast cancer susceptibility testing utilizing a tiered-binned counseling and informed consent model in BRCA1/2 negative patients. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p2-09-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background:The risks, benefits and utilities of multiplex panels for breast cancer susceptibility are unknown and new counseling and informed consent models are needed. We sought to obtain patient reported outcomes of multiplex testing in BRCA1/2 negative patients utilizing a novel, previously piloted tiered-binned counseling model for multiplex testing. Methods:BRCA1/2 negative participants completed pre(V1) and post-test counseling(V2) and surveys evaluating cognitive, affective and behavioral responses to a 25-gene multiplex testing panel. We used linear regressions with estimation by GEE where appropriate. Results:376 patients have been approached. To date, 124 participants(33%) have consented to the study, 21(6%) declined and 231(61%) are considering. Of 95 who have completed pre-test counseling(V1), 88(93%) elected to proceed with 25-gene panel testing and (81%) were classified as making an informed choice after tiered-binned counseling. 6/53(11%) participants received a positive result, including 1 mutation in MSH2 and 5 in moderate penetrance genes (2 ATM, 1 BARD1, 1 CHEK2, 1 PALB2). 22/53(42%) participants received a variant of unknown significance(VUS). General anxiety and perceived utility decreased significantly with pre-test counseling and after results (Table 1). Knowledge increased with pre-test counseling; cancer worry increased after receipt of multiplex results. Higher cancer worry was associated only with lower income (2.6 points/income category, p<0.01). Those with a VUS had greater decreases in perceived utility compared to negative (p=0.01) or positive (p=0.003) results. To date, there are no other significant differences in knowledge, distress or uncertainty by test result. Medical management recommendations for the proband changed in 3/6 with a positive result. Cascade testing in the family was discussed as an option in 3/6 with a positive result. Conclusions:Many BRCA1/2-negative patients proceed with 25-gene cancer susceptibility testing if offered and most make informed choices utilizing a tiered-binned genetic counseling model. The tiered-binned counseling model is associated with increased knowledge, decreases in general anxiety and uncertainty after pre-test counseling and disclosure of results, but an increase in cancer worry after result disclosure. The clinical utility, long-term outcomes and differences in patient reported outcomes by test result remain unknown.
Table 1 Baseline, Mean(SD)After V1, Mean(SD)After V2, Mean(SD) N=75ˆ;N=49ˆˆN=75ˆ;N=49ˆˆN=49ˆˆGeneral Anxiety (range 0-21)6.4(3.9)*;6.9(3.9)**6.0(4.3)*;6.6(4.2)**5.8(4.5)**General Depression (range 0-212.8(2.9);3.1(3.2)3.0(3.5);3.1(3.6)3.0(3.7)State Anxiety (range 20-80)35.5(11.2);36.6(11.9)35.5(11.8);36.8(11.9)36.1(12.2)Cancer Worry (range 0-75)18.2(13.5);20.1(13.8)**16.7(12.5);17.2(11.9)**21.0(13.9)**Knowledge (range 17-82)65.7(5.0)**;66.5(5.0)**68.0(5.7)**;68.4(5.6)**67.3(4.9)**Uncertainty (range 0-15)5.8(3.9);6.2(4.3)5.6(3.7);5.4(3.2)5.6(3.5)Perceived Utility (range 24-120)75.2(14.0)*;75.9(14.0)**73.0(14.1)*;74.1(13.4)**68.4(16.9)***p≤0.05 **p≤0.01. ˆcompleted V1. ˆˆcompleted V1 & V2. To date, 53 have received results and 49 have completed post-disclosure surveys.
Citation Format: Bradbury AR, Patrick-Miller L, Egleston BE, Maxwell KN, Brandt A, Brower J, DiGiovanni L, Long JM, Powers J, Stopfer J, Nathanson KL, Domchek SM. Patient reported outcomes of multiplex breast cancer susceptibility testing utilizing a tiered-binned counseling and informed consent model in BRCA1/2 negative patients. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P2-09-01.
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Affiliation(s)
- AR Bradbury
- University of Pennsylvania, Philadelphia, PA; University of Chicago, Chicago, IL; Fox Chase Cancer Center, Philadelphia, PA
| | - L Patrick-Miller
- University of Pennsylvania, Philadelphia, PA; University of Chicago, Chicago, IL; Fox Chase Cancer Center, Philadelphia, PA
| | - BE Egleston
- University of Pennsylvania, Philadelphia, PA; University of Chicago, Chicago, IL; Fox Chase Cancer Center, Philadelphia, PA
| | - KN Maxwell
- University of Pennsylvania, Philadelphia, PA; University of Chicago, Chicago, IL; Fox Chase Cancer Center, Philadelphia, PA
| | - A Brandt
- University of Pennsylvania, Philadelphia, PA; University of Chicago, Chicago, IL; Fox Chase Cancer Center, Philadelphia, PA
| | - J Brower
- University of Pennsylvania, Philadelphia, PA; University of Chicago, Chicago, IL; Fox Chase Cancer Center, Philadelphia, PA
| | - L DiGiovanni
- University of Pennsylvania, Philadelphia, PA; University of Chicago, Chicago, IL; Fox Chase Cancer Center, Philadelphia, PA
| | - JM Long
- University of Pennsylvania, Philadelphia, PA; University of Chicago, Chicago, IL; Fox Chase Cancer Center, Philadelphia, PA
| | - J Powers
- University of Pennsylvania, Philadelphia, PA; University of Chicago, Chicago, IL; Fox Chase Cancer Center, Philadelphia, PA
| | - J Stopfer
- University of Pennsylvania, Philadelphia, PA; University of Chicago, Chicago, IL; Fox Chase Cancer Center, Philadelphia, PA
| | - KL Nathanson
- University of Pennsylvania, Philadelphia, PA; University of Chicago, Chicago, IL; Fox Chase Cancer Center, Philadelphia, PA
| | - SM Domchek
- University of Pennsylvania, Philadelphia, PA; University of Chicago, Chicago, IL; Fox Chase Cancer Center, Philadelphia, PA
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Eigl BJ, North S, Winquist E, Finch D, Wood L, Sridhar SS, Powers J, Good J, Sharma M, Squire JA, Bazov J, Jamaspishvili T, Cox ME, Bradbury PA, Eisenhauer EA, Chi KN. A phase II study of the HDAC inhibitor SB939 in patients with castration resistant prostate cancer: NCIC clinical trials group study IND195. Invest New Drugs 2015; 33:969-76. [PMID: 25983041 DOI: 10.1007/s10637-015-0252-4] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 05/11/2015] [Indexed: 02/04/2023]
Abstract
BACKGROUND SB939 is a potent oral inhibitor of class 1, 2, and 4 histone deacetylases (HDACs). These three HDAC classes are highly expressed in castration resistant prostate cancer (CRPC) and associated with poor clinical outcomes. We designed a phase II study of SB939 in men with metastatic CRPC. METHODS Patients received SB939 60 mg on alternate days three times per week for 3 weeks on a 4-week cycle. Primary endpoints were PSA response rate (RR) and progression-free survival (PFS). Secondary endpoints included objective response rate and duration; overall survival; circulating tumor cell (CTC) enumeration and safety. Exploratory correlative studies of the TMPRSS2-ERG fusion and PTEN biomarkers were also performed. RESULTS Thirty-two patients were enrolled of whom 88 % had received no prior chemotherapy. The median number of SB939 cycles administered was three (range 1-8). Adverse events were generally grade 1-2, with five pts experiencing one or more grade three event. One patient died due to myocardial infarction. A confirmed PSA response was noted in two pts (6 %), lasting 3.0 and 21.6 months. In patients with measurable disease there were no objective responses. Six patients had stable disease lasting 1.7 to 8.0 months. CTC response (from ≥5 at baseline to <5 at 6 or 12 weeks) occurred in 9/14 evaluable patients (64 %). CONCLUSION Although SB939 was tolerable at the dose/schedule given, and showed declines in CTC in the majority of evaluable patients, it did not show sufficient activity based on PSA RR to warrant further study as a single agent in unselected patients with CRPC.
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Affiliation(s)
- B J Eigl
- BC Cancer Agency, Vancouver, BC, Canada,
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Woan KV, Lienlaf M, Perez-Villaroel P, Lee C, Cheng F, Knox T, Woods DM, Barrios K, Powers J, Sahakian E, Wang HW, Canales J, Marante D, Smalley KSM, Bergman J, Seto E, Kozikowski A, Pinilla-Ibarz J, Sarnaik A, Celis E, Weber J, Sotomayor EM, Villagra A. Targeting histone deacetylase 6 mediates a dual anti-melanoma effect: Enhanced antitumor immunity and impaired cell proliferation. Mol Oncol 2015; 9:1447-1457. [PMID: 25957812 DOI: 10.1016/j.molonc.2015.04.002] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 02/20/2015] [Accepted: 04/08/2015] [Indexed: 01/31/2023] Open
Abstract
The median survival for metastatic melanoma is in the realm of 8-16 months and there are few therapies that offer significant improvement in overall survival. One of the recent advances in cancer treatment focuses on epigenetic modifiers to alter the survivability and immunogenicity of cancer cells. Our group and others have previously demonstrated that pan-HDAC inhibitors induce apoptosis, cell cycle arrest and changes in the immunogenicity of melanoma cells. Here we interrogated specific HDACs which may be responsible for this effect. We found that both genetic abrogation and pharmacologic inhibition of HDAC6 decreases in vitro proliferation and induces G1 arrest of melanoma cell lines without inducing apoptosis. Moreover, targeting this molecule led to an important upregulation in the expression of tumor associated antigens and MHC class I, suggesting a potential improvement in the immunogenicity of these cells. Of note, this anti-melanoma activity was operative regardless of mutational status of the cells. These effects translated into a pronounced delay of in vivo melanoma tumor growth which was, at least in part, dependent on intact immunity as evidenced by the restoration of tumor growth after CD4+ and CD8+ depletion. Given our findings, we provide the initial rationale for the further development of selective HDAC6 inhibitors as potential therapeutic anti-melanoma agents.
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Affiliation(s)
- K V Woan
- H. Lee Moffitt Cancer Center, USA
| | | | | | - C Lee
- All Children's Hospital, Johns Hopkins Medicine, USA
| | - F Cheng
- H. Lee Moffitt Cancer Center, USA
| | - T Knox
- H. Lee Moffitt Cancer Center, USA
| | | | | | - J Powers
- H. Lee Moffitt Cancer Center, USA
| | | | - H W Wang
- H. Lee Moffitt Cancer Center, USA
| | | | | | | | - J Bergman
- University of Illinois at Chicago, USA
| | - E Seto
- H. Lee Moffitt Cancer Center, USA
| | | | | | | | - E Celis
- Georgia Regents University, USA
| | - J Weber
- H. Lee Moffitt Cancer Center, USA
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Chu QSC, Nielsen TO, Alcindor T, Gupta A, Endo M, Goytain A, Xu H, Verma S, Tozer R, Knowling M, Bramwell VB, Powers J, Seymour LK, Eisenhauer EA. A phase II study of SB939, a novel pan-histone deacetylase inhibitor, in patients with translocation-associated recurrent/metastatic sarcomas-NCIC-CTG IND 200†. Ann Oncol 2015; 26:973-981. [PMID: 25632070 DOI: 10.1093/annonc/mdv033] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Accepted: 01/09/2015] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND A subgroup of sarcomas is characterized by defining chromosomal translocations, creating fusion transcription factor oncogenes. Resultant fusion oncoproteins associate with chromatin-modifying complexes containing histone deacetylases (HDAC), and lead to epigenetic transcriptional dysregulation. HDAC inhibitors were shown to be effective in vitro, reversing gene repression by these complexes, restoring PTEN expression and apoptosis via the PI3K/Akt/mTOR pathway. PATIENTS AND METHODS SB939 is an oral inhibitor of classes 1 and 2 HDAC. Eligible patients with recurrent or metastatic translocation-associated sarcoma (TAS) by local pathology were treated with 60 mg/day every other day for 3 of 4 weeks. Central pathology review was conducted with fusion oncogenes characterized, and HDAC2 expression correlated with efficacy in pre-specified methods. RESULTS Twenty-two patients were treated with a median of 2 cycles. Fourteen patients were assessable for response with confirmed specific chromosomal translocations; 8 had a best response of stable disease (SD) (median duration 5.4 months) with no confirmed objective responses. The 3-month progression-free survival (PFS) rate was 49%. Among those with HDAC2 score ≥5, 7/10 had SD, versus 0/3 with HDAC2 score <5. SB939 was considered as well tolerated with <10% patients experienced ≥grade 3 toxicity. CONCLUSION This study was stopped prematurely due to prolonged unavailability of SB939. No objective responses were seen. Although the observed SD in HDAC2 high patients was interesting, due to the small sample size, no definitive conclusion can be drawn about the efficacy of SB939 in this patient population. CLINICAL TRIAL NCT01112384.
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Affiliation(s)
- Q S-C Chu
- Division of Medical Oncology, Department of Oncology, Cross Cancer Institute, University of Alberta, Edmonton.
| | - T O Nielsen
- Department of Pathology, British Columbia Cancer Agency, Vancouver
| | - T Alcindor
- Division of Medical Oncology, Department of Oncology, McGill University, Montreal
| | - A Gupta
- Division of Medical Oncology, Department of Oncology, Mount Sinai Hospital/Princess Margaret Hospital, University of Toronto, Toronto, Canada
| | - M Endo
- Department of Orthopedic Surgery, Kyushu University, Fukuoka, Japan
| | - A Goytain
- Department of Pathology, British Columbia Cancer Agency, Vancouver
| | - H Xu
- Investigational New Drug Program, NCIC-Clinical Trials Group, Kingston
| | - S Verma
- Department of Medical Oncology, Ottawa Cancer Centre, University of Ottawa, Ottawa
| | - R Tozer
- Division of Medical Oncology, Department of Oncology, Jurvinski Cancer Centre, McMaster University, Hamilton
| | - M Knowling
- Department of Pathology, British Columbia Cancer Agency, Vancouver
| | - V B Bramwell
- Division of Medical Oncology, Department of Oncology, Tom Baker Cancer Centre, University of Calgary, Calgary, Canada
| | - J Powers
- Investigational New Drug Program, NCIC-Clinical Trials Group, Kingston
| | - L K Seymour
- Investigational New Drug Program, NCIC-Clinical Trials Group, Kingston
| | - E A Eisenhauer
- Investigational New Drug Program, NCIC-Clinical Trials Group, Kingston
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DeKoven M, Karkare S, Lee WC, Kelley LA, Cooper DL, Pham H, Powers J, Wisniewski T. Impact of haemophilia with inhibitors on caregiver burden in the United States. Haemophilia 2014; 20:822-30. [DOI: 10.1111/hae.12501] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/18/2014] [Indexed: 01/19/2023]
Affiliation(s)
| | | | | | - L. A. Kelley
- LA Kelley Communications Inc; Georgetown Massachusetts USA
| | | | - H. Pham
- Novo Nordisk Inc; Plainsboro New Jersey USA
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DeKoven M, Karkare S, Kelley LA, Cooper DL, Pham H, Powers J, Lee WC, Wisniewski T. Understanding the experience of caring for children with haemophilia: cross-sectional study of caregivers in the United States. Haemophilia 2014; 20:541-9. [DOI: 10.1111/hae.12379] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/11/2013] [Indexed: 01/08/2023]
Affiliation(s)
| | | | | | | | - H. Pham
- Novo Nordisk Inc; Plainsboro NJ USA
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Abstract
A leading cause for extension ladder fall incidents is a slide-out event usually related to suboptimal ladder inclination. An improved ladder positioning method or procedure could reduce the risk of ladder stability failure and the related fall injury. The objective of the study was to comparatively evaluate the effectiveness of a multimodal angle indicator with other existing methods for extension ladder angular positioning. Twenty experienced and 20 inexperienced ladder users participated in the study. Four ladder positioning methods were tested in a controlled laboratory environment with 4.88 m (16 ft) and 7.32 m (24 ft) ladders in extended and retracted positions. The positioning methods included a no-instruction method, the current standard anthropometric method, and two instrumental methods - a bubble level indicator, and a multimodal indicator providing direct feedback with visual and sound signals. Performance measures included positioning angle and time. The results indicated that the anthropometric method was effective in improving the extension ladder positioning angle (p < 0.001); however, it was associated with considerable variability and required 50% more time than no-instruction. The bubble level indicator was an accurate positioning method (with very low variability), but required more than double the time of the no-instruction method (p < 0.001). The multimodal indicator improved the ladder angle setting as compared to the no-instruction and anthropometry methods (p < 0.001) and required the least time for ladder positioning among the tested methods (p < 0.001). An indicator with direct multimodal feedback is a viable approach for quick and accurate ladder positioning. The main advantage of the new multimodal method is that it provides continuous feedback on the angle of the device and hence does not require repositioning of the ladder. Furthermore, this indicator can be a valuable tool for training ladder users to correctly apply the current ANSI A14 standard anthropometric method in ladder angular positioning. The multimodal indicator concept has been further developed to become a hand-held tool in the form of a smart phone application.
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Affiliation(s)
- P Simeonov
- Division of Safety Research, National Institute for Occupational Safety and Health, 1095 Willowdale Rd., Morgantown, WV 26505, USA.
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Guebre-Egziabher F, Alves TC, Perry RJ, Rahimi Y, Majumdar SK, Ioja S, Kumashiro N, Kahn M, Zhang D, Kibbey R, Shulman GI, Chau YY, Lee LC, Lee CT, Chen JB, Lee WC, Chiu CH, Ishimura E, Mori K, Wanibuchi H, Inaba M, Nakatani S, Bekker P, Charvat T, Miao S, Dairaghi D, Lohr L, Sullivan T, Seitz L, Miao Z, Powers J, Jaen J, Schall T, Idorn T, Knop F, Holst J, Hornum M, Feldt-Rasmussen B, Cucchiari D, Merizzoli E, Podesta M, Calvetta A, Angelini C, Badalamenti S. Diabetes - clinical. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Fliedner SM, Shankavaram U, Elkahloun AG, Huynh TT, Linehan WM, Timmers HJ, Tischler AS, Powers J, de Krijger R, Baysal B, David G, Lehnert H, Camphausen K, Pacak K. Genotype and tumor location determine gene expression signatures in pseudohypoxic pheochromocytomas and paragangliomas. Exp Clin Endocrinol Diabetes 2013. [DOI: 10.1055/s-0033-1336697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Eigl B, North S, Winquist E, Powers J, Good J, Sharma M, Squire J, Cox M, Eisenhauer E, Chi K. A Phase II Study of SB939 in Patients (PTS) with Castration Resistant Prostate Cancer (CRPC). Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)33480-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Powers J, McMillan C, Cook P, Brun C, Yushkevich P, Gee J, Grossman M. Comparative Methods for Analyzing Diffusion Tensor Imaging in Semantic Variant Primary Progressive Aphasia (P03.098). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p03.098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Boller A, Powers J, Burkholder L, Moore P, Camp E, Grossman M. Thematic Role Density Impairs Action Verb Comprehension in Alzheimer's Disease (P02.052). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p02.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Poh CH, Hershcovici T, Gasiorowska A, Navarro-Rodriguez T, Willis MR, Powers J, Ashpole N, Wendel CS, Noelck N, Fass R. The effect of antireflux treatment on patients with gastroesophageal reflux disease undergoing a mental arithmetic stressor. Neurogastroenterol Motil 2011; 23:e489-96. [PMID: 21366805 DOI: 10.1111/j.1365-2982.2011.01691.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Acute stress exacerbates heartburn in gastroesophageal reflux disease (GERD) patients by enhancing the perceptual responses to intraesophageal acid. The aim of the study was to determine if antireflux treatment can still alter stimulus response functions to acid in patients undergoing acute stress as compared with placebo. METHODS Symptomatic GERD patients with erosive esophagitis (EE) or an abnormal pH test were included. Patients underwent stimulus response functions to intraesophageal acid perfusion using the mental arithmetic stressor test. Thereafter, patients were randomized (2 : 1 ratio) to either esomeprazole 40 mg once daily or placebo for 8 weeks. On the last day of treatment, subjects underwent stimulus response functions to intraesophageal acid perfusion using a similar stressor as baseline. KEY RESULTS A total of 31 patients were randomized into the treatment arm (mean age 48.6 ± 2.8, M/F 21/10) and 16 into the placebo arm (mean age 52.3 ± 4.3, M/F 12/4). In the esomeprazole group, there was a significant increase in lag time to symptom perception (P = 0.02) and decreased in intensity rating (P = 0.01) as well as acid perfusion sensitivity score (P = 0.01). There was no significant difference in any of the stimulus response functions to acid in the placebo group between baseline and treatment. Interpersonal sensitivity was the only independent clinical predictor factor for response to antireflux treatment. CONCLUSIONS & INFERENCES Long-term antireflux treatment with a proton pump inhibitor is effective in reducing esophageal perception responses to acid during acute stress.
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Affiliation(s)
- C H Poh
- The Neuroenteric Clinical Research Group, Section of Gastroenterology, Southern Arizona VA Health Care System, and University of Arizona Health Sciences Center, Tucson, AZ 85723-0001, USA
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Simeonov P, Hsiao H, Powers J, Ammons D, Kau T, Amendola A. Postural stability effects of random vibration at the feet of construction workers in simulated elevation. Appl Ergon 2011; 42:672-681. [PMID: 21071015 DOI: 10.1016/j.apergo.2010.10.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2009] [Revised: 08/12/2010] [Accepted: 10/15/2010] [Indexed: 05/30/2023]
Abstract
The risk of falls from height on a construction site increases under conditions which degrade workers' postural control. At elevation, workers depend heavily on sensory information from their feet to maintain balance. The study tested two hypotheses: "sensory enhancement"--sub-sensory (undetectable) random mechanical vibrations at the plantar surface of the feet can improve worker's balance at elevation; and "sensory suppression"--supra-sensory (detectable) random mechanical vibrations can have a degrading effect on balance in the same experimental settings. Six young (age 20-35) and six aging (age 45-60) construction workers were tested while standing in standard and semi-tandem postures on instrumented gel insoles. The insoles applied sub- or supra-sensory levels of random mechanical vibrations to the feet. The tests were conducted in a surround-screen virtual reality system, which simulated a narrow plank at elevation on a construction site. Upper body kinematics was assessed with a motion-measurement system. Postural stability effects were evaluated by conventional and statistical mechanics sway measures, as well as trunk angular displacement parameters. Analysis of variance did not confirm the "sensory enhancement" hypothesis, but provided evidence for the "sensory suppression" hypothesis. The supra-sensory vibration had a destabilizing effect, which was considerably stronger in the semi-tandem posture and affected most of the sway variables. Sensory suppression associated with elevated vibration levels on a construction site may increase the danger of losing balance. Construction workers at elevation, e.g., on a beam or narrow plank might be at increased risk of fall if they can detect vibrations under their feet. To reduce the possibility of losing balance, mechanical vibration to supporting structures used as walking/working surfaces should be minimized when performing construction tasks at elevation.
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Affiliation(s)
- P Simeonov
- Division of Safety Research, National Institute for Occupational Safety and Health, 1095 Willowdale Rd., Morgantown, WV 26505, USA.
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Wise R, Blaser M, Carrs O, Cassell G, Fishman N, Guidos R, Levy S, Powers J, Norrby R, Tillotson G, Davies R, Projan S, Dawson M, Monnet D, Keogh-Brown M, Hand K, Garner S, Findlay D, Morel C, Wise R, Bax R, Burke F, Chopra I, Czaplewski L, Finch R, Livermore D, Piddock LJV, White T. The urgent need for new antibacterial agents. J Antimicrob Chemother 2011; 66:1939-40. [DOI: 10.1093/jac/dkr261] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Finch R, Blaser M, Carrs O, Cassell G, Fishman N, Guidos R, Levy S, Powers J, Norrby R, Tillotson G, Davies R, Projan S, Dawson M, Monnet D, Keogh-Brown M, Hand K, Garner S, Findlay D, Morel C, Wise R, Bax R, Burke F, Chopra I, Czaplewski L, Finch R, Livermore D, Piddock LJV, White T. Regulatory opportunities to encourage technology solutions to antibacterial drug resistance. J Antimicrob Chemother 2011; 66:1945-7. [DOI: 10.1093/jac/dkr259] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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White AR, Blaser M, Carrs O, Cassell G, Fishman N, Guidos R, Levy S, Powers J, Norrby R, Tillotson G, Davies R, Projan S, Dawson M, Monnet D, Keogh-Brown M, Hand K, Garner S, Findlay D, Morel C, Wise R, Bax R, Burke F, Chopra I, Czaplewski L, Finch R, Livermore D, Piddock LJV, White T. Effective antibacterials: at what cost? The economics of antibacterial resistance and its control. J Antimicrob Chemother 2011; 66:1948-53. [DOI: 10.1093/jac/dkr260] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Livermore DM, Blaser M, Carrs O, Cassell G, Fishman N, Guidos R, Levy S, Powers J, Norrby R, Tillotson G, Davies R, Projan S, Dawson M, Monnet D, Keogh-Brown M, Hand K, Garner S, Findlay D, Morel C, Wise R, Bax R, Burke F, Chopra I, Czaplewski L, Finch R, Livermore D, Piddock LJV, White T. Discovery research: the scientific challenge of finding new antibiotics. J Antimicrob Chemother 2011; 66:1941-4. [DOI: 10.1093/jac/dkr262] [Citation(s) in RCA: 194] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Truex MJ, Macbeth TW, Vermeul VR, Fritz BG, Mendoza DP, Mackley RD, Wietsma TW, Sandberg G, Powell T, Powers J, Pitre E, Michalsen M, Ballock-Dixon SJ, Zhong L, Oostrom M. Demonstration of combined zero-valent iron and electrical resistance heating for in situ trichloroethene remediation. Environ Sci Technol 2011; 45:5346-5351. [PMID: 21591672 DOI: 10.1021/es104266a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The effectiveness of in situ treatment using zero-valent iron (ZVI) for nonaqueous phase or significant sediment-associated contaminant mass can be limited by relatively low rates of mass transfer to bring contaminants in contact with the reactive media. For a field test in a trichloroethene (TCE) source area, combining moderate-temperature subsurface electrical resistance heating with in situ ZVI treatment was shown to accelerate TCE treatment by a factor of about 4 based on organic daughter products and a factor about 8 based on chloride concentrations. A mass-discharge-based analysis was used to evaluate reaction, dissolution, and volatilization processes at ambient groundwater temperature (~10 °C) and as temperature was increased up to about 50 °C. Increased reaction and contaminant dissolution were observed with increased temperature, but vapor- or aqueous-phase migration of TCE out of the treatment zone was minimal during the test because reactions maintained low aqueous-phase TCE concentrations.
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Affiliation(s)
- M J Truex
- Pacific Northwest National Laboratory, Richland Washington 99352, USA.
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Hershcovici T, Jha LK, Cui H, Powers J, Fass R. Night-time intra-oesophageal bile and acid: a comparison between gastro-oesophageal reflux disease patients who failed and those who were treated successfully with a proton pump inhibitor. Aliment Pharmacol Ther 2011; 33:837-44. [PMID: 21261670 DOI: 10.1111/j.1365-2036.2011.04583.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND Little is known about the contribution of bile and acid reflux to night-time symptoms generation in patients who failed PPI treatment. AIM To compare the degree of night-time oesophageal acid and bile [by the surrogate duodenogastroesophageal reflux (DGER)] exposure between gastro-oesophageal reflux disease (GERD) patients who failed and those who fully responded to PPI once a day while on treatment. METHODS Gastro-oesophageal reflux disease patients were assigned to the PPI failure group if they continued to report symptoms ≥3/week and to the PPI success group if they were asymptomatic for the last 3 months while on PPI once a day. All patients underwent upper endoscopy and subsequently simultaneous 24-h oesophageal Bilitec and pH testing while on PPI treatment. RESULTS Twenty-three patients were enrolled into the PPI failure group and 24 patients into the PPI success group. The percentage of night-time pH<4 and the number of night-time acid reflux episodes were significantly higher in the PPI failure group as compared with the PPI success group. All night-time DGER parameters were similar between the PPI failure and PPI success groups. CONCLUSIONS Night-time oesophageal acid exposure is significantly higher in the PPI failure group vs. PPI success group. The degree of night-time bile reflux is similar in the two groups of patients with GERD.
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Affiliation(s)
- T Hershcovici
- The Neuroenteric Clinical Research Group, Southern Arizona VA Health Care System and University of Arizona Health Sciences Center, 3601 South Sixth Avenue (1-111-GI), Tucson, AZ 85723-0001, USA
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