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Biscoe N, Baumann J, Murphy D. Network analysis of comorbid post-traumatic stress disorder and alcohol misuse in treatment-seeking UK Armed Forces veterans. BMJ Mil Health 2024; 170:281-282. [PMID: 36702523 DOI: 10.1136/military-2022-002329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 12/09/2022] [Indexed: 01/27/2023]
Affiliation(s)
| | - J Baumann
- Research Department, Combat Stress, Leatherhead, UK
| | - D Murphy
- Research Department, Combat Stress, Leatherhead, UK
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Murphy D, Hendrikx LJ, Williamson C, Baumann J. Longitudinal survey of UK veterans with pre-existing mental health difficulties: mental health during the COVID-19 pandemic. BMJ Mil Health 2023; 169:529-534. [PMID: 35078940 PMCID: PMC8804302 DOI: 10.1136/bmjmilitary-2021-002046] [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] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 01/08/2022] [Indexed: 11/28/2022]
Abstract
INTRODUCTION At the start of the COVID-19 pandemic, individuals with pre-existing mental health difficulties were thought to be vulnerable to mental health deterioration due to the emerging threat and the actions taken to control infection rates. Yet, there remained a paucity of research investigating changes in veteran well-being, a population facing higher rates of mental health difficulties compared with the general public. This longitudinal study aimed to investigate the mental health and well-being of UK veterans with pre-existing mental health difficulties at two time points during the COVID-19 pandemic. METHODS UK treatment-seeking veterans (N=121) completed an online survey administered towards the end of the first UK lockdown in June 2020 and 1 year later. Data were gathered on sociodemographic characteristics as well as psychometric measures of post-traumatic stress disorder (PTSD), common mental disorders (CMDs), anger difficulties and alcohol misuse. RESULTS The proportion of veterans meeting criteria of PTSD, anger and alcohol misuse remained similar across the two time points, while significantly fewer veterans met criteria for CMDs 1 year later. A notable proportion of the sample reported challenges in attending mental and physical health appointments, which was positively associated with not working and negatively associated with more COVID-19-related stressors. CONCLUSIONS These findings suggest that, to date, veterans with pre-existing mental health difficulties appear to demonstrate resilience as the COVID-19 pandemic progressed. However, as the pandemic continued, veterans faced significantly more COVID-19-related stressors, less social support, as well as difficulties attending health appointments.
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Affiliation(s)
- Dominic Murphy
- Department of Research, Combat Stress, Leatherhead, UK
- King's Centre for Military Health Research, King's College London, London, UK
| | - L J Hendrikx
- Department of Research, Combat Stress, Leatherhead, UK
| | - C Williamson
- Department of Research, Combat Stress, Leatherhead, UK
- King's Centre for Military Health Research, King's College London, London, UK
| | - J Baumann
- Department of Research, Combat Stress, Leatherhead, UK
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Williamson C, Baumann J, Murphy D. Military families: the impacts of having a first child during service on military mothers. BMJ Mil Health 2023; 169:403-407. [PMID: 34599082 DOI: 10.1136/bmjmilitary-2021-001928] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 09/08/2021] [Indexed: 11/04/2022]
Abstract
INTRODUCTION The rights, roles and responsibilities of servicewomen in the UK Armed Forces has changed dramatically over time. Previously, service personnel were automatically discharged from the military if they became pregnant. As the percentage of servicewomen in the UK Armed Forces increases, having children during service is becoming more common and maternity policies are now in place. Having children during military service can impact on the health and well-being of servicewomen, including a greater risk of illness when returning to work. METHODS A cross-sectional, self-report survey was used for data collection. The response rate was approximately 45%. Female Army veterans were recruited via a female military association. The survey collected data on parental status, the timing of their first child (during or after service), and several current mental and physical health and well-being outcomes. RESULTS Of the 750 female Army veterans who completed the survey, 406 reported having children. Of those with children, 14.5% had their first child during service compared with 85.5% after service. The most frequently endorsed health outcomes were low social support, loneliness and common mental health difficulties. Participants who had their first child during military service were more likely to have left the service non-voluntarily. CONCLUSIONS This study provided insight into the impacts of having a first child during military service on servicewomen. Overall, female Army veterans who had their first child during service had poorer outcomes, including leaving service non-voluntarily. However, none of the health or well-being outcomes remained significant after adjusting the results. This study explored a widely under researched population and field of research. Future research should seek to expand on our findings and continue to explore the impacts of having a first child during military service for military mothers.
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Affiliation(s)
- Charlotte Williamson
- King's Centre for Military Health Research, King's College London, London, UK
- Department of Research, Combat Stress, Leatherhead, Surrey, UK
| | - J Baumann
- Department of Research, Combat Stress, Leatherhead, Surrey, UK
| | - D Murphy
- King's Centre for Military Health Research, King's College London, London, UK
- Department of Research, Combat Stress, Leatherhead, Surrey, UK
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Baumann J, Spindler M, Throm Y, Lübbert M, Bender M. Absence of early platelet increment in healthy mice during decitabine treatment. Sci Rep 2022; 12:22266. [PMID: 36564544 PMCID: PMC9789030 DOI: 10.1038/s41598-022-26821-8] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022] Open
Abstract
Treatment of myelodysplastic syndromes includes the administration of the hypomethylating agent decitabine. An early platelet response in decitabine-treated myelodysplastic syndrome patients is a predictor of overall survival. The effect of decitabine on megakaryocytes and the bone marrow, however, is understudied. We show that an early platelet increment was not detectable in healthy mice during decitabine treatment. Analyses of bone marrow sections revealed vessels with dilated lumina, decreased cellularity, but increased number of red blood cells and the presence of (pro)platelet-like particles. Taken together, decitabine treatment of healthy mice does not induce an early platelet increment, but affects the bone marrow.
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Affiliation(s)
- Juliane Baumann
- grid.411760.50000 0001 1378 7891Institute of Experimental Biomedicine – Chair I, University Hospital Würzburg, Josef-Schneider-Str. 2, 97080 Würzburg, Germany
| | - Markus Spindler
- grid.411760.50000 0001 1378 7891Institute of Experimental Biomedicine – Chair I, University Hospital Würzburg, Josef-Schneider-Str. 2, 97080 Würzburg, Germany
| | - Yannick Throm
- grid.411760.50000 0001 1378 7891Institute of Experimental Biomedicine – Chair I, University Hospital Würzburg, Josef-Schneider-Str. 2, 97080 Würzburg, Germany
| | - Michael Lübbert
- grid.5963.9Department of Hematology, Oncology and Stem Cell Transplantation, Faculty of Medicine, University Medical Center Freiburg, University of Freiburg, Freiburg, Germany ,grid.7497.d0000 0004 0492 0584German Consortium for Translational Cancer Research, Freiburg, Germany
| | - Markus Bender
- grid.411760.50000 0001 1378 7891Institute of Experimental Biomedicine – Chair I, University Hospital Würzburg, Josef-Schneider-Str. 2, 97080 Würzburg, Germany
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Gerlach D, Sieber RN, Larsen J, Krusche J, De Castro C, Baumann J, Molinaro A, Peschel A. Horizontal transfer and phylogenetic distribution of the immune evasion factor tarP. Front Microbiol 2022; 13:951333. [PMID: 36386695 PMCID: PMC9650247 DOI: 10.3389/fmicb.2022.951333] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 09/12/2022] [Indexed: 11/29/2022] Open
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA), a major human pathogen, uses the prophage-encoded tarP gene as an important immune evasion factor. TarP glycosylates wall teichoic acid (WTA) polymers, major S. aureus surface antigens, to impair WTA immunogenicity and impede host defence. However, tarP phages appear to be restricted to only a few MRSA clonal lineages, including clonal complexes (CC) 5 and 398, for unknown reasons. We demonstrate here that tarP-encoding prophages can be mobilized to lysogenize other S. aureus strains. However, transfer is largely restricted to closely related clones. Most of the non-transducible clones encode tarM, which generates a WTA glycosylation pattern distinct from that mediated by TarP. However, tarM does not interfere with infection by tarP phages. Clonal complex-specific Type I restriction-modification systems were the major reasons for resistance to tarP phage infection. Nevertheless, tarP phages were found also in unrelated S. aureus clones indicating that tarP has the potential to spread to distant clonal lineages and contribute to the evolution of new MRSA clones.
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Affiliation(s)
- David Gerlach
- Interfaculty Institute of Microbiology and Infection Medicine, Infection Biology Section, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
- Cluster of Excellence EXC2124 Controlling Microbes to Fight Infection, University of Tübingen, Tübingen, Germany
| | | | | | - Janes Krusche
- Interfaculty Institute of Microbiology and Infection Medicine, Infection Biology Section, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
- Cluster of Excellence EXC2124 Controlling Microbes to Fight Infection, University of Tübingen, Tübingen, Germany
| | | | - Juliane Baumann
- Interfaculty Institute of Microbiology and Infection Medicine, Infection Biology Section, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
- Cluster of Excellence EXC2124 Controlling Microbes to Fight Infection, University of Tübingen, Tübingen, Germany
| | - Antonio Molinaro
- Department of Chemical Sciences, University of Naples, Naples, Italy
| | - Andreas Peschel
- Interfaculty Institute of Microbiology and Infection Medicine, Infection Biology Section, University of Tübingen, Tübingen, Germany
- German Center for Infection Research (DZIF), Partner Site Tübingen, Tübingen, Germany
- Cluster of Excellence EXC2124 Controlling Microbes to Fight Infection, University of Tübingen, Tübingen, Germany
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Baumann J, Sachs L, Otto O, Schoen I, Nestler P, Zaninetti C, Kenny M, Kranz R, von Eysmondt H, Rodriguez J, Schäffer TE, Nagy Z, Greinacher A, Palankar R, Bender M. Reduced platelet forces underlie impaired hemostasis in mouse models of MYH9-related disease. Sci Adv 2022; 8:eabn2627. [PMID: 35584211 PMCID: PMC9116608 DOI: 10.1126/sciadv.abn2627] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
MYH9-related disease patients with mutations in the contractile protein nonmuscle myosin heavy chain IIA display, among others, macrothrombocytopenia and a mild-to-moderate bleeding tendency. In this study, we used three mouse lines, each with one point mutation in the Myh9 gene at positions 702, 1424, or 1841, to investigate mechanisms underlying the increased bleeding risk. Agonist-induced activation of Myh9 mutant platelets was comparable to controls. However, myosin light chain phosphorylation after activation was reduced in mutant platelets, which displayed altered biophysical characteristics and generated lower adhesion, interaction, and traction forces. Treatment with tranexamic acid restored clot retraction in the presence of tPA and reduced bleeding. We verified our findings from the mutant mice with platelets from patients with the respective mutation. These data suggest that reduced platelet forces lead to an increased bleeding tendency in patients with MYH9-related disease, and treatment with tranexamic acid can improve the hemostatic function.
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Affiliation(s)
- Juliane Baumann
- Institute of Experimental Biomedicine—Chair I, University Hospital and Rudolf Virchow Center, Würzburg, Germany
| | - Laura Sachs
- Institute for Immunology and Transfusion Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Oliver Otto
- Zentrum für Innovationskompetenz—Humorale Immunreaktionen bei Kardiovaskulären Erkrankungen, University Greifswald, Greifswald, Germany
- Deutsches Zentrum für Herz-Kreislauf-Forschung e. V., Standort Greifswald, Universitätsmedizin Greifswald, Greifswald, Germany
| | - Ingmar Schoen
- School of Pharmacy and Biomolecular Sciences, Irish Centre for Vascular Biology, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Peter Nestler
- Zentrum für Innovationskompetenz—Humorale Immunreaktionen bei Kardiovaskulären Erkrankungen, University Greifswald, Greifswald, Germany
| | - Carlo Zaninetti
- Institute for Immunology and Transfusion Medicine, University Medicine Greifswald, Greifswald, Germany
- University of Pavia, Pavia, Italy
| | - Martin Kenny
- School of Pharmacy and Biomolecular Sciences, Irish Centre for Vascular Biology, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Ruth Kranz
- Institute of Experimental Biomedicine—Chair I, University Hospital and Rudolf Virchow Center, Würzburg, Germany
| | | | - Johanna Rodriguez
- Institute of Applied Physics, University of Tübingen, Tübingen, Germany
| | | | - Zoltan Nagy
- Institute of Experimental Biomedicine—Chair I, University Hospital and Rudolf Virchow Center, Würzburg, Germany
| | - Andreas Greinacher
- Institute for Immunology and Transfusion Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Raghavendra Palankar
- Institute for Immunology and Transfusion Medicine, University Medicine Greifswald, Greifswald, Germany
- Corresponding author. (M.B.); (R.P.)
| | - Markus Bender
- Institute of Experimental Biomedicine—Chair I, University Hospital and Rudolf Virchow Center, Würzburg, Germany
- Corresponding author. (M.B.); (R.P.)
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Murphy D, Williamson C, Baumann J, Busuttil W, Fear NT. Exploring the impact of COVID-19 and restrictions to daily living as a result of social distancing within veterans with pre-existing mental health difficulties. BMJ Mil Health 2022; 168:29-33. [PMID: 33243764 PMCID: PMC7692021 DOI: 10.1136/bmjmilitary-2020-001622] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 10/22/2020] [Accepted: 10/27/2020] [Indexed: 11/05/2022]
Abstract
INTRODUCTION Data are emerging showing the adverse consequences on mental health of the general public due to the COVID-19 pandemic. Little is known about the needs of veterans with pre-existing mental health difficulties during the COVID-19 pandemic. METHODS Data were collected through a cross-sectional online survey from a randomly selected sample (n=1092) of military veterans who have sought help for mental health difficulties from a veteran-specific UK-based charity. The response rate was 25.2% (n=275). Participants were asked to complete a range of standardised mental health outcomes (post-traumatic stress disorder (PTSD): Post-traumatic Stress Disorder Checklist, common mental health difficulties (CMDs): 12-Item General Health Questionnaire, difficulties with anger: 5-Item Dimensions of Anger Reactions-Revised and alcohol misuse: Alcohol Use Disorders Identification Test) and endorse a list of potential stressors related to changes to daily life resulting from COVID-19. Regression analyses were fitted to explore predictors of mental health severity. RESULTS It was observed that symptoms of common mental disorder and PTSD (69.3% and 65.0%, respectively) were the most commonly reported to have been exacerbated by the pandemic. Lack of social support and reporting increasing numbers of stressors related to COVID-19 were consistently associated with increasing severity of a range of mental health difficulties. CONCLUSIONS Our findings suggest veterans who had pre-existing mental health difficulties prior to the outbreak of COVID-19 may be at increased risk of experiencing CMDs as a result of the pandemic. Intervening to improve levels of social support and offering practical guidance to better manage any additional stressors relating to the pandemic may provide strategies to help reduce the burden of mental health symptoms.
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Affiliation(s)
- Dominic Murphy
- The Research Department, Combat Stress, Leatherhead, UK
- King's Centre for Military Health Research (KCMHR), King's College London, Strand Campus, London, UK
| | - C Williamson
- The Research Department, Combat Stress, Leatherhead, UK
| | - J Baumann
- The Research Department, Combat Stress, Leatherhead, UK
| | - W Busuttil
- The Research Department, Combat Stress, Leatherhead, UK
| | - N T Fear
- King's Centre for Military Health, King's College London, London, UK
- Academic Centre for Defence Mental Health, Ministry of Defence, London, UK
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Meinus C, Singer R, Nandi B, Jagot O, Becker-Ziaja B, Karo B, Mvula B, Jansen A, Baumann J, Schultz A. SARS-CoV-2 prevalence and immunity: a hospital-based study from Malawi. Int J Infect Dis 2021; 116:157-165. [PMID: 34929356 PMCID: PMC8679501 DOI: 10.1016/j.ijid.2021.12.336] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 12/10/2021] [Accepted: 12/14/2021] [Indexed: 11/06/2022] Open
Abstract
Background COVID-19 transmission and disease dynamics in sub-Saharan Africa are not well understood. Our study aims to provide insight into COVID-19 epidemiology in Malawi by estimating SARS-CoV-2 prevalence and immunity after SARS-CoV-2 infection in a hospital-based setting. Methods We conducted a hospital-based, convenience sampling, cross-sectional survey for SARS-CoV-2 in Lilongwe, Malawi. Participants answered a questionnaire and were tested for SARS-CoV-2 by enzyme-linked immunosorbent assay and real-time reverse-transcription polymerase chain reaction (RT-PCR). A surrogate virus neutralization test (sVNT) was performed in seropositive samples to estimate immunity. Poisson regression was used to assess SARS-CoV-2 point prevalence association with demographic and behavioral variables. Findings The study included 930 participants. We found a combined point prevalence of 10.1%. Separately analyzed, RT-PCR positivity was 2.0%, and seropositivity was 9.3%. Of tested seropositive samples, 90.1% were sVNT positive. We found a high rate (45.7%) of asymptomatic SARS-CoV-2 infection. SARS-CoV-2 point prevalence was significantly associated with being a healthcare worker. Interpretation Our study suggests that official data underestimate COVID-19 transmission. Using sVNTs to estimate immunity in Malawi is feasible and revealed considerable post-infection immunity in our cohort. Subclinical infection and transmission are probably a game-changer in surveillance, mitigation and vaccination strategies.
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Affiliation(s)
- C Meinus
- Charité - Universitätsmedizin Berlin, Institute of Tropical Medicine and International Health
| | - R Singer
- Robert Koch Institute Berlin, Germany
| | - B Nandi
- Baylor College of Medicine, Houston, USA; Kamuzu Central Hospital Lilongwe, Malawi
| | - O Jagot
- Kamuzu Central Hospital Lilongwe, Malawi
| | | | - B Karo
- Robert Koch Institute Berlin, Germany
| | - B Mvula
- Public health institute of Malawi, Lilongwe, Malawi
| | - A Jansen
- Robert Koch Institute Berlin, Germany
| | - J Baumann
- Robert Koch Institute Berlin, Germany
| | - A Schultz
- College of Medicine, Department of Paediatrics, University of Malawi, Lilongwe, Malawi; University Hospital Bonn, section global health, University of Bonn, Germany.
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James R, Admire B, Sisserson T, Cai Z, Dumas M, Inge L, Baumann J, Towne P, Dalvi D, ElGabry E. 1125P Analytical assessment of a diagnostic immunohistochemical assay for the detection of folate receptor-ɑ in epithelial ovarian cancers. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.767] [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: 11/28/2022] Open
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Pearson EJ, Baumann J, Murphy D. Mental health treatment experiences of commonwealth veterans from diverse ethnic backgrounds who have served in the UK military. BMJ Mil Health 2021; 168:20-24. [PMID: 33547196 DOI: 10.1136/bmjmilitary-2020-001495] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 01/08/2021] [Accepted: 01/09/2021] [Indexed: 11/03/2022]
Abstract
INTRODUCTION Research has shown that the likelihood of ex-military personnel developing mental health problems following service is around one in five. Little is known about the barriers to accessing mental health in veterans from diverse ethnic backgrounds. This study aims to explore mental health treatment experiences of veterans from commonwealth countries and therefore diverse ethnic backgrounds. METHODS Semi-structured interviews were conducted over the telephone with veterans from commonwealth countries. Veterans were recruited from a mental health charity and were at various stages of treatment. RESULTS We interviewed six veterans who were from a diverse range of commonwealth countries including St Lucia, Gambia, Ghana, Fiji and South Africa. All had served in the UK army in combat roles. Our findings consisted of key themes: (1) feeling that they are treated differently, (2) they felt as though they were unheard when reaching out for help, (3) systemic pressures such as financial difficulties, missed opportunities and lack of insight about mental health and (4) the importance of involving the wider community in care. CONCLUSION Our findings highlight some distinct barriers to mental health treatment that commonwealth veterans experience. The themes reported by the participants appear to suggest they had experience signs of institutional racism. Suggesting the importance of highlighting these issues, and to help overcome these potential barriers to accessing services. Given that commonwealth veterans involvement in the UK military is significant and increasing, the findings in this study should be used to support this population by implementing service provision and policy.
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Affiliation(s)
- E J Pearson
- Research, Combat Stress, Leatherhead, Surrey, UK
| | - J Baumann
- Research, Combat Stress, Leatherhead, Surrey, UK
| | - D Murphy
- Research, Combat Stress, Leatherhead, Surrey, UK.,UK Department of Psychological Medicine, Kings Centre for Military Health Research, Institute of Psychiatry, Psychology and Neuroscience, Kings College London, London, UK
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Pape J, Ackermann J, Schott S, Vogler F, Baumann J, Pahls J, Maass N, Alkatout I. Implementierung eines Ausbildungskurses für minimalinvasive Chirurgie in das Medizinstudium und Vergleich mit einem etablierten Kurs für Ärzte. Geburtshilfe Frauenheilkd 2020. [DOI: 10.1055/s-0040-1718082] [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: 10/23/2022] Open
Affiliation(s)
- J. Pape
- Universitätsklinikum Schleswig-Holstein, Campus Kiel/Gynäkologie und Geburtshilfe
| | - J. Ackermann
- Universitätsklinikum Schleswig-Holstein, Campus Kiel/Gynäkologie und Geburtshilfe
| | - S. Schott
- Universitätsklinikum Schleswig-Holstein, Campus Kiel/Gynäkologie und Geburtshilfe
| | - F. Vogler
- Universitätsklinikum Schleswig-Holstein, Campus Kiel/Gynäkologie und Geburtshilfe
| | - J. Baumann
- Universitätsklinikum Schleswig-Holstein, Campus Kiel/Gynäkologie und Geburtshilfe
| | - J. Pahls
- Universitätsklinikum Schleswig-Holstein, Campus Kiel/Gynäkologie und Geburtshilfe
| | - N. Maass
- Universitätsklinikum Schleswig-Holstein, Campus Kiel/Gynäkologie und Geburtshilfe
| | - I. Alkatout
- Universitätsklinikum Schleswig-Holstein, Campus Kiel/Gynäkologie und Geburtshilfe
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Werner T, Lehmann P, Baumann J, Kargl F, Tyburska-Püschel B. Gas-loading furnace for deuterium-charged alloy-casting. Rev Sci Instrum 2020; 91:043901. [PMID: 32357730 DOI: 10.1063/5.0004356] [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] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 03/30/2020] [Indexed: 06/11/2023]
Abstract
A furnace was developed and characterized to allow for safe and controlled gas-loading or degassing of alloys. This oven is able to process samples under varying atmospheres, such as high vacuum or nitrogen containing 10 vol. % deuterium, as well as for pressures up to 800 hPa. Thermal desorption spectroscopy and scanning electron microscopy demonstrate the enhancing effects of high loading-gas concentration, high pressures, high temperatures above liquidus (50-150 K above the liquidus temperature of the cast hypoeutectic aluminum-copper model-alloy), and long holding times (up to 60 min) on the amount of retained gas in the solidified sample. Lack of copper segregation in the casting is confirmed by energy dispersive x-ray diffraction and Rutherford backscattering spectroscopy. It is shown that the facility allows for the controlled generation of distinct amounts of gas pores, down to a nil amount (only shrinkage porosity appearing in the sample).
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Affiliation(s)
- T Werner
- Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt (DLR), 51147 Köln, Germany
| | - P Lehmann
- Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt (DLR), 51147 Köln, Germany
| | - J Baumann
- Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt (DLR), 51147 Köln, Germany
| | - F Kargl
- Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt (DLR), 51147 Köln, Germany
| | - B Tyburska-Püschel
- Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt (DLR), 51147 Köln, Germany
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Baumann J, Ackermann J, Holthaus B, Noé G, Maass N, Alkatout I. Evaluation eines neuartigen Pelvitrainers im Rahmen eines strukturierten Kurses für minimalinvasive Chirurgie in einem interdisziplinären und multizentrischen Setting. Geburtshilfe Frauenheilkd 2018. [DOI: 10.1055/s-0038-1671082] [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: 10/28/2022] Open
Affiliation(s)
- J Baumann
- Klinik für Gynäkologie und Geburtshilfe, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Kiel School of Gynaecological Endoscopy, Kiel, Deutschland
| | - J Ackermann
- Klinik für Gynäkologie und Geburtshilfe, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Kiel School of Gynaecological Endoscopy, Kiel, Deutschland
| | - B Holthaus
- Klinik für Gynäkologie und Geburtshilfe, Krankenhaus St. Elisabeth, Damme, Deutschland
| | - G Noé
- Klinik für Gynäkologie und Geburtshilfe, Kreiskrankenhaus Dormagen, Dormagen, Deutschland
| | - N Maass
- Klinik für Gynäkologie und Geburtshilfe, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Kiel School of Gynaecological Endoscopy, Kiel, Deutschland
| | - I Alkatout
- Klinik für Gynäkologie und Geburtshilfe, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Kiel School of Gynaecological Endoscopy, Kiel, Deutschland
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Masjosthusmann S, Barenys M, Baumann J, Bendt F, Becker D, Deenen R, Förster N, Mosig A, Hübenthal U, Klose J, Köhrer K, Petzuch B, Schmuck M, Temme T, Fritsche E. Molecular and chemical response signatures illustrate species differences of developing neural progenitor cells from human, mouse and rat. Toxicol Lett 2018. [DOI: 10.1016/j.toxlet.2018.06.055] [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: 10/28/2022]
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Abstract
PURPOSE Within an overarching evaluation framework, this study explored the experiences of course participants and administrators of an intercountry master's degree in nursing between South Africa and Mozambique. The lessons learnt were used to inform nursing and health policy for the Mozambican health system. METHODS Kirkpatrick's four levels of training evaluation and a results-oriented approach to capacity change were integrated to form a hybrid evaluation framework to capture information about course implementation and the context/environment within which it was delivered. The study used quantitative and qualitative methods including a self-administered survey of course participants, document review, in-depth, semi-structured interviews with course administrators and two focus group discussions with course participants. FINDINGS Participants enrolled in the course primarily to gain new knowledge and to improve health outcomes; course participants and administrators responded positively to the course design, course implementation and the quality of teaching. Knowledge and skills gained help to build graduates' confidence and boost their attitude towards nursing. Paradoxically, graduates felt powerless to transfer knowledge and effect change in practice. CONCLUSION This collaborative, capacity development project produced postgraduate nurses in two areas of specialization, namely, critical care and trauma nursing and maternal and neonatal health. While course participants gained significant benefits in new skills and knowledge and a higher degree qualification, the rewards available to them in the public health system remain unclear. IMPLICATIONS FOR NURSING AND HEALTH POLICY Lessons learnt may serve to influence policy decisions about the role of the Ministry of Health and other stakeholders in sustaining the output and quality of postgraduate nurses for the Mozambican health system. A strategic approach informed by multilevel policies at government, organizational and managerial levels should be adopted to systematically minimize and remove barriers to the transfer and utilization of knowledge and skills in the workplace.
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Affiliation(s)
- J C Bruce
- School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - S Schmollgruber
- School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - J Baumann
- School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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Baumann J, Herzog C, Spanier M, Grötzsch D, Lühl L, Witte K, Jonas A, Günther S, Förste F, Hartmann R, Huth M, Kalok D, Steigenhöfer D, Krämer M, Holz T, Dietsch R, Strüder L, Kanngießer B, Mantouvalou I. Laboratory Setup for Scanning-Free Grazing Emission X-ray Fluorescence. Anal Chem 2017; 89:1965-1971. [PMID: 28105807 DOI: 10.1021/acs.analchem.6b04449] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Grazing incidence and grazing emission X-ray fluorescence spectroscopy (GI/GE-XRF) are techniques that enable nondestructive, quantitative analysis of elemental depth profiles with a resolution in the nanometer regime. A laboratory setup for soft X-ray GEXRF measurements is presented. Reasonable measurement times could be achieved by combining a highly brilliant laser produced plasma (LPP) source with a scanning-free GEXRF setup, providing a large solid angle of detection. The detector, a pnCCD, was operated in a single photon counting mode in order to utilize its energy dispersive properties. GEXRF profiles of the Ni-Lα,β line of a nickel-carbon multilayer sample, which displays a lateral (bi)layer thickness gradient, were recorded at several positions. Simulations of theoretical profiles predicted a prominent intensity minimum at grazing emission angles between 5° and 12°, depending strongly on the bilayer thickness of the sample. This information was used to retrieve the bilayer thickness gradient. The results are in good agreement with values obtained by X-ray reflectometry, conventional X-ray fluorescence and transmission electron microscopy measurements and serve as proof-of-principle for the realized GEXRF setup. The presented work demonstrates the potential of nanometer resolved elemental depth profiling in the soft X-ray range with a laboratory source, opening, for example, the possibility of in-line or even in situ process control in semiconductor industry.
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Affiliation(s)
- J Baumann
- Technical University of Berlin , Institute of Optics and Atomic Physics, Hardenbergstraße 36, D-10587 Berlin, Germany.,Humboldt University of Berlin , School of Analytical Sciences Adlershof (IRIS-Building), Unter den Linden 6, D-10099 Berlin, Germany
| | - C Herzog
- Technical University of Berlin , Institute of Optics and Atomic Physics, Hardenbergstraße 36, D-10587 Berlin, Germany
| | - M Spanier
- Technical University of Berlin , Institute of Optics and Atomic Physics, Hardenbergstraße 36, D-10587 Berlin, Germany
| | - D Grötzsch
- Technical University of Berlin , Institute of Optics and Atomic Physics, Hardenbergstraße 36, D-10587 Berlin, Germany
| | - L Lühl
- Technical University of Berlin , Institute of Optics and Atomic Physics, Hardenbergstraße 36, D-10587 Berlin, Germany
| | - K Witte
- Technical University of Berlin , Institute of Optics and Atomic Physics, Hardenbergstraße 36, D-10587 Berlin, Germany
| | - A Jonas
- Technical University of Berlin , Institute of Optics and Atomic Physics, Hardenbergstraße 36, D-10587 Berlin, Germany
| | - S Günther
- Technical University of Berlin , Institute of Optics and Atomic Physics, Hardenbergstraße 36, D-10587 Berlin, Germany
| | - F Förste
- Technical University of Berlin , Institute of Optics and Atomic Physics, Hardenbergstraße 36, D-10587 Berlin, Germany
| | - R Hartmann
- PNSensor GmbH , Otto-Hahn-Ring 6, D-81739 München, Germany
| | - M Huth
- PNSensor GmbH , Otto-Hahn-Ring 6, D-81739 München, Germany
| | - D Kalok
- PNSensor GmbH , Otto-Hahn-Ring 6, D-81739 München, Germany
| | - D Steigenhöfer
- PNSensor GmbH , Otto-Hahn-Ring 6, D-81739 München, Germany
| | - M Krämer
- AXO DRESDEN GmbH , Gasanstaltstraße 8b, D-01237 Dresden, Germany
| | - T Holz
- AXO DRESDEN GmbH , Gasanstaltstraße 8b, D-01237 Dresden, Germany
| | - R Dietsch
- AXO DRESDEN GmbH , Gasanstaltstraße 8b, D-01237 Dresden, Germany
| | - L Strüder
- PNSensor GmbH , Otto-Hahn-Ring 6, D-81739 München, Germany.,University of Siegen , Department of Physics, Walter-Flex-Straße 3, D-57068 Siegen, Germany
| | - B Kanngießer
- Technical University of Berlin , Institute of Optics and Atomic Physics, Hardenbergstraße 36, D-10587 Berlin, Germany
| | - I Mantouvalou
- Technical University of Berlin , Institute of Optics and Atomic Physics, Hardenbergstraße 36, D-10587 Berlin, Germany
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Abstract
In cystic fibrosis (CF) mucociliary clearance of the entire respiratory system is impaired. This allows pathogens, such as Pseudomonas aeruginosa to persist and proliferate, which by progressive pulmonary destruction causes 90 % of premature deaths due to this inherited disease. The dramatic improvement in life expectation of patients due to intensive therapy has resulted in the inevitable but variably expressed sinonasal involvement coming into the clinical and scientific focus. Thereby, almost all CF patients reveal sinonasal pathology and many suffer from chronic rhinosinusitis. Recently, the sinonasal niche has been recognized as a site of initial and persistent colonization by pathogens. This article presents the pathophysiological background of this multiorgan disease as well as general diagnostic and therapeutic standards. The focus of this article is on sinonasal involvement and conservative and surgical options for treatment. Prevention of pathogen acquisition is an essential issue in the otorhinolaryngological treatment of CF patients.
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Affiliation(s)
- J G Mainz
- Mukoviszidosezentrum für Kinder und Erwachsene, Universitätsklinikum Jena, Jena, Deutschland
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Mehana AE, Straetener J, Baumann J, Perakakis N, Laubner K, Seufert J, Päth G. Preserved insulin response of Nupr1-transgenic islets during diabetogenic injury is correlated with reduced secretion of IL-1beta and enhanced secretion of IL-1 receptor antagonist. DIABETOL STOFFWECHS 2015. [DOI: 10.1055/s-0035-1549755] [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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Mehana AE, Pilz I, Dufner B, Jäger C, Sojka S, Baumann J, Alt M, Liu C, Mihic-Necic B, Parsons L, Perakakis N, Laubner K, Päth G, Seufert J. The anti-inflammatory protein NUPR1 (p8) is a novel intracellular mediator of pancreatic β-cell protection during diabetogenic stress in vitro and in vivo. DIABETOL STOFFWECHS 2014. [DOI: 10.1055/s-0034-1374962] [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: 10/25/2022]
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Mihic-Necic B, Mehana AE, Liu C, Parsons L, Baumann J, Perakakis N, Laubner K, Seufert J, Päth G. The anti-inflammatory protein NUPR1 protects pancreatic islets from diabetogenic lipotoxic injury ex vivo. DIABETOL STOFFWECHS 2014. [DOI: 10.1055/s-0034-1374927] [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: 10/25/2022]
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Liu C, Lang L, Mehana AE, Mihic-Necic B, Parsons L, Baumann J, Jäger C, Perakakis N, Laubner K, Seufert J, Päth G. Humoral factors by human bone marrow-derived MSC enhance beta cell proliferation via ERK1/2 signalling. DIABETOL STOFFWECHS 2014. [DOI: 10.1055/s-0034-1374923] [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: 10/25/2022]
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Mihic-Necic B, Mehana AE, Parsons L, Liu C, Baumann J, Perakakis N, Laubner K, Seufert J, Päth G. The anti-inflammatory protein p8 protects pancreatic islets from diabetogenic lipotoxic injury ex vivo. Exp Clin Endocrinol Diabetes 2014. [DOI: 10.1055/s-0034-1372022] [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: 10/25/2022]
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Mehana AE, Pilz I, Dufner B, Jäger C, Sojka S, Baumann J, Alt M, Liu C, Perakakis N, Laubner K, Mihic-Necic B, Päth G, Seufert J. p8 is a novel intracellular mediator of pancreatic β-cell protection that preserves insulin secretory function during inflammatory cell stress in vivo. Exp Clin Endocrinol Diabetes 2014. [DOI: 10.1055/s-0034-1372020] [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: 10/25/2022]
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Liu C, Lang L, Mihic-Necic BB, Mehana AE, Baumann J, Perakakis N, Laubner K, Seufert J, Päth G. Humoral factors by human bone marrow-derived MSC enhance beta cell proliferation via ERK1/2 signalling. Exp Clin Endocrinol Diabetes 2014. [DOI: 10.1055/s-0034-1372024] [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: 10/25/2022]
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Liu C, Lang L, Jäger C, Baumann J, Schmid M, Mehana AE, Alt M, Sojka S, Perakakis N, Laubner K, Päth G, Seufert J. Humoral factors by bone marrow-derived MSC enhance survival of injured β-cells by preserving AKT signalling. DIABETOL STOFFWECHS 2013. [DOI: 10.1055/s-0033-1341757] [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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Mehana AE, Pilz I, Dufner B, Jäger C, Sojka S, Baumann J, Alt M, Liu C, Perakakis N, Laubner K, Päth G, Seufert J. p8 is a novel intracellular mediator of pancreatic beta cell protection that preserves insulin secretory function during inflammatory stress in vivo. DIABETOL STOFFWECHS 2013. [DOI: 10.1055/s-0033-1341712] [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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Mehana AE, Pilz I, Dufner B, Jäger C, Sojka S, Baumann J, Alt M, Seufert J, Päth G. Intracellular p8 mediates potent protection of insulin secretory function during inflammatory beta cell stress. Exp Clin Endocrinol Diabetes 2013. [DOI: 10.1055/s-0033-1336632] [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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Liu C, Lang L, Schmid M, Jäger C, Sojka S, Baumann J, Päth G, Seufert J. Bone marrow-derived MSC enhance survival of injured β-cells by preserving Akt signalling via humoral factors. Exp Clin Endocrinol Diabetes 2013. [DOI: 10.1055/s-0033-1336723] [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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Mehana AE, Pilz IH, Dufner B, Jäger C, Sojka S, Baumann J, Alt M, Seufert J, Päth G. Verbesserte Glucosetoleranz in transgenen Mäusen mit β-zellspezifischer Überproduktion des Proteins p8 nach Hochfettdiät und Insulitis. DIABETOL STOFFWECHS 2012. [DOI: 10.1055/s-0032-1314528] [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: 10/28/2022]
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Berntorp E, Keeling D, Makris M, Tagliaferri A, Male C, Mauser-Bunschoten EP, Musso R, Roca CA, Hassoun A, Kollmer C, Charnigo R, Baumann J, Rendo P. A prospective registry of European haemophilia B patients receiving nonacog alfa, recombinant human factor IX, for usual use. Haemophilia 2011; 18:503-9. [PMID: 22044794 DOI: 10.1111/j.1365-2516.2011.02685.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Nonacog alfa, a recombinant factor IX (FIX) used for the treatment of haemophilia B, was approved in Europe in 1998. In accordance with European Medicines Agency requirements, a registry study was conducted from 2002 to 2009. A reformulated iso-osmotic version was approved for European use in 2007. This study was conducted to evaluate the safety of nonacog alfa in a usual care setting, and provide clinical trial and postmarketing surveillance data support. This open-label, non-interventional, prospective observational cohort study (registry) comprised 52 sites in nine European countries. Patients with haemophilia B receiving nonacog alfa in either formulation for prevention or treatment were followed on a usual care schedule. A total of 218 patients were enrolled, of whom 66 (30.3%) were <18 years of age. Haemophilia severity was evenly distributed, with baseline FIX activity of <1%, 1-5% and >5% in 33.3%, 36.6% and 30.1% of patients, respectively. One hundred thirty-eight patients received the original formulation alone; 80 switched to or received only the new formulation. There was a low incidence of events of special interest (ESIs), with less-than-expected therapeutic effect in five patients (2.2%), inhibitor development in two (0.9%), thrombosis in one (0.5%) and allergic events in eight (3.7%). These accounted for the majority of the 15 serious AEs reported in six patients. Six patients discontinued because of AEs, primarily related to hypersensitivity. Nonacog alfa was shown to be safe for the treatment of haemophilia B, with a low incidence of serious AEs and ESIs.
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Affiliation(s)
- E Berntorp
- Malmö Centre for Thrombosis and Haemostasis, Lund University, Skåne University Hospital, SE-205 02, Malmö, Sweden.
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Chung CH, Aulino J, Muldowney NJ, Hatakeyama H, Baumann J, Burkey B, Netterville J, Sinard R, Yarbrough WG, Cmelak AJ, Slebos RJ, Shyr Y, Parker J, Gilbert J, Murphy BA. Nuclear factor-kappa B pathway and response in a phase II trial of bortezomib and docetaxel in patients with recurrent and/or metastatic head and neck squamous cell carcinoma. Ann Oncol 2009; 21:864-870. [PMID: 19850643 DOI: 10.1093/annonc/mdp390] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Our previous study has shown that nuclear factor-kappa B (NF-kappaB)-signaling pathway was associated with a higher rate of recurrence in head and neck squamous cell carcinoma (HNSCC). The combination of bortezomib, an NF-kappaB inhibitor by inhibition of proteasomes, plus docetaxel was assessed for efficacy and toxicity. MATERIALS AND METHODS Patients with recurrent and/or metastatic HNSCC were enrolled on a phase II bortezomib/docetaxel trial (bortezomib 1.6 mg/m(2) and docetaxel 40 mg/m(2) on days 1 and 8 of a 21-day cycle). Response was assessed using RECIST. Tissue specimens were evaluated for the presence of human papillomavirus (HPV) and expression of NF-kappaB-associated genes. RESULTS Twenty-one of 25 enrolled patients were assessable for response; one partial response (PR, 5%), 10 stable disease (SD, 48%) and 10 progressive disease (PD, 48%). Patients with PR/SD had significantly longer survival compared with patients with PD and the regimen was well tolerated. Only one of 20 tumors was positive for HPV. Patients with PD had higher expression of NF-kappaB and epidermal growth factor receptor-associated genes in their tumors by gene expression analysis. CONCLUSION Further understanding of treatment resistance and interactions between bortezomib and docetaxel may provide novel approaches in managing HNSCC.
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Affiliation(s)
- C H Chung
- Division of Hematology/Oncology, Department of Medicine; Department of Cancer Biology, Vanderbilt University School of Medicine; Vanderbilt-Ingram Comprehensive Cancer Center.
| | | | | | - H Hatakeyama
- Division of Hematology/Oncology, Department of Medicine
| | - J Baumann
- Division of Hematology/Oncology, Department of Medicine
| | | | | | | | - W G Yarbrough
- Department of Cancer Biology, Vanderbilt University School of Medicine; Vanderbilt-Ingram Comprehensive Cancer Center; Department of Otolaryngology
| | | | - R J Slebos
- Department of Cancer Biology, Vanderbilt University School of Medicine
| | - Y Shyr
- Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, TN
| | - J Parker
- Expression Analysis, Inc., Durham, NC, USA
| | - J Gilbert
- Division of Hematology/Oncology, Department of Medicine
| | - B A Murphy
- Division of Hematology/Oncology, Department of Medicine
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Baumann J. Results of treatment of certain diseases of the central nervous system with ACTH and corticosteroids. Acta Neurol Scand Suppl 2009; 13 Pt 2:453-61. [PMID: 4284452 DOI: 10.1111/j.1600-0404.1965.tb01914.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Engelhardt M, Kottler C, Bunk O, David C, Schroer C, Baumann J, Schuster M, Pfeiffer F. The fractional Talbot effect in differential x-ray phase-contrast imaging for extended and polychromatic x-ray sources. J Microsc 2008. [PMID: 19017212 DOI: 10.1111/j.1365‐2818.2008.02072.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The influence of different physical parameters, such as the source size and the energy spectrum, on the functional capability of a grating interferometer applied for phase-contrast imaging is discussed using numerical simulations based on Fresnel diffraction theory. The presented simulation results explain why the interferometer could be well combined with polychromatic laboratory x-ray sources in recent experiments. Furthermore, it is shown that the distance between the two gratings of the interferometer is not in general limited by the width of the photon energy spectrum. This implies that interferometers that give a further improved image quality for phase measurements can be designed, because the primary measurement signal for phase measurements can be increased by enlargement of this distance. Finally, the mathematical background and practical instructions for the quantitative evaluation of measurement data acquired with a polychromatic x-ray source are given.
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Martin F, Baumann J, Sémadéni G. Remarques sur les stimulations à contenu psycho-sensoriel en électro-encéphalographie La réaction d'arrêt dans les encéphalopathies. Eur Neurol 2008. [DOI: 10.1159/000140115] [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: 11/19/2022]
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Baumann J, Ghosh S, Szakmany T, Jancso G, Ferencz A, Roth E, Bogar L. Short-term effects of N-acetylcysteine and ischemic preconditioning in a canine model of hepatic ischemia-reperfusion injury. ACTA ACUST UNITED AC 2008; 41:226-30. [PMID: 18520151 DOI: 10.1159/000135707] [Citation(s) in RCA: 10] [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] [Subscribe] [Scholar Register] [Received: 08/13/2007] [Accepted: 03/18/2008] [Indexed: 12/29/2022]
Abstract
AIMS We evaluated the possibility that repeated ischemic preconditioning or N-acetylcysteine (NAC) could prevent ischemia-reperfusion injury as determined by indocyanine green plasma disappearance rate (ICG-PDR) or has favorable hemodynamic effects during reperfusion in an in vivo canine liver model. METHODS Under general anesthesia, 3 groups of mongrel dogs (n = 5 per group) were subjected to (1) 60-min hepatic ischemia, (2) same ischemia preceded by intravenous administration of 150 mg kg(-1) NAC, and (3) three episodes of IPC (10-min ischemia followed by 10-min reperfusion) prior to same ischemia. Hepatic reperfusion was maintained for a further 180 min, with hemodynamic and hepatic function parameters monitored throughout. RESULTS Plasma disappearance rate of indocyanine green and serum levels of aspartate transferase and alanine transferase showed no significant differences between groups. Although liver injury was obvious, reflected by hemodynamic, blood gas, and liver function tests, NAC and IPC failed to prevent decay in hepatic function in this canine model. CONCLUSION The results do not support the hypothesis that short-term use of NAC and IPC is beneficial in hepatic surgery.
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Affiliation(s)
- J Baumann
- Department of Anaesthesiology and Intensive Therapy, University of Pécs, Pécs, Hungary
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Tschudi P, Conen D, Baumann J, Martina B. [False non-response in hypertensive patients treated in general practice]. Praxis (Bern 1994) 2008; 97:543-547. [PMID: 18595369 DOI: 10.1024/1661-8157.97.10.543] [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: 05/26/2023]
Abstract
Many hypertensive patients still have elevated blood pressure values despite antihypertensive treatment. However, which patients really do not respond to antihypertensive treatment? 41 primary care patients with treated essential arterial hypertension with office blood pressure > 140/90 mmHg received 24-hour ambulatory blood pressure measurement. The patients were categorized into a group with elevated blood pressure both in office (> or = 140/90 mmHg) and daytime ambulatory blood pressure measurement (> 135/85 mmHg) and into a group with False Non-Response to treatment (office blood pressure > or = 140/90 mmHg but normal daytime mean ambulatory blood pressure < 135/85 mmHg). Patients in the group with False NonResponse were significantly more likely to be female compared to patients with both office and ambulatory hypertension (67% vs. 23%, p = 0.009), whereas diabetes mellitus was a significant predictor of elevated blood pressure both in office and ambulatory measurement (7% vs. 39%, p = 0.033). False-Non-Response is common in primary care patients treated for hypertension. These patients have normal ambulatory BP values despite elevated office BP values. Female gender and absence of diabetes mellitus are significant predictors of False Non-response to antihypertensive treatment.
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Affiliation(s)
- P Tschudi
- Institut für Hausarztmedizin, Universität Basel.
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Vrana J, Goldammer M, Baumann J, Rothenfusser M, Arnold W, Thompson DO, Chimenti DE. MECHANISMS AND MODELS FOR CRACK DETECTION WITH INDUCTION THERMOGRAPHY. ACTA ACUST UNITED AC 2008. [DOI: 10.1063/1.2902698] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Martin F, Baumann J, Semadéni G. Remarques sur les stimulations à contenu psycho-sensoriel en électro-encéphalographie. Stereotact Funct Neurosurg 2007. [DOI: 10.1159/000105709] [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: 11/19/2022]
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Lindner J, Richter K, Zwinzscher S, Baumann J, Forbrig M. Kognitive Leistungsbreite und Behandlungsstrategien bei geriatrisch versorgten Typ 2-Diabetikern. DIABETOL STOFFWECHS 2006. [DOI: 10.1055/s-2006-943982] [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]
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Krimmel S, Baumann J, Kiss Z, Kuba A, Nagy A, Stephan J. Discrete tomography for reconstruction from limited view angles in non-destructive testing. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.endm.2005.05.078] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Schillinger B, Baumann J, Gebele H, Schaetzing R, Schaller H, Schuster M. A new fast and large area neutron detector using a novel image plate readout technique. Appl Radiat Isot 2004; 61:451-4. [PMID: 15246382 DOI: 10.1016/j.apradiso.2004.03.093] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
At Agfa Medical Imaging Systems, a new type of image plate scanner is being developed. Instead of scanning the irradiated image plate with a single laser and reading the luminescence information with a single light collector and photomultiplier, the new system employs a whole line of laser diodes and a set of CCD line sensors. This technique allows for virtually unlimited detection areas and a very fast readout.
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Affiliation(s)
- B Schillinger
- Physik-Department E21, Technische Universität München, FRM-II, Lichtenbergstr. 1, D-85747 Garching, Germany.
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Dorfman RC, Lin Y, Zimmt MB, Baumann J, Domingue RP, Fayer MD. Photoinduced electron transfer and back transfer in systems of randomly distributed donors and acceptors: picosecond transient grating experiments. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100326a002] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [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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Hardouin A, Baumann J, Roussel G, Quillien V, Dugast C, Berthet P. A new mutation in the BRCA1 gene (g.5196-5201del6, 5195-5202ins12), a 6 bp deletion replaced by the duplication of a 12 bp adjacent upstream intronic sequence. Hum Mutat 2001; 17:154. [PMID: 11180603 DOI: 10.1002/1098-1004(200102)17:2<154::aid-humu12>3.0.co;2-o] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- A Hardouin
- Laboratory of Clinical Biology; Centre François Baclesse, Caen, France
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Zenner HP, Leysieffer H, Maassen M, Lehner R, Lenarz T, Baumann J, Keiner S, Plinkert PK, McElveen JT. Human studies of a piezoelectric transducer and a microphone for a totally implantable electronic hearing device. Am J Otol 2000; 21:196-204. [PMID: 10733184 DOI: 10.1016/s0196-0709(00)80009-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
OBJECTIVE For the surgical treatment of patients with moderate and severe sensorineural hearing loss, the authors have developed a totally implantable hearing device, the totally integrated cochlea amplifier (TICA). To evaluate the effectiveness of transducer and microphone of this device, three separate human studies were conducted. STUDY DESIGN The first study using transducer prototypes involved self experiments in investigators with normal hearing. The second study used the transducer prototypes in patients with hearing loss, and the third study involved the temporary implantation of the final transducer prototype and microphone in patients undergoing otologic surgery. PATIENTS In routine middle ear surgery, transducer prototypes were coupled to the ossicular chain of 28 patients. In addition to the transducer, in 5 patients the microphone was placed beneath the skin of the auditory canal, allowing the skin to cover the microphone membrane completely. RESULTS The piezoelectric transducer reached an equivalent sound pressure level of 145 dB SPL < or =10 kHz. The dynamics for music reached 32 dB, which was identical with the results of the preoperative investigations using high-fidelity headsets (33 dB). The low nonlinear distortions of <0.1% and the frequency range of 10 kHz are reflected in the positive evaluation of the sound quality by 84% of the patients involved. When phonetically balanced speech material and music were presented under free field conditions at a sound level of 65 dB SPL, understanding of the phonetically balanced speech material was 100%. Most patients judged the presentations of music as clear and undistorted with all broadband components. CONCLUSIONS Data in humans on the performance of the two main components of the TICA implant, the transducer and the microphone, are reported.
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Affiliation(s)
- H P Zenner
- Department of Otolaryngology, University of Tübingen, Germany
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Abstract
Nondestructive testing of adhesive joints is of great interest. The method of second harmonic generation promises to give early information about failure of adhesive layers. In the case of resonance the amplitude of strain in a soft interface layer is strongly increased and, therefore, the layer considerably contributes to A2, the amplitude of the second harmonic. The nonlinear behavior of such a layer and its influence on A2 was studied by means of the finite element method. In the experimental situation all materials along the sound path contribute to A2. The dependence of the calculated and measured effects on the layer thickness, the velocity of sound, and the nonlinearity coefficient beta are reported.
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Kruse FE, Joussen AM, Rohrschneider K, You L, Sinn B, Baumann J, Völcker HE. Cryopreserved human amniotic membrane for ocular surface reconstruction. Graefes Arch Clin Exp Ophthalmol 2000; 238:68-75. [PMID: 10664056 DOI: 10.1007/s004170050012] [Citation(s) in RCA: 135] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Amniotic membrane transplantation is used for the reconstruction of the ocular surface in the context of, for example, corneal ulcers or conjunctival scarring. The mechanisms by which preserved amniotic membrane grafts promote reepithelialization are unknown. As a first step the viability and proliferative capacity of amnion cells following cryopreservation of membranes in glycerol is investigated. METHODS Fresh and cryopreserved (in 50% glycerol) amniotic membranes were investigated histologically and by vital stains. Following enzymatic digestion, amniotic cells were stained for viability and cultured in DMEM+10% FBS. In addition, explant cultures were established from fresh and cryopreserved membranes. RESULTS Histological examination showed no significant morphological alteration following cryopreservation. While fresh membranes contained predominantly vital cells, no such cells were detected following cryopreservation. Also, cells removed enzymatically from cryopreserved membranes were not viable and did not grow in culture. While both epithelial and fibroblastic cells grew from fresh membranes, no growth was seen from cryopreserved membranes. CONCLUSION The results suggest that the technique for preservation which is most widely used for ophthalmological amniotic membrane transplantation significantly impairs viability and proliferative capacity. This supports the clinical finding that neither immunological reactions nor signs of ingrowth of amniotic cells are observed in patients. Furthermore amniotic membrane grafts seem to function primarily as matrix and not by virtue of transplanted functional cells.
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Affiliation(s)
- F E Kruse
- Augenklinik der Universität Heidelberg, INF 400, D-69120 Heidelberg, Germany.
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