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López-Vicente M, Kramer H, Keesstra S. Effectiveness of soil erosion barriers to reduce sediment connectivity at small basin scale in a fire-affected forest. J Environ Manage 2021; 278:111510. [PMID: 33120091 DOI: 10.1016/j.jenvman.2020.111510] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 08/30/2020] [Accepted: 10/11/2020] [Indexed: 06/11/2023]
Abstract
Forest fires and post-fire management practices (PFMP) cause changes in the hydrological response of a hillslope. This study evaluates the effect of log erosion barriers (LB) and Easy-Barriers® (EB) on the spatial patterns and values of structural sediment connectivity (SC) in a Mediterranean mountainous pine forest affected by an arson fire in August 2017. A drone flight was done in July 2019 (23 months after the fire and 11 months after the PFMP) to obtain a high-resolution orthomosaic and DEM (at 0.05 m). Two contrasted areas, with and without PFMP, were selected along the same hillslope and 26 small basins were identified: 16 in the treated area (mean area, slope and vegetation recovery of 916 m2, 60% and 25%; with 94 LB and 39 EB) and 10 in the untreated area (1952 m2, 75% and 20%). The aggregated index of sediment connectivity (AIC) was chosen to compute SC in three temporal scenarios: Before and just after the fire and when all PFMP were implemented including the incipient vegetation recovery. Output normalization allowed the comparison of the non-nested basins among them. After accounting the intrinsic differences among the basins and areas, and the temporal changes of SC between the three scenarios, the contribution of the barriers was estimated in 27% from the total decrease of SC in the treated area (-8.5%). The remaining 73% was explained by the vegetation recovery. The effectiveness of the LB (11.3% on average) and EB (13.4%) did not diminish with increasing slope gradients. These percentages become relevant considering the small area affected by the LB (2.8%) and EB (1.3%). Independent metrics (convergence index, flow width, flat areas and LS factor) also reported clear differences between the two areas -higher soil erosive intensity in the untreated area- and in accordance with the AIC results.
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Affiliation(s)
- Manuel López-Vicente
- Team Soil, Water and Land Use, Wageningen Environmental Research, Droevendaalsesteeg 3, Wageningen, 6708RC, Netherlands.
| | - Henk Kramer
- Team Earth Informatics, Wageningen Environmental Research, Droevendaalsesteeg 3, Wageningen, 6708RC, Netherlands.
| | - Saskia Keesstra
- Team Soil, Water and Land Use, Wageningen Environmental Research, Droevendaalsesteeg 3, Wageningen, 6708RC, Netherlands.
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Kelley K, Jimenez E, Kramer H, Schofield M, Steiber A, Abram J, Brommage D. RDN Perspectives on Barriers to MNT Access for Individuals with Non-Dialysis Dependent CKD. J Acad Nutr Diet 2020. [DOI: 10.1016/j.jand.2020.06.243] [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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Kramer H, Lehmann J, Klapp C, Layer C, Mais A, Kriwy P. [Is there also a gynecologist for men? : A randomised controlled trial of ÄGGF information sessions in schools as a bridge to the urologist's consultations with boys]. Urologe A 2019; 57:1230-1239. [PMID: 29797024 DOI: 10.1007/s00120-018-0676-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND There are hardly any prevention programmes for health education and communication for boys in Germany. Boys seldom know when, how and to whom to turn to for questions or problems in the field of sexual and reproductive health. METHODS From 2014-2016 the Medical Society for Health Promotion carried out a unique project for gender-sensitive medical health promotion for boys of all school types at 130 Bavarian schools. In 2015, 15 Bavarian schools took part in the evaluation (6th, 8th, 9th and 11th grade). At school level, similar schools have been randomised to trial and control groups. In the experimental group, three waves were conducted in panel design and two interviews were conducted in the control group using paper questionnaires. The number of cases in the panel is 599 (358 intervention group, 241 waiting control group). RESULTS In all school types and grade levels, a highly significant increase in knowledge can be demonstrated. There is an average of 28% of the intervention group's overall knowledge improvement compared to the control group. More than 50% of the participants consider themselves to be very well informed before the intervention, although the objectively available knowledge does not justify this (e. g. average proportion of correctly answered questions on male anatomy and physiology 0.7 out of 6). The participants rate the medical information sessions and the fact that they are conducted by doctors with 1.7 or 1.6 (1: very good, to 5: poor). DISCUSSION Boys urgently need proper knowledge transfer in the field of sexual health. They benefit regardless of the types of school from these health information sessions. The gender-sensitive and socially compensatory medical information sessions are highly accepted, effective and serve as a bridge to the general practitioners. A nationwide establishment of the intervention seems thus absolutely necessary.
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Affiliation(s)
- H Kramer
- Ärztliche Gesellschaft zur Gesundheitsförderung e. V. (ÄGGF), Hamburg, Deutschland
| | - J Lehmann
- Institut für Soziologie, Georg-August-Universität, Göttingen, Deutschland
| | - C Klapp
- Ärztliche Gesellschaft zur Gesundheitsförderung e. V. (ÄGGF), Hamburg, Deutschland
| | - C Layer
- Ärztliche Gesellschaft zur Gesundheitsförderung e. V. (ÄGGF), Hamburg, Deutschland
| | - A Mais
- Ärztliche Gesellschaft zur Gesundheitsförderung e. V. (ÄGGF), Hamburg, Deutschland
| | - P Kriwy
- Institut für Soziologie, Technische Universität Chemnitz, Thüringer Weg 9, Chemnitz, 09126, Deutschland.
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Grab M, Frenzel S, Baumann A, Kramer H, Fabry T, Peter S, Pichlmaier M, Haas N, Hagl C, Thierfelder N. Development and Evaluation of 3D-Printed Aortic Phantoms for Multimodal Patient-Specific Therapy Planning. Thorac Cardiovasc Surg 2019. [DOI: 10.1055/s-0039-1678907] [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: 10/27/2022]
Affiliation(s)
- M. Grab
- LMU München, Herzchirurgische Klinik und Poliklinik, München, Germany
- TU München, Lehrstuhl für Medizintechnik, Garching, Germany
| | - S. Frenzel
- TU München, Lehrstuhl für Medizintechnik, Garching, Germany
| | - A. Baumann
- LMU München, Klinik und Poliklinik für Radiologie, München, Germany
| | - H. Kramer
- LMU München, Klinik und Poliklinik für Radiologie, München, Germany
| | - T. Fabry
- LMU München, Herzchirurgische Klinik und Poliklinik, München, Germany
| | - S. Peter
- LMU München, Herzchirurgische Klinik und Poliklinik, München, Germany
| | - M. Pichlmaier
- LMU München, Herzchirurgische Klinik und Poliklinik, München, Germany
| | - N. Haas
- LMU München, Kinderkardiologie und Pädiatrische Intensivmedizin, München, Germany
| | - C. Hagl
- LMU München, Herzchirurgische Klinik und Poliklinik, München, Germany
| | - N. Thierfelder
- LMU München, Herzchirurgische Klinik und Poliklinik, München, Germany
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Klapp C, Mais A, Kramer H, Isensee B. Primär- und Sekundärprävention ungeplanter Schwangerschaft – ein ärztliche Unterrichtseinheit in Schulen. Geburtshilfe Frauenheilkd 2018. [DOI: 10.1055/s-0038-1671609] [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)
- C Klapp
- Ärztliche Gesellschaft zur Gesundheitsförderung der Frau e.V. ÄGGF, Hamburg, Deutschland
- Charité – Universitätsmedizin Berlin, Klinik für Geburtsmedizin, Berlin, Deutschland
| | - A Mais
- Ärztliche Gesellschaft zur Gesundheitsförderung der Frau e.V. ÄGGF, Hamburg, Deutschland
| | - H Kramer
- Ärztliche Gesellschaft zur Gesundheitsförderung der Frau e.V. ÄGGF, Hamburg, Deutschland
| | - B Isensee
- Institut für Therapie- und Gesundheitsforschung IFT Mord, Kiel, Deutschland
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Kramer H. Schwanger? – Mein Kind trinkt mit! Alkohol? – Kein Schluck. Kein Risiko! Studienergebnisse zu Relevanz und Erfolg des BMG-ÄGGF-Projekts schulischer FASD-Primärprävention im Vorfeld von Schwangerschaften. Geburtshilfe Frauenheilkd 2018. [DOI: 10.1055/s-0038-1671622] [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)
- H Kramer
- Ärztliche Gesellschaft zur Gesundheitsförderung e.V., Spardorf, Deutschland
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Brouwer M, Kromhout H, Vermeulen R, Duyzer J, Kramer H, Hazeu G, de Snoo G, Huss A. Assessment of residential environmental exposure to pesticides from agricultural fields in the Netherlands. J Expo Sci Environ Epidemiol 2018; 28:173-181. [PMID: 28327632 DOI: 10.1038/jes.2017.3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 02/12/2017] [Indexed: 06/06/2023]
Abstract
We developed a spatio-temporal model for the Netherlands to estimate environmental exposure to individual agricultural pesticides at the residential address for application in a national case-control study on Parkinson's disease (PD). Data on agricultural land use and pesticide use were combined to estimate environmental exposure to pesticides for the period 1961 onwards. Distance categories of 0-50 m, >50-100 m, >100-500 m and >500-1000 m around residences were considered. For illustration purposes, exposure was estimated for the control population (n=607) in the PD case-control study. In a small validation effort, model estimates were compared with pesticide measurements in air and precipitation collected at 17 stations in 2000-2001. Estimated exposure prevalence was higher for pesticides used on commonly cultivated (rotating) crops than for pesticides used on fruit and bulbs only. Prevalence increased with increasing distance considered. Moderate-to-high correlations were observed between model estimates (>100-500 m and >500-1000 m) and environmental pesticide concentrations measured in 2000-2001. Environmental exposure to individual pesticides can be estimated using relevant spatial and temporal data sets on agricultural land use and pesticide use. Our approach seems to result in accurate estimates of average environmental exposure, although it remains to be investigated to what extent this reflect personal exposure to agricultural pesticides.
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Affiliation(s)
- Maartje Brouwer
- Division of Environmental Epidemiology, Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands
| | - Hans Kromhout
- Division of Environmental Epidemiology, Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands
| | - Roel Vermeulen
- Division of Environmental Epidemiology, Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands
- Julius Centre for Public Health Sciences and Primary Care, Utrecht University Medical Centre, Utrecht, The Netherlands
| | - Jan Duyzer
- Department Urban Environment, TNO Built Environment and Geosciences, Utrecht, The Netherlands
| | - Henk Kramer
- Earth Observation and Environmental Informatics, ALTERRA, Wageningen University & Research centre, Wageningen, The Netherlands
| | - Gerard Hazeu
- Spatial Knowledge Systems, ALTERRA, Wageningen University & Research Centre, Wageningen, The Netherlands
| | - Geert de Snoo
- Institute of Environmental Sciences, Leiden University, Leiden, The Netherlands
| | - Anke Huss
- Division of Environmental Epidemiology, Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands
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Slart RHJA, Koopmans KP, van Geel PP, Kramer H, Groen HJM, Gan CTJ, Prakken NHJ, Glaudemans AWJM, Nossent GD. Somatostatin receptor based hybrid imaging in sarcoidosis. Eur J Hybrid Imaging 2017; 1:7. [PMID: 29782604 PMCID: PMC5954781 DOI: 10.1186/s41824-017-0014-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 06/12/2017] [Accepted: 09/18/2017] [Indexed: 11/22/2022] Open
Abstract
Several diagnostic imaging methodologies are available for the clinical evaluation of sarcoidosis, but all have their limitations. FDG PET/CT is frequently used, but this technique does not provide optimal results in all cases. Novel radiopharmaceuticals aimed at other disease targets may be helpful, particularly in cardiac sarcoidosis when FDG PET/CT has a low diagnostic accuracy, due to difficulties in preparing the patients who should use a specific diet combined with prolonged fasting. 68Ga-labeled somatostatin based receptor hybrid imaging is a potential alternative to FDG PET/CT. This short communication provides a rapid overview of initial findings concerning the application of 68Ga-labeled somatostatin based receptor hybrid imaging in the diagnosis of (cardiac) sarcoidosis activity.
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Affiliation(s)
- Riemer H J A Slart
- Medical Imaging Center (MIC), Department of Nuclear Medicine & Molecular Imaging and Radiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, P.O. Box 30001, 9700 RB Groningen, The Netherlands
| | - Klaas-Pieter Koopmans
- 2Department of Nuclear Medicine and Radiology, Martini Hospital, Groningen, The Netherlands
| | | | - Henk Kramer
- 4Department of Pulmonology, Martini Hospital, Groningen, The Netherlands
| | - Harry J M Groen
- Department of Pulmonology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - C Tji-Joong Gan
- Department of Pulmonology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Niek H J Prakken
- Medical Imaging Center (MIC), Department of Nuclear Medicine & Molecular Imaging and Radiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, P.O. Box 30001, 9700 RB Groningen, The Netherlands
| | - Andor W J M Glaudemans
- Medical Imaging Center (MIC), Department of Nuclear Medicine & Molecular Imaging and Radiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, P.O. Box 30001, 9700 RB Groningen, The Netherlands
| | - George D Nossent
- Department of Pulmonology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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Rickers C, Andrade A, Jerosch-Herold M, Wegner P, Voges I, Pham M, Hart C, Gabbert D, Kristo I, Kramer H. Determinants of Left Ventricular Dysfunction and Remodeling in Patients with Corrected Tetralogy of Fallot (ToF). Thorac Cardiovasc Surg 2017. [DOI: 10.1055/s-0037-1598972] [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: 10/20/2022]
Affiliation(s)
- C. Rickers
- Department of Congenital Heart Disease and Paediatric Cardiology, University Hospital Schleswig-Holstein, Kiel, Germany
| | - A. Andrade
- Department of Congenital Heart Disease and Paediatric Cardiology, University Hospital Schleswig-Holstein, Kiel, Germany
| | | | - P. Wegner
- Department of Congenital Heart Disease and Paediatric Cardiology, University Hospital Schleswig-Holstein, Kiel, Germany
| | - I. Voges
- Department of Congenital Heart Disease and Paediatric Cardiology, University Hospital Schleswig-Holstein, Kiel, Germany
| | - M. Pham
- Department of Congenital Heart Disease and Paediatric Cardiology, University Hospital Schleswig-Holstein, Kiel, Germany
| | - C. Hart
- Department of Congenital Heart Disease and Paediatric Cardiology, University Hospital Schleswig-Holstein, Kiel, Germany
| | - D. Gabbert
- Department of Congenital Heart Disease and Paediatric Cardiology, University Hospital Schleswig-Holstein, Kiel, Germany
| | - I. Kristo
- Department of Congenital Heart Disease and Paediatric Cardiology, University Hospital Schleswig-Holstein, Kiel, Germany
| | - H. Kramer
- Department of Congenital Heart Disease and Paediatric Cardiology, University Hospital Schleswig-Holstein, Kiel, Germany
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Lehner A, Ulrich S, Dalla-Pozza R, Fischer M, Haas N, Curta A, Kramer H. 4D-Flow MRI in Patients with Fontan Circulation for Evaluation of Pulmonary Arterial Blood Distribution. Thorac Cardiovasc Surg 2017. [DOI: 10.1055/s-0037-1599025] [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: 10/20/2022]
Affiliation(s)
- A. Lehner
- Department of Pediatric Cardiology and Intensive Care, Ludwig Maximilian Universität München, München, Germany
| | - S. Ulrich
- Department of Pediatric Cardiology and Intensive Care, Ludwig Maximilian Universität München, München, Germany
| | - R. Dalla-Pozza
- Department of Pediatric Cardiology and Intensive Care, Ludwig Maximilian Universität München, München, Germany
| | - M. Fischer
- Department of Pediatric Cardiology and Intensive Care, Ludwig Maximilian Universität München, München, Germany
| | - N.A. Haas
- Department of Pediatric Cardiology and Intensive Care, Ludwig Maximilian Universität München, München, Germany
| | - A. Curta
- Deutsches Zentrum für Herz-Kreislauf-Forschung e.V., München, Germany
| | - H. Kramer
- Deutsches Zentrum für Herz-Kreislauf-Forschung e.V., München, Germany
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Kazmierczak P, Sommer W, Nickel D, Kiefer B, Reiser M, Kramer H. Optimierung des Läsion-zu-Leber-Kontrastes in der hepatobiliären Phase: intraindividueller Vergleich von spektraler Fettsättigung und Dixon-Technik bei unterschiedlichen Flipwinkeln. ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581305] [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]
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Armbruster M, Armbruster M, Nörenberg D, Hoffmann K, Andrassy J, Kramer H. Größenmessung hepatozellulärer Karzinome im MRT – Spielt die Sequenz eine Rolle? ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581309] [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]
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13
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Bannas P, Kramer H, Hernando D, Agni R, Cunningham A, Mandal R, Motosugi U, Sharma S, Munoz del Rio A, Adam G, Fernandez L, Reeder S. Quantitative MRT-Bildgebung der hepatischen Steatose: Ex vivo Validierung in humanen Lebern. ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581338] [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]
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Bannas P, Roldan-Alzate A, Johnson K, Woods M, Ozkan O, Motosugi U, Wieben O, Adam G, Reeder S, Kramer H. Visualisierung und Quantifizierung der Leberdurchblutung vor und nach TIPS mittels 4D-Fluss MRT. ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581508] [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]
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Curta A, Fichtner S, Wakili R, Estner H, Kramer H. Beurteilung der links atrialen Funktionsparameter im 3 Tesla MRT bei Patienten mit Vorhofflimmern und Zustand nach Pulmonalvenenisolation mit linearer Katheterablation. ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581437] [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]
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Hart C, Müller M, Scheewe J, Kramer H. Sinusknotendysfunktion im Langzeitverlauf beim Hypoplastischen Linksherzsyndrom (HLHS). Thorac Cardiovasc Surg 2016. [DOI: 10.1055/s-0036-1571860] [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]
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Al Bulushi A, Salehi R, Gabbert D, Wegner P, Kristo I, Fischer G, Scheewe J, Attmann T, Kramer H, Rickers C. The Impact of Systemic-to-Pulmonary Collateral Flow (SPCF) in Patients after Bidirectional Cavopulmonary Connection (BCPC) or Fontan Operation Assessed with 4D Flow MRI. Thorac Cardiovasc Surg 2016. [DOI: 10.1055/s-0036-1571879] [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]
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Salehi R, Attmann T, Scheewe J, Al Bulushi A, Gabbert D, Wegner P, Pardun E, Voges I, Hart C, Kristo I, Kramer H, Rickers C. The Effect of the Simultaneous Left Pulmonary Artery (LPA) Patch Enlargement during the Modified Norwood Procedure on the Lung Perfusion: First MRI Results of HLHS Patients. Thorac Cardiovasc Surg 2016. [DOI: 10.1055/s-0036-1571862] [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]
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Rotermann I, Hansen J, Scheewe J, Kramer H. Entwicklungs- und Intelligenzprofil von Vorschulkindern mit Univentrikulären Herzfehlern—Norwood-Operation ein Risikofaktor? Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1555981] [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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Pardun E, Wenzel K, Kramer H, Berger F, Gerull B, Klaassen S. Nexilin Mutations Are Associated with Left Ventricular Noncompaction Cardiomyopathy. Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1555972] [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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Hansen J, Rotermann I, Logoteta J, Herzog F, Rohr A, Rickers C, Attmann T, Kramer H. Neurokognitive Entwicklung und neuroradiologische Auffälligkeiten bei Patienten mit Hypoplastischem Linksherzsyndrom. Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1555980] [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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Arndt A, Beerens M, Kramer H, Klaassen S, MacRae C. PRDM16 - A Novel Key Player in Personalized Medicine. Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1555987] [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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Kristo I, Wegner P, Voges I, Jerosch-Herold M, Pham M, Gabbert D, Hart C, Kramer H, Rickers C. Diffuse Myocardial Fibrosis and Left Ventricular Diastolic Dysfunction is present in Children and Young Adults with Repaired Aortic Coarctation. Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1556041] [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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Hart C, Müller M, Scheewe J, Kramer H. Sinusknotendysfunktion (SND) im Langzeitverlauf beim Hypoplastischen Linksherzsyndrom (HLHS). Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1555978] [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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Kramer H, Jost G, Arnoldi E, Pietsch H, Reiser M. Intraindividueller Vergleich verschiedener Kontrastmittel-Applikationsschemata und deren Einfluss auf Konzentration, Signal und Bolusgeometrie bei der MRA. ROFO-FORTSCHR RONTG 2015. [DOI: 10.1055/s-0035-1550971] [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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Hetterich H, Bayerl C, Peters A, Meisinger C, Kramer H, Ertl-Wagner B, Reiser M, Bamberg F. Evaluation eines dreistufigen MRT-Protokolls zur Erkennung und Charakterisierung der Steatosis hepatis in einer gesunden Referenzpopulation. ROFO-FORTSCHR RONTG 2015. [DOI: 10.1055/s-0035-1550890] [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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Mais A, Layer C, Kramer H, Klapp C. Sti-Prävention die ankommt: Ein strukturiertes ärztliches Bildungsangebot für Jugendliche. Geburtshilfe Frauenheilkd 2014. [DOI: 10.1055/s-0034-1388249] [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: 10/24/2022] Open
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Kramer H, Kliewer MA, Pickhardt PJ, Hernando D, Chen GH, Reiser MF, Reeder SB. Genauigkeit der Leber-Fettquantifizierung mittels CT, MRT und Ultraschall: ein prospektiver Vergleich zur MR Spektroskopie. ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1372835] [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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Villa-Gomez DK, van Hullebusch ED, Maestro R, Farges F, Nikitenko S, Kramer H, Gonzalez-Gil G, Lens PNL. Morphology, mineralogy, and solid-liquid phase separation characteristics of Cu and Zn precipitates produced with biogenic sulfide. Environ Sci Technol 2013; 48:664-673. [PMID: 24164296 DOI: 10.1021/es402795x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The morphology, mineralogy, and solid-liquid phase separation of the Cu and Zn precipitates formed with sulfide produced in a sulfate-reducing bioreactor were studied at pH 3, 5, and 7. The precipitates formed at pH 7 display faster settling rates, better dewaterability, and higher concentrations of settleable solids as compared to the precipitates formed at pH 3 and 5. These differences were linked to the agglomeration of the sulfidic precipitates and coprecipitation of the phosphate added to the bioreactor influent. The Cu and Zn quenched the intensity of the dissolved organic matter peaks identified by fluorescence-excitation emission matrix spectroscopy, suggesting a binding mechanism that decreases supersaturation, especially at pH 5. X-ray absorption fine structure spectroscopy analyses confirmed the precipitation of Zn-S as sphalerite and Cu-S as covellite in all samples, but also revealed the presence of Zn sorbed on hydroxyapatite. These analyses further showed that CuS structures remained amorphous regardless of the pH, whereas the ZnS structure was more organized at pH 5 as compared to the ZnS formed at pH 3 and 7, in agreement with the cubic sphalerite-type structures observed through scanning electron microscopy at pH 5.
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Affiliation(s)
- D K Villa-Gomez
- Pollution Prevention and Resource Recovery Chair Group, UNESCO-IHE Institute for Water Education , P.O. Box 3015, 2601 DA Delft, The Netherlands
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Kramer H, Corcos AR, Hernando D, Berry JF, Schiebler ML, Reeder SB. Effekt von molekularem Sauerstoff auf Relaxationszeiten bei klinischen Feldstärken. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1346217] [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: 10/26/2022]
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Kramer H, Arnoldi E, Francois CJ, Wentland AL, Nikolaou K, Wintersperger BJ, Reiser MF, Grist TM. MR Angiografie (MRA) der supraaortalen Gefäße bei 3,0 T: intraindividueller Vergleich Gd-basierter Kontrastmittel. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1346403] [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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Bloomfield GS, Yi SS, Astor BC, Kramer H, Shea S, Shlipak MG, Post WS. Blood pressure and chronic kidney disease progression in a multi-racial cohort: the Multi-Ethnic Study of Atherosclerosis. J Hum Hypertens 2013; 27:421-6. [PMID: 23407373 DOI: 10.1038/jhh.2013.1] [Citation(s) in RCA: 13] [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] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The relationship between blood pressure (BP) and kidney function among individuals with chronic kidney disease (CKD) remains controversial. This study evaluated the association between BP and estimated glomerular filtration rate (eGFR) decline among adults with nondiabetic stage 3 CKD. The Multi-Ethnic Study of Atherosclerosis participants with an eGFR 30-59 ml min(-1) per 1.73 m2 at baseline without diabetes were included. Participants were followed over a 5-year period. Kidney function change was determined by annualizing the change in eGFR using cystatin C, creatinine and a combined equation. Risk factors for progression of CKD (defined as a decrease in annualized eGFR>2.5 ml min(-1) per 1.73 m2) were identified using univariate analyses and sequential logistic regression models. There were 220 participants with stage 3 CKD at baseline using cystatin C, 483 participants using creatinine and 381 participants using the combined equation. The median (interquartile range) age of the sample was 74 (68-79) years. The incidence of progression of CKD was 16.8% using cystatin C and 8.9% using creatinine (P=0.002). Systolic BP>140 mm Hg or diastolic BP>90 mm Hg was significantly associated with progression using a cystatin C-based (odds ratio (OR), 2.49; 95% confidence interval (CI), 1.12-5.52) or the combined equation (OR, 2.07; 95% CI, 1.16-3.69), but not when using creatinine after adjustment for covariates. In conclusion, with the inclusion of cystatin C in the eGFR assessment hypertension was an important predictor of CKD progression in a multi-ethnic cohort with stage 3 CKD.
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Affiliation(s)
- G S Bloomfield
- Division of Cardiology, School of Medicine, Duke University, Durham, NC, USA
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Mora N, Rieke K, Plitcha J, Segura A, Leehey D, DeShong K, Kramer H, Durazo-Arvizu RA. 25-Hydroxyvitamin D Supplementation and BMI Change: A Meta-Analysis of Randomized Controlled Trials. ACTA ACUST UNITED AC 2013; 3:181. [PMID: 25632374 PMCID: PMC4306432 DOI: 10.4172/2165-7904.1000181] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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] [Indexed: 12/22/2022]
Abstract
The impact of 25-hydroxyvitamin D (25[OH]D) supplementation on weight change remains controversial. The objective of this study was to summarize the effects of 25[OH]D supplementation (cholecalciferol or ergocalciferol) on BMI change through a meta-analysis of published clinical trials. We completed a systematic review of English articles, using MEDLINE (Ovid, Pubmed) from January 1, 1998 through January 1, 2013. The articles selected focused on 25[OH]D supplementation and body mass index (BMI) in randomized controlled trials (RCT’s). The association between 25[OH]D and mean BMI change was estimated utilizing a random effects model. A total of 30 studies were reviewed and 9 were included in the meta-analysis. Total participants included 1651 adults (82.6% women and mean age 47.9 years) and mean follow-up ranged between 6 to 196 weeks and mean daily 25[OH]D dose ranged from 200 IU to 1,110 IU. Five of the 9 studies included calcium supplementation in both groups. Average baseline BMI was 30.7 and 30.4 kg/m2 in the intervention and control groups, respectively. Five studies suggested a beneficial effect for 25[OH]D supplementation for BMI change whereas 3 studies showed no effect of 25[OH]D supplementation on BMI change, and one showed a non-perceptible change. Meta-analysis of BMI values at end of trial showed no statistically significant difference in BMI change by use of 25[OH]D supplementation. Based on existing published trials, oral 25[OH]D supplementation does not significantly impact BMI change.
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Affiliation(s)
- N Mora
- Public Health Program, Loyola University Chicago Health Sciences Center, Chicago, Illinois, USA
| | - K Rieke
- Public Health Program, Loyola University Chicago Health Sciences Center, Chicago, Illinois, USA
| | - J Plitcha
- Departments of Surgery, Loyola University Chicago Health Sciences Center, Chicago, Illinois, USA
| | - Aj Segura
- Public Health Program, Loyola University Chicago Health Sciences Center, Chicago, Illinois, USA
| | - D Leehey
- Medicine, Division of Nephrology and Hypertension, Loyola University Chicago Health Sciences Center, Chicago, Illinois, USA
| | - K DeShong
- Public Health Program, Loyola University Chicago Health Sciences Center, Chicago, Illinois, USA
| | - H Kramer
- Public Health Program, Loyola University Chicago Health Sciences Center, Chicago, Illinois, USA ; Medicine, Division of Nephrology and Hypertension, Loyola University Chicago Health Sciences Center, Chicago, Illinois, USA ; Department of Preventive Medicine and Epidemiology, Loyola University Chicago Health Sciences Center, Chicago, Illinois, USA
| | - Ramon A Durazo-Arvizu
- Public Health Program, Loyola University Chicago Health Sciences Center, Chicago, Illinois, USA ; Department of Preventive Medicine and Epidemiology, Loyola University Chicago Health Sciences Center, Chicago, Illinois, USA
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Laible M, Schoenberg SO, Weckbach S, Lettau M, Winnik E, Bischof J, Franke R, Reiser M, Kramer H. Whole-body MRI and MRA for evaluation of the prevalence of atherosclerosis in a cohort of subjectively healthy individuals. Insights Imaging 2012; 3:485-93. [PMID: 22836780 PMCID: PMC3443278 DOI: 10.1007/s13244-012-0180-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [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: 12/06/2011] [Revised: 05/23/2012] [Accepted: 06/04/2012] [Indexed: 01/07/2023] Open
Abstract
Objectives To assess the prevalence of cardiovascular findings in asymptomatic individuals by means of 1.5-T whole-body magnetic resonance imaging and angiography. Methods A cohort of 138 individuals (118 men, 20 women) with a mean age of 54 years (SD ± 7.55) was referred to whole-body MRI at 1.5-T, including contrast-enhanced whole-body MR angiography (MRA) and cardiac MRI. A total of 2,065/2,070 vessel segments (99.8%) and cardiac function were evaluated. Results Approximately one-fourth of the participating individuals had vascular abnormalities. In 17 subjects (12.3% of all subjects) significant luminal narrowing was observed in at least one vascular segment. Luminal narrowing (mild to severe) was observed in 1 (0.7% of all subjects respectively) of the renal arteries, 7 (5.0%) of the carotid arteries, and 3 (2.2%) of the pelvic and upper leg arteries, and in 17 segments (12.3%) of arteries in the lower leg. In cardiac function and perfusion imaging, wall motion disorders were observed in six patients (4.3%), with additional delayed enhancement and isolated delayed enhancement present in two cases. Functional parameters differed from reference values in 55 cases. Conclusions Even in an asymptomatic cohort of middle-aged predominantly male individuals, atherosclerotic disease is not uncommon and is detectable by whole-body MRI. Main Messages In middle-aged predominantly male individuals, atherosclerotic disease is not uncommon. Even in an asymptomatic collective, approximately one fourth had vascular abnormalities. Using whole-body MR angiography (MRA), 99.8% of 2,070 vessel segments could be evaluated.
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Affiliation(s)
- M Laible
- Department of Clinical Radiology, University Hospital Munich, Grosshadern Campus, Munich, Germany,
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Kramer H, Wintersperger BJ, Reiser MF, Ertl-Wagner B. Vergleich einer neu entwickelten multi-shot echoplanar imaging (EPI) diffusionsgewichteten (DWI) Sequenz mit verschiedenen single-shot EPI DWI Sequenzen. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311225] [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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Villa-Gomez DK, Papirio S, van Hullebusch ED, Farges F, Nikitenko S, Kramer H, Lens PNL. Influence of sulfide concentration and macronutrients on the characteristics of metal precipitates relevant to metal recovery in bioreactors. Bioresour Technol 2012; 110:26-34. [PMID: 22326326 DOI: 10.1016/j.biortech.2012.01.041] [Citation(s) in RCA: 7] [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] [Received: 08/25/2011] [Revised: 12/28/2011] [Accepted: 01/10/2012] [Indexed: 05/28/2023]
Abstract
Purity and settling properties determine metal sulfide recovery from bioreactors. The influence of macronutrients commonly present in mineral media and wastewaters on Cu, Pb, Cd and Zn depletion kinetics and characteristics was evaluated in batch experiments with chemically produced sulfide at different concentrations. The metal depletion kinetics showed that metals with slower depletion rates (Zn and Cd) are susceptible to other removal mechanisms such as biosorption onto the sulfate reducing biofilm and precipitation with macronutrients when sulfide is below the stoichiometric metal to sulfide ratio. For Zn, the main mechanism of removal is its sorption onto apatite (Ca(5)(PO(4)))(3)(+)(OH(-)), a compound formed due to the presence of CaCl(2)·2H(2)O and KH(2)PO(4) in the mineral medium. All precipitates were 8.1-10.0μm regardless the sulfide concentration demonstrating that this parameter is less relevant for particle growth and settling, compared to the agglomeration of the precipitates.
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Affiliation(s)
- D K Villa-Gomez
- Core Pollution Prevention and Control, UNESCO-IHE, Institute for Water Education, P.O. Box 3015, 2601 DA Delft, The Netherlands.
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Nefs G, Pouwer F, Denollet J, Kramer H, Wijnands-van Gent CJM, Pop VJM. Suboptimal glycemic control in type 2 diabetes: a key role for anhedonia? J Psychiatr Res 2012; 46:549-54. [PMID: 22284972 DOI: 10.1016/j.jpsychires.2012.01.013] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Revised: 12/13/2011] [Accepted: 01/09/2012] [Indexed: 01/30/2023]
Abstract
Recent studies examining the relationship between depression and glycosylated hemoglobin (HbA(1c)) concentrations in patients with type 2 diabetes have yielded mixed findings. One explanation may lie in the heterogeneity of depression. Therefore, we examined whether distinct features of depression were differentially associated with suboptimal glycemic control. Cross-sectional baseline data from a dynamic cohort study of primary care patients with type 2 diabetes from the Eindhoven region, The Netherlands, were analyzed. A total of 5772 individuals completed baseline measurements of demographic, clinical, lifestyle and psychological factors between 2005 and 2009. The Edinburgh Depression Scale was used to assess symptoms of depressed mood, anhedonia and anxiety. Suboptimal glycemic control was defined as HbA(1c) values ≥7%, with 29.8% of the sample (n=1718) scoring above this cut-off. In univariate logistic regression analyses, anhedonia was significantly associated with suboptimal glycemic control (OR 1.29, 95% CI 1.09-1.52), while both depressed mood (OR 1.04, 0.88-1.22) and anxiety (OR 0.99, 0.83-1.19) were not. The association between anhedonia and glycemic control remained after adjustment for the other depression measures (OR 1.33, 1.11-1.59). Alcohol consumption and physical activity met criteria for mediation, but did not attenuate the association between anhedonia and glycemic control by more than 5%. Although diabetes duration was identified as a confounder and controlled for, the association was still significant (OR 1.20, 1.01-1.43). Studying different symptoms of depression, in particular anhedonia, may add to a better understanding of the relationship between depression and glycemic control.
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Affiliation(s)
- G Nefs
- CoRPS-Center of Research on Psychology in Somatic Diseases, Department of Medical Psychology and Neuropsychology, Tilburg University, Tilburg, The Netherlands.
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Kramer H, Nikolaou K, Reiser MF, Wintersperger BJ. Magnetresonanzangiographie der Karotiden: intraindividueller Vergleich nicht kontrastmittelverstärkter und kontrastmittelverstärkter Techniken. ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1279356] [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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van Egmond ME, Luijckx GJ, Kramer H, Benne CA, Slebos DJ, van Assen S. Diaphragmatic weakness caused by neuroborreliosis. Clin Neurol Neurosurg 2010; 113:153-5. [PMID: 20965650 DOI: 10.1016/j.clineuro.2010.09.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2009] [Revised: 09/21/2010] [Accepted: 09/22/2010] [Indexed: 11/25/2022]
Affiliation(s)
- Martje E van Egmond
- Department of Neurology, University Medical Center Groningen, Groningen, The Netherlands.
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Kramer H, Runge VM, Williams KD, Naul LG, Nikolaou K, Reiser M, Wintersperger B. Vergleich der kontrastverstärkten Magnetresonanzangiographie (CE-MRA) mit einer nicht kontrastverstärkten (non-CE) MRA Technik zur Bildgebung der A. Carotis. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252589] [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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Kramer H, Reiser M, Nikolaou K. State of the Art MRA: Klinische Applikationen und typische Probleme. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252160] [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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Ranasinghe S, Kramer H, Wright C, Kessler B, Zhang Y, Gillespie G, Rowland-Jones S, McMichael A, Dong T. P17-28 LB. The antiviral efficacy of HIV-specific CD8+ T-cells to a conserved epitope is heavily dependent on the infecting HIV-1 isolate. Retrovirology 2009. [PMCID: PMC2767927 DOI: 10.1186/1742-4690-6-s3-p410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Riedel C, Kramer H. Über das Gerocomicon von Bernardino Stainer. Gerontology 2009. [DOI: 10.1159/000210848] [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] Open
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Graser A, Stieber P, Nagel D, Schäfer C, Horst D, Becker CR, Nikolaou K, Lottes A, Geisbüsch S, Kramer H, Wagner AC, Diepolder H, Schirra J, Roth HJ, Seidel D, Göke B, Reiser MF, Kolligs FT. Comparison of CT colonography, colonoscopy, sigmoidoscopy and faecal occult blood tests for the detection of advanced adenoma in an average risk population. Gut 2009; 58:241-8. [PMID: 18852257 DOI: 10.1136/gut.2008.156448] [Citation(s) in RCA: 290] [Impact Index Per Article: 19.3] [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: 12/12/2022]
Abstract
BACKGROUND AND AIMS This prospective trial was designed to compare the performance characteristics of five different screening tests in parallel for the detection of advanced colonic neoplasia: CT colonography (CTC), colonoscopy (OC), flexible sigmoidoscopy (FS), faecal immunochemical stool testing (FIT) and faecal occult blood testing (FOBT). METHODS Average risk adults provided stool specimens for FOBT and FIT, and underwent same-day low-dose 64-multidetector row CTC and OC using segmentally unblinded OC as the standard of reference. Sensitivities and specificities were calculated for each single test, and for combinations of FS and stool tests. CTC radiation exposure was measured, and patient comfort levels and preferences were assessed by questionnaire. RESULTS 221 adenomas were detected in 307 subjects who completed CTC (mean radiation dose, 4.5 mSv) and OC; 269 patients provided stool samples for both FOBT and FIT. Sensitivities of OC, CTC, FS, FIT and FOBT for advanced colonic neoplasia were 100% (95% CI 88.4% to 100%), 96.7% (82.8% to 99.9%), 83.3% (95% CI 65.3% to 94.4%), 32% (95% CI 14.9% to 53.5) and 20% (95% CI 6.8% to 40.7%), respectively. Combination of FS with FOBT or FIT led to no relevant increase in sensitivity. 12 of 45 advanced adenomas were smaller than 10 mm. 46% of patients preferred CTC and 37% preferred OC (p<0.001). CONCLUSIONS High-resolution and low-dose CTC is feasible for colorectal cancer screening and reaches sensitivities comparable with OC for polyps >5 mm. For patients who refuse full bowel preparation and OC or CTC, FS should be preferred over stool tests. However, in cases where stool tests are performed, FIT should be recommended rather than FOBT.
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Affiliation(s)
- A Graser
- Department of Clinical Radiology, University of Munich, Klinikum Grosshadern, Munich, Germany.
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Kramer H, Herrmann KA, Schmitt P, Zenge M, Glaser C, Reiser MF. Continuous Table Movement for Peripheral MRA with Matrix Coils at 3.0T – Initial Experience. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0028-1124052] [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]
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De Jong WK, Verpooten GF, Kramer H, Louwagie J, Groen HJM. Promoter methylation primarily occurs in tumor cells of patients with non-small cell lung cancer. Anticancer Res 2009; 29:363-369. [PMID: 19331174] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
BACKGROUND The distribution of promoter methylation throughout the lungs of patients with non-small cell lung cancer (NSCLC) is unknown. In this explorative study, we assessed the methylation status of the promoter region of 11 genes in brush samples of 3 well-defined endobronchial locations in patients with NSCLC and in brushes of former and current smokers without NSCLC. MATERIALS AND METHODS The methylation status of RASSF1A, GATA4, GATA5, SFRP1, RARbeta2, DAPK, MGMT, p16, p14, CHFR and APC2 was determined in all samples using real-time methylation-specific PCR. RESULTS Ten patients with NSCLC and 18 non-NSCLC controls were included. Eight patients had one or more methylated genes in their tumor brush. Promoter methylation of genes in proximal or contralateral locations was much less frequent than in tumor brushes, and almost exclusively occurred in normal tissue if the same gene was also methylated in the tumor brush. CONCLUSION Promoter methylation almost exclusively occurred in tumor cells of patients with NSCLC.
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Affiliation(s)
- Wouter K De Jong
- Department of Pulmonary Diseases, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
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Wright C, Edelmann M, diGleria K, Kollnberger S, Kramer H, McGowan S, McHugh K, Taylor S, Kessler B, Bowness P. Ankylosing spondylitis monocytes show upregulation of proteins involved in inflammation and the ubiquitin proteasome pathway. Ann Rheum Dis 2008; 68:1626-32. [PMID: 18952638 DOI: 10.1136/ard.2008.097204] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVES To determine if peripheral blood monocytes from patients with ankylosing spondylitis (AS) differed in protein expression compared to rheumatoid arthritis (RA) and healthy controls (HC). METHODS Monocyte protein expression was characterised by 2D gel electrophoresis and by label-free quantitative expression profiling, using nano-ultra performance liquid chromatography coupled to electrospray ionisation mass spectrometry (ESI-MS(E), where (E) refers to low/high collision energy switching). Data sets were analysed using the Waters expression profiling system and Ingenuity pathway analysis (IPA). RESULTS Two-dimensional gel electrophoresis showed upregulation of proteasomal constituents in AS monocytes, including the beta subunit of proteasome activator (PA)28. Monocyte expression profiling and IPA showed that significant changes in protein expression within the ubiquitin proteasome pathway (UPP) were restricted to AS monocytes. Statistically significant differences in protein expression involving the leucocyte extravasation, vascular endothelial growth factor, integrin and Toll-like receptor signalling pathways were seen in AS and RA monocytes compared to healthy controls. No evidence of upregulation of proteins involved in the endoplasmic reticulum stress response pathway was found in either AS or RA monocytes. Finally, the PA28 complex was shown to increase the generation of human leucocyte antigen (HLA)-B27 antigenic epitopes by the proteasome in vitro. CONCLUSIONS Our proteomic analyses support the hypothesis that monocytes play an important role in the pathogenesis of AS and RA, and further suggest a specific role in AS for the UPP. Quantitative proteomic expression profiling constitutes a powerful new tool for rheumatology research.
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Affiliation(s)
- C Wright
- Human Immunology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, OX3 9DS, UK.
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Liersch R, Kramer H, Kemperdick H, Glöbl H. Spontane Rückbildung eines Leberhämangioms mit großem arteriovenösem Shunt im Säuglingsalter. Klin Padiatr 2008. [DOI: 10.1055/s-2008-1034522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Abstract
Cardiovascular disease still ranks number one in the mortality statistics in the industrialized world. In Germany the five most common causes of death are all associated with arteriosclerotic changes of the arterial vasculature. As the treatment often extends over long periods and it can be impossible for patients to work, peripheral arterial occlusive disease (PAOD) constitutes a not inconsiderable economic factor. Thus, screening for arteriosclerotic disease seems to be reasonable, because the potential for influencing arteriosclerotic changes is known to be higher in an early stage of the disease even before symptoms become apparent. Not every case can be cured, but progression can frequently be slowed down. The need for invasive procedures, some of them associated with ionizing radiation, limited the use of imaging of the arterial vasculature for a long time. Noninvasive clinical examinations such as the "ankle brachial index" (ABI) can indicate the presence of PAOD, though exact localization of the pathologic changes is not possible except with imaging methods. In contrast to these, MRI is a noninvasive imaging modality that does not involve ionizing radiation but offers high spatial resolution arterial imaging.
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Affiliation(s)
- H Kramer
- Institut für Klinische Radiologie, Klinikum Grosshadern der Ludwig-Maximilians-Universität München, München, Deutschland.
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Michaely HJ, Attenberger UI, Kramer H, Reiser M, Schönberg SO. Dixon-Fettsättigung für die Steady State MR-Angiographie (MRA) nach Gabe von Gadofosveset (Vasovist®). ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073804] [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]
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