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Przestrzelski C, Jakob A, Jakob C, Hoffmann FR. Discussion paper: implications for the further development of the successfully in emergency medicine implemented AUD 2IT-algorithm. Front Digit Health 2024; 6:1249454. [PMID: 38645757 PMCID: PMC11027494 DOI: 10.3389/fdgth.2024.1249454] [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: 06/30/2023] [Accepted: 03/19/2024] [Indexed: 04/23/2024] Open
Abstract
The AUD2IT-algorithm is a tool to structure the data, which is collected during an emergency treatment. The goal is on the one hand to structure the documentation of the data and on the other hand to give a standardised data structure for the report during handover of an emergency patient. AUD2IT-algorithm was developed to provide residents a documentation aid, which helps to structure the medical reports without getting lost in unimportant details or forgetting important information. The sequence of anamnesis, clinical examination, considering a differential diagnosis, technical diagnostics, interpretation and therapy is rather an academic classification than a description of the real workflow. In a real setting, most of these steps take place simultaneously. Therefore, the application of the AUD2IT-algorithm should also be carried out according to the real processes. A big advantage of the AUD2IT-algorithm is that it can be used as a structure for the entire treatment process and also is entirely usable as a handover protocol within this process to make sure, that the existing state of knowledge is ensured at each point of a team-timeout. PR-E-(AUD2IT)-algorithm makes it possible to document a treatment process that, in principle, does not have to be limited to the field of emergency medicine. Also, in the outpatient treatment the PR-E-(AUD2IT)-algorithm could be used and further developed. One example could be the preparation and allocation of needed resources at the general practitioner. The algorithm is a standardised tool that can be used by healthcare professionals of any level of training. It gives the user a sense of security in their daily work.
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Affiliation(s)
| | - Antonina Jakob
- Surgical Management LMU Munich University Hospital, Munich, Germany
| | - Clemens Jakob
- Strategy & Market Research, Generali Deutschland AG, Munich, Germany
| | - Felix R. Hoffmann
- Department of Health Economics, APOLLON University of Applied Sciences, Bremen, Germany
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Pott U, Crasselt C, Fobbe N, Haist M, Heinemann M, Hellmann S, Ivanov D, Jakob C, Jansen D, Lei L, Li R, Link J, Lowke D, Mechtcherine V, Neubauer J, Nicia D, Plank J, Reißig S, Schäfer T, Schilde C, Schmidt W, Schröfl C, Sowoidnich T, Strybny B, Ukrainczyk N, Wolf J, Xiao P, Stephan D. Characterization data of reference materials used for phase II of the priority program DFG SPP 2005 "Opus Fluidum Futurum - Rheology of reactive, multiscale, multiphase construction materials". Data Brief 2023; 47:108902. [PMID: 36747980 PMCID: PMC9898608 DOI: 10.1016/j.dib.2023.108902] [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: 12/06/2022] [Revised: 01/08/2023] [Accepted: 01/09/2023] [Indexed: 01/15/2023] Open
Abstract
A thorough characterization of base materials is the prerequisite for further research. In this paper, the characterization data of the reference materials (CEM I 42.5 R, limestone powder, calcined clay and a mixture of these three components) used in the second funding phase of the priority program 2005 of the German Research Foundation (DFG SPP 2005) are presented under the aspects of chemical and mineralogical composition as well as physical and chemical properties. The data were collected based on tests performed by up to eleven research groups involved in this cooperative program.
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Affiliation(s)
- U. Pott
- Department of Civil Engineering, Technische Universität Berlin, Berlin 13355, Germany
| | - C. Crasselt
- Bundesanstalt für Materialforschung und -prüfung, Berlin 12205, Germany
| | - N. Fobbe
- GeoZentrum Nordbayern, Mineralogy, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen 91054, Germany
| | - M. Haist
- Institute of Building Materials Science, Leibniz Universität Hannover, Hannover 30167, Germany
| | - M. Heinemann
- F. A. Finger-Institute for Building Material Science, Bauhaus-Universität Weimar, Weimar 99423, Germany
| | - S. Hellmann
- Institute of Geosciences, Applied Geology, Friedrich-Schiller-Universität Jena, Jena 07749, Germany
| | - D. Ivanov
- Institute for Particle Technology (iPAT), Technische Universität Braunschweig, Braunschweig 38106, Germany
| | - C. Jakob
- GeoZentrum Nordbayern, Mineralogy, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen 91054, Germany
| | - D. Jansen
- GeoZentrum Nordbayern, Mineralogy, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen 91054, Germany
| | - L. Lei
- Department of Chemistry, Technische Universität München, Garching 85748, Germany
| | - R. Li
- Department of Chemistry, Technische Universität München, Garching 85748, Germany
| | - J. Link
- Institute of Building Materials Science, Leibniz Universität Hannover, Hannover 30167, Germany
| | - D. Lowke
- Institute of Building Materials, Concrete Construction and Fire Safety (iBMB), Technische Universität Braunschweig, Braunschweig 38106, Germany
| | - V. Mechtcherine
- Institute of Construction Materials, Technische Universität Dresden, Dresden 01062, Germany
| | - J. Neubauer
- GeoZentrum Nordbayern, Mineralogy, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen 91054, Germany
| | - D. Nicia
- Institute of Building Materials, Concrete Construction and Fire Safety (iBMB), Technische Universität Braunschweig, Braunschweig 38106, Germany
| | - J. Plank
- Department of Chemistry, Technische Universität München, Garching 85748, Germany
| | - S. Reißig
- Institute of Construction Materials, Technische Universität Dresden, Dresden 01062, Germany
| | - T. Schäfer
- Institute of Geosciences, Applied Geology, Friedrich-Schiller-Universität Jena, Jena 07749, Germany
| | - C. Schilde
- Institute for Particle Technology (iPAT), Technische Universität Braunschweig, Braunschweig 38106, Germany
| | - W. Schmidt
- Bundesanstalt für Materialforschung und -prüfung, Berlin 12205, Germany
| | - C. Schröfl
- Institute of Construction Materials, Technische Universität Dresden, Dresden 01062, Germany
| | - T. Sowoidnich
- F. A. Finger-Institute for Building Material Science, Bauhaus-Universität Weimar, Weimar 99423, Germany
| | - B. Strybny
- Institute of Building Materials Science, Leibniz Universität Hannover, Hannover 30167, Germany
| | - N. Ukrainczyk
- Construction and Building Materials, Technische Universität Darmstadt, Darmstadt 64287, Germany
| | - J. Wolf
- GeoZentrum Nordbayern, Mineralogy, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen 91054, Germany
| | - P. Xiao
- Construction and Building Materials, Technische Universität Darmstadt, Darmstadt 64287, Germany
| | - D. Stephan
- Department of Civil Engineering, Technische Universität Berlin, Berlin 13355, Germany,Corresponding author.
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Lu ZC, Haist M, Ivanov D, Jakob C, Jansen D, Schmid M, Kißling PA, Leinitz S, Link J, Mechtcherine V, Neubauer J, Plank J, Schmidt W, Schilde C, Schröfl C, Sowoidnich T, Stephan D. Characterization data of reference cement CEM III/A 42.5N used for priority program DFG SPP 2005 "Opus Fluidum Futurum - Rheology of reactive, multiscale, multiphase construction materials". Data Brief 2020; 30:105524. [PMID: 32322637 PMCID: PMC7168750 DOI: 10.1016/j.dib.2020.105524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 03/24/2020] [Accepted: 03/26/2020] [Indexed: 10/26/2022] Open
Abstract
Two types of cements were selected as the reference cement in the priority program 2005 of the German Research Foundation (DFG SPP 2005). A thorough characterization of CEM I 42.5 R has been made in a recent publication [1]. In this paper, the characterization data of the other reference cement CEM III/A 42.5 N are presented from the aspects of chemical and mineralogical compositions as well as physical and chemical properties. The characterization data of the slag, which is the second main constituent of this specific cement besides the clinker, are presented independently. For all data received, the mean values and the corresponding errors were calculated. The data shall be used for the ongoing research within the priority program. Also, researchers from outside this priority program can benefit from these data if the same materials are used.
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Affiliation(s)
- Z C Lu
- Department of Civil Engineering, Technische Universität Berlin, 13355 Berlin, Germany
| | - M Haist
- Since 02/2019: Institute of Building Materials, Leibniz Universität Hannover, 30167 Hannover, Germany.,Until 01/2019: Institute of Concrete Structures and Building Materials (IMB), Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
| | - D Ivanov
- Institute for Particle Technology, Technische Universität Braunschweig, 38106, Braunschweig, Germany
| | - C Jakob
- GeoZentrum Nordbayern, Mineralogy, Friedrich-Alexander Universität Erlangen-Nürnberg, 91054 Erlangen, Germany
| | - D Jansen
- GeoZentrum Nordbayern, Mineralogy, Friedrich-Alexander Universität Erlangen-Nürnberg, 91054 Erlangen, Germany
| | - M Schmid
- Department of Chemistry, Technische Universität München, 85748 Garching, Germany
| | - P A Kißling
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, 30167 Hannover, Germany
| | - S Leinitz
- Bundesanstalt für Materialforschung und - prüfung (BAM), 12205 Berlin, Germany
| | - J Link
- Since 02/2019: Institute of Building Materials, Leibniz Universität Hannover, 30167 Hannover, Germany.,Until 01/2019: Institute of Concrete Structures and Building Materials (IMB), Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
| | - V Mechtcherine
- Institute of Construction Materials, Technische Universität Dresden, 01159 Dresden, Germany
| | - J Neubauer
- GeoZentrum Nordbayern, Mineralogy, Friedrich-Alexander Universität Erlangen-Nürnberg, 91054 Erlangen, Germany
| | - J Plank
- Department of Chemistry, Technische Universität München, 85748 Garching, Germany
| | - W Schmidt
- Bundesanstalt für Materialforschung und - prüfung (BAM), 12205 Berlin, Germany
| | - C Schilde
- Institute for Particle Technology, Technische Universität Braunschweig, 38106, Braunschweig, Germany
| | - C Schröfl
- Institute of Construction Materials, Technische Universität Dresden, 01159 Dresden, Germany
| | - T Sowoidnich
- F.A. Finger-Insitute for Building Materials, Bauhaus-Universität Weimar, 99421 Weimar, Germany
| | - D Stephan
- Department of Civil Engineering, Technische Universität Berlin, 13355 Berlin, Germany
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Lu ZC, Haist M, Ivanov D, Jakob C, Jansen D, Leinitz S, Link J, Mechtcherine V, Neubauer J, Plank J, Schmidt W, Schilde C, Schröfl C, Sowoidnich T, Stephan D. Characterization data of reference cement CEM I 42.5 R used for priority program DFG SPP 2005 "Opus Fluidum Futurum - Rheology of reactive, multiscale, multiphase construction materials". Data Brief 2019; 27:104699. [PMID: 31720343 PMCID: PMC6838797 DOI: 10.1016/j.dib.2019.104699] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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] [Received: 08/05/2019] [Revised: 10/06/2019] [Accepted: 10/15/2019] [Indexed: 11/29/2022] Open
Abstract
A thorough characterization of starting materials is the precondition for further research, especially for cement, which contains various phases and presents quite a complex material for fundamental scientific investigation. In the paper at hand, the characterization data of the reference cement CEM I 42.5 R used within the priority program 2005 of the German Research Foundation (DFG SPP 2005) are presented from the aspects of chemical and mineralogical compositions as well as physical and chemical properties. The data were collected based on tests conducted by nine research groups involved in this cooperative program. For all data received, the mean values and the corresponding errors were calculated. The results shall be used for the ongoing research within the priority program.
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Affiliation(s)
- Z C Lu
- Department of Civil Engineering, Technische Universität Berlin, 13355, Berlin, Germany
| | - M Haist
- Institute of Building Materials, Leibniz Universität Hannover, 30167, Hannover, Germany.,Institute of Concrete Structures and Building Materials (IMB) and Materials Testing and Research Institute (MPA Karlsruhe), Karlsruher Institue für Technologie, 76131, Karlsruhe, Germany
| | - D Ivanov
- Institute for Particle Technology, Technische Universität Braunschweig, 38106, Braunschweig, Germany
| | - C Jakob
- GeoZentrum Nordbayern, Mineralogy, Friedrich-Alexander Universität Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - D Jansen
- GeoZentrum Nordbayern, Mineralogy, Friedrich-Alexander Universität Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - S Leinitz
- Bundesanstalt für Materialforschung und - Prüfung (BAM), 12205, Berlin, Germany
| | - J Link
- Institute of Building Materials, Leibniz Universität Hannover, 30167, Hannover, Germany.,Institute of Concrete Structures and Building Materials (IMB) and Materials Testing and Research Institute (MPA Karlsruhe), Karlsruher Institue für Technologie, 76131, Karlsruhe, Germany
| | - V Mechtcherine
- Institute of Construction Materials, Technische Universität Dresden, 01159, Dresden, Germany
| | - J Neubauer
- GeoZentrum Nordbayern, Mineralogy, Friedrich-Alexander Universität Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - J Plank
- Department of Chemistry, Technische Universität München, 85748, Garching, Germany
| | - W Schmidt
- Bundesanstalt für Materialforschung und - Prüfung (BAM), 12205, Berlin, Germany
| | - C Schilde
- Institute for Particle Technology, Technische Universität Braunschweig, 38106, Braunschweig, Germany
| | - C Schröfl
- Institute of Construction Materials, Technische Universität Dresden, 01159, Dresden, Germany
| | - T Sowoidnich
- F.A. Finger-Institute for Building Materials, Bauhaus-Universität Weimar, 99421, Weimar, Germany
| | - D Stephan
- Department of Civil Engineering, Technische Universität Berlin, 13355, Berlin, Germany
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6
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Kleeberg L, Morgera S, Jakob C, Hocher B, Schneider M, Peters H, Rötzer S, Müller C, Kaiser M, Fleissner C, Heider U, Neumayer HH, Sezer O. Novel renal replacement strategies for the elimination of serum free light chains in patients with kappa light chain nephropathy. Eur J Med Res 2013; 14:47-54. [PMID: 19258212 PMCID: PMC3351959 DOI: 10.1186/2047-783x-14-2-47] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [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] [Indexed: 11/10/2022] Open
Abstract
Multiple myeloma (MM) is a malignancy with excessive production of monoclonal proteins. At disease presentation 30% of MM patients have significant renal impairment which may progress to renal failure requiring dialysis. Besides chemotherapy extracorporeal elimination procedures such as plasma exchange have been applied as adjuvant strategies to eliminate free light chains from circulating blood, however the efficacy was poor with older techniques. We report about a highly efficient method to eliminate serum free light chain (sFLC) using a newly designed protein leaking membrane in patients suffering from sFLC induced acute renal failure. The protein leaking membrane (HCO 1100) is characterized by increased pore size facilitating elimination of middle molecules such as sFLC kappa (22.5 kD). The HCO 1100 membrane was applied in a hemodialysis and hemodiafiltration mode and compared to standard procedures (high flux hemodialysis, hemodiafiltration and plasma exchange). Hemodiafiltration with the protein leaking membrane HCO 1100 was superior to all other extracorporeal replacement strategies in eliminating sFLC-kappa from circulating blood. A median blood reduction rate of 40.8% (range 13.9% - 66.4%) was achieved during hemodiafiltration. The corresponding peak clearance rate was 25 ml/min. Importantly, the poorest elimination rate was achieved by plasma exchange followed by standard high flux hemodialysis. Extracorporeal elimination strategies with the protein leaking membrane HCO 1100 may be a promising adjuvant treatment strategy for patients with sFLC nephropathy requiring dialysis. Hemodiafiltration and to lesser extend also hemodialysis with the HCO 1100 hemofilter are able to eliminate substantial amounts of sFLC kappa in MM patients.
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Affiliation(s)
- L Kleeberg
- Department of Hematology and Oncology, Charité--Universitätsmedizin Berlin, Germany
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7
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Singer A, Deuse Y, Koch U, Hölscher T, Pfitzmann D, Jakob C, Hehlgans S, Baretton GB, Rentsch A, Baumann M, Muders MH, Krause M. Impact of the adaptor protein GIPC1/Synectin on radioresistance and survival after irradiation of prostate cancer. Strahlenther Onkol 2012; 188:1125-32. [PMID: 23128896 DOI: 10.1007/s00066-012-0228-7] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2012] [Accepted: 08/06/2012] [Indexed: 01/27/2023]
Abstract
PURPOSE Studies have shown that GIPC1/Synectin is an essential adaptor protein of receptors that play an important role in cancer progression and therapy resistance. This is the first study to explore the role of GIPC1/Synectin in radioresistance of prostate cancer and as a possible predictive marker for outcome of primary radiation therapy. MATERIALS AND METHODS The effect of RNA interference-mediated GIPC1/Synectin depletion on clonogenic cell survival after irradiation with 0, 2, 4, or 6 Gy was assayed in two different GIPC1/Synectin-expressing human prostate cancer cell lines. The clinical outcome data of 358 men who underwent radiotherapy of prostate cancer with a curative intention were analyzed retrospectively. Uni- and multivariate analysis was performed of prostate-specific antigen recurrence-free survival and overall survival in correlation with protein expression in pretreatment biopsy specimens. Protein expression was evaluated by standard immunohistochemistry methods. RESULTS In cell culture experiments, no change was detected in radiosensitivity after depletion of GIPC1/Synectin in GIPC1/Synectin-expressing prostate cancer cell lines. Furthermore, there was no correlation between GIPC1/Synectin expression in human pretreatment biopsy samples and overall or biochemical recurrence-free survival after radiotherapy in a retrospective analysis of the study cohort. CONCLUSION Our results do not show a predictive or prognostic function of GIPC1/Synectin expression for the outcome of radiotherapy in prostate cancer. Furthermore, our in vitro results do not support a role of GIPC1 in the cellular radiation response. However, the role of GIPC1 in the progression of prostate cancer and its precursors should be subject to further research.
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Affiliation(s)
- A Singer
- Department of Radiation Oncology, Medical Faculty and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
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Catto JL, Jakob C, Nicholls N. The influence of changes in synoptic regimes on north Australian wet season rainfall trends. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/2012jd017472] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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9
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Kleber M, Ihorst G, Deschler B, Wider D, Jakob C, Liebisch P, Koch B, Engelhardt M. Detection of renal impairment (RI) as one specific comorbidity (CM) factor in multiple myeloma (MM) patients (pts): analysis in consecutive MM pts within a multicenter study. Crit Rev Oncol Hematol 2008. [DOI: 10.1016/s1040-8428(08)70111-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Jakob C, Sterz J, Liebisch P, Mieth M, Rademacher J, Goerke A, Heider U, Fleissner C, Kaiser M, von Metzler I, Müller C, Sezer O. Incorporation of the bone marker carboxy-terminal telopeptide of type-1 collagen improves prognostic information of the International Staging System in newly diagnosed symptomatic multiple myeloma. Leukemia 2008; 22:1767-72. [PMID: 18580957 DOI: 10.1038/leu.2008.159] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Several prognostic markers, including parameters of tumor burden and cytogenetics, were adopted to identify high-risk patients in multiple myeloma (MM). Recently, the International Staging System (ISS), including beta2-microglobulin (beta2M) and albumin, was introduced for patients with symptomatic MM. As bone disease is a hallmark of MM, we investigated the prognostic impact of the bone resorption marker carboxy-terminal telopeptide of type-1 collagen (ICTP) in combination with ISS, beta2M, albumin, deletion of chromosome 13 and high-dose therapy (HDT) in 100 patients with newly diagnosed symptomatic MM. beta2M alone, albumin alone, ISS, HDT, del(13q14) and ICTP were significant prognostic factors for overall survival (OS). In a multivariate analysis, ICTP was the most powerful prognostic factor (log-rank P<0.001, hazard ratio: ninefold increase). ICTP clearly separated two subgroups with a good and a worse prognosis within each of the three ISS stages (ISS I: P=0.027, ISS II: P=0.022, ISS III: P=0.013). Incorporation of ICTP in a combined ICTP-ISS score significantly (P<0.001) separated four risk groups with a 5-year OS rate of 95, 64, 46 and 22%, [corrected] respectively. These data demonstrate for the first time that the inclusion of the collagen-I degradation product ICTP, as a biomarker of bone resorption, adds to the prognostic value of ISS.
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Affiliation(s)
- C Jakob
- Department of Hematology and Oncology, Charité-Universitätsmedizin, Berlin, Germany
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11
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Struppler A, Jakob C, Müller-Barna P, Schmid M, Lorenzen HW, Paulig M, Prosiegel M. Eine neue Methode zur Frührehabilitation zentralbedingter Lähmungen von Arm und Hand mittels Magnetstimulation. KLIN NEUROPHYSIOL 2008. [DOI: 10.1055/s-2008-1060205] [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: 10/21/2022]
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12
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von Metzler I, Krebbel H, Hecht M, Manz RA, Fleissner C, Mieth M, Kaiser M, Jakob C, Sterz J, Kleeberg L, Heider U, Sezer O. Bortezomib inhibits human osteoclastogenesis. Leukemia 2007; 21:2025-34. [PMID: 17581612 DOI: 10.1038/sj.leu.2404806] [Citation(s) in RCA: 157] [Impact Index Per Article: 9.2] [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: 11/09/2022]
Abstract
In multiple myeloma, the overexpression of receptor activator of nuclear factor kappa B (NF-kappaB) ligand (RANKL) leads to the induction of NF-kappaB and activator protein-1 (AP-1)-related osteoclast activation and enhanced bone resorption. The purpose of this study was to examine the molecular and functional effects of proteasome inhibition in RANKL-induced osteoclastogenesis. Furthermore, we aimed to compare the outcome of proteasome versus selective NF-kappaB inhibition using bortezomib (PS-341) and I-kappaB kinase inhibitor PS-1145. Primary human osteoclasts were derived from CD14+ precursors in presence of RANKL and macrophage colony-stimulating factor (M-CSF). Both bortezomib and PS-1145 inhibited osteoclast differentiation in a dose- and time-dependent manner and furthermore, the bone resorption activity of osteoclasts. The mechanisms of action involved in early osteoclast differentiation were found to be related to the inhibition of p38 mitogen-activated protein kinase pathways, whereas the later phase of differentiation and activation occurred due to inhibition of p38, AP-1 and NF-kappaB activation. The AP-1 blockade contributed to significant reduction of osteoclastic vascular endothelial growth factor production. In conclusion, our data demonstrate that proteasomal inhibition should be considered as a novel therapeutic option of cancer-induced lytic bone disease.
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Affiliation(s)
- I von Metzler
- Department of Hematology and Oncology, Charité - Universitätsmedizin Berlin, and Deutsches Rheumaforschungszentrum, Berlin, Germany
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Abstract
The 26S proteasome is a multicatalytic intracellular protease expressed in eukaryotic cells. It is responsible for selective degradation of intracellular proteins that are responsible for cell proliferation, growth, regulation of apoptosis and transcription of genes involved in execution of key cellular functions. Thus proteasome inhibition is a potential treatment option for cancer and diseases due to aberrant inflammation condition. Treatment with proteasome inhibitors results in stabilization and accumulation proteasome substrates, a phenomenon that may result in confounding signals in cells, cell cycle arrest and activation of apoptotic programs. The inhibition of the transcriptional factor nuclear factor kappaB (NF-kappaB) activation was found as one of crucial mechanisms in induction of apoptosis, overcoming resistance mechanisms and inhibition of immune response and inflammation mechanisms. Bortezomib (PS-341) and PS-519 are the first proteasome inhibitors that have entered clinical trials. In multiple myeloma, both the FDA (United States Food and Drug Administration) and EMEA (European Medicine Evaluation Agency) granted an approval for the use of bortezomib (Velcade) for the treatment of relapsed multiple myeloma. At present, several phase II and phase III trials in hematological malignancies and solid tumors are ongoing. PS-519 that focuses on inflammation, reperfusion injury and ischemia is currently under evaluation for the indication of acute stroke.
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Affiliation(s)
- I Zavrski
- Department of Hematology and Oncology, Charité--Universitätsmedizin Berlin, Germany
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14
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Lorenz W, Klinkhammer-Schalke M, Ernst B, Jakob C, Steinger B, Hofstädter F, Koller M. Implementing a clinical pathway for quality-of-life diagnostics and therapy in follow-up of breast cancer patients. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.758] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- W. Lorenz
- Tumor Ctr Regensburg, Regensburg, Germany
| | | | - B. Ernst
- Tumor Ctr Regensburg, Regensburg, Germany
| | - C. Jakob
- Tumor Ctr Regensburg, Regensburg, Germany
| | | | | | - M. Koller
- Tumor Ctr Regensburg, Regensburg, Germany
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Klinkhammer-Schalke M, Lorenz W, Steinger B, Jakob C, Ernst B, Hofstädter F, Koller M. Enhancing the status of quality-of-life diagnostics in caring for breast cancer patients: Results from a multilevel implementation study in a regional tumor centre. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.659] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
| | - W. Lorenz
- Tumor Ctr Regensburg, Regensburg, Germany
| | | | - C. Jakob
- Tumor Ctr Regensburg, Regensburg, Germany
| | - B. Ernst
- Tumor Ctr Regensburg, Regensburg, Germany
| | | | - M. Koller
- Tumor Ctr Regensburg, Regensburg, Germany
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16
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Goldmann K, Jakob C. Size 2 ProSeal™ laryngeal mask airway: a randomized, crossover investigation with the standard laryngeal mask airway in paediatric patients. Br J Anaesth 2005; 94:385-9. [PMID: 15591332 DOI: 10.1093/bja/aei045] [Citation(s) in RCA: 61] [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] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND One of the main concerns with the use of the standard laryngeal mask airway (SLMA) in small infants is that its low-pressure seal might be inadequate for positive pressure ventilation so that there is a risk of gas leakage into the stomach with the subsequent risk of regurgitation. The new ProSeal LMA (PLMA) has been shown to form a more effective seal than the SLMA and to facilitate gastric tube placement in adults. The first paediatric size PLMA became available recently. METHODS Thirty anaesthetized, non-paralysed children aged 46 (19) months, weighing 16 (10-21) kg, were studied. The SLMA and PLMA were inserted in random order into each patient. Airway leak pressure and maximum tidal volume were measured. Ease of insertion, quality of initial airway and fibreoptic position were also determined. Gastric tube placement was assessed for the PLMA. RESULTS The airway leak pressure and maximum tidal volume were significantly higher for the PLMA (P=0.001). Ease of insertion and quality of initial airway were similar for both devices. Air entry into the stomach occurred more frequently with the SLMA (P=0.005). Gastric tube placement was possible in all patients. CONCLUSIONS The size 2 PLMA offered some advantages over the same size of SLMA in this crossover investigation. The high reliability of gastric tube placement and the significantly increased airway leak pressure might have important implications for use of this device for positive pressure ventilation in infants.
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Affiliation(s)
- K Goldmann
- Department of Anaesthesia and Intensive Care Therapy, Philipps University Marburg, 35033 Marburg, Germany
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17
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Grunewald M, Gebhard H, Jakob C, Wagner M, Hothorn T, Neuhuber WL, Bautz WA, Greess HR. [Web-based training in radiology - student course in the Virtual University of Bavaria]. ROFO-FORTSCHR RONTG 2004; 176:885-95. [PMID: 15173985 DOI: 10.1055/s-2004-812750] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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: 10/26/2022]
Abstract
PURPOSE The ninth version of the licensing regulation for medical doctors (Approbation Regulation (AR)) sets a benchmark in terms of practical experience, interdigitation of preclinical and clinical studies, interdisciplinary approach, economic efficiency, independence of students, added new teaching and learning modalities, and ongoing evaluation of the progress of the medical students. It is the aim to implement these major points of the AR in a model course for diagnostic radiology and radiation protection within the scope of the Virtual University of Bavaria and test them in practice. MATERIALS AND METHODS In cooperation with residents and board certified radiologists, students developed the virtual course "Web-Based Training (WBT) Radiology" in diagnostic radiology and radiation protection for students in the first clinical semester. A representative target group taken from the student body was asked about the options to get access to the World Wide Web (Internet), and the satisfaction concerning configuration and content of the newly developed program. A comparison was made between the results of the final examination taken by students who made use of the virtual course in addition to conventional lessons and taken by students who did not subscribe to the virtual course and exclusively relied on conventional lessons. In addition, a pilot study was conducted in the winter semester 2002/03, which compared students taking either the traditional lessons or the new virtual course on the Internet. RESULTS The virtual course-model had test results with a positive trend. All targeted students had Internet access. Constructive criticism was immediately implemented and contributed to rapid optimization. The learning success of the additive or alternative virtual course was in no way less than the learning success achieved with the conventional course. CONCLUSION The learning success as measure of quality in teaching and the acceptance by students and teachers justify the continuation of this course model and its expansion. Besides enabling the learning in small study groups; the course "WBT Radiology" might not only help implementing the major points of the new AR but might also complement any deficiencies in the current education. Economic aspects may encourage their implementations.
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Affiliation(s)
- M Grunewald
- Institut für Diagnostische Radiologie, Friedrich-Alexander-Universität Erlangen-Nürnberg.
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18
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Langelotz C, Schmid P, Jakob C, Heider U, Wernecke KD, Possinger K, Sezer O. Expression of high-mobility-group-protein HMGI-C mRNA in the peripheral blood is an independent poor prognostic indicator for survival in metastatic breast cancer. Br J Cancer 2003; 88:1406-10. [PMID: 12778070 PMCID: PMC2741055 DOI: 10.1038/sj.bjc.6600935] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
HMGI-C belongs to the high-mobility-group-protein (HMG) family of architectural transcription factors and considerable interest has recently been shown in its expression in neoplastic tissues and apparent involvement in tumorigenesis. We could previously demonstrate an expression of HMGI-C mRNA in the peripheral blood of breast cancer patients for the first time. In this prospective study, we evaluated the independent prognostic power of HMGI-C mRNA expression in the peripheral blood of an unselected cohort of 69 patients with metastatic breast cancer using a hemi-nested reverse transcriptase polymerase chain reaction (RT-PCR) followed by sequence analysis of the resulting PCR products. Multivariate analysis was performed using the Cox regression model. HMGI-C mRNA was detected in peripheral blood from 21 out of 69 (30%) patients with metastatic breast cancer. Median survival was 15.9 months in patients expressing HMGI-C, while in the group of patients without HMGI-C expression the median survival had not been reached yet after a median follow-up of 24.7 months and 85.4% were still alive in this group. Disease-specific survival was significantly worse for patients positive for HMGI-C in comparison to those not expressing HMGI-C (P=0.0001). In a multivariate regression analysis, HMGI-C remained an independent prognostic factor for overall survival (P=0.001) besides oestrogen receptor status (P=0.024) and presence of metastases in liver and lungs (P=0.029). HMGI-C expression in the peripheral blood of patients with metastatic breast cancer is a powerful independent indicator for poor overall survival and this is the first study to demonstrate its prognostic relevance in univariate and multivariate analysis.
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Affiliation(s)
- C Langelotz
- Department of Oncology and Hematology, University Hospital Charité, Humboldt-University, Schumannstr 20/21, 10098 Berlin, Germany
| | - P Schmid
- Department of Oncology and Hematology, University Hospital Charité, Humboldt-University, Schumannstr 20/21, 10098 Berlin, Germany
| | - C Jakob
- Department of Oncology and Hematology, University Hospital Charité, Humboldt-University, Schumannstr 20/21, 10098 Berlin, Germany
| | - U Heider
- Department of Oncology and Hematology, University Hospital Charité, Humboldt-University, Schumannstr 20/21, 10098 Berlin, Germany
| | - K D Wernecke
- Department of Medical Biometry, University Hospital Charité, Humboldt-University, Schumannstr 20/21, 10098 Berlin, Germany
| | - K Possinger
- Department of Oncology and Hematology, University Hospital Charité, Humboldt-University, Schumannstr 20/21, 10098 Berlin, Germany
| | - O Sezer
- Department of Oncology and Hematology, University Hospital Charité, Humboldt-University, Schumannstr 20/21, 10098 Berlin, Germany
- Department of Oncology and Hematology, Universitätsklinikum Charité, Humboldt Universität, Schumannstr. 20/21, 10098 Berlin, Germany. E-mail:
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19
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Liersch T, Langer C, Jakob C, Müller D, Ghadimi BM, Siemer A, Markus PM, Füzesi L, Becker H. [Preoperative diagnostic procedures in locally advanced rectal carcinoma (> or =T3 or N+). What does endoluminal ultrasound achieve at staging and restaging (after neoadjuvant radiochemotherapy) in contrast to computed tomography?]. Chirurg 2003; 74:224-34. [PMID: 12647079 DOI: 10.1007/s00104-002-0609-z] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.7] [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: 11/30/2022]
Abstract
INTRODUCTION Neoadjuvant radiochemotherapy (neoRT/CT) in locally advanced rectal cancer requires an exact initial determination of the depth of the cancerous infiltration (T-status) and of locoregional lymph node metastasis (N-status). For staging and restaging, contrast-enhanced computed tomography (CT) is usually used. In specialised centers, the endorectal ultrasound (rES) may be preferred. METHODS Between January 1998 and May 2001, the T- and N-status of 102 patients with adenocarcinoma of the rectum (> or =T3 or N+) was determined prospectively by rES and CT (group I: n=61 without neo-RT/CT, examined once; group II: n=41 examined before and after neoRT/CT). All diagnostic findings were compared using the (y)pTNM-classification. RESULTS In the patients from group I, the depth of infiltration (uT) was predicted correctly by rES in 75% and by CT in 48% of cases; the carcinomas were understaged in 10% and 41% of cases and overstaged in 15% and 11%, respectively. According to the histopathological findings, the N-status was determined correctly by rES and CT in 75% and 57% of cases, understaging occurred in 8% and 30% and overstaging in 17% and 13%, respectively. In cases in which both methods resulted in identical T- (uT+ctT) or N-staging (uN+ctN), the accuracy increased to 82% and 80%, respectively. In patients from group II, after neoRT/CT rES and CT allowed the exact prediction of the yuT-stage in 66% and 51%, respectively. Only 2% were understaged by rES (understaging by CT: 22%). Overstaging occurred in 32% and 27% by rES and CT, respectively. The N-status determined by rES and CT was in accordance with the histopathological findings in 68% and 76%of cases, respectively. Understaging occurred in 20% and 17%,overstaging in 12% and 7%, respectively. Again identical staging results in both rES and CT increased the accuracy of the T- (yuT+yctT) or N- (yuN+yctN) classification to 90% and 83%, respectively. In group II, downsizing of the tumor by more than one T-stage was correctly assessed by rES results in 15/20 cases (75%). A complete remission of initial uT3-carcinoma was diagnosed correctly in only two of eight ypT0-cases. In contrast, CT demonstrated a remission of disease in all cases but was unable to predict the extent of tumour reduction. A remission of lymph node metastasis was accurately shown by rES in 17/19 cases (90%) and by CT in 10/12 cases (83%). CONCLUSION The staging of pretherapeutic, locoregional T- and N-status by rES is superior to that by CT (T-status: P=0.0164, N-status: P=0.0035). At restaging, rES offers higher accuracy in the detection of residual tumour infiltration (but not significantly to CT, yT-status: P=0.0833, yN-status: P=0.7962) and assessment of local remission. Therefore rES should be the method of choice in staging to avoid overtreatment in neoadjuvant settings.After neoRT/CT, the predictive efficacy of the rES for the downsizing/-staging of rectal cancer must be evaluated on greater numbers of patients receiving standardised diagnostic procedures and therapy.
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Affiliation(s)
- T Liersch
- Klinik und Poliklinik für Allgemeinchirurgie, Universitätsklinikum der Georg-August-Universität Göttingen.
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Walker P, Dexeus S, De Palo G, Barrasso R, Campion M, Girardi F, Jakob C, Roy M. International terminology of colposcopy: an updated report from the International Federation for Cervical Pathology and Colposcopy. Obstet Gynecol 2003; 101:175-7. [PMID: 12517664 DOI: 10.1016/s0029-7844(02)02581-4] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- P Walker
- Royal Free Hospital, London, United Kingdom.
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21
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Kauppi B, Jakob C, Farnegardh M, Ahola H, Alarcon M, Calles K, Engstrom O, Harlan J, Ramkvist AK, Thorell S, Young J, Ohman L, Greer J, Gustafsson JA, Carlstedt-Duke J, Carlquist M. The antagonistic crystal structure of the glucocorticoid receptor, ligand-binding domain. Acta Crystallogr A 2002. [DOI: 10.1107/s0108767302093042] [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: 11/10/2022] Open
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22
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Jakob C. [Expectations of patients with rheumatism from new therapies]. Z Rheumatol 2001; 60:443-5. [PMID: 11826737 DOI: 10.1007/s003930170008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The expectation of patients with rheumatism concerning newly developed therapies are described on the basis of the experience of the patients' self-help movement. Most important are the wishes of the patients for healing and for treatment which is safe and without adverse effects. The measures necessary for better implementation of research results in the treatment of patients are described.
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Sezer O, Niemöller K, Jakob C, Zavrski I, Heider U, Eucker J, Kaufmann O, Possinger K. Relationship between bone marrow angiogenesis and plasma cell infiltration and serum beta2-microglobulin levels in patients with multiple myeloma. Ann Hematol 2001; 80:598-601. [PMID: 11732871 DOI: 10.1007/s002770100361] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [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: 10/27/2022]
Abstract
There is growing evidence that angiogenesis is important not only in solid tumors but also in hematological malignancies. Recently, we found that bone marrow angiogenesis is a prognostic factor for disease-related survival in patients with multiple myeloma. In this report, we addressed the question of whether the microvessel density in bone marrow biopsies is correlated to other myeloma parameters, e.g., serum beta2-microglobulin (beta2-MG) and plasma cell infiltration in the bone marrow. In 22 multiple myeloma patients, immunohistochemical, CD34-stained, paraffin-embedded bone marrow biopsies before and after chemotherapy were studied. Microvessels were counted in 400x magnification, and the mean number of vessels per area in each sample was noted as the microvessel density (MVD). Pretreatment bone marrow MVD (median: 44, range: 11-175 vessels/mm2) correlated significantly with the bone marrow plasma cell infiltration (median: 30%, range: 5-90%, r = 0.642, P=0.001) and beta2-MG (median: 2.74, range: 1.4-26.1 mg/l, r = 0.749, P < 0.0005). In contrast, there was no correlation between posttreatment MVD and plasma cell infiltration or beta2-MG (median: MVD 31, range: 0-221 vessels/mm2, median plasma cell infiltration: 15%, range: 5-80%, r = 0.229, P = 0.306 and median beta2-MG: 2.65, range: 1-27.6 mg/l, r = -0.042, P = 0.853). These findings show that the strong correlations between bone marrow MVD and plasma cell infiltration as well as serum beta2-MG levels disappear after chemotherapy. The underlying mechanisms need further investigations.
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Affiliation(s)
- O Sezer
- Department of Hematology and Oncology, Universitätsklinikum Charité, Humboldt-Universität zu Berlin, Germany.
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Sezer O, Eucker J, Jakob C, Kaufmann O, Schmid P, Possinger K. Achievement of complete remission in refractory Hodgkin's disease with prolonged infusion of gemcitabine. Invest New Drugs 2001; 19:101-4. [PMID: 11291828 DOI: 10.1023/a:1006478702342] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Although, in recent decades effective chemotherapy regimens have been developed for the treatment of Hodgkin's disease, the prognosis of patients who experience disease progression is still very poor. New treatment approaches are urgently required to salvage such patients. In a patient with Hodgkin's disease who failed to achieve complete remission with the escalated BEACOPP protocol, progression with bone marrow infiltration and B symptoms developed despite further treatment. Subsequently, gemcitabine was administered in a novel schedule as a four-hour infusion of 250 mg/m2 on days 1, 8, and 15, every four weeks. After the first cycle, the dose was reduced to 200 mg/m2 because of grade 3 neutropenia. The condition of the patient improved after the second cycle and no toxicity was observed during cycles 3-6. Complete remission was achieved. Two years after the end of gemcitabine therapy, the patient is in good clinical condition and in continuous complete remission without further treatment. This is the first report of the prolonged infusion of gemcitabine as a salvage therapy in Hodgkin's disease.
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Affiliation(s)
- O Sezer
- Department of Oncology and Hematology, Universitätsklinikum Charité, Humboldt-Universität, Berlin, Germany.
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Männer J, Jakob C, Steding G, Füzesi L. Horseshoe lung: report on a new variant--"inverted" horseshoe lung--with embryological reflections on the formal pathogenesis of horseshoe lungs. Ann Anat 2001; 183:261-5. [PMID: 11396797 DOI: 10.1016/s0940-9602(01)80230-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [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: 10/25/2022]
Abstract
The term "horseshoe lung" is used to describe a rare congenital anomaly of the lungs that is characterized by the presence of a midline isthmus of pulmonary parenchyma connecting the posterobasal regions of the right and left lungs. Since the introduction of the term horseshoe lung in the 1960's, almost 40 cases have been reported in the literature. In all these cases, the right and left lungs were joined in their posterobasal regions, the situation resembling that found in horseshoe kidneys. Here we present a case of connection between the right and left lungs found during necropsy of a human fetus. In this case, a midline isthmus of pulmonary parenchyma covered by visceral pleura joined the apical regions of the right and left lungs behind the trachea and esophagus. This connection resulted in a "horseshoe"-shaped lung in which the "horseshoe" was turned by 180 degrees compared to classical cases of horseshoe lung. To the best of our knowledge, this is the first report on an "inverted" horseshoe lung. Embryological reflections on the formal pathogenesis of inverted and classical horseshoe lungs are presented.
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Affiliation(s)
- J Männer
- Abteilung Embryologie and Zentrum Pathologie, Georg-August University, Göttingen, Germany
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Sezer O, Niemöller K, Kaufmann O, Eucker J, Jakob C, Zavrski I, Possinger K. Decrease of bone marrow angiogenesis in myeloma patients achieving a remission after chemotherapy. Eur J Haematol 2001; 66:238-44. [PMID: 11380603 DOI: 10.1034/j.1600-0609.2001.066004238.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [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: 11/23/2022]
Abstract
The impact of angiogenesis is well known for the growth and viability of solid tumors. Fewer studies have been published relating angiogenesis to clinical or pathological parameters in hematological malignancies. In this report, we have estimated the bone marrow microvessel density (MVD) before and after conventional-dose or high-dose chemotherapy with autologous stem cell transplantation. Immunohistochemical CD34-stained paraffin-embedded bone marrow biopsies of 21 patients with stage III multiple myeloma were studied. Microvessels were counted at 400x magnification, and the mean number of vessels per area in each sample was noted as the MVD. The median MVD of all patients was 53.1 vessels/mm2 (range 15.5-174.7 vessels/mm2) before treatment and 29.3 vessels/mm2 (range 0-221.1 vessels/mm2) after chemotherapy. The post-treatment MVD in the two groups of patients with and without remission was significantly different (p=0.001), whereas the pretreatment MVD was not. Responders but not nonresponders showed a significant decrease of MVD after therapy in comparison to their pretreatment levels. The progression-free survival in patients who achieved a reduction in MVD after chemotherapy was significantly longer than in patients without a decrease in MVD (P=0.006). Furthermore, we compared the MVD of patients after achievement of a remission to MVD of 15 untreated stage I myeloma patients. The MVD of patients in remission was not statistically different from the MVD in stage I myeloma. These results underscore the impact of angiogenesis in myeloma and give the first report that effective chemotherapy is accompanied by a significant decrease in bone marrow angiogenesis in this disease.
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Affiliation(s)
- O Sezer
- Department of Hematology and Oncology and Institute of Pathology, Universitätsklinikum Charité, Humboldt-Universität zu Berlin, Berlin, Germany.
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Mrugalla S, Jakob C. [The significance of ethics in medical education]. Folia Med Cracov 2001; 41:45-8. [PMID: 11210807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- S Mrugalla
- Uniwersytet Georga Augusta, Getynga Akademia Medyczna 37075 Getynga
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Abstract
We report the case of a 32-year-old woman having developed two cervical cancers synchronously, an adenocarcinoma and a squamous cell carcinoma. Polymerase chain reaction with the general primers GP5/GP6 and a subsequent enzyme-linked immunosorbent assay to detect human papillomaviruses (HPV) resulted in isolation of HPV 33 in the squamous cell carcinoma and HPV 18 in the adenocarcinoma. This is the first reported case of two histologically different synchronous cervical cancers with this distinct HPV expression pattern, and further confirms the association of certain 'high-risk' HPV genotypes to different histological features of carcinoma. Furthermore, the important role of microdissection for gaining tumor tissue of different areas in molecular diagnostics is supported.
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Affiliation(s)
- C Jakob
- Department of Pathology, Georg August University Göttingen, Germany.
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30
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Sezer O, Jakob C, Eucker J, Niemöller K, Gatz F, Wernecke K, Possinger K. Serum levels of the angiogenic cytokines basic fibroblast growth factor (bFGF), vascular endothelial growth factor (VEGF) and hepatocyte growth factor (HGF) in multiple myeloma. Eur J Haematol 2001; 66:83-8. [PMID: 11168514 DOI: 10.1034/j.1600-0609.2001.00348.x] [Citation(s) in RCA: 128] [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: 12/18/2022]
Abstract
Angiogenesis is a crucial process in growth and progression of cancer and there is growing evidence that neovascularisation is important in hematological malignancies. Since an increased angiogenic potential has been identified in multiple myeloma, we simultaneously measured circulating serum levels of the cytokines bFGF, VEGF, HGF and IL-6 by ELISA in 67 patients with multiple myeloma or monoclonal gammopathies of undetermined significance (MGUS) and in 20 controls. Median values of bFGF were 4.7 pg/ml in healthy volunteers, 6.2 in MGUS, 6.3 in myeloma stage I, 13.4 in stage II and 21.7 in stage III. Myeloma patients had significantly higher bFGF serum levels than controls (p<0.001). Pretreatment bFGF levels differed significantly in the Salmon and Durie stages I-III (p=0.02) and were significantly elevated in stage II-III compared to stage I myeloma (p=0.02). In patients responding to chemotherapy according to the CLMTF criteria, a significant decrease in serum bFGF, VEGF and HGF levels occurred (median pretreatment values for bFGF 23.9 pg/ml, post-treatment 6.5 pg/ml; p<0.001, for VEGF 223 pg/ml versus 105 pg/ml; p=0.02 and for HGF 1429 pg/ml versus 1077 pg/ml; p=0.02, respectively). In 11 patients who did not achieve a remission, there was no significant decrease in bFGF, VEGF and HGF levels. These data show that myeloma in stages II and III is associated with an increase in serum bFGF concentrations and give the first report that effective chemo-therapy is accompanied by a significant decrease in the angiogenic factors bFGF, VEGF and HGF, while no decrease of these factors could be found in nonresponders.
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Affiliation(s)
- O Sezer
- Department of Hematology and Oncology, Department of Medical Statistics, Universitätsklinikum Charité, Humboldt-Universität, Berlin, Germany
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Abstract
Primary (AL, amyloid light-chain) amyloidosis is a plasma cell disorder in which deposits of amyloid light-chain protein cause progressive organ failure. It is important to recognise that amyloidosis is a dynamic process and chemotherapy-induced reduction of the activity of the plasma cell clone reduces the supply of the amyloid precursor protein and can result in a major regression of the deposits. The most common target organ is the kidney and renal amyloidosis manifests as proteinuria or nephrotic syndrome. Proteinuria is seen in three quarters of patients. Amyloid related nephrotic syndrome and renal failure are potentially reversible. Fatigue, congestive heart failure, hepatomegaly, peripheral neuropathy, orthostatic hypotension, carpal tunnel syndrome and macroglossia are other common features. The median survival is one to two years. Conventional-dose melphalan as standard treatment can prolong the median duration of survival by about ten months, but the clinical response rates with improvement of impaired organ function are low. Up-front high-dose chemotherapy with autologous peripheral blood stem cell transplantation is much more effective and can result in a major improvement in the clinical condition of patients. However, the toxicity related to this treatment can be relevant due to impaired organ function. Conventional-dose chemotherapy consisting of vincristine, doxorubicin and dexamethasone or high-dose dexamethasone or interferon-alpha are other possible approaches to treatment. The improvement of patient condition with an effective conventional-dose chemotherapy may increase the tolerability of high-dose chemotherapy and reduce transplantation related problems.
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Affiliation(s)
- O Sezer
- Department of Hematology and Oncology, Universitätsklinikum Charité, Humboldt Universität, Berlin, Germany.
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Sezer O, Niemöller K, Eucker J, Jakob C, Kaufmann O, Zavrski I, Dietel M, Possinger K. Bone marrow microvessel density is a prognostic factor for survival in patients with multiple myeloma. Ann Hematol 2000; 79:574-7. [PMID: 11100749 DOI: 10.1007/s002770000236] [Citation(s) in RCA: 117] [Impact Index Per Article: 4.9] [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: 10/28/2022]
Abstract
The importance of neoangiogenesis for the progressive growth and viability of solid tumors is well established. Recently, there has been growing evidence that angiogenesis might also be important in hematological malignancies, but only few data are available. In this report, we have studied the impact of bone marrow microvessel density and survival in patients with multiple myeloma (MM). Immunohistochemical CD34 stained paraffin-embedded bone marrow biopsies of 44 patients with newly diagnosed MM were studied. Microvessels were counted in 400 x magnification and the mean number of vessels per area in each sample was noted as the microvessel density (MVD). The median MVD was 48 vessels/mm2, the range was 0-125 vessels/mm2. Using a cut-off value of the median MVD in the Kaplan-Meier analysis, the median survival was 22.2 months in the group with the higher MVD and was not reached in the group with the lower MVD (P< 0.01). In a multivariate Cox regression analysis, using previously identified prognostic factors beta2-microglobulin, C-reactive protein (CRP), and age, MVD remained significant as a prognostic factor (P< 0.03).
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Affiliation(s)
- O Sezer
- Universitätsklinikum Charite, Humboldt-Universität zu Berlin, Department of Hematology and Oncology, Germany.
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33
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Weig AR, Jakob C. Functional identification of the glycerol permease activity of Arabidopsis thaliana NLM1 and NLM2 proteins by heterologous expression in Saccharomyces cerevisiae. FEBS Lett 2000; 481:293-8. [PMID: 11007982 DOI: 10.1016/s0014-5793(00)02027-5] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.0] [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: 11/16/2022]
Abstract
NLM proteins (NOD26-like major intrinsic proteins) from plants contain amino acid sequence signatures which can be found in aquaporins including plant plasma membrane intrinsic proteins and tonoplast intrinsic proteins and glycerol permeases such as the Escherichia coli GlpF and the yeast FPS1 proteins. Heterologous expression of two members of the NLM subgroup from Arabidopsis thaliana (AtNLM1 and AtNLM2) in baker's yeast demonstrated the glycerol permease activity in addition to the previously described aquaporin activity of AtNLM1. The transport was non-saturable up to 100 mM extracellular glycerol concentration. Longer-chain sugar alcohols did not compete with the transport of radiolabelled glycerol and hexoses were also not transported through the pore.
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Affiliation(s)
- A R Weig
- Institute of Plant Physiology, University of Bayreuth, Universitätsstrasse 30, D-95440, Bayreuth, Germany.
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34
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Muchmore SW, Chen J, Jakob C, Zakula D, Matayoshi ED, Wu W, Zhang H, Li F, Ng SC, Altieri DC. Crystal structure and mutagenic analysis of the inhibitor-of-apoptosis protein survivin. Mol Cell 2000. [PMID: 10949038 DOI: 10.1016/s1097-2765(05)00019-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The coupling of apoptosis (programmed cell death) to the cell division cycle is essential for homeostasis and genomic integrity. Here, we report the crystal structure of survivin, an inhibitor of apoptosis, which has been implicated in both control of cell death and regulation of cell division. In addition to a conserved N-terminal Zn finger baculovirus IAP repeat, survivin forms a dimer through a symmetric interaction with an intermolecularly bound Zn atom located along the molecular dyad axis. The interaction of the dimer-related C-terminal alpha helices forms an extended surface of approximately 70 A in length. Mutagenesis analysis revealed that survivin dimerization and an extended negatively charged surface surrounding Asp-71 are required to counteract apoptosis and preserve ploidy. These findings may provide a structural basis for a dual role of survivin in inhibition of apoptosis and regulation of cell division.
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Affiliation(s)
- S W Muchmore
- Pharmaceutical Discovery Division, Abbott Laboratories, Abbott Park, Illinois 60064, USA.
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35
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Muchmore SW, Chen J, Jakob C, Zakula D, Matayoshi ED, Wu W, Zhang H, Li F, Ng SC, Altieri DC. Crystal structure and mutagenic analysis of the inhibitor-of-apoptosis protein survivin. Mol Cell 2000. [PMID: 10949038 DOI: 10.1016/s1097-2765(00)00018-6] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The coupling of apoptosis (programmed cell death) to the cell division cycle is essential for homeostasis and genomic integrity. Here, we report the crystal structure of survivin, an inhibitor of apoptosis, which has been implicated in both control of cell death and regulation of cell division. In addition to a conserved N-terminal Zn finger baculovirus IAP repeat, survivin forms a dimer through a symmetric interaction with an intermolecularly bound Zn atom located along the molecular dyad axis. The interaction of the dimer-related C-terminal alpha helices forms an extended surface of approximately 70 A in length. Mutagenesis analysis revealed that survivin dimerization and an extended negatively charged surface surrounding Asp-71 are required to counteract apoptosis and preserve ploidy. These findings may provide a structural basis for a dual role of survivin in inhibition of apoptosis and regulation of cell division.
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Affiliation(s)
- S W Muchmore
- Pharmaceutical Discovery Division, Abbott Laboratories, Abbott Park, Illinois 60064, USA.
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36
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Muchmore SW, Chen J, Jakob C, Zakula D, Matayoshi ED, Wu W, Zhang H, Li F, Ng SC, Altieri DC. Crystal structure and mutagenic analysis of the inhibitor-of-apoptosis protein survivin. Mol Cell 2000; 6:173-82. [PMID: 10949038] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
The coupling of apoptosis (programmed cell death) to the cell division cycle is essential for homeostasis and genomic integrity. Here, we report the crystal structure of survivin, an inhibitor of apoptosis, which has been implicated in both control of cell death and regulation of cell division. In addition to a conserved N-terminal Zn finger baculovirus IAP repeat, survivin forms a dimer through a symmetric interaction with an intermolecularly bound Zn atom located along the molecular dyad axis. The interaction of the dimer-related C-terminal alpha helices forms an extended surface of approximately 70 A in length. Mutagenesis analysis revealed that survivin dimerization and an extended negatively charged surface surrounding Asp-71 are required to counteract apoptosis and preserve ploidy. These findings may provide a structural basis for a dual role of survivin in inhibition of apoptosis and regulation of cell division.
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Affiliation(s)
- S W Muchmore
- Pharmaceutical Discovery Division, Abbott Laboratories, Abbott Park, Illinois 60064, USA.
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37
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Brinck U, Jakob C, Bau O, Füzesi L. Papillary squamous cell carcinoma of the uterine cervix: report of three cases and a review of its classification. Int J Gynecol Pathol 2000; 19:231-5. [PMID: 10907171 DOI: 10.1097/00004347-200007000-00006] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [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: 11/25/2022]
Abstract
Papillary squamous cell carcinoma (SCC) of the uterine cervix has been defined as a malignant squamous cell lesion characterized by a papillary architecture with fibrovascular cores and moderate to severe dysplasia devoid of frank keratinization and koilocytic change. Papillary SCC should be histopathologically delineated from other rare variants of SCC with papillary features including verrucous and condylomatous carcinoma and the recently recognized (squamo-)transitional cell carcinoma of the uterine cervix. We report three cases of papillary SCC (FIGO stages IB, IV, and IVB) in postmenopausal women. Each tumor tested was positive for human papillomavirus (HPV) 16 and negative for HPV 6, 11 and 18 by general primer mediated polymerase chain reaction and subsequent enzyme-linked immunosorbent assay (PCR-ELISA). These findings 1) support the hypothesis that papillary SCCs (unlike verrucous carcinoma) are similar with regard to risk factors to (squamo-)transitional and condylomatous carcinoma; 2) suggest that HPV may play an etiologic role in at least some of these tumors; and 3) suggest that papillary SCC is the only subtype among squamous/(squamo-)transitional carcinomas that is associated with high-risk HPV infection in the absence of HPV-related histopathologic alterations.
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Affiliation(s)
- U Brinck
- Department of Pathology, Georg-August University, Göttingen, Germany
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Sezer O, Eucker J, Jakob C, Possinger K. Diagnosis and treatment of AL amyloidosis. Clin Nephrol 2000; 53:417-23. [PMID: 10879660] [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: 02/16/2023] Open
Abstract
AL (amyloid light-chain) amyloidosis is a plasma cell disorder in which depositions of amyloid light-chain protein cause progressive organ failure. Virtually all patients with AL amyloidosis have a monoclonal protein in the serum or urine or a monoclonal population of plasma cells in the bone marrow. The most common target organ is the kidney and renal amyloidosis manifests as proteinuria or nephrotic syndrome in 3/4 of the patients. The median survival is one to two years. It is important to recognize that the amyloidosis is a dynamic process, and chemotherapy induced reduction of the activity of the plasma cell clone reduces the supply of the amyloid precursor protein and can result in a major regression of the deposits. Amyloid-related nephrotic syndrome and renal failure are potentially reversible. Conventional-dose melphalan as standard treatment can prolong the median duration of survival about 10 months, but the clinical response rates with improvement of impaired organ function are low with a slow response. Upfront high-dose chemotherapy with autologous peripheral blood stem cell transplantation is much more effective and can result in a major improvement of the patient's clinical condition, but the treatment-related toxicity can be relevant due to impaired organ function. The initial use of a conventional-dose chemotherapy consisting of vincristine, doxorubicin and dexamethasone (VAD) to achieve a remission and subsequent high-dose chemotherapy is the concept of a German trial. The improvement of the condition of the patient by this approach may increase the tolerability of high-dose chemotherapy and reduce transplantation-related problems.
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Affiliation(s)
- O Sezer
- Universitätsklinikum Charité, Campus Mitte, Medizinische Klinik, Humboldt Universität, Berlin, Germany
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Beesley JA, Bretherton CS, Jakob C, Andreas EL, Intrieri JM, Uttal TA. A comparison of cloud and boundary layer variables in the ECMWF forecast model with observations at Surface Heat Budget of the Arctic Ocean (SHEBA) ice camp. ACTA ACUST UNITED AC 2000. [DOI: 10.1029/2000jd900079] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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40
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Merkelbach-Bruse S, Jakob C, Tietze L, Schröder W, Rath W, Füzesi L. Consensus polymerase chain reaction and enzyme-linked immunosorbent assay for human papillomavirus detection and typing in cervical specimens. Diagn Mol Pathol 1999; 8:32-8. [PMID: 10408791 DOI: 10.1097/00019606-199903000-00006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Human papillomavirus (HPV) infection is common in cervical intraepithelial neoplasia (CIN). This study investigates HPV detection and typing assay based on polymerase chain reaction amplification of L1 open reading frame with general primers GP5/GP6, followed by enzyme-linked immunosorbent assay detection with type-specific DNA probes. To determine the sensitivity of this assay, formalin-fixed CaSki cells were used as reference cell lines. Fifty copies of viral DNA diluted in DNA from 100,000 noninfected cells could be detected. This assay was also investigated for HPV detection and typing of 67 cervical specimens diagnosed with with CIN III or carcinoma in situ (CIS) and their adjacent squamous epithelium. The CIN III lesions were infected in approximately 80% of the samples, 81% in the neighboring CIN II, and 68% in CIN I. The HPV infection was even detectable in 54% of nondysplastic epithelium located near a CIN III lesion.
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Jakob C, LaCount M, Lewinski K, Roberts J, Lebioda L. Catalytic conformation of Pseudomonas7A glutaminase-asparaginase (PGA): crystal structure of the PGA–SO 42−–NH 4+complex at 1.7 Å resolution. Acta Crystallogr A 1996. [DOI: 10.1107/s0108767396095062] [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: 11/11/2022] Open
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Mathis J, Seemann U, Weyh T, Jakob C, Struppler A. The boundary effect in magnetic stimulation. Analysis at the peripheral nerve. Electroencephalogr Clin Neurophysiol 1995; 97:238-45. [PMID: 7489685 DOI: 10.1016/0013-4694(95)00091-c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The optimal stimulus position for a figure-8-shaped coil for magnetic stimulation of the ulnar nerve at the wrist was not coincident with the optimal electrical stimulus point but was shifted 18.3 mm to the ulnar side (P < 0.01). For the median nerve the optimal stimulus site was 9.6 mm radial to the optimal position for electrical stimulation (P < 0.05). This shift of the stimulus point for magnetic stimulation is significantly smaller after interposition of a homogenous electrically conducting medium between coil and arm but not changed after interposition of distilled water. This so-called boundary effect is therefore due to the different conductivities of the medium interposed between coil and nerve. It may also distort precise localisation of other excitable structures such as cranial nerves, nerve roots and cortical areas by means of magnetic stimuli. The amplitudes of the compound muscle action potentials elicited with identical magnetic stimulus strength were larger after the interposition of isotonic solution between coil and skin but not after interposition of distilled water. Consideration of the boundary effect provided an improved response amplitude to magnetic stimulation, but this could not adequately compensate for its poor localisation compared to electrical stimulation.
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Affiliation(s)
- J Mathis
- Dept. of Neurology, University Hospital, Berne, Switzerland
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Mathis J, Seemann U, Weyh T, Jakob C, Struppler A. The boundary effect in magnetic stimulation. Analysis at the peripheral nerve. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/0924-980x(95)00091-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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44
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Jakob C, Götz H, Hellmann T, Hellmann KP, Reymann S, Flörke H, Thinnes FP, Hilschmann N. Studies on human porin: XIII. The type-1 VDAC 'porin 31HL' biotinylated at the plasmalemma of trypan blue excluding human B lymphocytes. FEBS Lett 1995; 368:5-9. [PMID: 7542206 DOI: 10.1016/0014-5793(95)00465-l] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.9] [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: 01/25/2023]
Abstract
In 1989, we demonstrated for the first time the expression of the VDAC 'Porin 31HL' in the plasmalemma of human B lymphocytes, then giving first evidence of a multi-topological expression of VDAC. Meanwhile, data from this and other laboratories support our proposal of a multi-compartment distribution of the channel in mammalian tissues. Here, by biotinylation of plasmalemma-integrated proteins of proven living B lymphocytes, followed by two-dimensional electrophoresis, immuno- and streptavidin affinity blotting, we show that part of the channel molecules can be labelled at the outer membrane of the cells. Thus, by a relevant approach our results invalidate objections concerning putative cross-reactivity of anti-human Type-1 porin antibodies with non-VDAC proteins at the outer cell membrane.
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Affiliation(s)
- C Jakob
- Max-Planck-Institut für experimentelle Medizin, Abt. Immunchemie, Göttingen, Germany
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Reymann S, Flörke H, Heiden M, Jakob C, Stadtmüller U, Steinacker P, Lalk VE, Pardowitz I, Thinnes FP. Further evidence for multitopological localization of mammalian porin (VDAC) in the plasmalemma forming part of a chloride channel complex affected in cystic fibrosis and encephalomyopathy. Biochem Mol Med 1995; 54:75-87. [PMID: 8581362 DOI: 10.1006/bmme.1995.1011] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- S Reymann
- Max-Planck-Institut für Experimentelle Medizin, Abteilung Immunchemie, Göttingen, Germany
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46
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Struppler A, Gerilovsky L, Jakob C. Self-generated rapid taps directed to the opposite forearm in man: anticipatory reduction in the muscle activity of the target arm. Neurosci Lett 1993; 159:115-8. [PMID: 8264950 DOI: 10.1016/0304-3940(93)90812-y] [Citation(s) in RCA: 19] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A brief hammer tap applied passively (by the experimenter) to the forearm elicits a short-latency reflex response in the forearm flexors and extensors. When the same tap is performed actively (by the subject) using the opposite forearm, the reflex response is preceded by a short-lasting anticipatory reduction in the muscle activity appearing around the impact. This anticipatory reduction is interpreted as an alternative mode of feedforward motor control associated with damping of kinetic impulses generated within the bimanual system.
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Affiliation(s)
- A Struppler
- Klinikum rechts der Isar der Technischen Universität München, Germany
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Abstract
A new biopotential amplifier is described in which the stimulus artifact from recordings of electrically or magnetically evoked biopotentials is minimized by a special active filter. The amplifier is tested in different experiments and the recordings are compared to standard EMG recordings.
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Affiliation(s)
- C Jakob
- Technische Universität München, FRG
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48
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Jakob C. [Food for old people]. Dtsch Schwesternztg 1969; 22:304. [PMID: 5193147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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