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Damanakis AI, Gebauer F, Stapper A, Schlößer HA, Ghadimi M, Schmidt T, Schiffmann LM, Fuchs H, Zander T, Quaas A, Bruns CJ, Schroeder W. Combined regression score predicts outcome after neoadjuvant treatment of oesophageal cancer. Br J Cancer 2023; 128:2025-2035. [PMID: 36966235 PMCID: PMC10206077 DOI: 10.1038/s41416-023-02232-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 02/18/2023] [Accepted: 03/07/2023] [Indexed: 03/27/2023] Open
Abstract
BACKGROUND Histopathologic regression following neoadjuvant treatment (NT) of oesophageal cancer is a prognostic factor of survival, but the nodal status is not considered. Here, a score combining both to improve prediction of survival after neoadjuvant therapy is developed. METHODS Seven hundred and fifteen patients with oesophageal squamous cell (SCC) or adenocarcinoma (AC) undergoing NT and esophagectomy were analysed. Histopathologic response was classified according to percentage of vital residual tumour cells (VRTC): complete response (CR) without VRTC, major response with <10% VRTC, minor response with >10% VRTC. Nodal stage was classified as ypN0 and ypN+. Kaplan-Meier and Cox regression were used for survival analysis. RESULTS Survival analysis identified three groups with significantly different mortality risks: (1) low-risk group for CR (ypT0N0) with 72% 5-year overall survival (5y-OS), (2) intermediate-risk group for minor/major responders and ypN0 with 59% 5y-OS, and (3) high-risk group for minor/major responders and ypN+ with 20% 5y-OS (p < 0.001). Median survival in AC and SCC cohorts were comparable (3.8 (CI 95%: 3.1, 5.3) vs. 4.6 years (CI 95%: 3.3, not reached), p = 0.3). CONCLUSIONS Histopathologic regression and nodal status should be combined for estimating AC and SCC prognosis. Poor survival in the high-risk group highlights need for adjuvant therapy.
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Affiliation(s)
- A I Damanakis
- Department of General, Visceral, Cancer and Transplantation Surgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - F Gebauer
- Department of General and Visceral Surgery, Helios University Hospital of Wuppertal, Wuppertal, Germany
| | - A Stapper
- Department of General, Visceral, Cancer and Transplantation Surgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - H A Schlößer
- Department of General, Visceral, Cancer and Transplantation Surgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - M Ghadimi
- Department of General Visceral and Endocrine Surgery, Stadt Soest Hospital, Soest, Germany
| | - T Schmidt
- Department of General, Visceral, Cancer and Transplantation Surgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - L M Schiffmann
- Department of General, Visceral, Cancer and Transplantation Surgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - H Fuchs
- Department of General, Visceral, Cancer and Transplantation Surgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - T Zander
- Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, Gastrointestinal Cancer Group Cologne GCGC Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - A Quaas
- Institute of Pathology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - C J Bruns
- Department of General, Visceral, Cancer and Transplantation Surgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - W Schroeder
- Department of General, Visceral, Cancer and Transplantation Surgery, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany.
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Zhang B, Aravind I, Yang S, Weng S, Zhao B, Schroeder C, Schroeder W, Thomas M, Umstattd R, Singleton D, Sanders J, Jung H, Cronin SB. Plasma-enhanced electrostatic precipitation of diesel exhaust particulates using nanosecond high voltage pulse discharge for mobile source emission control. Sci Total Environ 2022; 851:158181. [PMID: 35988598 DOI: 10.1016/j.scitotenv.2022.158181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/31/2022] [Accepted: 08/17/2022] [Indexed: 06/15/2023]
Abstract
This study reports enhancement in the electrostatic precipitation (ESP) of diesel engine exhaust particulates using high voltage nanosecond pulse discharge in conjunction with a negative direct current (DC) bias voltage. The high voltage (20 kV) nanosecond pulses produce ion densities that are several orders of magnitude higher than those in the corona produced by a standard DC-only ESP. This plasma-enhanced electrostatic precipitator (PE-ESP) demonstrated 95 % remediation of PM and consumes less than 1 % of the engine power (i.e., 37 kW diesel engine at 75 % load). While the DC-only ESP remediation increases linearly with applied voltage, the plasma-enhanced ESP remains approximately constant over the applied range of negative DC biases. Numerical simulations of the PE-ESP process agree with the DC-only experimental results and enable us to verify the charge-based mechanism of enhancement provided by the nanosecond high voltage pulse plasma. Two different reactor configurations with different flow rates yielded the same remediation values despite one having half the flow rate of the other. This indicates that the reactor can be made even smaller without sacrificing performance. Here, this study finds that the plasma enhancement enables high remediation values at low DC voltages and smaller ESP reactors to be made with high remediation.
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Affiliation(s)
- Boxin Zhang
- Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90089, USA
| | - Indu Aravind
- Department of Physics and Astronomy, University of Southern California, Los Angeles, CA 90089, USA
| | - Sisi Yang
- Department of Physics and Astronomy, University of Southern California, Los Angeles, CA 90089, USA
| | - Sizhe Weng
- Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA
| | - Bofan Zhao
- Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA
| | - Christi Schroeder
- Department of Physics and Astronomy, University of Southern California, Los Angeles, CA 90089, USA
| | - William Schroeder
- Department of Physics and Astronomy, University of Southern California, Los Angeles, CA 90089, USA
| | - Mark Thomas
- Transient Plasma Systems, Inc., Torrance, CA 90501, USA
| | - Ryan Umstattd
- Transient Plasma Systems, Inc., Torrance, CA 90501, USA
| | - Dan Singleton
- Transient Plasma Systems, Inc., Torrance, CA 90501, USA
| | - Jason Sanders
- Transient Plasma Systems, Inc., Torrance, CA 90501, USA
| | - Heejung Jung
- Department of Mechanical Engineering, University of California, Riverside, Riverside, CA 92507, USA; College of Engineering-Center for Environmental Research and Technology (CE-CERT), University of California, Riverside, Riverside, CA 92507, USA
| | - Stephen B Cronin
- Department of Physics and Astronomy, University of Southern California, Los Angeles, CA 90089, USA; Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, CA 90089, USA; Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA.
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Montefusco D, Jamil M, Maczis MA, Schroeder W, Levi M, Ranjit S, Allegood J, Bandyopadhyay D, Retnam R, Spiegel S, Cowart LA. Sphingosine Kinase 1 Mediates Sexual Dimorphism in Fibrosis in a Mouse Model of NASH. Mol Metab 2022; 62:101523. [PMID: 35671973 PMCID: PMC9194589 DOI: 10.1016/j.molmet.2022.101523] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 05/04/2022] [Accepted: 05/25/2022] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE Men with non-alcoholic fatty liver disease (NAFLD) are more likely to progress to nonalcoholic steatohepatitis (NASH) and liver fibrosis than women. However, the underlying molecular mechanisms of this dimorphism is unclear. We have previously shown that mice with global deletion of SphK1, the enzyme that produces the bioactive sphingolipid metabolite sphingosine 1-phosphate (S1P), were protected from development of NASH. The aim of this study was to elucidate the role of hepatocyte-specific SphK1 in development of NASH and to compare its contribution to hepatosteatosis in male and female mice. RESULTS We generated hepatocyte-specific SphK1 knockout mice (SphK1-hKO). Unlike the global knockout, SphK1-hKO male mice were not protected from diet-induced steatosis, inflammation, or fibrogenesis. In contrast, female SphK1-hKO mice were protected from inflammation. Surprisingly, however, in these female mice, there was a ∼10-fold increase in the fibrosis markers Col1α1 and 2-3 fold induction of alpha smooth muscle actin and the pro-fibrotic chemokine CCL5. Because increased fibrosis in female SphK1-hKO mice occurred despite an attenuated inflammatory response, we investigated the crosstalk between hepatocytes and hepatic stellate cells, central players in fibrosis. We found that estrogen stimulated release of S1P from female hepatocytes preventing TGFβ-induced expression of Col1α1 in HSCs via S1PR3. CONCLUSIONS The results revealed a novel pathway of estrogen-mediated cross-talk between hepatocytes and HSCs that may contribute to sex differences in NAFLD through an anti-fibrogenic function of the S1P/S1PR3 axis. This pathway is susceptible to pharmacologic manipulation, which may lead to novel therapeutic strategies.
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Affiliation(s)
- David Montefusco
- Virginia Commonwealth University, Department of Biochemistry and Molecular Biology, VA, USA.
| | - Maryam Jamil
- Virginia Commonwealth University, Department of Biochemistry and Molecular Biology, VA, USA
| | - Melissa A Maczis
- Virginia Commonwealth University, Department of Biochemistry and Molecular Biology, VA, USA
| | - William Schroeder
- Virginia Commonwealth University, Department of Biochemistry and Molecular Biology, VA, USA
| | - Moshe Levi
- Department of Biochemistry and Molecular & Cellular Biology, Georgetown University, USA
| | - Suman Ranjit
- Department of Biochemistry and Molecular & Cellular Biology, Georgetown University, USA
| | - Jeremy Allegood
- Virginia Commonwealth University, Department of Biochemistry and Molecular Biology, VA, USA
| | | | - Reuben Retnam
- Virginia Commonwealth University Department of Biostatistics, VA, USA
| | - Sarah Spiegel
- Virginia Commonwealth University, Department of Biochemistry and Molecular Biology, VA, USA
| | - L Ashley Cowart
- Virginia Commonwealth University, Department of Biochemistry and Molecular Biology, VA, USA; Hunter Holmes McGuire VAMC, Richmond, VA, USA
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Ribeiro HA, Vieira LS, Scindia Y, Adhikari B, Wheeler M, Knapp A, Schroeder W, Mehrad B, Laubenbacher R. Multi-scale mechanistic modelling of the host defence in invasive aspergillosis reveals leucocyte activation and iron acquisition as drivers of infection outcome. J R Soc Interface 2022; 19:20210806. [PMID: 35414216 PMCID: PMC9006013 DOI: 10.1098/rsif.2021.0806] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Aspergillus species are ubiquitous environmental moulds, with spores inhaled daily by most humans. Immunocompromised hosts can develop an invasive infection resulting in high mortality. There is, therefore, a pressing need for host-centric therapeutics for this infection. To address it, we created a multi-scale computational model of the infection, focused on its interaction with the innate immune system and iron, a critical nutrient for the pathogen. The model, parameterized using published data, was found to recapitulate a wide range of biological features and was experimentally validated in vivo. Conidial swelling was identified as critical in fungal strains with high growth, whereas the siderophore secretion rate seems to be an essential prerequisite for the establishment of the infection in low-growth strains. In immunocompetent hosts, high growth, high swelling probability and impaired leucocyte activation lead to a high conidial germination rate. Similarly, in neutropenic hosts, high fungal growth was achieved through synergy between high growth rate, high swelling probability, slow leucocyte activation and high siderophore secretion. In summary, the model reveals a small set of parameters related to fungal growth, iron acquisition and leucocyte activation as critical determinants of the fate of the infection.
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Affiliation(s)
- Henrique Al Ribeiro
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL, USA
| | - Luis Sordo Vieira
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL, USA.,Department of Psychiatry, University of Florida, Gainesville, FL, USA
| | - Yogesh Scindia
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL, USA.,Department of Pathology, University of Florida, Gainesville, FL, USA
| | - Bandita Adhikari
- Center for Quantitative Medicine, School of Medicine, University of Connecticut, Farmington, CT, USA
| | - Matthew Wheeler
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL, USA
| | - Adam Knapp
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL, USA
| | | | - Borna Mehrad
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL, USA
| | - Reinhard Laubenbacher
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, University of Florida, Gainesville, FL, USA
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5
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Quaas A, Schloesser H, Fuchs H, Zander T, Arolt C, Scheel AH, Rueschoff J, Bruns C, Buettner R, Schroeder W. Improved Tissue Processing in Esophageal Adenocarcinoma After Ivor Lewis Esophagectomy Allows Histological Analysis of All Surgically Removed Lymph Nodes with Significant Effects on Nodal UICC Stages. Ann Surg Oncol 2021; 28:3975-3982. [PMID: 33305335 PMCID: PMC8184552 DOI: 10.1245/s10434-020-09450-1] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 11/16/2020] [Indexed: 01/02/2023]
Abstract
BACKGROUND In esophageal carcinoma, the numbers of metastatic and total removed lymph nodes (LN) are well-established variables of long-term prognosis. The overall rate of retrieved LN depends on neoadjuvant treatment, the extent of surgical lymphadenectomy, and the modality of the pathological workup. The question in this study is whether technically extended histopathological preparation can increase the number of detected (metastatic) LN with an impact on nodal UICC staging. PATIENTS AND METHODS A cohort of 77 patients with esophageal adenocarcinoma was treated with Ivor Lewis esophagectomy including standardized two-field lymphadenectomy. The specimens were grossed, and all manually detectable LN were retrieved. The remaining tissue was completely embedded by the advanced "acetone compression" retrieval technique. The primary outcome parameter was the total number of detected lymph nodes before and after acetone workup. RESULTS A mean number of 23,1 LN was diagnosed after standard manual LN preparation. With complete embedding of the fatty tissue using acetone compression, the number increased to 40.5 lymph nodes (p < 0.0001). The mean number of metastatic LN increased from 3.2 to 4.2 nodal metastases following acetone compression (p < 0.0001). Additional LN metastases which caused a change in the primary (y)pN stage were found in ten patients (13.0%). CONCLUSIONS Advanced lymph node retrieval by acetone compression allows a reliable statement on the real number of removed LN. Results demonstrate an impact on the nodal UICC stage. A future multicenter study will examine the prognostic impact of improved lymph node retrieval on long-term oncologic outcome.
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Affiliation(s)
- A Quaas
- Institute of Pathology, Gastrointestinal Cancer Group Cologne (GCGC), University Hospital Cologne, Cologne, Germany.
| | - H Schloesser
- Department of General, Visceral, Cancer and Transplantation Surgery, University Hospital Cologne, Cologne, Germany
| | - H Fuchs
- Department of General, Visceral, Cancer and Transplantation Surgery, University Hospital Cologne, Cologne, Germany
| | - T Zander
- Department of Internal Medicine I, University Hospital Cologne, Cologne, Germany
| | - C Arolt
- Institute of Pathology, Gastrointestinal Cancer Group Cologne (GCGC), University Hospital Cologne, Cologne, Germany
| | - A H Scheel
- Institute of Pathology, Gastrointestinal Cancer Group Cologne (GCGC), University Hospital Cologne, Cologne, Germany
| | - J Rueschoff
- Institute of Pathology, Nordhessen and Targos Molecular Pathology GmbH, Kassel, Germany
| | - C Bruns
- Department of General, Visceral, Cancer and Transplantation Surgery, University Hospital Cologne, Cologne, Germany
| | - R Buettner
- Institute of Pathology, Gastrointestinal Cancer Group Cologne (GCGC), University Hospital Cologne, Cologne, Germany
| | - W Schroeder
- Department of General, Visceral, Cancer and Transplantation Surgery, University Hospital Cologne, Cologne, Germany
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6
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Ratliff P, Nutley K, Schroeder W, Cottingham L. Intraosseous administration of 4‐factor prothrombin complex concentrate prior to emergent surgery after receiving apixaban. J Clin Pharm Ther 2019; 45:577-579. [DOI: 10.1111/jcpt.13094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 11/19/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Patrick Ratliff
- Department of Pharmacy Services Saint Joseph Hospital Lexington KY USA
| | - Kaitlin Nutley
- Department of Pharmacy Services Saint Joseph Hospital Lexington KY USA
| | - William Schroeder
- Department of Pharmacy Services Saint Joseph Hospital Lexington KY USA
| | - Lauren Cottingham
- Department of Pharmacy Services Saint Joseph Hospital Lexington KY USA
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7
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Yang S, Subramanian S, Singleton D, Schroeder C, Schroeder W, Gundersen MA, Cronin SB. First results on transient plasma-based remediation of nanoscale particulate matter in restaurant smoke emissions. Environ Res 2019; 178:108635. [PMID: 31514016 DOI: 10.1016/j.envres.2019.108635] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 05/15/2019] [Revised: 08/06/2019] [Accepted: 08/06/2019] [Indexed: 06/10/2023]
Abstract
Recent studies have shown that nanoscale particulate matter produced in commercial charbroiling processes represents a serious health hazard and has been linked to various forms of cancer and cardiopulmonary disease. In this study, we propose a highly effective method for treating restaurant smoke emissions using a transient pulsed plasma reactor produced by nanosecond high voltage pulses. We measure the size and relative mass distributions of particulate matter (PM) produced in commercial charbroiling processes (e.g., cooking of hamburger meat) both with and without the plasma treatment. Here, the plasma discharge is produced in a 3" diameter cylindrical reactor with a 5-10 ns high voltage (17 kV) pulse generator. The distribution of untreated nanoparticle sizes is peaked around 125-150 nm in diameter, as measured using a scanning mobility particle sizer (SMPS) spectrometer. With plasma treatment, we observe up to a 55-fold reduction in relative particle mass and a significant reduction in the nanoparticle size distribution using this method. The effectiveness of the nanoscale PM remediation increases with both the pulse repetition rate and pulse voltage, demonstrating the scalability of this approach for treating particulate matter at higher flow rates and larger diameter reactors.
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Affiliation(s)
- Sisi Yang
- Department of Physics and Astronomy, University of Southern California, Los Angeles, CA 90089, USA
| | - Sriram Subramanian
- Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA
| | - Dan Singleton
- Transient Plasma Systems, Inc., Torrance, CA 90501, USA
| | - Christi Schroeder
- Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA
| | - William Schroeder
- Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA
| | - Martin A Gundersen
- Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA; Department of Physics and Astronomy, University of Southern California, Los Angeles, CA 90089, USA
| | - Stephen B Cronin
- Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA; Department of Physics and Astronomy, University of Southern California, Los Angeles, CA 90089, USA.
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8
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Brinkmann S, Chang DH, Kuhr K, Hoelscher AH, Spiro J, Bruns CJ, Schroeder W. Stenosis of the celiac trunk is associated with anastomotic leak after Ivor-Lewis esophagectomy. Dis Esophagus 2019; 32:5367736. [PMID: 30820543 DOI: 10.1093/dote/doy107] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Transthoracic esophagectomy with gastric tube formation is the surgical treatment of choice for esophageal cancer. The surgical reconstruction induces changes of gastric microcirculation, which are recognized as potential risk factors of anastomotic leak. This prospective observational study investigates the association of celiac trunk (TC) stenosis with postoperative anastomotic leak. One hundred fifty-four consecutive patients with esophageal cancer scheduled for Ivor-Lewis esophagectomy were included. Preoperative staging computed tomography (CT) was used to identify TC stenosis. Any narrowing of the lumen due to atherosclerotic changes was classified as stenosis. Percentage of stenotic changes was calculated using the North American Symptomatic Carotid Endarterectomy Trial formula. Multivariable analysis was used to identify possible risk factors for leak. The overall incidence of TC stenosis was 40.9%. Anastomotic leak was identified in 15 patients (9.7%). Incidence of anastomotic leak in patients with stenosis was 19.4% compared to 2.3% in patients without stenosis. Incidence of stenosis in patients with leak was 86.7% (13 of 15 patients) and significantly higher than 38.8% (54 of 139 patients) in patients without leak (P < 0.001). There was a significant difference in median degree of TC stenosis (50.0% vs 39.4%; P = 0.032) in patients with and without leak. In the multivariable model, TC stenosis was an independent risk factor for anastomotic leak (odds ratio: 5.98, 95% CI: 1.58-22.61). TC stenosis is associated with postoperative anastomotic leak after Ivor-Lewis esophagectomy. Routine assessment of TC for possible stenosis is recommended to identify patients at risk.
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Affiliation(s)
- S Brinkmann
- Department of General, Visceral and Cancer Surgery, University of Cologne, Germany
| | - D H Chang
- Department of Radiology, University of Cologne, Germany
| | - K Kuhr
- Institute of Medical Statistics, Informatics and Epidemiology, University of Cologne, Germany
| | - A H Hoelscher
- Department of Surgery, AGAPLESION Markus Krankenhaus, Frankfurt, Germany
| | - J Spiro
- Department of Radiology, University of Cologne, Germany
| | - C J Bruns
- Department of General, Visceral and Cancer Surgery, University of Cologne, Germany
| | - W Schroeder
- Department of General, Visceral and Cancer Surgery, University of Cologne, Germany
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9
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Kommoss S, Heitz F, Winterhoff BJN, Wang C, Sehouli J, Aliferis C, Kimmig R, Wang J, Ma S, de Gregorio N, Mahner S, du Bois A, Tourani R, Park-Simon TW, Baumann K, Taran FA, Kommoss F, Schroeder W, Dowdy SC, Pfisterer J. Significant Overall Survival Improvement In Proliferative Subtype Ovarian Cancer Patients Receiving Bevacizumab. Geburtshilfe Frauenheilkd 2018. [DOI: 10.1055/s-0038-1675442] [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] Open
Affiliation(s)
- S Kommoss
- Department of Women's Health, Tuebingen University Hospital, Tuebingen, Germany
| | - F Heitz
- Department of Gynecologic Oncology, Kliniken Essen-Mitte, Essen, Germany
| | - BJN Winterhoff
- Division of Gynecologic Oncology, University of Minnesota, Minneapolis, MN
| | - C Wang
- Mayo Clinic, Rochester, MN
| | - J Sehouli
- AGO and Charité Campus Virchow-Klinikum, Berlin, Germany
| | - C Aliferis
- Institute for Health Informatics (IHI), Academic Health Center, University of Minnesota, Minneapolis, MN
| | - R Kimmig
- Department of Gynecology and Obstetrics, University of Duisburg-Essen, Essen, Germany
| | - J Wang
- Institute for Health Informatics (IHI), Academic Health Center, University of Minnesota, Minneapolis, MN
| | - S Ma
- Institute for Health Informatics (IHI), Academic Health Center, University of Minnesota, Minneapolis, MN
| | - N de Gregorio
- Department of Obstrics and Gynecology, Universtity of Ulm, Ulm, Germany
| | - S Mahner
- Ludwig-Maximilians-Universität München and University Medical Center Hamburg-Eppendorf, Germany, Munich, Germany
| | - A du Bois
- Department of Gynecologic Oncology, Kliniken Essen-Mitte, Essen, Germany
| | - R Tourani
- Institute for Health Informatics (IHI), Academic Health Center, University of Minnesota, Minneapolis, MN
| | | | - K Baumann
- Klinikum der Stadt Ludwigshafen am Rhein gGmbH, Ludwigshafen, Germany
| | - FA Taran
- Department of Women's Health, Tuebingen University Hospital, Tuebingen, Germany
| | - F Kommoss
- Institut für Pathologie im Medizin Campus Bodensee, Friedrichshafen, Germany
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Mege D, Depypere L, Piessen G, Slaman AE, Wijnhoven BPL, Hölscher A, Nilsson M, van Berge Henegouwen MI, van Lanschot JJB, Schroeder W, Thomas PA, Nafteux P, D'Journo XB. Surgical management of esophageal sarcoma: a multicenter European experience. Dis Esophagus 2018; 31:4850444. [PMID: 29444281 DOI: 10.1093/dote/dox146] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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] [Received: 10/16/2017] [Accepted: 11/22/2017] [Indexed: 12/11/2022]
Abstract
Esophageal sarcomas are rare and evidence in literature is scarce making their management difficult. The objective is to report surgical and oncological outcomes of esophageal sarcoma in a large multicenter European cohort. This is a retrospective multicenter study including all patients who underwent en-bloc esophagectomy for esophageal sarcoma in seven European tertiary referral centers between 1987 and 2016. The main outcomes and measures are pathological results, early and long-term outcomes. Among 10,936 esophageal resections for cancer, 21 (0.2%) patients with esophageal sarcoma were identified. The majority of tumors was located in the middle (n = 7) and distal (n = 9) third of the esophagus. Neoadjuvant chemoradiotherapy was performed in five patients. All the patients underwent en-bloc transthoracic esophagectomy (19 open, 2 minimally invasive). Postoperative mortality occurred in 1 patient (5%). One patient received adjuvant chemotherapy. Definitive pathological results were carcinosarcoma (n = 7), leiomyosarcoma (n = 5), and other types of sarcoma (n = 9). Microscopic R1 resection was present in one patient (5%) and seven patients (33%) had positive lymph nodes. Median follow-up was 16 (3-79) months in 20 of 21 patients (95%). One-, 3-, and 5-year overall survival rates were 74%, 43%, and 35%, respectively. One-, 3- and 5-years disease-free survival rates were 58%, 40%, and 33%, respectively. Median overall survival was 6 months in N+ patients vs. 37 months for N0 patients (p = 0.06). At the end of the follow-up period, nine patients had died from cancer recurrences (43%), three patients died from other reasons (14%), one patient was still alive with recurrence (5%) and the seven remaining patients were free of disease (33%). Recurrence was local (n = 3), metastatic (n = 3), or both (n = 4). In conclusion, carcinosarcoma and leiomyosarcoma were the most common esophageal sarcoma histological subtypes. Lymph node involvement was seen in one third of cases. A transthoracic en-bloc esophagectomy with radical lymphadenectomy should be the best surgical option to achieve complete resection. Long-term survival remained poor with a high local and distant recurrence rate.
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Affiliation(s)
- D Mege
- Department of Thoracic and Esophageal Surgery, Marseille
| | - L Depypere
- Department of Thoracic Surgery, Leuven, Belgium
| | - G Piessen
- Department of Digestive and Oncological Surgery, Lille, France
| | - A E Slaman
- Department of Surgery and Amsterdam Cancer Center, Amsterdam
| | - B P L Wijnhoven
- Department of Surgery, Erasmus University Medical Center, Rotterdam, the Netherlands
| | | | - M Nilsson
- Department of Surgery, Karolinska Institute, Stockholm, Sweden
| | | | - J J B van Lanschot
- Department of Surgery, Erasmus University Medical Center, Rotterdam, the Netherlands
| | | | - P A Thomas
- Department of Thoracic and Esophageal Surgery, Marseille
| | - P Nafteux
- Department of Thoracic Surgery, Leuven, Belgium
| | - X B D'Journo
- Department of Thoracic and Esophageal Surgery, Marseille
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11
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Robinson K, Ryack BL, Moeller G, Post R, Schroeder W. A Computer-based Diagnostic/Patient Management System for Isolated Environments. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1635430] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Four studies were conducted to examine the data collection procedures and diagnostic accuracy of Navy Hospital Corpsmen for patients “with acute abdominal pain and to determine the compatibility of their skills with the requirements of a computer-aided diagnostic system for abdominal pain. Findings suggest that instruction in specific data collection procedures results in an increase in the amount of data collected. It does not appear to improve either the accuracy of the data collected or the diagnosis. The instructed corpsmen collected more of the required data for effective use of a computer-based diagnostic system for abdominal pain.
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12
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Moore NT, Schroeder W, Staszyk C. Equine odontoclastic tooth resorption and hypercementosis affecting all cheek teeth in two horses: Clinical and histopathological findings. EQUINE VET EDUC 2015. [DOI: 10.1111/eve.12387] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- N. T. Moore
- Moore Equine Medical and Dental Services; Georgetown Texas USA
| | - W. Schroeder
- Equine Clinic: Surgery and Radiology; Freie Universität Berlin; Germany
| | - C. Staszyk
- Institute of Veterinary Anatomy, Histology and Embryology; Faculty of Veterinary Medicine; Justus-Liebig-University Giessen; Germany
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13
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Fisch A, Schroeder W, Smart R, Patel O. Potent suppression of proliferation of carcinoma cells by a novel non-nucleoside reverse transcriptase inhibitor. J Clin Oncol 2015. [DOI: 10.1200/jco.2015.33.7_suppl.367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
367 Background: The treatment of choice for many patients with advanced carcinomas is surgery in combination with aggressive chemo- and radiotherapy. Unfortunately, even with the aggressive regime of therapy against carcinomas, there is neither guarantee of life-long remission nor of further spread to other organs including the urogenital system. However, recent advances have identified the reactivation of telomerase as a pivotal element in the development of cancer. Therefore, the objective of this study was to evaluate the efficacy of a novel anti-telomerase (GV6) developed at our Institution on MCF7 (ER+, PR+, HER2+) and MDA-MB 231 (ER-, PR-, HER2-) cell lines. Methods: Seeded flasks (T-75) were supplemented with 25μm GV6 (n=4-6) or solvent alone (control, n=3) for 14 (short-term) or 27 (long-term) days. Cell viability and replicative senescence were both assessed using the Trypan Blue (Gibco) and SA-β-Gal (Cell Signaling Tech) methods, respectively. Results: By day 27, MCF7 flasks had a greater (p<0.05) number of viable cells (35.4% vs. 29%) compared to MDA-MB 231 cells. More senescent cells were observed in GV6 supplemented MDA-MB 231 (~75%) cells than in MCF7 (~60%) by day 27. Conclusions: Our results indicate that GV6 is an equally potent inhibitor of telomerase and merits further studies.
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Affiliation(s)
| | | | | | - Osman Patel
- Grand Valley State University, Allendale, MI
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14
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Trillsch F, Mahner S, Vettorazzi E, Woelber L, Reuss A, Baumann K, Keyver-Paik MD, Canzler U, Wollschlaeger K, Forner D, Pfisterer J, Schroeder W, Muenstedt K, Richter B, Fotopoulou C, Schmalfeldt B, Burges A, Ewald-Riegler N, de Gregorio N, Hilpert F, Fehm T, Meier W, Hillemanns P, Hanker L, Hasenburg A, Strauss HG, Hellriegel M, Wimberger P, Kommoss S, Kommoss F, Hauptmann S, du Bois A. Surgical staging and prognosis in serous borderline ovarian tumours (BOT): a subanalysis of the AGO ROBOT study. Br J Cancer 2015; 112:660-6. [PMID: 25562434 PMCID: PMC4333495 DOI: 10.1038/bjc.2014.648] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 11/27/2014] [Accepted: 12/06/2014] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Incomplete surgical staging is a negative prognostic factor for patients with borderline ovarian tumours (BOT). However, little is known about the prognostic impact of each individual staging procedure. METHODS Clinical parameters of 950 patients with BOT (confirmed by central reference pathology) treated between 1998 and 2008 at 24 German AGO centres were analysed. In 559 patients with serous BOT and adequate ovarian surgery, further recommended staging procedures (omentectomy, peritoneal biopsies, cytology) were evaluated applying Cox regression models with respect to progression-free survival (PFS). RESULTS For patients with one missing staging procedure, the hazard ratio (HR) for recurrence was 1.25 (95%-CI 0.66-2.39; P=0.497). This risk increased with each additional procedure skipped reaching statistical significance in case of two (HR 1.95; 95%-CI 1.06-3.58; P=0.031) and three missing steps (HR 2.37; 95%-CI 1.22-4.64; P=0.011). The most crucial procedure was omentectomy which retained a statistically significant impact on PFS in multiple analysis (HR 1.91; 95%-CI 1.15-3.19; P=0.013) adjusting for previously established prognostic factors as FIGO stage, tumour residuals, and fertility preservation. CONCLUSION Individual surgical staging procedures contribute to the prognosis for patients with serous BOT. In this analysis, recurrence risk increased with each skipped surgical step. This should be considered when re-staging procedures following incomplete primary surgery are discussed.
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Affiliation(s)
- F Trillsch
- Universitaetsklinikum Hamburg-Eppendorf, Klinik und Poliklinik fuer Gynaekologie, Martinistr. 52, 20246 Hamburg, Germany
| | - S Mahner
- Universitaetsklinikum Hamburg-Eppendorf, Klinik und Poliklinik fuer Gynaekologie, Martinistr. 52, 20246 Hamburg, Germany
| | - E Vettorazzi
- Universitaetsklinikum Hamburg-Eppendorf, Institut fuer Medizinische Biometrie und Epidemiologie, Martinistr. 52, 20246 Hamburg, Germany
| | - L Woelber
- Universitaetsklinikum Hamburg-Eppendorf, Klinik und Poliklinik fuer Gynaekologie, Martinistr. 52, 20246 Hamburg, Germany
| | - A Reuss
- Philipps-Universitaet Marburg, Koordinierungszentrum fuer Klinische Studien, Karl-von-Frisch-Str. 4, 35043 Marburg, Germany
| | - K Baumann
- Universitaetsklinikum Giessen u. Marburg GmbH, Klinik fuer Gynaekologie, Gyn. Endokrinologie und Onkologie, Baldingerstr., 35043 Marburg, Germany
| | - M-D Keyver-Paik
- Rheinische Friedrich-Wilhelms-Universitaet, Universitaets-Frauenklinik, Sigmund-Freud-Str. 25, 53127 Bonn, Germany
| | - U Canzler
- Technische Universitaet Dresden, Klinik und Poliklinik fuer Frauenheilkunde und Geburtshilfe, Fetscherstr. 74, 01307 Dresden, Germany
| | - K Wollschlaeger
- Universitaetsklinikum Magdeburg, Universitaets-Frauenklinik, Gerhart-Hauptmann-Str. 35, 39108 Magdeburg, Germany
| | - D Forner
- Sana-Klinikum Remscheid, Klinik fuer Frauenheilkunde und Geburtsmedizin, Burger Strasse 211, 42859 Remscheid, Germany
| | - J Pfisterer
- 1] Staedtisches Klinikum Solingen gGmbH, Klinik fuer Gynaekologie und Geburtshilfe, Gotenstrasse 1, 42653 Solingen, Germany [2] Zentrum fuer Gynaekologische Onkologie, Herzog-Friedrich-Str. 21, 24103 Kiel, Germany
| | - W Schroeder
- GYNAEKOLOGICUM Bremen, Schwachhauser Heerstrasse 367, 28211 Bremen, Germany
| | - K Muenstedt
- Universitaetsklinikum Giessen, Zentrum fuer Frauenheilkunde und Geburtshilfe, Klinikstrasse 33, 35352 Giessen, Germany
| | - B Richter
- Elblandkliniken Meissen-Radebeul GmbH & Co. KG, Frauenklinik, Heinrich-Zille-Str. 13, 01445 Radebeul, Germany
| | - C Fotopoulou
- Charité, Campus Virchow Klinikum, Frauenklinik, Augustenburger Platz 1, 13353 Berlin, Germany
| | - B Schmalfeldt
- Klinikum rechts der Isar der Technischen Universitaet, Frauen- und Poliklinik, Ismaninger Str. 22, 81675 Munich, Germany
| | - A Burges
- Klinikum der Universitaet Muenchen, Campus Grosshadern, Klinik und Poliklinik fuer Frauenheilkunde und Geburtshilfe, Marchioninistr.15, 81377 Munich, Germany
| | - N Ewald-Riegler
- Dr Horst Schmidt Klinik GmbH, Klinik fuer Gynaekologie und gynaekologische Onkologie, Ludwig-Erhard-Str. 100, 65199 Wiesbaden, Germany
| | - N de Gregorio
- Universitaetsklinikum Ulm, Frauenklinik, Prittwitzstrasse 43, 89075 Ulm, Germany
| | - F Hilpert
- Universitaetsklinikum Schleswig-Holstein, Campus Kiel, Klinik fuer Gynaekologie und Geburtshilfe, Michaelisstrasse 16, 24105 Kiel, Germany
| | - T Fehm
- 1] Universitaetsklinikum Tuebingen, Department fuer Frauengesundheit, Calwerstrasse 7, 72076 Tuebingen, Germany [2] Universitaetsklinikum Duesseldorf, Universitaetsfrauenklinik, Moorenstrasse 5, 40225 Duesseldorf, Germany
| | - W Meier
- Evangelisches Krankenhaus, Frauenklinik, Kirchfeldstrasse 40, 40217 Duesseldorf, Germany
| | - P Hillemanns
- Medizinische Hochschule Hannover, Frauenklinik, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - L Hanker
- 1] Klinikum der J.W. Goethe-Universitaet, Zentrum fuer Frauenheilkunde und Geburtshilfe, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany [2] Universitaetsklinikum Schleswig-Holstein, Campus Luebeck, Klinik fuer Gynaekologie und Geburtshilfe, Ratzeburger Allee 160, 23562 Luebeck, Germany
| | - A Hasenburg
- Universitaetsklinikum Freiburg, Frauenklinik, Hugstetter Str. 55, 79106 Freiburg im Breisgau, Germany
| | - H-G Strauss
- Universitaetsklinikum Halle (Saale), Universitaetsklinik und Poliklinik fuer Gynaekologie, Ernst-Grube-Str. 40, 06120 Halle (Saale), Germany
| | - M Hellriegel
- Georg-August-Universitaet Goettingen, Gynaekologie und Geburtshilfe, Robert-Koch-Str. 40, 37075 Goettingen, Germany
| | - P Wimberger
- 1] Technische Universitaet Dresden, Klinik und Poliklinik fuer Frauenheilkunde und Geburtshilfe, Fetscherstr. 74, 01307 Dresden, Germany [2] Universitaetsklinikum Essen, Klinik fuer Frauenheilkunde und Geburtshilfe, Essen, Germany
| | - S Kommoss
- 1] Dr Horst Schmidt Klinik GmbH, Klinik fuer Gynaekologie und gynaekologische Onkologie, Ludwig-Erhard-Str. 100, 65199 Wiesbaden, Germany [2] Universitaetsklinikum Tuebingen, Department fuer Frauengesundheit, Calwerstrasse 7, 72076 Tuebingen, Germany
| | - F Kommoss
- Institut fuer Pathologie, Referenzzentrum fuer Gynaekopathologie, A2,2, 68159 Mannheim, Germany
| | - S Hauptmann
- 1] Universitaetsklinikum Halle (Saale), Universitaetsklinik und Poliklinik fuer Gynaekologie, Ernst-Grube-Str. 40, 06120 Halle (Saale), Germany [2] Institut fuer Pathologie Trier-Dueren-Duesseldorf, Roonstrasse 30, 52351 Dueren, Germany
| | - A du Bois
- Kliniken Essen-Mitte, Klinik fuer Gynaekologische Onkologie, Henricistrasse 92, 45136 Essen, Germany
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15
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Trillsch F, Mahner S, Woelber L, Vettorazzi E, Reuss A, Baumann K, Keyver-Paik MD, Canzler U, Wollschlaeger K, Forner D, Pfisterer J, Schroeder W, Muenstedt K, Richter B, Fotopoulou C, Schmalfeldt B, Burges A, Ewald-Riegler N, De Gregorio N, Hilpert F, Fehm T, Meier W, Hillemanns P, Hanker L, Hasenburg A, Strauß HG, Hellriegel M, Wimberger P, du Bois A. Prognostische Bedeutung von Zeitintervall und Staging-Prozeduren für Patientinnen mit primären Borderline-Tumoren des Ovars (BOT): Eine Subgruppen-Analyse der Arbeitsgemeinschaft Gynäkologische Onkologie (AGO) ROBOT-Studie. Geburtshilfe Frauenheilkd 2014. [DOI: 10.1055/s-0034-1388590] [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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16
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Trillsch F, Mahner S, Woelber L, Vettorazzi E, Reuss A, Ewald-Riegler N, de Gregorio N, Fotopoulou C, Schmalfeldt B, Burges A, Hilpert F, Fehm T, Meier W, Hillemanns P, Hanker L, Hasenburg A, Strauss HG, Hellriegel M, Wimberger P, Baumann K, Keyver-Paik MD, Canzler U, Wollschlaeger K, Forner D, Pfisterer J, Schroeder W, Muenstedt K, Richter B, Kommoss F, Hauptmann S, du Bois A. Age-dependent differences in borderline ovarian tumours (BOT) regarding clinical characteristics and outcome: results from a sub-analysis of the Arbeitsgemeinschaft Gynaekologische Onkologie (AGO) ROBOT study. Ann Oncol 2014; 25:1320-1327. [PMID: 24618151 DOI: 10.1093/annonc/mdu119] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Approximately one-third of all borderline ovarian tumours (BOT) are diagnosed in patients with child-bearing potential. Detailed information regarding their specific characteristics and prognostic factors is limited. METHODS Clinical parameters of BOT patients treated between 1998 and 2008 in 24 German centres were retrospectively investigated. Central pathology review and prospective follow-up were carried out. Patients <40 versus ≥40 years were analysed separately and then compared regarding clinico-pathological variables and prognosis. RESULTS A total of 950 BOT patients with a median age of 49.1 (14.1-91.5) years were analysed [280 patients <40 years (29.5%), 670 patients ≥40 years (70.5%)]. Fertility-preserving surgery was carried out in 53.2% (149 of 280) of patients <40 years with preservation of the primarily affected ovary in 32 of these 149 cases (21.5%). Recurrence was significantly more frequent in patients <40 years (19.0% versus 10.1% 5-year recurrence rate, P < 0.001), usually in ovarian tissue, whereas disease-specific overall survival did not differ between the subgroups. In case of recurrent disease, malignant transformation was less frequent in younger than in older patients (12.0% versus 66.7%, P < 0.001), mostly presenting as invasive peritoneal carcinomatosis. Multivariate analysis for patients <40 years identified advanced International Federation of Gynecology and Obstetrics (FIGO) stage and fertility-sparing approach as independent prognostic factors negatively affecting progression-free survival (PFS) while, for patients ≥40 years, higher FIGO stage and incomplete staging was associated with impaired PFS. CONCLUSIONS Despite favourable survival, young BOT patients with child-bearing potential are at higher risk for disease recurrence. However, relapses usually remain BOT in the preserved ovaries as opposed to older patients being at higher risk for malignant transformation in peritoneal or distant localisation. Therefore, fertility-sparing approach can be justified for younger patients after thorough consultation.
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Affiliation(s)
- F Trillsch
- Department of Gynaecology and Gynaecologic Oncology
| | - S Mahner
- Department of Gynaecology and Gynaecologic Oncology.
| | - L Woelber
- Department of Gynaecology and Gynaecologic Oncology
| | - E Vettorazzi
- Department of Medical Biometry and Epidemiology, Universitätsklinikum Hamburg-Eppendorf, Hamburg
| | - A Reuss
- Department of Coordinating Center for Clinical Trials, Marburg
| | - N Ewald-Riegler
- Department of Gynaecology and Gynaecologic Oncology, Dr Horst Schmidt Klinik GmbH, Wiesbaden
| | - N de Gregorio
- Department of Gynaecolgy and Obstetrics, Universitätsklinikum Ulm, Ulm
| | - C Fotopoulou
- Department of Gynaecolgy, Charité, Campus Virchow Klinikum, Berlin
| | - B Schmalfeldt
- Department of Obstetrics and Gynaecolgy, Klinikum Rechts der Isar der Technischen Universität, Munich
| | - A Burges
- Department of Obstetrics and Gynaecolgy, Klinikum der Universität München, Munich
| | - F Hilpert
- Department of Gynaecolgy and Obstetrics, Universitätsklinikum Schleswig-Holstein, Kiel
| | - T Fehm
- Department of Gynaecolgy and Obstetrics, Universitätsklinikum Tübingen, Tuebingen
| | - W Meier
- Department of Gynaecolgy and Obstetrics, Evangelisches Krankenhaus, Duesseldorf
| | - P Hillemanns
- Department of Gynaecolgy and Obstetrics, Medizinische Hochschule Hannover, Hannover
| | - L Hanker
- Department of Gynaecolgy and Obstetrics, Klinikum der J.W. Goethe-Universität, Frankfurt/M; Department of Gynaecolgy and Obstetrics, Universitätsklinikum Schleswig-Holstein, Luebeck
| | - A Hasenburg
- Department of Obstetrics and Gynaecolgy, Universitätsklinikum Freiburg, Freiburg
| | - H G Strauss
- Department of Gynaecolgy and Obstetrics, Universitätsklinikum Halle/S., Halle/S
| | - M Hellriegel
- Department of Gynaecolgy and Obstetrics, Georg-August-Universität Göttingen, Goettingen
| | - P Wimberger
- Clinic of Gynaecolgy and Obstetrics, Universitätsklinikum Essen, Essen; Department of Gynaecolgy and Obstetrics, Universitätsklinikum Carl Gustav Carus, Dresden
| | - K Baumann
- Department of Gynaecolgy, Endocrinology and Oncology, Universitätsklinikum Gießen u. Marburg GmbH, Marburg
| | - M D Keyver-Paik
- Department of Obstetrics and Gynaecolgy, Rheinische Friedrich-Wilhelms-Universität, Bonn
| | - U Canzler
- Department of Gynaecolgy and Obstetrics, Universitätsklinikum Carl Gustav Carus, Dresden
| | - K Wollschlaeger
- Department of Gynaecolgy and Obstetrics, Universitätsklinikum Magdeburg, Magdeburg
| | - D Forner
- Department of Gynaecolgy and Obstetrics, Sana-Klinikum Remscheid, Remscheid
| | - J Pfisterer
- Department of Gynaecolgy and Obstetrics, Städtisches Klinikum Solingen gGmbH, Solingen; Zentrum für Gynäkologische Onkologie, Kiel
| | | | - K Muenstedt
- Department of Obstetrics and Gynaecolgy, Universitätsklinikum Gießen, Gießen
| | - B Richter
- Department of Gynaecology and Obstetrics, Elblandkliniken Meißen-Radebeul GmbH & Co. KG, Radebeul
| | - F Kommoss
- Institute of Pathology, Referenzzentrum für Gynäkopathologie, Mannheim
| | - S Hauptmann
- Department of Gynaecolgy and Obstetrics, Universitätsklinikum Halle/S., Halle/S; Institute of Pathology, Trier-Dueren-Duesseldorf, Dueren
| | - A du Bois
- Department of Gynaecolgy and Gynaecolgic Oncology, Kliniken Essen-Mitte, Essen, Germany
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Hendershot JM, Mishra UJ, Smart RP, Schroeder W, Powers RA. Structure-based efforts to optimize a non-β-lactam inhibitor of AmpC β-lactamase. Bioorg Med Chem 2014; 22:3351-9. [PMID: 24835785 DOI: 10.1016/j.bmc.2014.04.051] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 04/16/2014] [Accepted: 04/25/2014] [Indexed: 11/26/2022]
Abstract
β-Lactams are the most widely prescribed class of antibiotics, yet their efficacy is threatened by expression of β-lactamase enzymes, which hydrolyze the defining lactam ring of these antibiotics. To overcome resistance due to β-lactamases, inhibitors that do not resemble β-lactams are needed. A novel, non-β-lactam inhibitor for the class C β-lactamase AmpC (3-[(4-chloroanilino)sulfonyl]thiophene-2-carboxylic acid; Ki 26μM) was previously identified. Based on this lead, a series of compounds with the potential to interact with residues at the edge of the active site were synthesized and tested for inhibition of AmpC. The length of the carbon chain spacer was extended by 1, 2, 3, and 4 carbons between the integral thiophene ring and the benzene ring (compounds 4, 5, 6, and 7). Compounds 4 and 6 showed minimal improvement over the lead compound (Ki 18 and 19μM, respectively), and compound 5 inhibited to the same extent as the lead. The X-ray crystal structures of AmpC in complexes with compounds 4, 5, and 6 were determined. The complexes provide insight into the structural reasons for the observed inhibition, and inform future optimization efforts in this series.
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Affiliation(s)
- Jenna M Hendershot
- Cell and Molecular Biology Program, Grand Valley State University, Allendale, MI 49401, United States
| | - Uma J Mishra
- Department of Chemistry, Grand Valley State University, Allendale, MI 49401, United States
| | - Robert P Smart
- Department of Chemistry, Grand Valley State University, Allendale, MI 49401, United States
| | - William Schroeder
- Department of Chemistry, Grand Valley State University, Allendale, MI 49401, United States
| | - Rachel A Powers
- Cell and Molecular Biology Program, Grand Valley State University, Allendale, MI 49401, United States; Department of Chemistry, Grand Valley State University, Allendale, MI 49401, United States.
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18
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Pluhařová E, Ončák M, Seidel R, Schroeder C, Schroeder W, Winter B, Bradforth SE, Jungwirth P, Slavíček P. Transforming Anion Instability into Stability: Contrasting Photoionization of Three Protonation Forms of the Phosphate Ion upon Moving into Water. J Phys Chem B 2012; 116:13254-64. [DOI: 10.1021/jp306348b] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Eva Pluhařová
- Institute
of Organic Chemistry
and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610 Prague 6, Czech Republic
- Department of Physical Chemistry, Institute of Chemical Technology, Technická
5, 16628 Prague 6, Czech Republic
| | - Milan Ončák
- Department of Physical Chemistry, Institute of Chemical Technology, Technická
5, 16628 Prague 6, Czech Republic
| | - Robert Seidel
- Helmholtz-Zentrum Berlin für Materialien und Energie, and BESSY, Albert-Einstein-Strasse 15, D-12489 Berlin, Germany
- Department of Chemistry, University of Southern California, Los Angeles, California
90089-0482, United States
| | - Christi Schroeder
- Department of Chemistry, University of Southern California, Los Angeles, California
90089-0482, United States
| | - William Schroeder
- Department of Chemistry, University of Southern California, Los Angeles, California
90089-0482, United States
| | - Bernd Winter
- Helmholtz-Zentrum Berlin für Materialien und Energie, and BESSY, Albert-Einstein-Strasse 15, D-12489 Berlin, Germany
| | - Stephen E. Bradforth
- Department of Chemistry, University of Southern California, Los Angeles, California
90089-0482, United States
| | - Pavel Jungwirth
- Institute
of Organic Chemistry
and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610 Prague 6, Czech Republic
| | - Petr Slavíček
- Department of Physical Chemistry, Institute of Chemical Technology, Technická
5, 16628 Prague 6, Czech Republic
- J. Heyrovský Institute of Physical Chemistry, Dolejškova 3,
18223 Prague 8, Czech Republic
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20
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Carpenter TC, Schroeder W, Stenmark KR, Schmidt EP. Eph-A2 promotes permeability and inflammatory responses to bleomycin-induced lung injury. Am J Respir Cell Mol Biol 2012; 46:40-7. [PMID: 21799118 DOI: 10.1165/rcmb.2011-0044oc] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Stimulation by the ephrin-A1 ligand of the EphA2 receptor increases endothelial permeability. Lung injury increases the expression of EphA2, but the role of EphA2 in such injury is not well understood. To determine whether EphA2 contributes to changes in permeability and inflammation in the injured lung, we studied wild-type (WT) and EphA2 knockout (KO) mice, using isolated, perfused lung (IPL) preparations and a model of bleomycin-induced lung injury. We also studied the response of endothelial cells to ephrin-A1. In the IPL preparations, ephrin-A1 increased the filtration coefficient in WT mice, but not in EphA2 KO mice, demonstrating that EphA2 regulates vascular permeability. In early bleomycin injury in WT mice, the expression of both EphA2 and ephrin-A1 increased. EphA2 KO animals were protected from lung injury, showing less water and alveolar protein in the lungs than WT mice, consistent with reduced permeability. Bleomycin caused less accumulation of lung leukocytes in EphA2 KO animals than in WT animals, suggesting that EphA2 regulates inflammation. To determine whether EphA2 deficiency alters the production of chemokines, CXCL1 and CCL2 in the lungs were measured. After bleomycin injury, EphA2 KO animals produced less CXCL1 and CCL2 than WT animals. Because NF-κβ mediates the production of chemokines, the effect of the ephrin-A1 ligand on the activation of NF-κβ and the expression of chemokines was measured in endothelial cells. Ephrin-a1 significantly increased NF-κβ nuclear translocation and the expression of chemokine mRNA. This study demonstrates that the expression of EphA2 increases in the injured lung, and not only contributes to changes in permeability, but also plays a previously unrecognized role in promoting inflammatory responses.
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Affiliation(s)
- Todd C Carpenter
- Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Colorado School of Medicine, Aurora, 80045, USA.
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Raj S, Bräutigam K, Hamanishi ET, Wilkins O, Thomas BR, Schroeder W, Mansfield SD, Plant AL, Campbell MM. Clone history shapes Populus drought responses. Proc Natl Acad Sci U S A 2011; 108:12521-6. [PMID: 21746919 PMCID: PMC3145742 DOI: 10.1073/pnas.1103341108] [Citation(s) in RCA: 124] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Just as animal monozygotic twins can experience different environmental conditions by being reared apart, individual genetically identical trees of the genus Populus can also be exposed to contrasting environmental conditions by being grown in different locations. As such, clonally propagated Populus trees provide an opportunity to interrogate the impact of individual environmental history on current response to environmental stimuli. To test the hypothesis that current responses to an environmental stimulus, drought, are contingent on environmental history, the transcriptome- level drought responses of three economically important hybrid genotypes-DN34 (Populus deltoides × Populus nigra), Walker [P. deltoides var. occidentalis × (Populus laurifolia × P. nigra)], and Okanese [Walker × (P. laurifolia × P. nigra)]-derived from two different locations were compared. Strikingly, differences in transcript abundance patterns in response to drought were based on differences in geographic origin of clones for two of the three genotypes. This observation was most pronounced for the genotypes with the longest time since establishment and last common propagation. Differences in genome-wide DNA methylation paralleled the transcriptome level trends, whereby the clones with the most divergent transcriptomes and clone history had the most marked differences in the extent of total DNA methylation, suggesting an epigenomic basis for the clone history-dependent transcriptome divergence. The data provide insights into the interplay between genotype and environment in the ecologically and economically important Populus genus, with implications for the industrial application of Populus trees and the evolution and persistence of these important tree species and their associated hybrids.
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Affiliation(s)
- Sherosha Raj
- Department of Cell & Systems Biology
- Centre for the Analysis of Genome Evolution & Function, and
| | - Katharina Bräutigam
- Department of Cell & Systems Biology
- Centre for the Analysis of Genome Evolution & Function, and
| | - Erin T. Hamanishi
- Centre for the Analysis of Genome Evolution & Function, and
- Faculty of Forestry, University of Toronto, Toronto, ON, Canada M5S 3B2
| | - Olivia Wilkins
- Department of Cell & Systems Biology
- Centre for the Analysis of Genome Evolution & Function, and
| | - Barb R. Thomas
- Alberta-Pacific Forest Industries, Boyle, AB, Canada T0A 0M0
- Department of Renewable Resources, University of Alberta, Edmonton, AB, Canada T6G 2H1
| | - William Schroeder
- Agroforestry Development Centre, Agriculture and Agri-Food Canada, Indian Head, SK, Canada S0G 2K0
| | - Shawn D. Mansfield
- Department of Wood Science, University of British Columbia, Vancouver, BC, Canada V6T 1Z4
| | - Aine L. Plant
- Department of Biological Sciences, Simon Fraser University, Burnaby, BC V5A 1S6, Canada; and
| | - Malcolm M. Campbell
- Department of Cell & Systems Biology
- Centre for the Analysis of Genome Evolution & Function, and
- Department of Biological Sciences, University of Toronto Scarborough, Toronto, ON, Canada M1C 1A4
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22
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Abstract
Very few mutations of the gene encoding for coagulation factor X (FX) have been found associated with intracranial haemorrhage (ICH) due to FX deficiency (FXD). No guidelines exist as to when prophylaxis in FXD should be started and how patients at risk for ICH can be identified. We report on a novel mutation causative for ICH in a family of Iranian origin and provide a summary of all published mutations in the FX gene related to ICH. The index patient is an infant with umbilical bleeding requiring blood transfusion in the postnatal period. The international normalized ratio (6.01) and activated partial thromboplastin time (117 s) were prolonged. Coagulation factor analysis was normal except for FX activity (<1%). At 4 months, the child suffered a spontaneous severe intracranial haemorrhage. The child was the product of a consanguineous union. Four of five available family members from three generations displayed minor bleeding symptoms and mildly reduced FX. Sequencing of FX gene demonstrated homozygosity for a novel duplication A (c.1402_1403dupA)* in exon 8 and heterozygosity in four family members. We compare this case to all 15 patients with FXD and ICH and their 11 known mutations described so far. This case illustrates a pattern of FXD (a male neonate with umbilical or gastrointestinal bleeding, very low FX:C (<1%) and an underlying homozygous genotype) who may be at high risk for ICH. In these cases, we recommend to start early prophylactic substitution of FX to prevent a possible life-threatening haemorrhage.
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Affiliation(s)
- R Rauch
- Department of Paediatrics, University of Western ON, London, Ontario, Canada.
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23
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Adlarson P, Adolph C, Augustyniak W, Baru V, Bashkanov M, Bednarski T, Bergmann FS, Berłowski M, Bhatt H, Brinkmann KT, Büscher M, Calén H, Clement H, Coderre D, Czerwiński E, Doroshkevich E, Ekström C, Engels R, Erven W, Eyrich W, Fedorets P, Föhl K, Fransson K, Goldenbaum F, Goslawski P, Grigoryev K, Grishina V, Gullström CO, Hampe J, Hanhart C, Heijkenskjöld L, Hejny V, Hinterberger F, Hodana M, Höistad B, Jacewicz M, Janusz M, Jany A, Jany BR, Jarczyk L, Johansson T, Kamys B, Kemmerling G, Khakimova O, Khoukaz A, Kistryn S, Klaja J, Kleines H, Kłos B, Kren F, Krzemień W, Kulessa P, Kullander S, Kupść A, Lalwani K, Lorentz B, Magiera A, Maier R, Marciniewski P, Mariański B, Mikirtychiants M, Moskal P, Morsch HP, Nandi BK, Niedźwiecki S, Ohm H, Passfeld A, Pauly C, del Rio EP, Petukhov Y, Piskunov N, Pluciński P, Podkopał P, Povtoreyko A, Prasuhn D, Pricking A, Pysz K, Rausmann T, Redmer CF, Ritman J, Roy A, Ruber RJMY, Rudy Z, Sawant S, Schadmand S, Schmidt A, Schroeder W, Sefzick T, Serdyuk V, Shah N, Siemaszko M, Siudak R, Skorodko T, Skurzok M, Smyrski J, Sopov V, Stassen R, Stepaniak J, Sterzenbach G, Stockhorst H, Ströher H, Szczurek A, Täschner A, Tolba T, Trzciński A, Varma R, Vlasov P, Wagner GJ, Węglorz W, Winnemöller A, Wirzba A, Wolke M, Wrońska A, Wüstner P, Wurm P, Yuan X, Yurev L, Zabierowski J, Zheng C, Zieliński MJ, Zipper W, Złomańczuk J, Zuprański P. Abashian-Booth-Crowe effect in basic double-pionic fusion: a new resonance? Phys Rev Lett 2011; 106:242302. [PMID: 21770567 DOI: 10.1103/physrevlett.106.242302] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2011] [Indexed: 05/31/2023]
Abstract
We report on an exclusive and kinematically complete high-statistics measurement of the basic double-pionic fusion reaction pn→dπ(0)π(0) over the full energy region of the ABC effect, a pronounced low-mass enhancement in the ππ-invariant mass spectrum. The measurements, which cover also the transition region to the conventional t-channel ΔΔ process, were performed with the upgraded WASA detector setup at COSY. The data reveal the Abashian-Booth-Crowe effect to be uniquely correlated with a Lorentzian energy dependence in the integral cross section. The observables are consistent with a narrow resonance with m=2.37 GeV, Γ≈70 MeV and I(J(P))=0(3(+)) in both pn and ΔΔ systems. Necessary further tests of the resonance interpretation are discussed.
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Affiliation(s)
- P Adlarson
- Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
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24
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Harter P, Canzler U, Lueck H, Reuss A, Meier W, Fehm TN, Staehle A, Burges A, Kurzeder C, Sehouli J, Baumann KH, Hanker LC, Wimberger P, Schroeder W, Gropp M, Mahner S, Du Bois A. Pegylated liposomal doxorubicin and carboplatin in malignant mixed epithelial mesenchymal and mesenchymal gynecologic tumors: A phase II trial of the AGO study group. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.5093] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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25
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Schroeder W, Harter P, Reuss A, Cormio G, Bois AD. O831 Predictive factors for resection in recurrent ovarian cancer (ROC). Intergroup study of AGO Kommission OVAR, AGO-OVAR, AGO Austria, MITO and NOGGO. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)61204-2] [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: 10/20/2022]
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Cercone MA, Schroeder W, Schomberg S, Carpenter TC. EphA2 receptor mediates increased vascular permeability in lung injury due to viral infection and hypoxia. Am J Physiol Lung Cell Mol Physiol 2009; 297:L856-63. [PMID: 19684201 DOI: 10.1152/ajplung.00118.2009] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Ephrin family receptor tyrosine kinases are mediators of angiogenesis that may also regulate endothelial barrier function in the lung. Previous work has demonstrated that stimulation of EphA ephrin receptors causes increased vascular leak in the intact lung and increased permeability in cultured endothelial cells. Whether EphA receptors are involved in the permeability changes associated with lung injury is unknown. We studied this question in young rats exposed to viral respiratory infection combined with exposure to moderate hypoxia, a previously described lung injury model. We found that the EphA2 receptor is expressed in normal lung and that EphA2 expression is markedly upregulated in the lungs of hypoxic infected (HV) rats compared with normal control animals. Immunohistochemistry showed increased EphA2 expression principally in areas of edematous alveolar septae. In HV rats, EphA2 antagonism with either the soluble decoy receptor EphA2/Fc or with monoclonal anti-EphA2 antibody reduced albumin extravasation and histological evidence of edema formation (P<0.01). Vascular leak in HV rats is mediated in large part by increased lung endothelin (ET) levels. In HV rats, ET receptor antagonism with bosentan resulted in reduced EphA2 mRNA and protein expression (P<0.01). Experiments with cultured rat lung microvascular endothelial cells demonstrated that ET increases endothelial EphA2 expression. These results suggest that EphA2 expression is increased in lung injury, contributes to vascular leak in the injured lung, and is regulated in endothelial cells by ET. EphA2 may be a previously unrecognized contributor to the pathophysiology of lung injury.
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Affiliation(s)
- Melissa A Cercone
- Developmental Lung Biology Laboratory, Box B-131, Department of Pediatrics, University of Colorado School of Medicine, 12700 East 19th Ave., Aurora, CO 80045, USA
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27
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Harter P, Hahmann M, Lueck HJ, Poelcher M, Wimberger P, Ortmann O, Canzler U, Richter B, Wagner U, Hasenburg A, Burges A, Loibl S, Meier W, Huober J, Fink D, Schroeder W, Muenstedt K, Schmalfeldt B, Emons G, du Bois A. Surgery for recurrent ovarian cancer: role of peritoneal carcinomatosis: exploratory analysis of the DESKTOP I Trial about risk factors, surgical implications, and prognostic value of peritoneal carcinomatosis. Ann Surg Oncol 2009; 16:1324-30. [PMID: 19225844 DOI: 10.1245/s10434-009-0357-0] [Citation(s) in RCA: 107] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2008] [Revised: 01/17/2009] [Accepted: 01/17/2009] [Indexed: 11/18/2022]
Abstract
BACKGROUND Almost all retrospective trials pointed out that a benefit of surgery for recurrent ovarian cancer may be limited to patients in whom a macroscopic complete resection could be achieved. Peritoneal carcinomatosis has been reported to be either a negative predictor for resectability or a negative prognostic factor, or both. The role of peritoneal carcinomatosis in a multicenter trial was investigated. METHODS Exploratory analysis of the DESKTOP I trial (multicenter trial of patients undergoing surgery for recurrent ovarian cancer, 2000 to 2003). RESULTS A total of 125 patients (50%) who underwent surgery for recurrent ovarian cancer had peritoneal carcinomatosis. Univariate analyses showed worse overall survival for patients with peritoneal carcinomatosis compared with patients without carcinomatosis (P < .0001). Patients with and without peritoneal carcinomatosis had a complete resection rate of 26% and 74%, respectively (P < .0001). This corresponded with the observation that patients with complete resection had a better prognosis than those with minimal residual disease of 1 to 5 mm, which commonly reflects peritoneal carcinomatosis (P = .0002). However, patients who underwent complete resection, despite peritoneal carcinomatosis, had a 2-year survival rate of 77%, which was similar to the 2-year survival rate of patients with completely debulked disease who did not have peritoneal carcinomatosis (81%) (P = .96). Analysis of prognostic factors did not show any independent effect of peritoneal carcinomatosis on survival in patients who underwent complete resection. CONCLUSIONS Peritoneal carcinomatosis was a negative predictor for complete resection but had no effect on prognosis if complete resection could be achieved. Improving surgical skills might be one step to increase the proportion of patients who might benefit from surgery for recurrent disease.
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Affiliation(s)
- P Harter
- Department of Gynecology and Gynecologic Oncology, HSK, Dr Horst Schmidt Klinik, Wiesbaden, Germany.
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Larson J, Schomberg S, Schroeder W, Carpenter TC. Endothelial EphA receptor stimulation increases lung vascular permeability. Am J Physiol Lung Cell Mol Physiol 2008; 295:L431-9. [PMID: 18599503 DOI: 10.1152/ajplung.90256.2008] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Mediators of angiogenesis such as VEGFs and angiopoietins may regulate pulmonary vascular permeability under normal and pathological conditions. Ephrin family receptor tyrosine kinases are expressed in the vasculature and also regulate angiogenesis under some circumstances, but whether they also modulate lung vascular permeability is unknown. We hypothesized that stimulation of lung endothelial EphA receptors with ephrin-a1 ligand would alter pulmonary vascular permeability and tested this idea in vivo and in vitro. We found that ephrin-a1 ligand and EphA2 receptors are expressed in distal normal lung vasculature and that their expression is increased in injured lung, suggesting a link to mechanisms of increased permeability. Intravenous injection of ephrin-a1 caused a large increase in the leakage of labeled albumin into the lungs of rats within 30 min (293 +/- 27 vs. 150 +/- 6 ng/mg dry lung, P < 0.01), along with histological evidence of the formation of endothelial disruptions. In cultured lung vascular endothelial cells, stimulation with ephrin-a1 increased monolayer permeability by 44% (P < 0.01), a permeability change similar to that seen with VEGF stimulation of the same cells. Ephrin-a1 stimulation in vivo and in vitro was associated with histological evidence for disruptions of tight and adherens junctions. These observations describe a novel role for ephrin-a1 and EphA receptors in the regulation of vascular permeability in the lung.
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Affiliation(s)
- Jacqueline Larson
- Developmental Lung Biology Laboratory, Box B-131, Univ. of Colorado School of Medicine, 4200 East 9th Ave., Denver, CO 80262, USA
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29
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Tomlinson JM, Mishra UJ, Kubiak RL, Schroeder W, Davis CJ, Smart RP, Powers RA. Synthesis and Structural Analysis of a Novel Series of Non‐beta‐lactam Inhibitors of AmpC Beta‐lactamase. FASEB J 2008. [DOI: 10.1096/fasebj.22.1_supplement.792.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Uma J Mishra
- ChemistryGrand Valley State UniversityAllendaleMI
| | | | | | | | | | - Rachel A Powers
- Cell and Molecular Biology
- ChemistryGrand Valley State UniversityAllendaleMI
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30
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Kutschan A, Schroeder B, Schroeder W. [Is bimedial muscle belting an alternative procedure to retro-equatorial myopexy in convergence excess esotropia?]. Ophthalmologe 2007; 104:582-7. [PMID: 17579867 DOI: 10.1007/s00347-007-1540-y] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
OBJECTIVE Retro-equatorial myopexy is a standard procedure to reduce convergence excess esotropia and esotropia with variable deviations. However, the surgical effect of the faden operation can be accompanied by restricted eye motility in side-gaze. Revision of the operated muscle is often difficult due to scarring of the muscle and adhesions with the sclera. Bimedial muscle belting is an alternative procedure that tries to reduce these side effects. METHODS The surgical technique, which consists of bridging the medial rectus with a silicon band sutured to the sclera, has been demonstrated previously. Results after bimedial muscle belting were analyzed in 33 patients retrospectively after 6 weeks and 37 months, and compared with the results after the faden operation. RESULTS Angles at distance were reduced 6 weeks postoperatively by a median value of 6.0 degrees and for near by a median of 10.5 degrees , which is very similar to the effect seen after the faden operation. After 37 months, results remained stable with a reduction of a median of 6.0 degrees at distance and 10.0 degrees for near. Significant incomitance in side-gaze was only rarely noted after muscle belting (maximum 5 degrees ), whereas it was seen frequently after the faden operation, 4.0 degrees -6.6 degrees (maximum 9 degrees ). CONCLUSIONS Bimedial rectus belting is an alternative procedure to the faden operation, yielding similar results. Surgically, the procedure is more demanding, as the fixating sutures have to be passed through the sclera twice on either side. However, the integrity of the muscle is maintained and major adhesions with the sclera do not develop. Thus, the muscle can be subjected to recess or resect surgery without touching the anchoring of the belt in the sclera. In addition, revision surgery can be carried out easily with the belt left in place.
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Affiliation(s)
- A Kutschan
- Asklepios Klinik Nord Heidberg, Tangstedter Landstrasse 400, 22417 Hamburg, Deutschland.
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31
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Rudlowski C, Pickart AK, Fuhljahn C, Friepoertner T, Schlehe B, Biesterfeld S, Schroeder W. Prognostic significance of vascular endothelial growth factor expression in ovarian cancer patients: a long-term follow-up. Int J Gynecol Cancer 2006; 16 Suppl 1:183-9. [PMID: 16515588 DOI: 10.1111/j.1525-1438.2006.00307.x] [Citation(s) in RCA: 58] [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: 01/03/2023] Open
Abstract
The purpose of the study was to determine vascular endothelial growth factor (VEGF) concentrations in ascites from ovarian cancer and to correlate these data with VEGF expression in ovarian tumors, serum VEGF concentrations, and clinicopathologic characteristics. Ascites, serum, and tumor tissue from 65 ovarian carcinomas and eight borderline tumors were collected. VEGF concentration in peritoneal fluids and sera was determined using enzyme immunoassay. VEGF tumor expression was evaluated immunohistochemically. Significantly higher VEGF concentrations were found in ascites from malignant tumors (median, 2575 pg mL(-1)) compared with borderline tumors (median 181.9 pg mL(-1)) and benign peritoneal fluid (184.5 pg mL(-1)). Both VEGF ascites concentration and tumor expression correlated with advanced tumor stages and ascites volume. Elevated VEGF ascites levels were negatively correlated to patient survival. No differences between VEGF serum levels could be observed between ovarian cancer patients and patients with benign cysts. This study showed for the first time the clinical significance of elevated VEGF ascites level in ovarian carcinomas. VEGF is expressed by ovarian tumor cells and locally released in the malignant peritoneal fluid but is not increased in the serum of preoperative ovarian cancer patients. The enhanced VEGF level support novel therapeutic perspectives by VEGF inhibition.
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Affiliation(s)
- C Rudlowski
- Department of Gynecology and Obstetrics, University Hospital, Bonn, Bonn, Germany.
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Rudlowski C, Pickart AK, Fuhljahn C, Friepoertner T, Schlehe B, Biesterfeld S, Schroeder W. Prognostic significance of vascular endothelial growth factor expression in ovarian cancer patients: a long-term follow-up. Int J Gynecol Cancer 2006. [DOI: 10.1136/ijgc-00009577-200602001-00029] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
The purpose of the study was to determine vascular endothelial growth factor (VEGF) concentrations in ascites from ovarian cancer and to correlate these data with VEGF expression in ovarian tumors, serum VEGF concentrations, and clinicopathologic characteristics. Ascites, serum, and tumor tissue from 65 ovarian carcinomas and eight borderline tumors were collected. VEGF concentration in peritoneal fluids and sera was determined using enzyme immunoassay. VEGF tumor expression was evaluated immunohistochemically. Significantly higher VEGF concentrations were found in ascites from malignant tumors (median, 2575 pg mL−1) compared with borderline tumors (median 181.9 pg mL−1) and benign peritoneal fluid (184.5 pg mL−1). Both VEGF ascites concentration and tumor expression correlated with advanced tumor stages and ascites volume. Elevated VEGF ascites levels were negatively correlated to patient survival. No differences between VEGF serum levels could be observed between ovarian cancer patients and patients with benign cysts. This study showed for the first time the clinical significance of elevated VEGF ascites level in ovarian carcinomas. VEGF is expressed by ovarian tumor cells and locally released in the malignant peritoneal fluid but is not increased in the serum of preoperative ovarian cancer patients. The enhanced VEGF level support novel therapeutic perspectives by VEGF inhibition.
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Brötz-Oesterhelt H, Beyer D, Kroll HP, Endermann R, Ladel C, Schroeder W, Hinzen B, Raddatz S, Paulsen H, Henninger K, Bandow JE, Sahl HG, Labischinski H. Erratum: Corrigendum: Dysregulation of bacterial proteolytic machinery by a new class of antibiotics. Nat Med 2005. [DOI: 10.1038/nm1205-1361a] [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: 11/09/2022]
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Steffen A, Schroeder W, Macdonald R, Poissant L, Konoplev A. Mercury in the Arctic atmosphere: an analysis of eight years of measurements of GEM at Alert (Canada) and a comparison with observations at Amderma (Russia) and Kuujjuarapik (Canada). Sci Total Environ 2005; 342:185-98. [PMID: 15866275 DOI: 10.1016/j.scitotenv.2004.12.048] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Eight years of gaseous elemental mercury (GEM) concentration measurements from Alert, Nunavut, Canada (between 1995 and 2002) is presented. The annual time series shows a distinct repeating seasonal pattern with an overall annual median concentration for this time period of 1.58 (S.D.=0.04 ng m(-3)). Strong seasonal variation was observed throughout the years with springtime displaying strong variability in the GEM and overall lower median concentrations due to the so-called mercury depletion events (MDEs). Summer concentrations are higher than the annual average and show a decrease in variability. Fall and winter concentrations are distributed around the annual median concentrations and show little variability. The relationship between the springtime depression and the summer increase shows a change in the behaviour of mercury between 1995 and 2002. Preliminary results suggest that during this period an increasing amount of the mercury lost from the atmosphere in the spring is not returned to atmosphere in summer. A comparison of GEM concentration data from three sites--Alert (Canada), Amderma (Russia) and Kuujjuarapik (Canada)--demonstrated similar monthly distribution of GEM between Alert and Amderma, with the latter not showing as high summer concentrations. Monthly distribution of GEM at Kuujjuarapik varied considerably from the other two sites. MDEs were found to occur at each site in the spring yet displayed different characteristics. MDEs appear to start at Alert shortly after polar sunrise but in Amderma their initiation is delayed approximately 2 months following polar sunrise. MDEs occur in Kuujjuarapik in the springtime despite an incomplete development of the polar day-night cycle. In spring, as soon as air temperature attained temperatures consistently above 0 degrees C, MDEs ended immediately at all three sites. Continued studies into MDEs are warranted, but clearly an important component of future studies must focus on the origins of the variation of GEM behaviour at different sites.
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Affiliation(s)
- Alexandra Steffen
- Meteorological Service of Canada, 4905 Dufferin Street, Toronto, Ontario, Canada M3H 5T4.
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du Bois A, Belau A, Wagner U, Pfisterer J, Schmalfeldt B, Richter B, Staehle A, Jackisch C, Lueck HJ, Schroeder W, Burges A, Olbricht S, Elser G. A phase II study of paclitaxel, carboplatin, and gemcitabine in previously untreated patients with epithelial ovarian cancer FIGO stage IC-IV (AGO-OVAR protocol OVAR-8). Gynecol Oncol 2005; 96:444-51. [PMID: 15661234 DOI: 10.1016/j.ygyno.2004.10.020] [Citation(s) in RCA: 18] [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] [Received: 05/08/2004] [Indexed: 10/26/2022]
Abstract
PURPOSE A multicenter, nonrandomized, phase II study was initiated to evaluate the tolerability, toxicity, and activity of paclitaxel, carboplatin, and gemcitabine combination in previously untreated ovarian cancer. PATIENTS AND METHODS Chemonaive patients who had radical debulking surgery for primary epithelial ovarian cancer International Federation of Gynecology and Obstetrics (FIGO) IC-IV received sequentially paclitaxel 175 mg/m(2), carboplatin AUC 5, and gemcitabine 800 mg/m(2) on day 1 and gemcitabine 800 mg/m(2) on day 8, every 3 weeks. RESULTS From October 2001 to July 2002, 55 patients were treated and evaluated. Main toxicities were hematological with NCI-CTC grade 3/4 anemia 12.7%, leukopenia 70.9%, neutropenia 76.3%, and thrombocytopenia 45.5. However, febrile neutropenia occurred only in 1.8%. Grade 3/4 nonhematological toxicities were rare and occurred in less than 10% of patients. Toxicity-induced treatment delays occurred in 3.1% of cycles and resulted in early treatment cessation in four patients. Dose intensity reached 90.8% for carboplatin and paclitaxel, and 73.3% for gemcitabine. Objective response was observed in 10 of 14 patients with measurable disease. CONCLUSIONS The triplet combination of paclitaxel-carboplatin-gemcitabine is feasible and active, with manageable hematological toxicity and no unexpected nonhematological toxicity. This regimen has proceeded to phase III evaluation.
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Affiliation(s)
- A du Bois
- Department of Gynecology and Gynecologic Oncology, and AGO Study Secretary, Dr. Horst Schmidt Klinik Wiesbaden (HSK), Ludwig-Erhard-Str. 100, D-65199 Wiesbaden, Germany.
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Moenig SP, Luebke T, Baldus SE, Schroeder W, Bollschweiler E, Schneider PM, Hoelscher AH. Feasibility of sentinel node concept in gastric carcinoma: clinicopathological analysis of gastric cancer with solitary lymph node metastases. Anticancer Res 2005; 25:1349-52. [PMID: 15865090] [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: 05/02/2023]
Abstract
BACKGROUND The feasibility and diagnostic reliability of sentinel lymph node biopsy of gastric carcinoma are still unclear and controversial. PATIENTS AND METHODS To assess the applicability of the sentinel node concept to gastric carcinoma, we retrospectively analyzed the location of metastatic lymph nodes in patients with only one or two lymph node metastases. RESULTS A total of 135 patients, who underwent gastrectomy with D2 lymphadenectomy for primary gastric adenocarcinoma between 1997 and 2001, were enrolled in this study. An average of 39 lymph nodes were resected and analyzed for each patient. Of the 135 patients, 88 (65%) were subtyped as pN+ (with lymph node metastasis); of the latter, 15 cases (pT1-3; 17% of N+ cases) showed one or two lymph node metastases. In 14 (93%) of these patients, lymph nodes directly adjacent to the primary tumor were involved. Skip metastases were only seen in one patient with cardia carcinoma and lymph node involvement of compartment II (left gastric artery). CONCLUSION In patients with gastric carcinoma, especially in early stage carcinoma, the phenomenon of skip metastasis is infrequent. Therefore, the sentinel node concept may be feasible in gastric cancer.
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Affiliation(s)
- S P Moenig
- Department of Visceral and Vascular Surgery, University of Cologne, Joseph-Stelzmann-Strasse 9, 50924 Cologne, Germany.
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du Bois A, Combe M, Rochon J, Jackisch C, Malaurie E, Lueck HJ, Loibl S, Schroeder W, Burges A, Weber B. Epirubicin/paclitaxel/carboplatin (TEC) vs paclitaxel/carboplatin (TC) in first-line treatment of ovarian cancer (OC) FIGO stages IIB–IV. An AGO-GINECO Intergroup phase III trial. J Clin Oncol 2004. [DOI: 10.1200/jco.2004.22.90140.5007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [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)
- A. du Bois
- Dpt. Gyn & Gyn Oncol, HSK, Wiesbaden, Germany; GINECO, Study Group, France; AGO, Ovarian Cancer Study Group, Germany; University Hospital Dep. Obst. and Gynaecology, Frankfurt am Main, Germany; Klinikum Bremen-Mitte gGmbH, Dep. of Gynaecology, Bremen, Germany; Dpt OB/GYN Ludwig-Maximilians University, Munich, Germany
| | - M. Combe
- Dpt. Gyn & Gyn Oncol, HSK, Wiesbaden, Germany; GINECO, Study Group, France; AGO, Ovarian Cancer Study Group, Germany; University Hospital Dep. Obst. and Gynaecology, Frankfurt am Main, Germany; Klinikum Bremen-Mitte gGmbH, Dep. of Gynaecology, Bremen, Germany; Dpt OB/GYN Ludwig-Maximilians University, Munich, Germany
| | - J. Rochon
- Dpt. Gyn & Gyn Oncol, HSK, Wiesbaden, Germany; GINECO, Study Group, France; AGO, Ovarian Cancer Study Group, Germany; University Hospital Dep. Obst. and Gynaecology, Frankfurt am Main, Germany; Klinikum Bremen-Mitte gGmbH, Dep. of Gynaecology, Bremen, Germany; Dpt OB/GYN Ludwig-Maximilians University, Munich, Germany
| | - C. Jackisch
- Dpt. Gyn & Gyn Oncol, HSK, Wiesbaden, Germany; GINECO, Study Group, France; AGO, Ovarian Cancer Study Group, Germany; University Hospital Dep. Obst. and Gynaecology, Frankfurt am Main, Germany; Klinikum Bremen-Mitte gGmbH, Dep. of Gynaecology, Bremen, Germany; Dpt OB/GYN Ludwig-Maximilians University, Munich, Germany
| | - E. Malaurie
- Dpt. Gyn & Gyn Oncol, HSK, Wiesbaden, Germany; GINECO, Study Group, France; AGO, Ovarian Cancer Study Group, Germany; University Hospital Dep. Obst. and Gynaecology, Frankfurt am Main, Germany; Klinikum Bremen-Mitte gGmbH, Dep. of Gynaecology, Bremen, Germany; Dpt OB/GYN Ludwig-Maximilians University, Munich, Germany
| | - H. J. Lueck
- Dpt. Gyn & Gyn Oncol, HSK, Wiesbaden, Germany; GINECO, Study Group, France; AGO, Ovarian Cancer Study Group, Germany; University Hospital Dep. Obst. and Gynaecology, Frankfurt am Main, Germany; Klinikum Bremen-Mitte gGmbH, Dep. of Gynaecology, Bremen, Germany; Dpt OB/GYN Ludwig-Maximilians University, Munich, Germany
| | - S. Loibl
- Dpt. Gyn & Gyn Oncol, HSK, Wiesbaden, Germany; GINECO, Study Group, France; AGO, Ovarian Cancer Study Group, Germany; University Hospital Dep. Obst. and Gynaecology, Frankfurt am Main, Germany; Klinikum Bremen-Mitte gGmbH, Dep. of Gynaecology, Bremen, Germany; Dpt OB/GYN Ludwig-Maximilians University, Munich, Germany
| | - W. Schroeder
- Dpt. Gyn & Gyn Oncol, HSK, Wiesbaden, Germany; GINECO, Study Group, France; AGO, Ovarian Cancer Study Group, Germany; University Hospital Dep. Obst. and Gynaecology, Frankfurt am Main, Germany; Klinikum Bremen-Mitte gGmbH, Dep. of Gynaecology, Bremen, Germany; Dpt OB/GYN Ludwig-Maximilians University, Munich, Germany
| | - A. Burges
- Dpt. Gyn & Gyn Oncol, HSK, Wiesbaden, Germany; GINECO, Study Group, France; AGO, Ovarian Cancer Study Group, Germany; University Hospital Dep. Obst. and Gynaecology, Frankfurt am Main, Germany; Klinikum Bremen-Mitte gGmbH, Dep. of Gynaecology, Bremen, Germany; Dpt OB/GYN Ludwig-Maximilians University, Munich, Germany
| | - B. Weber
- Dpt. Gyn & Gyn Oncol, HSK, Wiesbaden, Germany; GINECO, Study Group, France; AGO, Ovarian Cancer Study Group, Germany; University Hospital Dep. Obst. and Gynaecology, Frankfurt am Main, Germany; Klinikum Bremen-Mitte gGmbH, Dep. of Gynaecology, Bremen, Germany; Dpt OB/GYN Ludwig-Maximilians University, Munich, Germany
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Abstract
Overhunting of red deer (Cervus elaphus) in eastern Switzerland led to its extinction in the second half of the 17th century. Natural recolonization must have taken place later, because red deer were seen again in the canton of the Grisons (eastern Switzerland) in the 1870s. According to historical data, three different populations could have served as the source population. To determine the genetic origin of the eastern Swiss red deer population, we collected samples from five different subpopulations in the canton of the Grisons as well as from four adjacent populations in Germany, Liechtenstein, Austria, and Italy. We analyzed the samples by genotyping 18 microsatellite loci. F(ST) values, assignment tests, correspondence analysis, and fuzzy clustering clearly pointed to Liechtenstein as the most probable source population for the red deer in eastern Switzerland. In addition, our analyses revealed high gene diversity in all examined populations. Gene flow and the high genetic admixture are discussed.
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Affiliation(s)
- R Kuehn
- Department for Ecosystem and Landscape, Technical University Munich-Weihenstephan, D-85354 Freising, Germany.
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Rimington N, Schieffer S, Schroeder W, Brickeen B. Thermal lens shaping in Brewster gain media: A high-power, diode-pumped Nd:GdVO(4) laser. Opt Express 2004; 12:1426-1436. [PMID: 19474965 DOI: 10.1364/opex.12.001426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A straightforward method is presented for generating a stigmatic spherical thermal lens in laser-diode-pumped, Brewster-cut solid-state gain media by shaping the aspect ratio of the elliptical pumped region. Demonstration of this laser head design with Nd:GdVO(4) as the gain medium yields a stable, efficient, high-power (>20W) diode-pumped laser at 1063nm. Analysis of the spatial mode characteristics of a 67cm-long symmetric resonator both confirms the radially symmetric nature of the pump-induced thermal lens and indicates that laser resonators incorporating this head design can readily generate a high spatial beam quality (M(2) < 2).
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Helmling S, Moyroud E, Schroeder W, Roehl I, Kleinjung F, Stark S, Bahrenberg G, Gillen C, Klussmann S, Vonhoff S. A new class of Spiegelmers containing 2'-fluoro-nucleotides. Nucleosides Nucleotides Nucleic Acids 2003; 22:1035-8. [PMID: 14565337 DOI: 10.1081/ncn-120022729] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Synthesis of 2'-fluoro-nucleosides from L-arabinose in order to perform the synthesis of 2'-fluoro-Spiegelmers binding to a neuropeptide.
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Benkeser RA, Gosnell RB, Schroeder W. An Alleged Free Radical Reaction in Which Benzene Undergoes Attack More Readily Than Nitrobenzene. J Am Chem Soc 2002. [DOI: 10.1021/ja01566a088] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Benkeser RA, Schroeder W, Thomas OH. Electrical Effects in the Biphenyl and Naphthalene Systems. The Influence of Alkyl Groups Attached to Silicon on Desilylation Reactions. J Am Chem Soc 2002. [DOI: 10.1021/ja01542a063] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Benkeser RA, Schroeder W. Aromatic Substitution by a Highly Selective Radical—Triphenylmethyl. A Case of a Free Radical Reaction in Which Nitrobenzene Is Essentially Unreactive. J Am Chem Soc 2002. [DOI: 10.1021/ja01546a032] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Zimny M, Siggelkow W, Schroeder W, Nowak B, Biemann S, Rath W, Buell U. Reply. Gynecol Oncol 2002. [DOI: 10.1006/gyno.2002.6640] [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: 11/22/2022]
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Meisel P, Krause T, Cascorbi I, Schroeder W, Herrmann F, John U, Kocher T. Gender and smoking-related risk reduction of periodontal disease with variant myeloperoxidase alleles. Genes Immun 2002; 3:102-6. [PMID: 11960308 DOI: 10.1038/sj.gene.6363840] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [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: 10/23/2001] [Revised: 11/27/2001] [Accepted: 11/27/2001] [Indexed: 11/09/2022]
Abstract
Myeloperoxidase (MPO) is an oxidative enzyme expressed in polymorphonuclear leukocytes. It is involved in the defence against periodontal bacteria, and is also able to mediate inflammatory tissue destruction in periodontal disease. A G/A polymorphism in the promoter region of the MPO gene at position -463 has been assumed to exert profound effects on the expression of the enzyme. It is the aim of this study to evaluate whether this polymorphism may influence the risk of periodontal diseases. A total of 3148 subjects were randomly selected from the general population in the SHIP study (Study of Health in Pomerania). Periodontal status, health-related and socio-economic items were assessed. All subjects aged 40-60 years (n = 1103) were included in this study, and 1083 genotyped for the MPO -463 G/A polymorphism by PCR and RFLP methods. The genotype frequencies determined were homozygous wild type G/G 65.9% (95% CI 63.5-68.6), heterozygous A/G 31.4% (28.8-34.4), and homozygous variant A/A 2.7% (2.0-3.8). Only female subjects have a significantly reduced risk of severe periodontal disease when bearing the variant genotypes A/G or A/A. In female subjects the reduction in periodontal risk was significant for non-smokers (OR = 0.48; 95% CI 0.23-0.96); the smoke-related increase in risk was also reduced (OR = 0.50; 95% CI 0.22-1.10). When adjusted for age, smoking, and education the odds ratios were calculated as 0.52 (P = 0.01) and 0.97 (P = 0.90) for female and male subjects, respectively. The results of this study confirm the assumption that the MPO -463A allele variants are protective in the pathogenesis of periodontal diseases. This holds true only with women but not with men. The results are discussed with respect to the known influences of sexual hormones on MPO activity.
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Affiliation(s)
- P Meisel
- Department of Pharmacology, Ernst Moritz Arndt University Greifswald, Germany.
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du BA, Meier W, Lück HJ, Emon G, Moebus V, Schroeder W, Costa S, Bauknecht T, Olbricht S, Jackisch C, Richter B, Wagner U. Chemotherapy versus hormonal treatment in platinum- and paclitaxel-refractory ovarian cancer: a randomised trial of the German Arbeitsgemeinschaft Gynaekologische Onkologie (AGO) Study Group Ovarian Cancer. Ann Oncol 2002; 13:251-7. [PMID: 11886002 DOI: 10.1093/annonc/mdf038] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.8] [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: 11/13/2022] Open
Abstract
BACKGROUND The majority of patients with ovarian cancer are not cured by first-line treatment. Until now, no study could demonstrate any substantial benefit when exposing ovarian cancer patients to second-line chemotherapy. However, most treatment regimens induce toxicity, thus negatively influencing the quality of rather limited life spans. Here we evaluate whether a second-line chemotherapy can offer any benefit compared with a less toxic hormonal treatment. PATIENTS AND METHODS Patients with ovarian cancer progressing during platinum-paclitaxel containing first-line therapy or experiencing relapse within 6 months were eligible. Patients were stratified for response to primary treatment (progression versus no change/response), and measurable versus non-measurable disease. Treatment consisted of either treosulfan 7 g/m5 infused over 30 min or leuprorelin 3.75 mg injected subcutaneously or intramuscularly. Both regimens were repeated every 4 weeks. RESULTS This study began in late 1996, and after 2.5 years accrual an interim analysis was performed when several investigators reported their concern about a suspected lack of efficacy. Following this analysis the recruitment was stopped early and the 78 patients already enrolled were followed up. The majority of patients received treatment until progressive disease was diagnosed or death occurred. Treatment delay was observed rarely and dose reduction was performed only in the treosulfan arm in 5% of 150 courses. Overall, both treatment arms were well tolerated. No objective responses were observed. The median survival time was 36 and 30 weeks in the treosulfan and leuprorelin arms, respectively. Overall survival did not differ between patients with relapse 3-6 months after first-line chemotherapy compared with patients with progressive disease within 3 months. CONCLUSIONS The selected patient population represents a subgroup with extremely poor prognosis. Accordingly, results were not impressive. Both treatment arms showed favourable toxicity data, but failed to show remarkable activity, thus adding only limited evidence to the issue of whether patients with refractory ovarian cancer might benefit from second-line chemotherapy. Even stratified analysis did not identify any subgroup of patients in whom the administration of second-line chemotherapy could demonstrate a clinically relevant survival benefit.
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Affiliation(s)
- Bois A du
- Department of Gynecology & Gynecologic Oncology, Dr-Horst-Schmidt-Kliniken Wiesbaden, Germany.
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