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Lindberg K, Miller J, Weigel S. B - 56Impact of Visual Dimensions on Matrix Reasoning Performance. Arch Clin Neuropsychol 2018. [DOI: 10.1093/arclin/acy061.132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Weigel S, Heindel W, Heidinger O, Heidrich J, Khil L, Hense H. Digitales Mammografie-Screening: Einfluss der regelmäßigen Teilnahme auf die Detektion des ductalen Carcinoma in situ. ROFO-FORTSCHR RONTG 2017. [DOI: 10.1055/s-0037-1600342] [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: 10/19/2022]
Affiliation(s)
- S Weigel
- Universitätsklinikum Münster, Institut für Klinische Radiologie und Referenzzentrum Mammografie, Münster
| | - W Heindel
- Universitätsklinikum Münster, Institut für Klinische Radiologie und Referenzzentrum Mammografie, Münster
| | - O Heidinger
- Landeskrebsregister Nordrhein Westfalen, Münster
| | - J Heidrich
- Landeskrebsregister Nordrhein Westfalen, Münster
| | - L Khil
- Landeskrebsregister Nordrhein Westfalen, Münster
| | - H Hense
- Institut für Epidemiologie und Sozialmedizin, Universität Münster, Münster
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Polzer P, Bokhof B, Heindel W, Weigel S. Biologisch-typisierte invasive Mammakarzinome: Detektionshäufigkeiten durch Screening und im Intervall. ROFO-FORTSCHR RONTG 2017. [DOI: 10.1055/s-0037-1600337] [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: 10/19/2022]
Affiliation(s)
- P Polzer
- Universitätsklinikum Münster, Institut für Klinische Radiologie, Münster
| | - B Bokhof
- Universitätsklinikum Münster, Referenzzentrum Mammografie, Münster
| | - W Heindel
- Universitätsklinikum Münster, Institut für Klinische Radiologie, Münster
| | - S Weigel
- Universitätsklinikum Münster, Institut für Klinische Radiologie, Münster
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Polzer P, Weigel S. [Not Available]. ROFO-FORTSCHR RONTG 2016; 188:870-1. [PMID: 27579682 DOI: 10.1055/s-0042-108061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Weigel S. Grundlagen der Geräteeinstellung und Untersuchungstechnik. ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Weigel S. Tomosynthese: Wo stehen wir heute? ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Hense H, Heidinger O, Heidrich J, Weigel S, Heindel W. Messbare Effekte des Mammografie-Screenings aus epidemiologischer Perspektive. ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Weigel S, Decker T. Impact der Tumorbiologie auf die Bildgebung: Primärdiagnose und Therapiekontrolle. ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Weigel S. Benigne und maligne sonografische Befunde, Stanzbiopsie. ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Polzer P, Weigel S, Heindel W. Prädiktive molekularbiologische Faktoren Screening-detektierter Mammakarzinome nach Erst- und Folgeteilnahme. ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Weigel S, Heidrich J, Heidinger O, Hense H, Heindel W. Digitales Mammografie-Screening: Parenchymdichte und Programm-Sensitivität. ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Kumar R, Weigel S, Meyer R, Niemeyer CM, Fuchs H, Hirtz M. Multi-color polymer pen lithography for oligonucleotide arrays. Chem Commun (Camb) 2016; 52:12310-12313. [DOI: 10.1039/c6cc07087f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Multi-color patterning by polymer pen lithography (PPL) was used to fabricate covalently immobilized fluorophore and oligonucleotide arrays with up to five different components. These can easily be translated for presentation of multiple protein types to a single cell.
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Affiliation(s)
- R. Kumar
- Institute of Nanotechnology (INT) & Karlsruhe Nano Micro Facility (KNMF)
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
- Physical Institute & Center for Nanotechnology (CeNTech)
| | - S. Weigel
- Institute of Biological Interfaces (IBG-1)
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
| | - R. Meyer
- Institute of Biological Interfaces (IBG-1)
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
| | - C. M. Niemeyer
- Institute of Biological Interfaces (IBG-1)
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
| | - H. Fuchs
- Institute of Nanotechnology (INT) & Karlsruhe Nano Micro Facility (KNMF)
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
- Physical Institute & Center for Nanotechnology (CeNTech)
| | - M. Hirtz
- Institute of Nanotechnology (INT) & Karlsruhe Nano Micro Facility (KNMF)
- Karlsruhe Institute of Technology (KIT)
- 76344 Eggenstein-Leopoldshafen
- Germany
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Weigel S, Heindel W, Heidrich J, Heidinger O, Hense HW. Reduction of Advanced Breast Cancer Stages at Subsequent Participation in Mammography Screening. ROFO-FORTSCHR RONTG 2015; 188:33-7. [PMID: 26485700 DOI: 10.1055/s-0041-107835] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
PURPOSE The decline in advanced breast cancer stages is presumably the most relevant surrogate parameter in mammography screening. It represents the last step in the causal cascade that is expected to affect breast cancer-related mortality. To assess the effectiveness of population-based screening, we analyzed the 2-year incidence rates of advanced breast cancers between women participating in the initial and in the first subsequent round. MATERIALS AND METHODS The study included data from 19,563 initial and 18,034 subsequent examinations of one digital screening unit (2008 - 2010). Data on tumor stages, detected by screening or within the following interval of two years (2-year incidence), were provided by the epidemiological cancer registry. Rates of all and combined UICC stages 2, 3 and 4 (advanced stages) were reported for a two-year period. Proportions were tested for significance by using chi-square tests (p < 0.001). RESULTS The 2-year incidence rate of all stages was significantly lower in participants in subsequent screening than in initial screening (0.85 vs. 1.29 per 100 women (%); p < 0.0001). A significantly lower 2-year incidence of advanced stages was observed for subsequent screening compared to initial screening (0.26 % vs. 0.48 %; p = 0.0007). Among women aged 50 to 59 years, the incidence of advanced stages was less clearly different (0.21 % vs. 0.35 %; p = 0.07) than in women aged 60 to 69 years (0.31 % vs. 0.70 %; p = 0.0008). CONCLUSION During the change from prevalent to incident phase mammography screening, a program impact is seen by a lower 2-year incidence of advanced breast cancers within subsequent compared to initial participants, predominately in women aged 60 to 69 years. KEY POINTS • The incidence of advanced tumor stages represents the most relevant surrogate parameter for screening effectiveness. • For the first time the 2-year incidence of advanced breast cancer stages after subsequent mammography screening was analyzed. • We observed a significant effect of screening on the 2-year incidence of advanced stages, predominately in the age group 60 to 69 years.
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Affiliation(s)
- S Weigel
- Department of Clinical Radiology, University Hospital Muenster, Germany
| | - W Heindel
- Department of Clinical Radiology, University Hospital Muenster, Germany
| | - J Heidrich
- Epidemiological Cancer Registry of North Rhine-Westphalia, Muenster, Germany
| | - O Heidinger
- Epidemiological Cancer Registry of North Rhine-Westphalia, Muenster, Germany
| | - H W Hense
- Institute of Epidemiology and Social Medicine, University of Muenster, Germany
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Heidrich J, Hense HW, Weigel S, Heindel W, Heidinger O. Evaluation of mammography screening in North Rhine-Westphalia using the European reference standard. Eur J Public Health 2015. [DOI: 10.1093/eurpub/ckv167.024] [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: 11/12/2022] Open
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Weigel S. Tomosynthese und synthetische Mammografie. ROFO-FORTSCHR RONTG 2015. [DOI: 10.1055/s-0035-1551202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Heindel W, Weigel S. Screening – wissenschaftliche Grundlagen und klinischer Nutzen am Beispiel der Brustkrebs-Früherkennung. ROFO-FORTSCHR RONTG 2015. [DOI: 10.1055/s-0035-1551218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Weigel S, Heindel W, Heidinger O, Heidrich J, Berkemeyer S, Hense H. Nehmen fortgeschrittene Brustkrebsstadien nach wiederholter Teilnahme am Mammografie-Screening-Programm einschließlich der Betrachtung des Screening-Intervalls ab? ROFO-FORTSCHR RONTG 2015. [DOI: 10.1055/s-0035-1551197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Timpe L, Berkemeyer S, Puesken M, Tio J, Heindel W, Weigel S. Rates of Presurgical Underestimation of Breast Cancer after Standardized Assessment of Breast Calcifications. ROFO-FORTSCHR RONTG 2015; 187:445-9. [DOI: 10.1055/s-0034-1399273] [Citation(s) in RCA: 2] [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] [Indexed: 10/23/2022]
Affiliation(s)
- L. Timpe
- Department of Clinical Radiology and Reference Center for Mammography, University Hospital Muenster, Germany
| | - S. Berkemeyer
- Department of Clinical Radiology and Reference Center for Mammography, University Hospital Muenster, Germany
| | - M. Puesken
- Department of Clinical Radiology and Reference Center for Mammography, University Hospital Muenster, Germany
| | - J. Tio
- Department of Gynecology and Obstetrics, University Hospital Muenster, Germany
| | - W. Heindel
- Department of Clinical Radiology and Reference Center for Mammography, University Hospital Muenster, Germany
| | - S. Weigel
- Department of Clinical Radiology and Reference Center for Mammography, University Hospital Muenster, Germany
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Peters R, Rivera ZH, Bouwmeester H, Weigel S, Marvin H. Advanced analytical techniques for the measurement of nanomaterials in complex samples: a comparison. Quality Assurance and Safety of Crops & Foods 2014. [DOI: 10.3920/qas2014.0410] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- R.J.B. Peters
- RIKILT, Wageningen UR, P.O. Box 230, 6700 AE Wageningen, the Netherlands
| | - Z. Herrera Rivera
- RIKILT, Wageningen UR, P.O. Box 230, 6700 AE Wageningen, the Netherlands
| | - H. Bouwmeester
- RIKILT, Wageningen UR, P.O. Box 230, 6700 AE Wageningen, the Netherlands
| | - S. Weigel
- RIKILT, Wageningen UR, P.O. Box 230, 6700 AE Wageningen, the Netherlands
| | - H.J.P. Marvin
- RIKILT, Wageningen UR, P.O. Box 230, 6700 AE Wageningen, the Netherlands
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Weigel S, Heindel W, Berkemeyer S. Führt die wiederholte Teilnahme am Mammografie-Screening-Programm zu einer reduzierten Detektion fortgeschrittener Brustkrebsstadien? ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Weigel S, Heindel W. Systematische unabhängige Doppelbefundung im deutschen Mammografie-Screening-Programm: Was ist der Zugewinn? ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Weigel S, Püsken M, Tio J, Heindel W. Wie häufig kommt es nach minimal- invasiver Abklärung von Mikroverkalkungen zu einem histopathologischen „Heraufstufen“ postoperativ? ROFO-FORTSCHR RONTG 2014. [DOI: 10.1055/s-0034-1373193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Weigel S. Screening - wonach wird gesucht? Fallsammlung mit TED. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1345857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Weigel S, Verloh C. Diagnostik beim Mann. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1346587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Weigel S, Girnus R, Sommer A, Lenzen H, Heindel W, Berkemeyer S. Scan-System versus Speicherfolien-System: Ein Vergleich zweier digitaler Mammografie-Systeme im Screening anhand physikalischer und medizinischer Parameter. ROFO-FORTSCHR RONTG 2013. [DOI: 10.1055/s-0033-1346496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Linsinger TPJ, Chaudhry Q, Dehalu V, Delahaut P, Dudkiewicz A, Grombe R, von der Kammer F, Larsen EH, Legros S, Loeschner K, Peters R, Ramsch R, Roebben G, Tiede K, Weigel S. Validation of methods for the detection and quantification of engineered nanoparticles in food. Food Chem 2012; 138:1959-66. [PMID: 23411331 DOI: 10.1016/j.foodchem.2012.11.074] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Revised: 10/29/2012] [Accepted: 11/12/2012] [Indexed: 11/25/2022]
Abstract
The potential impact of nanomaterials on the environment and on human health has already triggered legislation requiring labelling of products containing nanoparticles. However, so far, no validated analytical methods for the implementation of this legislation exist. This paper outlines a generic approach for the validation of methods for detection and quantification of nanoparticles in food samples. It proposes validation of identity, selectivity, precision, working range, limit of detection and robustness, bearing in mind that each "result" must include information about the chemical identity, particle size and mass or particle number concentration. This has an impact on testing for selectivity and trueness, which also must take these aspects into consideration. Selectivity must not only be tested against matrix constituents and other nanoparticles, but it shall also be tested whether the methods apply equally well to particles of different suppliers. In trueness testing, information whether the particle size distribution has changed during analysis is required. Results are largely expected to follow normal distributions due to the expected high number of particles. An approach of estimating measurement uncertainties from the validation data is given.
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Affiliation(s)
- T P J Linsinger
- European Commission, Joint Research Centre, Institute for Reference Materials and Measurements (IRMM), Retieseweg 111, 2440 Geel, Belgium.
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Weigel S, Heindel W. Analyse falsch-negativer Befundungen mit Demonstration von Fallbeispielen. ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Weigel S, Heindel W, Biesheuvel C. Bilateraler Ultraschall in der Abklärungsdiagnostik des Mammographie-Screenings: Einfluss auf die Karzinomdetektion? ROFO-FORTSCHR RONTG 2012. [DOI: 10.1055/s-0032-1311305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Huet AC, Charlier C, Weigel S, Godefroy SB, Delahaut P. Validation of an optical surface plasmon resonance biosensor assay for screening (fluoro)quinolones in egg, fish and poultry. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2011; 26:1341-7. [PMID: 21462578 DOI: 10.1080/02652030903013328] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
A surface plasmon resonance biosensor immunoassay has been developed for multi-residue determination of 13 (fluoro)quinolone antibiotics in poultry meat, eggs and fish. The following performance characteristics were determined according to the guidelines laid down for screening assay validation in European Decision 2002/657/EC: detection capability, specificity/selectivity, decision limit, repeatability, ruggedness and stability. The detection capability estimated for norfloxacin, the reference fluoroquinolone, was below 0.5, 1 and 1.5 ng g⁻¹ for poultry meat, egg and fish, respectively. The screening assay proved specific and showed satisfactory sensitivity below the MRL levels even though flumequine and oxolinic acid had lower cross-reactivities. A wide range of non-MRL substances were also detected at concentrations below 10 ng g⁻¹. Repeatability was good with both intra- and inter-assay coefficients of variation 56%; ruggedness was also demonstrated.
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Affiliation(s)
- A-C Huet
- Cer Groupe, Santés animale et humaine, Rue Point du Jour 8, 6900 Marloie, Belgium.
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Weigel S, Decker T, Korsching E, Biesheuvel C, Wöstmann A, Böcker W, Hungermann D, Roterberg K, Tio J, Heindel W. Minimal Invasive Biopsy Results of ”Uncertain Malignant Potential” in Digital Mammography Screening: High Prevalence but also High Predictive Value for Malignancy. ROFO-FORTSCHR RONTG 2011; 183:743-8. [DOI: 10.1055/s-0031-1273330] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Weigel S, Heindel W. Mikrokalk-detektierte Läsionen im digitalen Mammographie-Screening: Häufigkeiten und Malignitätsraten. ROFO-FORTSCHR RONTG 2011. [DOI: 10.1055/s-0031-1278768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Boecker W, Hallas C, Korsching E, Stahnke L, Decker T, Tio J, Weigel S, Buchwalow I, Loening T. Abstract P6-01-08: Keratin 5/14+ Progenitor Cell Concept of Breast Epithelium: Revisited. Cancer Res 2010. [DOI: 10.1158/0008-5472.sabcs10-p6-01-08] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: The role of keratin (K) 5/14+ progenitor cells as precursor cells of the breast epithelium has been demonstrated both in culture and in situ. This cell model opens a new field in which distinct cell subtypes can be evaluated in terms of their functional state and describes how these cells may give rise to either benign or malignant tumors. Material and Methods: In this study, we used modern triple immunofluorescent labeling experiments to visualize directly different cell types and their functional status applying, as a reference, antibodies to basal (K5/14) and glandular (K8/18) keratins and a myoepithelial marker in combination with antibodies to ER-alpha, Ki67, BCL2 and c-kit in normal resting breast epithelium and in 30 cases of ductal neoplasia of low grade pathway and 8 cases of epithelial hyperplasia. Different cell types were quantitatively assayed. Immunolabeling results were supported with quantitative real time PCR.
Results: Basal and glandular keratins in the normal luminal breast epithelium were found to be expressed in highly specific sequential pattern from K5/14+progenitor cells to K8/18+ glandular cells. ER alpha, Ki67, c-kit and BCL2 were found differentially expressed in various subtypes of the breast epithelium, ER-alpha was expressed only in a subset of glandular cells thus subdividing the glandular lineage into ER-alphapositive and negative subcategories. The highest Ki67-proliferation was found in phenotypically glandular cells which are ER-alpha negative. BCL2 was characteristically co-expressed in glandular cells, whereas c-kit was detected mainly in earlier glandular cells. Benign epithelial hyperplasia showed a striking similarity to normal luminal breast epithelium. In terms of functional differentiation these cells disclosed the same ER-alpha, BCL2 and c-kit expression as that observed in normal epithelium. In contrast to UDH, all types of low-grade in-situ neoplasia of ductal type are characterized by expression of only glandular keratins 8/18. The tumour cells co-expressed ER-alpha, BCL2 and Ki67. On the other hand, c-Kit was not expressed in these lesions.
Discussion: From our data, it is evident that basal (K5/14) and glandular keratins (K8/18) are expressed in highly specific hierarchical patterns related to stage of glandular differentiation. This phenotypic hierarchy of cells is furthermore bound to a differential expression of ER, Ki67, c-kit and BCL2 in a very specific manner. Usual ductal hyperplasia disclosed a striking similarity to the resting glandular epithelium. In contrast, all types of low grade intraepithelial neoplasia not only retain the keratin patterns of their (normal) glandular counterpart but show the same functional differentiation with a positive expression of ER and BcL2 and lack of c-kit. This similarity indicates that these lesions may derive from more differentiated glandular cells of the lobular breast epithelium. The data presented here confirm that the K5/14+ progenitor cell concept provides important insight into the functional nature of normal breast epithelium and in proliferative diseases.
Citation Information: Cancer Res 2010;70(24 Suppl):Abstract nr P6-01-08.
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Affiliation(s)
- W Boecker
- University of Muenster, Germany; Institute for Hematopatholgy, Hamburg, Germany
| | - C Hallas
- University of Muenster, Germany; Institute for Hematopatholgy, Hamburg, Germany
| | - E Korsching
- University of Muenster, Germany; Institute for Hematopatholgy, Hamburg, Germany
| | - L Stahnke
- University of Muenster, Germany; Institute for Hematopatholgy, Hamburg, Germany
| | - T Decker
- University of Muenster, Germany; Institute for Hematopatholgy, Hamburg, Germany
| | - J Tio
- University of Muenster, Germany; Institute for Hematopatholgy, Hamburg, Germany
| | - S Weigel
- University of Muenster, Germany; Institute for Hematopatholgy, Hamburg, Germany
| | - I Buchwalow
- University of Muenster, Germany; Institute for Hematopatholgy, Hamburg, Germany
| | - T. Loening
- University of Muenster, Germany; Institute for Hematopatholgy, Hamburg, Germany
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Kuhl C, Weigel S, Schrading S, Arand B, Tombach B, Leutner C, Heindel W, Rieber-Brambs A, Reiser M, Schild H. Diagnostische Kennzahlen der multi-modalen Früherkennung des Mammakarzinoms im Multicenter-Setting: Vergleich der Ergebnisse in drei verschiedenen Standorten. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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34
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Weigel S. Fallbeispiele aus den MD-Konferenzen. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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35
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Schrading S, Weigel S, Arand B, Tombach B, Leutner C, Heindel W, Rieber-Brambs A, Reiser M, Schild H, Kuhl C. Stellenwert der Sonographie in der Früherkennung des familiären Mammakarzinoms – Ergebnisse einer Multicenter-Studie (EVA-STUDIE). ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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36
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Weigel S. B3 Läsionen im Screening – Häufigkeiten und Strategien: Ergebnisse der Screening-Einheit des Referenzzentrums Münster. ROFO-FORTSCHR RONTG 2010. [DOI: 10.1055/s-0030-1252252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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37
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Weigel S, Batzler WU, Decker T, Hense HW, Heindel W. First epidemiological analysis of breast cancer incidence and tumor characteristics after implementation of population-based digital mammography screening. ROFO-FORTSCHR RONTG 2009; 181:1144-50. [PMID: 19859859 DOI: 10.1055/s-0028-1109831] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
PURPOSE To epidemiologically evaluate the impact of digital mammography screening on incidence rates and tumor characteristics for breast cancer. MATERIALS AND METHODS The first German digital screening units in the clinical routine were evaluated during the implementation period by using data from the cancer registry to compare the incidence rate of breast cancers and prognostic characteristics. 74 % of women aged 50 - 69 within the region of Muenster/Coesfeld/Warendorf were invited between 10 / 2005 and 12 / 2007 for initial screening; 55 % participated (n = 35 961). RESULTS In 2002 - 2004 the average breast cancer incidence rate (per 100,000) was 297.9. During the implementation of screening, the rate rose to 532.9 in 2007. Of the 349 cancers detected with screening, 76 % (265 / 349) were invasive compared to 90 % (546 / 608) of cases not detected with screening during the same period. 37 % (97 / 265) of cancers detected in the screening program had a diameter of <or= 10 mm and 75 % (198 / 265) were node-negative compared to 15 % (79 / 546) and 64 % (322 / 503), respectively, in cancers detected outside the screening program. The distribution of invasive tumor size (pT categories) and the nodal status differed with statistical significance between cancers detected in and outside the program (p = 0.005 and p = 0.004, respectively). CONCLUSION Epidemiological data shows that the implementation of a population-based screening program led to a relevant increase in the age-specific breast cancer incidence rate. The characteristics of breast cancers detected in the screening program comply with the requirements of the European guidelines and are significantly favorable compared to tumors diagnosed outside the program. These findings indicate that digital mammography screening fulfills the requirements for an early tumor detection tool.
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Affiliation(s)
- S Weigel
- Institut für Klinische Radiologie und Referenzzentrum Mammographie Münster, Universitätsklinikum Münster, Germany.
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Heindel W, Hungermann D, Weigel S, Tio J, Decker T. Radiologisch-pathologische Korrelation, interdisziplinäre OP-Planung und perioperative Qualitätssicherung im Team. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221233] [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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Hungermann D, Weigel S, Korsching E, Heindel W, Böcker W, Decker T. [Diagnostics of microcalcifications from minimally invasive biopsies in mammography screening: results from the prevalence phase]. Pathologe 2009; 30:31-5. [PMID: 19184025 DOI: 10.1007/s00292-008-1100-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND In mammography screening programmes carried out according to European guidelines, minimally invasive biopsies (MIB) are performed on up to 3% of participants. The aim of this study was to analyse the spectrum of histopathological findings including B categories in MIBs with microcalcifications compared to MIBs without microcalcifications. MATERIAL AND METHODS Prospectively collected histological findings of MIBs taken during the period July 2006 to June 2007 were analysed using the Breast Screening Pathology Database of the Reference Centre in Münster. RESULTS Of the 4,326 MIBs investigated, 2,161 were benign (B1-B3) whereas 2,165 were malignant (B4-B5) resulting in an overall malignancy rate of 50.04%. Of the MIBs 1,809 contained microcalcifications and 2,517 did not. Cases with microcalcifications showed a different distribution of B categories: B2 was found in 44.5% versus 24.2%, B3 in 18.2% versus 5.5% and the malignancy rate of cases with microcalcifications was 36.8% versus 59.5%. Of all cases of ductal carcinoma in situ (DCIS) detected in the screening programme, 83.35% were diagnosed in MIBs containing microcalcifications. CONCLUSIONS MIBs containing microcalcifications showed a different spectrum of diagnoses, especially higher rates of B3 lesions. Even though MIBs without microcalcifications showed a higher overall malignancy rate, most cases of DCIS were diagnosed in MIB containing microcalcifications.
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Affiliation(s)
- D Hungermann
- Brust-Screening-Pathologie Gerhard Domagk-Institut für Pathologie, Universitätsklinikum Münster, Domagkstr 17, 48149, Münster, Deutschland
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Böcker W, Hungermann D, Weigel S, Tio J, Decker T. [Immunohistochemistry in breast pathology: differential diagnosis of epithelial breast lesions]. Pathologe 2009; 30:13-9. [PMID: 19184023 DOI: 10.1007/s00292-008-1103-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Proliferative epithelial breast lesions include a wide variety of benign hyperplastic and noninvasive neoplastic lesions, as well as invasive carcinomas. Mammographically these lesions may show microcalcifications, architectural distortions or mass lesions. The task of the pathologist begins with a preoperative diagnosis by means of minimally invasive biopsy. His diagnosis forms the basis for not only the radiological-pathological correlation diagnosis, but also for the management of benign proliferative breast disease lesions, as well as therapeutic decisions in the case of malignant lesions.In daily practice, immunohistochemistry is the method of choice for clarifying difficult cases. The aim of this chapter is to describe the relevant markers in breast pathology and to provide an algorithmic approach to different proliferative breast disease lesions.
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Affiliation(s)
- W Böcker
- Gerhard-Domagk-Institut für Pathologie, Universitätsklinikum Münster, Domagk-Str. 17, 48159, Münster, Deutschland.
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Huet AC, Charlier C, Singh G, Godefroy SB, Leivo J, Vehniäinen M, Nielen MWF, Weigel S, Delahaut P. Development of an optical surface plasmon resonance biosensor assay for (fluoro)quinolones in egg, fish, and poultry meat. Anal Chim Acta 2008; 623:195-203. [PMID: 18620924 DOI: 10.1016/j.aca.2008.06.009] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2008] [Revised: 05/27/2008] [Accepted: 06/03/2008] [Indexed: 11/25/2022]
Abstract
The aim of this study was to develop an optical biosensor inhibition immunoassay, based on the surface plasmon resonance (SPR) principle, for use as a screening test for 13 (fluoro)quinolones, including flumequine, used as veterinary drugs in food-producing animals. For this, we immobilised various quinolone derivatives on the sensor chip and tested binding of a range of different antibodies (polyclonal and one engineered antibody) in the presence and absence of free (fluoro)quinolones. The main challenge was to detect flumequine in an assay giving good results for the other compounds. One antigen-antibody combination proved satisfactory: polyclonal antibodies raised against a dual immunogen and, on the sensor chip, a fluoroquinolone derivative. It was the first time that this concept of the bi-active antibody was described in the literature. The assay, optimised for detection in three matrices (poultry muscle, fish, and egg), was tested on incurred samples prepared by liquid extraction followed by two washing steps. This rapid, simple method proved adequate for detecting at least 13 (fluoro)quinolones at concentrations below established maximum residue levels (MRLs). The reference molecule norfloxacin could be detected in the range of 0.1-10 microg kg(-1) in extracts of egg and poultry meat and in the range of 0.1-100 microg kg(-1) in extracts of fish. The determined midpoints of these calibration curves were about 1, 1.5 and 3 microg kg(-1) in poultry meat, egg and fish, respectively.
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Affiliation(s)
- A-C Huet
- CER Groupe, Laboratoire d'Hormonologie, Rue Point du Jour 8, 6900 Marloie, Belgium.
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Weigel S, Hungermann D, Böcker W, Heindel W, Decker T. Minimal invasive Biopsien im Mammographie-Screening: Malignitätsraten und Stellenwert der Biopsiemodalitäten. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Heindel W, Wöstmann A, Weigel S. MRT im Mammographie-Screening-Programm und in der klinischen vertragsärztlichen Versorgung. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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44
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Heindel W, Lenzen H, Weigel S. Anforderungen des Referenzzentrums an den Programmverantwortlichen Arzt (PVA). ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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45
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Weigel S, Girnus R, Czwoydzinski J, Decker T, Spital S, Heindel W. Digital mammography screening: average glandular dose and first performance parameters. ROFO-FORTSCHR RONTG 2007; 179:892-5. [PMID: 17705112 DOI: 10.1055/s-2007-963387] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
PURPOSE The Radiation Protection Commission demanded structured implementation of digital mammography screening in Germany. The main requirements were the installation of digital reference centers and separate evaluation of the fully digitized screening units. Digital mammography screening must meet the quality standards of the European guidelines and must be compared to analog screening results. We analyzed early surrogate indicators of effective screening and dosage levels for the first German digital screening unit in a routine setting after the first half of the initial screening round. MATERIALS AND METHODS We used three digital mammography screening units (one full-field digital scanner [DR] and two computed radiography systems [CR]). Each system has been proven to fulfill the requirements of the National and European guidelines. The radiation exposure levels, the medical workflow and the histological results were documented in a central electronic screening record. RESULTS In the first year 11,413 women were screened (participation rate 57.5 %). The parenchymal dosages for the three mammographic X-ray systems, averaged for the different breast sizes, were 0.7 (DR), 1.3 (CR), 1.5 (CR) mGy. 7 % of the screened women needed to undergo further examinations. The total number of screen-detected cancers was 129 (detection rate 1.1 %). 21 % of the carcinomas were classified as ductal carcinomas in situ, 40 % of the invasive carcinomas had a histological size <or= 10 mm and 61 % < 15 mm. The frequency distribution of pT-categories of screen-detected cancer was as follows: pTis 20.9 %, pT1 61.2 %, pT2 14.7 %, pT3 2.3 %, pT4 0.8 %. 73 % of the invasive carcinomas were node-negative. CONCLUSION The average glandular dose for all three digital screening units was below the AGD of the analog mammography screening units (1.7 mGy) used in the German trial projects. Nevertheless, the performance indicators of the European guidelines were fulfilled with respect to the prevalent tumor detection rate and tumor size distribution while meeting an acceptable recall rate. This first evaluation of a digital screening unit in Germany demonstrates that the quality standards are met at lower radiation dosage levels than in screen-film mammography.
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Affiliation(s)
- S Weigel
- Institut für Klinische Radiologie und Referenzzentrum Mammografie mit Screening-Einheit Münster-Nord, Universitätsklinikum Münster
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Hartwig M, Weigel S, Bernig T, Bader P, Dölken R, Beck J. Maintenance immunotherapy by repetitive low-dose donor lymphocytes infusions in a child with relapse state aml after allogeneic stem cell transplantation. Pediatr Hematol Oncol 2007; 24:137-40. [PMID: 17454780 DOI: 10.1080/08880010601125443] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The treatment of a child with a relapsed state acute leukemia after allogeneic stem cell transplantation (allo-SCT) is a challenge. The authors report about a child with an acute myelogenous leukemia (AML), which relapsed after allo-SCT despite immunological intervention. It was further treated with a second line chemotherapy followed by an infusion of stem cells and donor lymphocytes. Because of an immense risk for a further relapse, an immunological maintenance therapy was also performed, consisting of repetitive infusions of low doses of donor lymphocytes combined with low-dose chemotherapy. Presently, the child is in continuous complete remission and has a good quality of life.
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Affiliation(s)
- M Hartwig
- Department of Pediatric Oncology and Hematology, University of Greifswald, Greifswald, Germany
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Czwoydzinski J, Sommer A, Weigel S, Lenzen H, Heindel W. Entwicklung eines Data-Warehouse-Systems zur Evaluation des Mammographie-Screening-Programms. ROFO-FORTSCHR RONTG 2007. [DOI: 10.1055/s-2007-977053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Weigel S, Nordhoff D, Welling B, Horst J, Krämer S, Tombach B, Heindel W. Familiärer Brustkrebs: Ergebnisse zur Früherkennung an einem humangenetisch definierten Risikokollektiv im Zentrum Münster nach der 2. Runde. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-940837] [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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49
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Weigel S, Heindel W. Biopsieverfahren zur Abklärung mammographisch detektierter Läsionen: Standards und relative Indikationen. ROFO-FORTSCHR RONTG 2006. [DOI: 10.1055/s-2006-940462] [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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50
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Herbert Z, Weigel S, Sendemir E, Marshall A, Caldwell JD, Petrusz P, Peuckert C, Jirikowski GF. Androgen-binding protein is co-expressed with oxytocin in the male reproductive tract. Anat Histol Embryol 2005; 34:286-93. [PMID: 16159369 DOI: 10.1111/j.1439-0264.2005.00605.x] [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] [Indexed: 11/27/2022]
Abstract
Androgen-binding protein (ABP) and the posterior lobe hormone oxytocin (OT) were co-localized in male rat reproductive organs. Immunostaining of serial semi-thin sections revealed a high rate of coexistence of both antigens in Sertoli cells and in the epithelial cells of the prostate. There was a considerably less co-localization of OT and ABP in epithelial cells of the epididymis, and in the different tissues of the ductus deferens. In situ hybridization with synthetic oligonucleotides complementary to a fragment of ABP mRNA showed specific staining in the same sites that were immunostained for ABP. ABP was isolated by affinity chromatography from homogenates of testis, epididymis, prostate and the content of the prostate lumen. Identical protein patterns could be shown with surface-enhanced laser desorption/ionization time-of-flight mass spectrometry in all samples except for the epididymis indicating that ABP structure is similar in all these tissues. ABP seems to be expressed in specified cells throughout the male rat reproductive tract. Most of these cells appear to be oxytocinergic. ABP and OT have previously been detected in the ejaculate. The observed epithelial cells are likely to be their source.
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Affiliation(s)
- Z Herbert
- Department of Anatomy II, Friedrich Schiller University, 07743 Jena, Germany
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