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Liu K, Seegers S, Cao W, Wanasundara J, Chen J, Silva AE, Ross K, Franco AL, Vrijenhoek T, Bhowmik P, Li Y, Wu X, Bloomer S. An International Collaborative Study on Trypsin Inhibitor Assay for Legumes, Cereals, and Related Products. J AM OIL CHEM SOC 2021. [DOI: 10.1002/aocs.12459] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Keshun Liu
- National Small Grains and Potato Germplasm Research Unit United States Department of Agriculture, Agricultural Research Service 1691 S 2700 W Aberdeen ID 83210 USA
| | - Susan Seegers
- Bunge Creative Solution Center 16 Research Park Drive, St. Charles MO 63304 USA
| | - Wenming Cao
- Wilmar (Shanghai) R&D Center 118 Gaodong Road, Pudong New District, Shanghai 200137 China
| | - Janitha Wanasundara
- Saskatoon Research and Development Centre Agriculture and Agri‐Food Canada 107 Science Place, Saskatoon SK S7N 0X2 Canada
| | - Juxing Chen
- Novus International Inc. 20 Research Park Drive, St Charles MO 63304 USA
| | - Alessandro Esteves Silva
- CBO Laboratory 327 Arquiteto Clayton Alves Corrêa Avenue, Vale Verde, Valinhos SP 13279‐071 Brazil
| | - Kristopher Ross
- Eurofins Food Integrity and Innovation 3301 Kinsman Blvd., Madison WI 53704 USA
| | | | - Theo Vrijenhoek
- Nutreco Nederland BV – MasterLab Veerstraat 38, Boxmeer 5831 JN Netherlands
| | - Pankaj Bhowmik
- Aquatic and Crop Resource Development National Research Council of Canada 110 Gymnasium Place, Saskatoon SK S7N 0W9 Canada
| | - Yonghui Li
- Grain Science and Industry Kansas State University 1301 Mid Campus Dr., Manhattan KS 66506 USA
| | - Xin Wu
- American Oil Chemists' Society 2710 S. Boulder, Urbana IL 61802 USA
| | - Scott Bloomer
- American Oil Chemists' Society 2710 S. Boulder, Urbana IL 61802 USA
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Dettenkofer M, Seegers S, Antes G, Motschall E, Schumacher M, Daschner FD. Does the Architecture of Hospital Facilities Influence Nosocomial Infection Rates? A Systematic Review. Infect Control Hosp Epidemiol 2015; 25:21-5. [PMID: 14756214 DOI: 10.1086/502286] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [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: 11/03/2022]
Abstract
AbstractObjective:To review the evidence regarding the effects of interventions to improve hospital design and construction on the occurrence of nosocomial infections.Methods:Systematic review of experimental and non-experimental, architectural intervention studies in intensive care units (ICUs), surgical departments, isolation units, and hospitals in general. The studies dated from 1975, and were in English, French, German, Italian, and Spanish. Regardless of format, the studies were identified through seven medical databases, reference lists, and expert consultation.Results:One hundred seventy-eight scientific articles were identified; however, none of these described a meta-analy-sis, systematic review, or randomized, controlled trial. Most of the articles were categorized at the lowest level of evidence (expert judgment or consensus statements). Only 17 described completed concurrent or historical cohort studies matching the inclusion criteria (ICUs, 9; surgical departments, 4; isolation units, 2; hospitals in generai, 2). The interventions generally included a move to other premises or renovation. However, in many studies, the staff-to-patient ratio was also improved. Some studies showed lower infection rates after intervention, but this finding cannot be generalized because of confounding and fre-quently small study populations.Conclusions:The lack of stringent evidence linking hospital design and construction with the prevention of nosocomial infection is partly attributable to the multifactorial nature of these infections, and some improvement will be seen if basic conditions such as the availability of sufficient space, isolation capac-ity, and facilities for handwashing are met. However, to our knowledge, other factors, especially the improper hand hygiene of medical staff, have greater impact.
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Affiliation(s)
- M Dettenkofer
- Institute of Environmental Medicine and Hospital Epidemiology, University Hospital of Freiburg, Freiburg, Germany
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Brockhoff G, Machleidt A, Piendl G, Seegers S, Sassen A, Diermeier-Daucher S, Buchholz S, Ortmann O. P1-12-23: HER4 Coexpression Is Associated with Improved Recurrence Free Survival in HER2−Positive, Herceptin Treated Patients. Cancer Res 2011. [DOI: 10.1158/0008-5472.sabcs11-p1-12-23] [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: Individual therapy efficiency of HER2−positive metastatic and pre-metastatic breast cancer patients varies significantly and spans from effectual responsiveness over acquired insensitivity to complete resistance from the outset. Thus no predictive information can be deduced from HER2 diagnostics so that molecular biomarkers indicative for sensitivity / resistance to Herceptin are needed to be identified. The HER2 related HER4-receptor has been shown to have ambivalent (pro-apoptotic or pro-proliferative) activity and consequently represents a prime candidate to affect HER2 activity under Herceptin treatment. We retrospectively analyzed potential her4 gene amplification and HER4 protein expression in HER2−positive, Herceptin treated patients. Patient's overall and recurrence free survival was evaluated as a function of HER2/HER4 expression. Methods: Using dual color Fluorescence in-situ Hybridization (FISH probes, Zytovision, Bremerhaven, Germany) and qPCR (LC480, Roche, Penzberg, Germany) we quantitatively investigated primary breast cancer tissues from nearly 50 (FISH) and 160 (PCR) patients who received Herceptin treatment. We quantified the her4 gene copy numbers and evaluated the protein expression profile of all four known HER4 isotypes (JM-a/CYT1, JM-a/CYT2, JM-b/CYT1, JM-b/CYT2). Results: FISH analysis revealed a positive and independent prognostic marker in Herceptin treated breast cancer patients with respect to overall survival. Moreover by quantitative PCR analysis we found a significant variability of HER4 protein expression (JM-a/CYT1 and JM-a/CYT2; no JM-b isotypes) in HER2 positive breast cancer tissues, whereas HER2/HER4 positive patients show a significant better recurrence free survival compared to HER2 positive but HER4 negative patients (p = 0,003).
Conclusions: HER4 has been demonstrated to potentially exert tumor suppressing activity and in turn to have a favourable impact on the course of breast cancer disease. We show here that HER4 expression prolongs in particular recurrence free survival of Herceptin treated patients which indicates a functional integration of HER4 into anti-HER2 targeting. Complementing functional studies allowing for isotype specific function of HER4 will elucidate the special role of this receptor tyrosine kinase in the context of Herceptin treatment and might facilitate individualized anti-ErbB-receptor targeting with higher efficiency.
Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr P1-12-23.
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Affiliation(s)
- G Brockhoff
- 1University Medical Center Regensburg, Regensburg, Bavaria, Germany
| | - A Machleidt
- 1University Medical Center Regensburg, Regensburg, Bavaria, Germany
| | - G Piendl
- 1University Medical Center Regensburg, Regensburg, Bavaria, Germany
| | - S Seegers
- 1University Medical Center Regensburg, Regensburg, Bavaria, Germany
| | - A Sassen
- 1University Medical Center Regensburg, Regensburg, Bavaria, Germany
| | | | - S Buchholz
- 1University Medical Center Regensburg, Regensburg, Bavaria, Germany
| | - O Ortmann
- 1University Medical Center Regensburg, Regensburg, Bavaria, Germany
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Plander M, Seegers S, Ugocsai P, Diermeier-Daucher S, Iványi J, Schmitz G, Hofstädter F, Schwarz S, Orsó E, Knüchel R, Brockhoff G. Different proliferative and survival capacity of CLL-cells in a newly established in vitro model for pseudofollicles. Leukemia 2009; 23:2118-28. [DOI: 10.1038/leu.2009.145] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [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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5
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Plander M, Seegers S, Ugocsai P, Schwarz S, Orsó E, Kn¨uchel R, Iványi J, Brochkoff G. O44 Characterization of the proliferating chronic lymphocytic leukemia cells in an in vitro model for pseudofollicles. Blood Rev 2007. [DOI: 10.1016/s0268-960x(07)70061-9] [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: 11/25/2022]
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Thode M, Seegers S, von den Driesch P. Kutane Langerhanszell-Histiozytose bei Erwachsenen. Akt Dermatol 2005. [DOI: 10.1055/s-2005-861275] [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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7
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Hellerbrand C, Bosserhoff AK, Seegers S, Lingner G, Wrede C, Lock G, Schölmerich J, Büttner R. Mutation analysis of the HFE gene in German hemochromatosis patients and controls using automated SSCP-based capillary electrophoresis and a new PCR-ELISA technique. Scand J Gastroenterol 2001; 36:1211-6. [PMID: 11686223 DOI: 10.1080/00365520152584860] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND The diagnosis of hereditary hemochromatosis (HH) before the onset of iron-overload has been difficult in the past. However, a convincing candidate gene for HH: HFE has been described recently. The aims of this study were: 1) To determine the prevalence of the hemochromatosis associated mutations C282Y and H63D of the HFE gene in patients from Southern Germany with hemochromatosis phenotype; and 2) to test two new, time- and cost-saving methods: automated SSCP-based capillary electrophoresis (SSCP-CE) and a PCR-ELISA technique for the analysis of HFE mutations. METHODS HFE genotype was studied in 36 unrelated HH patients and 126 controls from Southern Germany. In addition, family screening was performed in 76 relatives. The C282Y and H63D mutations were detected using SSCP-CE and restriction length polymorphism (RFLP). The C282Y mutation was additionally analysed by a PCR-ELISA. RESULTS Twenty-six (72%) HH patients were homozygous for mutation C282Y, and three compound heterozygous for C282Y and H63D. One patient was homozygous for H63D. By performing family screening, six additional patients with the +/+ C282Y mutation were identified. The results of the SSCP-CE and the PCR-ELISA analysis agreed completely with data obtained by RFLP. CONCLUSIONS SSCP-CE and PCR-ELISA analysis proved to be reliable methods for HFE genotyping and therefore represent cost- and time-effective alternative methods to the widely used restriction analysis allowing large populations to be screened for HH associated with HFE mutations. Surprisingly, only 72% of our HH patients had the C282Y +/+ genotype. This indicates that hemochromatosis in Southern Germany is genetically more heterogeneous than in other regions. A challenge for the future will be to define the genetic or environmental factors responsible for iron-overload in HH patients who do not show typical alterations of the HFE gene.
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Affiliation(s)
- C Hellerbrand
- Dept. of Internal Medicine I, University of Regensburg, Germany.
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8
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Bosserhoff AK, Seegers S, Hellerbrand C, Schölmerich J, Büttner R. Rapid genetic screening for hemochromatosis using automated SSCP-based capillary electrophoresis (SSCP-CE). Biotechniques 1999; 26:1106-10. [PMID: 10376150 DOI: 10.2144/99266st02] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Hereditary hemochromatosis (HHC) represents an autosomal recessive disease in which increased iron absorption causes iron overload and irreversible tissue damage. The recently detected association between two point mutations in the HFE gene on chromosome 6p and HHC has made it possible to screen for the disease before the onset of irreversible tissue damage. Conventional genetic testing is based on restriction fragment-length polymorphisms (RFLP) using two endonuclease recognition sites in codon 63 or 282, respectively. In this study, we have adapted single-strand conformation polymorphism analysis for capillary electrophoresis (SSCP-CE) to detect homozygote or heterozygote point mutations. Two HFE gene fragments spanning codons 63 and 282 were amplified by a duplex PCR using genomic DNA from peripheral blood or from tissue sections of paraffin-embedded liver biopsies as template. Thereby, rapid genotyping of both HFE mutations was achieved with a single PCR, omitting the need of further analysis by restriction digest. Eighty-five patients with liver disease and/or suspected iron overload were genotyped using SSCP-CE, and all results were verified by conventional RFLP analysis. In summary, SSCP-CE proved to be a reliable, cost-effective, sensitive and rapid method for genotyping HFE mutations. This method will further facilitate high-throughput genetic screening using capillary array electrophoretic devices.
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Grauwinkel K, Jamros G, Ohrndorf P, Seegers S. [Occupational disorders of nursing personnel. 4. Nurses are particularly stressed during night shift]. Pflege Z 1996; 49:264-6. [PMID: 8715970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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10
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Grauwinkel K, Jamros G, Ohrndorf P, Seegers S. [Occupational disease in nursing personnel. Psychological stress in increasing for nurses]. Pflege Z 1996; 49:184-7. [PMID: 8715351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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11
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Grauwinkel K, Jamros G, Ohrndorf P, Seegers S. [Occupational diseases in nurses. 2. Back and neck pains are foremost]. Pflege Z 1996; 49:108-11. [PMID: 8715407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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12
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Grauwinkel K, Jamros G, Ohrndorf P, Seegers S. [Occupational diseases of nursing personnel. 1. Working conditions: there is a cleft between the law and reality]. Pflege Z 1996; 49:40-3. [PMID: 8696617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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13
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Bauer R, Imhof A, Pscherer A, Kopp H, Moser M, Seegers S, Kerscher M, Tainsky MA, Hofstaedter F, Buettner R. The genomic structure of the human AP-2 transcription factor. Nucleic Acids Res 1994; 22:1413-20. [PMID: 8190633 PMCID: PMC307999 DOI: 10.1093/nar/22.8.1413] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
The transcription factor AP-2 is encoded by a gene located on chromosome 6 near the HLA locus. Here we describe the genomic organization of the AP-2 gene including an initial characterization of the promoter. We have mapped two mRNA initiation sites, the entire exon-intron structure and located two polyadenylation sites. The mature AP-2 mRNA is spliced from 7 exons distributed over a region of 18 kb genomic DNA. A recently cloned inhibitory AP-2 protein is generated by alternative usage of a C-terminal exon. The proline-rich transactivation motif is encoded by a single exon within the N-terminal region in contrast to the complex DNA binding and dimerization motif which involves amino acid residues located on four different exons. The sites of mRNA initiation are located 220 and 271 bases upstream from the ATG translation start site. Although the promoter contains no canonical sequence motifs for basal transcription factors, such as TATA-, CCAAT- or SP-1 boxes, it mediates cell-type-specific expression of a CAT reporter gene in PA-1 human teratocarcinoma cells and is inactive in murine F9 teratocarcinoma cells. We demonstrate that the promoter of the AP-2 gene is subject to positive autoregulation by its own gene product. A consensus AP-2 binding site is located at position -622 with respect to the ATG. This site binds specifically to bacterially expressed AP-2 as well as to multiple proteins, including AP-2, present in PA-1 and HeLa cell nuclear extracts. A partial AP-2 promoter fragment including the AP-2 consensus binding site is approximately 5-fold transactivated by cotransfection of an AP-2 expression plasmid.
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Affiliation(s)
- R Bauer
- Department of Pathology, University of Regensburg Medical School, Germany
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Moser M, Pscherer A, Bauer R, Imhof A, Seegers S, Kerscher M, Buettner R. The complete murine cDNA sequence of the transcription factor AP-2. Nucleic Acids Res 1993; 21:4844. [PMID: 8233835 PMCID: PMC331516 DOI: 10.1093/nar/21.20.4844] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Affiliation(s)
- M Moser
- Department of Pathology, University of Regensburg Medical School, Germany
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15
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Le-Ruppert K, Masters JR, Knuechel R, Seegers S, Tainsky MA, Hofstaedter F, Buettner R. The effect of retinoic acid on chemosensitivity of PA-1 human teratocarcinoma cells and its modulation by an activated N-ras oncogene. Int J Cancer 1992; 51:646-51. [PMID: 1376303 DOI: 10.1002/ijc.2910510423] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Combination of chemotherapeutic drugs with agents that induce cell differentiation is a possible means of improving cancer chemotherapy. To explore this approach we used 4 cell lines established from the human teratocarcinoma-derived cell line PA-1; 2 retinoic acid (RA)-sensitive lines compared to 2 RA-resistant lines transformed by an activated N-ras oncogene. Equal numbers of colony-forming cells were exposed for 72 hr to 10(-6)M RA and subsequently to a range of concentrations of cisplatinum, etoposide or bleomycin. Enhanced cytotoxicity of cisplatin and etoposide (3- to 5-fold) was observed in the N-ras-transformed cell lines compared to the non-transformed lines. Treatment with RA caused an increase in the cytotoxicity of all 3 drugs to the 2 RA-sensitive cell lines. In contrast, a reduction of cytotoxicity was observed in the 2 N-ras-transformed lines. Our results indicate that sensitivity to cytotoxic agents can be increased by RA in RA-sensitive cells, but the opposite effect is seen in N-ras transformed, RA-resistant cells. Therefore, a general rationale for combination therapy with RA and cytotoxic drugs cannot be inferred.
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Affiliation(s)
- K Le-Ruppert
- Institute of Pathology, University of Regensburg, Germany
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Tibbels CK, Seegers S. Neuroleptic malignant-like syndrome: case report. Tex Med 1988; 84:40-3. [PMID: 3406898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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