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Herold S, Sisson G. “You Can't Tell This Story Without Abortion”: TV Creators on the Intention and Development of Abortion Stories on Their Shows. Contraception 2022. [DOI: 10.1016/j.contraception.2022.03.015] [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: 11/16/2022]
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Kirchberg J, Blum SFU, Pablik J, Herold S, Hoffmann RT, Baretton G, Weitz J. [Preoperative diagnostics and typing of abdominal soft tissue sarcomas]. Chirurg 2021; 93:5-15. [PMID: 34757436 DOI: 10.1007/s00104-021-01528-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/30/2021] [Indexed: 01/12/2023]
Abstract
BACKGROUND Abdominal sarcomas are a heterogeneous group of rare soft tissue tumors and can be localized intraperitoneally or retroperitoneally. A pretherapeutic differentiated subtyping is essential for planning an individual, multimodal treatment concept in an interdisciplinary team of experts. OBJECTIVE The central aspects of histology acquisition, imaging diagnostics and (molecular) pathological subtyping of abdominal soft tissue sarcomas are described in detail. MATERIAL AND METHODS Imaging and pathological diagnostics are depicted based on the German S3 guidelines on adult soft tissue sarcomas, a current literature search and personal experiences at the Sarcoma Center at the National Center for Tumor Diseases in Dresden (NCT/UCC). RESULTS Preoperative imaging and (molecular) pathological subtyping of abdominal soft tissue sarcomas place high demands on surgeons, radiologists and pathologists. Genome analyses of sarcomas have the potential to identify points of attack for individualized treatment options. The limitations of resectability can only be assessed by experienced sarcoma surgeons at specialized centers. CONCLUSION The treatment of abdominal soft tissue sarcomas at an experienced center is associated with a better prognosis. Even at the first suspicion of an abdominal sarcoma, a referral to an experienced center should be made in order to guarantee optimal expertise in diagnostics and treatment.
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Affiliation(s)
- J Kirchberg
- Klinik und Poliklinik für Viszeral‑, Thorax- und Gefäßchirurgie, Universitätsklinikum Carl Gustav Carus an der Technischen Universität Dresden, Fetscherstraße 74, 01307, Dresden, Deutschland. .,Sarkomzentrum Dresden am Nationalen Centrum für Tumorerkrankungen Dresden (NCT/UCC): Deutsches Krebsforschungszentrum (DKFZ), Universitätsklinikum Carl Gustav Carus Dresden, Medizinische Fakultät der Technischen Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Fetscherstraße 74, 01307, Dresden, Deutschland.
| | - S F U Blum
- Sarkomzentrum Dresden am Nationalen Centrum für Tumorerkrankungen Dresden (NCT/UCC): Deutsches Krebsforschungszentrum (DKFZ), Universitätsklinikum Carl Gustav Carus Dresden, Medizinische Fakultät der Technischen Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Fetscherstraße 74, 01307, Dresden, Deutschland.,Institut und Poliklinik für Diagnostische und Interventionelle Radiologie, Universitätsklinikum Carl Gustav Carus an der Technischen Universität Dresden, Fetscherstraße 74, 01307, Dresden, Deutschland
| | - J Pablik
- Sarkomzentrum Dresden am Nationalen Centrum für Tumorerkrankungen Dresden (NCT/UCC): Deutsches Krebsforschungszentrum (DKFZ), Universitätsklinikum Carl Gustav Carus Dresden, Medizinische Fakultät der Technischen Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Fetscherstraße 74, 01307, Dresden, Deutschland.,Institut für Pathologie, Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307, Dresden, Deutschland
| | - S Herold
- Sarkomzentrum Dresden am Nationalen Centrum für Tumorerkrankungen Dresden (NCT/UCC): Deutsches Krebsforschungszentrum (DKFZ), Universitätsklinikum Carl Gustav Carus Dresden, Medizinische Fakultät der Technischen Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Fetscherstraße 74, 01307, Dresden, Deutschland.,Institut für Pathologie, Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307, Dresden, Deutschland
| | - R T Hoffmann
- Sarkomzentrum Dresden am Nationalen Centrum für Tumorerkrankungen Dresden (NCT/UCC): Deutsches Krebsforschungszentrum (DKFZ), Universitätsklinikum Carl Gustav Carus Dresden, Medizinische Fakultät der Technischen Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Fetscherstraße 74, 01307, Dresden, Deutschland.,Institut und Poliklinik für Diagnostische und Interventionelle Radiologie, Universitätsklinikum Carl Gustav Carus an der Technischen Universität Dresden, Fetscherstraße 74, 01307, Dresden, Deutschland
| | - G Baretton
- Sarkomzentrum Dresden am Nationalen Centrum für Tumorerkrankungen Dresden (NCT/UCC): Deutsches Krebsforschungszentrum (DKFZ), Universitätsklinikum Carl Gustav Carus Dresden, Medizinische Fakultät der Technischen Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Fetscherstraße 74, 01307, Dresden, Deutschland.,Institut für Pathologie, Universitätsklinikum Carl Gustav Carus, Technische Universität Dresden, Fetscherstraße 74, 01307, Dresden, Deutschland
| | - J Weitz
- Klinik und Poliklinik für Viszeral‑, Thorax- und Gefäßchirurgie, Universitätsklinikum Carl Gustav Carus an der Technischen Universität Dresden, Fetscherstraße 74, 01307, Dresden, Deutschland.,Sarkomzentrum Dresden am Nationalen Centrum für Tumorerkrankungen Dresden (NCT/UCC): Deutsches Krebsforschungszentrum (DKFZ), Universitätsklinikum Carl Gustav Carus Dresden, Medizinische Fakultät der Technischen Universität Dresden, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Fetscherstraße 74, 01307, Dresden, Deutschland
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Weichert W, Bartels S, Baretton G, Braicu E, Demes M, Endris V, Herold S, Heukamp L, Hummel M, Lehmann U, Merkelbach-Bruse S, Pfarr N, Rad R, Sehouli J, Siemanowski J, Stenzinger A, von Schwarzenberg K, Vollbrecht C, Wild P, Zocholl D. 758P Concordance between multiple HRD assays is substantial in high-grade ovarian cancer. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1200] [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] Open
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Sisson G, Herold S. Examining antiabortion worldviews through advocacy films. Contraception 2018. [DOI: 10.1016/j.contraception.2018.07.045] [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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Selvakumar B, Wilhelm J, Wolff D, Seeger W, Lohmeyer J, Herold S. Functional phenotype and role of resident and recruited bone marrow derived exudate macrophages in influenza virus-induced lung injury and repair. Int J Infect Dis 2018. [DOI: 10.1016/j.ijid.2018.04.3522] [Citation(s) in RCA: 1] [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: 11/15/2022] Open
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Herold S, Sockel K, Sayehli C, Herbst R, Dührsen U, Oelschlägel U, Böttner A, Hindahl H, Kullmer J, Helas S, Sauer M, Mohr B, Mies A, Bornhäuser M, Ehninger G, Röllig C, Thiede C, Platzbecker U. Evolution of NPM1-negative therapy-related myelodysplastic syndromes following curative treatment of NPM1-mutant AML. Leukemia 2017; 31:2247-2251. [PMID: 28690314 DOI: 10.1038/leu.2017.217] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- S Herold
- Universitätsklinikum Carl Gustav Carus der TU Dresden, Medizinische Klinik und Poliklinik I, Dresden, Germany
| | - K Sockel
- Universitätsklinikum Carl Gustav Carus der TU Dresden, Medizinische Klinik und Poliklinik I, Dresden, Germany
| | - C Sayehli
- Klinik für Hämatologie und Onkologie, Universitätsklinikum Würzburg, Würzburg, Germany
| | - R Herbst
- Klinikum Chemnitz gGmbH, Klinik für Hämatologie/Onkologie, Chemnitz, Germany
| | - U Dührsen
- Universitätsklinikum Essen, Klinik für Hämatologie Essen, Essen, Germany
| | - U Oelschlägel
- Universitätsklinikum Carl Gustav Carus der TU Dresden, Medizinische Klinik und Poliklinik I, Dresden, Germany
| | - A Böttner
- Universitätsklinikum Carl Gustav Carus der TU Dresden, Medizinische Klinik und Poliklinik I, Dresden, Germany
| | - H Hindahl
- Klinik für Hämatologie und Onkologie, St Johannes Hospital, Dortmund, Germany
| | - J Kullmer
- DIAKO Bremen, Klinik für Hämatologie/Onkologie, Bremen, Germany
| | - S Helas
- Universitätsklinikum Carl Gustav Carus der TU Dresden, Medizinische Klinik und Poliklinik I, Dresden, Germany
| | - M Sauer
- Universitätsklinikum Carl Gustav Carus der TU Dresden, Medizinische Klinik und Poliklinik I, Dresden, Germany
| | - B Mohr
- Universitätsklinikum Carl Gustav Carus der TU Dresden, Medizinische Klinik und Poliklinik I, Dresden, Germany
| | - A Mies
- Universitätsklinikum Carl Gustav Carus der TU Dresden, Medizinische Klinik und Poliklinik I, Dresden, Germany
| | - M Bornhäuser
- Universitätsklinikum Carl Gustav Carus der TU Dresden, Medizinische Klinik und Poliklinik I, Dresden, Germany
| | - G Ehninger
- Universitätsklinikum Carl Gustav Carus der TU Dresden, Medizinische Klinik und Poliklinik I, Dresden, Germany
| | - C Röllig
- Universitätsklinikum Carl Gustav Carus der TU Dresden, Medizinische Klinik und Poliklinik I, Dresden, Germany
| | - C Thiede
- Universitätsklinikum Carl Gustav Carus der TU Dresden, Medizinische Klinik und Poliklinik I, Dresden, Germany.,German Cancer Consortium (DKTK), Dresden
| | - U Platzbecker
- Universitätsklinikum Carl Gustav Carus der TU Dresden, Medizinische Klinik und Poliklinik I, Dresden, Germany.,German Cancer Consortium (DKTK), Dresden
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Herold S, Kuhn M, Bonin MV, Stange T, Platzbecker U, Radke J, Lange T, Sockel K, Gutsche K, Schetelig J, Röllig C, Schuster C, Roeder I, Dahl A, Mohr B, Serve H, Brandts C, Ehninger G, Bornhäuser M, Thiede C. Donor cell leukemia: evidence for multiple preleukemic clones and parallel long term clonal evolution in donor and recipient. Leukemia 2017; 31:1637-1640. [PMID: 28348390 DOI: 10.1038/leu.2017.104] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- S Herold
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - M Kuhn
- Institut für Medizinische Informatik und Biometrie, TU Dresden, Dresden, Germany
| | - M V Bonin
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany.,Deutsches Konsortium für Translationale Krebsforschung (DKTK), Dresden, Germany.,Deutsches Krebsforschungszentrum (DKFZ), Heidelberg, Germany
| | - T Stange
- Institut für Medizinische Informatik und Biometrie, TU Dresden, Dresden, Germany
| | - U Platzbecker
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - J Radke
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - T Lange
- Abteilung Hämatologie, Universitätsklinikum Leipzig AöR, Leipzig, Germany
| | - K Sockel
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - K Gutsche
- Klinik für Hämatologie und Onkologie, Städtisches Klinikum Görlitz, Görlitz, Germany
| | - J Schetelig
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - C Röllig
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - C Schuster
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - I Roeder
- Institut für Medizinische Informatik und Biometrie, TU Dresden, Dresden, Germany
| | - A Dahl
- Deep Sequencing Core Facility, Center for Regenerative Medicine, TU Dresden, Dresden, Germany
| | - B Mohr
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - H Serve
- Medizinische Klinik II, Klinikum der Johann-Wolfgang-Goethe-Universität, Frankfurt am Main, Germany
| | - C Brandts
- Medizinische Klinik II, Klinikum der Johann-Wolfgang-Goethe-Universität, Frankfurt am Main, Germany
| | - G Ehninger
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - M Bornhäuser
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
| | - C Thiede
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus der TU Dresden, Dresden, Germany
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Falter T, Schmitt V, Boeschen S, Herold S, Hefner G, Weyer V, Auer CV, Lämmle B, Rossmann H, Scharrer I, Lackner K. Prevalence of Depression in patients with diagnosis of thrombotic thrombocytopenic purpura (TTP). Pharmacopsychiatry 2015. [DOI: 10.1055/s-0035-1557951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Falter T, Schmitt V, Boeschen S, Herold S, Hefner G, Weyer V, Auer CV, Lämmle B, Rossmann H, Scharrer I, Lackner K. Prevalence of depression in patients with diagnosis of thrombotic thrombocytopenic purpura (TTP). Pharmacopsychiatry 2015. [DOI: 10.1055/s-0035-1558011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Oelschlaegel U, Alexander Röhnert M, Mohr B, Sockel K, Herold S, Ehninger G, Bornhäuser M, Thiede C, Platzbecker U. Clonal architecture of del(5q) myelodysplastic syndromes: aberrant CD5 or CD7 expression within the myeloid progenitor compartment defines a subset with high clonal burden. Leukemia 2015; 30:517-20. [PMID: 26104659 PMCID: PMC4740451 DOI: 10.1038/leu.2015.158] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- U Oelschlaegel
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus, Dresden, Germany
| | - M Alexander Röhnert
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus, Dresden, Germany
| | - B Mohr
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus, Dresden, Germany
| | - K Sockel
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus, Dresden, Germany
| | - S Herold
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus, Dresden, Germany
| | - G Ehninger
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus, Dresden, Germany
| | - M Bornhäuser
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus, Dresden, Germany
| | - C Thiede
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus, Dresden, Germany
| | - U Platzbecker
- Medizinische Klinik und Poliklinik I, Universitätsklinikum Carl Gustav Carus, Dresden, Germany
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MacKenzie B, Al Alam D, Henneke I, El Agha E, Quantius J, Chao CM, Wilhelm J, Königshoff M, Herold S, Klepetko W, Günther A, Seeger W, Bellusci S. Endogenous Fgfr2b ligands are dispensable for fibrosis formation and resolution in bleomycin-injured mice. Pneumologie 2014. [DOI: 10.1055/s-0034-1376802] [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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Quantius J, Schmoldt C, Hoegner K, El Agha E, Seeger W, Lohmeyer J, Bellusci S, Herold S. Influenza virus impairs fibroblast growth factor receptor 2b dependent epithelial regeneration from a distal airway epithelial progenitor pool. Pneumologie 2014. [DOI: 10.1055/s-0034-1376793] [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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Jankauskaite L, Schmoldt C, Lohmeyer J, Herold S. Therapeutic potential of murine bone marrow derived mesenchymal stem cells in influenza virus-induced pneumonia. Pneumologie 2014. [DOI: 10.1055/s-0034-1376794] [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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Bedenić B, Schmidt H, Herold S, Monaco M, Plecko V, Kalenić S, Katíc S, Skrlin-Subić J. Epidemic and Endemic Spread ofKlebsiella pneumoniaeProducing SHV-5 Beta-Lactamase in Dubrava University Hospital, Zagreb, Croatia. J Chemother 2013; 17:367-75. [PMID: 16167514 DOI: 10.1179/joc.2005.17.4.367] [Citation(s) in RCA: 10] [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: 10/31/2022]
Abstract
Plasmid-encoded resistance to broad-spectrum cephalosporins and aztreonam is becoming a widespread phenomenon in clinical medicine. These antibiotics are inactivated by an array of different extended-spectrum beta-lactamases (ESBLs) which have evolved by point mutations of parental TEM or SHV beta-lactamases. In a previous study conducted during 1994-1995, SHV-2, SHV-2a and SHV-5 beta-lactamases were found among Klebsiella pneumoniae isolates in Dubrava University Hospital. High prevalence of ESBLs among K. pneumoniae strains in this hospital (20%) required further investigation. In this investigation, beta-lactamases from 42 K. pneumoniae strains collected in 1997 and 15 in 2004 from Dubrava University Hospital, were characterized in order to study the evolution of plasmid-encoded resistance to extended-spectrum cephalosporins and aztreonam in that hospital over a prolonged study period. Susceptibility to antibiotics was determined by disk-diffusion and broth microdilution method. beta-lactamases were characterized by isoelectric focusing, determination of hydrolysis of beta-lactam substrates, polymerase chain reaction and sequencing of bla(SHV) genes. All K. pneumoniae strains and their Escherichia coli transconjugants produced beta-lactamase with an isoelectric point of 8.2. Based on sequencing of bla(SHV) genes enzymes of all transconjugants were identified as SHV-5 beta-lactamase which conferred on the producing isolates high level of ceftazidime and aztreonam resistance. In this study, an outbreak of nosocomial infections caused by SHV-5 producing K. pneumoniae was described in 1997 which evolved to endemic spread of SHV-5 producing K. pneumoniae due to multiple plasmid transfer in the Dubrava University Hospital. The strains from 1997 and 2004 were not clonally related. Hospital hygiene measures should be applied in order to control the spread of epidemic strains through the hospital wards and the consumption of the broad-spectrum cephalosporins needs to be restricted to reduce the selection pressure which enables the proliferation of ESBL producers in hospital.
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Affiliation(s)
- B Bedenić
- Department of Microbiology, "A. Stampar" School of Public Health, Medical School, University of Zagreb, Zagreb, Croatia.
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Schmall A, Herold S, Vipotnik N, Al-tamari HM, Pullamsetti SS, Grimminger F, Seeger W, Savai R. Functional and molecular characterization of macrophage-tumor cell communication. Pneumologie 2012. [DOI: 10.1055/s-0032-1315531] [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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Becker C, Gabrielli NM, Budinger S, Seeger W, Lohmeyer J, Morty R, Herold S. Influenza-virus infection impacts on alveolar edema clearance: role of virus- and host factors in regulation of alveolar epithelial cell ENaC and Na,K-ATPase expression. Pneumologie 2012. [DOI: 10.1055/s-0032-1315459] [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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Nowaczyk P, Herold S, Kim P, Schmitz A, Polom K, Murawa P, Morgenthaler N, Zabel M, Luecke K, Murawa D. 61 Functionalized and Structured Medical Wire as a Device for In-vivo Isolation of Circulating Tumor Cells in Breast Cancer Patients. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)70129-6] [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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Heyden A, Tomasi T, Zeni N, Herold S, Nowaczyk P, Schmitz A, Krahn T, Zabel M, Murawa D, Luecke K. PP 45 In vivo isolation of circulating tumor cells. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)72660-0] [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: 10/15/2022]
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Herold S, Shafiei Tabar T, Janßen H, Högner K, Seeger W, Steinmüller M, Lohmeyer J. Exudate macrophages attenuate lung injury by the release of IL-1 receptor antagonist in gram-negative pneumonia. Pneumologie 2011. [DOI: 10.1055/s-0031-1272254] [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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Roth P, Gehron J, Mayer K, Lohmeyer J, Walmrath D, Böning A, Herold S. Multidisciplinary approach to critically ill adults with novel Influenza A(H1N1) 2009: A case series. Thorac Cardiovasc Surg 2011. [DOI: 10.1055/s-0030-1269300] [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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Herold S, Jagasia R, Merz K, Wassmer K, Lie DC. CREB signalling regulates early survival, neuronal gene expression and morphological development in adult subventricular zone neurogenesis. Mol Cell Neurosci 2010; 46:79-88. [PMID: 20801218 DOI: 10.1016/j.mcn.2010.08.008] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2010] [Revised: 07/30/2010] [Accepted: 08/15/2010] [Indexed: 01/22/2023] Open
Abstract
Neural stem cells in the subventricular zone (SVZ) of the lateral ventricles give rise to new interneurons of the olfactory bulb (OB) throughout life. SVZ/OB neurogenesis is influenced by olfactory network activity, which modulates the survival of new neurons during their integration into the OB network. Previous work suggested that such activity-dependent survival is regulated via the CREB signalling pathway. Curiously, CREB signalling is already active during the early developmental stages of adult SVZ/OB neurogenesis. To investigate the role of cell autonomous CREB signalling during early stages of adult SVZ/OB neurogenesis, we ablated CREB-pathway activity in the SVZ/OB neurogenic lineage using a retroviral strategy. Surprisingly, loss of CREB signalling resulted in increased cell death and loss of expression of the neurogenic transcription factor Pax 6, and of a subset of neuronal proteins in migrating neurons of the RMS. Moreover, post-migratory neurons in the OB displayed impaired dendritic development. These results demonstrate an essential role for CREB signalling in maturation of newborn neurons in the OB and uncover a novel role for CREB signalling in the survival and maintenance of neuronal gene expression during the early stages of SVZ/OB neurogenesis.
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Affiliation(s)
- S Herold
- Research Group Adult Neurogenesis and Neural Stem Cells, Institute of Developmental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Munich-Neuherberg, Germany
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Herold S, Heine T, King R. Automatische probabilistische Phänomenerkennung in biologischen Versuchen. CHEM-ING-TECH 2010. [DOI: 10.1002/cite.201050240] [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: 11/08/2022]
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Högner K, Cakarova L, Pleschka S, Seeger W, Lohmeyer J, Herold S. TRAIL induction in lung macrophages is IFN-ß-dependent and results in alveolar epithelial apoptosis in IV pneumonia. Pneumologie 2010. [DOI: 10.1055/s-0029-1247921] [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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Herold S, Heine T, King R. An automated approach to build process models by detecting biological phenomena in (fed-)batch experiments. ACTA ACUST UNITED AC 2010. [DOI: 10.3182/20100707-3-be-2012.0012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Vesely H, Mauritz W, Ammann G, Herold S, Marczell A. Plasmaaustausch bei akutem Abdomen mit Polyorganversagen - ein Fallbericht. Anasthesiol Intensivmed Notfallmed Schmerzther 2008. [DOI: 10.1055/s-2007-1002536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Auber B, Burfeind P, Herold S, Schoner K, Simson G, Rauskolb R, Rehder H. A disease causing deletion of 29 base pairs in intron 15 in the MKS1 gene is highly associated with the campomelic variant of the Meckel-Gruber syndrome. Clin Genet 2007; 72:454-9. [DOI: 10.1111/j.1399-0004.2007.00880.x] [Citation(s) in RCA: 18] [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: 11/30/2022]
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Abstract
BACKGROUND The aim of our pilot study was to evaluate effects of an interdisciplinary training program for adult psoriasis patients after six months follow-up. SUBJECTS AND METHODS Eleven patients with psoriasis participated in an interdisciplinary training program over a weekend taught by dermatologists, psychologists/psychiatrists, and dieticians. Six months follow-up was performed with a questionnaire. RESULTS The knowledge acquired improved the cooperation with the treating dermatologist (7 of 11), the patients' ability to cope with their disease (11 of 11), and their ability to improving their health status (8 of 11). Their general well-being was increased (9 of 11) and they could better care for their skin disease because they better understood the need for care (9 of 11), and could better judge the best approach for various levels of disease activity (8 of 11). CONCLUSION These data show early benefits and suggest such a longer lasting effect of this type of psoriasis training and prevention program. Further studies with larger samples and control parameters will have to examine if these results can be confirmed.
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Affiliation(s)
- B Bonnekoh
- Klinik und Poliklinik für Dermatologie und Venerologie, Otto-von-Guericke-Universität Magdeburg, Leipziger Strasse 20, 39120 , Magdeburg, Deutschland.
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Boehm D, Laccone F, Burfeind P, Herold S, Schubert C, Zoll B, Männer J, Pauer HU, Bartels I. Prenatal diagnosis of a large de novo terminal deletion of chromosome 11q. Prenat Diagn 2006; 26:286-90. [PMID: 16506277 DOI: 10.1002/pd.1408] [Citation(s) in RCA: 13] [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: 11/08/2022]
Abstract
OBJECTIVE To describe the prenatal phenotype of the 11q deletion syndrome (Jacobsen syndrome) and present the molecular characterization of the deletion in the case presented. CASE Ultrasound at 18 and 20 weeks of gestation, on a 34-year-old woman who presented for amniocentesis, revealed slow movements, oligohydramnios and dilatation of the cerebral ventricles in the fetus. Maternal and paternal ages were 34 and 38 years, respectively. RESULTS Prenatal karyotyping of cultured amniotic fluid cells revealed an 11q terminal deletion, 46,XX,del(11)(q23) (Jacobsen syndrome). Real-time quantitative PCR analysis was used to identify and map the breakpoint physically to a 45-kb region located 14.5 Mb from the 11q telomere. Polymorphic DNA marker analysis showed that DNA sequences on the paternally derived chromosome are deleted. At autopsy, facial dysmorphism without major malformations was recorded. Examination of the internal organs disclosed the following abnormalities: a Meckels' diverticulum of 4-mm length, adhesion between the gall bladder and the transverse colon, and bilaterally bilobed lungs without further situs anomalies. CONCLUSION Our case demonstrates significant phenotypic variability of Jacobsen syndrome at midtrimester pregnancy; the syndrome may be manifested at this stage only by mild to moderate ventriculomegaly of the brain.
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Affiliation(s)
- D Boehm
- Institute of Human Genetics, University of Goettingen, Goettingen, Germany
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Morty R, Vadász I, Olschewski A, Herold S, Seeger W, Eickelberg O. TGF-beta inhibiert die Rückresorption der Alveolarflüssigkeit: existiert ein Zusammenhang mit ARDS? Pneumologie 2006. [DOI: 10.1055/s-2006-933868] [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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Ahlbrecht K, Schmitz J, Mitnacht-Kraus R, Haberberger R, Herold S, Breier G, Seeger W, Voswinckel R. Stadien-abhängige epitheliale Expression des VEGF-Rezeptors 2 während der Lungenentwicklung der Maus. Pneumologie 2006. [DOI: 10.1055/s-2006-933761] [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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Ahlbrecht K, Schmitz J, Mitnacht-Kraus R, Haberberger RV, Herold S, Breier G, Seeger W, Voswinckel R. Stadien-abhängige epitheliale Expression des VEGF-Rezeptors 2 während der Lungenentwicklung der Maus. Pneumologie 2006. [DOI: 10.1055/s-2005-925501] [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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Herold S, Pleschka S, Seeger W, Lohmeyer J, Maus U. Die inflammatorische Response Influenza A Virus-infizierter mononukleärer Phagozyten und Alveolarepithelzellen. Pneumologie 2005. [DOI: 10.1055/s-2005-862736] [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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Abstract
Nitrogen monoxide (nitric oxide) generated endogenously has a variety of different properties. Among others it regulates blood pressure and transmission of nerve impulses, and has been shown to exert specific toxic effects, but also, paradoxically, to protect against various toxic substances. Recent studies suggest that NO* can serve as an antioxidant of the highly oxidizing ferryl myoglobin (MbFe(IV)=O), which has been proposed to be at least in part responsible for the oxidative damage caused by the reperfusion of ischemic tissues. In the present work we have determined the rate constant for the reaction between MbFe(IV)=O and NO* [(17.9+/-0.5)x10(6)M(-1)s(-1) at pH 7.5 and 20 degrees C] and we have shown that this reaction proceeds via the intermediate nitrito-metmyoglobin complex MbFe(III)ONO. Our results imply that this reaction is very likely to take place in vivo and might indeed represent a detoxifying pathway for both MbFe(IV)=O as well as NO*. Moreover, we have found that the rate of reaction of MbFe(IV)=O with nitrite is significantly lower (16+/-1 M(-1) s(-1) at pH 7.5 and 20 degrees C). Thus, this reaction probably plays a role only when NO* has been consumed completely and large concentrations of nitrite are still present. In contrast to the protecting role of NO*, the reaction with nitrite generates nitrogen dioxide which can contribute to tyrosine nitration. Indeed, we have demonstrated that nitrite can nitrate added tyrosine in the presence of iron(III) myoglobin and hydrogen peroxide.
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Affiliation(s)
- S Herold
- Laboratory of Inorganic Chemistry, ETH Zürich, Switzerland.
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Affiliation(s)
- S Herold
- Laboratory of Inorganic Chemistry, Universitätsstrasse 6, ETH Zürich, CH-8092 Zürich, Switzerland Institute for Molecular Science Myodaiji, Okazaki 444-8585, Japan.
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Abstract
The second-order rate constants for the reactions between nitrogen monoxide and oxymyoglobin or oxyhemoglobin, determined by stopped-flow spectroscopy, increase with increasing pH. At pH 7.0 the rates are (43.6 +/- 0.5) x 10(6) M(-1) x s(-1) for oxymyoglobin and (89 +/- 3) x 10(6) M(-1) x s(-1) for oxyhemoglobin (per heme), whereas at pH 9.5 they are (97 +/- 3) x 10(6) M(-1) x s(-1) and (144 +/- 3) x 10(6) M(-1) x s(-1), respectively. The rate constants for the reaction between oxyhemoglobin and NO* depend neither on the association grade of the protein (dimer/tetramer) nor on the concentration of the phosphate buffer (100-1 mM). The nitrogen monoxide-mediated oxidations of oxymyoglobin and oxyhemoglobin proceed via intermediate peroxynitrito complexes which were characterized by rapid scan UV/vis spectroscopy. The two complexes MbFe(III)OONO and HbFe(III)OONO display very similar spectra with absorption maxima around 500 and 635 nm. These species can be observed at alkaline pH but rapidly decay to the met-form of the proteins under neutral or acidic conditions. The rate of decay of MbFe(III)OONO increases with decreasing pH and is significantly larger than those of the analogous complexes of the two subunits of hemoglobin. No free peroxynitrite is formed during these reactions, and nitrate is formed quantitatively, at both pH 7.0 and 9.0. This result indicates that, as confirmed from protein analysis after reacting the proteins with NO* for 10 times, when peroxynitrite is coordinated to the heme of myoglobin or hemoglobin it rapidly isomerizes to nitrate without nitrating the globins in physiologically significant amounts.
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Affiliation(s)
- S Herold
- Laboratorium für Anorganische Chemie, Eidgenössische Technische Hochschule, Universitätsstrasse 6, CH-8092 Zürich, Switzerland.
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Maus U, Herold S, Muth H, Maus R, Ermert L, Ermert M, Weissmann N, Rosseau S, Seeger W, Grimminger F, Lohmeyer J. Monocytes recruited into the alveolar air space of mice show a monocytic phenotype but upregulate CD14. Am J Physiol Lung Cell Mol Physiol 2001; 280:L58-68. [PMID: 11133495 DOI: 10.1152/ajplung.2001.280.1.l58] [Citation(s) in RCA: 105] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The evaluation of monocytes recruited into the alveolar space under both physiological and inflammatory conditions is hampered by difficulties in discriminating these cells from resident alveolar macrophages (rAMs). Using the intravenous injected fluorescent dye PKH26, which accumulated in rAMs without labeling blood leukocytes, we developed a technique that permits the identification, isolation, and functional analysis of monocytes recruited into lung alveoli of mice. Alveolar deposition of murine JE, the homologue of human monocyte chemoattractant protein (MCP)-1 (JE/MCP-1), in mice provoked an alveolar influx of monocytes that were recovered by bronchoalveolar lavage and separated from PKH26-stained rAMs by flow cytometry. Alveolar recruited monocytes showed a blood monocytic phenotype as assessed by cell surface expression of F4/80, CD11a, CD11b, CD18, CD49d, and CD62L. In contrast, CD14 was markedly upregulated on alveolar recruited monocytes together with increased tumor necrosis factor-alpha message, discriminating this monocyte population from peripheral blood monocytes and rAMs. Thus monocytes recruited into the alveolar air space of mice in response to JE/MCP-1 keep phenotypic features of blood monocytes but upregulate CD14 and are "primed" for enhanced responsiveness to endotoxin with increased cytokine expression.
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Affiliation(s)
- U Maus
- Department of Internal Medicine, Justus-Liebig-University, Giessen 35392, Germany.
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Daiber A, Herold S, Schöneich C, Namgaladze D, Peterson JA, Ullrich V. Nitration and inactivation of cytochrome P450BM-3 by peroxynitrite. Stopped-flow measurements prove ferryl intermediates. Eur J Biochem 2000; 267:6729-39. [PMID: 11082183 DOI: 10.1046/j.1432-1033.2000.01768.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Peroxynitrite (PN) is likely to be generated in vivo from nitric oxide and superoxide. We have previously shown that prostacyclin synthase, a heme-thiolate enzyme essential for regulation of vascular tone, is nitrated and inactivated by submicromolar concentrations of PN [Zou, M.-H. & Ullrich, V. (1996) FEBS Lett. 382, 101-104] and we have studied the effect of heme proteins on the PN-mediated nitration of phenolic compounds in model systems [Mehl, M., Daiber, A. & Ullrich, V. (1999) Nitric Oxide: Biol. Chem. 2, 259-269]. In the present work we show that bolus additions of PN or PN-generating systems, such as SIN-1, can induce the nitration of P450BM-3 (wild-type and F87Y variant), for which we suggest an autocatalytic mechanism. HPLC and MS-analysis revealed that the wild-type protein is selectively nitrated at Y334, which was found at the entrance of a water channel connected to the active site iron center. In the F87Y variant, Y87, which is directly located at the active site, was nitrated in addition to Y334. According to Western blots stained with a nitrotyrosine antibody, this nitration started at 0.5 microM of PN and was half-maximal between 100 and 150 microM of PN. Furthermore, PN caused inactivation of the P450BM-3 monooxygenase as well as the reductase activity with an IC50 value of 2-3 microM. As two thiol residues/protein molecule were oxidized by PN and the inactivation was prevented by GSH or dithiothreitol, but not by uric acid (a powerful inhibitor of the nitration), our data strongly indicate that the inactivation is due to thiol oxidation at the reductase domain rather then to nitration of Y residues. Stopped-flow data presented here support our previous hypothesis that ferryl-species are involved as intermediates during the reactions of P450 enzymes with PN.
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Affiliation(s)
- A Daiber
- Department of Biology, Universität Konstanz, Germany
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Martinez GR, Di Mascio P, Bonini MG, Augusto O, Briviba K, Sies H, Maurer P, Röthlisberger U, Herold S, Koppenol WH. Peroxynitrite does not decompose to singlet oxygen ((1)Delta (g)O(2)) andnitroxyl (NO(-)). Proc Natl Acad Sci U S A 2000; 97:10307-12. [PMID: 10973492 PMCID: PMC27019 DOI: 10.1073/pnas.190256897] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2000] [Indexed: 11/18/2022] Open
Abstract
According to Khan et al. [Khan, A. U., Kovacic, D., Kolbanovskiy, A., Desai, M., Frenkel, K. & Geacintov, N. E. (2000) Proc. Natl. Acad. Sci. USA 97, 2984-2989], peroxynitrite (ONOO(-)) decomposes after protonation to singlet oxygen ((1)Delta(g)O(2)) and singlet oxonitrate (nitroxyl, (1)NO(-)) in high yield. They claimed to have observed nitrosyl hemoglobin from the reaction of NO(-) with methemoglobin; however, contamination with hydrogen peroxide gave rise to ferryl hemoglobin, the spectrum of which was mistakenly assigned to nitrosyl hemoglobin. We have carried out UV-visible and EPR experiments with methemoglobin and hydrogen peroxide-free peroxynitrite and find that no NO(-) is formed. With this peroxynitrite preparation, no light emission from singlet oxygen at 1270 nm is observed, nor is singlet oxygen chemically trapped; however, singlet oxygen was trapped when hydrogen peroxide was also present, as previously described [Di Mascio, P., Bechara, E. J. H., Medeiros, M. H. G., Briviba, K. & Sies, H. (1994) FEBS Lett. 355, 287-289]. Quantum mechanical and thermodynamic calculations show that formation of the postulated intermediate, a cyclic form of peroxynitrous acid (trioxazetidine), and the products (1)NO(-) and (1)Delta(g)O(2) requires Gibbs energies of ca. +415 kJ .mol(-1) and ca. +180 kJ.mol(-1), respectively. Our results show that the results of Khan et al. are best explained by interference from contaminating hydrogen peroxide left from the synthesis of peroxynitrite.
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Affiliation(s)
- G R Martinez
- Departamento de Bioquimica, Instituto de Quimica, Universidade de São Paulo, CP 26077, CEP 05513-970, São Paulo, SP, Brazil
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Maus UA, Herold S, Schlingensiepen KH, Schlingensiepen R, Dormayr T, Rosseau S, Maus R, Seeger W, Lohmeyer J. Antisense oligomers for selective suppression of MCP-1 synthesis in human pulmonary endothelial cells. Antisense Nucleic Acid Drug Dev 2000; 10:185-93. [PMID: 10905555 DOI: 10.1089/oli.1.2000.10.185] [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: 11/12/2022]
Abstract
Endothelial synthesis of the C-C chemokine monocyte chemotactic protein-1 (MCP-1) has been implicated in the regulation of monocyte recruitment for extravascular pools under both physiologic and inflammatory conditions. We designed and characterized five antisense phosphorothioate oligodeoxynucleotides (PS-ODN) targeting MCP-1 secretion by human pulmonary artery endothelial cells (HPAEC) and pulmonary microvascular endothelial cells (HMVEC-L). The most effective PS-ODN (MCP-1 AS 2) dose-dependently suppressed the secretion of MCP-1 but not the secretion of the C-X-C chemokine interleukin-8 (IL-8) in both HPAEC and HMVEC-L in the nanomolar concentration range. Mismatch controls bearing 2 or 4 bp substitutions showed markedly reduced inhibitory capacity. MCP-1 mRNA levels were not affected even at the highest PS-ODN doses employed (ribonuclease protection assay), suggesting a translational arrest of MCP-1 production. Accordingly, PS-ODN exhibited no nonspecific side effects on immediate-early gene regulation of the transcription factor nuclear factor-kappaB (NF-kappaB), as analyzed by gel shift assays. Antisense pretreatment of HPAEC reduced the monocyte chemotactic bioactivity liberated from tumor necrosis factor-alpha (TNF-alpha)-activated endothelial cells (EC) and reduced the TNF-alpha-induced transendothelial monocyte migration. We conclude that nanomolar concentrations of specific antisense oligodeoxynucleotides effectively inhibit human endothelial MCP-1 synthesis and may thus provide a rational approach to modulate monocyte recruitment under inflammatory conditions.
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Affiliation(s)
- U A Maus
- Department of Internal Medicine, Justus-Liebig-University, Giessen, Germany
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Abstract
Kinetic studies of the peroxynitrite-mediated oxidations of oxymyoglobin (MbFeO(2)) and oxyhemoglobin (HbFeO(2)) showed that the mechanisms of these reactions are more complex than what had previously been reported; both reactions proceed in two steps. For myoglobin, we found that the small amount of deoxymyoglobin (MbFe(II)) which is in equilibrium with MbFeO(2) is first oxidized by peroxynitrous acid to ferryl myoglobin (MbFe(IV)=O). Then, in the second step, MbFe(IV)=O is reduced by peroxynitrous acid to metmyoglobin (metMb). The second-order rate constant values obtained at pH 7.3 and 20 degrees C for the two steps are (5.4 +/- 0.2) x 10(4) and (2.2 +/- 0.1) x 10(4) M(-)(1) s(-)(1), respectively. Analogous studies with hemoglobin suggest that its reaction with peroxynitrite follows the same mechanism. In this case, the second-order rate constant values measured at pH 7.0 and 20 degrees C for the two steps are (8.8 +/- 0.4) x 10(4) and (9.4 +/- 0.7) x 10(4) M(-)(1) s(-)(1), respectively. A possible mechanism in the absence as well as in the presence of CO(2) and the relevance of these reactions in vivo are discussed.
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Affiliation(s)
- M Exner
- Laboratorium für Anorganische Chemie, Eidgenössische Technische Hochschule, Universitätsstrasse 6, CH-8092 Zürich, Switzerland
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Abstract
Pyridoxalated hemoglobin polyoxyethylene conjugate (PHP), a modified human-derived hemoglobin, is currently in clinical trials as a nitrogen monoxide scavenger for the treatment of shock. Stopped-flow spectroscopy studies of the reaction between nitrogen monoxide and PHP indicate that at pH 7 the second-order rate constant is (88 +/- 3) x 10(6) M(-1) s(-1), a value very similar to that for the unmodified human hemoglobin. At alkaline pH the reaction proceeds via the intermediate peroxynitrito complex PHP-Fe(III)OONO, which rapidly decomposes to nitrate and the iron(III) form of PHP. The rate of decay of PHP-Fe(III)OONO increases significantly with decreasing pH such that it does not accumulate in concentrations large enough to be observed spectroscopically under neutral or acidic conditions. Ion chromatographic analysis of the nitrogen-containing products of the NO(*)-mediated reaction of PHP shows that nitrate is formed quantitatively at both pH 7 and pH 9.
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Affiliation(s)
- S Herold
- Laboratorium für Anorganische Chemie, Eidgenössische Technische Hochschule, Universitätsstrasse 6, Zürich, CH-8092, Switzerland.
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Abstract
We have reported that low levels of peroxynitrite (PN) can cause inactivation of the heme-thiolate protein prostacyclin (PGI2)-synthase by nitration of a tyrosine residue. To prove that iron catalysis is involved we studied the interaction of PN with microperoxidase and P450nor, a heme-thiolate protein of known structure. Spectral and kinetic analyses allow to conclude on a ferryl nitrogen dioxide complex as an intermediate which decomposes in the presence of an excess of PN under formation of dioxygen, nitrite, and nitrate. This occurs in a catalytic cycle which was more efficient with P450nor than with microperoxidase. If phenol was added to the reaction mixtures of PN and the ferric complexes the ratio of hydroxylated to nitrated phenols decreased compared to the metal-free system. Phenol competed with the formation of dioxygen indicating that the ferryl intermediate was involved in both pathways. One therefore can postulate that the ferryl complex reacts with phenol to give the phenoxyradical which is nitrated in the presence of nitrogen dioxide but does not give hydroxylated products as with metal-free PN. Alternately, the ferryl nitrogen dioxide complex can oxidize a second PN molecule to the radical, *OONO, which can decompose to dioxygen and NO. The latter forms N2O3, with the remaining *NO2 radical. A third pathway consists in the isomerization to nitrate which also is catalyzed by the heme proteins since the ratio of nitrite/nitrate does not change significantly during the catalytic reaction with excess of PN. Our data explain the mechanism of nitration of PGI2-synthase, suggest a role of P450nor as a PN scavenger, and favor heme-thiolate complexes for trapping PN.
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Affiliation(s)
- M Mehl
- Faculty of Biology, University of Konstanz, Germany
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Abstract
Stopped-flow spectroscopy studies of the nitrogen monoxide mediated oxidation of oxyhemoglobin in the pH range 5-10.5 show that an intermediate can be characterized at alkaline pH. The rate of decay of this species to methemoglobin increases significantly with decreasing pH such that it does not accumulate in quantities large enough to be observed under neutral or acidic conditions. Kinetic and spectroscopic properties of this intermediate support its assignment as a methemoglobin peroxynitrite complex.
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Affiliation(s)
- S Herold
- Laboratorium für Anorganische Chemie, Eidgenössische Technische Hochschule, Zürich, Switzerland.
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Abstract
Stopped-flow spectroscopy studies of the nitrogen monoxide mediated oxidation of oxyhemoglobin in the pH range 5-10.5 show that an intermediate can be characterized at alkaline pH. The rate of decay of this species to methemoglobin increases significantly with decreasing pH such that it does not accumulate in quantities large enough to be observed under neutral or acidic conditions. Kinetic and spectroscopic properties of this intermediate support its assignment as a methemoglobin peroxynitrite complex.
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Affiliation(s)
- S Herold
- Laboratorium für Anorganische Chemie, Eidgenössische Technische Hochschule, Zürich, Switzerland.
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Frith CD, Friston KJ, Herold S, Silbersweig D, Fletcher P, Cahill C, Dolan RJ, Frackowiak RS, Liddle PF. Regional brain activity in chronic schizophrenic patients during the performance of a verbal fluency task. Br J Psychiatry 1995; 167:343-9. [PMID: 7496643 DOI: 10.1192/bjp.167.3.343] [Citation(s) in RCA: 309] [Impact Index Per Article: 10.7] [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: 01/25/2023]
Abstract
BACKGROUND This study examined the pattern of cerebral blood flow observed in chronic schizophrenic patients while they performed a paced verbal fluency task. Such tasks engage a distributed brain system associated with willed action. Since willed action is impaired in many chronic schizophrenic patients we hypothesised that task performance would be associated with an abnormal pattern of blood flow. METHOD Positron emission tomography (PET) was applied to 18 chronic schizophrenic patients stratified into three groups on the basis of verbal fluency performance and current symptoms. Regional cerebral blood flow (rCBF) was measured while the patients performed (a) verbal fluency, (b) word categorisation, and (c) word repetition. Results were compared with six normal controls matched for age, sex and premorbid IQ. Analysis was restricted to six brain regions previously identified in studies of normal volunteers. RESULTS In five brain areas, including the left dorsolateral prefrontal cortex, the patients showed the same pattern of activation as control subjects. However, in the left superior temporal cortex, all patient groups failed to show the normal decrease in blood flow when verbal fluency was compared with word repetition. CONCLUSION These observations suggest that (a) chronic schizophrenic patients can show a normal magnitude of frontal activation when matched for performance with controls, and (b) they fail to show the expected reductions of activity in the superior temporal cortex. This latter result may reflect abnormal functional connectivity between frontal and temporal cortex.
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Andersen M, Herold S. [WHO--health from the start of life]. Sygeplejersken 1994; 94:26-7. [PMID: 7809861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Bartels I, Hoppe-Sievert B, Bockel B, Herold S, Caesar J. Adjustment formulae for maternal serum alpha-fetoprotein, human chorionic gonadotropin, and unconjugated oestriol to maternal weight and smoking. Prenat Diagn 1993; 13:123-30. [PMID: 7681977 DOI: 10.1002/pd.1970130207] [Citation(s) in RCA: 45] [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] [Indexed: 01/26/2023]
Abstract
Serum levels of alpha-fetoprotein (AFP), human chorionic gonadotropin (hCG), and unconjugated oestriol (uE3) were measured in serum samples of 4131 non-smoking and 1018 smoking women during the second trimester of pregnancy. The levels of all three analytes decreased with increasing body weight. The AFP median was significantly increased in smokers in a dose-response association; hCG decreased by 21 per cent and uE3 decreased by 3 per cent in smokers in a non-dose-related fashion. Regression functions for adjustment of serum levels for weight and smoking should be considered in risk estimation for Down syndrome in order to give a woman's individual risk more precisely.
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Affiliation(s)
- I Bartels
- Institute of Human Genetics, University of Göttingen, Germany
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Leenders KL, Perani D, Lammertsma AA, Heather JD, Buckingham P, Healy MJ, Gibbs JM, Wise RJ, Hatazawa J, Herold S. Cerebral blood flow, blood volume and oxygen utilization. Normal values and effect of age. Brain 1990; 113 ( Pt 1):27-47. [PMID: 2302536 DOI: 10.1093/brain/113.1.27] [Citation(s) in RCA: 768] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Regional cerebral blood flow (CBF), oxygen extraction ratio (OER), oxygen utilization (CMRO2) and blood volume (CBV) were measured in a group of 34 healthy volunteers (age range 22-82 yrs) using the 15O steady-state inhalation method and positron emission tomography. Between subjects CBF correlated positively with CMRO2, although the interindividual variability of the measured values was large. OER was not dependent on CMRO2, but highly negatively correlated with CBF. CBV correlated positively with CBF. When considering the values of all the regions of interest within a single subject, a strict coupling between CMRO2 and CBF, and between CBF and CBV was found, while OER was constant and independent of CBF and CMRO2. In 'pure' grey and white matter regions CMRO2, CBF and CBV decreased with age approximately 0.50% per year. In other regions the decline was less evident, most likely due to partial volume effects. OER did not change or showed a slight increase with age (maximum in the grey matter region 0.35%/yr). The results suggest diminished neuronal firing or decreased dendritic synaptic density with age.
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Affiliation(s)
- K L Leenders
- MRC Cyclotron Unit, Hammersmith Hospital, London, UK
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Abstract
Regional cerebral blood flow, oxygen consumption and glucose consumption were measured by positron emission tomography in six young autistic men. No significant differences were found between patients and normal controls for any of the physiological variables. The results do not substantiate the previous finding of glucose hypermetabolism in autism; the likely reasons for the variance in findings are discussed.
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Affiliation(s)
- S Herold
- MRC Cyclotron Unit, Hammersmith Hospital, London
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Frackowiak RS, Herold S, Petty RK, Morgan-Hughes JA. The cerebral metabolism of glucose and oxygen measured with positron tomography in patients with mitochondrial diseases. Brain 1988; 111 ( Pt 5):1009-24. [PMID: 3263167 DOI: 10.1093/brain/111.5.1009] [Citation(s) in RCA: 66] [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: 01/05/2023] Open
Abstract
Cerebral oxygen and glucose metabolism have been studied in 8 patients with biochemically defined mitochondrial myopathies and 7 normal control subjects using positron emission tomography. Four patients had myopathy alone and 4 had predominantly central nervous system (CNS) disease. Cerebral oxygen and glucose metabolism were measured concurrently in the two groups of patients with 15O, 11C and 18F labelled tracers and positron emission tomography (PET). Patients with major CNS disease showed an uncoupling of glucose and oxygen metabolism when compared with patients without cerebral disease and normal subjects. The mean ratio between oxygen and glucose utilization was 3.8 moles of oxygen per mole of glucose in patients with CNS disease, compared with 5.6 for controls and 6.4 for patients with myopathy alone. The altered stoichiometry in CNS cases indicates aerobic glycolysis to lactate and/or other intermediate metabolites. Patients with major CNS disease showed a 50% reduction in cerebral oxygen utilization compared with cerebrally unaffected patients and normal subjects. These findings indicate that in patients with a mitochondrial encephalopathy the defect identified in skeletal muscle is also expressed in the brain.
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