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Berlin P, Göggelmann L, Herzog S, Pedrosa Carrasco AJ, Hauck J, Timmesfeld N, Kruse J, Rief W, Riera Knorrenschild J, von Blanckenburg P, Seifart C. Cancer advance care planning: development of a screening tool. BMJ Support Palliat Care 2023:spcare-2022-003965. [PMID: 37979957 DOI: 10.1136/spcare-2022-003965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 09/05/2023] [Indexed: 11/20/2023]
Abstract
OBJECTIVES Advance care discussions are a useful communication tools for medical preferences and beneficial for shared decision-making processes in hospital settings. The present study developed the first screening tool for need for advance care planning (ACP). METHODS In phase 1 (n=92), items were evaluated using feasibility analysis and item reduction. In phase 2 (n=201), reduced screening items were analysed for predictive value of need for ACP. Statistical analysis included receiver-operating characteristics analysis (area under the curve>0.80), optimal cut-off based on sensitivity and specificity, interpretation of OR and construct validity using correlation with death anxiety, communication avoidance within families and trust based on the relationship with the treating physician. RESULTS Participants in both phases were approximately 60 years old with non-curative prognosis. After item reduction, predictive values of four possible items with good item difficulty and discrimination were compared for mild, moderate and great levels of death anxiety. A two-item combination of I am burdened by thoughts of an unfavourable course of the disease and I am burdened by the feeling of being ill-prepared for the end of life showed best prediction of death anxiety and communication avoidance. Clinical cut-off at sum-score ≥6 was of high sensitivity (95%) and specificity (81%). Previous use of social support and readiness for ACP was related to higher chance of interest in ACP. CONCLUSION Screening for need of ACP is possible with two objective items and one subjective item. Positive screening therefore indicates when to offer ACP discussions and provides routine estimation of ACP need in clinical practice.
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Affiliation(s)
- Pia Berlin
- Department of Clinical Psychology and Psychotherapy, Philipps-University Marburg, Marburg, Germany
| | - Lena Göggelmann
- Research Group Medical Ethics, Philipps-University Marburg, Marburg, Germany
| | - Svenja Herzog
- Research Group Medical Ethics, Philipps-University Marburg, Marburg, Germany
| | - Anna J Pedrosa Carrasco
- Research Group Medical Ethics, Philipps-University Marburg, Marburg, Germany
- Department of Neurology, University Hospital Giessen and Marburg, Marburg, Germany
| | - Johannes Hauck
- Department of Clinical Psychology and Psychotherapy, Philipps-University Marburg, Marburg, Germany
| | - Nina Timmesfeld
- Department of Medical Informatics, Biometry and Epidemiology, Ruhr University Bochum, Bochum, Germany
| | - Johannes Kruse
- Clinic for Psychosomatic Medicine and Psychotherapy, University Hospital Giessen and Marburg, Giessen, Germany
| | - Winfried Rief
- Department of Clinical Psychology and Psychotherapy, Philipps-University Marburg, Marburg, Germany
| | - Jorge Riera Knorrenschild
- Department of Haematology, Oncology and Immunology, University Hospital of Giessen and Marburg, Marburg, Germany
| | - Pia von Blanckenburg
- Department of Clinical Psychology and Psychotherapy, Philipps-University Marburg, Marburg, Germany
| | - Carola Seifart
- Research Group Medical Ethics, Philipps-University Marburg, Marburg, Germany
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Stenger R, Herzog S, Kottlarz I, Rüchardt B, Luther S, Wörgötter F, Parlitz U. Reconstructing in-depth activity for chaotic 3D spatiotemporal excitable media models based on surface data. Chaos 2023; 33:013134. [PMID: 36725654 DOI: 10.1063/5.0126824] [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] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Accepted: 12/22/2022] [Indexed: 06/18/2023]
Abstract
Motivated by potential applications in cardiac research, we consider the task of reconstructing the dynamics within a spatiotemporal chaotic 3D excitable medium from partial observations at the surface. Three artificial neural network methods (a spatiotemporal convolutional long-short-term-memory, an autoencoder, and a diffusion model based on the U-Net architecture) are trained to predict the dynamics in deeper layers of a cube from observational data at the surface using data generated by the Barkley model on a 3D domain. The results show that despite the high-dimensional chaotic dynamics of this system, such cross-prediction is possible, but non-trivial and as expected, its quality decreases with increasing prediction depth.
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Affiliation(s)
- R Stenger
- Max Planck Institute for Dynamics and Self-Organization, Am Fassberg 17, 37077 Göttingen, Germany
| | - S Herzog
- Max Planck Institute for Dynamics and Self-Organization, Am Fassberg 17, 37077 Göttingen, Germany
| | - I Kottlarz
- Max Planck Institute for Dynamics and Self-Organization, Am Fassberg 17, 37077 Göttingen, Germany
| | - B Rüchardt
- Max Planck Institute for Dynamics and Self-Organization, Am Fassberg 17, 37077 Göttingen, Germany
| | - S Luther
- Max Planck Institute for Dynamics and Self-Organization, Am Fassberg 17, 37077 Göttingen, Germany
| | - F Wörgötter
- Department for Computational Neuroscience, Third Institute of Physics-Biophysics, University of Göttingen, 37077 Göttingen, Germany
| | - U Parlitz
- Max Planck Institute for Dynamics and Self-Organization, Am Fassberg 17, 37077 Göttingen, Germany
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3
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Pedrosa Carrasco AJ, Koch M, Machacek T, Genz A, Herzog S, Riera Knorrenschild J, von Blanckenburg P, Seifart C. ' It was like taking an inner bath': A qualitative evaluation of a collaborative advance care planning-approach. Palliat Med 2021; 35:1897-1907. [PMID: 34479460 PMCID: PMC8637376 DOI: 10.1177/02692163211043209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Impaired readiness may hinder purposeful advance care planning in cancer patients. To reduce barriers to participation in end-of-life decision-making, a collaborative intervention was developed combining a psycho-oncological approach of dignity-based and cognitive-behavioural interventions, followed by a standardised advance care planning-process. AIM To evaluate the novel collaborative advance care planning-approach by synthetising cancer patient and carer perspectives on communicational and relational effects. DESIGN As a sub-project of a mixed-methods evaluation study, we conducted an inductive content analysis of qualitative interviews with advanced cancer patients and caregivers to deeply explore the focused impact of a collaborative advance care planning-approach on communication and relationship dynamics. SETTING/PARTICIPANTS Twelve patients with advanced cancer and 13 carers who participated in a collaborative advance care planning-intervention. RESULTS The collaborative advance care planning-approach was consistently evaluated positively by participants. Transcriptions of the semi-structured interviews were coded, analysed and merged under three main themes concerning communicational and relationship dynamics: action readiness, content readiness and impact on future communication and relationship. CONCLUSIONS The novel intervention served to foster individual readiness - including action and content readiness - for advance care planning-discussions by addressing highly individualised barriers to participation, as well as specific end-of-life issues. In addition, societal readiness could be promoted. Although the brief psycho-oncological intervention could not fully meet the needs of all participants, it can be used to develop individual psychotherapeutic strategies to improve different facets of readiness. The collaborative advance care planning-approach might require more time and human resources, but could pioneer successful advance care planning.
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Affiliation(s)
| | - Martin Koch
- Study Group Ethics in Medicine, Philipps-University Marburg, Marburg, Germany.,Department of Medicine, Haematology Division, University Hospital Carl Gustav Carus, Dresden, Germany
| | - Teresa Machacek
- Study Group Ethics in Medicine, Philipps-University Marburg, Marburg, Germany
| | - Anna Genz
- Study Group Ethics in Medicine, Philipps-University Marburg, Marburg, Germany
| | - Svenja Herzog
- Study Group Ethics in Medicine, Philipps-University Marburg, Marburg, Germany
| | - Jorge Riera Knorrenschild
- Department of Haematology, Oncology and Immunology, University Hospital of Giessen and Marburg, Marburg, Germany
| | - Pia von Blanckenburg
- Department of Clinical Psychology and Psychotherapy, Philipps-University Marburg, Marburg, Germany
| | - Carola Seifart
- Study Group Ethics in Medicine, Philipps-University Marburg, Marburg, Germany
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4
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Herzog S, Wörgötter F, Parlitz U. Convolutional autoencoder and conditional random fields hybrid for predicting spatial-temporal chaos. Chaos 2019; 29:123116. [PMID: 31893655 DOI: 10.1063/1.5124926] [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] [Subscribe] [Scholar Register] [Received: 08/18/2019] [Accepted: 11/14/2019] [Indexed: 06/10/2023]
Abstract
We present an approach for data-driven prediction of high-dimensional chaotic time series generated by spatially-extended systems. The algorithm employs a convolutional autoencoder for dimension reduction and feature extraction combined with a probabilistic prediction scheme operating in the feature space, which consists of a conditional random field. The future evolution of the spatially-extended system is predicted using a feedback loop and iterated predictions. The excellent performance of this method is illustrated and evaluated using Lorenz-96 systems and Kuramoto-Sivashinsky equations of different size generating time series of different dimensionality and complexity.
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Affiliation(s)
- S Herzog
- Max Planck Institute for Dynamics and Self-Organization, Am Fassberg 17, 37077 Göttingen, Germany
| | - F Wörgötter
- Third Institute of Physics and Bernstein Center for Computational Neuroscience, University of Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
| | - U Parlitz
- Max Planck Institute for Dynamics and Self-Organization, Am Fassberg 17, 37077 Göttingen, Germany
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5
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Herden C, Herzog S, Piepenbring A, Lierz M. Die neuropathische Drüsenmagendilatation der Psittaziden und das aviäre Bornavirus als potenzielle Ursache. Tierarztl Prax Ausg K 2018. [DOI: 10.1055/s-0038-1622832] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Zusammenfassung
Gegenstand: Die neuropathische Drüsenmagendilatation der Psittaziden (PDD) ist eine bedeutende Erkrankung von Papageien, die stets letal endet. Sie tritt bei zahlreichen Papageienspezies auf und bedroht ganze Zuchtbestände, kommt bei anderen Vogelfamilien dagegen sehr selten vor. Die Ursache dieser Erkrankung war bislang unklar, obwohl schon lange eine Virusätiologie vermutet wurde. Kürzlich gelang der Nachweis eines neuen Virus (aviäres Bornavirus [ABV]) aus an PDD erkrankten Papageien, das seitdem als wahrscheinlichste Ursache gilt. Obwohl auch klinisch gesunde Papageien eine ABV-Infektion aufweisen können, zeigen verschiedene Studien einen Zusammenhang zwischen der Virusinfektion und der klinischen Erkrankung der PDD auf. Neben dem direkten Virusnachweis eignen sich auch serologische Methoden zum Infektionsnachweis. Schlussfolgerungen: Das aviäre Bornavirus ist zurzeit der wahrscheinlichste Kandidat als Erreger der PDD. Zuchtbestände und Neuzugänge sollten daher molekularbiologisch und serologisch auf eine Infektion mit ABV überprüft werden. Der diagnostische Wert des ABV-Infektionsnachweises zur Absicherung der klinischen Diagnose PDD muss in weiteren Studien genauer abgeklärt werden.
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6
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Kollmann M, Scheuchenegger A, Aldrian L, Herzog S, Mautner E, Lang U, Urlesberger B, Obermayer-Pietsch B, Raggam RB, Klaritsch P. Früher Haut zu Haut Kontakt nach Kaiserschnitt – eine randomisierte klinische Pilotstudie. Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0036-1582188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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7
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Wemheuer F, Wemheuer B, Kretzschmar D, Pfeiffer B, Herzog S, Daniel R, Vidal S. Impact of grassland management regimes on bacterial endophyte diversity differs with grass species. Lett Appl Microbiol 2016; 62:323-9. [DOI: 10.1111/lam.12551] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2015] [Revised: 01/02/2016] [Accepted: 01/19/2016] [Indexed: 11/30/2022]
Affiliation(s)
- F. Wemheuer
- Department of Crop Sciences; Georg-August-University Göttingen; Göttingen Germany
| | - B. Wemheuer
- Institute of Microbiology and Genetics; Georg-August-University Göttingen; Göttingen Germany
| | - D. Kretzschmar
- Department of Crop Sciences; Georg-August-University Göttingen; Göttingen Germany
| | - B. Pfeiffer
- Institute of Microbiology and Genetics; Georg-August-University Göttingen; Göttingen Germany
| | - S. Herzog
- Institute of Microbiology and Genetics; Georg-August-University Göttingen; Göttingen Germany
| | - R. Daniel
- Institute of Microbiology and Genetics; Georg-August-University Göttingen; Göttingen Germany
| | - S. Vidal
- Department of Crop Sciences; Georg-August-University Göttingen; Göttingen Germany
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8
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Maschmeyer P, Zimmermann J, Tran CL, Haftmann C, Rausch B, Riedel R, Herzog S, Chang HD, Radbruch A, Mashreghi MF. A7.19 Systemic inhibition of MIR-148A by antagomirs reduces CD4 +T helper cell numbers and alleviates inflammation in a preclinical model of transfer colitis. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-209124.150] [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: 11/03/2022]
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9
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Knackmuss U, Lindner SE, Aneichyk T, Kotkamp B, Knust Z, Villunger A, Herzog S. MAP3K11 is a tumor suppressor targeted by the oncomiR miR-125b in early B cells. Cell Death Differ 2016; 23:242-52. [PMID: 26138442 PMCID: PMC4678593 DOI: 10.1038/cdd.2015.87] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 05/05/2015] [Accepted: 05/22/2015] [Indexed: 12/19/2022] Open
Abstract
MicroRNAs (miRNAs) are a class of small, non-coding RNAs that posttranscriptionally regulate gene expression and thereby control most, if not all, biological processes. Aberrant miRNA expression has been linked to a variety of human diseases including cancer, but the underlying molecular mechanism often remains unclear. Here we have screened a miRNA expression library in a growth factor-dependent mouse pre-B-cell system to identify miRNAs with oncogenic activity. We show that miR-125b is sufficient to render pre-B cells growth factor independent and demonstrate that continuous expression of miR-125b is necessary to keep these cells in a transformed state. Mechanistically, we find that the expression of miR-125b protects against apoptosis induced by growth factor withdrawal, and that it blocks the differentiation of pre-B to immature B cells. In consequence, miR-125b-transformed cells maintain expression of their pre-B-cell receptor that provides signals for continuous proliferation and survival even in the absence of growth factor. Employing microarray analysis, we identified numerous targets of miR-125b, but only reconstitution of MAP3K11, a critical regulator of mitogen- and stress-activated kinase signaling, interferes with the cellular fitness of the transformed cells. Together, this indicates that MAP3K11 might function as an important tumor suppressor neutralized by oncomiR-125b in B-cell leukemia.
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Affiliation(s)
- U Knackmuss
- Centre for Biological Signalling Studies (bioss), Albert-Ludwigs-University Freiburg, Freiburg, Germany
| | - S E Lindner
- Division of Developmental Immunology, Biocenter Innsbruck, Medical University of Innsbruck, Innsbruck, Austria
| | - T Aneichyk
- Division of Molecular Pathophysiology, Biocenter Innsbruck, Medical University of Innsbruck, Innsbruck, Austria
| | - B Kotkamp
- Centre for Biological Signalling Studies (bioss), Albert-Ludwigs-University Freiburg, Freiburg, Germany
| | - Z Knust
- Centre for Biological Signalling Studies (bioss), Albert-Ludwigs-University Freiburg, Freiburg, Germany
| | - A Villunger
- Division of Developmental Immunology, Biocenter Innsbruck, Medical University of Innsbruck, Innsbruck, Austria
| | - S Herzog
- Centre for Biological Signalling Studies (bioss), Albert-Ludwigs-University Freiburg, Freiburg, Germany
- Division of Developmental Immunology, Biocenter Innsbruck, Medical University of Innsbruck, Innsbruck, Austria
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10
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Sochalska M, Ottina E, Tuzlak S, Herzog S, Herold M, Villunger A. Conditional knockdown of BCL2A1 reveals rate-limiting roles in BCR-dependent B-cell survival. Cell Death Differ 2015; 23:628-39. [PMID: 26450454 PMCID: PMC4986635 DOI: 10.1038/cdd.2015.130] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 08/19/2015] [Accepted: 08/27/2015] [Indexed: 11/09/2022] Open
Abstract
Bcl2 family proteins control mitochondrial apoptosis and its members exert critical cell type and differentiation stage-specific functions, acting as barriers against autoimmunity or transformation. Anti-apoptotic Bcl2a1/Bfl1/A1 is frequently deregulated in different types of blood cancers in humans but its physiological role is poorly understood as quadruplication of the Bcl2a1 gene locus in mice hampers conventional gene targeting strategies. Transgenic overexpression of A1, deletion of the A1-a paralogue or constitutive knockdown in the hematopoietic compartment of mice by RNAi suggested rate-limiting roles in lymphocyte development, granulopoiesis and mast cell activation. Here we report on the consequences of conditional knockdown of A1 protein expression using a reverse transactivator (rtTA)-driven approach that highlights a critical role for this Bcl2 family member in the maintenance of mature B-cell homeostasis. Furthermore, we define the A1/Bim (Bcl-2 interacting mediator of cell death) axis as a target of key kinases mediating B-cell receptor (BCR)-dependent survival signals, such as, spleen tyrosine kinase (Syk) and Brutons tyrosine kinase (Btk). As such, A1 represents a putative target for the treatment of B-cell-related pathologies depending on hyperactivation of BCR-emanating survival signals and loss of A1 expression accounts, in part, for the pro-apoptotic effects of Syk- or Btk inhibitors that rely on the ‘BH3-only' protein Bim for cell killing.
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Affiliation(s)
- M Sochalska
- Division of Developmental Immunology, Biocenter, Medical University Innsbruck, Innsbruck, Austria
| | - E Ottina
- Division of Developmental Immunology, Biocenter, Medical University Innsbruck, Innsbruck, Austria
| | - S Tuzlak
- Division of Developmental Immunology, Biocenter, Medical University Innsbruck, Innsbruck, Austria
| | - S Herzog
- Division of Developmental Immunology, Biocenter, Medical University Innsbruck, Innsbruck, Austria
| | - M Herold
- The Walter and Eliza Hall Institute for Medical Research, University of Melbourne, Parkville, Victoria, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
| | - A Villunger
- Division of Developmental Immunology, Biocenter, Medical University Innsbruck, Innsbruck, Austria
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Kollmann M, Scheuchenegger A, Aldrian L, Herzog S, Mautner E, Lang U, Urlesberger B, Obermayer-Pietsch B, Klaritsch P. Pilotstudie: „Sectio Bonding/Early Skin-To-Skin Contact (SSC) after Caesarean Section”. Geburtshilfe Frauenheilkd 2015. [DOI: 10.1055/s-0035-1555044] [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] Open
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12
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Kollmann M, Günther F, Schneider V, Herzog S, Martins W, Raine-Fenning N, Obermayer-Pietsch B, Lang U, Klaritsch P. Polyzystisches Ovar Syndrom und perinatales Outcome: Vergleich der unterschiedlichen diagnostischen Kriterien. Geburtshilfe Frauenheilkd 2015. [DOI: 10.1055/s-0035-1555037] [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] Open
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13
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Maschmeyer P, Zimmermann J, Tran C, Haftmann C, Rausch B, Riedel R, Herzog S, Chang HD, Radbruch A, Mashreghi MF. AB0038 Modulation of the Survival of Proinflammatory TH1 Lymphocytes by Stable Expression of MIR-148A Sponges in a Murine Model of Transfer Colitis. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.6389] [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: 11/04/2022]
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14
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Al-Ibadi B, Piepenbring A, Herzog S, Heffels-Redmann U, Enderlein D, Lierz M, Herden C. Comparison between Abv2 and Abv4 distribution patterns in experimentally infected cockatiels. J Comp Pathol 2015. [DOI: 10.1016/j.jcpa.2014.10.046] [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: 11/16/2022]
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Affiliation(s)
- B. Elschner
- Physikalisches Institut der Friedrich-Schiller-Universität Jena
| | - S. Herzog
- Institut für anorganische Chemie der Friedrich-Schiller-Universität Jena
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Abstract
The results of spectroscopic and paramagnetic resonance investigations show that the previously prepared substance with the empirical composition [VIdip3] J · ½ py is most presumably a mixed crystal of two similar compounds of bivalent and zero-valent vanadium. The ion [VIdip3] +⃝ exists only in solution and gives no paramagnetic resonance signal, which is understood on account of a low-lying singlet ground state.
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Affiliation(s)
- E. König
- Aus dem Institut für physikalische Chemie der Universität Frankfurt am Main und dem Mellon Institute, Pittsburgh 13, Pennsylvania, USA *
| | - H. Fischer
- aus dem Deutschen Kunststoffinstitut, Darmstadt
| | - S. Herzog
- aus dem Institut für anorganische Chemie der Universität Greifswald
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17
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Affiliation(s)
- S. Herzog
- Institut für Anorganische Chemie, Ernst-Moritz-Arndt-Universität, Greifswald
| | - E. Kubetschek
- Institut für Anorganische Chemie, Ernst-Moritz-Arndt-Universität, Greifswald
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18
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Affiliation(s)
- S. Herzog
- Institut für Anorganische Chemie der Universität Jena
| | | | - W. Schön
- Institut für Anorganische Chemie der Universität Jena
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Affiliation(s)
- S. Herzog
- Institut für Anorganische Chemie der Ernst Moritz Arndt-Universität, Greifswald
| | - H. Zühlke
- Institut für Anorganische Chemie der Ernst Moritz Arndt-Universität, Greifswald
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20
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Affiliation(s)
- S. Herzog
- Institut für Anorganische Chemie der Ernst-Moritz-Arndt-Universität Greifswald
| | - K. Gustav
- Institut für Anorganische Chemie der Ernst-Moritz-Arndt-Universität Greifswald
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Bechter K, Herzog S, Behr W, Schüttler R. Investigations of cerebrospinal fluid in Borna disease virus seropositive psychiatric patients. Eur Psychiatry 2012; 10:250-8. [PMID: 19698348 DOI: 10.1016/0924-9338(96)80302-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/1994] [Accepted: 12/13/1994] [Indexed: 11/16/2022] Open
Abstract
Borna disease virus (BDV) appears to cause meningoencephalitis and schizophreniform psychosis in sporadic cases according to earlier cerebrospinal fluid (CSF) inoculation experiments (Rott et al, 1991). However, CSF parameters in BDV seropositive psychiatric patients proved nearly all normal; only the most sensitive CSF/serum index I-BDV for intrathecally produced BDV specific IgG was pathologic in 10.5-29.0% (according to different methodological limits) of patients. An increase in sensitivity was attempted to detect specific IgG in CSF in a part of the cases by concentration. Concentration procedure does not significantly increase methodological bias according to a statistical analysis of the results. Our findings support the hypothesis that BDV may cause or contribute to the pathogenesis of a diagnostically broad pattern of psychiatric syndromes. The occurence of a spectrum of diagnoses is expected from non-specificity of psychiatric symptoms in other infectious diseases of the brain as well as from results in experimental Borna disease (BD) in animals, when a majority of the animals showed rather unspecific symptomatology due to slight, preferentially limbic encephalitis. Slight deficiencies from an earlier BDV infection could explain continuing symptoms in a part of the cases. Recurrences years after infection are well known in experimental and natural BD in animals. It remains open, whether this mechanism could play a more prominent role in a form of "symptomatic" cyclothymia and "symptomatic" schizophrenia, although the results of CSF investigations are more clear in BDV seropositive patients with major psychoses.
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Affiliation(s)
- K Bechter
- University of Ulm, Department of Psychiatry II and Department of Psychiatry of the Bezirkskrankenhaus Günzburg, Ludwig-Heilmeyer-Str 2, 89312 Günzburg, Germany
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Hussner J, Ameling S, Hammer E, Herzog S, Steil L, Schwebe M, Niessen J, Schroeder HWS, Kroemer HK, Ritter CA, Völker U, Bien S. Regulation of interferon-inducible proteins by doxorubicin via interferon γ-Janus tyrosine kinase-signal transducer and activator of transcription signaling in tumor cells. Mol Pharmacol 2012; 81:679-88. [PMID: 22323498 DOI: 10.1124/mol.111.075994] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Activation of the immune system is a way for host tissue to defend itself against tumor growth. Hence, treatment strategies that are based on immunomodulation are on the rise. Conventional cytostatic drugs such as the anthracycline doxorubicin can also activate immune cell functions of macrophages and natural killer cells. In addition, cytotoxicity of doxorubicin can be enhanced by combining this drug with the cytokine interferon-γ (IFNγ). Although doxorubicin is one of the most applied cytostatics, the molecular mechanisms of its immunomodulation ability have not been investigated thoroughly. In microarray analyses of HeLa cells, a set of 19 genes related to interferon signaling was significantly over-represented among genes regulated by doxorubicin exposure, including signal transducer and activator of transcription (STAT) 1 and 2, interferon regulatory factor 9, N-myc and STAT interactor, and caspase 1. Regulation of these genes by doxorubicin was verified with real-time polymerase chain reaction and immunoblotting. An enhanced secretion of IFNγ was observed when HeLa cells were exposed to doxorubicin compared with untreated cells. IFNγ-neutralizing antibodies and inhibition of Janus tyrosine kinase (JAK)-STAT signaling [aurintricarboxylic acid (ATA), (E)-2-cyano-3-(3,4-dihydrophenyl)-N-(phenylmethyl)-2-propenamide (AG490), STAT1 small interfering RNA] significantly abolished doxorubicin-stimulated expression of interferon signaling-related genes. Furthermore, inhibition of JAK-STAT signaling significantly reduced doxorubicin-induced caspase 3 activation and desensitized HeLa cells to doxorubicin cytotoxicity. In conclusion, we demonstrate that doxorubicin induces interferon-responsive genes via IFNγ-JAK-STAT1 signaling and that this pathway is relevant for doxorubicin's cytotoxicity in HeLa cells. Immunomodulation is a promising strategy in anticancer treatment, so this novel mode of action of doxorubicin may help to further improve the use of this drug among different types of anticancer treatment strategies.
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Affiliation(s)
- J Hussner
- Department of Pharmacology, Ernst-Moritz-Arndt University, Greifswald, Germany
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Heijne J, Althaus C, Herzog S, Tao G, Kent C, Low N. O1-S01.05 Estimating the rate of annual chlamydia screening uptake in US women. Br J Vener Dis 2011. [DOI: 10.1136/sextrans-2011-050109.5] [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: 11/04/2022]
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Heijne J, Althaus C, Herzog S, Low N. P1-S4.22 Impact of a hypothetical chlamydia vaccine on population prevalence: a mathematical Modelling Study. Br J Vener Dis 2011. [DOI: 10.1136/sextrans-2011-050108.166] [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: 11/04/2022]
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25
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Reßmeyer S, Herzog S, Enderlein D, Heffels-Redmann U, Lierz M, Herden C, Buchinder A. Distribution Patterns of Avian Bornavirus in Psittacine Birds Suffering From Proventricular Dilatation Disease. J Comp Pathol 2010. [DOI: 10.1016/j.jcpa.2010.09.043] [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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Herzog S, Pahl S, Kalies W. Ein Additionsprodukt des Kupfer(II)-acetats mit 2,2′-Dipyridyl: Di-acetato-2,2′-Dipyridyl-Kupfer(II). ACTA ACUST UNITED AC 2010. [DOI: 10.1002/zfch.19630031016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Herzog S, Oberender H, Pahl S. Ein neues Additionsprodukt des Chrom (II)-acetats: Diacetato-dipyridyl-bis-isopropylamin-chrom (II) [CrDipy(IPA)2(CH3COO)2]. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/zfch.19630030306] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [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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König E, Schläfer HL, Herzog S. Zur Methodik der Absorptions- und Reflexionsspektroskopie extrem sauerstoffempfindlicher Verbindungen. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/zfch.19640040303] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Herzog S, Oberender H. Über einen Neutralkomplex des Urans mit 2,2′-Dipyridyl: Tetrakis-2,2′-Dipyridyl-uran(O) U(Dipy)4 [1]. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/zfch.19630031111] [Citation(s) in RCA: 15] [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: 11/10/2022]
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Herzog S, Berger R. Über neue Additionsprodukte des Calciums und Strontiums mit 2, 2′-Dipyridyl: Tetrakis-2,2′-Dipyridyl-calcium, CaDipy4, und Tetrakis-2,2′-Dipyridyl-strontium, SrDipy4 [1]. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/zfch.19660061126] [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: 11/10/2022]
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Herzog S, Schuster R. Zur Darstellung elektronenreicher Verbindungen der Lanthanidenelemente Cer, Neodym und Ytterbium mit 2,2×-Dipyridyl. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/zfch.19670070125] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Herzog S, Berger R. Über ein Additionsprodukt des Bariums mit 2,2′-Dipyridyl: Tetrakis-2,2′-Dipyridyl-barium, BaDipy4 [1]. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/zfch.19650050709] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Abstract
The Dzyaloshinskii-Moriya interaction is shown to result in a canting of spins in a single-molecule transistor. We predict nonlinear transport signatures of this effect induced by spin-orbit coupling for the generic case of a molecular dimer. The conductance is calculated using a master equation and is found to exhibit a non-trivial dependence on the magnitude and direction of an external magnetic field. We show how three-terminal transport measurements allow for a determination of the coupling vector characterizing the Dzyaloshinskii-Moriya interaction. In particular, we show how its orientation, defining the intramolecular spin chirality, can be probed with ferromagnetic electrodes.
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Affiliation(s)
- S Herzog
- Institut für Theoretische Physik A, RWTH Aachen, D-52056 Aachen, Germany
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Jacobsen B, Algermissen D, Schaudien D, Venner M, Herzog S, Wentz E, Hewicker-Trautwein M, Baumgärtner W, Herden C. Borna disease in an adult alpaca stallion (Lama pacos). J Comp Pathol 2010; 143:203-8. [PMID: 20153871 DOI: 10.1016/j.jcpa.2010.01.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2009] [Revised: 11/02/2009] [Accepted: 01/06/2010] [Indexed: 11/29/2022]
Abstract
Borna disease (BD) was diagnosed in a 2-year-old male alpaca with a history of chronic suppressed sexual desire and acute stretching convulsions. Microscopical examination of the central nervous system revealed non-purulent meningoencephalitis with mononuclear perivascular cuffing. The diagnosis was confirmed by immunohistochemistry, in-situ hybridization, polymerase chain reaction (PCR) and sequencing of PCR products and alignment with known Borna disease virus sequences. Serological screening of the herd was performed. This is the first detailed report of naturally occurring BD in alpacas.
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Affiliation(s)
- B Jacobsen
- Department of Pathology, University of Veterinary Medicine Hannover, Hannover, Germany.
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