1
|
Scholz O, Huß E, Otter S, Herebian D, Hamacher A, Levy LM, Hristeva S, Sanz M, Ajani H, Puentes AR, Hoffmann T, Hogeback J, Unger A, Terheyden S, Reina do Fundo M, Dewidar B, Roden M, Lammert E. Protection of pancreatic islets from oxidative cell death by a peripherally-active morphinan with increased drug safety. Mol Metab 2023:101775. [PMID: 37451343 PMCID: PMC10403733 DOI: 10.1016/j.molmet.2023.101775] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 06/06/2023] [Accepted: 07/07/2023] [Indexed: 07/18/2023] Open
Abstract
OBJECTIVE Dextromethorphan (DXM) is a commonly used antitussive medication with positive effects in people with type 2 diabetes mellitus, since it increases glucose tolerance and protects pancreatic islets from cell death. However, its use as an antidiabetic medication is limited due to its central nervous side effects and potential use as a recreational drug. Therefore, we recently modified DXM chemically to reduce its blood-brain barrier (BBB) penetration and central side effects. However, our best compound interacted with the cardiac potassium channel hERG (human ether-à-go-go-related gene product) and the μ-opioid receptor (MOR). Thus, the goal of this study was to reduce the interaction of our compound with these targets, while maintaining its beneficial properties. METHODS Receptor and channel binding assays were conducted to evaluate the drug safety of our DXM derivative. Pancreatic islets were used to investigate the effect of the compound on insulin secretion and islet cell survival. Via liquor collection from the brain and a behavioral assay, we analyzed the BBB permeability. By performing intraperitoneal and oral glucose tolerance tests as well as pharmacokinetic analyses, the antidiabetic potential and elimination half-life were investigated, respectively. To analyze the islet cell-protective effect, we used fluorescence microscopy as well as flow cytometric analyses. RESULTS Here, we report the design and synthesis of an optimized, orally available BBB-impermeable DXM derivative with lesser binding to hERG and MOR than previous ones. We also show that the new compound substantially enhances glucose-stimulated insulin secretion (GSIS) from mouse and human islets and glucose tolerance in mice as well as protects pancreatic islets from cell death induced by reactive oxygen species and that it amplifies the effects of tirzepatide on GSIS and islet cell viability. CONCLUSIONS We succeeded to design and synthesize a novel morphinan derivative that is BBB-impermeable, glucose-lowering and islet cell-protective and has good drug safety despite its morphinan and imidazole structures.
Collapse
Affiliation(s)
- Okka Scholz
- Institute of Metabolic Physiology, Heinrich Heine University, D-40225 Düsseldorf, Germany; Institute for Vascular and Islet Cell Biology, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University, D-40225 Düsseldorf, Germany; German Center for Diabetes Research (DZD e.V.), Partner Düsseldorf, Neuherberg, D-85764 Neuherberg, Germany
| | - Elena Huß
- Institute of Metabolic Physiology, Heinrich Heine University, D-40225 Düsseldorf, Germany; Institute for Vascular and Islet Cell Biology, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University, D-40225 Düsseldorf, Germany; German Center for Diabetes Research (DZD e.V.), Partner Düsseldorf, Neuherberg, D-85764 Neuherberg, Germany
| | - Silke Otter
- Institute of Metabolic Physiology, Heinrich Heine University, D-40225 Düsseldorf, Germany; Institute for Vascular and Islet Cell Biology, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University, D-40225 Düsseldorf, Germany; German Center for Diabetes Research (DZD e.V.), Partner Düsseldorf, Neuherberg, D-85764 Neuherberg, Germany
| | - Diran Herebian
- Department of General Pediatrics, Neonatology and Pediatric Cardiology, Medical Faculty and University Hospital, Heinrich Heine University, D-40225 Düsseldorf, Germany
| | - Anna Hamacher
- Institute of Metabolic Physiology, Heinrich Heine University, D-40225 Düsseldorf, Germany; Institute for Vascular and Islet Cell Biology, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University, D-40225 Düsseldorf, Germany
| | | | | | - Miguel Sanz
- Taros Chemicals GmbH & Co. KG, D-44227 Dortmund, Germany
| | - Haresh Ajani
- Taros Chemicals GmbH & Co. KG, D-44227 Dortmund, Germany
| | | | | | - Jens Hogeback
- A&M Labor für Analytik und Metabolismusforschung Service GmbH, D-50126 Bergheim, Germany
| | - Anke Unger
- Lead Discovery Center GmbH & Co. KG, D-44227 Dortmund, Germany
| | | | - Michelle Reina do Fundo
- German Center for Diabetes Research (DZD e.V.), Partner Düsseldorf, Neuherberg, D-85764 Neuherberg, Germany; Institute for Clinical Diabetology, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University, D-40225 Düsseldorf, Germany
| | - Bedair Dewidar
- German Center for Diabetes Research (DZD e.V.), Partner Düsseldorf, Neuherberg, D-85764 Neuherberg, Germany; Institute for Clinical Diabetology, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University, D-40225 Düsseldorf, Germany
| | - Michael Roden
- German Center for Diabetes Research (DZD e.V.), Partner Düsseldorf, Neuherberg, D-85764 Neuherberg, Germany; Institute for Clinical Diabetology, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University, D-40225 Düsseldorf, Germany; Department of Endocrinology and Diabetology, Medical Faculty and University Hospital, Heinrich Heine University, D-40225 Düsseldorf, Germany
| | - Eckhard Lammert
- Institute of Metabolic Physiology, Heinrich Heine University, D-40225 Düsseldorf, Germany; Institute for Vascular and Islet Cell Biology, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University, D-40225 Düsseldorf, Germany; German Center for Diabetes Research (DZD e.V.), Partner Düsseldorf, Neuherberg, D-85764 Neuherberg, Germany.
| |
Collapse
|
2
|
Men J, Kolan SR, Massomi A, Hoffmann T, Schmidt J, Tsotsas E, Bück A. Formulation of Nanostructured Heteroaggregates by Fluidization Technologies. CHEM-ING-TECH 2023. [DOI: 10.1002/cite.202200139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Jialin Men
- Friedrich-Alexander-Universität Erlangen-Nürnberg Institute of Particle Technology Cauerstraße 4 91058 Erlangen Germany
| | - Subash Reddy Kolan
- Otto von Guericke University Magdeburg Thermal Process Engineering Universitätsplatz 2 39106 Magdeburg Germany
| | - Ali Massomi
- Friedrich-Alexander-Universität Erlangen-Nürnberg Institute of Particle Technology Cauerstraße 4 91058 Erlangen Germany
| | - Torsten Hoffmann
- Otto von Guericke University Magdeburg Thermal Process Engineering Universitätsplatz 2 39106 Magdeburg Germany
| | - Jochen Schmidt
- Friedrich-Alexander-Universität Erlangen-Nürnberg Institute of Particle Technology Cauerstraße 4 91058 Erlangen Germany
| | - Evangelos Tsotsas
- Otto von Guericke University Magdeburg Thermal Process Engineering Universitätsplatz 2 39106 Magdeburg Germany
| | - Andreas Bück
- Friedrich-Alexander-Universität Erlangen-Nürnberg Institute of Particle Technology Cauerstraße 4 91058 Erlangen Germany
| |
Collapse
|
3
|
Hoffmann T, Schenk M, Gnoth K, Ilse V, Brunner D, Rahfeld J, Schilling S, Schaeffer M. Exploring Combination Therapies in AD: Additive Effects of the QPCT Inhibitor Varoglutamstat and Aducanumab on Aβ Pathology and Biomarkers In Vivo. Alzheimers Dement 2022. [DOI: 10.1002/alz.069050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
| | - Mathias Schenk
- Fraunhofer Institute for Cell Therapy and Immunology Halle Germany
| | - Kathrin Gnoth
- Fraunhofer Institute for Cell Therapy and Immunology Halle Germany
- Anhalt University of Applied Sciences Köthen Germany
| | - Victoria Ilse
- Fraunhofer Institute for Cell Therapy and Immunology Halle Germany
| | | | | | - Stephan Schilling
- Fraunhofer Institute for Cell Therapy and Immunology Halle Germany
- Anhalt University of Applied Sciences Köthen Germany
| | | |
Collapse
|
4
|
Ryan M, Hoffmann T, Hofmann R, van Sluijs E. Incomplete reporting of activity behaviour interventions in school-based research: a systematic review of randomised controlled trials published 2015-2020. J Sci Med Sport 2022. [DOI: 10.1016/j.jsams.2022.09.099] [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: 11/17/2022]
|
5
|
Choquet H, Yin J, Kim Y, Hoffmann T, Saini S, Shringarpure S, Team, Jorgenson E, Asgari M. 501 Meta-analyses of genome-wide association studies in multiethnic cohorts identify risk loci associated with hidradenitis suppurativa. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
6
|
Malich L, Gühne F, Hoffmann T, Malich A, Oelzner P, Wolf G, Freesmeyer M, Pfeil A. AB1353 VESSEL AFFECTION AND THE INFLUENCE OF GLUCOCORTICOIDS ON 18F-FLUORODEOXYGLUCOSE POSITRON EMISSION TOMOGRAPHY/COMPUTED TOMOGRAPHY IN GIANT CELL ARTERITIS. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.2803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background18F-fluorodeoxyglucose positron emission tomography/computed tomography (PET/CT) represents one of the standard imaging modalities in the detection of giant cell arteritis (GCA). Detailed data regarding the vessel involvement in GCA are not available.ObjectivesThe aim of this study was to quantify arterial vessel involvement at the onset of GCA by 18F-FDG PET/CT and to verify the influence of glucocorticoid treatment on the diagnostic performance of 18F-FDG PET/CT.MethodsThis study included 60 patients (44 women and 16 men, mean age 72.8 ± 8.8 years) at the onset of GCA. All patients received a PET/CT. 44 patients were glucocorticoid naïve. 16 patient were treated with glucocorticoid (prednisone median dose 60 mg) 3.5 ± 4.4 days before the 18F-FDG PET/CT was performed. All 18F-FDG PET/CT scans were scored regarding the active inflammation of the large arteries.ResultsThe most affected arteries were the aorta ascendens (72 %), followed by truncus brachiocephalicus (62 %), acrus aortae (60 %), aorta descendens (60 %), left and right arteria sublcavia (60 % and 58 %). The aorta and their outgoing arteries presented an involvement in 39 GCA patients (89 %). A singular affection of the aorta was shown in 9 patients (20 %). glucocorticoid naïve patients (89 %) showed affected arteries more frequently than glucocorticoid treated patients (38 %).ConclusionThe study showed that the thoracic aorta (in particular aorta ascendens) is the most involved vascular segment in GCA. The use of glucocorticoids was associated with a marked decrease of vascular inflammation. Consequently, the imaging of the thoracic aorta should be included in the diagnostic procedure of GCA. 18F-FDG PET/CT should be performed without glucocorticoid treatment, if the clinical situation allowed this proceeding.Disclosure of InterestsLeander Malich: None declared, Falk Gühne: None declared, Tobias Hoffmann: None declared, Ansgar Malich: None declared, Peter Oelzner: None declared, Gunter Wolf: None declared, Martin Freesmeyer: None declared, Alexander Pfeil Grant/research support from: This study is a part of the Investigator Initiated study Retrospective analysis of clinical and imaging parameters to predict flair in patients with giant cell arteritis.” which is supported by Chugai Pharma Germany GmbH, Lyoner Straße 15, 60528 Frankfurth am Main.
Collapse
|
7
|
Hoffmann T, Oelzner P, Marcus F, Förster M, Teichgräber U, Wolf G, Pfeil A. AB1374 INTERSTITIAL LUNG DISEASE IN ASYMPTOMATIC PATIENTS AT THE ONSET OF INFLAMMATORY RHEUMATIC DISEASES. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.4627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BackgroundInterstitial lung disease (ILD) in inflammatory rheumatic diseases (IRD) is associated with increased mortality. Moreover, the lung is one of the most effected organs on IRD, but the clinical manifestations and severity can vary from subclinical abnormality to dyspnoea, respiratory failure, and death.ObjectivesThe objective of the following study is to evaluate the frequency and type of ILD in asymptomatic patients at the onset of IRD.MethodsThe study represents a sub-analysis of a case-control study performed earlier, and includes 126 patients with a newly diagnosed IRD. The study cohort was divided in two groups (ILD group: n = 63 and control group: n = 63). The patients were evaluated for respiratory symptoms (cough, sputum, dyspnea) and sclerosiphonia. If possible, all patients received a lung function test and optional a chest x-ray. Patients with pathological findings in the screening tests (chest x-ray or reduced diffusing capacity for carbon monoxide (DLCO) < 80 %) maintained a high-resolution computer tomography (HR-CT) of the lung. The sub-analysis includes 20 patients with asymptomatic ILD at the onset of IRD.ResultsThe asymptomatic ILD group consists out of 75 % female (n = 15) and 25 % male (n = 5) patients, with median age of 51.8 years (SD ± 17.1 years). In comparison, asymptomatic ILD patients are significant younger (t(27.4) = 2.36, p = 0.026), but the distribution of gender is similar. The mean values in different pulmonary function parameter are: FVC: 89.9% ± 19.3%; DLCO: 69.9% ± 21.2%; FEV1: 87.9% ± 21.4%; TLC: 91.0% ± 16.5% and TLCO: 82.1% ± 20.6% (FVC = Forced Vital Capacity, FEV1 = Forced Expiratory Volume in 1 second, TLC = Total Lung Capacity, TLCO = Transfer factor of the Lung for carbon monoxide). The observed CT patterns are pure ground glass opacities (GGO) (50%, n = 10), non-specific interstitial pneumonia (NSIP) (25%, n = 5), granuloma/proliferations (15%, n = 3), usual interstitial pneumonia (UIP) (5%, n = 1) and lymphocytic interstitial pneumonia (LIP) (5%, n = 1). The distribution of CT pattern was not significant to the symptomatic ILD group (χ2(6) = 10.224, p = 0.116).ConclusionThe study highlighted that also clinical asymptomatic patients have ILD in IRD at the onset of the IRD. Frequently, a reduced DLCO is detectable in PFT as a sign of early lung involvement, so this represents a potential screening parameter. Moreover, asymptomatic patients are often younger than symptomatic patients. No significant difference was found in CT pattern, but further research is needed as the number of patients is quite small.Disclosure of InterestsNone declared
Collapse
|
8
|
Zylla MM, Leiner J, Rahm AK, Hoffmann T, Lugenbiel P, Schweizer P, Scholz E, Mereles D, Kronsteiner D, Kieser M, Katus H, Frey N, Thomas D. Cryoballoon-ablation of atrial fibrillation in patients with heart failure and preserved ejection fraction. Europace 2022. [DOI: 10.1093/europace/euac053.210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Public Institution(s). Main funding source(s): Deutsches Zentrum für Herz-Kreislauf-Forschung (DZHK)
Background
Co-existence of atrial fibrillation (AF) and heart failure with preserved ejection fraction (HFpEF) is common and severely affects morbidity and prognosis.
Purpose
This study evaluates outcome after cryoballoon-ablation for AF in HFpEF compared to patients without heart failure employing multiple diagnostic modalities.
Methods
A total of 102 patients scheduled for cryoablation of AF with LVEF≥50% were prospectively enrolled. Baseline evaluation included echocardiography, stress echocardiography, six-minute-walk-test, biomarker measurements and quality of life assessment (SF-36). HFpEF was diagnosed according to current guidelines and confirmed applying the HFA-PEFF-Score. Procedural parameters as well as clinical, functional and echocardiographic endpoints at follow-up ≥12 months after AF-ablation were compared between patients with and without HFpEF.
Results
Patients with HFpEF (n=24) were older (median: 73.5 years [Q25: 66.5 years; Q75: 75.8 years] vs. 64.5 years [Q25: 55.0 years; Q75: 71.3 years], P<0.001) and more often female (83.3% vs. 28.2%). They were characterized by more pronounced AF-related symptoms (median EHRA-score: 3.0 [Q25:3.0; Q75:3.0] vs. 2.0 [Q25: 2.0; Q75: 3.0], P<0.001), reduced distance in six-minute-walk-test (median 487.5m [Q25: 378.1m; Q75: 517.8m] vs. 539.0m [Q25: 489.3m; Q75:589.1 m], P<0.001), and higher mean left atrial (LA)-pressure measured at the needle tip at transseptal puncture (14.0mmHg [Q25: 10.3mmHg; Q75: 21.5mmHg] vs. 10.0 mmHg [Q25: 8.0mmHg; Q75: 13.3mmHg], P=0.008). Procedural parameters were comparable between the two subgroups. Rates of AF-recurrence, repeat AF-ablation and AF-related re-hospitalization were increased in HFpEF (Figure 1A-C), which was confirmed after adjusting for intergroup differences in sex and age distribution by multiple regression analysis. There was no improvement of heart failure-related symptoms and persistent elevation of cardiac biomarkers, even in HFpEF-patients with successful restoration of sinus rhythm at follow-up (Figure 2A-C). Echocardiographic follow-up showed progression of adverse LA-remodeling (LA-volume index at baseline: 35.8ml/m2 [Q25: 32.2ml/m2; Q75: 41.9ml/m2] vs. 12-month follow-up: 40.5ml/m2 [Q25: 36.0ml/m2; Q75: 51.4ml/m2], P=0.017) and no improvement in diastolic function in HFpEF (E/e’ at baseline: 9.7 [Q25: 7.8; Q75: 12.1] vs 12-month follow-up: 10.2 [Q25: 8.4; Q75: 11.8], P=0.874), in particular in patients with HFpEF and AF-recurrence. Quality of life improved in patients without HFpEF in both physical and mental summary scales, however, no beneficial effect was seen in HFpEF.
Conclusion
Patients with HFpEF constitute a distinct subgroup with an elevated risk for arrhythmia recurrence after cryoablation of AF. Functional hallmarks and heart-failure related symptoms of HFpEF persisted in our cohort, irrespective of rhythm-status at follow-up. Future research is needed to optimize tailored treatment strategies in HFpEF.
Collapse
Affiliation(s)
- MM Zylla
- University Hospital Heidelberg, Department of Cardiology, Heidelberg, Germany
| | - J Leiner
- University Hospital Heidelberg, Department of Cardiology, Heidelberg, Germany
| | - AK Rahm
- University Hospital Heidelberg, Department of Cardiology, Heidelberg, Germany
| | - T Hoffmann
- University Hospital Heidelberg, Department of Cardiology, Heidelberg, Germany
| | - P Lugenbiel
- University Hospital Heidelberg, Department of Cardiology, Heidelberg, Germany
| | - P Schweizer
- University Hospital Heidelberg, Department of Cardiology, Heidelberg, Germany
| | - E Scholz
- GRN-Clinic Schwetzingen, Department of Cardiology, Schwetzingen, Germany
| | - D Mereles
- University Hospital Heidelberg, Department of Cardiology, Heidelberg, Germany
| | - D Kronsteiner
- University Hospital Heidelberg, Institute of Medical Biometry, Heidelberg, Germany
| | - M Kieser
- University Hospital Heidelberg, Institute of Medical Biometry, Heidelberg, Germany
| | - H Katus
- University Hospital Heidelberg, Department of Cardiology, Heidelberg, Germany
| | - N Frey
- University Hospital Heidelberg, Department of Cardiology, Heidelberg, Germany
| | - D Thomas
- University Hospital Heidelberg, Department of Cardiology, Heidelberg, Germany
| |
Collapse
|
9
|
Hoffmann T. Onkologische Therapiekonzepte bei Kopf-Hals-Karzinomen. HNO 2022; 70:249-251. [DOI: 10.1007/s00106-022-01153-1] [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] [Accepted: 02/03/2022] [Indexed: 11/04/2022]
|
10
|
Christie DR, Veloso JAV, Campus P, Bell M, Hoffmann T, Langlois A, Martysevich P, Demirovic E, Carvalho J. Detection of atmospheric nuclear explosions: the infrasound component of the International Monitoring System. KERNTECHNIK 2022. [DOI: 10.1515/kern-2001-0058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The infrasound component of the International Monitoring System (IMS') for Comprehensive Nuclear-Test-Ban Treaty verification will consist of 60 array stations distributed as uniformly as possible over the surface of the globe. This network will be far larger and more sensitive than any other previously operated infrasound network. In this paper, we discuss the design and performance characteristics of this monitoring network and the current status of the site survey and installation programs. A brief review of significant developments in infrasound monitoring technology in the last few years is also presented along with a summary of the various areas where data from this unique global network is likely to be of value to the scientific community.
Collapse
Affiliation(s)
- D. R. Christie
- Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization, Provisional Technical Secretariat, Vienna International , , A-1400 Vienna , Austria
| | - J. A. Vivas Veloso
- Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization, Provisional Technical Secretariat, Vienna International , , A-1400 Vienna , Austria
| | - P Campus
- Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization, Provisional Technical Secretariat, Vienna International , , A-1400 Vienna , Austria
| | - M. Bell
- Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization, Provisional Technical Secretariat, Vienna International , , A-1400 Vienna , Austria
| | | | - A. Langlois
- Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization, Provisional Technical Secretariat, Vienna International , , A-1400 Vienna , Austria
| | - P. Martysevich
- Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization, Provisional Technical Secretariat, Vienna International , , A-1400 Vienna , Austria
| | - E. Demirovic
- Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization, Provisional Technical Secretariat, Vienna International , , A-1400 Vienna , Austria
| | - J. Carvalho
- Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization, Provisional Technical Secretariat, Vienna International , , A-1400 Vienna , Austria
| |
Collapse
|
11
|
Hoffmann T, Rahfeld JU, Schenk M, Ponath F, Makioka K, Hutter-Paier B, Lues I, Lemere CA, Schilling S. Combination of the Glutaminyl Cyclase Inhibitor PQ912 (Varoglutamstat) and the Murine Monoclonal Antibody PBD-C06 (m6) Shows Additive Effects on Brain Aβ Pathology in Transgenic Mice. Int J Mol Sci 2021; 22:ijms222111791. [PMID: 34769222 PMCID: PMC8584206 DOI: 10.3390/ijms222111791] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 10/07/2021] [Accepted: 10/27/2021] [Indexed: 11/16/2022] Open
Abstract
Compelling evidence suggests that pyroglutamate-modified Aβ (pGlu3-Aβ; AβN3pG) peptides play a pivotal role in the development and progression of Alzheimer’s disease (AD). Approaches targeting pGlu3-Aβ by glutaminyl cyclase (QC) inhibition (Varoglutamstat) or monoclonal antibodies (Donanemab) are currently in clinical development. Here, we aimed at an assessment of combination therapy of Varoglutamstat (PQ912) and a pGlu3-Aβ-specific antibody (m6) in transgenic mice. Whereas the single treatments at subtherapeutic doses show moderate (16–41%) but statistically insignificant reduction of Aβ42 and pGlu-Aβ42 in mice brain, the combination of both treatments resulted in significant reductions of Aβ by 45–65%. Evaluation of these data using the Bliss independence model revealed a combination index of ≈1, which is indicative for an additive effect of the compounds. The data are interpreted in terms of different pathways, in which the two drugs act. While PQ912 prevents the formation of pGlu3-Aβ in different compartments, the antibody is able to clear existing pGlu3-Aβ deposits. The results suggest that combination of the small molecule Varoglutamstat and a pE3Aβ-directed monoclonal antibody may allow a reduction of the individual compound doses while maintaining the therapeutic effect.
Collapse
Affiliation(s)
- Torsten Hoffmann
- Vivoryon Therapeutics N.V., Weinbergweg 22, 06120 Halle, Germany;
- Correspondence: (T.H.); (S.S.)
| | - Jens-Ulrich Rahfeld
- Fraunhofer Institute for Cell Therapy and Immunology, Department of Drug Design and Target Validation, Weinbergweg 22, 06120 Halle, Germany; (J.-U.R.); (M.S.)
| | - Mathias Schenk
- Fraunhofer Institute for Cell Therapy and Immunology, Department of Drug Design and Target Validation, Weinbergweg 22, 06120 Halle, Germany; (J.-U.R.); (M.S.)
| | - Falk Ponath
- Department of Neurology, Brigham and Women’s Hospital, Harvard Medical School, 60 Fenwood Rd., Boston, MA 02115, USA; (F.P.); (K.M.); (C.A.L.)
| | - Koki Makioka
- Department of Neurology, Brigham and Women’s Hospital, Harvard Medical School, 60 Fenwood Rd., Boston, MA 02115, USA; (F.P.); (K.M.); (C.A.L.)
| | - Birgit Hutter-Paier
- QPS Austria GmbH, Department of Neuropharmacology, Parkring 12, A-8074 Grambach, Austria;
| | - Inge Lues
- Vivoryon Therapeutics N.V., Weinbergweg 22, 06120 Halle, Germany;
| | - Cynthia A. Lemere
- Department of Neurology, Brigham and Women’s Hospital, Harvard Medical School, 60 Fenwood Rd., Boston, MA 02115, USA; (F.P.); (K.M.); (C.A.L.)
| | - Stephan Schilling
- Fraunhofer Institute for Cell Therapy and Immunology, Department of Drug Design and Target Validation, Weinbergweg 22, 06120 Halle, Germany; (J.-U.R.); (M.S.)
- Anhalt University of Applied Sciences, Bernburger Straße 55, 06366 Köthen, Germany
- Correspondence: (T.H.); (S.S.)
| |
Collapse
|
12
|
Scholz O, Otter S, Welters A, Wörmeyer L, Dolenšek J, Klemen MS, Pohorec V, Eberhard D, Mrugala J, Hamacher A, Koch A, Sanz M, Hoffmann T, Hogeback J, Herebian D, Klöcker N, Piechot A, Mayatepek E, Meissner T, Stožer A, Lammert E. Peripherally active dextromethorphan derivatives lower blood glucose levels by targeting pancreatic islets. Cell Chem Biol 2021; 28:1474-1488.e7. [PMID: 34118188 DOI: 10.1016/j.chembiol.2021.05.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 03/09/2021] [Accepted: 05/17/2021] [Indexed: 12/12/2022]
Abstract
Dextromethorphan (DXM) acts as cough suppressant via its central action. Cell-protective effects of this drug have been reported in peripheral tissues, making DXM potentially useful for treatment of several common human diseases, such as type 2 diabetes mellitus (T2DM). Pancreatic islets are among the peripheral tissues that positively respond to DXM, and anti-diabetic effects of DXM were observed in two placebo-controlled, randomized clinical trials in humans with T2DM. Since these effects were associated with central side effects, we here developed chemical derivatives of DXM that pass the blood-brain barrier to a significantly lower extent than the original drug. We show that basic nitrogen-containing residues block central adverse events of DXM without reducing its anti-diabetic effects, including the protection of human pancreatic islets from cell death. These results show how to chemically modify DXM, and possibly other morphinans, as to exclude central side effects, while targeting peripheral tissues, such as pancreatic islets.
Collapse
Affiliation(s)
- Okka Scholz
- Institute for Vascular and Islet Cell Biology, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University, 40225 Düsseldorf, Germany; Institute of Metabolic Physiology, Heinrich Heine University, 40225 Düsseldorf, Germany; Center of Competence for Innovative Diabetes Therapy (KomIT), German Diabetes Center (DDZ), 40225 Düsseldorf, Germany; German Center for Diabetes Research (DZD e.V.), Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Silke Otter
- Institute for Vascular and Islet Cell Biology, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University, 40225 Düsseldorf, Germany; Institute of Metabolic Physiology, Heinrich Heine University, 40225 Düsseldorf, Germany; Center of Competence for Innovative Diabetes Therapy (KomIT), German Diabetes Center (DDZ), 40225 Düsseldorf, Germany
| | - Alena Welters
- Institute of Metabolic Physiology, Heinrich Heine University, 40225 Düsseldorf, Germany; Department of General Pediatrics, Neonatology and Pediatric Cardiology, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Laura Wörmeyer
- Institute of Metabolic Physiology, Heinrich Heine University, 40225 Düsseldorf, Germany; Department of General Pediatrics, Neonatology and Pediatric Cardiology, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Jurij Dolenšek
- Faculty of Medicine, University of Maribor, Taborska ulica 8, 2000 Maribor, Slovenia; Faculty of Natural Sciences and Mathematics, University of Maribor, Koroška cesta 160, 2000 Maribor, Slovenia
| | - Maša Skelin Klemen
- Faculty of Medicine, University of Maribor, Taborska ulica 8, 2000 Maribor, Slovenia
| | - Viljem Pohorec
- Faculty of Medicine, University of Maribor, Taborska ulica 8, 2000 Maribor, Slovenia
| | - Daniel Eberhard
- Institute for Vascular and Islet Cell Biology, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University, 40225 Düsseldorf, Germany; Institute of Metabolic Physiology, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Jessica Mrugala
- Institute for Vascular and Islet Cell Biology, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University, 40225 Düsseldorf, Germany; Institute of Metabolic Physiology, Heinrich Heine University, 40225 Düsseldorf, Germany; German Center for Diabetes Research (DZD e.V.), Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Anna Hamacher
- Institute for Vascular and Islet Cell Biology, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University, 40225 Düsseldorf, Germany; Institute of Metabolic Physiology, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Angela Koch
- Institute of Neuro- and Sensory Physiology, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Miguel Sanz
- Center of Competence for Innovative Diabetes Therapy (KomIT), German Diabetes Center (DDZ), 40225 Düsseldorf, Germany; Taros Chemicals GmbH & Co. KG, 44227 Dortmund, Germany
| | - Torsten Hoffmann
- Center of Competence for Innovative Diabetes Therapy (KomIT), German Diabetes Center (DDZ), 40225 Düsseldorf, Germany; Taros Chemicals GmbH & Co. KG, 44227 Dortmund, Germany
| | - Jens Hogeback
- A&M Labor für Analytik und Metabolismusforschung Service GmbH, 50126 Bergheim, Germany
| | - Diran Herebian
- Department of General Pediatrics, Neonatology and Pediatric Cardiology, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Nikolaj Klöcker
- Institute of Neuro- and Sensory Physiology, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Alexander Piechot
- Center of Competence for Innovative Diabetes Therapy (KomIT), German Diabetes Center (DDZ), 40225 Düsseldorf, Germany; Taros Chemicals GmbH & Co. KG, 44227 Dortmund, Germany
| | - Ertan Mayatepek
- Department of General Pediatrics, Neonatology and Pediatric Cardiology, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Thomas Meissner
- Department of General Pediatrics, Neonatology and Pediatric Cardiology, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University, 40225 Düsseldorf, Germany
| | - Andraž Stožer
- Faculty of Medicine, University of Maribor, Taborska ulica 8, 2000 Maribor, Slovenia
| | - Eckhard Lammert
- Institute for Vascular and Islet Cell Biology, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University, 40225 Düsseldorf, Germany; Institute of Metabolic Physiology, Heinrich Heine University, 40225 Düsseldorf, Germany; Center of Competence for Innovative Diabetes Therapy (KomIT), German Diabetes Center (DDZ), 40225 Düsseldorf, Germany; German Center for Diabetes Research (DZD e.V.), Helmholtz Zentrum München, 85764 Neuherberg, Germany.
| |
Collapse
|
13
|
Keek S, Wesseling F, Woodruff H, van Timmeren J, Nauta I, Hoffmann T, Cavalieri S, Calareso G, Primakov S, Leijenaar R, Licitra L, Ravanelli M, Scheckenbach K, Poli T, Lanfranco D, Vergeer M, Leemans R, Brakenhoff R, Hoebers F, Lambin P. OC-0642 A radiomics based prognostic model for patients with head and neck squamous cell carcinoma. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)06998-x] [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: 11/29/2022]
|
14
|
Wolter M, Valenti D, Cossar PJ, Hristeva S, Levy LM, Genski T, Hoffmann T, Brunsveld L, Tzalis D, Ottmann C. An Exploration of Chemical Properties Required for Cooperative Stabilization of the 14-3-3 Interaction with NF-κB-Utilizing a Reversible Covalent Tethering Approach. J Med Chem 2021; 64:8423-8436. [PMID: 34076416 PMCID: PMC8237268 DOI: 10.1021/acs.jmedchem.1c00401] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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] [Indexed: 12/16/2022]
Abstract
![]()
Protein–protein
modulation has emerged as a proven approach
to drug discovery. While significant progress has been gained in developing
protein–protein interaction (PPI) inhibitors, the orthogonal
approach of PPI stabilization lacks established methodologies for
drug design. Here, we report the systematic ″bottom-up″
development of a reversible covalent PPI stabilizer. An imine bond
was employed to anchor the stabilizer at the interface of the 14-3-3/p65
complex, leading to a molecular glue that elicited an 81-fold increase
in complex stabilization. Utilizing protein crystallography and biophysical
assays, we deconvoluted how chemical properties of a stabilizer translate
to structural changes in the ternary 14-3-3/p65/molecular glue complex.
Furthermore, we explore how this leads to high cooperativity and increased
stability of the complex.
Collapse
Affiliation(s)
- Madita Wolter
- Department of Biomedical Engineering, Laboratory of Chemical Biology and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Dario Valenti
- Department of Biomedical Engineering, Laboratory of Chemical Biology and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.,Medicinal Chemistry, Taros Chemicals GmbH & Co. KG, Emil-Figge-Straße 76a, 44227 Dortmund, Germany
| | - Peter J Cossar
- Department of Biomedical Engineering, Laboratory of Chemical Biology and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Stanimira Hristeva
- Medicinal Chemistry, Taros Chemicals GmbH & Co. KG, Emil-Figge-Straße 76a, 44227 Dortmund, Germany
| | - Laura M Levy
- Medicinal Chemistry, Taros Chemicals GmbH & Co. KG, Emil-Figge-Straße 76a, 44227 Dortmund, Germany
| | - Thorsten Genski
- Medicinal Chemistry, Taros Chemicals GmbH & Co. KG, Emil-Figge-Straße 76a, 44227 Dortmund, Germany
| | - Torsten Hoffmann
- Medicinal Chemistry, Taros Chemicals GmbH & Co. KG, Emil-Figge-Straße 76a, 44227 Dortmund, Germany
| | - Luc Brunsveld
- Department of Biomedical Engineering, Laboratory of Chemical Biology and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Dimitrios Tzalis
- Medicinal Chemistry, Taros Chemicals GmbH & Co. KG, Emil-Figge-Straße 76a, 44227 Dortmund, Germany
| | - Christian Ottmann
- Department of Biomedical Engineering, Laboratory of Chemical Biology and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| |
Collapse
|
15
|
Hoffmann T, Oelzner P, Marcus F, Förster M, Böttcher J, Wolf G, Pfeil A. AB0796 THE EVALUATION OF LUNG DIAGNOSTIC PROCEDURE AT THE ONSET OF INFLAMMATORY RHEUMATIC DISEASES WITH INTERSTITIAL LUNG DISEASE. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.3119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Interstitial lung disease (ILD) in inflammatory rheumatic diseases (IRD) is associated with increased mortality. Moreover, the lung is one of the most effected organs on IRD. Consequently, screening methods were required to the detect ILD in IRD.Objectives:The objective of the following study is to evaluate the diagnostic value of lung function test, chest x-ray and HR-CT of the lung in the detection of ILD at the onset of IRD.Methods:The study is designed as a case-control study and includes 126 patients with a newly diagnosed IRD. It was matched by gender, age and the performance of lung function test and chest x-ray. The sensitivity and specificity were verified by crosstabs and receiver operating characteristic (ROC) curve analysis. The study cohort was divided in two groups (ILD group: n = 63 and control group: n = 63). If possible, all patients received a lung function test and optional a chest x-ray. Patients with pathological findings in the screening tests (chest x-ray or reduced diffusing capacity for carbon monoxide (DLCO) < 80 %) maintained a high-resolution computer tomography (HR-CT) of the lung. Additionally, an immunological bronchioalveolar lavage was performed in the ILD group as gold standard for the detection of ILD.Results:The DLCO (< 80 %) revealed a sensitivity of 83.6 % and specificity of 45.8 % for the detection of ILD. Other examined parameter of lung function test showed no sufficient sensitivity as screening test (FVC = Forced Vital Capacity, FEV1 = Forced Expiratory Volume in 1 second, TLC = Total Lung Capacity, TLCO = Transfer factor of the Lung for carbon monoxide). Also, a combination of different parameter did not increase the sensitivity. The sensitivity and specificity of chest x-ray for the verification of ILD was 64.2 % versus 73.6 %. The combination of DLCO (< 80 %) and chest x-ray showed a sensitivity with 95.2 % and specificity with 38.7 %. The highest sensitivity (95.2 %) and specificity (77.4 %) was observed for the combination of DLCO (< 80 %) and HR-CT of the lung.Conclusion:The study highlighted that a reduced DLCO in lung function test is associated with a lung involvement in IRD. DLCO represented a potential screening parameter for lung manifestation in IRD. Especially patients with suspected vasculitis should receive an additional chest x-ray. Based on the high sensitivity of DLCO in combination with chest x-ray or HR-CT for the detection of ILD in IRD, all patients with a reduced DLCO (< 80%) should obtained an imaging of the lung.Disclosure of Interests:None declared
Collapse
|
16
|
Pfeil A, Marcus F, Hoffmann T, Klemm P, Oelzner P, Müller-Ladner U, Hueber A, Lange U, Wolf G, Schett G, Simon D, Kleyer A. OP0075 EVALUATION OF A VIRTUAL REALITY TEACHING CONCEPT FOR MEDICAL STUDENTS DURING THE SARS-COV-2 PANDEMIC. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.2578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:The ongoing COVID-19 pandemic has disrupted face-to-face teaching of medical students and forced efforts in finding alternative approaches. In order to help maintain high-quality education, a new virtual reality (VR)-based concept for training medical students in rheumatic and musculoskeletal diseases (RMD) has been developed. This VR training concept is based on the integration of real patient data with two- and three-dimensional visualized pathological joints from X-ray and computed tomography generated images.Objectives:To evaluate the practicability and acceptance of the VR training application in the digital curricular education of medical students during the COVID-19 pandemic.Methods:A short refresher lecture on rheumatic diseases (duration 60 minutes) was followed by presenting the VR training concept to the students. The VR training concept included the demonstration of three virtual patients with early rheumatoid arthritis, rheumatoid arthritis psoriatic arthritis regarding the symptoms, current medical problems, disease patterns at the imaging (conventional radiographs and high-resolution computed tomography) and therapy options. The practicability and acceptance of the VR was evaluated by medical students using a survey.Results:The study encompassed 237 medical students (163 female, 73 male, one diverse, age range 20 to 40 years). 72 % of the participants rated the virtual teaching as good or very good. 87 % presented an expanded knowledge for rheumatoid arthritis and psoriatic arthritis through the VR. Moreover, 91 % reported that the lecture provided a deeper understanding of RMD. Furthermore, 60 % of the students asked for additional courses by VR.Conclusion:The study highlighted the usefulness of innovative VR tools for teaching medical students digitally about RMD. VR applications can be a complementary educational modality for medical students, especially during the COVID-19 pandemic, to provide students with the best possible clinical experience while ensuring that patient, student, and staff safety is not compromised.Figure 1.A Screen view of virtual reality included three virtual patients with early rheumatoid arthritis (RA), RA, and psoriatic arthritis (PsA) and B demonstration of structural damage in RA and PsA using hand X-ray and high-resolution quantitative computed tomography images.Disclosure of Interests:Alexander Pfeil Speakers bureau: Lilly Pharma Deutschland GmbH, Franz Marcus: None declared, Tobias Hoffmann: None declared, Philipp Klemm Consultant of: Lilly Pharma Deutschland GmbH, Peter Oelzner: None declared, Ulf Müller-Ladner Consultant of: Lilly Pharma Deutschland GmbH, Axel Hueber Consultant of: Lilly Pharma Deutschland GmbH, Uwe Lange: None declared, Gunter Wolf: None declared, Georg Schett: None declared, David Simon Consultant of: Lilly Pharma Deutschland GmbH, Arnd Kleyer Consultant of: Lilly Pharma Deutschland GmbH
Collapse
|
17
|
Schotte U, Hoffmann T, Schwarz NG, Rojak S, Lusingu J, Minja D, Kaseka J, Mbwana J, Gesase S, May J, Dekker D, Frickmann H. Study of enteric pathogens among children in the tropics and effects of prolonged storage of stool samples. Lett Appl Microbiol 2021; 72:774-782. [PMID: 33544912 DOI: 10.1111/lam.13457] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 01/13/2021] [Accepted: 01/28/2021] [Indexed: 12/11/2022]
Abstract
The study was performed to compare real-time PCR after nucleic acid extraction directly from stool samples as well as from samples stored and transported on Whatman papers or flocked swabs at ambient temperature in the tropics. In addition, the possible suitability for a clear determination of likely aetiological relevance of PCR-based pathogen detections based on cycle threshold (Ct) values was assessed. From 632 Tanzanian children <5 years of age with and without gastrointestinal symptoms, 466 samples were subjected to nucleic acid extraction and real-time PCR for gastrointestinal viral, bacterial and protozoan pathogens. Equal or even higher frequencies of pathogen detections from Whatman papers or flocked swabs were achieved compared with nucleic acid extraction directly from stool samples. Comparison of the Ct values showed no significant difference according to the nucleic acid extraction strategy. Also, the Ct values did not allow a decision whether a detected pathogen was associated with gastrointestinal symptoms.
Collapse
Affiliation(s)
- U Schotte
- Department A - Veterinary Medicine, Central Institute of the Bundeswehr Medical Service Kiel, Kronshagen, Germany
| | - T Hoffmann
- Department of Microbiology and Hospital Hygiene, Bundeswehr Hospital Hamburg, Hamburg, Germany
| | - N G Schwarz
- Infectious Disease Epidemiology Department, Bernhard Nocht Institute for Tropical Medicine Hamburg, Hamburg, Germany
| | - S Rojak
- Department of Microbiology and Hospital Hygiene, Bundeswehr Central Hospital Koblenz, Koblenz, Germany
| | - J Lusingu
- National Institute for Medical Research, Dar es Salaam, Tanzania
| | - D Minja
- National Institute for Medical Research, Dar es Salaam, Tanzania
| | - J Kaseka
- National Institute for Medical Research, Dar es Salaam, Tanzania
| | - J Mbwana
- National Institute for Medical Research, Dar es Salaam, Tanzania
| | - S Gesase
- National Institute for Medical Research, Dar es Salaam, Tanzania
| | - J May
- Infectious Disease Epidemiology Department, Bernhard Nocht Institute for Tropical Medicine Hamburg, Hamburg, Germany
| | - D Dekker
- Infectious Disease Epidemiology Department, Bernhard Nocht Institute for Tropical Medicine Hamburg, Hamburg, Germany
| | - H Frickmann
- Department of Microbiology and Hospital Hygiene, Bundeswehr Hospital Hamburg, Hamburg, Germany.,Department of Medical Microbiology, Virology and Hygiene, University Medicine Rostock, Rostock, Germany
| |
Collapse
|
18
|
Abstract
Until the 1990s, radical sinus surgery was considered a standard procedure for maxillary sinus diseases, but it is no longer favored due to the high morbidity. Today, functional endoscopic sinus surgery (FESS) is considered the gold standard in sinus surgery. Modifications of surgical approaches also allow access to regions of the maxillary sinus that were previously difficult to reach. Depending on anatomy and pathology, different methods for widening the maxillary ostium can be selected. In type I sinusotomy, the natural ostium is widened dorsally by a maximum of 1 cm. Sinusotomy type II involves widening the natural ostium up to a maximum diameter of 2 cm. In sinusotomy type III, the natural ostium is widened dorsally to the posterior wall of the maxillary sinus and caudally to the base of the inferior turbinate. Beside the prelacrimal approach, more invasive approaches are the medial maxillectomy, in which the dorsal part of the inferior turbinate and the adjacent medial wall of the maxillary sinus is resected, as well as its modifications "mega antrostomy" and "extended maxillary antrostomy." Correct selection of the size of the maxillary sinus window is prerequisite for successful treatment and long-term postoperative success. Isolated purulent maxillary sinusitis can usually be treated by a type I sinusotomy. Sinusotomy type II addresses nasal polyps with involvement of the mucosa of the ostium, recurrent stenosis after previous surgery, chronic maxillary sinusitis due to cystic fibrosis, and purulent maxillary sinusitis with involvement of other adjacent sinuses. Sinusotomy type III is required for choanal polyps with attachment to the floor of the maxillary sinus, for extensive polyposis and fungal sinusitis, and for inverted papilloma. Particularly for (recurrent) disease and extensive interventions in the maxillary sinus, medial maxillectomy or a modification thereof may be required.
Collapse
Affiliation(s)
- F Sommer
- Klinik für Hals-Nasen-Ohrenheilkunde, Kopf- und Halschirurgie, Universitätsklinikum Ulm, Frauensteige 12, 89075, Ulm, Deutschland.
| | - T Hoffmann
- Klinik für Hals-Nasen-Ohrenheilkunde, Kopf- und Halschirurgie, Universitätsklinikum Ulm, Frauensteige 12, 89075, Ulm, Deutschland
| | - J Lindemann
- Klinik für Hals-Nasen-Ohrenheilkunde, Kopf- und Halschirurgie, Universitätsklinikum Ulm, Frauensteige 12, 89075, Ulm, Deutschland
| | - J Hahn
- Klinik für Hals-Nasen-Ohrenheilkunde, Kopf- und Halschirurgie, Universitätsklinikum Ulm, Frauensteige 12, 89075, Ulm, Deutschland
| | - M-N Theodoraki
- Klinik für Hals-Nasen-Ohrenheilkunde, Kopf- und Halschirurgie, Universitätsklinikum Ulm, Frauensteige 12, 89075, Ulm, Deutschland
| |
Collapse
|
19
|
Wolter M, Valenti D, Cossar PJ, Levy LM, Hristeva S, Genski T, Hoffmann T, Brunsveld L, Tzalis D, Ottmann C. Fragment-Based Stabilizers of Protein-Protein Interactions through Imine-Based Tethering. Angew Chem Int Ed Engl 2020; 59:21520-21524. [PMID: 32816380 PMCID: PMC7756862 DOI: 10.1002/anie.202008585] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 07/16/2020] [Indexed: 12/22/2022]
Abstract
Small‐molecule stabilization of protein–protein interactions (PPIs) is a promising concept in drug discovery, however the question how to identify or design chemical starting points in a “bottom‐up” approach is largely unanswered. We report a novel concept for identifying initial chemical matter for PPI stabilization based on imine‐forming fragments. The imine bond offers a covalent anchor for site‐directed fragment targeting, whereas its transient nature enables efficient analysis of structure–activity relationships. This bond enables fragment identification and optimisation using protein crystallography. We report novel fragments that bind specifically to a lysine at the PPI interface of the p65‐subunit‐derived peptide of NF‐κB with the adapter protein 14‐3‐3. Those fragments that subsequently establish contacts with the p65‐derived peptide, rather than with 14‐3‐3, efficiently stabilize the 14‐3‐3/p65 complex and offer novel starting points for molecular glues.
Collapse
Affiliation(s)
- Madita Wolter
- Laboratory of Chemical Biology, Department of Biomedical, Engineering and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Dario Valenti
- Laboratory of Chemical Biology, Department of Biomedical, Engineering and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands.,Taros Chemicals GmbH & Co. KG, Emil-Figge-Straße 76a, 44227, Dortmund, Germany
| | - Peter J Cossar
- Laboratory of Chemical Biology, Department of Biomedical, Engineering and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Laura M Levy
- Taros Chemicals GmbH & Co. KG, Emil-Figge-Straße 76a, 44227, Dortmund, Germany
| | - Stanimira Hristeva
- Taros Chemicals GmbH & Co. KG, Emil-Figge-Straße 76a, 44227, Dortmund, Germany
| | - Thorsten Genski
- Taros Chemicals GmbH & Co. KG, Emil-Figge-Straße 76a, 44227, Dortmund, Germany
| | - Torsten Hoffmann
- Taros Chemicals GmbH & Co. KG, Emil-Figge-Straße 76a, 44227, Dortmund, Germany
| | - Luc Brunsveld
- Laboratory of Chemical Biology, Department of Biomedical, Engineering and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Dimitrios Tzalis
- Taros Chemicals GmbH & Co. KG, Emil-Figge-Straße 76a, 44227, Dortmund, Germany
| | - Christian Ottmann
- Laboratory of Chemical Biology, Department of Biomedical, Engineering and Institute for Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands.,Department of Chemistry, University of Duisburg-Essen, Universitätsstrasse 7, 45117, Essen, Germany
| |
Collapse
|
20
|
Wolter M, Valenti D, Cossar PJ, Levy LM, Hristeva S, Genski T, Hoffmann T, Brunsveld L, Tzalis D, Ottmann C. Fragment‐Based Stabilizers of Protein–Protein Interactions through Imine‐Based Tethering. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008585] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Madita Wolter
- Laboratory of Chemical Biology Department of Biomedical, Engineering and Institute for Complex Molecular Systems Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands
| | - Dario Valenti
- Laboratory of Chemical Biology Department of Biomedical, Engineering and Institute for Complex Molecular Systems Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands
- Taros Chemicals GmbH & Co. KG Emil-Figge-Straße 76a 44227 Dortmund Germany
| | - Peter J. Cossar
- Laboratory of Chemical Biology Department of Biomedical, Engineering and Institute for Complex Molecular Systems Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands
| | - Laura M. Levy
- Taros Chemicals GmbH & Co. KG Emil-Figge-Straße 76a 44227 Dortmund Germany
| | - Stanimira Hristeva
- Taros Chemicals GmbH & Co. KG Emil-Figge-Straße 76a 44227 Dortmund Germany
| | - Thorsten Genski
- Taros Chemicals GmbH & Co. KG Emil-Figge-Straße 76a 44227 Dortmund Germany
| | - Torsten Hoffmann
- Taros Chemicals GmbH & Co. KG Emil-Figge-Straße 76a 44227 Dortmund Germany
| | - Luc Brunsveld
- Laboratory of Chemical Biology Department of Biomedical, Engineering and Institute for Complex Molecular Systems Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands
| | - Dimitrios Tzalis
- Taros Chemicals GmbH & Co. KG Emil-Figge-Straße 76a 44227 Dortmund Germany
| | - Christian Ottmann
- Laboratory of Chemical Biology Department of Biomedical, Engineering and Institute for Complex Molecular Systems Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands
- Department of Chemistry University of Duisburg-Essen Universitätsstrasse 7 45117 Essen Germany
| |
Collapse
|
21
|
Hoffmann T, Voigt K, Kugler J, Peschel L, Bergmann A, Riemenschneider H. Are German family practitioners and psychiatrists sufficiently trained to diagnose and treat patients with alcohol problems? BMC Fam Pract 2019; 20:115. [PMID: 31416419 PMCID: PMC6694527 DOI: 10.1186/s12875-019-1006-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 08/07/2019] [Indexed: 11/18/2022]
Abstract
Background Harmful alcohol consumption in Germany is a serious public health problem: About 7.7 million adults in Germany can be classified as risky alcohol consumers, about 74,000 deaths per year are related to alcohol consumption, and about 1.8 million adults in Germany (18–64 years) are classified as alcohol dependent. A treatment rate of 9% of all alcohol dependent patients in Germany implies a lack of supply and misuse of medical care. The aim of the study was to examine whether family practitioners (FPs) and psychiatrists have sufficient skills to diagnose and treat patients with alcohol problems. Methods A total of 6324 FPs and psychiatrists in the states of Saxony and Rhineland-Palatinate in Germany were invited to participate in this survey. Nine hundred seventy-four participants (90.3%/FPs) could be included in the statistical analysis (response rate: 14.3%/FPs, 21.6%/psychiatrists). Data was analysed descriptively and logistical regressions were used to identify predictors for physicians’ ability to feel adequately trained to diagnose and treat patients with alcohol problems. Results In comparison to psychiatrists, less FPs reported feeling sufficiently trained to counsel patients with alcohol problems (81.5% vs. 44.8%). Regression analysis revealed that FPs who felt not adequately trained had less experience with patients with alcohol dependence (OR 7.4), had attended fewer hours on alcohol addiction in continuing medical education (OR 4.8), and were more likely to be female (OR 1.9). A minimum of 10 h of training was associated with improved self-assessed competence. Conclusion Harmful drinking is a serious public health problem, and patients with alcohol dependence represent a large and demanding patient group in primary health care setting. Our study shows that the lack of training is a severe barrier in the work with this patient group in the primary care setting.
Collapse
Affiliation(s)
- T Hoffmann
- Department of Health Sciences / Public Health, Technische Universität Dresden, Fetscherstr 74, 01307, Dresden, Germany
| | - K Voigt
- Department of General Practice, Medical Clinic 3, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Fetscherstr 74, 01307, Dresden, Germany
| | - J Kugler
- Department of Health Sciences / Public Health, Technische Universität Dresden, Fetscherstr 74, 01307, Dresden, Germany
| | - L Peschel
- Department of Health Sciences / Public Health, Technische Universität Dresden, Fetscherstr 74, 01307, Dresden, Germany
| | - A Bergmann
- Department of General Practice, Medical Clinic 3, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Fetscherstr 74, 01307, Dresden, Germany
| | - H Riemenschneider
- Department of General Practice, Medical Clinic 3, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Fetscherstr 74, 01307, Dresden, Germany.
| |
Collapse
|
22
|
Abstract
BACKGROUND The initial presentation of patients with symptoms indicative of a rheumatic disease is in most cases not directly to a rheumatologist. This study evaluated the following questions: I. Which medical specialists refer patients to a department of rheumatology? II. Evaluation of the accordance of the presumptive referral diagnosis and the final diagnosis by a rheumatologist. METHODS A total of 947 patients (279 men and 668 women) who initially presented to a university hospital for rheumatological diagnostics were included in the study. The referring medical specialist fields were identified. Furthermore, a kappa analysis was performed to evaluate the accordance of the presumptive referral diagnosis and the final diagnosis generated after a rheumatological evaluation of the patients. RESULTS Of the referrals 73% were initiated by general practitioners or internists functioning as general practitioners. The other referrers were 5% specialists in internal medicine (excluding rheumatology), 4% orthopedic/trauma surgeons, 1% other surgeons and 4% other specialist fields. A rheumatological diagnosis was made in 58% of the patients and rheumatological inflammatory joint diseases (26%), collagenosis (14%) and vasculitides (5%) were the most frequently diagnoses. The accordance of the presumptive diagnosis of the general practitioners and the final diagnosis after rheumatological evaluation was a kappa coefficient of κ = 0.304. Lower kappa values were evaluated for orthopedic surgeons (κ = 0.277) and other specialists (κ = 0.200). CONCLUSION The referrals to a rheumatology institution were frequently initiated by general practitioners and internists functioning as general practitioners. In this context the presumptive diagnosis of general practitioners showed a low accordance with the final rheumatological diagnosis. In contrast, a detailed presumptive diagnosis is desirable for optimal use of the limited resources for rheumatological care.
Collapse
Affiliation(s)
- T Hoffmann
- Klinik für Innere Medizin III, Universitätsklinikum Jena, Am Klinikum 1, 07747, Jena, Deutschland
| | - P Oelzner
- Klinik für Innere Medizin III, Universitätsklinikum Jena, Am Klinikum 1, 07747, Jena, Deutschland
| | - J Böttcher
- Institut für Diagnostische und Interventionelle Radiologie, SRH Wald-Klinikum Gera, Gera, Deutschland
| | - G Wolf
- Klinik für Innere Medizin III, Universitätsklinikum Jena, Am Klinikum 1, 07747, Jena, Deutschland
| | - A Pfeil
- Klinik für Innere Medizin III, Universitätsklinikum Jena, Am Klinikum 1, 07747, Jena, Deutschland.
| |
Collapse
|
23
|
Weigand S, Saalfeld S, Hoffmann T, Eppler E, Kalinski T, Jachau K, Skalej M. Suitability of intravascular imaging for assessment of cerebrovascular diseases. Neuroradiology 2019; 61:1093-1101. [DOI: 10.1007/s00234-019-02233-w] [Citation(s) in RCA: 2] [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] [Received: 02/18/2019] [Accepted: 05/21/2019] [Indexed: 10/26/2022]
|
24
|
Abstract
Pituitary adenomas are among the most common primary brain tumors. These tumors can produce all hormones of the anterior pituitary and thus cause endocrine diseases. Compression of the pituitary gland, the surrounding cranial nerves, or brain structures can lead to hypopituitarism, cranial nerve deficits, or diverse neurological symptoms. Visual impairment, typically with bitemporal hemianopsia, is the most common cardinal symptom. The diagnostic workup requires broad interdisciplinary cooperation. With the exception of prolactinoma, the treatment of choice for symptomatic pituitary adenoma is transnasal transsphenoidal resection. For prolactinoma, dopamine agonistic therapy is the primary treatment. Adequate hormone replacement therapy is essential in cases of hypopituitarism. Long-term follow-up is a vital part of the treatment concept.
Collapse
Affiliation(s)
- M Hlaváč
- Klinik für Neurochirurgie, Universität Ulm, Albert-Einstein-Allee 23, 89075, Ulm, Deutschland.
| | - F Sommer
- Klinik für Hals-Nasen-Ohrenheilkunde, Universität Ulm, Frauensteige 12, 89075, Ulm, Deutschland
| | - G Karpel-Massler
- Klinik für Neurochirurgie, Universität Ulm, Albert-Einstein-Allee 23, 89075, Ulm, Deutschland
| | - R Wirtz
- Klinik für Neurochirurgie, Universität Ulm, Albert-Einstein-Allee 23, 89075, Ulm, Deutschland
| | - T Hoffmann
- Klinik für Hals-Nasen-Ohrenheilkunde, Universität Ulm, Frauensteige 12, 89075, Ulm, Deutschland
| | - A Paľa
- Klinik für Neurochirurgie, Universität Ulm, Albert-Einstein-Allee 23, 89075, Ulm, Deutschland
| |
Collapse
|
25
|
Kocher T, Holtfreter B, Petersmann A, Eickholz P, Hoffmann T, Kaner D, Kim T, Meyle J, Schlagenhauf U, Doering S, Gravemeier M, Prior K, Rathmann W, Harks I, Ehmke B, Koch R. Effect of Periodontal Treatment on HbA1c among Patients with Prediabetes. J Dent Res 2018; 98:171-179. [DOI: 10.1177/0022034518804185] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Evidence is limited regarding whether periodontal treatment improves hemoglobin A1c (HbA1c) among people with prediabetes and periodontal disease, and it is unknown whether improvement of metabolic status persists >3 mo. In an exploratory post hoc analysis of the multicenter randomized controlled trial “Antibiotika und Parodontitis” (Antibiotics and Periodontitis)—a prospective, stratified, double-blind study—we assessed whether nonsurgical periodontal treatment with or without an adjunctive systemic antibiotic treatment affects HbA1c and high-sensitivity C-reactive protein (hsCRP) levels among periodontitis patients with normal HbA1c (≤5.7%, n = 218), prediabetes (5.7% < HbA1c < 6.5%, n = 101), or unknown diabetes (HbA1c ≥ 6.5%, n = 8) over a period of 27.5 mo. Nonsurgical periodontal treatment reduced mean pocket probing depth by >1 mm in both groups. In the normal HbA1c group, HbA1c values remained unchanged at 5.0% (95% CI, 4.9% to 6.1%) during the observation period. Among periodontitis patients with prediabetes, HbA1c decreased from 5.9% (95% CI, 5.9% to 6.0%) to 5.4% (95% CI, 5.3% to 5.5%) at 15.5 mo and increased to 5.6% (95% CI, 5.4% to 5.7%) after 27.5 mo. At 27.5 mo, 46% of periodontitis patients with prediabetes had normal HbA1c levels, whereas 47.9% remained unchanged and 6.3% progressed to diabetes. Median hsCRP values were reduced in the normal HbA1c and prediabetes groups from 1.2 and 1.4 mg/L to 0.7 and 0.7 mg/L, respectively. Nonsurgical periodontal treatment may improve blood glucose values among periodontitis patients with prediabetes (ClinicalTrials.gov NCT00707369).
Collapse
Affiliation(s)
- T. Kocher
- Department of Restorative Dentistry, Periodontology, Endodontology, and Preventive and Pediatric Dentistry, Unit of Periodontology, University Medicine Greifswald, Greifswald, Germany
| | - B. Holtfreter
- Department of Restorative Dentistry, Periodontology, Endodontology, and Preventive and Pediatric Dentistry, Unit of Periodontology, University Medicine Greifswald, Greifswald, Germany
| | - A. Petersmann
- Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany
| | - P. Eickholz
- Department of Periodontology, Johann Wolfgang Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - T. Hoffmann
- Department of Periodontology, Faculty of Medicine, Carl Gustav Carus, Technical University of Dresden, Dresden, Germany
| | - D. Kaner
- Department of Periodontology, Witten/Herdecke University, Witten, Germany
- Department of Periodontology and Synoptic Dentistry, Charité Centrum 3, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - T.S. Kim
- Section of Periodontology, Department of Conservative Dentistry, University Hospital Heidelberg, Heidelberg, Germany
| | - J. Meyle
- Department of Periodontology, Justus-Liebig University Giessen, Giessen, Germany
| | - U. Schlagenhauf
- Department of Periodontology, University Hospital Würzburg, Würzburg, Germany
| | - S. Doering
- Department of Psychoanalysis and Psychotherapy, Medical University of Vienna, Vienna, Austria
| | - M. Gravemeier
- Department of Periodontology, University Hospital Münster, Münster, Germany
| | - K. Prior
- Department of Periodontology, University Hospital Münster, Münster, Germany
| | - W. Rathmann
- German Diabetes Center, Institute of Biometrics and Epidemiology, Düsseldorf, Germany
| | - I. Harks
- Department of Periodontology, University Hospital Münster, Münster, Germany
| | - B. Ehmke
- Department of Periodontology, University Hospital Münster, Münster, Germany
| | - R. Koch
- Institute of Biostatistics and Clinical Research, University of Münster, Münster, Germany
| |
Collapse
|
26
|
Ettrich T, Berger A, Decker T, Hofheinz R, Heinemann V, Hoffmann T, Hebart H, Herrmann T, Hannig CV, Büchner-Steudel P, Bartholomäus H, Güthle M, Perkhofer L, Seufferlein T. TRICC-C: Nintedanib vs. placebo in patients receiving mFOLFOX6 for metastatic, chemorefractory colorectal cancer: Final results from the randomized phase II trial of the AIO. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy281.110] [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: 11/13/2022] Open
|
27
|
Polzin A, Dannenberg L, Naguib D, Achilles A, Mourikis P, Zako S, Helten C, Konsek D, M'pembele R, Hohlfeld T, Kelm M, Zeus T, Sixt S, Albert A, Hoffmann T. P4189Effects of coagulase reaction on aggregation in patients with endocarditis. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- A Polzin
- Heinrich-Heine-University, Medical Faculty, Division of Cardiology, Pulmonology and Vascular Medicine, Düsseldorf, Germany
| | - L Dannenberg
- Heinrich-Heine-University, Medical Faculty, Division of Cardiology, Pulmonology and Vascular Medicine, Düsseldorf, Germany
| | - D Naguib
- Heinrich-Heine-University, Medical Faculty, Division of Cardiology, Pulmonology and Vascular Medicine, Düsseldorf, Germany
| | - A Achilles
- Heinrich-Heine-University, Medical Faculty, Division of Cardiology, Pulmonology and Vascular Medicine, Düsseldorf, Germany
| | - P Mourikis
- Heinrich-Heine-University, Medical Faculty, Division of Cardiology, Pulmonology and Vascular Medicine, Düsseldorf, Germany
| | - S Zako
- Heinrich-Heine-University, Medical Faculty, Division of Cardiology, Pulmonology and Vascular Medicine, Düsseldorf, Germany
| | - C Helten
- Heinrich-Heine-University, Medical Faculty, Division of Cardiology, Pulmonology and Vascular Medicine, Düsseldorf, Germany
| | - D Konsek
- Heinrich-Heine-University, Medical Faculty, Division of Cardiology, Pulmonology and Vascular Medicine, Düsseldorf, Germany
| | - R M'pembele
- Heinrich-Heine-University, Medical Faculty, Division of Cardiology, Pulmonology and Vascular Medicine, Düsseldorf, Germany
| | - T Hohlfeld
- Heinrich-Heine-University, Institute of Pharmacology and Clinical Pharmacology, Düsseldorf, Germany
| | - M Kelm
- Heinrich-Heine-University, CARID, Cardiovascular Research Institute Düsseldorf, Medical Faculty, Düsseldorf, Germany
| | - T Zeus
- Heinrich-Heine-University, Medical Faculty, Division of Cardiology, Pulmonology and Vascular Medicine, Düsseldorf, Germany
| | - S Sixt
- Heinrich-Heine-University, Medical Center, Department of Anesthesiology, Düsseldorf, Germany
| | - A Albert
- Heinrich-Heine-University, Medical Center, Clinic for Cardiovascular Surgery, Düsseldorf, Germany
| | - T Hoffmann
- Heinrich-Heine-University, Medical Center, Transfusion Medicine and Clinical Hemostaseology, Düsseldorf, Germany
| |
Collapse
|
28
|
Hoffmann T, Farcher M, Hutter-Paier B, Lemere CA, Schilling S, Lues I. P1‐099: COMBINATION OF A GLUTAMINYL CYCLASE INHIBITOR (PQ912) AND A PYROGLUTAMATE‐Aβ SPECIFIC ANTIBODY (PBD‐M06) SHOWS ADDITIVE EFFECTS IN A MOUSE MODEL WITH ALZHEIMER'S DISEASE‐LIKE PATHOLOGY. Alzheimers Dement 2018. [DOI: 10.1016/j.jalz.2018.06.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
29
|
Hoffmann T, Glasziou P, Boutron I, Milne R, Perera R, Moher D, Altman D, Barbour V, Macdonald H, Johnston M, Lamb S, Dixon-Woods M, McCulloch P, Wyatt J, Chan AW, Michie S. Die TIDieR Checkliste und Anleitung – ein Instrument für eine verbesserte Interventionsbeschreibung und Replikation. Gesundheitswesen 2018; 78:e174. [DOI: 10.1055/s-0037-1600948] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- T. Hoffmann
- Centre for Research in Evidence Based Practice, Faculty of Health Sciences and Medicine, Bond University, Queensland, Australia, 4229
| | - P. Glasziou
- Centre for Research in Evidence Based Practice, Faculty of Health Sciences and Medicine, Bond University, Queensland, Australia, 4229
| | - I. Boutron
- INSERMU738, Université Paris Descartes-Sorbonne Paris Cité, Paris, France
| | - R. Milne
- Wessex Institute, University of Southampton, Southampton, UK
| | - R. Perera
- Department of Primary Care Health Sciences, University of Oxford, UK
| | - D. Moher
- Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Canada
| | - D. Altman
- Centre for Statistics in Medicine, University of Oxford, UK
| | | | | | - M. Johnston
- Institute of Applied Health Sciences, University of Aberdeen, Aberdeen, UK
| | - S. Lamb
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Botnar Research Centre, University of Oxford, Oxford, UK
| | - M. Dixon-Woods
- Department of Health Sciences, University of Leicester, Leicester, UK
| | - P. McCulloch
- Nuffield Department of Surgical Science, University of Oxford, Oxford, UK
| | - J. Wyatt
- Leeds Institute of Health Sciences, University of Leeds, Leeds, UK
| | - A.-W. Chan
- Women’s College Research Institute, University of Toronto, Toronto, Canada
| | - S. Michie
- Centre for Outcomes Research and Effectiveness, Department of Clinical, Educational and Health Psychology, University College London, London, UK
| |
Collapse
|
30
|
Abstract
SummaryWe have performed a monocenter study on 29 consecutive patients with acquired haemophilia A who were referred for diagnosis and treatment to the Düsseldorf Haemophilia Comprehensive Care Center between March 2001 and February 2010. Patients, methods: 18 men (age: 44–86 years) and 11 women (age: 20–83 years). For laboratory evaluation, a standardized staged protocol of aPTT, FVIII : C activity and concentration, mixing studies with patient and normal plasma, and quantification of inhibitor titers (Bethesda assay) was used. Diagnostic work-up included elaborate examinations for any underlying disease. Results: In 18 (62%) of the 29 patients with acquired haemophilia A, an underlying disorder was identified, including 9 patients with respiratory diseases (31%), 7 patients with autoimmune disorders (24%), one with malignancy, and one with postpartum state, while in 11 patients (38%) acquired haemophilia A remained idiopathic. Haemotherapy of bleeding, suppression or elimination of the inhibitor, and induction of immunotolerance to endogenous FVIII:C were performed according to a treatment algorithm. Predefined clinical endpoints were control of bleeding, eradication of the inhibitor, complete or partial remission (CR, PR), relapse, or early death (≤30 days). Of the 29 patients in total, 22 individuals achieved CR (76%), three had PR, one relapsed, and three died within 30 days (one of acute myocardial infarction while on anti-haemorrhagic treatment, one of sepsis while on immunosuppression due to active acquired haemophilia A, one of lung bleeding in association with pre-existing pulmonary sarcoidosis). Conclusion: This monocenter study demonstrates that control of life-threatening bleeding, eradication of the inhibitor, and induction of tolerance to endogenous FVIII have significantly improved the clinical outcome of acquired haemophilia A. Our data also suggest a shift in underlying disorders associated with acquired haemophilia A, whereby, in comparison to published studies, a relative increase in the proportion of patients with respiratory diseases is present.
Collapse
|
31
|
Peter B, Bibi S, Eisenwort G, Wingelhofer B, Berger D, Stefanzl G, Blatt K, Herrmann H, Hadzijusufovic E, Hoermann G, Hoffmann T, Schwaab J, Jawhar M, Willmann M, Sperr WR, Zuber J, Sotlar K, Horny HP, Moriggl R, Reiter A, Arock M, Valent P. Drug-induced inhibition of phosphorylation of STAT5 overrides drug resistance in neoplastic mast cells. Leukemia 2017; 32:1016-1022. [PMID: 29249817 PMCID: PMC6037300 DOI: 10.1038/leu.2017.338] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 10/31/2017] [Accepted: 11/13/2017] [Indexed: 12/20/2022]
Abstract
Systemic mastocytosis (SM) is a mast cell (MC) neoplasm with complex pathology and a variable clinical course. In aggressive SM (ASM) and MC leukemia (MCL) responses to conventional drugs are poor and the prognosis is dismal. R763 is a multi-kinase inhibitor that blocks the activity of Aurora-kinase-A/B, ABL1, AKT and FLT3. We examined the effects of R763 on proliferation and survival of neoplastic MC. R763 produced dose-dependent inhibition of proliferation in the human MC lines HMC-1.1 (IC50 5-50 nM), HMC-1.2 (IC50 1-10 nM), ROSAKIT WT (IC50 1-10 nM), ROSAKIT D816V (IC50 50-500 nM) and MCPV-1.1 (IC50 100-1000 nM). Moreover, R763 induced growth inhibition in primary neoplastic MC in patients with ASM and MCL. Growth-inhibitory effects of R763 were accompanied by signs of apoptosis and a G2/M cell cycle arrest. R763 also inhibited phosphorylation of KIT, BTK, AKT and STAT5 in neoplastic MC. The most sensitive target appeared to be STAT5. In fact, tyrosine phosphorylation of STAT5 was inhibited by R763 at 10 nM. At this low concentration, R763 produced synergistic growth-inhibitory effects on neoplastic MC when combined with midostaurin or dasatinib. Together, R763 is a novel promising multi-kinase inhibitor that blocks STAT5 activation and thereby overrides drug-resistance in neoplastic MC.
Collapse
Affiliation(s)
- B Peter
- Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna, Austria.,Department of Internal Medicine I, Division of Hematology & Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - S Bibi
- Laboratoire de Biologie et Pharmacologie Appliquée, CNRS UMR 8113, Ecole Normale Superieure de Cachan, Cachan, France
| | - G Eisenwort
- Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna, Austria.,Department of Internal Medicine I, Division of Hematology & Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - B Wingelhofer
- Ludwig Boltzmann Institute for Cancer Research, Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Medical University of Vienna, Vienna, Austria
| | - D Berger
- Department of Internal Medicine I, Division of Hematology & Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - G Stefanzl
- Department of Internal Medicine I, Division of Hematology & Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - K Blatt
- Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna, Austria.,Department of Internal Medicine I, Division of Hematology & Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - H Herrmann
- Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna, Austria
| | - E Hadzijusufovic
- Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna, Austria.,Department of Internal Medicine I, Division of Hematology & Hemostaseology, Medical University of Vienna, Vienna, Austria.,Department for Companion Animals and Horses, Clinical Unit of Internal Medicine, University of Veterinary Medicine Vienna, Vienna, Austria
| | - G Hoermann
- Department of Laboratory Medicine, Medical University of Vienna, Vienna,Austria
| | - T Hoffmann
- Research Institute of Molecular Pathology (IMP), Vienna, Austria
| | - J Schwaab
- Department of Hematology and Oncology, University Medical Center Mannheim and Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - M Jawhar
- Department of Hematology and Oncology, University Medical Center Mannheim and Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - M Willmann
- Department for Companion Animals and Horses, Clinical Unit of Internal Medicine, University of Veterinary Medicine Vienna, Vienna, Austria
| | - W R Sperr
- Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna, Austria.,Department of Internal Medicine I, Division of Hematology & Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - J Zuber
- Research Institute of Molecular Pathology (IMP), Vienna, Austria
| | - K Sotlar
- University Institute of Pathology, University Hospital Salzburg, Paracelsus Medical University, Salzburg, Austria
| | - H-P Horny
- Institute of Pathology, Ludwig-Maximilians-University, Munich, Germany
| | - R Moriggl
- Ludwig Boltzmann Institute for Cancer Research, Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Medical University of Vienna, Vienna, Austria
| | - A Reiter
- Department of Hematology and Oncology, University Medical Center Mannheim and Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - M Arock
- Laboratoire de Biologie et Pharmacologie Appliquée, CNRS UMR 8113, Ecole Normale Superieure de Cachan, Cachan, France.,Laboratory of Hematology, Pitié-Salpêtrière Hospital, Paris, France
| | - P Valent
- Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna, Austria.,Department of Internal Medicine I, Division of Hematology & Hemostaseology, Medical University of Vienna, Vienna, Austria
| |
Collapse
|
32
|
Nissen TN, Birk NM, Blok BA, Arts RJW, Andersen A, Kjærgaard J, Thøstesen LM, Hoffmann T, Jeppesen DL, Nielsen SD, Kofoed PE, Stensballe LG, Aaby P, Ruhwald M, Netea MG, Benn CS, Pryds O. Bacillus Calmette-Guérin vaccination at birth and in vitro cytokine responses to non-specific stimulation. A randomized clinical trial. Eur J Clin Microbiol Infect Dis 2017; 37:29-41. [PMID: 28890996 DOI: 10.1007/s10096-017-3097-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 08/21/2017] [Indexed: 11/29/2022]
Abstract
Several studies have shown increased in vitro cytokine responses to non-related pathogens after Bacillus Calmette-Guérin (BCG) vaccination. A total of 158 infants (80 BCG administered within 7 days of birth; 78 controls) were bled 4 days post-randomization, and at age 3 and 13 months. Geometric mean concentrations of IL-1β, TNF-α, IL-6 (24 h stimulation) and IFN-γ, IL-10, IL-17, IL-22 (96 h stimulation) in response to in vitro stimulation with RPMI, LPS, PHA, Escherichia coli, Streptococcus pneumoniae, Candida albicans and BCG were compared among BCG vaccinated children and controls. BCG vaccination did not affect in vitro cytokine production, except IFN-γ and IL-22 response to BCG. Stratifying for 'age at randomization' we found a potentiating effect of BCG on cytokine production (TNF-α, IL-6, IL-10) in the 4 days post randomization stimulations, among children who were vaccinated at age 2-7 days versus age 0-1 days. BCG vaccination did not potentiate cytokine production to non-BCG antigens. At 4 days post randomization, BCG was associated with higher cytokine production in the later randomized children.
Collapse
Affiliation(s)
- T N Nissen
- Department of Pediatrics, 460, Copenhagen University Hospital, Kettegaard Allé 30, DK-2650, Hvidovre, Denmark.
| | - N M Birk
- Department of Pediatrics, 460, Copenhagen University Hospital, Kettegaard Allé 30, DK-2650, Hvidovre, Denmark
| | - B A Blok
- Division of Experimental Internal Medicine, Department of Internal Medicine, Radboud University Medical Center and Radboud Center for Infectious Diseases, Geert Grooteplein 10, 6525GA, Nijmegen, The Netherlands.,Research Center for Vitamins and Vaccines (CVIVA), Bandim Health Project, Statens Serum Institut, Artillerivej 5, DK-2300, Copenhagen S, Denmark.,Odense Patient data Explorative Network, Odense University Hospital/Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - R J W Arts
- Division of Experimental Internal Medicine, Department of Internal Medicine, Radboud University Medical Center and Radboud Center for Infectious Diseases, Geert Grooteplein 10, 6525GA, Nijmegen, The Netherlands
| | - A Andersen
- Research Center for Vitamins and Vaccines (CVIVA), Bandim Health Project, Statens Serum Institut, Artillerivej 5, DK-2300, Copenhagen S, Denmark
| | - J Kjærgaard
- The Child and Adolescent Clinic 4072, Juliane Marie Centret, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, DK-2100, Copenhagen Ø, Denmark
| | - L M Thøstesen
- Department of Pediatrics, Kolding Hospital, Skovvangen 2-8, DK-6000, Kolding, Denmark
| | - T Hoffmann
- Department of Pediatrics, 460, Copenhagen University Hospital, Kettegaard Allé 30, DK-2650, Hvidovre, Denmark
| | - D L Jeppesen
- Department of Pediatrics, 460, Copenhagen University Hospital, Kettegaard Allé 30, DK-2650, Hvidovre, Denmark
| | - S D Nielsen
- Viro-immunology Research Unit, Department of Infectious Diseases, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, DK-2100, Copenhagen Ø, Denmark
| | - P-E Kofoed
- Department of Pediatrics, Kolding Hospital, Skovvangen 2-8, DK-6000, Kolding, Denmark
| | - L G Stensballe
- The Child and Adolescent Clinic 4072, Juliane Marie Centret, Rigshospitalet, Copenhagen University Hospital, Blegdamsvej 9, DK-2100, Copenhagen Ø, Denmark
| | - P Aaby
- Research Center for Vitamins and Vaccines (CVIVA), Bandim Health Project, Statens Serum Institut, Artillerivej 5, DK-2300, Copenhagen S, Denmark
| | - M Ruhwald
- Human Immunology, Infectious Disease Immunology, Division of Vaccine, Statens Serum Institut, DK-2300, Artillerivej 5, Denmark
| | - M G Netea
- Division of Experimental Internal Medicine, Department of Internal Medicine, Radboud University Medical Center and Radboud Center for Infectious Diseases, Geert Grooteplein 10, 6525GA, Nijmegen, The Netherlands
| | - C S Benn
- Research Center for Vitamins and Vaccines (CVIVA), Bandim Health Project, Statens Serum Institut, Artillerivej 5, DK-2300, Copenhagen S, Denmark.,Odense Patient data Explorative Network, Odense University Hospital/Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - O Pryds
- Department of Pediatrics, 460, Copenhagen University Hospital, Kettegaard Allé 30, DK-2650, Hvidovre, Denmark
| |
Collapse
|
33
|
Helten C, Mohring A, Rehder S, Dannenberg L, Piayda K, Kelm M, Zeus T, Hoffmann T, Polzin A. P5366Four tests, four results: monitoring platelet reactivity in patients on aspirin and clopidogrel therapy. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5366] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
34
|
Lindemann J, Hoffmann T, Koehl A, Walz EM, Sommer F. Influence of cooling face masks on nasal air conditioning and nasal geometry. Rhinology 2017; 55:120-125. [PMID: 28029166 DOI: 10.4193/rhin16.212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
INTRODUCTION Nasal geometries and temperature of the nasal mucosa are the primary factors affecting nasal air conditioning. Data on intranasal air conditioning after provoking the trigeminal nerve with a cold stimulus simulating the effects of an arctic condition is still missing. The objective was to investigate the influence of skin cooling face masks on nasal air conditioning, mucosal temperature and nasal geometry. METHODS Standardized in vivo measurements of intranasal air temperature, humidity and mucosal temperature were performed in 55 healthy subjects at defined detection sites before and after wearing a cooling face mask. Measurements of skin temperature, rhinomanometry and acoustic rhinometry were accomplished. RESULTS After wearing the face mask the facial skin temperature was significantly reduced. Intranasal air temperature did not change. Absolute humidity and mucosal temperature increased significantly. The acoustic rhinometric results showed a significant increase of the volumes and the cross-sectional areas. There was no change in nasal airflow. CONCLUSIONS Nasal mucosal temperature, humidity of inhaled air, and volume of the anterior nose increased after application of a cold face mask. The response is mediated by the trigeminal nerve. Increased mucosal temperatures as well as changes in nasal geometries seem to guarantee sufficient steady intranasal nasal air conditioning.
Collapse
Affiliation(s)
- J Lindemann
- Department of Otorhinolaryngology, University of Ulm, Ulm, Germany
| | - T Hoffmann
- Department of Otorhinolaryngology, University of Ulm, Ulm, Germany
| | - A Koehl
- Department of Otorhinolaryngology, Hospital of Magdeburg, Magdeburg, Germany
| | - E M Walz
- Department of Otorhinolaryngology, University of Ulm, Ulm, Germany
| | - F Sommer
- Department of Otorhinolaryngology, University of Ulm, Ulm, Germany
| |
Collapse
|
35
|
Bridel C, Hoffmann T, Meyer A, Durieux S, Koel-Simmelink MA, Orth M, Scheltens P, Lues I, Teunissen CE. Glutaminyl cyclase activity correlates with levels of Aβ peptides and mediators of angiogenesis in cerebrospinal fluid of Alzheimer's disease patients. Alzheimers Res Ther 2017; 9:38. [PMID: 28587659 PMCID: PMC5461753 DOI: 10.1186/s13195-017-0266-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 05/09/2017] [Indexed: 01/01/2023]
Abstract
Background Pyroglutamylation of truncated Aβ peptides, which is catalysed by enzyme glutaminyl cyclase (QC), generates pE-Aβ species with enhanced aggregation propensities and resistance to most amino-peptidases and endo-peptidases. pE-Aβ species have been identified as major constituents of Aβ plaques and reduction of pE-Aβ species is associated with improvement of cognitive tasks in animal models of Alzheimer’s disease (AD). Pharmacological inhibition of QC has thus emerged as a promising therapeutic approach for AD. Here, we question whether cerebrospinal fluid (CSF) QC enzymatic activity differs between AD patients and controls and whether inflammatory or angiogenesis mediators, some of which are potential QC substrates, and/or Aβ peptides may serve as pharmacodynamic read-outs for QC inhibition. Methods QC activity, Aβ peptides and inflammatory or angiogenesis mediators were measured in CSF of a clinically well-characterized cohort of 20 mild AD patients, 20 moderate AD patients and 20 subjective memory complaints (SMC) controls. Correlation of these parameters with core diagnostic CSF AD biomarkers (Aβ42, tau and p-tau) and clinical features was evaluated. Results QC activity shows a tendency to decrease with AD progression (p = 0.129). The addition of QC activity to biomarkers tau and p-tau significantly increases diagnostic power (ROC-AUCTAU = 0.878, ROC-AUCTAU&QC = 0.939 and ROC-AUCpTAU = 0.820, ROC-AUCpTAU&QC = 0.948). In AD and controls, QC activity correlates with Aβ38 (r = 0.83, p < 0.0001) and Aβ40 (r = 0.84, p < 0.0001), angiogenesis mediators (Flt1, Tie2, VEGFD, VCAM-1 and ICAM-1, r > 0.5, p < 0.0001) and core diagnostic biomarkers (r > 0.35, p = <0.0057). QC activity does not correlate with MMSE or ApoE genotype. Conclusions Aβ38, Aβ40 and angiogenesis mediators (Flt1, Tie2, VEGFD, VCAM-1 and ICAM-1) are potential pharmacodynamic markers of QC inhibition, because their levels closely correlate with QC activity in AD patients. The addition of QC activity to core diagnostic CSF biomarkers may be of specific interest in clinical cases with discordant imaging and biochemical biomarker results. Electronic supplementary material The online version of this article (doi:10.1186/s13195-017-0266-6) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Claire Bridel
- Neurochemistry Lab and Biobank, Department of Clinical Chemistry, VU University Medical Centre Amsterdam, Amsterdam, The Netherlands.
| | | | | | - Sisi Durieux
- Neurochemistry Lab and Biobank, Department of Clinical Chemistry, VU University Medical Centre Amsterdam, Amsterdam, The Netherlands
| | - Marleen A Koel-Simmelink
- Neurochemistry Lab and Biobank, Department of Clinical Chemistry, VU University Medical Centre Amsterdam, Amsterdam, The Netherlands
| | | | - Philip Scheltens
- Department of Neurology, Alzheimer Center, VU University Medical Centre Amsterdam, Amsterdam, The Netherlands
| | - Inge Lues
- Probiodrug AG, Halle (Saale), Germany
| | - Charlotte E Teunissen
- Neurochemistry Lab and Biobank, Department of Clinical Chemistry, VU University Medical Centre Amsterdam, Amsterdam, The Netherlands.
| |
Collapse
|
36
|
Holze S, Krüger B, Hoffmann T, Bück A, Schwidder M. Influence of TiO2
-Layer Thickness of Spray-Coated Glass Beads on Their Photocatalytic Performance. Chem Eng Technol 2017. [DOI: 10.1002/ceat.201600432] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Susann Holze
- Otto von Guericke University; Institute of Chemistry; Universitätsplatz 2 39106 Magdeburg Germany
| | - Benjamin Krüger
- Otto von Guericke University; Institute of Chemistry; Universitätsplatz 2 39106 Magdeburg Germany
| | - Torsten Hoffmann
- Otto von Guericke University; Institute of Thermal Process Engineering; Universitätsplatz 2 39106 Magdeburg Germany
| | - Andreas Bück
- Otto von Guericke University; Institute of Thermal Process Engineering; Universitätsplatz 2 39106 Magdeburg Germany
| | - Michael Schwidder
- Otto von Guericke University; Institute of Chemistry; Universitätsplatz 2 39106 Magdeburg Germany
| |
Collapse
|
37
|
Hoffmann T, Meyer A, Heiser U, Kurat S, Böhme L, Kleinschmidt M, Bühring KU, Hutter-Paier B, Farcher M, Demuth HU, Lues I, Schilling S. Glutaminyl Cyclase Inhibitor PQ912 Improves Cognition in Mouse Models of Alzheimer's Disease-Studies on Relation to Effective Target Occupancy. J Pharmacol Exp Ther 2017; 362:119-130. [PMID: 28446518 DOI: 10.1124/jpet.117.240614] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 04/24/2017] [Indexed: 12/22/2022] Open
Abstract
Numerous studies suggest that the majority of amyloid-β (Aβ) peptides deposited in Alzheimer's disease (AD) are truncated and post-translationally modified at the N terminus. Among these modified species, pyroglutamyl-Aβ (pE-Aβ, including N3pE-Aβ40/42 and N11pE-Aβ40/42) has been identified as particularly neurotoxic. The N-terminal modification renders the peptide hydrophobic, accelerates formation of oligomers, and reduces degradation by peptidases, leading ultimately to the accumulation of the peptide and progression of AD. It has been shown that the formation of pyroglutamyl residues is catalyzed by glutaminyl cyclase (QC). Here, we present data about the pharmacological in vitro and in vivo efficacy of the QC inhibitor (S)-1-(1H-benzo[d]imidazol-5-yl)-5-(4-propoxyphenyl)imidazolidin-2-one (PQ912), the first-in-class compound that is in clinical development. PQ912 inhibits human, rat, and mouse QC activity, with Ki values ranging between 20 and 65 nM. Chronic oral treatment of hAPPSLxhQC double-transgenic mice with approximately 200 mg/kg/day via chow shows a significant reduction of pE-Aβ levels and concomitant improvement of spatial learning in a Morris water maze test paradigm. This dose results in a brain and cerebrospinal fluid concentration of PQ912 which relates to a QC target occupancy of about 60%. Thus, we conclude that >50% inhibition of QC activity in the brain leads to robust treatment effects. Secondary pharmacology experiments in mice indicate a fairly large potency difference for Aβ cyclization compared with cyclization of physiologic substrates, suggesting a robust therapeutic window in humans. This information constitutes an important translational guidance for predicting the therapeutic dose range in clinical studies with PQ912.
Collapse
Affiliation(s)
- Torsten Hoffmann
- Probiodrug AG, Halle, Germany (T.H., A.M., U.H., L.B., K.-U.B., I.L.); QPS Austria, Grambach, Austria (S.K., B.H.-P., M.F.); and Fraunhofer Institute for Cell Therapy and Immunology, Department for Drug Design and Target Validation, Halle, Germany (M.K., H.-U.D., S.S.)
| | - Antje Meyer
- Probiodrug AG, Halle, Germany (T.H., A.M., U.H., L.B., K.-U.B., I.L.); QPS Austria, Grambach, Austria (S.K., B.H.-P., M.F.); and Fraunhofer Institute for Cell Therapy and Immunology, Department for Drug Design and Target Validation, Halle, Germany (M.K., H.-U.D., S.S.)
| | - Ulrich Heiser
- Probiodrug AG, Halle, Germany (T.H., A.M., U.H., L.B., K.-U.B., I.L.); QPS Austria, Grambach, Austria (S.K., B.H.-P., M.F.); and Fraunhofer Institute for Cell Therapy and Immunology, Department for Drug Design and Target Validation, Halle, Germany (M.K., H.-U.D., S.S.)
| | - Stephan Kurat
- Probiodrug AG, Halle, Germany (T.H., A.M., U.H., L.B., K.-U.B., I.L.); QPS Austria, Grambach, Austria (S.K., B.H.-P., M.F.); and Fraunhofer Institute for Cell Therapy and Immunology, Department for Drug Design and Target Validation, Halle, Germany (M.K., H.-U.D., S.S.)
| | - Livia Böhme
- Probiodrug AG, Halle, Germany (T.H., A.M., U.H., L.B., K.-U.B., I.L.); QPS Austria, Grambach, Austria (S.K., B.H.-P., M.F.); and Fraunhofer Institute for Cell Therapy and Immunology, Department for Drug Design and Target Validation, Halle, Germany (M.K., H.-U.D., S.S.)
| | - Martin Kleinschmidt
- Probiodrug AG, Halle, Germany (T.H., A.M., U.H., L.B., K.-U.B., I.L.); QPS Austria, Grambach, Austria (S.K., B.H.-P., M.F.); and Fraunhofer Institute for Cell Therapy and Immunology, Department for Drug Design and Target Validation, Halle, Germany (M.K., H.-U.D., S.S.)
| | - Karl-Ulrich Bühring
- Probiodrug AG, Halle, Germany (T.H., A.M., U.H., L.B., K.-U.B., I.L.); QPS Austria, Grambach, Austria (S.K., B.H.-P., M.F.); and Fraunhofer Institute for Cell Therapy and Immunology, Department for Drug Design and Target Validation, Halle, Germany (M.K., H.-U.D., S.S.)
| | - Birgit Hutter-Paier
- Probiodrug AG, Halle, Germany (T.H., A.M., U.H., L.B., K.-U.B., I.L.); QPS Austria, Grambach, Austria (S.K., B.H.-P., M.F.); and Fraunhofer Institute for Cell Therapy and Immunology, Department for Drug Design and Target Validation, Halle, Germany (M.K., H.-U.D., S.S.)
| | - Martina Farcher
- Probiodrug AG, Halle, Germany (T.H., A.M., U.H., L.B., K.-U.B., I.L.); QPS Austria, Grambach, Austria (S.K., B.H.-P., M.F.); and Fraunhofer Institute for Cell Therapy and Immunology, Department for Drug Design and Target Validation, Halle, Germany (M.K., H.-U.D., S.S.)
| | - Hans-Ulrich Demuth
- Probiodrug AG, Halle, Germany (T.H., A.M., U.H., L.B., K.-U.B., I.L.); QPS Austria, Grambach, Austria (S.K., B.H.-P., M.F.); and Fraunhofer Institute for Cell Therapy and Immunology, Department for Drug Design and Target Validation, Halle, Germany (M.K., H.-U.D., S.S.)
| | - Inge Lues
- Probiodrug AG, Halle, Germany (T.H., A.M., U.H., L.B., K.-U.B., I.L.); QPS Austria, Grambach, Austria (S.K., B.H.-P., M.F.); and Fraunhofer Institute for Cell Therapy and Immunology, Department for Drug Design and Target Validation, Halle, Germany (M.K., H.-U.D., S.S.)
| | - Stephan Schilling
- Probiodrug AG, Halle, Germany (T.H., A.M., U.H., L.B., K.-U.B., I.L.); QPS Austria, Grambach, Austria (S.K., B.H.-P., M.F.); and Fraunhofer Institute for Cell Therapy and Immunology, Department for Drug Design and Target Validation, Halle, Germany (M.K., H.-U.D., S.S.)
| |
Collapse
|
38
|
Noack B, Kipping T, Tervahartiala T, Sorsa T, Hoffmann T, Lorenz K. Association between serum and oral matrix metalloproteinase-8 levels and periodontal health status. J Periodontal Res 2017; 52:824-831. [DOI: 10.1111/jre.12450] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/28/2016] [Indexed: 01/22/2023]
Affiliation(s)
- B. Noack
- Department of Periodontology; Medical Faculty Carl Gustav Carus; TU Dresden; Dresden Germany
| | - T. Kipping
- Department of Periodontology; Medical Faculty Carl Gustav Carus; TU Dresden; Dresden Germany
| | - T. Tervahartiala
- Department of Oral and Maxillofacial Diseases; University of Helsinki and Helsinki University Hospital; Helsinki Finland
| | - T. Sorsa
- Department of Oral and Maxillofacial Diseases; University of Helsinki and Helsinki University Hospital; Helsinki Finland
- Division of Periodontology; Department of Dental Medicine; Karolinska Institutet; Huddinge Sweden
| | - T. Hoffmann
- Department of Periodontology; Medical Faculty Carl Gustav Carus; TU Dresden; Dresden Germany
| | - K. Lorenz
- Department of Periodontology; Medical Faculty Carl Gustav Carus; TU Dresden; Dresden Germany
| |
Collapse
|
39
|
Assmann A, Albert A, Dierksen A, Roussel E, Sixt S, Lichtenberg A, Hoffmann T. Very Low-Dose Recombinant Activated Factor VIIa: A Paradigm Shift in Major Bleeding Therapy? Thorac Cardiovasc Surg 2017. [DOI: 10.1055/s-0037-1598933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- A. Assmann
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery, Medical Faculty, Heinrich Heine University, Duesseldorf, Germany
| | - A. Albert
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery, Medical Faculty, Heinrich Heine University, Duesseldorf, Germany
| | - A. Dierksen
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery, Medical Faculty, Heinrich Heine University, Duesseldorf, Germany
| | - E. Roussel
- Heinrich Heine University, Medical Faculty, Institute of Haemostaseology, Haemotherapy and Transfusion Medicine, Medical Faculty, Heinrich Heine University, Duesseldorf, Germany
| | - S. Sixt
- Heinrich Heine University, Medical Faculty, Department of Anaesthesiology, Medical Faculty, Heinrich Heine University, Duesseldorf, Germany
| | - A. Lichtenberg
- Department of Cardiovascular Surgery and Research Group for Experimental Surgery, Medical Faculty, Heinrich Heine University, Duesseldorf, Germany
| | - T. Hoffmann
- Heinrich Heine University, Medical Faculty, Institute of Haemostaseology, Haemotherapy and Transfusion Medicine, Medical Faculty, Heinrich Heine University, Duesseldorf, Germany
| |
Collapse
|
40
|
Hoffmann T. [CASH - Computer-assisted surgery around the head. Part 2]. HNO 2016; 65:6. [PMID: 27913824 DOI: 10.1007/s00106-016-0307-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- T Hoffmann
- Klinik für Hals-, Nasen-, Ohrenheilkunde, Kopf und Halschirurgie, Universitätsklinik Ulm, Frauensteige 12, 89075, Ulm, Deutschland.
| |
Collapse
|
41
|
Vergalli J, Carlet M, Hoffmann T, Roth M, Zuber J, Jeremias I. X-Linked inhibitor of apoptosis protein (XIAP) exhibits an essential role of patients' acute lymphoblastic leukemia cells growing in vivo. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)32762-9] [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: 10/20/2022]
|
42
|
Yamato T, Maher C, Saragiotto B, Moseley A, Hoffmann T, Elkins M, Heise K. Die TIDieR-Checkliste wird der physiotherapeutischen Profession nutzen. physioscience 2016. [DOI: 10.1055/s-0035-1567125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- T. Yamato
- Musculoskeletal Division, The George Institute for Global Health, Sydney Medical School, The University of Sydney, Australia
| | - C. Maher
- Musculoskeletal Division, The George Institute for Global Health, Sydney Medical School, The University of Sydney, Australia
| | - B. Saragiotto
- Musculoskeletal Division, The George Institute for Global Health, Sydney Medical School, The University of Sydney, Australia
| | - A. Moseley
- Musculoskeletal Division, The George Institute for Global Health, Sydney Medical School, The University of Sydney, Australia
| | - T. Hoffmann
- Centre for Research in Evidence Based Practice, Faculty of Health Sciences and Medicine, Bond University, Queensland, Australia
| | - M. Elkins
- International Society of Physiotherapy Journal Editors
| | - K. Heise
- Department of Kinesiology – Movement Control & Neuroplasticity Research Group, Leuven, Belgium
| |
Collapse
|
43
|
Hoffmann T. [CASH - Computer-assisted surgery around the head]. HNO 2016; 64:624. [PMID: 27566368 DOI: 10.1007/s00106-016-0223-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- T Hoffmann
- Klinik für Hals-, Nasen-, Ohrenheilkunde, Kopf- und Halschirurgie, Universitätsklinik Ulm, Frauensteige 12, 89075, Ulm, Deutschland.
| |
Collapse
|
44
|
Wagner L, Kaestner F, Wolf R, Stiller H, Heiser U, Manhart S, Hoffmann T, Rahfeld JU, Demuth HU, Rothermundt M, von Hörsten S. Identifying neuropeptide Y (NPY) as the main stress-related substrate of dipeptidyl peptidase 4 (DPP4) in blood circulation. Neuropeptides 2016; 57:21-34. [PMID: 26988064 DOI: 10.1016/j.npep.2016.02.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 01/21/2016] [Accepted: 02/25/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND Dipeptidyl peptidase 4 (DPP4; EC 3.4.14.5; CD26) is a membrane-bound or shedded serine protease that hydrolyzes dipeptides from the N-terminus of peptides with either proline or alanine at the penultimate position. Substrates of DPP4 include several stress-related neuropeptides implicated in anxiety, depression and schizophrenia. A decline of DPP4-like activity has been reported in sera from depressed patient, but not fully characterized regarding DPP4-like enzymes, therapeutic interventions and protein. METHODS Sera from 16 melancholic- and 16 non-melancholic-depressed patients were evaluated for DPP4-like activities and the concentration of soluble DPP4 protein before and after treatment by anti-depressive therapies. Post-translational modification of DPP4-isoforms and degradation of NPY, Peptide YY (PYY), Galanin-like peptide (GALP), Orexin B (OrxB), OrxA, pituitary adenylate cyclase-activating polypeptide (PACAP) and substance P (SP) were studied in serum and in ex vivo human blood. N-terminal truncation of biotinylated NPY by endothelial membrane-bound DPP4 versus soluble DPP4 was determined in rat brain perfusates and spiked sera. RESULTS Lower DPP4 activities in depressed patients were reversed by anti-depressive treatment. In sera, DPP4 contributed to more than 90% of the overall DPP4-like activity and correlated with its protein concentration. NPY displayed equal degradation in serum and blood, and was equally truncated by serum and endothelial DPP4. In addition, GALP and rat OrxB were identified as novel substrates of DPP4. CONCLUSION NPY is the best DPP4-substrate in blood, being truncated by soluble and membrane DPP4, respectively. The decline of soluble DPP4 in acute depression could be reversed upon anti-depressive treatment. Peptidases from three functional compartments regulate the bioactivity of NPY in blood.
Collapse
Affiliation(s)
- Leona Wagner
- Deutschsprachige Selbsthilfegruppe für Alkaptonurie (DSAKU) e,V., Stuttgart, Germany; Probiodrug AG, Halle, Germany; Universitätsklinikum Erlangen, Department of Experimental Therapy, Erlangen, Germany.
| | - Florian Kaestner
- Department of Psychiatry, University of Münster, Münster, Germany
| | - Raik Wolf
- Center for Clinical Chemistry, Microbiology and Transfusion, Klinikum St. Georg gGmbH, Germany; Probiodrug AG, Halle, Germany
| | | | | | | | - Torsten Hoffmann
- Center for Clinical Chemistry, Microbiology and Transfusion, Klinikum St. Georg gGmbH, Germany
| | - Jens-Ulrich Rahfeld
- Fraunhofer-Institute for Cell Therapy and Immunology, Department of Drug Design and Target Validation, 06120 Halle, Germany
| | - Hans-Ulrich Demuth
- Fraunhofer-Institute for Cell Therapy and Immunology, Department of Drug Design and Target Validation, 06120 Halle, Germany
| | - Matthias Rothermundt
- Department of Psychiatry, University of Münster, Münster, Germany; St. Rochus-Hospital Telgte, 48291 Telgte, Germany
| | - Stephan von Hörsten
- Universitätsklinikum Erlangen, Department of Experimental Therapy, Erlangen, Germany.
| |
Collapse
|
45
|
Lorenz K, Keller T, Noack B, Freitag A, Netuschil L, Hoffmann T. Evaluation of a novel point-of-care test for active matrix metalloproteinase-8: agreement between qualitative and quantitative measurements and relation to periodontal inflammation. J Periodontal Res 2016; 52:277-284. [DOI: 10.1111/jre.12392] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2016] [Indexed: 02/03/2023]
Affiliation(s)
- K. Lorenz
- Department of Periodontology; Faculty of Medicine Carl Gustav Carus; Technische Universität Dresden; Dresden Germany
| | | | - B. Noack
- Department of Periodontology; Faculty of Medicine Carl Gustav Carus; Technische Universität Dresden; Dresden Germany
| | - A. Freitag
- Department of Periodontology; Faculty of Medicine Carl Gustav Carus; Technische Universität Dresden; Dresden Germany
| | - L. Netuschil
- Department of Periodontology; Faculty of Medicine Carl Gustav Carus; Technische Universität Dresden; Dresden Germany
| | - T. Hoffmann
- Department of Periodontology; Faculty of Medicine Carl Gustav Carus; Technische Universität Dresden; Dresden Germany
| |
Collapse
|
46
|
Braun M, Rauneker T, Dreyhaupt J, Hoffmann T, Luthardt R, Dammann F, Beer M. Digitale Volumentomografie (DVT) der Kieferregion – Häufigkeit von Zufallsbefunden und deren klinische Relevanz. ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
47
|
Hoffmann T, Negri L, Maftei D, Lattanzi R, Reeh P. The prokineticin Bv8 sensitizes cutaneous terminals of female mice to heat. Eur J Pain 2016; 20:1326-34. [DOI: 10.1002/ejp.857] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/17/2015] [Indexed: 01/31/2023]
Affiliation(s)
- T. Hoffmann
- Institute for Physiology and Pathophysiology; University of Erlangen-Nuremberg; Germany
| | - L. Negri
- Department of Physiology and Pharmacology; Sapienza University of Rome; Italy
| | - D. Maftei
- Department of Physiology and Pharmacology; Sapienza University of Rome; Italy
| | - R. Lattanzi
- Department of Physiology and Pharmacology; Sapienza University of Rome; Italy
| | - P.W. Reeh
- Institute for Physiology and Pathophysiology; University of Erlangen-Nuremberg; Germany
| |
Collapse
|
48
|
Schulz MC, Kallweit MB, Kallweit S, Koch R, Lauer G, Mai R, Hoffmann T. Autogenous bone and a bovine bone substitute for ridge preservation: preliminary clinical and histologic findings. Aust Dent J 2016; 61:62-70. [DOI: 10.1111/adj.12313] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/22/2015] [Indexed: 11/28/2022]
Affiliation(s)
- MC Schulz
- Department of Oral and Maxillofacial Surgery; Faculty of Medicine ‘Carl Gustav Carus’; Technische Universität Dresden; Dresden Germany
| | | | | | - R Koch
- Institute for Medical Informatics and Biometry; Faculty of Medicine ‘Carl Gustav Carus’; Technische Universität Dresden; Dresden Germany
| | - G Lauer
- Department of Oral and Maxillofacial Surgery; Faculty of Medicine ‘Carl Gustav Carus’; Technische Universität Dresden; Dresden Germany
| | - R Mai
- Department of Oral and Maxillofacial Surgery; Faculty of Medicine ‘Carl Gustav Carus’; Technische Universität Dresden; Dresden Germany
| | - T Hoffmann
- Department of Periodontology; Faculty of Medicine ‘Carl Gustav Carus’; Technische Universität Dresden; Dresden Germany
| |
Collapse
|
49
|
Grant N, Rodger S, Hoffmann T. Intervention decision-making processes and information preferences of parents of children with autism spectrum disorders. Child Care Health Dev 2016; 42:125-34. [PMID: 26489390 DOI: 10.1111/cch.12296] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Revised: 07/17/2015] [Accepted: 09/06/2015] [Indexed: 11/29/2022]
Abstract
BACKGROUND When a child is diagnosed with autism, parents are faced with the task of choosing from many different intervention options. To find information about the options available, parents turn to a number of different sources. This study explores parents' (n = 23) intervention decision-making processes and information preferences following the diagnosis of ASD for their child. METHODS Qualitative thematic analysis of verbatim transcripts from interviews and focus groups involving parents of children with an autism diagnosis was undertaken. RESULTS Analysis of the results revealed that there are concurrent emotional and pragmatic intervention 'journeys' undertaken by parents post diagnosis, which encompass the primary themes of: (1) information sources used, (2) parents' information preferences and (3) factors influencing intervention decision making. Parents described a journey from the point of diagnosis that involved seeking information on ASD interventions from multiple sources, with the Internet being the primary source. They were overwhelmed by the sheer volume of information available, and their preferences for information varied according to their stage in the journey post diagnosis. Parents had a 'trial and error' approach to choosing ASD interventions, with confidence increasing as they became more familiar with their child's condition, and had opportunities to explore numerous information sources about their child's diagnosis. While confidence increased over time, consideration of the effectiveness or evidence supporting interventions remained largely absent throughout the journey. CONCLUSION This study highlights the need for parents of children with ASD to be supported to make informed intervention decisions, particularly with consideration for research evidence.
Collapse
Affiliation(s)
- N Grant
- School of Health and Rehabilitation Sciences, The University of Queensland, Brisbane, Australia
| | - S Rodger
- School of Health and Rehabilitation Sciences, The University of Queensland, Brisbane, Australia.,Cooperative Research Centre for Living with Autism Spectrum Disorders (Autism CRC), Brisbane, Australia
| | - T Hoffmann
- School of Health and Rehabilitation Sciences, The University of Queensland, Brisbane, Australia.,Centre for Research in Evidence-Based Practice, Faculty of Health Sciences and Medicine, Bond University, Gold Coast, Australia
| |
Collapse
|
50
|
Kampf CJ, Filippi A, Zuth C, Hoffmann T, Opatz T. Secondary brown carbon formation via the dicarbonyl imine pathway: nitrogen heterocycle formation and synergistic effects. Phys Chem Chem Phys 2016; 18:18353-64. [DOI: 10.1039/c6cp03029g] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We observe nitrogen heterocycles to be common secondary brown carbon chromophores formed by dicarbonylsviathe imine pathway, and synergistic effects in mixed dicarbonyl reaction systems.
Collapse
Affiliation(s)
- C. J. Kampf
- Institut für Anorganische und Analytische Chemie
- Johannes Gutenberg-Universität Mainz
- 55128 Mainz
- Germany
- Abteilung für Multiphasenchemie
| | - A. Filippi
- Institut für Anorganische und Analytische Chemie
- Johannes Gutenberg-Universität Mainz
- 55128 Mainz
- Germany
- Abteilung für Multiphasenchemie
| | - C. Zuth
- Institut für Anorganische und Analytische Chemie
- Johannes Gutenberg-Universität Mainz
- 55128 Mainz
- Germany
| | - T. Hoffmann
- Institut für Anorganische und Analytische Chemie
- Johannes Gutenberg-Universität Mainz
- 55128 Mainz
- Germany
| | - T. Opatz
- Institut für Organische Chemie
- Johannes Gutenberg-Universität Mainz
- 55128 Mainz
- Germany
| |
Collapse
|