1
|
Schmidt N, Sielemann K, Breitenbach S, Fuchs J, Pucker B, Weisshaar B, Holtgräwe D, Heitkam T. Repeat turnover meets stable chromosomes: repetitive DNA sequences mark speciation and gene pool boundaries in sugar beet and wild beets. Plant J 2024; 118:171-190. [PMID: 38128038 DOI: 10.1111/tpj.16599] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 12/05/2023] [Accepted: 12/08/2023] [Indexed: 12/23/2023]
Abstract
Sugar beet and its wild relatives share a base chromosome number of nine and similar chromosome morphologies. Yet, interspecific breeding is impeded by chromosome and sequence divergence that is still not fully understood. Since repetitive DNAs are among the fastest evolving parts of the genome, we investigated, if repeatome innovations and losses are linked to chromosomal differentiation and speciation. We traced genome and chromosome-wide evolution across 13 beet species comprising all sections of the genera Beta and Patellifolia. For this, we combined short and long read sequencing, flow cytometry, and cytogenetics to build a comprehensive framework that spans the complete scale from DNA to chromosome to genome. Genome sizes and repeat profiles reflect the separation into three gene pools with contrasting evolutionary patterns. Among all repeats, satellite DNAs harbor most genomic variability, leading to fundamentally different centromere architectures, ranging from chromosomal uniformity in Beta and Patellifolia to the formation of patchwork chromosomes in Corollinae/Nanae. We show that repetitive DNAs are causal for the genome expansions and contractions across the beet genera, providing insights into the genomic underpinnings of beet speciation. Satellite DNAs in particular vary considerably between beet genomes, leading to the evolution of distinct chromosomal setups in the three gene pools, likely contributing to the barriers in beet breeding. Thus, with their isokaryotypic chromosome sets, beet genomes present an ideal system for studying the link between repeats, genomic variability, and chromosomal differentiation and provide a theoretical fundament for understanding barriers in any crop breeding effort.
Collapse
Affiliation(s)
- Nicola Schmidt
- Faculty of Biology, Technische Universität Dresden, 01069, Dresden, Germany
| | - Katharina Sielemann
- Genetics and Genomics of Plants, Center for Biotechnology (CeBiTec) & Faculty of Biology, Bielefeld University, 33615, Bielefeld, Germany
- Graduate School DILS, Bielefeld Institute for Bioinformatics Infrastructure (BIBI), Bielefeld University, 33615, Bielefeld, Germany
| | - Sarah Breitenbach
- Faculty of Biology, Technische Universität Dresden, 01069, Dresden, Germany
| | - Jörg Fuchs
- Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, 06466, Stadt Seeland, Germany
| | - Boas Pucker
- Plant Biotechnology and Bioinformatics, Institute of Plant Biology & Braunschweig Integrated Centre of Systems Biology (BRICS), TU Braunschweig, 38106, Braunschweig, Germany
| | - Bernd Weisshaar
- Genetics and Genomics of Plants, Center for Biotechnology (CeBiTec) & Faculty of Biology, Bielefeld University, 33615, Bielefeld, Germany
| | - Daniela Holtgräwe
- Genetics and Genomics of Plants, Center for Biotechnology (CeBiTec) & Faculty of Biology, Bielefeld University, 33615, Bielefeld, Germany
| | - Tony Heitkam
- Faculty of Biology, Technische Universität Dresden, 01069, Dresden, Germany
- Institute of Biology, NAWI Graz, Karl-Franzens-Universität, A-8010 Graz, Graz, Austria
| |
Collapse
|
2
|
Garcia S, Kovarik A, Maiwald S, Mann L, Schmidt N, Pascual-Díaz JP, Vitales D, Weber B, Heitkam T. The Dynamic Interplay Between Ribosomal DNA and Transposable Elements: A Perspective From Genomics and Cytogenetics. Mol Biol Evol 2024; 41:msae025. [PMID: 38306580 PMCID: PMC10946416 DOI: 10.1093/molbev/msae025] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 12/06/2023] [Accepted: 01/29/2024] [Indexed: 02/04/2024] Open
Abstract
Although both are salient features of genomes, at first glance ribosomal DNAs and transposable elements are genetic elements with not much in common: whereas ribosomal DNAs are mainly viewed as housekeeping genes that uphold all prime genome functions, transposable elements are generally portrayed as selfish and disruptive. These opposing characteristics are also mirrored in other attributes: organization in tandem (ribosomal DNAs) versus organization in a dispersed manner (transposable elements); evolution in a concerted manner (ribosomal DNAs) versus evolution by diversification (transposable elements); and activity that prolongs genomic stability (ribosomal DNAs) versus activity that shortens it (transposable elements). Re-visiting relevant instances in which ribosomal DNA-transposable element interactions have been reported, we note that both repeat types share at least four structural and functional hallmarks: (1) they are repetitive DNAs that shape genomes in evolutionary timescales, (2) they exchange structural motifs and can enter co-evolution processes, (3) they are tightly controlled genomic stress sensors playing key roles in senescence/aging, and (4) they share common epigenetic marks such as DNA methylation and histone modification. Here, we give an overview of the structural, functional, and evolutionary characteristics of both ribosomal DNAs and transposable elements, discuss their roles and interactions, and highlight trends and future directions as we move forward in understanding ribosomal DNA-transposable element associations.
Collapse
Affiliation(s)
- Sònia Garcia
- Institut Botànic de Barcelona (IBB), CSIC-CMCNB, 08038 Barcelona, Catalonia, Spain
| | - Ales Kovarik
- Institute of Biophysics, Academy of Sciences of the Czech Republic, 61265 Brno, Czech Republic
| | - Sophie Maiwald
- Faculty of Biology, Technische Universität Dresden, D-01069 Dresden, Germany
| | - Ludwig Mann
- Faculty of Biology, Technische Universität Dresden, D-01069 Dresden, Germany
| | - Nicola Schmidt
- Faculty of Biology, Technische Universität Dresden, D-01069 Dresden, Germany
| | | | - Daniel Vitales
- Institut Botànic de Barcelona (IBB), CSIC-CMCNB, 08038 Barcelona, Catalonia, Spain
- Laboratori de Botànica–Unitat Associada CSIC, Facultat de Farmàcia i Ciències de l’Alimentació, Universitat de Barcelona, 08028 Barcelona, Catalonia, Spain
| | - Beatrice Weber
- Faculty of Biology, Technische Universität Dresden, D-01069 Dresden, Germany
| | - Tony Heitkam
- Faculty of Biology, Technische Universität Dresden, D-01069 Dresden, Germany
- Institute of Biology, NAWI Graz, Karl-Franzens-Universität, A-8010 Graz, Austria
| |
Collapse
|
3
|
Mann L, Balasch K, Schmidt N, Heitkam T. High-fidelity (repeat) consensus sequences from short reads using combined read clustering and assembly. BMC Genomics 2024; 25:109. [PMID: 38267856 PMCID: PMC10809544 DOI: 10.1186/s12864-023-09948-4] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 12/28/2023] [Indexed: 01/26/2024] Open
Abstract
BACKGROUND Despite the many cheap and fast ways to generate genomic data, good and exact genome assembly is still a problem, with especially the repeats being vastly underrepresented and often misassembled. As short reads in low coverage are already sufficient to represent the repeat landscape of any given genome, many read cluster algorithms were brought forward that provide repeat identification and classification. But how can trustworthy, reliable and representative repeat consensuses be derived from unassembled genomes? RESULTS Here, we combine methods from repeat identification and genome assembly to derive these robust consensuses. We test several use cases, such as (1) consensus building from clustered short reads of non-model genomes, (2) from genome-wide amplification setups, and (3) specific repeat-centred questions, such as the linked vs. unlinked arrangement of ribosomal genes. In all our use cases, the derived consensuses are robust and representative. To evaluate overall performance, we compare our high-fidelity repeat consensuses to RepeatExplorer2-derived contigs and check, if they represent real transposable elements as found in long reads. Our results demonstrate that it is possible to generate useful, reliable and trustworthy consensuses from short reads by a combination from read cluster and genome assembly methods in an automatable way. CONCLUSION We anticipate that our workflow opens the way towards more efficient and less manual repeat characterization and annotation, benefitting all genome studies, but especially those of non-model organisms.
Collapse
Affiliation(s)
- Ludwig Mann
- Faculty of Biology, Technische Universität Dresden, D-01069, Dresden, Germany
| | - Kristin Balasch
- Faculty of Biology, Technische Universität Dresden, D-01069, Dresden, Germany
| | - Nicola Schmidt
- Faculty of Biology, Technische Universität Dresden, D-01069, Dresden, Germany
| | - Tony Heitkam
- Faculty of Biology, Technische Universität Dresden, D-01069, Dresden, Germany.
- Institute of Biology, NAWI Graz, Karl-Franzens-Universität, Graz, A-8010, Austria.
| |
Collapse
|
4
|
Klee L, Fabrice A, Eisenburger N, Feddern S, Gabriel C, Kossow A, Niessen J, Schmidt N, Wiesmüller GA, Grüne B, Joisten C. Corrigendum to "Coping strategies during legally enforced quarantine and their association to psychological distress level: a cross-sectional study" [Public Health 209 (2022) 52-60]. Public Health 2024; 226:273. [PMID: 38071185 PMCID: PMC10834371 DOI: 10.1016/j.puhe.2023.11.020] [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: 01/15/2024]
Affiliation(s)
- L Klee
- Cologne Health Department, Infektions- und Umwelthygiene, Neumarkt 15-21, 50667, Köln, Germany; Institute for Occupational Medicine and Social Medicine, University Hospital, Medical Faculty, RWTH Aachen University, Aachen, Germany.
| | - A Fabrice
- Cologne Health Department, Infektions- und Umwelthygiene, Neumarkt 15-21, 50667, Köln, Germany; Institute for Occupational Medicine and Social Medicine, University Hospital, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - N Eisenburger
- Department for Physical Activity in Public Health, Institute of Movement and Neurosciences, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933, Cologne, Germany
| | - S Feddern
- Cologne Health Department, Infektions- und Umwelthygiene, Neumarkt 15-21, 50667, Köln, Germany
| | - C Gabriel
- Cologne Health Department, Infektions- und Umwelthygiene, Neumarkt 15-21, 50667, Köln, Germany
| | - A Kossow
- Cologne Health Department, Infektions- und Umwelthygiene, Neumarkt 15-21, 50667, Köln, Germany; Institute of Hygiene, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149, Münster, Germany
| | - J Niessen
- Cologne Health Department, Infektions- und Umwelthygiene, Neumarkt 15-21, 50667, Köln, Germany
| | - N Schmidt
- Department for Physical Activity in Public Health, Institute of Movement and Neurosciences, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933, Cologne, Germany
| | - G A Wiesmüller
- Cologne Health Department, Infektions- und Umwelthygiene, Neumarkt 15-21, 50667, Köln, Germany; Institute for Occupational Medicine and Social Medicine, University Hospital, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - B Grüne
- Cologne Health Department, Infektions- und Umwelthygiene, Neumarkt 15-21, 50667, Köln, Germany
| | - C Joisten
- Cologne Health Department, Infektions- und Umwelthygiene, Neumarkt 15-21, 50667, Köln, Germany; Department for Physical Activity in Public Health, Institute of Movement and Neurosciences, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933, Cologne, Germany
| |
Collapse
|
5
|
Rheinbaben F, Köhnlein J, Schmidt N, Hildebrandt C, Werner S. To reduce cytotoxicity when testing the virucidal activity of chemical disinfectants and biocides: The "T-25 method" as an alternative to "large-volume-plating". Heliyon 2023; 9:e20728. [PMID: 37876415 PMCID: PMC10590779 DOI: 10.1016/j.heliyon.2023.e20728] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 09/28/2023] [Accepted: 10/04/2023] [Indexed: 10/26/2023] Open
Abstract
When testing the virucidal activity of biocides, the non-inactivated residual virus is titrated on cell cultures by the end point dilution method on 96-well tissue culture plates. However, residues of the biocide to be tested also come into contact with the cell cultures in varying concentrations and thus can lead to cytotoxic effects even at high levels of dilution. In the European standards for testing biocides, in particular disinfectants, methods such as Large-Volume-Plating (LVP) method and, in some guidelines, gel filtration procedures are described for reducing cytotoxic effects in the case of highly cytotoxic products, if the classical dilution method proves to be impractical. In order to enable the testing of highly cytotoxic biocides for their activity against viruses, an alternative method for reducing cytotoxicity is introduced, which is based on a procedure of isolating infectious viruses from cytotoxic patients' materials such as stool and can be applied when the other methods fail.
Collapse
Affiliation(s)
| | | | | | | | - S. Werner
- HygCen Germany GmbH, Schwerin, Germany
| |
Collapse
|
6
|
Abstract
The quality of chromosome preparation influences all downstream analyses and is therefore crucial. Hence, numerous protocols exist to produce microscopic slides with mitotic chromosomes. Nevertheless, due to the high content of fibers in and around a plant cell, preparation of plant chromosomes is still far from trivial and needs to be fine-tuned for each species and tissue type. Here, we outline the "dropping method," a straightforward and efficient protocol to prepare multiple slides with uniform quality from a single chromosome preparation. In this method, nuclei are extracted and cleaned to produce a nuclei suspension. In a drop-by-drop manner, this suspension is then applied from a certain height onto the slides, causing the nuclei to rupture and the chromosomes to spread. Due to the physical forces that accompany the dropping and spreading process, this method is best suited for species with small- to medium-sized chromosomes.
Collapse
Affiliation(s)
- Nicola Schmidt
- Faculty of Biology, Institute of Botany, Dresden, Germany
| | - Beatrice Weber
- Faculty of Biology, Institute of Botany, Dresden, Germany
| | - Jessica Klekar
- Faculty of Biology, Institute of Botany, Dresden, Germany
| | - Susan Liedtke
- Faculty of Biology, Institute of Botany, Dresden, Germany
| | | | - Tony Heitkam
- Faculty of Biology, Institute of Botany, Dresden, Germany.
| |
Collapse
|
7
|
Palm WU, Schmidt N, Stahn M, Grimme S. A kinetic study of the photolysis of sulfamethoxazole with special emphasis on the photoisomer. Photochem Photobiol Sci 2022; 22:615-630. [PMID: 36471235 DOI: 10.1007/s43630-022-00340-x] [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] [Received: 06/16/2022] [Accepted: 11/07/2022] [Indexed: 12/12/2022]
Abstract
Abstract
The previously not studied photochemical degradation of sulfamethoxazole (SMX) to the isomer of SMX (ISO) was measured via a polychromatic (Xe) and a monochromatic (Hg) light source and accompanied by quantum chemical DFT calculations. In addition to the $$\mathrm{p}K_\mathrm{a} = \;7.0 \pm 0.1$$
p
K
a
=
7.0
±
0.1
of ISO, tautomer-dependent properties such as the $$K_\mathrm{OW}$$
K
OW
were measured and theoretically confirmed by DFT. The kinetics in solutions below and above the $$\mathrm{p}K_\mathrm{a} = 5.6$$
p
K
a
=
5.6
of SMX were studied for the available and quantifiable products SMX, ISO, 3-amino-5-methylisoxazole (AMI), 2-amino-5-methyloxazole (AMO), and sulfanilic acid (SUA). The quantum yields of the neutral ($$\Phi _\mathrm{N}$$
Φ
N
) and anionic $$\Phi _\mathrm{A}$$
Φ
A
) forms of SMX ($$\Phi _\mathrm{A} = 0.03 \pm 0.001$$
Φ
A
=
0.03
±
0.001
, $$\Phi _\mathrm{N} = 0.15 \pm 0.01$$
Φ
N
=
0.15
±
0.01
) and ISO ($$\Phi _\mathrm{A} = 0.05 \pm 0.01$$
Φ
A
=
0.05
±
0.01
and $$\Phi _\mathrm{N} = 0.06 \pm 0.02$$
Φ
N
=
0.06
±
0.02
) were found to be wavelength-independent. In a competitive reaction to the formation of ISO from SMX, the degradation product TP271 is formed. Various proposed structures for TP271 described in the literature have been studied quantum mechanically and can be excluded for thermodynamic reasons. In real samples in a northern German surface water in summer 2021 mean concentrations of SMX were found in the range of 120 ng/L. In agreement with the pH-dependent yields, concentrations of ISO were low in the range of 8 ng/L.
Graphical abstract
Collapse
|
8
|
Meißner A, Gutsche R, Galldiks N, Kocher M, Jünger S, Eich M, Nogova L, Schmidt N, Ruge M, Goldbrunner R, Proescholdt M, Grau S, Lohmann P. P13.03.A Radiomics for the non-invasive assessment of the PDL-1 expression in patients with non-small cell lung cancer brain metastases. Neuro Oncol 2022. [DOI: 10.1093/neuonc/noac174.283] [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: 11/14/2022] Open
Abstract
Abstract
BACKGROUND
The expression level of programmed cell death ligand 1 (PDL-1) might be an indicator for response to immunotherapy using checkpoint inhibitors in patients with non-small cell lung cancer (NSCLC). As intra-tumoral differences and discrepancies between the PDL-1 expression in the primary tumor and the brain metastases may occur, a method for a reliable non-invasive assessment of the intracranial PDL-1 expression would be of clinical value. We evaluated the potential of MRI radiomics for a non-invasive assessment of the PDL-1 expression in patients with NSCLC brain metastases.
PATIENTS AND METHODS
Fifty-three patients with brain metastases from NSCLC from two university brain tumor centers (group 1, 36 patients; group 2, 17 patients) underwent tumor resection with subsequent immunohistochemical assessment of the PDL-1 expression. Brain metastases were manually segmented on preoperative T1-weighted contrast-enhanced MRI. Group 1 was used for model training and validation, group 2 for model testing. After image pre-processing and radiomics feature extraction from T1-weighted contrast-enhanced MRI, a test-retest analysis was performed to identify robust features prior to feature selection. The radiomics model was trained and validated using five-fold cross validation. Finally, the best performing radiomics model was applied to the test data. Diagnostic performance was evaluated using receiver operating characteristic (ROC) analyses.
RESULTS
An intracranial PDL-1 expression was found by immunohistochemistry in 18 of 36 patients (50%) in group 1, and 7 of 17 patients (41%) in group 2. Univariate analysis identified tumor volume as a significant clinical feature for PDL-1 expression (area under the ROC curve (AUC), 0.77). A random forest classifier using a four-parameter radiomics signature including tumor volume yielded an AUC of 0.83 ± 0.18 in the training data (group 1). Finally, the classifier achieved an AUC of 0.84 in the external test data (group 2).
CONCLUSION
The developed radiomics classifiers allows a non-invasive assessment of the intracranial PD-L1 expression in patients with NSCLC brain metastases with a high diagnostic performance.
Collapse
Affiliation(s)
- A Meißner
- Dept. of General Neurosurgery, Center for Neurosurgery, Faculty of Medicine and University Hospital Cologne, University of Cologne , Cologne , Germany
| | - R Gutsche
- Inst. of Neuroscience and Medicine (INM-3/-4) , Juelich , Germany
| | - N Galldiks
- Dept. of Neurology, Faculty of Medicine and University Hospital Cologne, University of Cologne , Cologne , Germany
- Center for Integrated Oncology (CIO), Universities of Aachen, Bonn, Cologne and Duesseldorf , Cologne , Germany
- Inst. of Neuroscience and Medicine (INM-3/-4) , Juelich , Germany
| | - M Kocher
- Dept. of Stereotactic and Functional Neurosurgery, Center for Neurosurgery, Faculty of Medicine and University Hospital Cologne, University of Cologne , Cologne , Germany
- Inst. of Neuroscience and Medicine (INM-3/-4) , Juelich , Germany
| | - S Jünger
- Dept. of General Neurosurgery, Center for Neurosurgery, Faculty of Medicine and University Hospital Cologne, University of Cologne , Cologne , Germany
| | - M Eich
- Dept. of Pathology, Faculty of Medicine and University Hospital Cologne, University of Cologne , Cologne , Germany
| | - L Nogova
- Dept. I of Internal Medicine, Faculty of Medicine and University Hospital Cologne, University Hospital Cologne , Cologne , Germany
- Center for Integrated Oncology (CIO), Universities of Aachen, Bonn, Cologne and Duesseldorf , Cologne , Germany
| | - N Schmidt
- Dept. of Neurosurgery, University Hospital Regensburg , Regensburg , Germany
| | - M Ruge
- Dept. of Stereotactic and Functional Neurosurgery, Center for Neurosurgery, Faculty of Medicine and University Hospital Cologne, University of Cologne , Cologne , Germany
- Center for Integrated Oncology (CIO), Universities of Aachen, Bonn, Cologne and Duesseldorf , Cologne , Germany
| | - R Goldbrunner
- Dept. of General Neurosurgery, Center for Neurosurgery, Faculty of Medicine and University Hospital Cologne, University of Cologne , Cologne , Germany
| | - M Proescholdt
- Dept. of Neurosurgery, University Hospital Regensburg , Regensburg , Germany
| | - S Grau
- Dept. of Neurosurgery, Klinikum Fulda, Academic Hospital of the University of Marburg , Fulda , Germany
| | - P Lohmann
- Inst. of Neuroscience and Medicine (INM-3/-4) , Juelich , Germany
- Dept. of Stereotactic and Functional Neurosurgery, Center for Neurosurgery, Faculty of Medicine and University Hospital Cologne, University of Cologne , Cologne , Germany
| |
Collapse
|
9
|
Klee L, Fabrice A, Eisenburger N, Feddern S, Gabriel C, Kossow A, Niessen J, Schmidt N, Wiesmüller GA, Grüne B, Joisten C. Coping strategies during legally enforced quarantine and their association to psychological distress level: a cross-sectional study. Public Health 2022; 209:52-60. [PMID: 35809351 PMCID: PMC9197782 DOI: 10.1016/j.puhe.2022.05.022] [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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 05/03/2022] [Accepted: 05/31/2022] [Indexed: 11/29/2022]
Abstract
OBJECTIVES The non-pharmacological measures to contain the COVID-19 pandemic may lead to considerable psychological distress. The aim of the CoCo-Fakt study was to investigate possible coping strategies and their effects on psychological distress during legally enforced quarantine of infected persons (IPs) and their close contacts (CPs). STUDY DESIGN This was a cross-sectional cohort study. METHODS From 12 December 2020 to 6 January 2021, all IPs and their CPs (n = 8232) registered by the public health department (Cologne, Germany) were surveyed online. Psychosocial distress and coping were measured using sum scores; free-text answers related to specific strategies were subsequently categorised. RESULTS Psychosocial distress was higher in IPs than in CPs (P < .001). Although the mean coping score did not differ between both groups, it was influenced by the reason for quarantine (IP vs CP) besides gender, age, socio-economic status, living situation, psychological distress, resilience, physical activity and eating behaviour. This final regression model explained 25.9% of the variance. Most participants used active coping strategies, such as contact with the social environment, a positive attitude and hobbies. CONCLUSIONS Although psychological distress was higher in IPs than in CPs during the quarantine period, the mean coping score did not differ. The strategies most frequently used by IPs and CPs were activating social networks, a healthy lifestyle and professional support systems, such as the health department helpline. Appropriate advice should be implemented to prevent long-term psychological consequences when supporting affected people.
Collapse
Affiliation(s)
- L Klee
- Cologne Health Department, Infektions- und Umwelthygiene, Neumarkt 15-21, 50667, Köln, Germany; Institute for Occupational Medicine and Social Medicine, University Hospital, Medical Faculty, RWTH Aachen University, Aachen, Germany.
| | - A Fabrice
- Cologne Health Department, Infektions- und Umwelthygiene, Neumarkt 15-21, 50667, Köln, Germany; Institute for Occupational Medicine and Social Medicine, University Hospital, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - N Eisenburger
- Department for Physical Activity in Public Health, Institute of Movement and Neurosciences, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933, Cologne, Germany
| | - S Feddern
- Cologne Health Department, Infektions- und Umwelthygiene, Neumarkt 15-21, 50667, Köln, Germany
| | - C Gabriel
- Cologne Health Department, Infektions- und Umwelthygiene, Neumarkt 15-21, 50667, Köln, Germany
| | - A Kossow
- Cologne Health Department, Infektions- und Umwelthygiene, Neumarkt 15-21, 50667, Köln, Germany; Institute of Hygiene, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149, Münster, Germany
| | - J Niessen
- Cologne Health Department, Infektions- und Umwelthygiene, Neumarkt 15-21, 50667, Köln, Germany
| | - N Schmidt
- Department for Physical Activity in Public Health, Institute of Movement and Neurosciences, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933, Cologne, Germany
| | - G A Wiesmüller
- Cologne Health Department, Infektions- und Umwelthygiene, Neumarkt 15-21, 50667, Köln, Germany; Institute for Occupational Medicine and Social Medicine, University Hospital, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - B Grüne
- Cologne Health Department, Infektions- und Umwelthygiene, Neumarkt 15-21, 50667, Köln, Germany
| | - C Joisten
- Cologne Health Department, Infektions- und Umwelthygiene, Neumarkt 15-21, 50667, Köln, Germany; Department for Physical Activity in Public Health, Institute of Movement and Neurosciences, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933, Cologne, Germany
| |
Collapse
|
10
|
Schulte L, Meucci S, Stoof-Leichsenring KR, Heitkam T, Schmidt N, von Hippel B, Andreev AA, Diekmann B, Biskaborn BK, Wagner B, Melles M, Pestryakova LA, Alsos IG, Clarke C, Krutovsky KV, Herzschuh U. Larix species range dynamics in Siberia since the Last Glacial captured from sedimentary ancient DNA. Commun Biol 2022; 5:570. [PMID: 35681049 PMCID: PMC9184489 DOI: 10.1038/s42003-022-03455-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 05/06/2022] [Indexed: 11/19/2022] Open
Abstract
Climate change is expected to cause major shifts in boreal forests which are in vast areas of Siberia dominated by two species of the deciduous needle tree larch (Larix). The species differ markedly in their ecosystem functions, thus shifts in their respective ranges are of global relevance. However, drivers of species distribution are not well understood, in part because paleoecological data at species level are lacking. This study tracks Larix species distribution in time and space using target enrichment on sedimentary ancient DNA extracts from eight lakes across Siberia. We discovered that Larix sibirica, presently dominating in western Siberia, likely migrated to its northern distribution area only in the Holocene at around 10,000 years before present (ka BP), and had a much wider eastern distribution around 33 ka BP. Samples dated to the Last Glacial Maximum (around 21 ka BP), consistently show genotypes of L. gmelinii. Our results suggest climate as a strong determinant of species distribution in Larix and provide temporal and spatial data for species projection in a changing climate. Using ancient sedimentary DNA from up to 50 kya, dramatic distributional shifts are documented in two dominant boreal larch species, likely guided by environmental changes suggesting climate as a strong determinant of species distribution.
Collapse
|
11
|
Schmidt N, Denecke J, Schmidt J, Davies M, Heidermann T. Large scale experimental investigation on storage tank breathing during sudden cold heavy rain event. J Loss Prev Process Ind 2022. [DOI: 10.1016/j.jlp.2022.104825] [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: 10/17/2022]
|
12
|
Sielemann K, Pucker B, Schmidt N, Viehöver P, Weisshaar B, Heitkam T, Holtgräwe D. Complete pan-plastome sequences enable high resolution phylogenetic classification of sugar beet and closely related crop wild relatives. BMC Genomics 2022; 23:113. [PMID: 35139817 PMCID: PMC8830136 DOI: 10.1186/s12864-022-08336-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 10/08/2021] [Accepted: 01/20/2022] [Indexed: 12/24/2022] Open
Abstract
Background As the major source of sugar in moderate climates, sugar-producing beets (Beta vulgaris subsp. vulgaris) have a high economic value. However, the low genetic diversity within cultivated beets requires introduction of new traits, for example to increase their tolerance and resistance attributes – traits that often reside in the crop wild relatives. For this, genetic information of wild beet relatives and their phylogenetic placements to each other are crucial. To answer this need, we sequenced and assembled the complete plastome sequences from a broad species spectrum across the beet genera Beta and Patellifolia, both embedded in the Betoideae (order Caryophyllales). This pan-plastome dataset was then used to determine the wild beet phylogeny in high-resolution. Results We sequenced the plastomes of 18 closely related accessions representing 11 species of the Betoideae subfamily and provided high-quality plastome assemblies which represent an important resource for further studies of beet wild relatives and the diverse plant order Caryophyllales. Their assembly sizes range from 149,723 bp (Beta vulgaris subsp. vulgaris) to 152,816 bp (Beta nana), with most variability in the intergenic sequences. Combining plastome-derived phylogenies with read-based treatments based on mitochondrial information, we were able to suggest a unified and highly confident phylogenetic placement of the investigated Betoideae species. Our results show that the genus Beta can be divided into the two clearly separated sections Beta and Corollinae. Our analysis confirms the affiliation of B. nana with the other Corollinae species, and we argue against a separate placement in the Nanae section. Within the Patellifolia genus, the two diploid species Patellifolia procumbens and Patellifolia webbiana are, regarding the plastome sequences, genetically more similar to each other than to the tetraploid Patellifolia patellaris. Nevertheless, all three Patellifolia species are clearly separated. Conclusion In conclusion, our wild beet plastome assemblies represent a new resource to understand the molecular base of the beet germplasm. Despite large differences on the phenotypic level, our pan-plastome dataset is highly conserved. For the first time in beets, our whole plastome sequences overcome the low sequence variation in individual genes and provide the molecular backbone for highly resolved beet phylogenomics. Hence, our plastome sequencing strategy can also guide genomic approaches to unravel other closely related taxa. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-022-08336-8.
Collapse
Affiliation(s)
- Katharina Sielemann
- Genetics and Genomics of Plants, Center for Biotechnology (CeBiTec) & Faculty of Biology, Bielefeld University, 33615, Bielefeld, Germany.,Graduate School DILS, Bielefeld Institute for Bioinformatics Infrastructure (BIBI), Bielefeld University, 33615, Bielefeld, Germany
| | - Boas Pucker
- Genetics and Genomics of Plants, Center for Biotechnology (CeBiTec) & Faculty of Biology, Bielefeld University, 33615, Bielefeld, Germany.,Evolution and Diversity, Department of Plant Sciences, University of Cambridge, Cambridge, CB2 3EA, UK.,Institute of Plant Biology, TU Braunschweig, Braunschweig, Germany
| | - Nicola Schmidt
- Faculty of Biology, Institute of Botany, Technische Universität Dresden, 01069, Dresden, Germany
| | - Prisca Viehöver
- Genetics and Genomics of Plants, Center for Biotechnology (CeBiTec) & Faculty of Biology, Bielefeld University, 33615, Bielefeld, Germany
| | - Bernd Weisshaar
- Genetics and Genomics of Plants, Center for Biotechnology (CeBiTec) & Faculty of Biology, Bielefeld University, 33615, Bielefeld, Germany
| | - Tony Heitkam
- Faculty of Biology, Institute of Botany, Technische Universität Dresden, 01069, Dresden, Germany.
| | - Daniela Holtgräwe
- Genetics and Genomics of Plants, Center for Biotechnology (CeBiTec) & Faculty of Biology, Bielefeld University, 33615, Bielefeld, Germany.
| |
Collapse
|
13
|
Proescholdt M, Qiu Z, Falter J, Schmidt N. P13.14 Inhibition of extracellular carbonic anhydrases reduces glioblastoma cell invasion. Neuro Oncol 2021. [DOI: 10.1093/neuonc/noab180.121] [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: 11/14/2022] Open
Abstract
Abstract
BACKGROUND
Malignant gliomas metabolize glucose preferably by glycolysis which is in accordance with the Warburg effect. This induces a high demand of glucose combined with a significant lactic acid load. The hypoxia-inducible carbonic anhydrase (CA) IX has been shown to moderate the extrusion of hydrogen ions into the extracellular space. Since the acidification of the extracellular environment contributes to host tissue invasion due to activation of proteolytic enzymes, we hypothesized that CA IX plays an important role in malignant glioma Recently, specific small molecule inhibitors of this enzyme have been developed and may provide an innovative strategy for anti - invasive treatment.
MATERIAL AND METHODS
Two established and 4 primary GBM cell lines (2 with mesenchymal and 2 with proneural transcriptional profile) were exposed to the CAIX inhibitor U104 under normoxic and hypoxic conditions. Cell toxicity was measured by ATP and crystal violet assay. For invasion assessment, a matrigel invasion chamber system with 8 µm pore size polycarbonate filter was used. CAIX expression was analyzed by quantitative RTPCR and Western Blot.
RESULTS
Hypoxia significantly induced CAIX expression in all cell lines. Invasiveness increased significantly under hypoxic conditions in the mesenchymal cells (p < 0.01). Regardless of oxygenation status, the mesenchymal group displayed significantly higher invasiveness compared to the proneural group (p = 0.006). Looking at all cell lines, invasion is significantly inhibited by U104, both under normoxic and hypoxic conditions (p < 0.01). However, while the mesenchymal group showed the highest susceptibility to CAIX inhibition followed by the proneurally differentiated group, the established cell lines were entirely refractory to CAIX inhibition.
CONCLUSION
Our data demonstrate that CAIX inhibition can effectively inhibit invasion in malignant glioma cells independent from oxygenation status, however the effects are significantly influenced by cell type specific biological features.
Collapse
Affiliation(s)
| | - Z Qiu
- University Hospital Regensburg, Regensburg, Germany
| | - J Falter
- University Hospital Regensburg, Regensburg, Germany
| | - N Schmidt
- University Hospital Regensburg, Regensburg, Germany
| |
Collapse
|
14
|
Bosle C, Tillmann J, Vonstein C, Rossmann C, Halbach S, Acet S, Schmidt N, Langosch C, De Bock F. Bewegungsförderung älterer Menschen als komplexe Intervention in Kommunen. Das Gesundheitswesen 2021. [DOI: 10.1055/s-0041-1732267] [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)
- C Bosle
- Bundeszentrale für gesundheitliche Aufklärung (BZgA)
| | - J Tillmann
- Bundeszentrale für gesundheitliche Aufklärung (BZgA)
| | - C Vonstein
- Bundeszentrale für gesundheitliche Aufklärung (BZgA)
| | - C Rossmann
- Bundeszentrale für gesundheitliche Aufklärung (BZgA)
| | - S Halbach
- Bundeszentrale für gesundheitliche Aufklärung (BZgA)
| | - S Acet
- Bundeszentrale für gesundheitliche Aufklärung (BZgA)
| | - N Schmidt
- Bundeszentrale für gesundheitliche Aufklärung (BZgA)
| | - C Langosch
- Bundeszentrale für gesundheitliche Aufklärung (BZgA)
| | - F De Bock
- Bundeszentrale für gesundheitliche Aufklärung (BZgA)
| |
Collapse
|
15
|
Schmidt N, Seibt KM, Weber B, Schwarzacher T, Schmidt T, Heitkam T. Broken, silent, and in hiding: tamed endogenous pararetroviruses escape elimination from the genome of sugar beet (Beta vulgaris). Ann Bot 2021; 128:281-299. [PMID: 33729490 PMCID: PMC8389469 DOI: 10.1093/aob/mcab042] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 03/16/2021] [Indexed: 05/13/2023]
Abstract
BACKGROUND AND AIMS Endogenous pararetroviruses (EPRVs) are widespread components of plant genomes that originated from episomal DNA viruses of the Caulimoviridae family. Due to fragmentation and rearrangements, most EPRVs have lost their ability to replicate through reverse transcription and to initiate viral infection. Similar to the closely related retrotransposons, extant EPRVs were retained and often amplified in plant genomes for several million years. Here, we characterize the complete genomic EPRV fraction of the crop sugar beet (Beta vulgaris, Amaranthaceae) to understand how they shaped the beet genome and to suggest explanations for their absent virulence. METHODS Using next- and third-generation sequencing data and genome assembly, we reconstructed full-length in silico representatives for the three host-specific EPRVs (beetEPRVs) in the B. vulgaris genome. Focusing on the endogenous caulimovirid beetEPRV3, we investigated its chromosomal localization, abundance and distribution by fluorescent in situ and Southern hybridization. KEY RESULTS Full-length beetEPRVs range between 7.5 and 10.7 kb in size, are heterogeneous in structure and sequence, and occupy about 0.3 % of the beet genome. Although all three beetEPRVs were assigned to the florendoviruses, they showed variably arranged protein-coding domains, different fragmentation, and preferences for diverse sequence contexts. We observed small RNAs that specifically target the individual beetEPRVs, indicating stringent epigenetic suppression. BeetEPRV3 sequences occur along all sugar beet chromosomes, preferentially in the vicinity of each other and are associated with heterochromatic, centromeric and intercalary satellite DNAs. BeetEPRV3 members also exist in genomes of related wild species, indicating an initial beetEPRV3 integration 13.4-7.2 million years ago. CONCLUSIONS Our study in beet illustrates the variability of EPRV structure and sequence in a single host genome. Evidence of sequence fragmentation and epigenetic silencing implies possible plant strategies to cope with long-term persistence of EPRVs, including amplification, fixation in the heterochromatin, and containment of EPRV virulence.
Collapse
Affiliation(s)
- Nicola Schmidt
- Faculty of Biology, Institute of Botany, Technische Universität Dresden, Dresden, Germany
| | - Kathrin M Seibt
- Faculty of Biology, Institute of Botany, Technische Universität Dresden, Dresden, Germany
| | - Beatrice Weber
- Faculty of Biology, Institute of Botany, Technische Universität Dresden, Dresden, Germany
| | - Trude Schwarzacher
- Department of Genetics and Genome Biology, University of Leicester, Leicester, UK
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization/Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou, PR China
| | - Thomas Schmidt
- Faculty of Biology, Institute of Botany, Technische Universität Dresden, Dresden, Germany
| | - Tony Heitkam
- Faculty of Biology, Institute of Botany, Technische Universität Dresden, Dresden, Germany
| |
Collapse
|
16
|
Tillmann J, Vonstein C, Rossmann C, Halbach S, Acet S, Schmidt N, Langosch C, De Bock F. Physical activity promotion of elderly people as a complex intervention: supportive toolbox. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa165.894] [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: 11/14/2022] Open
Abstract
Abstract
Issue
In EU countries, almost 20% of the population is aged 65 or older. This longer life expectancy offers many opportunities but health risks as well. Health promotion measures like physical activity are of central importance but only a small proportion of the elderly meets the minimum level of physical activity recommended by the WHO. The project “Ageing in balance” investigates how a complex intervention to promote physical activity in older people can be implemented and facilitated by making practical tools centrally available.
Description of the problem
A complex intervention following the steps of an ideal-typical process and combining behavioural and structural preventive approaches is implemented in several model regions in Germany over three years (2019-2021). As a service at the federal level, a toolbox comprising tools for needs assessment, interventions and information on physical activity, project management, legal issues and financing is built up to support the work of local decision-makers. It's evaluated how setting approaches to promote physical activity for elderly people can be successful, which supporting and impeding factors exist and how the process can be supported by a flexible toolbox provided at federal level.
Results
Socioeconomically deprived model regions (rural, town, city) were recruited and started to raise awareness and to perform needs assessment. Building of local steering committees and implementing interventions are the next steps. Currently the toolbox contains systematically identified instruments for needs assessment, an intervention database with a newly developed evidence ranking system and several information modules.
Lessons
Facilitating promotion of physical activity in the elderly is important as prioritization and resources at local level are often limited. Making the implementation of setting approaches successful and providing the potentially most promising support from federal level is still pioneering work.
Key messages
The effort is to build up a flexible support system for local stakeholders to promote physical activity in elderly people. It is evaluated how a complex behavioural and structural prevention effort for elderly people can be implemented.
Collapse
Affiliation(s)
- J Tillmann
- Federal Centre of Health Education, Cologne, Germany
| | - C Vonstein
- Federal Centre of Health Education, Cologne, Germany
| | - C Rossmann
- Federal Centre of Health Education, Cologne, Germany
| | - S Halbach
- Federal Centre of Health Education, Cologne, Germany
| | - S Acet
- Federal Centre of Health Education, Cologne, Germany
| | - N Schmidt
- Federal Centre of Health Education, Cologne, Germany
| | - C Langosch
- Federal Centre of Health Education, Cologne, Germany
| | - F De Bock
- Federal Centre of Health Education, Cologne, Germany
| |
Collapse
|
17
|
Lier LM, Breuer C, Ferrari N, Friesen D, Maisonave F, Schmidt N, Graf C. Cost-effectiveness of a family-based multicomponent outpatient intervention program for children with obesity in Germany. Public Health 2020; 186:185-192. [PMID: 32858303 DOI: 10.1016/j.puhe.2020.06.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 05/15/2020] [Accepted: 06/09/2020] [Indexed: 12/14/2022]
Abstract
OBJECTIVES Facing an epidemic of childhood obesity and budget constraints, public health administrations are showing an urgent interest in interventions that are both health effective and cost-effective. Thus, this study intends to analyze the return on investment of these existing programs. STUDY DESIGN All analyses are based on a comprehensive data set from 249 children with obesity and overweight children who participated in the Children's Health InterventionaL Trial (CHILT), an 11-month outpatient multidisciplinary family-based program. METHODS Cost-effectiveness was assessed by comparing estimated savings associated with a reduction in weight and improvement of obesity-related health parameters with intervention costs. Projected future savings in health care expenditures were modeled on existing research, using estimates of health care costs associated with juvenile obesity and remission thresholds of obesity-related disease. RESULTS On average, participants achieved a 0.19-unit reduction in the body mass index standard deviation score, showed reduction in their blood pressure values (systolic = -1.76 mmHg, diastolic = -2.82 mmHg), and showed improvement in their high-density lipoprotein (HDL) and low-density lipoprotein (LDL) cholesterol values (HDL = +1.31 mg/dL, LDL = -4.82 mg/dL). The intervention costs were 1799€ per participant, and the benefits of avoided future health care costs varied by individual. On an aggregated level, future savings amounted to between 1859€ and 1926€ per person, translating into a return on investment of 3.3-7.0%. CONCLUSIONS This study shows that a multicomponent obesity intervention, such as the CHILT, not only results in weight loss and improves important health parameters but also is cost-effective.
Collapse
Affiliation(s)
- L M Lier
- MA. Strategy & International Management, BSc Business Administration & Economics Department of Sports Economics and Sport Management, German Sport University Cologne, Cologne, Germany, Eisenstraße 5, 50925, Cologne, Germany.
| | - C Breuer
- Habilitation Sport Science Department of Sports Economics and Sport Management, German Sport University Cologne, Cologne, Germany
| | - N Ferrari
- PhD Sport Science Cologne Center for Prevention and Youth/Heart Center Cologne, University Hospital Cologne, Germany
| | - D Friesen
- MA Sports Science Institute of Movement and Neurosciences, German Sport University Cologne, Cologne, Germany
| | - F Maisonave
- Diploma in Sport Science Institute of Movement and Neurosciences, German Sport University Cologne, Cologne, Germany
| | - N Schmidt
- BA Sport Science, Institute of Movement and Neurosciences, German Sport University Cologne, Cologne, Germany
| | - C Graf
- Habilitation Sport Science, PhD Sports Medicine Institute of Movement and Neurosciences, German Sport University Cologne, Cologne, Germany
| |
Collapse
|
18
|
Abstract
T cells are a fundamental component of the adaptive immune response in the context of both acute and chronic viral infection. Tight control over the metabolic processes within T cells provides an additional level of immune regulation that is interlinked with nutrient sensing and the continued balancing of co-stimulatory and co-inhibitory signals. Underpinning T cell responsiveness for viral control are a number of phenotypic and functional adaptations ensuring adequate nutrient uptake and their utilization. T cells responding to persistent viral infections often exhibit a profile associated with immune cell exhaustion and a dysregulated metabolic profile, driven by a combination of chronic antigenic stimulation and signals from the local microenvironment. Understanding alterations in these metabolic processes provides an important basis for immunotherapeutic strategies to treat persistent infections.
Collapse
Affiliation(s)
- L. J. Pallett
- Division of Infection and ImmunityUniversity College LondonLondonUK
| | - N. Schmidt
- Division of Infection and ImmunityUniversity College LondonLondonUK
| | - A. Schurich
- Department of Infectious DiseasesKing’s College LondonLondonUK
| |
Collapse
|
19
|
Hoyer L, Schmidt N. Verification of guideline conform mCRC treatment with EGFR inhibitors with real-world evidence data from EU5 countries. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy281.037] [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
|
20
|
Schmidt N, Schlotter P, Abdulcadir J. Fortbildungsbedarf zu FGM – Ergebnisse einer Pilotbefragung in München. Geburtshilfe Frauenheilkd 2018. [DOI: 10.1055/s-0038-1671079] [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: 10/28/2022] Open
Affiliation(s)
- N Schmidt
- Referat für Gesundheit und Umwelt München, Fachstelle 'Frau & Gesundheit und Gendermedizin', München, Deutschland
- Universitätskliniken Genf, Frauenklinik, Genf, Schweiz
| | - P Schlotter
- Ludwigs-Maximilians-Universität München, IBE, München, Deutschland
| | - J Abdulcadir
- Universitätskliniken Genf, Frauenklinik, Genf, Schweiz
| |
Collapse
|
21
|
Hellak A, Schmidt N, Schauseil M, Stein S, Drechsler T, Korbmacher-Steiner HM. Influence on interradicular bone volume of Invisalign treatment for adult crowding with interproximal enamel reduction: a retrospective three-dimensional cone-beam computed tomography study. BMC Oral Health 2018; 18:103. [PMID: 29884150 PMCID: PMC5994012 DOI: 10.1186/s12903-018-0569-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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: 12/08/2017] [Accepted: 05/31/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The aim of this study was to use three-dimensional datasets to identify associations between treatment for adult crowding, using Invisalign aligner and interproximal enamel reduction (IER), and changes in the volume of interradicular bone. METHODS A total of 60 cone-beam computed tomography (CBCT) scans from 30 adult patients (28 women, two men; 30 CBCTs pre-treatment, 30 post-treatment) were examined retrospectively in order to measure bone volume three-dimensionally. The patients' average age was 36.03 ± 9.7 years. The interradicular bone volume was measured with OsiriX at four levels in the anterior tooth areas of the maxilla and mandible. Differences in bone between T0 and T1 were analyzed with IBM SPSS 21.0 using the Wilcoxon test for paired samples. RESULTS Overall, a slight increase in the quantity of bone was found (0.12 ± 0.73 mm). There was a highly significant increase in bone in the mandible (0.40 ± 0.62 mm; P < 0.001), while in the maxilla there was a slight loss of bone, which was highly significant in the apical third (- 0.16 ± 0.77 mm; P = 0.001). CONCLUSIONS Overall, treatment for adult crowding using an aligner and IER appears to have a positive effect on interradicular bone volume, particularly in patients with severe grades of the condition (periodontally high-risk dentition). This effect is apparently independent of IER. This is extremely important with regard to the treatment outcome, since IER and root proximity have been matters of debate in the literature and teeth should remain firmly embedded in their alveolar sockets.
Collapse
Affiliation(s)
- Andreas Hellak
- Department of Orthodontics, University Hospital Giessen and Marburg, Campus Marburg, Georg-Voigt-Strasse 3, 35039, Marburg, Germany. .,Abt. für Kieferorthopädie, UKGM Standort Marburg, Georg-Voigt-Strasse 3, 35039, Marburg, Germany.
| | - Nicola Schmidt
- Department of Orthodontics, University Hospital Giessen and Marburg, Campus Marburg, Georg-Voigt-Strasse 3, 35039, Marburg, Germany
| | - Michael Schauseil
- Department of Orthodontics, University Hospital Giessen and Marburg, Campus Marburg, Georg-Voigt-Strasse 3, 35039, Marburg, Germany
| | - Steffen Stein
- Department of Orthodontics, University Hospital Giessen and Marburg, Campus Marburg, Georg-Voigt-Strasse 3, 35039, Marburg, Germany
| | | | - Heike Maria Korbmacher-Steiner
- Department of Orthodontics, University Hospital Giessen and Marburg, Campus Marburg, Georg-Voigt-Strasse 3, 35039, Marburg, Germany
| |
Collapse
|
22
|
Harder T, Eckmanns T, Schmidt N, Kern W, Sin MA. Human resources estimates for antibiotic stewardship teams: evidence-based approaches for recommendations are needed. Clin Microbiol Infect 2018; 24:554-556. [DOI: 10.1016/j.cmi.2017.12.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 12/15/2017] [Indexed: 10/18/2022]
|
23
|
Pawlitzki E, Schlenstedt C, Schmidt N, Rotkirch I, Gövert F, Hartwigsen G, Witt K. Spatial orientation and postural control in patients with Parkinson's disease. Gait Posture 2018; 60:50-54. [PMID: 29153480 DOI: 10.1016/j.gaitpost.2017.11.011] [Citation(s) in RCA: 8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 08/31/2017] [Accepted: 11/11/2017] [Indexed: 02/02/2023]
Abstract
Postural instability is one of the most disabling and risky symptoms of advanced Parkinson's disease (PD). The purpose of this study was to investigate whether and how this is mediated by a centrally impaired spatial orientation. Therefore, we performed a spatial orientation study in 21 PD patients (mean age 68years, SD 8.5 years, 9 women) in a medically on condition and 21 healthy controls (mean age 68.9years, SD 5.5years, 14 women). We compared their spatial responses to the horizontal axis (Sakashita's visual target cancellation task), the vertical axis (bucket-test), the sagittal axis (tilt table test) and postural stability using the Fullerton Advanced Balance Scale (FAB). We found larger deviations on the vertical axis in PD patients, although the direct comparisons of performance in PD patients and healthy controls did not reveal significant differences. While the total scores of the FAB Scale were significantly worse in PD (25.9 points, SD 7.2 points) compared to controls (35.1 points, SD 2.3 points, p<0.01), the results from the spatialorientation task did not correlate with the FAB Scale. In summary, our results argue against a relation between perceptional deficits of spatial information and postural control in PD. These results are in favor of a deficit in higher order integration of spatial stimuli in PD that might influence balance control.
Collapse
Affiliation(s)
- E Pawlitzki
- University Medical Center Schleswig-Holstein, Christian-Albrechts-University, Department of Neurology, Arnold-Heller-Straße 3, 24105 Kiel, Germany.
| | - C Schlenstedt
- University Medical Center Schleswig-Holstein, Christian-Albrechts-University, Department of Neurology, Arnold-Heller-Straße 3, 24105 Kiel, Germany
| | - N Schmidt
- University Medical Center Schleswig-Holstein, Christian-Albrechts-University, Department of Neurology, Arnold-Heller-Straße 3, 24105 Kiel, Germany
| | - I Rotkirch
- University Medical Center Schleswig-Holstein, Christian-Albrechts-University, Department of Neurology, Arnold-Heller-Straße 3, 24105 Kiel, Germany
| | - F Gövert
- University Medical Center Schleswig-Holstein, Christian-Albrechts-University, Department of Neurology, Arnold-Heller-Straße 3, 24105 Kiel, Germany
| | - G Hartwigsen
- Department of Neuropsychology, Max Planck Institute for Human Cognitive and Brain Sciences Leipzig, Stephanstraße 1a, 04103 Leipzig, Germany
| | - K Witt
- University Medical Center Schleswig-Holstein, Christian-Albrechts-University, Department of Neurology, Arnold-Heller-Straße 3, 24105 Kiel, Germany; Department of Neurology, School of Medicine and Health Sciences - European Medical School, University Oldenburg, Steinweg 13-17, 26122 Oldenburg, Germany
| |
Collapse
|
24
|
Schmidt N, Schlotter P, Abdulcadir J. Wissenstand FGM/C – Ergebnisse einer Pilotbefragung in München. Geburtshilfe Frauenheilkd 2018. [DOI: 10.1055/s-0038-1622761] [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: 10/28/2022] Open
Affiliation(s)
- N Schmidt
- Fachstelle „Frau & Gesundheit und Gendermedizin“, Referat für Gesundheit und Umwelt LH München
| | - P Schlotter
- Institut für medizinische Informationsverarbeitung, LMU, Medizinische Fakultät, München
| | - J Abdulcadir
- Abteilung für Gynäkologie, Universitätsklinik Genf, Schweiz
| |
Collapse
|
25
|
Corradi E, Schmidt N, Räber N, De Mieri M, Hamburger M, Potterat O, Butterweck V. Metabolite profile and antiproliferative effects in HaCaT cells of a Salix reticulata extract. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608182] [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: 10/18/2022]
Affiliation(s)
- E Corradi
- Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - N Schmidt
- Institute for Pharma Technology, School of Life Sciences, University of Applied Sciences Northwestern Switzerland, Muttenz, Switzerland
| | - N Räber
- Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - M De Mieri
- Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - M Hamburger
- Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - O Potterat
- Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - V Butterweck
- Institute for Pharma Technology, School of Life Sciences, University of Applied Sciences Northwestern Switzerland, Muttenz, Switzerland
| |
Collapse
|
26
|
Schmidt N, Hoyer L. Changing treatment patterns in metastatic colorectal cancer in EU5 countries from 2014 to 2016. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx375.021] [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
|
Beyer DA, Rody A, Cirkel C, Schmidt N, Neumann K. Mandatory colposcopic findings of severe cervical dysplasia. Are there key-signs that need our special attention? J Gynecol Obstet Hum Reprod 2017; 46:643-646. [PMID: 28698072 DOI: 10.1016/j.jogoh.2017.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 06/28/2017] [Accepted: 07/03/2017] [Indexed: 10/19/2022]
Abstract
INTRODUCTION To test for colposcopic differences between CIN2+ and non CIN2+ lesions of the "major changes" of the RIO 2011 nomenclature of the International Federation of Cervical Pathology (IFCPC). MATERIAL AND METHODS Retrospective cohort analysis of colposcopic examinations of patients with histologically confirmed CIN2+ (n=99) and non CIN2+ (n=102) lesions during a four years period. MAIN OUTCOME MEASURES leukoplakia, coarse mosaic and punctuation, dense acetowhitening, sharp boarders, ridge sign, atypical vessels. RESULTS Only coarse punctuation (P≤0.001; OR 9.64; 95% CI 2.15-43.13), coarse mosaic (P≤0.001; OR 4.00; 95% CI 1.83-8.73) and dense acetowhitening (P≤0.05; OR 1.86; 95% CI 1.06-3.26) occurred more frequently in CIN2+ lesions which were confirmed as predictors by a regression analysis. CONCLUSIONS Only coarse punctuation and coarse mosaic followed by dense acetowhitening as part of the "major changes" of the IFCPC Rio 2011 nomenclature achieve predictive values for CIN2+ lesions and should be therefore emphasized in colposcopy.
Collapse
Affiliation(s)
- D A Beyer
- Westpfalz-Klinikum GmbH, Hellmut-Hartert-Str. 1, 67655 Kaiserslautern, Germany
| | - A Rody
- Department of Gynaecology and Obstetrics, University of Luebeck, Luebeck, Germany
| | - C Cirkel
- Department of Gynaecology and Obstetrics, University of Luebeck, Luebeck, Germany
| | - N Schmidt
- Department of Gynaecology and Obstetrics, University of Luebeck, Luebeck, Germany
| | - K Neumann
- Department of Gynaecology and Obstetrics, University of Luebeck, Luebeck, Germany; Section of Gynaecological Endocrinology and Reproductive Medicine, Schleswig-Holstein University, Campus Luebeck, Ratzeburger Allee 160, 23538 Luebeck, Germany.
| |
Collapse
|
28
|
Schmidt N, Quack K, Fargnoli V, Epiney M, Irion O. Exploring barriers to reproductive health services for migrant women in Geneva using a community-based approach. Geburtshilfe Frauenheilkd 2017. [DOI: 10.1055/s-0037-1598145] [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] Open
Affiliation(s)
- N Schmidt
- Departement d'obstétrique et gynécologie (HUG), Genf, Schweiz
| | - K Quack
- FrauenSpital Zürich, Zürich, Schweiz
| | - V Fargnoli
- Département de Sociologie (UNIGE), Genf, Schweiz
| | - M Epiney
- Departement d'obstétrique (HUG), Genf, Schweiz
| | - O Irion
- Departement d'obstétrique et gynécologie (HUG), Genf, Schweiz
| |
Collapse
|
29
|
Abstract
Immunotherapy is considered a new treatment option for many tumor entities, as decades of research into cancer immunotherapy have recently yielded promising results. Indeed, impressive clinical results of checkpoint blockade inhibitors in malignant melanoma and non-small cell lung cancer indicate the therapeutic potential of tumor-specific immune restoration. Over the years, different immunotherapeutic approaches have been evaluated for the treatment of hepatocellular carcinoma (HCC) with some respectable results. In this review article, we will summarize the key studies of the past 30 years and will elucidate in which direction the dynamic field of HCC immunotherapy is currently moving.
Collapse
|
30
|
Schmidt N, Fargnoli V, Epiney M, Irion O. Barriers to reproductive health services for migrant women in Geneva using a qualitative, community-based approach. Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0036-1593055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
|
31
|
Bernhardt M, Schmidt N, Acker K. Changing treatment patterns in advanced & metastatic melanoma towards targeted therapies in EU5 countries from 2011 to 2015. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw387.30] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
32
|
|
33
|
Schmidt N, Schmidt B, Dressel A, Gergei I, Klotsche J, Pieper L, Scharnagel H, Kleber M, März W, Wittchen H, Grammer T. Familial hypercholesterolemia in primary care in germany – Diabetes and cardiovascular risk evaluation: Targets and essential data for commitment of treatment (DETECT) Study. Atherosclerosis 2016. [DOI: 10.1016/j.atherosclerosis.2016.07.160] [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: 11/26/2022]
|
34
|
Fengler S, Roeske S, Heber I, Reetz K, Schulz JB, Riedel O, Wittchen HU, Storch A, Linse K, Baudrexel S, Hilker R, Mollenhauer B, Witt K, Schmidt N, Balzer-Geldsetzer M, Dams J, Dodel R, Gräber S, Pilotto A, Petrelli A, Fünkele S, Kassubek J, Kalbe E. Verbal memory declines more in female patients with Parkinson's disease: the importance of gender-corrected normative data. Psychol Med 2016; 46:2275-2286. [PMID: 27193073 DOI: 10.1017/s0033291716000908] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [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] [Indexed: 12/24/2022]
Abstract
BACKGROUND Data on gender-specific profiles of cognitive functions in patients with Parkinson's disease (PD) are rare and inconsistent, and possible disease-confounding factors have been insufficiently considered. METHOD The LANDSCAPE study on cognition in PD enrolled 656 PD patients (267 without cognitive impairment, 66% male; 292 with mild cognitive impairment, 69% male; 97 with PD dementia, 69% male). Raw values and age-, education-, and gender-corrected Z scores of a neuropsychological test battery (CERAD-Plus) were compared between genders. Motor symptoms, disease duration, l-dopa equivalent daily dose, depression - and additionally age and education for the raw value analysis - were taken as covariates. RESULTS Raw-score analysis replicated results of previous studies in that female PD patients were superior in verbal memory (word list learning, p = 0.02; recall, p = 0.03), while men outperformed women in visuoconstruction (p = 0.002) and figural memory (p = 0.005). In contrast, gender-corrected Z scores showed that men were superior in verbal memory (word list learning, p = 0.02; recall, p = 0.02; recognition, p = 0.04), while no difference was found for visuospatial tests. This picture could be observed both in the overall analysis of PD patients as well as in a differentiated group analysis. CONCLUSIONS Normative data corrected for gender and other sociodemographic variables are relevant, since they may elucidate a markedly different cognitive profile compared to raw scores. Our study also suggests that verbal memory decline is stronger in women than in men with PD. Future studies are needed to replicate these findings, examine the progression of gender-specific cognitive decline in PD and define different underlying mechanisms of this dysfunction.
Collapse
Affiliation(s)
- S Fengler
- Department of Medical Psychology,University Hospital Cologne,Germany
| | - S Roeske
- Department of Neurology,University Hospital Bonn, and German Center for Neurodegenerative Diseases (DZNE),Bonn,Germany
| | - I Heber
- Department of Neurology,Medical Faculty,RWTH Aachen University,Germany
| | - K Reetz
- Department of Neurology,Medical Faculty,RWTH Aachen University,Germany
| | - J B Schulz
- Department of Neurology,Medical Faculty,RWTH Aachen University,Germany
| | - O Riedel
- Leibniz-Institute of Prevention Research and Epidemiology,Department of Clinical Epidemiology,Bremen,Germany
| | - H U Wittchen
- Institute of Clinical Psychology and Psychotherapy, Technische Universität Dresden,Germany
| | - A Storch
- Division of Neurodegenerative Diseases,Department of Neurology,Technische Universität Dresden,Germany
| | - K Linse
- Division of Neurodegenerative Diseases,Department of Neurology,Technische Universität Dresden,Germany
| | - S Baudrexel
- Department of Neurology,J.W. Goethe University,Frankfurt/Main,Germany
| | - R Hilker
- Department of Neurology,J.W. Goethe University,Frankfurt/Main,Germany
| | - B Mollenhauer
- Department of Neuropathology,University Medical Center Goettingen,Germany
| | - K Witt
- Department of Neurology,Christian Albrechts University,Kiel,Germany
| | - N Schmidt
- Department of Neurology,Christian Albrechts University,Kiel,Germany
| | | | - J Dams
- Department of Neurology,Philipps University Marburg,Germany
| | - R Dodel
- Department of Neurology,Philipps University Marburg,Germany
| | - S Gräber
- Department of Neurodegenerative Diseases,Hertie Institute for Clinical Brain Research and German Center for Neurodegenerative Diseases (DZNE), University Tübingen, and German Center for Neurodegenerative Diseases, Tübingen,Germany
| | - A Pilotto
- Department of Neurodegenerative Diseases,Hertie Institute for Clinical Brain Research and German Center for Neurodegenerative Diseases (DZNE), University Tübingen, and German Center for Neurodegenerative Diseases, Tübingen,Germany
| | - A Petrelli
- Institute of Gerontology & Center for Neuropsychological Diagnostics and Intervention (CeNDI), University of Vechta,Germany
| | - S Fünkele
- Department of Neurology,University of Ulm,Germany
| | - J Kassubek
- Department of Neurology,University of Ulm,Germany
| | - E Kalbe
- Department of Medical Psychology,University Hospital Cologne,Germany
| |
Collapse
|
35
|
Laux-Biehlmann A, Boyken J, Dahllöf H, Schmidt N, Zollner TM, Nagel J. Dynamic weight bearing as a non-reflexive method for the measurement of abdominal pain in mice. Eur J Pain 2015; 20:742-52. [PMID: 26684879 DOI: 10.1002/ejp.800] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/06/2015] [Indexed: 12/11/2022]
Abstract
BACKGROUND Chronic pelvic pain (CPP) is a high burden for patients and society. It affects 15-24% of women in reproductive age and is an area of high unmet medical need. CPP can be caused by a wide range of visceral diseases such as abdominal infections, gastrointestinal or gynaecological diseases like endometriosis. Despite the high medical need for this condition, pharmacological approaches are hampered by the limited number of available methods for the behavioural evaluation of pain in inflammation-driven animal models of pelvic pain. METHODS The dynamic weight bearing (DWB) system was used for the evaluation of spontaneous behaviour changes in the zymosan-induced peritonitis mouse model. Inflammatory mediator levels were evaluated in peritoneal lavage and their correlation with the behavioural endpoints was assessed. We evaluated the effect on behavioural endpoints of the selective cyclooxygenase-2 (COX-2) inhibitor celecoxib and the Nav 1.8 blocker A-803467. RESULTS The presence of a relief posture, characterized by a significantly increased weight distribution towards the front paws, was observed following intraperitoneal injection of zymosan. A positive correlation was detected between PGE2 levels in the peritoneal lavage and DWB endpoints. In addition, zymosan-induced weight bearing changes were reverted by celecoxib and A-803467. CONCLUSIONS This study described for the first time the use of DWB as a non-subjective and non-reflexive method for the evaluation of inflammatory-driven abdominal pain in a mouse model.
Collapse
Affiliation(s)
- A Laux-Biehlmann
- Global Drug Discovery, Global Therapeutic Research Groups, Gynecological Therapies, Bayer Healthcare, Berlin, Germany
| | - J Boyken
- Global Drug Discovery, Global Therapeutic Research Groups, Gynecological Therapies, Bayer Healthcare, Berlin, Germany
| | - H Dahllöf
- Global Drug Discovery, Global Therapeutic Research Groups, Gynecological Therapies, Bayer Healthcare, Berlin, Germany
| | - N Schmidt
- Global Drug Discovery, Global Therapeutic Research Groups, Gynecological Therapies, Bayer Healthcare, Berlin, Germany
| | - T M Zollner
- Global Drug Discovery, Global Therapeutic Research Groups, Gynecological Therapies, Bayer Healthcare, Berlin, Germany
| | - J Nagel
- Global Drug Discovery, Global Therapeutic Research Groups, Gynecological Therapies, Bayer Healthcare, Berlin, Germany
| |
Collapse
|
36
|
Pfäfflin F, Schmidt N, Tufa TB, Feldt T. Implementation of the who multimodal hand hygiene improvement strategy in selected wards of Asella Teaching Hospital, Ethiopia. Antimicrob Resist Infect Control 2015. [PMCID: PMC4475133 DOI: 10.1186/2047-2994-4-s1-p153] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
37
|
Abstract
Soft robots can exhibit diverse behaviors with simple types of actuation by partially outsourcing control to the morphological and material properties of their soft bodies, which is made possible by the tight coupling between control, body, and environment. In this paper, we present a method that will quantitatively characterize these diverse spatiotemporal dynamics of a soft body based on the information-theoretic approach. In particular, soft bodies have the ability to propagate the effect of actuation through the entire body, with a certain time delay, due to their elasticity. Our goal is to capture this delayed interaction in a quantitative manner based on a measure called momentary information transfer. We extend this measure to soft robotic applications and demonstrate its power using a physical soft robotic platform inspired by the octopus. Our approach is illustrated in two ways. First, we statistically characterize the delayed actuation propagation through the body as a strength of information transfer. Second, we capture this information propagation directly as local information dynamics. As a result, we show that our approach can successfully characterize the spatiotemporal dynamics of the soft robotic platform, explicitly visualizing how information transfers through the entire body with delays. Further extension scenarios of our approach are discussed for soft robotic applications in general.
Collapse
Affiliation(s)
- K Nakajima
- The Hakubi Center for Advanced Research, Kyoto University, 606-8501 Kyoto, Japan. Department of Applied Analysis and Complex Dynamical Systems, Graduate School of Informatics, Kyoto University, 606-8501 Kyoto, Japan
| | | | | |
Collapse
|
38
|
Paschen L, Schmidt N, Wolff S, Cnyrim C, van Eimeren T, Zeuner KE, Deuschl G, Witt K. The olfactory bulb volume in patients with idiopathic Parkinson's disease. Eur J Neurol 2015; 22:1068-73. [PMID: 25912367 DOI: 10.1111/ene.12709] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [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: 11/22/2014] [Accepted: 02/06/2015] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND PURPOSE This study addresses the question of whether the neuropathological findings on the olfactory bulb (OB) in idiopathic Parkinson's disease (IPD) correspond to a detectable change in volume of the OB. Additionally, the relationship between OB volume and residual olfactory function, clinical disease characteristics and age are investigated. METHODS Fifty-two IPD patients were investigated and compared to 31 healthy age-matched controls. All participants were scanned using a 3 T magnetic resonance imaging MRI scanner including a T2 DRIVE sequence in coronal slices through the OB. The OB volumes were measured via manual segmentation of the OB. Olfactory testing was carried out using the Sniffin' Sticks test battery. RESULTS The OB volume in the IPD group was 42.1 mm³ (SD ± 11.6) for the right and 41.5 mm³ (SD ± 11.7) for the left OB and showed no difference from the controls. Additionally, there were no significant correlations between OB volume and disease characteristics such as disease duration or Unified Parkinson's Disease Rating Scale motor score. Likewise, patients' residual smell function did not correlate with their OB volume. In contrast, controls indicated a correlation between smell function and OB volume. CONCLUSION The study shows that high resolution MRI does not show a detectable volume loss of the OB in PD patients. It is concluded that OB measurement using in vivo high resolution MRI at 3 T is not helpful to identify IPD.
Collapse
Affiliation(s)
- L Paschen
- Department of Neurology, University Hospital Schleswig-Holstein, Kiel Campus, Christian-Albrechts-University Kiel, Kiel, Germany
| | - N Schmidt
- Department of Neurology, University Hospital Schleswig-Holstein, Kiel Campus, Christian-Albrechts-University Kiel, Kiel, Germany
| | - S Wolff
- Department of Radiology and Neuroradiology, University Hospital Schleswig-Holstein, Kiel Campus, Christian-Albrechts-University Kiel, Kiel, Germany
| | - C Cnyrim
- Department of Radiology and Neuroradiology, University Hospital Schleswig-Holstein, Kiel Campus, Christian-Albrechts-University Kiel, Kiel, Germany
| | - T van Eimeren
- Department of Neurology, University Hospital Schleswig-Holstein, Kiel Campus, Christian-Albrechts-University Kiel, Kiel, Germany
| | - K E Zeuner
- Department of Neurology, University Hospital Schleswig-Holstein, Kiel Campus, Christian-Albrechts-University Kiel, Kiel, Germany
| | - G Deuschl
- Department of Neurology, University Hospital Schleswig-Holstein, Kiel Campus, Christian-Albrechts-University Kiel, Kiel, Germany
| | - K Witt
- Department of Neurology, University Hospital Schleswig-Holstein, Kiel Campus, Christian-Albrechts-University Kiel, Kiel, Germany
| |
Collapse
|
39
|
|
40
|
Schmidt N, Witt K. Konzept der hypodopaminergen und hyperdopaminergen Verhaltensstörungen bei Parkinson-Patienten. Akt Neurol 2014. [DOI: 10.1055/s-0034-1370239] [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: 10/25/2022]
Affiliation(s)
- N. Schmidt
- Klinik für Neurologie, Universitätsklinikum Schleswig-Holstein, Kiel
| | - K. Witt
- Klinik für Neurologie, Universitätsklinikum Schleswig-Holstein, Kiel
| |
Collapse
|
41
|
Abstract
HISTORY AND ADMISSION FINDINGS A 37-year-old man complained about a lack of strength, an unproductive cough and myalgia predominantly thigh-focused with subfebrile temperatures for days. INVESTIGATIONS Laboratory investigations indicated rhabdomyolysis with acute kidney injury (AKI). Drug misuse was denied. Exertion and trauma could be excluded as well as rheumatologic or other infectious causes often responsible for rhabdomyolysis. PCR of a nasopharyngeal swab was positive for influenza A virus subtype H1N1. TREATMENT AND COURSE Because of a progressive course of AKI haemodialysis was initiated. Levels of creatine kinase declined and urinary excretion rised. Hypocalcaemia due to secondary hyperparathyreoidism was substituted. During hospitalisation two seizures appeared. After performing a magnetic resonance imaging (MRI) the seizures could be attributed to a posterior reversible encephalopathy syndrome (PRES) secondary to influenza infection. A medication with valproic acid was initiated. CONCLUSION Extrapulmonary manifestations of an influenza A (H1N1) virus infection are rare but have to be considered after exclusion of differential diagnosis in younger patients in particular. In addition to a therapy with neuraminidase inhibitors a symptomatic treatment is of paramount significance.
Collapse
Affiliation(s)
- G Fröhlich
- Medizinische Klinik I, Dr. Horst Schmidt Kliniken (HSK) Wiesbaden
| | | | | | | | | |
Collapse
|
42
|
Bert B, Schmidt N, Voigt J, Fink H, Rex A. Evaluation of cage leaving behaviour in rats as a free choice paradigm. J Pharmacol Toxicol Methods 2013; 68:240-249. [DOI: 10.1016/j.vascn.2013.01.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Revised: 12/28/2012] [Accepted: 01/02/2013] [Indexed: 10/27/2022]
|
43
|
Kissinger P, White S, Schmidt N, Taylor SN, Mena L, Lillis R, Some S, Defayette K, Adamski A, Rosenthal SL. O07.1 Sexual Relationship Importance and Condom Use Among Men Attending STD Clinics in Two Southern Cities in the United States. Br J Vener Dis 2013. [DOI: 10.1136/sextrans-2013-051184.0119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
44
|
Kissinger P, White S, Schmidt N, Taylor SN, Mena L, Lillis R, Some SA, Defayette K, Martin DH. P2.095 Origins of Repeat Infections with Mycoplasma Genitalium (Mg) Among Heterosexual Men in Two Southern U.S. Cities. Br J Vener Dis 2013. [DOI: 10.1136/sextrans-2013-051184.0359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
45
|
Kissinger P, Adamski A, Clark RA, Mena L, Henderson H, Levison J, Schmidt N, Martin D. P2.102 The Influence of Anti Retroviral Treatment (ART) on the Treatment of Trichomonas Vaginalis Among HIV-Infected Women in Three Southern Cities the U.S. Br J Vener Dis 2013. [DOI: 10.1136/sextrans-2013-051184.0366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
46
|
Kissinger P, White S, Schmidt N, Taylor SN, Mena L, Lillis R, Some S, Defayette K, Martin D. P2.086 Origins of Repeat Infections with Chlamydia Trachomatis (Ct) Among Heterosexual Men in Two Southern Cities in the United States. Br J Vener Dis 2013. [DOI: 10.1136/sextrans-2013-051184.0350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
47
|
Hadji P, Ziller V, Kyvernitakis J, Schmidt N, Kostev K. Persistence with bisphosphonates in patients with metastatic breast cancer: a retrospective database analysis. J Cancer Res Clin Oncol 2013; 139:1149-55. [PMID: 23552873 DOI: 10.1007/s00432-013-1427-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Accepted: 03/23/2013] [Indexed: 12/21/2022]
Abstract
BACKGROUND In women with breast cancer and bone metastasis, compliance to antiresorptive treatment is of upmost importance to ensure maximum effectiveness in clinical practice. The aim of our study was to investigate persistence with oral and intravenous bisphosphonates (BIS) in a large group of women with metastatic breast cancer and to identify the determinants of non-persistence. PATIENTS AND METHODS We used data from the Disease Analyzer database (IMS Health, Germany), which includes 2,067 general practices and 397 gynaecological practices. From a dataset of 20 million patients, we identified 1,045 patients diagnosed between January 2001 and December 2010 with bone metastasis (ICD 10: C795) following breast cancer (ICD 10: C50) with first-time cancer-related bisphosphonate prescriptions (ATC: M03B4). Of these, 763 patients received intravenous treatment, and 280 patients received oral BIS treatment. RESULTS After 1 year, 35.3 % of patients treated with intravenous, and 45.6 % of patients treated with oral bisphosphonates discontinued their therapy (p = 0.002). Multivariate Cox Regression analyses showed a significant increased risk of treatment discontinuation in patients using intravenous BIS (HR: 0.82) compared with oral BIS. Patients younger than 50 (HR: 1.52) were most likely to discontinue treatment compared with the reference group of women over 70. The use of other treatments, such as chemotherapy or hormone therapy, was associated with a decreased risk of treatment discontinuation. Moreover, treatment discontinuation was higher in West Germany compared with East Germany (HR: 1.65) and in patients covered under private health insurance (HR: 1.33). CONCLUSIONS Persistence with all bisphosphonate treatments in women with breast cancer and bone metastasis is low and needs to be significantly increased to improved outcomes in clinical practice. Further research is required to understand this complex issue.
Collapse
Affiliation(s)
- P Hadji
- Department of Gynaecology, Philipps-University of Marburg, Marburg, Germany
| | | | | | | | | |
Collapse
|
48
|
Abstract
Hepatocellular carcinoma (HCC) is the fifth most common tumor worldwide with a high mortality. Available therapeutical options are limited, thus the development of new, innovative therapeutic strategies is crucial. Based on the immune system's antitumoral effect, immunotherapy is a promising new treatment option. Specific antitumoral T-cell responses can be detected in patients with HCC, however, their impact on tumor control seems to be rather weak. Various different immunosuppressive mechanisms seem to contribute to the failure of tumor-specific T-cell responses. Thus, the aim of immunotherapeutic strategies is to address these mechanisms of T-cell failure and to induce new or to boost existing antitumoral immune responses.
Collapse
Affiliation(s)
- N Schmidt
- Abteilung Innere Medizin II, Universitätsklinikum Freiburg, Freiburg
| | | | | |
Collapse
|
49
|
Schmidt N, Horvath-Puho E, Thomsen R. Acute Infections and Venous Thromboembolism. J Vasc Surg 2013. [DOI: 10.1016/j.jvs.2012.12.010] [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: 11/24/2022]
|
50
|
Hadji P, Ziller V, Kyvernitakis J, Bauer M, Haas G, Schmidt N, Kostev K. Persistence in patients with breast cancer treated with tamoxifen or aromatase inhibitors: a retrospective database analysis. Breast Cancer Res Treat 2013; 138:185-91. [PMID: 23334803 DOI: 10.1007/s10549-013-2417-1] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Accepted: 01/12/2013] [Indexed: 12/15/2022]
Abstract
Compliance and persistence are often underestimated in breast cancer (BC) treatment. The aim of our study was to analyze the persistence with tamoxifen (TAM) and aromatase inhibitors (AI) in postmenopausal women with hormone-receptor-positive BC and to identify determinants of non-persistence. We used data of the Disease Analyzer database (IMS HEALTH, Germany) including 2,067 general practices and 397 gynecological practices. Out of a dataset of 15 million patients, we identified BC patients with a first-time TAM or AI prescriptions from October 2001 to December 2010. For persistence analyses, 12,412 women on tamoxifen, 2,796 on anastrozole, 647 on exemestane, and 1,657 on letrozole met the inclusion/exclusion criteria. Within 3 years of follow-up, the discontinuation rates increased to 52.2 % for tamoxifen, 47 % for anastrozole, 55.1 % for exemestane, and 44.3 % for letrozole treated women. A minor proportion of patients switched to a different endocrine treatment; 33 % tamoxifen, 20 % anastrozole, 22.9 % exemestane, and 23 % letrozole. The multivariate hazard ratios of the cox regression models showed that patients younger than 50 were most likely to discontinue initial therapy when compared with the reference group of women over 70 (p < 0.001). In contrast, patients treated in gynecologist practice had significantly longer persistence than patients who obtained their prescriptions in general practitioner practice (p < 0.001). In addition, the presence of the co morbidities like diabetes (p < 0.001) or depression (p < 0.002) was also associated with decreased risk of treatment discontinuation. Persistence with all endocrine treatments in women with hormone-receptor-positive BC is low and needs to be significantly increased to improved outcome in clinical practice. Further research is required to understand this complex issue.
Collapse
Affiliation(s)
- P Hadji
- Department of Gynecology, Endocrinology and Oncology, Phillips-University of Marburg, Marburg, Germany
| | | | | | | | | | | | | |
Collapse
|