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- Roland, P, et al.
(författare)
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A database generator for human brain imaging
- 2001
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Ingår i: TINS - Trends in Neurosciences. - 0166-2236 .- 1878-108X. ; 24:10, s. 562-564
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Tidskriftsartikel (refereegranskat)abstract
- Sharing scientific data containing complex information requires new concepts and new technology. NEUROGENERATOR is a database generator for the neuroimaging community. A database generator is a database that generates new databases. The scientists submit raw PET and fMRI data to NEUROGENERATOR, which then processes the data in a uniform way to create databases of homogenous data suitable for data sharing, met-analysis and modelling the human brain at the systems level. These databases are then distributed to the scientists.
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| 4. |
- Banhart, S., et al.
(författare)
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Identification of a new Association between Genogroup G10557 (G7072) and Cefixime Resistance by means of molecular Typing of Neisseria gonorrhoeae Isolates in Germany (2014-2017)
- 2021
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Ingår i: Der Hautarzt. - : Springer. - 0017-8470 .- 1432-1173. ; 72:Suppl. 1, s. S8-S9
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Hintergrund/Fragestellung: Die Behandlung von Neisseria gonorrhoeae-Infektionen ist aufgrund sich neu entwickelnder Antibiotikaresistenzen gefährdet. Folglich sind Surveillance-Programme zur Beschreibung der antimikrobiellen Resistenz (AMR) und molekularen Epidemiologie bei Gonokokken auf nationaler und internationaler Ebene dringend erfor-derlich. In Deutschland wurde hierfür im Jahr 2013 das Gonokokken-Resistenznetzwerk (GORENET) etabliert. Unser Ziel war es, die geneti-sche Diversität von N. gonorrhoeae-Isolaten in Deutschland von 2014 bis 2017 mittels NG-MAST (N. gonorrhoeae multi-antigen sequence typing) zu beschreiben.Methoden: N. gonorrhoeae-Isolate aus den Jahren 2014–2017 (n=1220; 106 aus 2014, 122 aus 2015, 511 aus 2016 und 481 aus 2017) wurden deutschlandweit eingesandt und mittels AMR-Testung und NG-MAST charakterisiert.Ergebnisse: 88,4% aller Isolate stammten von Männern, 11,2% von Frauen. Das mediane Alter lag bei 32 Jahren (Interquartalsabstand; IQA: 25–44 Jahre). Insgesamt wurden 432 verschiedene NG-MAST-Sequenztypen (STs) einschließlich 146 neuer STs detektiert. Daraus resultieren 17 verschiedene Genogruppen, welche 59,2% aller Isolate beinhalten. Genogruppen G1407 und G10557 (G7072) waren signifikant mit Cefixim-Resistenz assoziiert. Dabei sank der Anteil dieser Genogruppen von 2014–2017 von 14,2 auf 6,2% (G1407) bzw. von 6,6 auf 3,1% (G10557 (G7072)),wohingegen der Anteil mehrerer Cefixim-empfindlicher Genogruppen (G11461, von 0,0 auf 5,6%; G17420, von 0,0 auf 5,0%; und G5441, von 0,9 und 4,8%) im gleichen Zeitraum anstieg.Schlussfolgerungen: In dieser Arbeit beschreiben wir Neisseria gonorrhoeae in Deutschland als eine genetisch diverse und variable Population und identifizieren eine neue Assoziation zwischen Genogruppe G10557 (G7072) und Cefixim-Resistenz. Diese Ergebnisse unterstreichen die Bedeutung der AMR-Überwachung auf der detaillierten Ebene molekularer Typisierung. Darüber hinaus deuten unsere Daten darauf hin, dass es mit Einführung einer dualen Therapie aus Ceftriaxon und Azithromycin und dem konsekutiv verminderten Einsatz von Cefixim zu einem Rückgang von Cefixim-resistenten Stämmen gekommen ist.
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- Warnke, Clemens, et al.
(författare)
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Cerebrospinal Fluid JC Virus Antibody Index for Diagnosis of Natalizumab-Associated Progressive Multifocal Leukoencephalopathy
- 2014
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Ingår i: Annals of Neurology. - : Wiley. - 0364-5134 .- 1531-8249. ; 76:6, s. 792-801
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Tidskriftsartikel (refereegranskat)abstract
- Objective: Progressive multifocal leukoencephalopathy (PML), caused by JC virus (JCV), can occur in patients receiving natalizumab for multiple sclerosis (MS). JCV detection by quantitative polymerase chain reaction (qPCR) in cerebrospinal fluid (CSF), or brain biopsy, is required for probable or definite diagnosis of PML. However, in some patients only low levels of JCV DNA (<100 copies/ml) are present in CSF, making the diagnosis challenging. Our objective was to assess the complementary value of a CSF JCV antibody index (AI(JCV)) in the diagnosis of natalizumab-associated PML.Methods: AI(JCV) was assessed in 37 cases of natalizumab-associated PML and 89 MS-patients treated with natalizumab without PML. Sera and CSF were tested in a capture enzyme-linked immunosorbent assay, using JCV-VP1 fused to glutathione S-transferase as antigen. Albumin levels and total immunoglobulin G concentration were determined by immunonephelometry, and the AI(JCV) was calculated as published.Results:Twenty-six of 37 (70%) patients with natalizumab-associated PML exhibited an AI(JCV) > 1.5, whereas this was seen in none of the controls (p < 0.0001). At time of the first positive qPCR for JCV DNA, 11 of 20 (55%) patients with natalizumab-associated PML had an AI(JCV) > 1.5. JCV DNA levels of <100 copies/ml were seen in 14 (70%) of these 20 patients, of whom 8 (57%) demonstrated an AI(JCV) > 1.5.Interpretation: Determination of the AI(JCV) could be an added tool in the diagnostic workup for PML and should be included in the case definition of natalizumab-associated PML. Ann Neurol 2014;76:792-801
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| 7. |
- Warnke, Clemens, et al.
(författare)
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Natalizumab exerts a suppressive effect on surrogates of B cell function in blood and CSF
- 2015
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Ingår i: Multiple Sclerosis Journal. - : Sage Publications. - 1352-4585 .- 1477-0970. ; 21:8, s. 1036-1044
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Tidskriftsartikel (refereegranskat)abstract
- Background: Natalizumab for multiple sclerosis (MS) increases the risk of progressive multifocal leukoencephalopathy (PML). Objective: We aimed to assess the effect of natalizumab on cellular composition and functional B cell parameters including patients with natalizumab-associated PML (n=37). Methods: Cellular composition by flow cytometry, levels of immunoglobulin (Ig)G/IgM by immunonephelometry, and oligoclonal bands by isoelectric focusing were studied in blood and cerebrospinal fluid. Results: In MS patients treated with natalizumab without PML (n=59) the proportion of CD19+ B cells was higher in blood, but lower in cerebrospinal fluid compared with MS patients not treated with natalizumab (n=17). The CD4/CD8-ratio in cerebrospinal fluid was lower, and IgG and IgM levels as well as the IgG index dropped in longitudinal samples during natalizumab therapy. Oligoclonal bands persisted, but the total amount of the intrathecally produced IgG fraction, and the polyclonal intrathecal IgG reactivity to measles, rubella, and zoster declined. At the time of diagnosis of PML patients with natalizumab-associated PML had low total IgG levels in blood and cerebrospinal fluid. Conclusions: Natalizumab impacts B and T cell distribution and exerts an inhibitory effect on surrogates of B cell function in periphery and in cerebrospinal fluid, potentially contributing to the increased risk of developing PML.
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