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Kellermair L, Höfer C, Zeller MWG, Kubasta C, Bandke D, Weis S, Kellermair J, Forstner T, Helbok R, Vosko MR. Endothelial receptor proteins in acute venous thrombosis and delayed thrombus resolution in cerebral sinus vein thrombosis. J Neurol 2024:10.1007/s00415-024-12225-3. [PMID: 38578497 DOI: 10.1007/s00415-024-12225-3] [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: 12/14/2023] [Revised: 01/22/2024] [Accepted: 01/24/2024] [Indexed: 04/06/2024]
Abstract
BACKGROUND AND PURPOSE Cerebral sinus venous thrombosis (CSVT) is a rare but life-threatening disease and its diagnosis remains challenging. Blood biomarkers, including D-Dimer are currently not recommended in guidelines. Soluble endothelial receptor proteins (sICAM-1, sPECAM-1 and sVCAM-1) have been shown to be promising diagnostic biomarkers in deep vein thrombosis (DVT) and pulmonary embolism (PE). Therefore, we examined endothelial receptor proteins as potential biomarkers for detecting CSVT. METHODS In this bi-centre, prospective study, we quantified D-Dimer as well as sICAM-1, sPECAM-1 and sVCAM-1 in plasma of patients with clinically suspected CSVT managed in the neurological emergency department (ED) of a tertiary care hospital. All patients underwent cerebral magnetic resonance imaging (MRI) and were followed up after 3, 6 and 12 months to detect thrombus resolution. RESULTS Twenty-four out of 75 (32%) patients with clinically suspected CSVT presenting with headache to the ED were diagnosed with acute CSVT. These patients had a mean age of 45 ± 16 years and 78% were female. In patients with CSVT, mean baseline D-dimer (p < 0.001) and sPECAM-1 (p < 0.001) were significantly higher compared to patients without CSVT. The combination of D-Dimer and sPECAM-1 yielded the best ROC-AUC (0.994; < 0.001) with a negative predictive value of 95.7% and a positive predictive value of 95.5%. In addition, higher baseline sPECAM-1 levels (> 198 ng/ml) on admission were associated with delayed venous thrombus resolution at 3 months (AUC = 0.83). CONCLUSION sPECAM-1 in combination with D-Dimer should be used to improve the diagnostic accuracy of acute CSVT and sPECAM-1 may predict long-term outcome of CSVT. Confirmatory results are needed in other settings in order to show their value in the management concept of CSVT patients.
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Affiliation(s)
- Lukas Kellermair
- Department of Neurology, Kepler University Hospital GmbH, Johannes Kepler University Linz, Krankenhausstr. 9, 4021, Linz, Austria
| | - Christoph Höfer
- Department of Neurology, The Hospital of the Brothers of Saint John of God, Linz, Austria
| | - Matthias W G Zeller
- Department of Neurology, Kepler University Hospital GmbH, Johannes Kepler University Linz, Krankenhausstr. 9, 4021, Linz, Austria
| | - Christa Kubasta
- Department of Laboratory Medicine, Kepler University Hospital, Linz, Austria
- Medical Faculty, Johannes Kepler University, Linz, Austria
| | - Dave Bandke
- Division of Neuropathology, Department of Pathology and Molecular Pathology, Kepler University Hospital, Neuromed Campus, Linz, Austria
- Medical Faculty, Johannes Kepler University, Linz, Austria
| | - Serge Weis
- Division of Neuropathology, Department of Pathology and Molecular Pathology, Kepler University Hospital, Neuromed Campus, Linz, Austria
- Medical Faculty, Johannes Kepler University, Linz, Austria
| | - Jörg Kellermair
- Medical Faculty, Johannes Kepler University, Linz, Austria
- Department of Cardiology, Kepler University Hospital, Med Campus III, Linz, Austria
| | - Thomas Forstner
- Department of Applied Systems Research and Statistics, Johannes Kepler University Linz, Linz, Austria
| | - Raimund Helbok
- Department of Neurology, Kepler University Hospital GmbH, Johannes Kepler University Linz, Krankenhausstr. 9, 4021, Linz, Austria
| | - Milan R Vosko
- Department of Neurology, Kepler University Hospital GmbH, Johannes Kepler University Linz, Krankenhausstr. 9, 4021, Linz, Austria.
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Corretto E, Antonielli L, Sessitsch A, Höfer C, Puschenreiter M, Widhalm S, Swarnalakshmi K, Brader G. Comparative Genomics of Microbacterium Species to Reveal Diversity, Potential for Secondary Metabolites and Heavy Metal Resistance. Front Microbiol 2020; 11:1869. [PMID: 32903828 PMCID: PMC7438953 DOI: 10.3389/fmicb.2020.01869] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 07/16/2020] [Indexed: 12/11/2022] Open
Abstract
Microbacterium species have been isolated from a wide range of hosts and environments, including heavy metal-contaminated sites. Here, we present a comprehensive analysis on the phylogenetic distribution and the genetic potential of 70 Microbacterium belonging to 20 different species isolated from heavy metal-contaminated and non-contaminated sites with particular attention to secondary metabolites gene clusters. The analyzed Microbacterium species are divided in three main functional clades. They share a small core genome (331 gene families covering basic functions) pointing to high genetic diversity. The most common secondary metabolite gene clusters encode pathways for the production of terpenoids, type III polyketide synthases and non-ribosomal peptide synthetases, potentially responsible of the synthesis of siderophore-like compounds. In vitro tests showed that many Microbacterium strains produce siderophores, ACC deaminase, auxins (IAA) and are able to solubilize phosphate. Microbacterium isolates from heavy metal contaminated sites are on average more resistant to heavy metals and harbor more genes related to metal homeostasis (e.g., metalloregulators). On the other hand, the ability to increase the metal mobility in a contaminated soil through the secretion of specific molecules seems to be widespread among all. Despite the widespread capacity of strains to mobilize several metals, plants inoculated with selected Microbacterium isolates showed only slightly increased iron concentrations, whereas concentrations of zinc, cadmium and lead were decreased.
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Affiliation(s)
- Erika Corretto
- Bioresouces Unit, Center for Health & Bioresources, AIT Austrian Institute of Technology GmbH, Tulln, Austria
| | - Livio Antonielli
- Bioresouces Unit, Center for Health & Bioresources, AIT Austrian Institute of Technology GmbH, Tulln, Austria
| | - Angela Sessitsch
- Bioresouces Unit, Center for Health & Bioresources, AIT Austrian Institute of Technology GmbH, Tulln, Austria
| | - Christoph Höfer
- Institute of Soil Research, Department of Forest- and Soil Sciences, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Markus Puschenreiter
- Institute of Soil Research, Department of Forest- and Soil Sciences, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Siegrid Widhalm
- Bioresouces Unit, Center for Health & Bioresources, AIT Austrian Institute of Technology GmbH, Tulln, Austria
| | | | - Günter Brader
- Bioresouces Unit, Center for Health & Bioresources, AIT Austrian Institute of Technology GmbH, Tulln, Austria
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Busch M, Herzmann C, Kallert S, Zimmermann A, Höfer C, Mayer D, Zenk SF, Muche R, Lange C, Bloom BR, Modlin RL, Stenger S. Lipoarabinomannan-Responsive Polycytotoxic T Cells Are Associated with Protection in Human Tuberculosis. Am J Respir Crit Care Med 2017; 194:345-55. [PMID: 26882070 DOI: 10.1164/rccm.201509-1746oc] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE The development of host-targeted, prophylactic, and therapeutic interventions against tuberculosis requires a better understanding of the immune mechanisms that determine the outcome of infection with Mycobacterium tuberculosis. OBJECTIVES To identify T-cell-dependent mechanisms that are protective in tuberculosis. METHODS Multicolor flow cytometry, cell sorting and growth inhibition assays were employed to compare the frequency, phenotype and function of T lymphocytes from bronchoalveolar lavage or the peripheral blood. MEASUREMENTS AND MAIN RESULTS At two independent study sites, bronchoalveolar lavage cells from donors with latent tuberculosis infection limited the growth of virulent Mycobacterium tuberculosis more efficiently than those in patients who developed disease. Unconventional, glycolipid-responsive T cells contributed to reduced mycobacterial growth because antibodies to CD1b inhibited this effect by 55%. Lipoarabinomannan was the most potent mycobacterial lipid antigen (activation of 1.3% T lymphocytes) and activated CD1b-restricted T cells that limited bacterial growth. A subset of IFN-γ-producing lipoarabinomannan-responsive T cells coexpressed the cytotoxic molecules perforin, granulysin, and granzyme B, which we termed polycytotoxic T cells. Taking advantage of two well-defined cohorts of subjects latently infected with Mycobacterium tuberculosis or patients who developed active disease after infection, we found a correlation between the frequency of polycytotoxic T cells and the ability to control infection (latent tuberculosis infection, 62%; posttuberculosis patients, 26%). CONCLUSIONS Our data define an unconventional CD8(+) T-cell subset (polycytotoxic T cells) that is based on antigen recognition and function. The results link clinical and mechanistic evidence that glycolipid-responsive, polycytotoxic T cells contribute to protection against tuberculosis.
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Affiliation(s)
- Martin Busch
- 1 Institute for Medical Microbiology and Hygiene, University Hospital Ulm, Ulm, Germany
| | - Christian Herzmann
- 2 Division of Clinical Infectious Diseases, German Center for Infection Research, Borstel, Germany
| | - Stephanie Kallert
- 1 Institute for Medical Microbiology and Hygiene, University Hospital Ulm, Ulm, Germany
| | - Andreas Zimmermann
- 1 Institute for Medical Microbiology and Hygiene, University Hospital Ulm, Ulm, Germany
| | - Christoph Höfer
- 1 Institute for Medical Microbiology and Hygiene, University Hospital Ulm, Ulm, Germany
| | - Daniel Mayer
- 1 Institute for Medical Microbiology and Hygiene, University Hospital Ulm, Ulm, Germany
| | - Sebastian F Zenk
- 1 Institute for Medical Microbiology and Hygiene, University Hospital Ulm, Ulm, Germany
| | - Rainer Muche
- 3 Institute for Epidemiology and Medical Biometry, Ulm University, Ulm, Germany
| | - Christoph Lange
- 2 Division of Clinical Infectious Diseases, German Center for Infection Research, Borstel, Germany
| | - Barry R Bloom
- 4 Harvard School of Public Health, Boston, Massachusetts; and
| | - Robert L Modlin
- 5 Division of Dermatology, Department of Medicine, University of California, Los Angeles, Los Angeles, California
| | - Steffen Stenger
- 1 Institute for Medical Microbiology and Hygiene, University Hospital Ulm, Ulm, Germany
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Corretto E, Antonielli L, Sessitsch A, Compant S, Höfer C, Puschenreiter M, Brader G. Complete genome sequence of the heavy metal resistant bacterium Agromyces aureus AR33 T and comparison with related Actinobacteria. Stand Genomic Sci 2017; 12:2. [PMID: 28074120 PMCID: PMC5217419 DOI: 10.1186/s40793-016-0217-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 12/06/2016] [Indexed: 11/17/2022] Open
Abstract
Agromyces aureus AR33T is a Gram-positive, rod-shaped and motile bacterium belonging to the Microbacteriaceae family in the phylum Actinobacteria that was isolated from a former zinc/lead mining and processing site in Austria. In this study, the whole genome was sequenced and assembled combining sequences obtained from Illumina MiSeq and Sanger sequencing. The assembly resulted in the complete genome sequence which is 4,373,124 bp long and has a GC content of 70.1%. Furthermore, we performed a comparative genomic analysis with other related organisms: 6 Agromyces spp., 4 Microbacteriaceae spp. and 2 other members of the class Actinobacteria.
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Affiliation(s)
- Erika Corretto
- AIT Austrian Institute of Technology, Health and Environment Department, Konrad-Lorenz-Straße 24, A-3430 Tulln, Austria
| | - Livio Antonielli
- AIT Austrian Institute of Technology, Health and Environment Department, Konrad-Lorenz-Straße 24, A-3430 Tulln, Austria
| | - Angela Sessitsch
- AIT Austrian Institute of Technology, Health and Environment Department, Konrad-Lorenz-Straße 24, A-3430 Tulln, Austria
| | - Stéphane Compant
- AIT Austrian Institute of Technology, Health and Environment Department, Konrad-Lorenz-Straße 24, A-3430 Tulln, Austria
| | - Christoph Höfer
- Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences (BOKU), Konrad-Lorenz-Straβe 24, A-3430 Tulln, Austria
| | - Markus Puschenreiter
- Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences (BOKU), Konrad-Lorenz-Straβe 24, A-3430 Tulln, Austria
| | - Günter Brader
- AIT Austrian Institute of Technology, Health and Environment Department, Konrad-Lorenz-Straße 24, A-3430 Tulln, Austria
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Höfer C, Mühlbacher T, Krutz B, Selig M, Kluthe C. Harlekin Ichthyosis – eine interdisziplinäre Herausforderung. Z Geburtshilfe Neonatol 2013. [DOI: 10.1055/s-0033-1361371] [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: 10/26/2022]
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Steiner E, Alexander E, Höfer C, Schaffer K. [The efficacy of an individualized treatment schedule to maintain treatment adherence in an urban community mental health center]. Psychiatr Prax 2001; 28:278-83. [PMID: 11533894 DOI: 10.1055/s-2001-16879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
OBJECTIVE We present an observational study on the efficacy of an individualized treatment schedule, which is meant to support treatment adherence in an urban community mental health center (CMHC). METHODS The present investigation was carried out in the natural setting of a CMHC in Vienna. During a 3-month period we observed the compliance with the appointments and the actions taken by the team in response to missed appointments as well as the utilization of the CMHC during a follow-up period of 6 months. RESULTS During the observation period 393 (19,2 %) of 2049 scheduled visits were missed affecting more than half of the patients. Only a minority of patients with low-intensity treatment and a high rate of missed appointments had a high risk for discontinuing treatment. CONCLUSIONS Missed appointments in outpatient psychiatric care are a common phenomenon but they constitute no major threat to the continuity of care for the majority of the patients due to the graduated efforts of the team. The time required to make up for missed appointments is considerable but the results of the follow-up confirmed the beneficial effects on utilization of psychiatric care.
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Affiliation(s)
- E Steiner
- Kuratorium für Psychosoziale Dienste, Wien, Germany.
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Grey R, Höfer C, Schlosser D. Degradation of 2-chlorophenol and formation of 2-chloro-1,4-benzoquinone by mycelia and cell-free crude culture liquids of Trametes versicolor in relation to extracellular laccase activity. J Basic Microbiol 2000; 38:371-82. [PMID: 9871333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
The white-rot fungus Trametes versicolor was used to study the influence of extracellular laccase activity on the degradation of 2-chlorophenol (2-CP) and the formation of metabolites under conditions, characterized by the absence of other phenol-oxidizing enzymes. 2-CP enhanced the production of extracellular laccase by fungal mycelia. The formation of the metabolite 2-chloro-1,4-benzoquinone (2-CIBQ) was found to be correlated with extracellular laccase activity. In cell-free crude culture liquids laccase was responsible for the oxidation of 2-CP. In contrast to this, the disappearance of 2-CP caused by the entire organism did not correlate with extracellular laccase activity. The primary oxidative step during the degradation of this compound can thus only partially be attributed to extracellular laccase; indicating the involvement of cell-bound processes.
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Affiliation(s)
- R Grey
- Institute of Microbiology, University of Jena, Germany
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Abstract
Fungal laccases are extracellular multinuclear copper-containing oxidases that have been proposed to be involved in ligninolysis and degradation of xenobiotics. Here, we show that an electrophoretically homogenous laccase preparation from the white rot fungus Trametes versicolor oxidized Mn2+ to Mn3+ in the presence of Na-pyrophosphate, with a Km value of 186 microM and a Vmax value of 0.11 micromol/min/mg protein at the optimal pH (5.0) and a Na-pyrophosphate concentration of 100 mM. The oxidation of Mn2+ involved concomitant reduction of the laccase type 1 copper site as usual for laccase reactions, thus providing the first evidence that laccase may directly utilize Mn2+ as a substrate.
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Affiliation(s)
- C Höfer
- Friedrich-Schiller-University of Jena, Institute of Microbiology, Germany
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Höfer C. [Pediatrician's practice--another field for pediatric nurses]. Kinderkrankenschwester 1994; 13:115-6. [PMID: 8193025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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