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Zittermann A, Zelzer S, Herrmann M, Gummert JF, Kleber M, Trummer C, Theiler-Schwetz V, Keppel MH, Maerz W, Pilz S. Determinants of circulating calcitriol in cardiovascular disease. J Steroid Biochem Mol Biol 2024; 241:106528. [PMID: 38677380 DOI: 10.1016/j.jsbmb.2024.106528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 03/28/2024] [Accepted: 04/23/2024] [Indexed: 04/29/2024]
Abstract
Circulating calcitriol may contribute to the risk of cardiovascular disease (CVD), but its regulation in patients with CVD is poorly characterized. We therefore aimed to assess determinants of circulating calcitriol in these patients. We analyzed 2183 independent samples from a large cohort of patients scheduled for coronary angiography and 1727 independent samples from different other cohorts from patients with a wide range of CVDs, including heart transplant candidates, to quantify the association of different parameters with circulating calcitriol. We performed univariable and multivariable linear regression analyses using the mathematical function that fitted best with circulating calcitriol. In the multivariable analysis of the large single cohort, nine parameters remained significant, explaining 30.0 % (32.4 % after exclusion of 22 potential outliers) of the variation in circulating calcitriol (r=0.548). Log-transformed 25-hydroxyvitamin D [25(OH)D] and log-transformed glomerular filtration rate were the strongest predictors, explaining 17.6 % and 6.6 %, respectively, of the variation in calcitriol. In the analysis of the combined other cohorts, including heart transplant candidates, the multivariable model explained a total of 42.6 % (46.1 % after exclusion of 21 potential outliers) of the variation in calcitriol (r=0.653) with log-transformed fibroblast growth factor-23 and log-transformed 25(OH)D explaining 29.0 % and 6.2 %, respectively. Circulating 25(OH)D was positively and FGF-23 inversely associated with circulating calcitriol. Although significant, PTH was only a weak predictor of calcitriol in both analyses (<2.5 %). In patients with CVD, FGF-23 and 25(OH)D are important independent determinants of circulating calcitriol. The relative importance of these two parameters may vary according to CVD severity. Future studies should focus on the clinical importance of regulating circulating calcitriol by different parameters.
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Affiliation(s)
- A Zittermann
- Clinic for Thoracic and Cardiovascular Surgery, Herz, und Diabeteszentrum NRW, Ruhr-University Bochum, Bad Oeynhausen, 32545, Germany.
| | - S Zelzer
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz 8036, Austria
| | - M Herrmann
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz 8036, Austria
| | - J F Gummert
- Clinic for Thoracic and Cardiovascular Surgery, Herz, und Diabeteszentrum NRW, Ruhr-University Bochum, Bad Oeynhausen, 32545, Germany
| | - M Kleber
- Vth Department of Medicine (Nephrology, Hypertensiology, Rheumatology, Endocrinology, Diabetology, Lipidology), Medical Faculty Mannheim, University of Heidelberg, Mannheim 68167, Germany; SYNLAB MVZ Humangenetik Mannheim, Mannheim 68163, Germany
| | - C Trummer
- Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz 8036, Austria
| | - V Theiler-Schwetz
- Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz 8036, Austria
| | - M H Keppel
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz 8036, Austria
| | - W Maerz
- Vth Department of Medicine (Nephrology, Hypertensiology, Rheumatology, Endocrinology, Diabetology, Lipidology), Medical Faculty Mannheim, University of Heidelberg, Mannheim 68167, Germany; SYNLAB MVZ Humangenetik Mannheim, Mannheim 68163, Germany; SYNLAB Holding, Deutschland GmbH, Mannheim, Augsburg 68159, Germany
| | - S Pilz
- Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz 8036, Austria
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Abstract
Recent research activities have provided new insights in vitamin D metabolism in various conditions. Furthermore, substantial progress has been made in the analysis of vitamin D metabolites and related biomarkers, such as vitamin D binding protein. Liquid chromatography tandem mass spectrometric (LC-MS/MS) methods are capable of accurately measuring multiple vitamin D metabolites in parallel. Nevertheless, only 25(OH)D and the biologically active form 1,25(OH)2D are routinely measured in clinical practice. While 25(OH)D remains the analyte of choice for the diagnosis of vitamin D deficiency, 1,25(OH)2D is only recommended in a few conditions with a dysregulated D metabolism. 24,25(OH)2D, free and bioavailable 25(OH)D, and the vitamin D metabolite ratio (VMR) have shown promising results, but technical pitfalls in their quantification, limited clinical data and the lack of reference values, impede their use in clinical practice. LC-MS/MS is the preferred method for the measurement of all vitamin D related analytes as it offers high sensitivity and specificity. In particular, 25(OH)D and 24,25(OH)2D can accurately be measured with this technology. When interpreted together, they seem to provide a functional measure of vitamin D metabolism beyond the analysis of 25(OH)D alone. The determination of VDBP, free and bioavailable 25(OH)D is compromised by unresolved analytical issues, lacking reference intervals and insufficient clinical data. Therefore, future research activities should focus on analytical standardization and exploration of their clinical value. This review provides an overview on established and new vitamin D related biomarkers including their pathophysiological role, preanalytical and analytical aspects, expected values, indications and influencing conditions.
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Affiliation(s)
- N Alonso
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - S Zelzer
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - G Eibinger
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - M Herrmann
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria.
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Haeusner S, Jauković A, Kupczyk E, Herrmann M. Review: cellularity in bone marrow autografts for bone and fracture healing. Am J Physiol Cell Physiol 2023; 324:C517-C531. [PMID: 36622067 DOI: 10.1152/ajpcell.00482.2022] [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] [Indexed: 01/10/2023]
Abstract
The use of autografts, as primary cell and tissue source, is the current gold standard approach to treat critical size bone defects and nonunion defects. The unique mixture of the autografts, containing bony compartments and bone marrow (BM), delivers promising results. Although BM mesenchymal stromal cells (BM-MSCs) still represent a major target for various healing approaches in current preclinical research and respective clinical trials, their occurrence in the human BM is typically low. In vitro expansion of this cell type is regulatory challenging as well as time and cost intensive. Compared with marginal percentages of resident BM-MSCs in BM, BM mononuclear cells (BM-MNCs) contained in BM aspirates, concentrates, and bone autografts represent a readily available abundant cell source, applicable within hours during surgical procedures without the need for time-consuming and regulatory challenging cell expansion. This benefit is one reason why autografting has become a clinical standard procedure. However, the exact anatomy and cellularity of BM-MNCs in humans, which is strongly correlated to their unique mode of action and wide application range remains to be elucidated. The aim of this review was to present an overview of the current knowledge on these specific cell types found in human BM, emphasize the contribution of BM-MNCs in bone healing, highlight donor site dependence, and discuss limitations in the current isolation and subsequent characterization procedures. Hereby, the most recent and relevant examples of human BM-MNC cell characterization, flow cytometric analyses, and findings are summarized, with a strong focus on bone therapy.
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Affiliation(s)
- S Haeusner
- IZKF Group Tissue Regeneration in Musculoskeletal Diseases, University Hospital of Wuerzburg, Wuerzburg, Germany.,Bernhard-Heine-Center for Locomotion Research, University of Wuerzburg, Wuerzburg, Germany
| | - A Jauković
- Group for Hematology and Stem Cells, Institute for Medical Research, University of Belgrade, Belgrade, Serbia
| | - E Kupczyk
- Department of Trauma, Hand, Plastic and Reconstructive Surgery, University Hospital of Wuerzburg, Wuerzburg, Germany
| | - M Herrmann
- IZKF Group Tissue Regeneration in Musculoskeletal Diseases, University Hospital of Wuerzburg, Wuerzburg, Germany.,Bernhard-Heine-Center for Locomotion Research, University of Wuerzburg, Wuerzburg, Germany
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Abstract
Vitamin K, a cofactor for the γ-glutamyl carboxylase enzyme, is required for the post-translational activation of osteocalcin and matrix Gla protein, which play a key role in bone and muscle homeostasis. In vivo and in vitro models for osteoporosis and sarcopenia suggest the vitamin K could exert a positive effect in both conditions. In bone, it increases osteoblastogenesis, whilst decreases osteoclast formation and function. In muscle, it is associated with increased satellite cell proliferation and migration and might play a role in energy metabolism. Observational trials suggest that high levels of vitamin K are associated with increased bone mineral density and reduced fracture risk. However, interventional studies for vitamin K supplementation yielded conflicting results. Clinical trials in sarcopenia suggest that vitamin K supplementation could improve muscle mass and function. One of the main limitations on the vitamin K studies are the technical challenges to measure its levels in serum. Thus, they are obtained from indirect sources like food questionnaires, or levels of undercarboxylated proteins, which can be affected by other environmental or biological processes. Although current research appoints to a beneficial effect of vitamin K in bone and muscle, further studies overcoming the current limitations are required in order to incorporate this supplementation in the clinical management of patients with osteosarcopenia.
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Affiliation(s)
- N Alonso
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - A Meinitzer
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - E Fritz-Petrin
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - D Enko
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria
| | - M Herrmann
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Graz, Austria.
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Trivanovic D, Harder J, Leucht M, Kreuzahler T, Schlierf B, Holzapfel BM, Rudert M, Jakob F, Herrmann M. Immune and stem cell compartments of acetabular and femoral bone marrow in hip osteoarthritis patients. Osteoarthritis Cartilage 2022; 30:1116-1129. [PMID: 35569800 DOI: 10.1016/j.joca.2022.05.001] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 03/22/2022] [Accepted: 05/02/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Hip osteoarthritis (OA) affects all components of the osteochondral unit, leading to bone marrow (BM) lesions, and unknown consequences on BM cell functionality. We analyzed the cellular composition in OA-affected acetabula compared to proximal femur shafts obtained of hip OA patients to reveal yet not explored immune and stem cell compartments. DESIGN Combining flow cytometry, cellular assays and transcription analyses, we performed extensive ex vivo phenotyping of acetabular BM cells from 18 hip OA patients, comparing them with their counterparts from patient-matched femoral shaft BM samples. Findings were related to differences in skeletal sites and age. RESULTS Acetabular BM had a greater frequency of T-lymphocytes, non-hematopoietic cells and colony-forming units fibroblastic potential than femoral BM. The incidence of acetabular CD45+CD3+ T-lymphocytes increased (95% CI: 0.1770 to 0.0.8416), while clonogenic hematopoietic progenitors declined (95% CI: -0.9023 to -0.2399) with age of patients. On the other side, in femoral BM, we observed higher B-lymphocyte, myeloid and erythroid cell frequencies. Acetabular mesenchymal stromal cells (MSCs) showed a senescent profile associated with the expression of survival and inflammation-related genes. Efficient osteogenic and chondrogenic differentiation was detected in acetabular MSCs, while adipogenesis was more pronounced in their femoral counterparts. CONCLUSION Our results suggest that distinctions in BM cellular compartments and MSCs may be due to the influence of the OA-stressed microenvironment, but also acetabular vs femoral shaft-specific peculiarities cannot be excluded. These results bring new knowledge on acetabular BM cell populations and may be addressed as novel pathogenic mechanisms and therapeutic targets in OA.
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Affiliation(s)
- D Trivanovic
- IZKF Group Tissue Regeneration in Musculoskeletal Diseases, University Hospital Wuerzburg, Wuerzburg, Bavaria, 97070, Germany; Bernhard-Heine-Center for Locomotion Research, University Wuerzburg, Wuerzburg, Bavaria, 97070, Germany
| | - J Harder
- Bernhard-Heine-Center for Locomotion Research, University Wuerzburg, Wuerzburg, Bavaria, 97070, Germany
| | - M Leucht
- Bernhard-Heine-Center for Locomotion Research, University Wuerzburg, Wuerzburg, Bavaria, 97070, Germany
| | - T Kreuzahler
- IZKF Group Tissue Regeneration in Musculoskeletal Diseases, University Hospital Wuerzburg, Wuerzburg, Bavaria, 97070, Germany; Bernhard-Heine-Center for Locomotion Research, University Wuerzburg, Wuerzburg, Bavaria, 97070, Germany
| | - B Schlierf
- IZKF Group Tissue Regeneration in Musculoskeletal Diseases, University Hospital Wuerzburg, Wuerzburg, Bavaria, 97070, Germany; Bernhard-Heine-Center for Locomotion Research, University Wuerzburg, Wuerzburg, Bavaria, 97070, Germany
| | - B M Holzapfel
- Bernhard-Heine-Center for Locomotion Research, University Wuerzburg, Wuerzburg, Bavaria, 97070, Germany; Department of Orthopaedic Surgery, König-Ludwig-Haus, University of Wuerzburg, Wuerzburg, Bavaria, 97070, Germany; Department of Orthopaedic Surgery, University Clinics, Ludwig-Maximilians University Munich, Munich, 81377, Germany
| | - M Rudert
- Bernhard-Heine-Center for Locomotion Research, University Wuerzburg, Wuerzburg, Bavaria, 97070, Germany; Department of Orthopaedic Surgery, König-Ludwig-Haus, University of Wuerzburg, Wuerzburg, Bavaria, 97070, Germany
| | - F Jakob
- Bernhard-Heine-Center for Locomotion Research, University Wuerzburg, Wuerzburg, Bavaria, 97070, Germany
| | - M Herrmann
- IZKF Group Tissue Regeneration in Musculoskeletal Diseases, University Hospital Wuerzburg, Wuerzburg, Bavaria, 97070, Germany; Bernhard-Heine-Center for Locomotion Research, University Wuerzburg, Wuerzburg, Bavaria, 97070, Germany.
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Trivanovic D, Horas K, Schlierf B, Rudert M, Herrmann M. P1414: MARROW ADIPOCYTE-ENRICHED NICHE HOSTS AND INFLUENCES A FRACTION OF HEMATOPOIETIC PROGENITORS IN ADULT HIP BONE. Hemasphere 2022. [PMCID: PMC9430597 DOI: 10.1097/01.hs9.0000848516.33377.2e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
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Hildebrand M, Herrmann M, Gieling F, Gehweiler D, Mischler D, Verrier S, Alini M, Zeiter S, Thompson K. Development and characterization of a predictive microCT-based non-union model in Fischer F344 rats. Arch Orthop Trauma Surg 2022; 142:579-590. [PMID: 33174612 DOI: 10.1007/s00402-020-03680-4] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Accepted: 10/28/2020] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Non-unions remain a clinical problem and are characterised by the failure to heal after a defined period of time. Current preclinical non-union models apply a wide variety of techniques to diminish intrinsic healing potential deviating from the clinical situation. The aim of this study was to develop and characterise a non-union model in rats using internal plate fixation without the need for additional healing insults, whereby bone healing can be longitudinally assessed using microCT. It was hypothesized that healing/non-unions can be accurately predicted at early time points by microCT. MATERIALS AND METHODS Female, skeletally mature Fischer F344 rats received a 2 mm or 1 mm femoral osteotomy, stabilized with either a 2 mm thick plate or a 1.25 mm thick plate. Healing was monitored by microCT over 14 weeks and histological analysis at euthanasia. The mechanical environment was characterised using finite element (FE) modelling and biomechanical testing. RESULTS The majority of animals receiving the 2 mm thick plate displayed poor healing responses in both the 2 mm and 1 mm defect size groups. Bone and cartilage formation were markedly improved using the 1.25 mm thick plate. MicroCT could accurately predict bone forming capacity at early time points (3-4 weeks). CONCLUSIONS The 2 mm thick plating system confers poor healing responses in female Fischer F344 rats, comparable to atrophic non-unions. By reducing plate thickness to increase interfragmentary strain within the defect site healing is improved, leading to borderline healing situations or increased abundance of cartilage tissue present in the defect site with ultimate failure to bridge the defect (hypertrophic non-union). Furthermore, microCT can reliably identify delayed/non-healing animals within 4 weeks, thereby allowing their selective targeting for the testing of novel, clinically relevant treatment strategies in different clinical situations aimed at restoring impaired bone healing.
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Affiliation(s)
- M Hildebrand
- AO Research Institute Davos, Clavadelerstrasse 8, 7270, Davos-Platz, Switzerland
| | - M Herrmann
- AO Research Institute Davos, Clavadelerstrasse 8, 7270, Davos-Platz, Switzerland.,IZKF Research Group Tissue Regeneration in Musculoskeletal Diseases, University Hospital Würzburg and Orthopedic Center for Musculoskeletal Research, University of Würzburg, Würzburg, Germany
| | - F Gieling
- AO Research Institute Davos, Clavadelerstrasse 8, 7270, Davos-Platz, Switzerland
| | - D Gehweiler
- AO Research Institute Davos, Clavadelerstrasse 8, 7270, Davos-Platz, Switzerland
| | - D Mischler
- AO Research Institute Davos, Clavadelerstrasse 8, 7270, Davos-Platz, Switzerland
| | - S Verrier
- AO Research Institute Davos, Clavadelerstrasse 8, 7270, Davos-Platz, Switzerland
| | - M Alini
- AO Research Institute Davos, Clavadelerstrasse 8, 7270, Davos-Platz, Switzerland
| | - S Zeiter
- AO Research Institute Davos, Clavadelerstrasse 8, 7270, Davos-Platz, Switzerland
| | - K Thompson
- AO Research Institute Davos, Clavadelerstrasse 8, 7270, Davos-Platz, Switzerland.
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Meusel M, Herrmann M, Machleidt F, Franzen K, Vonthein R, Sayk F. Intranasal oxytocin has sympathoexcitatory effects on vascular tone in healthy males. Am J Physiol Regul Integr Comp Physiol 2020; 320:R162-R172. [PMID: 33296278 DOI: 10.1152/ajpregu.00062.2020] [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] [Indexed: 01/05/2023]
Abstract
Oxytocin appears to be involved in the neuroendocrine regulation of sympathetic blood pressure (BP) homeostasis. In animals, intracerebral administration of oxytocin induces BP-relevant sympathetic activation. In humans, central nervous effects of oxytocin on BP regulation remain unclear. Intranasal administration supposedly delivers oligopeptides such as oxytocin directly to the brain. We investigated the effects of intranasal oxytocin on sympathetic vascular baroreflex function in humans using microneurographic techniques. In a balanced, double-blind crossover design, oxytocin or placebo was administered intranasally to 12 lean, healthy males (age 25 ± 4 yr). Muscle sympathetic nerve activity (MSNA) was assessed microneurographically before (presubstance), 30-45 min (postsubstance I), and 105-120 min (postsubstance II) after oxytocin administration. Baroreflex was challenged via graded infusions of vasoactive drugs, and correlation of BP with MSNA and heart rate (HR) defined baroreflex function. Experiments were conducted in the afternoon after a 5-h fasting period. After oxytocin, resting MSNA (burst rate and total activity) showed significant net increases from pre to postsubstance II compared with placebo [Δincrease = +4.3 ± 1.2 (oxytocin) vs. +2.2 ± 1.4 bursts/min (placebo), ANOVA; P < 0.05; total activity = 184 ± 11.5% (oxytocin) vs. 121 ± 14.3% (placebo), ANOVA; P = 0.01). This was combined with a small but significant net increase in resting diastolic BP, whereas systolic and mean arterial BP or HR as well as baroreflex sensitivity at vasoactive drug challenge were not altered. Intranasally administered oxytocin induced vasoconstrictory sympathoactivation in healthy male humans. The concomitant increase of diastolic BP was most likely attributable to increased vascular tone. This suggests oxytocin-mediated upward resetting of the vascular baroreflex set point at centers superordinate to the mere baroreflex-feedback loop.
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Affiliation(s)
- M Meusel
- Department of Internal Medicine II, University Heart Center Luebeck, University Hospital Schleswig-Holstein, Luebeck, Germany
| | - M Herrmann
- Department of Internal Medicine II, University Heart Center Luebeck, University Hospital Schleswig-Holstein, Luebeck, Germany
| | - F Machleidt
- Department of Internal Medicine I, University Hospital of Schleswig-Holstein, Luebeck, Germany
| | - K Franzen
- Department of Internal Medicine III, University Hospital of Schleswig-Holstein, Luebeck, Germany
| | - R Vonthein
- Institute for Medical Biometry and Statistics, University of Luebeck, Luebeck, Germany
| | - F Sayk
- Department of Internal Medicine I, University Hospital of Schleswig-Holstein, Luebeck, Germany
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Steines L, Poth H, Herrmann M, Schuster A, Banas B, Bergler T. B Cell Activating Factor (BAFF) Is Required for the Development of Intra-Renal Tertiary Lymphoid Organs in Experimental Kidney Transplantation in Rats. Int J Mol Sci 2020; 21:ijms21218045. [PMID: 33126753 PMCID: PMC7662293 DOI: 10.3390/ijms21218045] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 09/14/2020] [Revised: 10/23/2020] [Accepted: 10/25/2020] [Indexed: 12/22/2022] Open
Abstract
Intra-renal tertiary lymphoid organs (TLOs) are associated with worsened outcome in kidney transplantation (Ktx). We used an anti-BAFF (B cell activating factor) intervention to investigate whether BAFF is required for TLO formation in a full MHC-mismatch Ktx model in rats. Rats received either therapeutic immunosuppression (no rejection, NR) or subtherapeutic immunosuppression (chronic rejection, CR) and were sacrificed on d56. One group additionally received an anti-BAFF antibody (CR + AB). Intra-renal T (CD3+) and B (CD20+) cells, their proliferation (Ki67+), and IgG+ plasma cells were analyzed by immunofluorescence microscopy. Formation of T and B cell zones and TLOs was assessed. Intra-renal expression of TLO-promoting factors, molecules of T:B crosstalk, and B cell differentiation was analyzed by qPCR. Intra-renal B and T cell zones and TLOs were detected in CR and were associated with elevated intra-renal mRNA expression of TLO-promoting factors, including CXCL13, CCL19, lymphotoxin-β, and BAFF. Intra-renal plasma cells were also elevated in CR. Anti-BAFF treatment significantly decreased intra-renal B cell zones and TLO, as well as intra-renal B cell-derived TLO-promoting factors and B cell differentiation markers. We conclude that BAFF-dependent intra-renal B cells promote TLO formation and advance local adaptive alloimmune responses in chronic rejection.
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Affiliation(s)
- Louisa Steines
- Correspondence: ; Tel.: +49-941-9447301; Fax: +49-941-9447302
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Azizov V, Sokolova MV, Sarter K, Temchura V, Steffen (Née Harre) U, Herrmann M, Schett G, Zaiss M. OP0239 WHY DOES ALCOHOL INHIBIT ARTHRITIS? - AN EXPLANATION OF THE MECHANISM OF ARTHRITIS INHIBITION BY ETHANOL. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.4116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Alcohol consumption has emerged as consistent protective factor for the development of autoimmune diseases such as rheumatoid arthritis (RA). The underlying mechanism for this tolerance-inducing effect of alcohol, however, is unknown.Objectives:To understand the anti-arthritogenic effect of alcoholMethods:The immune-regulatory properties of alcohol consumption in vivo were tested in the collagen-induced arthritis (CIA) and serum-induced arthritis (SIA) model as well as after immunization with T cell- dependent (NP-CGG) and independent (TNP-FICOLL) antigens. Additional experiments in vivo experiments in these models were done with acetate- the metabolite of ethanol. The models were analysed for T- cell lineage and plasma cell differentiation, germinal centre formation and IgG levels and sialylation. Molecular expression of T follicular helper cell (TFH) activation such as IL-21, Bcl-6 and PD-1, as well as TFH: B cell conjugates were also assessed. Furthermore, TFH cells were generated in vitro, exposed to ethanol or acetate and tested for IL-21 production, PD1 expression and conjugate formation with B cells.Results:Ethanol exposure significantly inhibited arthritis in the active adaptive immunity-driven model of arthritis (CIA) but not in the passive innate immunity-driven model (STA) suggesting that the immune suppressive effect of alcohol is based on interference of T- and B- cell activation. In line ethanol and even more its metabolite acetate, suppressed T cell dependent antibody formation after NP-CGG immunization, while T cell independent antibody formation after TNP-FICOLL immunization was not suppressed. Ethanol, as well as its metabolite acetate, specifically altered the functional state of T follicular helper (TFH) cells in vitro and in vivo, thereby exerting immune regulatory and tolerance-inducing properties. Alcohol-exposed mice showed reduced Bcl6 and PD-1 expression as well as interleukin (IL)-21 production by TFH cells, preventing proper spatial organization of TFH cells to form TFH: B cell conjugates in the germinal centre. This effect of alcohol on TFHcells was associated with impaired autoantibody formation, higher sialylation of autoantibodies and less arthritis. In accordance, overexpression of IL-21 in vivo completely reversed the immune regulatory effects of alcohol.Conclusion:In summary, these data provide a new mechanistic explanation for the immune regulatory and tolerance-inducing effect of alcohol consumption in arthritis.Acknowledgments:Funden by DFG-FOR2886, DFG–CRC1181, Staedtler foundation, Johannes und Frieda Marohn-Stiftung, Else Kröner-Fresenius foundation, Interdisciplinary Centre for Clinical Research, Erlangen, BMBF-MASCARA, IMI funded project RTCure.Disclosure of Interests:Vugar Azizov: None declared, Maria V Sokolova: None declared, Kerstin Sarter: None declared, Vladimir Temchura: None declared, Ulrike Steffen (née Harre): None declared, Martin Herrmann: None declared, Georg Schett Speakers bureau: AbbVie, BMS, Celgene, Janssen, Eli Lilly, Novartis, Roche and UCB, Mario Zaiss: None declared
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Summ O, Schute J, Byhahn C, Kahle T, Herrmann M, Schulte C, Bergold MN, Groß M. [COVID-19 pandemic: structured expansion of ventilation capacities using home respirators]. Anaesthesist 2020; 69:323-330. [PMID: 32350543 PMCID: PMC7189831 DOI: 10.1007/s00101-020-00780-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Due to the current COVID-19 pandemic there is a need for a rapid increase in intensive care and ventilation capacities. Delivery times for additional intensive care respirators are currently not foreseeable. An option to increase ventilation capacities not only for COVID-19, but for all patients requiring mechanical ventilation is to use home respirators. Home respirators are turbine respirators, so they can usually be operated without high-pressure oxygen connections and can therefore also be used in areas outside the classical intensive care medical infrastructure. Due to their limited technical features, home respirators are not suitable for the treatment of severely affected patients but can be used for weaning after respiratory improvement, which means that intensive care respirators are available again more quickly. Respiratory therapists are specially trained nurses or therapists in the field of out of hospital ventilation and can independently use home ventilation respirators, for example for weaning in the intensive care unit. Thus, they relieve intensive care nursing staff in the pandemic. Due to the COVID-19 pandemic medical students from the Oldenburg University are currently being trained in operating home respirators to provide basic support in the hospital if necessary.
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Affiliation(s)
- O Summ
- Klinik für Neurologische Intensivmedizin und Frührehabilitation, Evangelisches Krankenhaus, Medizinischer Campus Universität Oldenburg, Steinweg 13-17, 26122, Oldenburg, Deutschland
| | - J Schute
- Therapiezentrum, Evangelisches Krankenhaus, Medizinischer Campus Universität Oldenburg, Oldenburg, Deutschland
| | - C Byhahn
- Klinik für Anästhesiologie, Intensivmedizin und Schmerztherapie, Evangelisches Krankenhaus, Medizinischer Campus Universität Oldenburg, Oldenburg, Deutschland
| | - T Kahle
- Therapiezentrum, Evangelisches Krankenhaus, Medizinischer Campus Universität Oldenburg, Oldenburg, Deutschland
| | - M Herrmann
- Therapiezentrum, Evangelisches Krankenhaus, Medizinischer Campus Universität Oldenburg, Oldenburg, Deutschland
| | - C Schulte
- Therapiezentrum, Evangelisches Krankenhaus, Medizinischer Campus Universität Oldenburg, Oldenburg, Deutschland
| | - M N Bergold
- Klinik für Anästhesiologie, Intensivmedizin und Schmerztherapie, Evangelisches Krankenhaus, Medizinischer Campus Universität Oldenburg, Oldenburg, Deutschland
| | - M Groß
- Klinik für Neurologische Intensivmedizin und Frührehabilitation, Evangelisches Krankenhaus, Medizinischer Campus Universität Oldenburg, Steinweg 13-17, 26122, Oldenburg, Deutschland.
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Herrmann M, Geesink P, Yan L, Lehmann R, Totsche KU, Küsel K. Complex food webs coincide with high genetic potential for chemolithoautotrophy in fractured bedrock groundwater. Water Res 2020; 170:115306. [PMID: 31770650 DOI: 10.1016/j.watres.2019.115306] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 07/11/2019] [Revised: 10/14/2019] [Accepted: 11/12/2019] [Indexed: 06/10/2023]
Abstract
Groundwater ecosystems face the challenge of energy limitation due to the absence of light-driven primary production. Lack of space and low oxygen availability might further contribute to generally assumed low food web complexity. Chemolithoautotrophy provides additional input of carbon within the subsurface, however, we still do not understand how abundances of chemolithoautotrophs, differences in surface carbon input, and oxygen availability control subsurface food web complexity. Using a molecular approach, we aimed to disentangle the different levels of potential trophic interactions in oligotrophic groundwater along a hillslope setting of alternating mixed carbonate-/siliciclastic bedrock with contrasting hydrochemical conditions and hotspots of chemolithoautotrophy. Across all sites, groundwater harbored diverse protist communities including Ciliophora, Cercozoa, Centroheliozoa, and Amoebozoa but correlations with hydrochemical parameters were less pronounced for eukaryotes compared to bacteria. Ciliophora-affiliated reads dominated the eukaryotic data sets across all sites. DNA-based evidence for the presence of metazoan top predators such as Cyclopoida (Arthropoda) and Stenostomidae (Platyhelminthes) was only found at wells where abundances of functional genes associated with chemolithoautotrophy were 10-100 times higher compared to wells without indications of these top predators. At wells closer to recharge areas with presumably increased inputs of soil-derived substances and biota, fungi accounted for up to 85% of the metazoan-curated eukaryotic sequence data, together with a low potential for chemolithoautotrophy. Although we did not directly observe higher organisms, our results point to the existence of complex food webs with several trophic levels in oligotrophic groundwater. Chemolithoautotrophy appears to provide strong support to more complex trophic interactions, feeding in additional biomass produced by light-independent CO2-fixation.
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Affiliation(s)
- M Herrmann
- Friedrich Schiller University Jena, Institute of Biodiversity, Aquatic Geomicrobiology, Dornburger Strasse 159, D-07743, Jena, Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, D-04103, Leipzig, Germany
| | - P Geesink
- Friedrich Schiller University Jena, Institute of Biodiversity, Aquatic Geomicrobiology, Dornburger Strasse 159, D-07743, Jena, Germany
| | - L Yan
- Friedrich Schiller University Jena, Institute of Biodiversity, Aquatic Geomicrobiology, Dornburger Strasse 159, D-07743, Jena, Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, D-04103, Leipzig, Germany
| | - R Lehmann
- Friedrich Schiller University Jena, Institute of Geosciences, Chair of Hydrogeology, Burgweg 11, D-07749, Jena, Germany
| | - K U Totsche
- Friedrich Schiller University Jena, Institute of Geosciences, Chair of Hydrogeology, Burgweg 11, D-07749, Jena, Germany
| | - K Küsel
- Friedrich Schiller University Jena, Institute of Biodiversity, Aquatic Geomicrobiology, Dornburger Strasse 159, D-07743, Jena, Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, D-04103, Leipzig, Germany.
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13
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Gloy K, Herrmann M, Fehr T. Decision making under uncertainty in a quasi realistic binary decision task - An fMRI study. Brain Cogn 2020; 140:105549. [PMID: 32088499 DOI: 10.1016/j.bandc.2020.105549] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 12/20/2019] [Accepted: 02/12/2020] [Indexed: 12/15/2022]
Abstract
Approaching real life decision making through Quasi Realistic Decision Making may increase the ecological validity of decision making experiments. This could help narrow the gap between laboratory settings and observations in real world contexts and thus allow for generalization of laboratory results to everyday life. A binary decision task with quasi realistic context and stimuli was created to investigate neural processing of certain and uncertain decision making, using functional Magnetic Resonance Imaging. On the basis of behavioral data (consistency of decisions in identical contexts), trials with uncertain and certain decision making were identified. This allowed for comparing uncertain and certain conditions, and contrasting each condition with a low level baseline (i.e., between trial fixation dot). A Conjunction analysis between contrasts of uncertainty versus baseline and certainty versus baseline indicated a large overlap of neural network recruitment distributed in bilateral middle frontal, medial frontal, inferior parietal, occipito-temporal, and medio-temporal areas, and the cingulate cortex. While basic neural processing principles in uncertain and certain contexts were comparable, the direct contrast revealed activation foci in middle cingulate and in frontal and parietal areas. The quasi realistic approach revealed a common network for decision making which is modulated by uncertainty.
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Affiliation(s)
- K Gloy
- University of Bremen, Department of Neuropsychology and Behavioral Neurobiology, Hochschulring 18, 28359 Bremen, Germany; University of Bremen, Center for Cognitive Sciences, Germany.
| | - M Herrmann
- University of Bremen, Department of Neuropsychology and Behavioral Neurobiology, Hochschulring 18, 28359 Bremen, Germany; University of Bremen, Center for Cognitive Sciences, Germany
| | - T Fehr
- University of Bremen, Department of Neuropsychology and Behavioral Neurobiology, Hochschulring 18, 28359 Bremen, Germany; University of Bremen, Center for Cognitive Sciences, Germany
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Kampmeier S, Rennebaum F, Schmidt H, Riegel A, Herrmann M, Schaumburg F. Peripancreatic abscess supported by Bordetella hinzii. New Microbes New Infect 2020; 34:100650. [PMID: 32025312 PMCID: PMC6997295 DOI: 10.1016/j.nmni.2020.100650] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 10/28/2019] [Revised: 12/30/2019] [Accepted: 01/03/2020] [Indexed: 11/18/2022] Open
Abstract
We report a novel case of an infection with Bordetella hinzii, a pathogen usually detected in poultry, supporting a peripancreatic abscess formation as a complication of an acute necrotizing pancreatitis.
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Affiliation(s)
- S. Kampmeier
- Institute of Hygiene, University Hospital Münster, Germany
- Institute of Medical Microbiology, University Hospital Münster, Germany
- Corresponding author: S. Kampmeier, Institute of Hygiene, University Hospital Münster, Robert-Koch-Strasse 41, 48149, Münster, Germany.
| | - F. Rennebaum
- Department of Gastroenterology and Hepatology, University Hospital Münster, Germany
| | - H. Schmidt
- Department of Gastroenterology and Hepatology, University Hospital Münster, Germany
| | - A. Riegel
- Department of Clinical Radiology, University of Münster, Münster, Germany
| | - M. Herrmann
- Institute of Medical Microbiology, University Hospital Münster, Germany
- Section of Medical and Geographical Infectiology, University Hospital Münster, Germany
| | - F. Schaumburg
- Institute of Medical Microbiology, University Hospital Münster, Germany
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15
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Barros MRF, Chagas RA, Herrmann M, Bezerra AM. New record of the invasive snail Melanoides tuberculata (Gastropoda, Thiaridae) - Ceará State, Brazil. BRAZ J BIOL 2019; 80:368-372. [PMID: 31508657 DOI: 10.1590/1519-6984.210408] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 01/11/2019] [Indexed: 11/21/2022] Open
Abstract
Melanoides tuberculata is a freshwater gastropod native to Africa and Asia, and currently presents distributed worldwide. The first record of Melanoides tuberculata in South America occurred in Brazil, in the city of Santos, state of São Paulo, in 1967. Therefore, the objective of the present study is to report the occurrence of Melanoides tuberculata for Banana Lagoon and to characterize the current population situation. The gastropods were collected through direct visualization of shells, morphometric measurements of Melanoides tuberculata shells were determined using a digital caliper. After identifying the gastropod and its first distribution in the area, a preliminary descriptive analysis of the population was carried out. The gastropods were classified by grouping the individuals into four classes according to the shell width (mm). This is the first record of the occurrence of Melanoides tuberculata, in Banana Lagoon, Caucaia municipality, Ceará state, Northeast Brazil, being the largest specimen cited in the literature (33.77 mm) and 92.65% of the gastropods present in sizes above the first reproduction stages.
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Affiliation(s)
- M R F Barros
- Programa de Pós-graduação em Aquicultura e Recursos Aquáticos Tropicais, Instituto Socioambiental e dos Recursos Hídricos - ISARH, Universidade Federal Rural da Amazônia - UFRA, Av. Presidente Tancredo Neves, 2501, Montese, CP 917, CEP 66077-530, Belém, PA, Brasil
| | - R A Chagas
- Programa de Pós-graduação em Aquicultura e Recursos Aquáticos Tropicais, Instituto Socioambiental e dos Recursos Hídricos - ISARH, Universidade Federal Rural da Amazônia - UFRA, Av. Presidente Tancredo Neves, 2501, Montese, CP 917, CEP 66077-530, Belém, PA, Brasil
| | - M Herrmann
- Programa de Pós-graduação em Aquicultura e Recursos Aquáticos Tropicais, Instituto Socioambiental e dos Recursos Hídricos - ISARH, Universidade Federal Rural da Amazônia - UFRA, Av. Presidente Tancredo Neves, 2501, Montese, CP 917, CEP 66077-530, Belém, PA, Brasil
| | - A M Bezerra
- Programa de Pós-graduação em Saúde e Produção Animal na Amazônia, Universidade Federal Rural da Amazônia - UFRA, Av. Presidente Tancredo Neves, 2501, Montese, CP 917, CEP 66077-530, Belém, PA, Brasil
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Le Goff C, Zelzer S, Huyghebaert L, Segura JF, Fabregat-Cabello N, Herrmann M, Cavalier E. Method comparison of the 24,25(OH)2D3 measurement with two different LC-MS/MS assays. Clin Chim Acta 2019. [DOI: 10.1016/j.cca.2019.03.715] [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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17
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Herrmann M, Simons B, Horst A, Boehme S, Straube T, Polak T. Transcranial direct current stimulation (tDCS) of the right inferior frontal cortex (rIFC) attenuates sustained fear. Brain Stimul 2019. [DOI: 10.1016/j.brs.2018.12.400] [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: 10/27/2022] Open
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Abstract
Mesenchymal stem/stromal cells (MSCs) are an essential element of most modern tissue engineering and regenerative medicine approaches due to their multipotency and immunoregulatory functions. Despite the prospective value of MSCs for the clinics, the stem cells community is questioning their developmental origin, in vivo localization, identification, and regenerative potential after several years of far-reaching research in the field. Although several major progresses have been made in mimicking the complexity of the MSC niche in vitro, there is need for comprehensive studies of fundamental mechanisms triggered by microenvironmental cues before moving to regenerative medicine cell therapy applications. The present comprehensive review extensively discusses the microenvironmental cues that influence MSC phenotype and function in health and disease - including cellular, chemical and physical interactions. The most recent and relevant illustrative examples of novel bioengineering approaches to mimic biological, chemical, and mechanical microenvironmental signals present in the native MSC niche are summarized, with special emphasis on the forefront techniques to achieve bio-chemical complexity and dynamic cultures. In particular, the skeletal MSC niche and applications focusing on the bone regenerative potential of MSC are addressed. The aim of the review was to recognize the limitations of the current MSC niche in vitro models and to identify potential opportunities to fill the bridge between fundamental science and clinical application of MSCs.
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Affiliation(s)
| | | | - M Herrmann
- IZKF Group Tissue Regeneration in Musculoskeletal Diseases, Orthopedic Center for Musculoskeletal Research, Würzburg,
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Harraghy N, Seiler S, Jacobs K, Hannig M, Menger MD, Herrmann M. Advances in in Vitro and in Vivo Models for Studying the Staphylococcal Factors Involved in Implant Infections. Int J Artif Organs 2018; 29:368-78. [PMID: 16705605 DOI: 10.1177/039139880602900406] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Implant infections due to staphylococci are one of the greatest threats facing patients receiving implant devices. For many years researchers have sought to understand the mechanisms involved in the adherence of the bacterium to the implanted device and the formation of the unique structure, the biofilm, which protects the indwelling bacteria from the host defence and renders them resistant to antibiotic treatment. A major goal has been to develop in vitro and in vivo models that adequately reflect the real-life situation. From the simple microtiter plate assay and scanning electron microscopy, tools for studying adherence and biofilm formation have since evolved to include specialised equipment for studying adherence, flow cell systems, real-time analysis of biofilm formation using reporter gene assays both in vitro and in vivo, and a wide variety of animal models. In this article, we discuss advances in the last few years in selected in vitro and in vivo models as well as future developments in the study of adherence and biofilm formation by the staphylococci.
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Affiliation(s)
- N Harraghy
- Institute of Medical Microbiology and Hygiene, University of Saarland, Homburg/Saar, Germany.
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Hawryluk R, Barnes CW, Batha S, Beer M, Bell M, Bell R, Berk H, Bitter M, Bretz N, Budny R, Bush C, Cauffman S, Chang CS, Chang Z, Cheng C, Darrow D, Dendy R, Dorland W, Dudek L, Duong H, Durst R, Efthimion P, Evenson H, Fisch N, Fisher R, Fonck R, Forrest C, Fredrickson E, Fu G, Furth H, Gorelenkov N, Grek B, Grisham L, Hammett G, Heidbrink W, Herrmann H, Herrmann M, Hill K, Hooper B, Hosea J, Houlberg W, Hughes M, Jassby D, Jobes F, Johnson D, Kaita R, Kamperschroer J, Kesner J, Krazilniknov A, Kugel H, Kumar A, LaMarche P, LeBlanc B, Levine J, Levinton F, Lin Z, Machuzak J, Majeski R, Mansfield D, Mazzucato E, Mauel M, McChesney J, McGuire K, McKee G, Meade D, Medley S, Mikkelsen D, Mimov S, Mueller D, Navratil G, Nazikian R, Nevins B, Okabayashi M, Osakabe M, Owens D, Park H, Park W, Paul S, Petrov M, Phillips C, Phillips M, Phillips P, Ramsey A, Redi M, Rewoldt G, Rice B, Rogers J, Roquemore A, Ruskov E, Sabbagh S, Sasao M, Schilling G, Schmidt G, Scott S, Semenov I, Skinner C, Spong D, Strachan J, Strait E, Stratton B, Synakowski E, Takahashi H, Tang W, Taylor G, Goeler SV, Halle AV, White R, Williams M, Wilson J, Wong K, Wurden G, Young K, Zarnstorff M, Zweben S. Review of D-T Results from TFTR. ACTA ACUST UNITED AC 2018. [DOI: 10.13182/fst96-a11963011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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21
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Herrmann M, Opitz S, Harzer R, Totsche KU, Küsel K. Attached and Suspended Denitrifier Communities in Pristine Limestone Aquifers Harbor High Fractions of Potential Autotrophs Oxidizing Reduced Iron and Sulfur Compounds. Microb Ecol 2017; 74:264-277. [PMID: 28214969 DOI: 10.1007/s00248-017-0950-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [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: 09/30/2016] [Accepted: 02/09/2017] [Indexed: 06/06/2023]
Abstract
Oxygen and nitrate availability as well as the presence of suitable organic or inorganic electron donors are strong drivers of denitrification; however, the factors influencing denitrifier abundance and community composition in pristine aquifers are not well understood. We explored the denitrifier community structure of suspended and attached groundwater microorganisms in two superimposed limestone aquifer assemblages with contrasting oxygen regime in the Hainich Critical Zone Exploratory (Germany). Attached communities were retrieved from freshly crushed parent rock material which had been exposed for colonization in two groundwater wells (12.7 and 48 m depth). Quantitative PCR and amplicon pyrosequencing of nirK and nirS genes encoding copper-containing or cytochrome cd1 heme-type nitrite reductase, respectively, and of bacterial 16S ribosomal RNA genes showed a numerical predominance of nirS-type denitrifiers in both attached and suspended groundwater communities and a dominance of nirS-type denitrifiers closely related to the autotrophic thiosulfate- and hydrogen-oxidizing Sulfuritalea hydrogenivorans and the iron- and sulfide-oxidizing Sideroxydans lithotrophicus ES-1. Potential rates of nitrate reduction in association with exposed crushed rock material were higher with an inorganic electron donor (thiosulfate) compared to an organic electron donor (fumarate/acetate) in the upper aquifer assemblage but similar in the lower, oxic aquifer. Our results have clearly demonstrated that groundwater from pristine limestone aquifers harbors diverse denitrifier communities which appear to selectively attach to rock surfaces and harbor a high potential for nitrate reduction. Our findings suggest that the availability of suitable inorganic versus organic electron donors rather than oxygen availability shapes denitrifier communities and their potential activity in these limestone aquifers.
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Affiliation(s)
- M Herrmann
- Aquatic Geomicrobiology, Institute of Ecology, Friedrich Schiller University Jena, Dornburger Strasse 159, 07743, Jena, Germany.
- German Center for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103, Leipzig, Germany.
| | - S Opitz
- Aquatic Geomicrobiology, Institute of Ecology, Friedrich Schiller University Jena, Dornburger Strasse 159, 07743, Jena, Germany
| | - R Harzer
- Aquatic Geomicrobiology, Institute of Ecology, Friedrich Schiller University Jena, Dornburger Strasse 159, 07743, Jena, Germany
| | - K U Totsche
- Institute of Geosciences, Friedrich Schiller University Jena, Burgweg 11, 07749, Jena, Germany
| | - K Küsel
- Aquatic Geomicrobiology, Institute of Ecology, Friedrich Schiller University Jena, Dornburger Strasse 159, 07743, Jena, Germany
- German Center for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103, Leipzig, Germany
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22
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Stümer J, Biermann MHC, Knopf J, Magorivska I, Kastbom A, Svärd A, Janko C, Bilyy R, Schett G, Sjöwall C, Herrmann M, Muñoz LE. Altered glycan accessibility on native immunoglobulin G complexes in early rheumatoid arthritis and its changes during therapy. Clin Exp Immunol 2017; 189:372-382. [PMID: 28509333 DOI: 10.1111/cei.12987] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/09/2017] [Indexed: 12/31/2022] Open
Abstract
The goal of this study was to investigate the glycosylation profile of native immunoglobulin (Ig)G present in serum immune complexes in patients with rheumatoid arthritis (RA). To accomplish this, lectin binding assays, detecting the accessibility of glycans present on IgG-containing immune complexes by biotinylated lectins, were employed. Lectins capturing fucosyl residues (AAL), fucosylated tri-mannose N-glycan core sites (LCA), terminal sialic acid residues (SNA) and O-glycosidically linked galactose/N-acetylgalactosamine (GalNac-L) were used. Patients with recent-onset RA at baseline and after 3-year follow-up were investigated. We found that native IgG was complexed significantly more often with IgM, C1q, C3c and C-reactive protein (CRP) in RA patients, suggesting alterations of the native structure of IgG. The total accessibility of fucose residues on captured immune complexes to the respective lectin was significantly higher in patients with RA. Moreover, fucose accessibility on IgG-containing immune complexes correlated positively with the levels of antibodies to cyclic citrullinated peptides (anti-CCP). We also observed a significantly higher accessibility to sialic acid residues and galactose/GalNAc glyco-epitopes in native complexed IgG of patients with RA at baseline. While sialic acid accessibility increased during treatment, the accessibility of galactose/GalNAc decreased. Hence, successful treatment of RA was associated with an increase in the SNA/GalNAc-L ratio. Interestingly, the SNA/GalNAc-L ratio in particular rises after glucocorticoid treatment. In summary, this study shows the exposure of glycans in native complexed IgG of patients with early RA, revealing particular glycosylation patterns and its changes following pharmaceutical treatment.
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Affiliation(s)
- J Stümer
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Rheumatology and Immunology, Universitätsklinikum Erlangen, Erlangen, Germany
| | - M H C Biermann
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Rheumatology and Immunology, Universitätsklinikum Erlangen, Erlangen, Germany
| | - J Knopf
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Rheumatology and Immunology, Universitätsklinikum Erlangen, Erlangen, Germany
| | - I Magorivska
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Rheumatology and Immunology, Universitätsklinikum Erlangen, Erlangen, Germany.,Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - A Kastbom
- Rheumatology/Division of Neuro and Inflammation Sciences, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - A Svärd
- Rheumatology Clinic, Falun Hospital, Falun, Sweden
| | - C Janko
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Rheumatology and Immunology, Universitätsklinikum Erlangen, Erlangen, Germany.,Department of Otorhinolaryngology, Head and Neck Surgery, Section of Experimental Oncology and Nanomedicine (SEON), University Hospital Erlangen, Erlangen, Germany
| | - R Bilyy
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Rheumatology and Immunology, Universitätsklinikum Erlangen, Erlangen, Germany.,Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - G Schett
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Rheumatology and Immunology, Universitätsklinikum Erlangen, Erlangen, Germany
| | - C Sjöwall
- Rheumatology/Division of Neuro and Inflammation Sciences, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - M Herrmann
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Rheumatology and Immunology, Universitätsklinikum Erlangen, Erlangen, Germany
| | - L E Muñoz
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3, Rheumatology and Immunology, Universitätsklinikum Erlangen, Erlangen, Germany
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Zink A, Herrmann M, Fischer T, Lauffer F, Garzorz-Stark N, Böhner A, Spinner CD, Biedermann T, Eyerich K. Addiction: an underestimated problem in psoriasis health care. J Eur Acad Dermatol Venereol 2017; 31:1308-1315. [PMID: 28281329 DOI: 10.1111/jdv.14204] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Accepted: 01/16/2017] [Indexed: 12/13/2022]
Abstract
BACKGROUND Psoriasis is a disease of enormous socio-economic impact. Despite approval of numerous highly efficient and costly therapies, a minor proportion of severely affected patients actually receives sufficient treatment. OBJECTIVE To investigate whether addictions are associated with psoriasis and to develop evidence-based recommendations for dermatologists in their daily clinical practice in order to improve medical assessment of psoriasis and patients' quality of life. PATIENTS AND METHODS Psoriasis patients at the University Department of Dermatology were asked to fill out a paper-based self-reported anonymous questionnaire with 92 questions of validated screening tests for the six most common addictions in Germany (alcohol, nicotine, drugs and illegal drugs, gambling, food). Body weight and height as well as current Psoriasis Area and Severity Index (PASI) were documented as well. RESULTS Between October 2015 and February 2016, 102 patients (65 males, 37 females; mean age 49.7 years (SD 13.4), range 18-83 years) participated in the study. Fifty-seven of the 102 patients showed addictive behaviour. Of these, 23.8% were high-risk drinkers, 41% regular smokers, 11% at risk of drug abuse, 4.1% at risk of food dependency and 19% compulsive gamblers. Compared with the general population, these results are significantly higher for alcohol abuse (P < 0.005), nicotine (P < 0.001) and gambling (P < 0.001). Body mass index was significantly higher in the study population (P < 0.001). CONCLUSION Addictions and gambling are more prevalent in patients with psoriasis compared with the general population. Respective screening measures are recommended in daily practice for doctors treating psoriasis patients, and PeakPASI is suggested as a score to document patients' lifetime highest PASI. Parallel to new drug approvals and even more detailed insights into the pathomechanism of psoriasis, public health strategies and interdisciplinary approaches are essential for a general sustained psoriasis treatment.
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Affiliation(s)
- A Zink
- Department of Dermatology and Allergy, University Hospital Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - M Herrmann
- Department of Dermatology and Allergy, University Hospital Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - T Fischer
- Department of Dermatology and Allergy, University Hospital Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - F Lauffer
- Department of Dermatology and Allergy, University Hospital Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - N Garzorz-Stark
- Department of Dermatology and Allergy, University Hospital Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - A Böhner
- Department of Dermatology and Allergy, University Hospital Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - C D Spinner
- Department of Medicine II, University Hospital Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - T Biedermann
- Department of Dermatology and Allergy, University Hospital Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - K Eyerich
- Department of Dermatology and Allergy, University Hospital Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
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Biermann MHC, Griffante G, Podolska MJ, Boeltz S, Stürmer J, Muñoz LE, Bilyy R, Herrmann M. Sweet but dangerous - the role of immunoglobulin G glycosylation in autoimmunity and inflammation. Lupus 2017; 25:934-42. [PMID: 27252272 DOI: 10.1177/0961203316640368] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [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: 01/22/2023]
Abstract
Glycosylation is well-known to modulate the functional capabilities of immunoglobulin G (IgG)-mediated cellular and humoral responses. Indeed, highly sialylated and desialylated IgG is endowed with anti- and pro-inflammatory activities, respectively, whereas fully deglycosylated IgG is a rather lame duck, with no effector function besides toxin neutralization. Recently, several studies revealed the impact of different glycosylation patterns on the Fc part and Fab fragment of IgG in several autoimmune diseases, including systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA). Here, we provide a synoptic update summarizing the most important aspects of antibody glycosylation, and the current progress in this field. We also discuss the therapeutic options generated by the modification of the glycosylation of IgG in a potential treatment for chronic inflammatory diseases.
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Affiliation(s)
- M H C Biermann
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3 - Rheumatology and Immunology, Universitätsklinikum Erlangen, Erlangen, Germany
| | - G Griffante
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3 - Rheumatology and Immunology, Universitätsklinikum Erlangen, Erlangen, Germany
| | - M J Podolska
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3 - Rheumatology and Immunology, Universitätsklinikum Erlangen, Erlangen, Germany
| | - S Boeltz
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3 - Rheumatology and Immunology, Universitätsklinikum Erlangen, Erlangen, Germany
| | - J Stürmer
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3 - Rheumatology and Immunology, Universitätsklinikum Erlangen, Erlangen, Germany
| | - L E Muñoz
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3 - Rheumatology and Immunology, Universitätsklinikum Erlangen, Erlangen, Germany
| | - R Bilyy
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3 - Rheumatology and Immunology, Universitätsklinikum Erlangen, Erlangen, Germany Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - M Herrmann
- Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3 - Rheumatology and Immunology, Universitätsklinikum Erlangen, Erlangen, Germany
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25
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Trudzinski F, Schlotthauer U, Kamp A, Hennemann K, Gärtner B, Wilkens H, Bals R, Herrmann M, Lepper PM, Becker SL. Die klinische Relevanz des Nachweises von Mycobacterium Chimaera in Themperaturregulierungsgeräten für die extrakorporale Membranoxygenierung. Pneumologie 2017. [DOI: 10.1055/s-0037-1598431] [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)
- F Trudzinski
- Innere Medizin V, Pneumologie, Allergologie, Beatmungs- und Umweltmedizin, Universitätsklinikum des Saarlandes
| | - U Schlotthauer
- Institut für Medizinische Mikrobiologie und Hygiene am Universitätsklinikum des Saarlandes
| | - A Kamp
- Innere Medizin V, Pneumologie, Allergologie, Beatmungs- und Umweltmedizin, Universitätsklinikum des Saarlandes
| | - K Hennemann
- Klinik für Thorax- und Herz-Gefäßchirurgie am Universitätsklinikum des Saarlandes
| | - B Gärtner
- Institut für Medizinische Mikrobiologie und Hygiene am Universitätsklinikum des Saarlandes
| | - H Wilkens
- Innere Medizin V, Pneumologie, Allergologie, Beatmungs- und Umweltmedizin, Universitätsklinikum des Saarlandes
| | - R Bals
- Innere Medizin V, Pneumologie, Allergologie, Beatmungs- und Umweltmedizin, Universitätsklinikum des Saarlandes
| | - M Herrmann
- Institut für Medizinische Mikrobiologie und Hygiene am Universitätsklinikum des Saarlandes
| | - PM Lepper
- Innere Medizin V, Pneumologie, Allergologie, Beatmungs- und Umweltmedizin, Universitätsklinikum des Saarlandes
| | - SL Becker
- Institut für Medizinische Mikrobiologie und Hygiene am Universitätsklinikum des Saarlandes
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26
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Zink A, Herrmann M, Fischer T, Böhner A, Lauffer F, Garzorz-Stark N, Biedermann T, Eyerich K. 045 Psoriasis and addictions: a neglected challenge. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.06.062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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27
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Herrmann M, Meisel P, Lippmann W, Hurtado A. Joining technology—A challenge for the use of SiC components in HTRs. Nuclear Engineering and Design 2016. [DOI: 10.1016/j.nucengdes.2015.12.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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28
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29
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Schneider H, Brock M, Herrmann M, Wolf K. CFC-Free Hot-Curing Moulded Flexible Foam for Automotive Seating. J CELL PLAST 2016. [DOI: 10.1177/0021955x9202800303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- H.G. Schneider
- Bayer AG, PU-Anwendungstechnik, Technische Stellungnahme, 5090 Leverkusen, Bayerwerk, Federal Republic of Germany
| | - M. Brock
- Bayer AG, PU-Anwendungstechnik, Technische Stellungnahme, 5090 Leverkusen, Bayerwerk, Federal Republic of Germany
| | - M. Herrmann
- Bayer AG, PU-Anwendungstechnik, Technische Stellungnahme, 5090 Leverkusen, Bayerwerk, Federal Republic of Germany
| | - K.D. Wolf
- Bayer AG, PU-Anwendungstechnik, Technische Stellungnahme, 5090 Leverkusen, Bayerwerk, Federal Republic of Germany
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31
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Phaku P, Lebughe M, Strauß L, Peters G, Herrmann M, Mumba D, Mellmann A, Muyembe-Tamfum JJ, Schaumburg F. Unveiling the molecular basis of antimicrobial resistance in Staphylococcus aureus from the Democratic Republic of the Congo using whole genome sequencing. Clin Microbiol Infect 2016; 22:644.e1-5. [PMID: 27102139 DOI: 10.1016/j.cmi.2016.04.009] [Citation(s) in RCA: 20] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 03/29/2016] [Accepted: 04/08/2016] [Indexed: 11/25/2022]
Abstract
Staphylococcus aureus from sub-Saharan Africa is frequently resistant to antimicrobial agents that are commonly used to treat invasive infections in resource-limited settings. The underlying mechanisms of resistance are largely unknown. We therefore performed whole genome sequencing (WGS) on S. aureus from the Democratic Republic of the Congo (DRC) to analyse the genetic determinants of antimicrobial resistance. One hundred S. aureus samples were collected from community-associated asymptomatic nasal carriers in the metropolitan area of Kinshasa, DRC, between 2013 and 2014. Phenotypic resistance against 15 antimicrobial agents was compared to the genotypic results that were extracted from WGS data using Mykrobe predictor and the SeqSphere(+) software that screened for 106 target genes associated with resistance. Isolates were phenotypically resistant against penicillin (97%, n=97), trimethoprim (72%, n=72) and tetracycline (54%, n=45). Thirty-three isolates (33%) were methicillin-resistant S. aureus (MRSA). Of these, nine isolates (27.3%) were oxacillin-susceptible MRSA (OS-MRSA) and belonged to ST8 (t1476). The Y195F mutation of FemA was associated with OS-MRSA (p 0.015). The majority of trimethoprim resistant isolates carried dfrG. Tetracycline resistance was associated with tet(K). The concordance between phenotypic susceptibility testing and both WGS analysis tools was similar and ranged between 96% and 100%. In conclusion, a high proportion of OS-MRSA in the DRC was linked to mutations of FemA. Genotypic and phenotypical antimicrobial susceptibility testing showed high concordance. This encourages the future use of WGS in routine antimicrobial susceptibility testing.
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Affiliation(s)
- P Phaku
- Institut National de Recherche Bio-Médicale, Université de Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - M Lebughe
- Institut National de Recherche Bio-Médicale, Université de Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - L Strauß
- Institute of Hygiene, University Hospital Münster, Münster, Germany
| | - G Peters
- Institute of Medical Microbiology, University Hospital Münster, Münster, Germany
| | - M Herrmann
- Institute of Medical Microbiology and Hygiene, University Hospital of Saarland, Homburg, Germany
| | - D Mumba
- Institut National de Recherche Bio-Médicale, Université de Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - A Mellmann
- Institute of Hygiene, University Hospital Münster, Münster, Germany
| | - J-J Muyembe-Tamfum
- Institut National de Recherche Bio-Médicale, Université de Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - F Schaumburg
- Institute of Medical Microbiology, University Hospital Münster, Münster, Germany.
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32
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Heudorf U, Cuny C, Herrmann M, Kempf V, Mischler D, Schulze J, Zinn C. Multiresistente Erreger (MRE) in der ambulanten Dialyse, der ambulanten und stationären Pflege sowie in der Rehabilitation – Daten aus dem MRE-Netz Rhein-Main 2012 – 2014. Gesundheitswesen 2016. [DOI: 10.1055/s-0036-1578866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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33
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Herrmann M, Bara JJ, Sprecher CM, Menzel U, Jalowiec JM, Osinga R, Scherberich A, Alini M, Verrier S. Pericyte plasticity - comparative investigation of the angiogenic and multilineage potential of pericytes from different human tissues. Eur Cell Mater 2016; 31:236-49. [PMID: 27062725 DOI: 10.22203/ecm.v031a16] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Pericyte recruitment is essential for the stability of newly formed vessels. It was also suggested that pericytes represent common ancestor cells giving rise to mesenchymal stem cells (MSCs) in the adult. Here, we systematically investigated pericytes and MSCs from different human tissues in terms of their angiogenic and multilineage differentiation potential in vitro in order to assess the suitability of the different cell types for the regeneration of vascularised tissues. Magnetic-activated cell sorting (MACS®) was used to enrich CD34-CD146+ pericytes from adipose tissue (AT) and bone marrow (BM). The multilineage potential of pericytes was assessed by testing their capability to differentiate towards osteogenic, adipogenic and chondrogenic lineage in vitro. Pericytes and endothelial cells were co-seeded on Matrigel™ and the formation of tube-like structures was examined to study the angiogenic potential of pericytes. MSCs from AT and BM were used as controls. CD34-CD146+ cells were successfully enriched from AT and BM. Only BM-derived cells exhibited trilineage differentiation potential. AT-derived cells displayed poor chondrogenic differentiation upon stimulation with transforming growth factor-β1. Interestingly, osteogenic differentiation was more efficient in AT-PC and BM-PC compared to the respective full MSC population. Matrigel™ assays revealed that pericytes from all tissues integrated into tube-like structures. We show that MACS®-enriched pericytes from BM and AT have the potential to regenerate tissues of different mesenchymal lineages and support neovascularisation. MACS® represents a simple enrichment strategy of cells, which is of particular interest for clinical application. Finally, our results suggest that the regenerative potential of pericytes depends on their tissue origin, which is an important consideration for future studies.
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Affiliation(s)
- M Herrmann
- AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos Platz,
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34
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Maueröder C, Chaurio RA, Dumych T, Podolska M, Lootsik MD, Culemann S, Friedrich RP, Bilyy R, Alexiou C, Schett G, Berens C, Herrmann M, Munoz LE. A blast without power - cell death induced by the tuberculosis-necrotizing toxin fails to elicit adequate immune responses. Cell Death Differ 2016; 23:1016-25. [PMID: 26943324 DOI: 10.1038/cdd.2016.4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 12/25/2015] [Accepted: 12/29/2015] [Indexed: 12/14/2022] Open
Abstract
In this study, we deploy a doxycycline-dependent suicide switch integrated in a tumor challenge model. With this experimental setup, we characterized the immunological consequences of cells dying by four distinct cell death stimuli in vivo. We observed that apoptotic cell death induced by expression of the truncated form of BH3 interacting-domain death agonist (tBid) and a constitutively active form of caspase 3 (revC3), respectively, showed higher immunogenicity than cell death induced by expression of the tuberculosis-necrotizing toxin (TNT). Our data indicate that the early release of ATP induces the silent clearance of dying cells, whereas the simultaneous presence of 'find me' signals and danger-associated molecular patterns (DAMPs) promotes inflammatory reactions and increased immunogenicity. This proposed model is supported by findings showing that the production and release of high concentrations of IL-27 by bone-marrow-derived macrophages (BMDM) is limited to BMDM exposed to those forms of death that simultaneously released ATP and the DAMPs heat-shock protein 90 (HSP90) and high-mobility group box-1 protein (HMGB1). These results demonstrate that the tissue microenvironment generated by dying cells may determine the subsequent immune response.
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Affiliation(s)
- C Maueröder
- Department of Internal Medicine 3 - Rheumatology and Immunology, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
| | - R A Chaurio
- Department of Internal Medicine 3 - Rheumatology and Immunology, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
| | - T Dumych
- Danylo Halytsky Lviv National Medical University, Lviv, Ukraine.,Institute of Cell Biology, National Academy of Sciences of Ukraine, Lviv, Ukraine
| | - M Podolska
- Department of Internal Medicine 3 - Rheumatology and Immunology, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
| | - M D Lootsik
- Danylo Halytsky Lviv National Medical University, Lviv, Ukraine.,Institute of Cell Biology, National Academy of Sciences of Ukraine, Lviv, Ukraine
| | - S Culemann
- Department of Internal Medicine 3 - Rheumatology and Immunology, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
| | - R P Friedrich
- ENT Clinic, Section of Experimental Oncology and Nanomedicine (SEON), Else Kröner-Fresenius-Stiftung Professorship, University Hospital Erlangen, Erlangen, Germany
| | - R Bilyy
- Department of Internal Medicine 3 - Rheumatology and Immunology, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany.,Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - C Alexiou
- ENT Clinic, Section of Experimental Oncology and Nanomedicine (SEON), Else Kröner-Fresenius-Stiftung Professorship, University Hospital Erlangen, Erlangen, Germany
| | - G Schett
- Department of Internal Medicine 3 - Rheumatology and Immunology, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
| | - C Berens
- Institute of Molecular Pathogenesis, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Jena, Germany
| | - M Herrmann
- Department of Internal Medicine 3 - Rheumatology and Immunology, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
| | - L E Munoz
- Department of Internal Medicine 3 - Rheumatology and Immunology, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
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35
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Birge RB, Boeltz S, Kumar S, Carlson J, Wanderley J, Calianese D, Barcinski M, Brekken RA, Huang X, Hutchins JT, Freimark B, Empig C, Mercer J, Schroit AJ, Schett G, Herrmann M. Phosphatidylserine is a global immunosuppressive signal in efferocytosis, infectious disease, and cancer. Cell Death Differ 2016; 23:962-78. [PMID: 26915293 PMCID: PMC4987730 DOI: 10.1038/cdd.2016.11] [Citation(s) in RCA: 442] [Impact Index Per Article: 55.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 01/05/2016] [Accepted: 01/07/2016] [Indexed: 02/06/2023] Open
Abstract
Apoptosis is an evolutionarily conserved and tightly regulated cell death modality. It serves important roles in physiology by sculpting complex tissues during embryogenesis and by removing effete cells that have reached advanced age or whose genomes have been irreparably damaged. Apoptosis culminates in the rapid and decisive removal of cell corpses by efferocytosis, a term used to distinguish the engulfment of apoptotic cells from other phagocytic processes. Over the past decades, the molecular and cell biological events associated with efferocytosis have been rigorously studied, and many eat-me signals and receptors have been identified. The externalization of phosphatidylserine (PS) is arguably the most emblematic eat-me signal that is in turn bound by a large number of serum proteins and opsonins that facilitate efferocytosis. Under physiological conditions, externalized PS functions as a dominant and evolutionarily conserved immunosuppressive signal that promotes tolerance and prevents local and systemic immune activation. Pathologically, the innate immunosuppressive effect of externalized PS has been hijacked by numerous viruses, microorganisms, and parasites to facilitate infection, and in many cases, establish infection latency. PS is also profoundly dysregulated in the tumor microenvironment and antagonizes the development of tumor immunity. In this review, we discuss the biology of PS with respect to its role as a global immunosuppressive signal and how PS is exploited to drive diverse pathological processes such as infection and cancer. Finally, we outline the rationale that agents targeting PS could have significant value in cancer and infectious disease therapeutics.
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Affiliation(s)
- R B Birge
- Department of Microbiology, Biochemistry and Molecular Genetics, Cancer Center, Rutgers New Jersey Medical School, 205 South Orange Ave, Newark, NJ 07103, USA
| | - S Boeltz
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), University Hospital Erlangen, 91054 Erlangen, Germany
| | - S Kumar
- Department of Microbiology, Biochemistry and Molecular Genetics, Cancer Center, Rutgers New Jersey Medical School, 205 South Orange Ave, Newark, NJ 07103, USA
| | - J Carlson
- Peregrine Pharmaceuticals, 14282 Franklin Avenue, Tustin, CA 92780, USA
| | - J Wanderley
- Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - D Calianese
- Department of Microbiology, Biochemistry and Molecular Genetics, Cancer Center, Rutgers New Jersey Medical School, 205 South Orange Ave, Newark, NJ 07103, USA
| | - M Barcinski
- Laboratório de Biologia Celular, Instituto Oswaldo Cruz, Rio de Janeiro, Brazil
| | - R A Brekken
- Division of Surgical Oncology, Department of Surgery, Hamon Center for Therapeutic Oncology Research, Dallas, TX 75390-8593, USA.,Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, TX 75390-8593, USA
| | - X Huang
- Division of Surgical Oncology, Department of Surgery, Hamon Center for Therapeutic Oncology Research, Dallas, TX 75390-8593, USA.,Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, TX 75390-8593, USA
| | - J T Hutchins
- Peregrine Pharmaceuticals, 14282 Franklin Avenue, Tustin, CA 92780, USA
| | - B Freimark
- Peregrine Pharmaceuticals, 14282 Franklin Avenue, Tustin, CA 92780, USA
| | - C Empig
- Peregrine Pharmaceuticals, 14282 Franklin Avenue, Tustin, CA 92780, USA
| | - J Mercer
- Medical Research Council Laboratory for Molecular Cell Biology, University College London, Gower Street, London WC1E 6BT, UK
| | - A J Schroit
- Simmons Cancer Center and the Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX 75390 USA
| | - G Schett
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), University Hospital Erlangen, 91054 Erlangen, Germany
| | - M Herrmann
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), University Hospital Erlangen, 91054 Erlangen, Germany
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36
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Trudzinski F, Becker S, Flaig M, Langer F, Bals R, Wilkens H, Herrmann M, Lepper PM. Nachweis von Mycobacterium chimaera in Temperaturregulierungsgeräten der extrakorporalen Membranoxygenation (ECMO). Pneumologie 2016. [DOI: 10.1055/s-0036-1572109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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37
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Magorivska I, Muñoz LE, Janko C, Dumych T, Rech J, Schett G, Nimmerjahn F, Bilyy R, Herrmann M. Sialylation of anti-histone immunoglobulin G autoantibodies determines their capabilities to participate in the clearance of late apoptotic cells. Clin Exp Immunol 2016; 184:110-7. [PMID: 26618514 DOI: 10.1111/cei.12744] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/27/2015] [Indexed: 12/22/2022] Open
Abstract
The Fc portion of immunoglobulin (Ig)G harbours a single glycosylation site. Glycan sialylation is critical for structure and for certain effector functions of IgG. Anti-histone IgG of patients with systemic lupus erythematosus is reportedly responsible for the recruitment of polymorphonuclear cells (PMN) to the clearance of apoptotic cells. Autoantibodies decorating secondary necrotic cells (SNEC) induce proinflammatory responses after activation of blood-borne phagocytes. Analysing the sialylation status of affinity-purified anti-histone IgG in patients with systemic lupus erythematosus (SLE), we demonstrated that the anti-histone IgG was contained preferentially in the non-sialylated fraction. In functional ex-vivo phagocytosis studies, non-sialylated anti-SNEC IgG directed SNEC preferentially into PMN but did not change their cytokine secretion profiles. In contrast, sialylated IgG reduced the phagocytosis by monocytes of SNEC. Moreover, the sialylated anti-SNEC IgG was not simply anti-inflammatory, but switched the cytokine secretion profiles from interleukin (IL)-6/IL-8 to tumour necrosis factor (TNF)-α/IL-1β. Here we describe how different sialylation statuses of IgG autoantibodies contribute to the complex inflammatory network that regulates chronic inflammation.
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Affiliation(s)
- I Magorivska
- Department of Internal Medicine 3 Rheumatology and Immunology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany.,Institute of Cell Biology, National Academy of Sciences of Ukraine, Lviv, Ukraine
| | - L E Muñoz
- Department of Internal Medicine 3 Rheumatology and Immunology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - C Janko
- Department of Otorhinolaryngology, Head and Neck Surgery, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - T Dumych
- Institute of Cell Biology, National Academy of Sciences of Ukraine, Lviv, Ukraine
| | - J Rech
- Department of Internal Medicine 3 Rheumatology and Immunology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - G Schett
- Department of Internal Medicine 3 Rheumatology and Immunology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - F Nimmerjahn
- Chair of Genetic, Department of Biology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - R Bilyy
- Department of Internal Medicine 3 Rheumatology and Immunology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany.,Institute of Cell Biology, National Academy of Sciences of Ukraine, Lviv, Ukraine
| | - M Herrmann
- Department of Internal Medicine 3 Rheumatology and Immunology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
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38
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Heudorf U, Färber D, Mischler D, Schade M, Zinn C, Nillius D, Herrmann M. Multiresistente Erreger in Rehabilitationseinrichtungen im Rhein-Main-Gebiet, Deutschland, 2014: II. Ärztliche Risikoanalyse und Hygienemaßnahmen. REHABILITATION 2015; 54:375-81. [DOI: 10.1055/s-0035-1564099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
| | | | | | | | - C. Zinn
- Institut für Medizinische Diagnostik GmbH, Zentrum für Hygiene und Infektionsprävention, Ingelheim
| | - D. Nillius
- Institut für Medizinische Mikrobiologie und Hygiene, Universitätsklinikum des Saarlandes, Homburg/Saar und MRSAar Netz
| | - M. Herrmann
- Institut für Medizinische Mikrobiologie und Hygiene, Universitätsklinikum des Saarlandes, Homburg/Saar und MRSAar Netz
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39
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Heudorf U, Färber D, Mischler D, Schade M, Zinn C, Cuny C, Nillius D, Herrmann M. [Multidrug-Resistant Organisms (MDRO) in Rehabilitation Clinics in the Rhine-Main-District, Germany, 2014: Prevalence and Risk Factors]. REHABILITATION 2015; 54:339-45. [PMID: 26505186 DOI: 10.1055/s-0035-1559642] [Citation(s) in RCA: 9] [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] [Indexed: 10/22/2022]
Abstract
BACKGROUND While a limited number of studies have investigated the prevalence of methicillin-resistant Staphylococcus aureus (MRSA) in medical rehabilitation institutions, almost no data on the colonization of rehabilitation patients with multiresistant gram-negative rods is available. Here we report on a large multicenter study on the prevalence of MRSA and multiresistant pathogens in rehabilitation institutions in the Rhine-Main area in 2014. MATERIALS AND METHODS Altogether, 21 rehabilitation hospitals participated. For all patients, age, gender, previous history of hospitalizations, surgery, previous colonization with multidrug-resistant organisms, use of a medical device, current antimicrobial therapy, and the current infection status were ascertained. On voluntary basis, nare and throat swabs were taken for analysis of MRSA and rectal swabs were tested for extended spectrum betalactamase-producing gram-negative bacteria (ESBL). RESULTS 50% of 2 440 patients had a history of hospitalization within the previous 6 months while 39% had undergone surgery during the past 30 days. Approximately a quarter of the patients had been transferred to a rehabilitation hospital directly from an acute care hospital, had been under antimicrobial therapy with the past three months, or had travelled to a foreign country within the previous year. Risk factors such as lesions of the intact skin or presence of medical devices were rarely reported (< 5%) within the exception of patients undergoing geriatric or neurologic acute care rehabilitation. 0.7% (15/2155) of the patients were colonized with MRSA, while 7.7% (110/1434) showed a positive result for ESBL. The highest prevalence rates for multiresistant organisms were encountered among patients with neurologic rehabilitation (MRSA, 1.3%, and ESBL, 10.2%) or with geriatric rehabilitation (MRSA, 9.4%, and ESBL, 22.7%). CONCLUSION In the rehabilitation patient population, the prevalence rates of MRSA and ESBL were found to be in the range of rates encountered in the general population (reported rates for MRSA, 0.5%, and ESBL, 6.3%). The known risk factors for MRSA such as skin lesions, medical devices and previous history for MRSA were also confirmed among this patient population. Direct transfer from an acute care hospital, antimicrobial treatment during the past 3 months, and wounds proved significant risk factors for ESBL colonization. Patients of neurologic rehabilitation and geriatric patients showed the highest rates of risk factors and the highest prevalence rates of multidrug-resistant organisms. It appears to be of importance for rehabilitation hospitals to be geared to the needs of patients with multidrug-resistant organisms, and prevent the transmission of these pathogens by appropriate hygiene measures.
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Affiliation(s)
- U Heudorf
- MRE-Netz Rhein-Main, Gesundheitsamt der Stadt Frankfurt am Main
| | - D Färber
- MRE-Netz Rhein-Main, Gesundheitsamt der Stadt Frankfurt am Main
| | - D Mischler
- MRE-Netz Rhein-Main, Gesundheitsamt der Stadt Frankfurt am Main
| | - M Schade
- MRE-Netz Rhein-Main, Gesundheitsamt der Stadt Frankfurt am Main
| | - C Zinn
- Zentrum für Hygiene und Infektionsprävention, Institut für Medizinische Diagnostik GmbH, Ingelheim
| | - C Cuny
- Nationales Referenzzentrum für Staphylokokken, Wernigerode
| | - D Nillius
- Institut für Medizinische Mikrobiologie und Hygiene, Universitätsklinikum des Saarlandes, Homburg/Saar, und MRSAar Netz
| | - M Herrmann
- Institut für Medizinische Mikrobiologie und Hygiene, Universitätsklinikum des Saarlandes, Homburg/Saar, und MRSAar Netz
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Akoua-Koffi C, Tia H, Plo J, Monemo P, Cissé A, Yao C, Yenan P, Touré F, Ilupeju V, Bogoch I, Utzinger J, Herrmann M, Becker S. Epidemiology of community-onset bloodstream infections in Bouaké, central Côte d'Ivoire. New Microbes New Infect 2015; 7:100-4. [PMID: 26442153 PMCID: PMC4552808 DOI: 10.1016/j.nmni.2015.06.009] [Citation(s) in RCA: 12] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 06/22/2015] [Accepted: 06/25/2015] [Indexed: 11/16/2022] Open
Abstract
Bacterial bloodstream infections (BSI) account for considerable morbidity worldwide, but epidemiological data from resource-constrained tropical settings are scarce. We analysed 293 blood cultures from patients presenting to a regional referral hospital in Bouaké, central Côte d’Ivoire, to determine the aetiology of community-onset BSI. The prevalence of bacteraemia was 22.5%, with children being most commonly affected. Enterobacteriaceae (predominantly Klebsiella pneumoniae and Salmonella enterica) accounted for 94% of BSI. Staphylococcus aureus was the only relevant Gram-positive pathogen. Clinical signs and symptoms were not significantly associated with blood culture positivity after controlling for malaria.
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Affiliation(s)
- C. Akoua-Koffi
- Laboratoire de Bactériologie-Virologie, Cote d'Ivoire
- Unité de Formation et Recherche Sciences Médicales, Université Alassane Ouattara de Bouaké, Bouaké, Côte d'Ivoire
| | - H. Tia
- Laboratoire de Bactériologie-Virologie, Cote d'Ivoire
- Unité de Formation et Recherche Sciences Médicales, Université Alassane Ouattara de Bouaké, Bouaké, Côte d'Ivoire
| | - J.K. Plo
- Service de Pédiatrie, Centre Hospitalier Universitaire de Bouaké, Cote d'Ivoire
- Unité de Formation et Recherche Sciences Médicales, Université Alassane Ouattara de Bouaké, Bouaké, Côte d'Ivoire
| | - P. Monemo
- Laboratoire de Bactériologie-Virologie, Cote d'Ivoire
- Unité de Formation et Recherche Sciences Médicales, Université Alassane Ouattara de Bouaké, Bouaké, Côte d'Ivoire
| | - A. Cissé
- Laboratoire de Bactériologie-Virologie, Cote d'Ivoire
| | - C. Yao
- Service de Pédiatrie, Centre Hospitalier Universitaire de Bouaké, Cote d'Ivoire
- Unité de Formation et Recherche Sciences Médicales, Université Alassane Ouattara de Bouaké, Bouaké, Côte d'Ivoire
| | - P.J. Yenan
- Service de Pédiatrie, Centre Hospitalier Universitaire de Bouaké, Cote d'Ivoire
- Unité de Formation et Recherche Sciences Médicales, Université Alassane Ouattara de Bouaké, Bouaké, Côte d'Ivoire
| | - F.S. Touré
- Laboratoire de Bactériologie-Virologie, Cote d'Ivoire
- Unité de Formation et Recherche Sciences Médicales, Université Alassane Ouattara de Bouaké, Bouaké, Côte d'Ivoire
| | - V. Ilupeju
- Laboratoire de Bactériologie-Virologie, Cote d'Ivoire
- Unité de Formation et Recherche Sciences Médicales, Université Alassane Ouattara de Bouaké, Bouaké, Côte d'Ivoire
| | - I.I. Bogoch
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada
- Divisions of Internal Medicine and Infectious Diseases, Toronto General Hospital, Toronto, Ontario, Canada
| | - J. Utzinger
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Switzerland
- University of Basel, Basel, Switzerland
| | - M. Herrmann
- Institute of Medical Microbiology and Hygiene, Saarland University, Homburg/Saar, Germany
| | - S.L. Becker
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Switzerland
- University of Basel, Basel, Switzerland
- Institute of Medical Microbiology and Hygiene, Saarland University, Homburg/Saar, Germany
- Corresponding author: S.L. Becker, Institute of Medical Microbiology and Hygiene, Saarland University, Kirrberger Straße, Building 43, D-66421 Homburg/Saar, Germany
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Becker SL, Marti H, Zimmermann S, Vidacek D, Herrmann M, Utzinger J, Schnabel PA, Bohle RM. Application in Europe of a urine-based rapid diagnostic test for confirmation of Schistosoma mansoni infection in migrants from endemic areas. Euro Surveill 2015; 20. [DOI: 10.2807/1560-7917.es2015.20.23.21151] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
In February 2015, a male patient from Eritrea with persistent abdominal pain and rectal bleeding was diagnosed with Schistosoma mansoni infection upon examination of a rectal biopsy. In May 2015, repeated stool microscopy identified S. mansoni infection in another Eritrean patient with abdominal pain and considerable eosinophilia (34%). Use of point-of-care circulating cathodic antigen (POC-CCA) tests on urine confirmed S. mansoni infection in both patients. Wider application of non-invasive POC-CCA urine tests will improve schistosomiasis diagnosis and clinical management in migrants.
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Affiliation(s)
- S L Becker
- Institute of Medical Microbiology and Hygiene, Saarland University, Homburg/Saar, Germany
- University of Basel, Basel, Switzerland
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Basel, Switzerland
| | - H Marti
- Department of Medical Services and Diagnostic, Swiss Tropical and Public Health Institute, Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - S Zimmermann
- Department of Medicine II, Saarland University, Homburg/Saar, Germany
| | - D Vidacek
- Department of Medicine II, Saarland University, Homburg/Saar, Germany
| | - M Herrmann
- Institute of Medical Microbiology and Hygiene, Saarland University, Homburg/Saar, Germany
| | - J Utzinger
- University of Basel, Basel, Switzerland
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Basel, Switzerland
| | - P A Schnabel
- Institute of Pathology, Saarland University, Homburg/Saar, Germany
| | - R M Bohle
- Institute of Pathology, Saarland University, Homburg/Saar, Germany
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Herrmann M. SP0082 Glycosylation of Anti-Nuclear Autoantibodies Determines Their Inflammatory Potential. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.6774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Becker S, Chatigre J, Gohou JP, Coulibaly J, Leuppi R, Polman K, Chappuis F, Mertens P, Herrmann M, N'Goran E, Utzinger J, von Müller L. Combined stool-based multiplex PCR and microscopy for enhanced pathogen detection in patients with persistent diarrhoea and asymptomatic controls from Côte d’Ivoire. Clin Microbiol Infect 2015; 21:591.e1-10. [DOI: 10.1016/j.cmi.2015.02.016] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 02/06/2015] [Accepted: 02/19/2015] [Indexed: 02/04/2023]
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Schauer C, Czegley C, Billyy R, Hahn J, Rech J, Munoz L, Schett G, Herrmann M, Hoffmann MH. A4.8 The oxidative burst mediates resolution of inflammation and bone homeostasis in gout. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-207259.90] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Pieterse E, Hofstra J, Berden J, Herrmann M, Dieker J, van der Vlag J. Acetylated histones contribute to the immunostimulatory potential of neutrophil extracellular traps in systemic lupus erythematosus. Clin Exp Immunol 2015; 179:68-74. [PMID: 24758196 DOI: 10.1111/cei.12359] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/17/2014] [Indexed: 12/20/2022] Open
Abstract
In addition to disturbed apoptosis and insufficient clearance of apoptotic cells, there is recent evidence for a role of neutrophils in the aetiopathogenesis of systemic lupus erythematosus (SLE). In response to various stimuli, neutrophils can rapidly release DNA fibres decorated with citrullinated histones and anti-microbial peptides. These structures are referred to as neutrophil extracellular traps (NETs). In addition to apoptotic cell-derived microparticles, these NETs may comprise a further source of autoantigens, able to drive the autoimmune response in SLE. Our group recently identified specific histone modifications occurring during apoptosis that play an important role in the autoimmune response in SLE. In the current study, we evaluated the presence and immunostimulatory potential of these previously identified histone modifications in NETs. Compared to NETs from healthy donors, the histones present in NETs formed by SLE-derived neutrophils contain increased amounts of acetylated and methylated residues, which we previously observed to be associated with apoptosis and SLE. Treatment of neutrophils with histone deacetylase (HDAC) inhibitor Trichostatin A (TSA), prior to induction of NETosis, induced NETs containing hyperacetylated histones, endowed with an increased capacity to activate macrophages. This implies that specific histone modifications, in particular acetylation, might enhance the immunostimulatory potential of NETs in SLE.
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Affiliation(s)
- E Pieterse
- Department of Nephrology, Radboud University Medical Center, Nijmegen, the Netherlands
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Zirngibl M, Fürnrohr BG, Janko C, Munoz LE, Voll RE, Gregory CD, Schett G, Herrmann M. Loading of nuclear autoantigens prototypically recognized by systemic lupus erythematosus sera into late apoptotic vesicles requires intact microtubules and myosin light chain kinase activity. Clin Exp Immunol 2015; 179:39-49. [PMID: 24673456 DOI: 10.1111/cei.12342] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/25/2014] [Indexed: 11/29/2022] Open
Abstract
Most cases of systemic lupus erythematosus (SLE) are characterized by an impaired clearance of apoptotic cells in various tissues. Non-cleared apoptotic waste is considered an immunogen driving the autoimmune response in patients with SLE. During the execution of apoptosis, membrane blebs are formed and filled with cellular components. Here, we evaluate the cytoskeletal pathway(s) responsible for the loading of SLE prototypic nuclear autoantigens into the apoptotic cell-derived membranous vesicles (ACMV) generated during late phases of apoptosis. HeLa cells expressing a fusion protein of histone H2B with green fluorescent protein (GFP) were irradiated with ultraviolet (UV)-B to induce apoptosis. The appearance and trafficking of chromatin-derived material was monitored by fluorescence microscopy. Specific inhibitors of cytoskeletal pathways were employed to identify the motile elements involved in translocation and trafficking of the nuclear components. We observed that immediately after their appearance the ACMV did not contain histone H2B(GFP) ; in this phase the fluorescence was contained in the nuclear remnants and the cytoplasm. Within consecutive minutes the ACMV were loaded with chromatin-derived material, whereas the loading of simultaneously created ACMV with histone H2B(GFP) was not uniform. Some ACMV were preferentially filled and, consequently, showed a remarkably higher histone H2B(GFP) accumulation. Inhibitors of the cytoskeleton revealed that functional microtubules and myosin light chain kinase are required for nuclear shrinkage and loading of nuclear material into the ACMV, respectively.
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Affiliation(s)
- M Zirngibl
- Department of Internal Medicine 3, University of Erlangen-Nürnberg, Erlangen, Germany; Department for General Pediatrics, Haematology and Oncology, University Children's Hospital Tübingen, Tübingen, Germany
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Tomin A, Dumych T, Tolstyak Y, Kril I, Mahorivska I, Bila E, Stoika R, Herrmann M, Kit Y, Bilyy R. Desialylation of dying cells with catalytically active antibodies possessing sialidase activity facilitate their clearance by human macrophages. Clin Exp Immunol 2015; 179:17-23. [PMID: 24580640 DOI: 10.1111/cei.12312] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/24/2014] [Indexed: 12/26/2022] Open
Abstract
Recently we reported the first known incidence of antibodies possessing catalytic sialidase activity (sialidase abzymes) in the serum of patients with multiple myeloma and systemic lupus erythematosus (SLE). These antibodies desialylate biomolecules, such as glycoproteins, gangliosides and red blood cells. Desialylation of dying cells was demonstrated to facilitate apoptotic cell clearance. In this study we assessed the possibility to facilitate dying cell clearance with the use of F(ab)2 fragments of sialidase abzymes. Two sources of sialidase abzymes were used: (i) those isolated from sera of patients with SLE after preliminary screening of a cohort of patients for sialidase activity; and (ii) by creating an induced sialidase abzyme through immunization of a rabbit with synthetic hapten consisting of a non-hydrolysable analogue of sialidase reaction conjugated with bovine serum albumin (BSA) or keyhole limpet haemocyanin (KLH). Antibodies were purified by ammonium sulphate precipitation, protein-G affinity chromatography and size exclusion-high performance liquid chromatography (HPLC-SEC). Effect of desialylation on efferocytosis was studied using human polymorphonuclear leucocytes (PMN), both viable and aged, as prey, and human monocyte-derived macrophages (MoMa). Treatment of apoptotic and viable prey with both disease-associated (purified from blood serum of SLE patients) and immunization-induced (obtained by immunization of rabbits) sialidase abzymes, its F(ab)2 fragment and bacterial neuraminidase (as positive control) have significantly enhanced the clearance of prey by macrophages. We conclude that sialidase abzyme can serve as a protective agent in autoimmune patients and that artificial abzymes may be of potential therapeutic value.
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Affiliation(s)
- A Tomin
- Institute of Cell Biology, National Academy of Sciences of Ukraine, Lviv, Ukraine
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Franz S, Muñoz LE, Heyder P, Herrmann M, Schiller M. Unconventional apoptosis of polymorphonuclear neutrophils (PMN): staurosporine delays exposure of phosphatidylserine and prevents phagocytosis by MΦ-2 macrophages of PMN. Clin Exp Immunol 2015; 179:75-84. [PMID: 24995908 DOI: 10.1111/cei.12412] [Citation(s) in RCA: 15] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/01/2014] [Indexed: 12/14/2022] Open
Abstract
Apoptosis of polymorphonuclear neutrophils (PMN) and subsequent 'silent' removal represents an important check-point for the resolution of inflammation. Failure in PMN clearance resulting in secondary necrosis-driven tissue damage has been implicated in conditions of chronic inflammation and autoimmunity. Apoptotic PMN undergo profound biophysical changes that warrant their efficient recognition and uptake by phagocytes before fading to secondary necrosis. In this study, we demonstrate that staurosporine (STS), a non-selective but potent inhibitor of cyclin-dependent kinase and protein kinase C, exerts a drastic impact on PMN apoptosis. PMN treated with STS underwent an unconventional form of cell death characterized by a delayed exposure of aminophospholipids, including phosphatidylserine (PS) and phosphatidylethanolamine and an increased exposure of neo-glycans. STS caused an impaired cellular fragmentation and accelerated DNA fragmentation. Phagocytosis of STS-treated PMN lacking PS on their surfaces was decreased significantly, which highlights the importance of PS for the clearance of apoptotic PMN. Specific opsonization with immune complexes completely restored phagocytosis of STS-treated PMN, demonstrating the efficiency of back-up clearance pathways in the absence of PS exposure.
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Affiliation(s)
- S Franz
- Department of Dermatology, Venerology und Allergology, Leipzig University, Leipzig, Germany
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