Georg Schett

Universitätsklinikum Erlangen, Erlangen, Bavaria, Germany

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Publications (554)3629.46 Total impact

  • Michal Tomcik, Katrin Palumbo-Zerr, Pawel Zerr, Barbora Sumova, Jerome Avouac, Clara Dees, Alfiya Distler, Radim Becvar, Oliver Distler, Georg Schett, Ladislav Senolt, Jörg H W Distler
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    ABSTRACT: Tribbles homologue 3 (TRB3) is a pseudokinase that modifies the activation of various intracellular signalling pathways to control fundamental processes extending from mitosis and cell activation to apoptosis and modulation of gene expression. Here, we aimed to analyse the role of TRB3 in fibroblast activation in systemic sclerosis (SSc). The expression of TRB3 was quantified by quantitative PCR, western blot and immunohistochemistry. The role of TRB3 was analysed in cultured fibroblasts and in experimental fibrosis using small interfering RNA (siRNA)-mediated knockdown and overexpression of TRB3. TRB3 expression was increased in fibroblasts of patients with SSc and in murine models of SSc in a transforming growth factor-β (TGF-β)/Smad-dependent manner. Overexpression of TRB3 stimulated canonical TGF-β signalling and induced an activated phenotype in resting fibroblasts. In contrast, knockdown of TRB3 reduced the profibrotic effects of TGF-β and decreased the collagen synthesis. Moreover, siRNA-mediated knockdown of TRB3 exerted potent antifibrotic effects and ameliorated bleomycin as well as constitutively active TGF-β receptor I-induced fibrosis with reduced dermal thickening, decreased hydroxyproline content and impaired myofibroblast differentiation. The present study characterises TRB3 as a novel profibrotic mediator in SSc. TGF-β induces TRB3, which in turn activates canonical TGF-β/Smad signalling and stimulates the release of collagen, thereby inducing a positive feedback loop that may contribute to aberrant TGF-β signalling in SSc. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.
    Annals of the rheumatic diseases. 01/2015;
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    ABSTRACT: To test medication adherence using the Compliance-Questionnaire-Rheumatology (CQR). Invitation letter and CQR were sent to 240 patients with rheumatoid arthritis. Followup CQR was sent 3 months later. Adherence was evaluated using CQR 80% cutoff scores. Seventy-eight patients who were being treated with disease-modifying antirheumatic drugs provided full information on the CQR at both points in time. Eleven patients (14.1%) were classified as adherent based on taking compliance (TC), with only 3 patients (3.8%) adherent in regard to correct dosing (CD) [followup: 13 (16.7%) and 3 (3.8%) for TC and CD, respectively]. Nonadherence was not related to disease activity or side effects. We demonstrated low adherence, suggesting differences between doctors' records and patients' practice of antirheumatic drug therapy.
    The Journal of rheumatology. 01/2015;
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    ABSTRACT: To evaluate the efficacy and safety of apremilast, an oral phosphodiesterase 4 inhibitor, over 52 weeks in patients with active psoriatic arthritis (PsA) despite prior treatment. Patients were randomized to placebo (n = 168), apremilast 20 mg BID (n = 168), or apremilast 30 mg BID (n = 168). Patients whose swollen and tender joint counts had not improved by ≥ 20% at Week 16 were considered nonresponders and were required to be re-randomized (1:1) to apremilast 20 mg BID or 30 mg BID if they were initially randomized to placebo, or continued their initial treatment of apremilast dose. At Week 24, all remaining patients treated with placebo were re-randomized to apremilast 20 mg BID or 30 mg BID. An American College of Rheumatology 20 (ACR20) response at Week 16 was attained by significantly more patients receiving apremilast 20 mg BID (30.4%, p = 0.0166) or 30 mg BID (38.1%, p = 0.0001) than placebo (19.0%). Among patients receiving apremilast continuously for 52 weeks (n = 254), ACR20 response at Week 52 was observed in 63.0% (75/119, 20 mg BID) and 54.6% (71/130, 30 mg BID) of patients. Response was also maintained across secondary outcomes, including measures of PsA signs and symptoms, skin psoriasis severity, and physical function. The nature, incidence, and severity of adverse events were comparable over the 24-week and 52-week periods. The most common adverse events, diarrhea and nausea, generally occurred early and were self-limited. Continuous apremilast treatment resulted in sustained improvements in PsA for up to 52 weeks. Apremilast had an acceptable safety profile and was generally well tolerated. Clinical trial registration: NCT01172938.
    The Journal of rheumatology. 01/2015;
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    ABSTRACT: Activating transcription factor 3 (ATF3), a member of the ATF/cAMP-responsive element binding (CREB) family of transcription factors, regulates cellular response to stress including oxidative stress. The aim of this study was to analyse the role of ATF3 in fibroblast activation in systemic sclerosis (SSc). ATF3 was analysed by reverse transcription quantitative PCR, western blot and immunohistochemistry. ATF3 knockout fibroblasts and mice were used to study the functional role of ATF3. Knockdown experiments, reporter assays and coimmunoprecipitation were performed to study the effects of ATF3 on Smad and activation protein 1 (AP-1) signalling. The role of c-Jun was analysed by costaining, specific inactivation and coimmunoprecipitation. Transforming growth factor-β (TGFβ) upregulates the expression of ATF3 in SSc fibroblasts. ATF3-deficient fibroblasts were less sensitive to TGFβ, whereas ectopic expression of ATF3 enhanced the profibrotic effects of TGFβ. Mechanistically, ATF3 interacts with Smad3 directly on stimulation with TGFβ and regulates Smad activity in a c-Jun-dependent manner. Knockout of ATF3 protected mice from bleomycin-induced fibrosis and fibrosis induced by overexpression of a constitutively active TGFβ receptor I. Reporter assays and analyses of the expression of Smad target genes demonstrated that binding of ATF3 regulates the transcriptional activity of Smad3. We demonstrate for the first time a key role for ATF3 in fibrosis. Knockout of the ATF3 gene reduced the stimulatory effect of TGFβ on fibroblasts by interfering with canonical Smad signalling and protected the mice from experimental fibrosis in two different models. ATF3 might thus be a candidate for molecular targeted therapies for SSc. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.
    Annals of the rheumatic diseases. 01/2015;
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    ABSTRACT: Mesenchymal responses are an essential aspect of tissue repair. Failure to terminate this repair process correctly, however, results in fibrosis and organ dysfunction. Therapies that block fibrosis and restore tissue homeostasis are not yet available for clinical use. Here we characterize the nuclear receptor NR4A1 as an endogenous inhibitor of transforming growth factor-β (TGF-β) signaling and as a potential target for anti-fibrotic therapies. NR4A1 recruits a repressor complex comprising SP1, SIN3A, CoREST, LSD1, and HDAC1 to TGF-β target genes, thereby limiting pro-fibrotic TGF-β effects. Even though temporary upregulation of TGF-β in physiologic wound healing induces NR4A1 expression and thereby creates a negative feedback loop, the persistent activation of TGF-β signaling in fibrotic diseases uses AKT- and HDAC-dependent mechanisms to inhibit NR4A1 expression and activation. Small-molecule NR4A1 agonists can overcome this lack of active NR4A1 and inhibit experimentally-induced skin, lung, liver, and kidney fibrosis in mice. Our data demonstrate a regulatory role of NR4A1 in TGF-β signaling and fibrosis, providing the first proof of concept for targeting NR4A1 in fibrotic diseases.
    Nature medicine. 01/2015;
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    ABSTRACT: Apart from their role in the immune defence against pathogens evidence of a role of antimicrobial peptides (AMPs) in autoimmune diseases has accumulated in the past years. The aim of this project was to examine the functional impact of the human cathelicidin LL-37 and the mouse cathelicidin-related AMP (CRAMP) on the pathogenesis of lupus and arthritis. Serum LL-37 and anti-LL-37 levels were measured by ELISA in healthy donors and patients with Systemic Lupus Erythematosus (SLE) and Rheumatoid arthritis (RA). Pristane-induced lupus was induced in female wild type (WT) and cathelicidin-deficient (CRAMP-/-) mice. Serum levels of anti-Sm/RNP, anti-dsDNA, and anti-histone were determined via ELISA, cytokines in sera and peritoneal lavages were measured via Multiplex. Expression of Interferon I stimulated genes (ISG) was determined by real-time PCR. Collagen-induced arthritis (CIA) was induced in male WT and CRAMP-/- mice and arthritis severity was visually scored and analysed histomorphometrically by OsteoMeasure software. Serum levels of anti-LL-37 were higher in SLE-patients compared to healthy donors or patients with RA. However, no correlation to markers of disease activity or organ involvement was observed. No significant differences of autoantibody or cytokine/chemokine levels, or of expression of ISGs were observed between WT and CRAMP-/- mice after pristane-injection. Furthermore, lung and kidney pathology did not differ in the absence of CRAMP. Incidence and severity of CIA and histological parameters (inflammation, cartilage degradation, and bone erosion) were not different in WT and CRAMP-/- mice. Although cathelicidins are upregulated in mouse models of lupus and arthritis, cathelicidin-deficiency did not persistently affect the diseases. Also in patients with SLE, autoantibodies against cathelicidins did not correlate with disease manifestation. Reactivity against cathelicidins in lupus and arthritis could thus be an epiphenomenon caused by extensive overexpression in blood and affected tissues. In addition, other cationic AMPs could functionally compensate for the deficiency of cathelicidins.
    PLoS ONE 12/2014; 9(12):e115474. · 3.53 Impact Factor
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    ABSTRACT: OBJECTIVE: Arthritis is a chronic inflammatory disease characterised by immune cell infiltration and mesenchymal cell expansion in the joints. Although the role of immune cells in arthritis is well characterised, the development of mesenchymal cell hyperplasia needs to be better defined. Here, we analysed the role of the ribosomal S6 kinase Rsk2, which we found to be highly activated in joints of patients with arthritis, in the development of mesenchymal cell hyperplasia. METHODS: We genetically inactivated Rsk2 in the tumour necrosis factor (TNF)-α transgenic (TNFtg) mice, an animal model for human inflammatory arthritis. Clinical and histological signs of arthritis as well as molecular markers of inflammation and joint destruction were quantified. Fibroblast-like synoviocytes (FLS) were characterised in vitro and the effect of Rsk2 deletion on the pattern of gene expression was determined. RESULTS: Rsk2 deficiency in TNFtg mice results in earlier and exacerbated inflammation as well as increased bone and cartilage destruction. The production of inflammatory cytokines, matrix metalloproteinases and osteoclastogenic molecules was significantly increased in vivo upon Rsk2 inactivation. Bone marrow deficient in Rsk2 could not transfer this phenotype, indicating that Rsk2 expression in mesenchymal cells controls the course of arthritis. Indeed, Rsk2 deficiency was associated with a more activated phenotype and higher proliferative capacity of FLS, thereby increasing cytokines and production of matrix proteinases. CONCLUSIONS: Rsk2 emerges as a key regulator of mesenchymal cell numbers in the joint and thereby could be targeted to control the inflammatory and tissue-destructive feature of joints in arthritis. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.
    Annals of the Rheumatic Diseases 11/2014; · 9.27 Impact Factor
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    ABSTRACT: In addition to the redundancy of the receptors for the Fc portion of immunoglobulins, glycans result in potential ligands for a plethora of lectin receptors found in immune effector cells. Here we analysed the exposure of glycans containing fucosyl residues and the fucosylated tri-mannose N-type core by complexed native IgG in longitudinal serum samples of well-characterized patients with systemic lupus erythematosus. Consecutive serum samples of a cohort of 15 patients with systemic lupus erythematosus during periods of increased disease activity and remission were analysed. All patients fulfilled the 1982 American College of Rheumatology classification criteria. Sera of 15 sex- and age-matched normal healthy blood donors served as controls. The levels and type of glycosylation of complexed random IgG was measured with lectin enzyme-immunosorbent assays. After specifically gathering IgG complexes from sera, biotinylated lectins Aleuria aurantia lectin and Lens culinaris agglutinin were employed to detect IgG-associated fucosyl residues and the fucosylated tri-mannose N-glycan core, respectively. In sandwich-ELISAs, IgG-associated IgM, IgA, C1q, C3c and C-reactive protein (CRP) were detected as candidates for IgG immune complex constituents. We studied associations of the glycan of complexed IgG and disease activity according to the physician’s global assessment of disease activity and the systemic lupus erythematosus disease activity index 2000 documented at the moment of blood taking. Our results showed significantly higher levels of Aleuria aurantia lectin and Lens culinaris agglutinin binding sites exposed on IgG complexes of patients with systemic lupus erythematosus than on those of normal healthy blood donors. Disease activity in systemic lupus erythematosus correlated with higher exposure of Aleuria aurantia lectin-reactive fucosyl residues by immobilized IgG complexes. Top levels of Aleuria aurantia lectin-reactivity were found in samples taken during the highest activity of systemic lupus erythematosus. Our results show that native circulating IgG complexes from active systemic lupus erythematosus patients expose fucosyl residues and their glycan core is accessible to soluble lectins. Two putative mechanisms may contribute to the increased exposure of these glycans: (1) the canonical N-glycosylation site of the IgG-CH2 domain; (2) an IgG binding non-IgG molecule, like complement or C-reactive protein. In both cases the complexed IgG may be alternatively targeted to lectin receptors of effector cells, e.g. dendritic cells.
    Lupus 11/2014; · 2.48 Impact Factor
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    ABSTRACT: In agreement with other autoimmune diseases, systemic sclerosis (SSc) is associated with a strong sex bias. However, unlike lupus, the effects of sex on disease phenotype and prognosis are poorly known. Therefore, we aimed to determine sex effects on outcomes.
    Annals of the rheumatic diseases. 10/2014;
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    ABSTRACT: The cornerstone of humoral immunity is the differentiation of B cells into antibody-secreting plasma cells. This process is tightly controlled by a regulatory gene network centered on the transcriptional repressor B lymphocyte-induced maturation protein 1 (Blimp1). Proliferation of activated B cells is required to foster Blimp1 expression but needs to be terminated to avoid overshooting immune reactions. Activator protein 1 (AP-1) transcription factors become quickly up-regulated upon B cell activation. We demonstrate that Fra1, a Fos member of AP-1, enhances activation-induced cell death upon induction in activated B cells. Moreover, mice with B cell-specific deletion of Fra1 show enhanced plasma cell differentiation and exacerbated antibody responses. In contrast, transgenic overexpression of Fra1 blocks plasma cell differentiation and immunoglobulin production, which cannot be rescued by Bcl2. On the molecular level, Fra1 represses Blimp1 expression and interferes with binding of the activating AP-1 member c-Fos to the Blimp1 promoter. Conversely, overexpression of c-Fos in Fra1 transgenic B cells releases Blimp1 repression. As Fra1 lacks transcriptional transactivation domains, we propose that Fra1 inhibits Blimp1 expression and negatively controls plasma cell differentiation through binding to the Blimp1 promoter. In summary, we demonstrate that Fra1 negatively controls plasma cell differentiation by repressing Blimp1 expression.
    Journal of Experimental Medicine 10/2014; · 13.91 Impact Factor
  • Annals of the Rheumatic Diseases 10/2014; · 9.27 Impact Factor
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    ABSTRACT: BACKGROUND: The effect of vitamin D on colorectal adenomas may vary with regard to gender, localisation and histological type of the lesion. AIM: To define the role of vitamin D and gender in a Caucasian cohort of subjects undergoing screening colonoscopy after consideration of established risk factors. METHODS: One thousand five hundred and thirty-two subjects (813 males, 58.8 ± 9.7 years; 719 females, 59.7 ± 10.7 years) were allocated to tertiles of 25-hydroxyvitamin D3 [25(OH)D3 ] serum concentrations. The number, localisation, size and histology of the detected colonic lesions were recorded. RESULTS: Among men, no association was found between vitamin D and the total number, size and histological stage of adenomas at any site. In female subjects, less women with adenomas were found in the highest vitamin D tertile (N = 42/239; 17.2%) as compared to the low vitamin D group (N = 60/240; 25.0%; P = 0.035). In particular, the number of women with adenomas in the proximal colon was significantly lower in the highest tertile (N = 21/239, 8.8%) compared to the low vitamin D group (N = 41/240; 17.1%; P = 0.007). The rates at other sites were not different. The inverse association of vitamin D serum concentrations with the presence of adenomas in the proximal colon was maintained after adjustment for potential confounders. In 80 women on vitamin D supplementation, the rate of adenomas was lower compared to those not on supplementation (3/80; 3.8%; vs. 90/719; 12.5%; P = 0.016). CONCLUSIONS: A potential preventive effect of vitamin D on colorectal adenomas was found in the proximal colon in women. This observation is supported by further decrease of lesions in the proximal colon of women on vitamin D supplementation.
    Alimentary Pharmacology & Therapeutics 10/2014; · 4.55 Impact Factor
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    ABSTRACT: Objectives. Cardiomyopathy has emerged as a leading cause of death in systemic sclerosis (SSc). However, the pathogenesis of SSc-related cardiomyopathy is poorly understood and new therapies as well as platforms for testing are needed. Here, we aimed to characterize the histopathological features of cardiomyopathy in SSc patients and in common mouse models of SSc.Methods. The histopathological features in myocardial tissues of five patients with SSc and five controls matched for sex, age and cardiovascular risk factors were evaluated and compared to those of three common mouse models of SSc with systemic manifestations: Fra-2 transgenic (Fra-2 tg) mice, mice with sclerodermatous chronic Graft versus Host disease (cGvHD) and tight skin 1 (Tsk-1) mice.Results: Myocardial tissues of SSc patients without clinically manifest cardiac involvement showed endothelial cell apoptosis with reduced capillary density, perivascular inflammation, myofibroblast differentiation and accumulation of collagen. The cGvHD and Tsk-1 models displayed only selected features of SSc-related cardiomyopathy. However, myocardial tissue of Fra-2 tg mice mimicked all features of SSc-related cardiomyopathy and also demonstrated comparable vascular, inflammatory and fibrotic manifestations. Of note, the expression of Fra-2 was also increased in the myocardium of SSc patients.Conclusions. We demonstrate that all typical manifestations of SSc-related cardiomyopathy are mimicked by Fra-2 tg mice. Moreover, the overexpression of Fra-2 in the myocardium of SSc patients may suggest similar underlying pathomechanisms. Thus, Fra-2 tg mice might be a suitable preclinical model to study the mechanisms and therapeutic approaches of myocardial involvement in SSc. \ © 2014 American College of Rheumatology.
    Arthritis & Rheumatology. 10/2014;
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    ABSTRACT: Angiogenesis is an important pathophysiological process of chronic inflammation, especially in inflammatory arthritis. Quantitative measurement of changes in vascularization may improve the diagnosis and monitoring of arthritis. The aim of this work is the development of a 3D imaging and analysis framework for quantification of vascularization in experimental arthritis.
    BMC Musculoskeletal Disorders 09/2014; 15(1):298. · 1.90 Impact Factor
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    ABSTRACT: Objective: As single cytokine inhibition of e.g. TNFα or IL-6 produces clinically meaningful responses in only about half of RA patients, this study is designed to investigate whether combined inhibition of TNFα and IL-17 has additive/synergistic effects in suppression of mesenchymal cell activation in vitro and inflammation and tissue destruction in arthritis in vivo.Methods: Cultures of human fibroblast-like synoviocytes (FLS) were stimulated with TNFα, IL-17 or a combination of both. Single/combined neutralizing antibodies against TNFα and IL-17 were used to interrogate in vitro cytokine responses and in vivo development of arthritis, bone and cartilage destruction in TNFα-transgenic mice. Bi-specific anti-TNFα/IL-17 antibodies were designed and tested for their potential to block cytokine responses in human FLS.Results: TNFα and IL-17 had additive/synergistic effects in promoting IL-6, -8 and G-CSF as well as MMP production in FLS. Bi-specific anti-TNFα/IL-17 antibodies showed superior efficacy to block cytokine and chemokine responses in vitro. Furthermore, dual versus single inhibition of both cytokines using neutralizing antibodies was more effective in inhibiting the development of inflammation, bone and cartilage destruction in arthritic mice.Conclusion: Combined blockade of TNFα and IL-17 is more effective in inhibiting cytokine, chemokine and matrix enzyme responses from human mesenchymal cells and in blocking tissue destruction associated with arthritis and also showed positive impact on rebalance of bone homeostasis. Bi-specific anti-TNFα/IL-17 antibodies may have superior efficacy in the treatment of arthritis and may overcome the limited therapeutic responses of single cytokine neutralization. © 2014 American College of Rheumatology.
    Arthritis & Rheumatology. 09/2014;
  • Georg Schett, Aline Bozec
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    ABSTRACT: Osteoporosis results from an imbalance between bone resorption and bone formation. While bone resorption inhibitors are widely used to treat osteoporosis, stimulating bone formation is more challenging. Recently, McClung et al. (2014) found that neutralization of sclerostin, a potent inhibitor of bone formation, effectively increased bone mass in postmenopausal women.
    Cell Metabolism 09/2014; 20(3):394–395. · 16.75 Impact Factor
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    ABSTRACT: Sirt1 is a member of the sirtuin family of proteins. Sirt1 is a class III histone deacetylase with important regulatory roles in transcription, cellular differentiation, proliferation and metabolism. As aberrant epigenetic modifications have been linked to the pathogenesis of systemic sclerosis (SSc), we aimed to investigate the role of Sirt1 in fibroblast activation.
    Annals of the Rheumatic Diseases 09/2014; · 9.27 Impact Factor
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    ABSTRACT: To assess the efficacy and safety of tocilizumab (TCZ) plus methotrexate/placebo (MTX/PBO) over 2 years and the course of disease activity in patients who discontinued TCZ due to sustained remission.
    Annals of the Rheumatic Diseases 08/2014; · 9.27 Impact Factor
  • Zeitschrift fur Rheumatologie. 08/2014;
  • Bernhard Manger, Georg Schett
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    ABSTRACT: For patients that present with musculoskeletal symptoms, diagnostic procedures carried out by physicians and rheumatologists are primarily aimed at confirming or excluding the occurrence of primary rheumatic diseases. Another important trigger for musculoskeletal disease, however, is the presence of a tumour. Careful clinical investigation and knowledge of the gestalt of musculoskeletal syndromes related to respective tumour entities is of utmost importance for the diagnosis of paraneoplastic rheumatic diseases such as hypertrophic osteoarthropathy, paraneoplastic polyarthritis, RS3PE syndrome, palmar fasciitis and polyarthritis, cancer-associated myositis and tumour-induced osteomalacia. This places great responsibility on rheumatologists in diagnosing malignancies and referring the patient for effective treatment. The selective influence of tumours on musculoskeletal tissue is surprising and indicates that tumours alter tissues such as the periosteum, synovial membrane, subcutaneous connective tissue, fascia, muscles and bones by specific molecular processes. Some of the underlying mechanisms have been unravelled, providing valuable information on the physiologic and pathophysiologic roles of mediators such as vascular endothelial growth factor and fibroblast growth factor 23.
    Nature Reviews Rheumatology 08/2014; · 9.75 Impact Factor

Publication Stats

12k Citations
3,629.46 Total Impact Points

Institutions

  • 2007–2014
    • Universitätsklinikum Erlangen
      Erlangen, Bavaria, Germany
    • Justus-Liebig-Universität Gießen
      • Department of Internal Medicine
      Gieben, Hesse, Germany
  • 2006–2014
    • Friedrich-Alexander Universität Erlangen-Nürnberg
      • • Nikolaus-Fiebiger-Center of Molecular Medicine (NFZ)
      • • Department of Biology
      Erlangen, Bavaria, Germany
    • St George's, University of London
      Londinium, England, United Kingdom
  • 2013
    • University of Leeds
      • Leeds Institute of Rheumatic and Musculoskeletal Medicine
      Leeds, England, United Kingdom
  • 1996–2013
    • University of Innsbruck
      • Institute of Biochemistry
      Innsbruck, Tyrol, Austria
  • 2012
    • Nordic Bioscience
      København, Capital Region, Denmark
    • Ludwig Boltzmann Institute for Osteology
      Wien, Vienna, Austria
  • 2008–2012
    • University of Zurich
      • Center for Integrative Human Physiology
      Zürich, ZH, Switzerland
    • Technische Universität Dresden
      Dresden, Saxony, Germany
  • 2006–2012
    • Medizinische Universität Innsbruck
      • • Department für Innere Medizin
      • • Univ.-Klinik für Neurologie
      Innsbruck, Tyrol, Austria
  • 2011
    • National Academy of Sciences of Ukraine
      • Institute of Cell Biology
      Kharkiv, Kharkivs'ka Oblast', Ukraine
    • Università degli studi di Parma
      Parma, Emilia-Romagna, Italy
  • 2007–2011
    • University of Glasgow
      • • College of Medical, Veterinary and Life Sciences
      • • Institute of Infection, Immunity and Inflammation
      Glasgow, SCT, United Kingdom
  • 2010
    • Comenius University in Bratislava
      Presburg, Bratislavský, Slovakia
    • Centro Nacional de Investigaciones Oncológicas
      Madrid, Madrid, Spain
    • Detská fakultná nemocnica s poliklinikou v Bratislave
      Presburg, Bratislavský, Slovakia
  • 1998–2010
    • Medical University of Vienna
      • Department of Medicine II
      Wien, Vienna, Austria
  • 2009
    • University of California, San Diego
      • Division of Rheumatology, Allergy and Immunology
      San Diego, CA, United States
    • Universitätsklinikum Jena
      Jena, Thuringia, Germany
  • 2004–2006
    • Biomedical Sciences Research Center Alexander Fleming
      • Institute of Immunology
      Βάρη, Attica, Greece
  • 1998–2006
    • University of Vienna
      • Department of Internal Medicine III
      Wien, Vienna, Austria
  • 2000
    • Vienna General Hospital
      Wien, Vienna, Austria
  • 1995–2000
    • Austrian Academy of Sciences
      • Institut für Biomedizinische Alternsforschung
      Vienna, Vienna, Austria
  • 1998–1999
    • Ludwig Boltzmann Institute of Rheumatology and Balneology
      Wien, Vienna, Austria