[Corona vaccination under immunosuppression]. / Coronaimpfung unter Immunsuppression.

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) continues to play a major role as a severe and potentially fatal airway infection, especially in vulnerable patient groups. In view of the thin data situation on the influence of treatment and response to vaccination, at the beginning of the corona pandemic it was a major challenge to predict the tolerability and effectiveness in patients with inflammatory rheumatic diseases under immunomodulation or immunosuppression. In the meantime, numerous studies have addressed the questions of response and tolerability, at least for the COVID-19 vaccination. Even in the first months of the vaccination campaign, a small study on a single center cohort could show that apart from patients with B­cell depletion, all included patients showed a seroconversion after the first two vaccinations. This resulted in neither an increased occurrence of exacerbations of the underlying disease nor new autoimmune phenomena. Various studies have since then confirmed these data.

The influence of the SARS-CoV-2 lockdown on patients with inflammatory rheumatic diseases on their adherence to immunomodulatory medication: a cross sectional study over 3 months in Germany.

OBJECTIVES: To evaluate the influence of the SARS-CoV-2 pandemic on the adherence of patients with inflammatory rheumatic diseases (IRD) to their immunomodulatory medication during the three-month lockdown in Germany. METHODS: From 16th March until 15th June 2020, IRD patients from private practices and rheumatology departments were asked to answer a questionnaire addressing their behaviour with respect to their immunomodulating therapy. Eight private practices and nine rheumatology departments that included rheumatology primary care centres and university hospitals participated. A total of 4252 questionnaires were collected and evaluated. RESULTS: The majority of patients (54%) were diagnosed with RA, followed by psoriatic arthritis (14%), ankylosing spondylitis (10%), connective tissue diseases (12%) and vasculitides (6%). Most of the patients (84%) reported to continue their immunomodulatory therapy. Termination of therapy was reported by only 3% of the patients. The results were independent from the type of IRD, the respective immunomodulatory therapy and by whom the patients were treated (private practices vs rheumatology departments). Younger patients (<60 years) reported just as often as older patients to discontinue their therapy. CONCLUSION: The data show that most of the patients continued their therapy in spite of the pandemic. A significant change in behaviour with regard to their immunomodulatory therapy was not observed during the three months of observation. The results support the idea that the immediate release of recommendations of the German Society of Rheumatology were well received, supporting the well-established physician-patient relationship in times of a crisis.

[Paths to academic rheumatology]. / Weg in die akademische Rheumatologie.

BACKGROUND: The development of rheumatology into one of the most progressive medical disciplines is mainly based on the enormous scientific knowledge gained in recent decades. Physician scientists have played a substantial role in this development. With respect to the ongoing challenges, physician scientists will be urgently needed in the future. Therefore, young physicians need to be attracted to scientific research in rheumatology. OBJECTIVE: This article describes possible paths into academic rheumatology, highlights facilitators and barriers to a scientific career and discusses ideas for the recruitment of young scientists for rheumatology based on the existing literature. RESULTS AND DISCUSSION: It is without doubt that young scientists are urgently needed in rheumatology; however, the number of young physician scientists seems to be declining. The paths to academic rheumatology are manifold and variable but setting the course early on during medical school by science-oriented teaching, research internships and doctoral theses, appears to be advantageous. Favorable factors for the decision to pursue an academic career in rheumatology are enjoyment in research, recognition of research rotations for rheumatology training and improved career opportunities. The greatest barriers are considered to be the exemption from clinical duties as well as lack of experience with scientific methods and acquisition of research funding. Therefore, it is important to make potential scientists enthusiastic about the research underlying modern rheumatology and to encourage research during medical school in order to attract young people to academic rheumatology.

Mission statement from rheumatologists in the German Society of Rheumatology (DGRh e. V.) : We live rheumatology.

Systemic disease demands systemic thinkers. In this mission statement we define rheumatology, describe the role of the German Society of Rheumatology and the rheumatologist's spirit to their discipline. Rheumatologists are dedicated to improving the quality of life of their acute, chronic, and rehabilitative patients on the basis of up to date evidence and strong physician-patient relations. We think, act and interact systemically, scientifically, consistently, transparently, reliably, inclusively, innovatively and enthusiastically.

[Mission statement from rheumatologists in the German Society of Rheumatology (DGRh e. V.) : We live rheumatology. German version]. / Leitbild der Rheumatologinnen und Rheumatologen in der Deutschen Gesellschaft für Rheumatologie e. V. (DGRh e. V.) : Wir sind die Rheumatologie.

Systemic disease demands systemic thinkers. In this mission statement we define rheumatology, describe the role of the German Society of Rheumatology and the rheumatologist's spirit to their discipline. Rheumatologists are dedicated to improving the quality of life of their acute, chronic, and rehabilitative patients on the basis of up to date evidence and strong physician-patient relations. We think, act and interact systemically, scientifically, consistently, transparently, reliably, inclusively, innovatively and enthusiastically.

[SARS-CoV-2 & rheumatic disease : Consequences of the SARS-CoV-2 pandemic for patients with inflammatory rheumatic diseases. A comparison of the recommendations for action of rheumatological societies and risk assessment of different antirheumatic treatments]. / SARS-CoV-2 & Rheuma : Konsequenzen der SARS-CoV-2-Pandemie für Patienten mit entzündlich rheumatischen Erkrankungen. Ein Vergleich der Handlungsempfehlungen rheumatologischer Fachgesellschaften und Risikobewertung verschiedener antirheumatischer Therapien.

The recommendations of the German Society of Rheumatology (DGRh) update, which update and expand the guidance on the management of patients with inflammatory rheumatic diseases in view of SARS-CoV­2 created at the beginning of the COVID-19 pandemic, correspond in many points with the recommendations for action of the American (ACR) and European (EULAR) societies, but also differ in some points. Therefore, this article discusses the core recommendations of the DGRh update on the prevention of SARS-CoV-2/COVID-19, the risk assessment for inflammatory rheumatic diseases and the use of antirheumatic treatments in the context and in comparison to the ACR and EULAR recommendations, and provides an overview of the risk assessment of individual antirheumatic drugs.

[Hypereosinophilic syndrome and other rheumatic diseases with hypereosinophilia]. / Hypereosinophiles Syndrom und weitere rheumatische Erkrankungen mit Hypereosinophilie.

Among the eosinophilic diseases treated by rheumatologists other than eosinophilic granulomatosis with polyangiitis, there are further organ-related and systemic diseases with hypereosinophilia. Only the exact differential diagnostic demarcation of the diseases enables a pathogenetic oriented treatment. This article focuses on the hypereosinophilic syndromes. The potential differential diagnoses of Ig(immunoglobulin)G4-related disease, eosinophilic fasciitis and drug-induced vasculitis as well as eosinophilia-myalgia syndrome and toxic oil syndrome as historic drug-induced inflammatory rheumatic diseases are described and the clinical manifestations and treatment are summarized.

Autoantibodies, complement and type I interferon as biomarkers for personalized medicine in SLE.

Systemic lupus erythematosus (SLE) can be a mysterious disease, presenting with extremely divergent clinical phenotypes. Already, biomarkers are very helpful tools for diagnosis, assessment and monitoring of disease activity, differential diagnosis of clinical manifestations, prediction of the disease course and stratified therapy, and they hold the key to personalized medicine in SLE. We summarize the clinical information that can only be supplied by autoantibodies, complement components and interferon biomarkers in this diverse disease.

[Immunomodulatory therapy of autoimmune diseases : Quo vadis?]. / Immunmodulatorische Therapie bei Autoimmunerkrankungen : Quo vadis?

Immunomodulatory therapy is the gold standard in the treatment of autoimmune diseases. Increasing knowledge of the underlying mechanisms leading to autoimmunity enables patients to be treated with better and more specific therapies apart from the classical therapies, such as antimalarial drugs and glucocorticoids. For patients this nowadays means a great chance to receive optimized therapy. Numerous treatment options have been developed over the last decades and the development of new treatment approaches and strategies is still ongoing. This review gives an overview of immunomodulatory therapy approaches.

[Adult onset Still's disease with small vessel vasculitis]. / Adulter Morbus Still mit Kleingefäßvaskulitis.

This article presents a particularly severe case of adult onset Still's disease aggravated by small vessel vasculitis. A satisfactory therapy was concluded 1.5 years after onset of the disease. The small vessel vasculitis was difficult to treat: methotrexate (MTX), cyclophosphamide and rituximab were not sufficiently effective. Tocilizumab in combination with intravenous immunoglobulin (IVIG) induced remission and maintenance therapy was carried out with tocilizumab.

[Biologics therapy for systemic lupus erythematosus. Current situation]. / Biologikatherapie beim systemischen Lupus erythematodes. Aktueller Stand.

BACKGROUND: Improved understanding of the immunopathogenesis of systemic lupus erythematosus (SLE) has paved the way for new specific immune interventions for this inflammatory disease similar to those for rheumatoid arthritis and spondylarthritides. METHODS: New biologics were developed on this basis or are in the process of clinical development and open up new therapy options for patients. In this context belimumab is of particular importance. As an innovative biologic the monoclonal antibody against the cytokine BAFF/BLyS (belimumab) has been approved for the treatment of serologically active SLE. A number of other biologics against other cytokines are in the clinical development phase and appear to be promising for further improvement of the current therapeutic possibilities in SLE. This article addresses the current aspects of immune interventions with biologics for SLE and the specific challenges of this disease.

Association of ferritin antibodies with Takayasu arteritis.

Takayasu arteritis (TA) is difficult to diagnose because diagnostic biomarkers have not yet been established. In a previous study, we detected autoantibodies against the human ferritin heavy chain protein (HFC) in the sera of patients with giant cell arteritis (GCA) and/or polymyalgia rheumatica (PMR). The aim of this study is to evaluate the frequency of autoantibodies against HFC in TA. We established seven ELISA assays for the detection of autoantibodies against HFC. We used the full-length recombinant HFC expressed in Escherichia coli or one of six different HFC peptides as autoantigens: 1-18Aa (98.8 % purity), 19-45Aa (98.8 % purity), 52-78Aa (98.3 % purity), 79-104Aa (98.8 % purity), 105-143Aa (98.4 % purity) and 145-183Aa (98.5 % purity). We collected sera from 48 patients with TA, 36 patients with systemic lupus erythematosus (SLE), 35 patients with arteriosclerosis, 133 patients with febrile diseases, which are known to generate unspecific autoantibodies, and 50 blood donors, which served as controls. The best results were obtained using the ferritin peptides as antigens. By combining the results from the different ELISAs that detect autoantibodies against the HFC peptides 19-44A, 79-104A and 105-144A, we were able to detect ferritin peptide antibodies in 30/48 (62 %) of the TA patients. The frequency was lower than in early GCA and PMR (previous study showed up to 92 %). Positive results were observed in 0/50 (0 %) of the control blood donors, 10/36 (28 %) of the SLE patients, 4/35 (11 %) of the arteriosclerosis patients and 27/133 (20 %) of the fever patients. Considering the lack of biomarkers for TA, autoantibodies against HFC peptides could act as useful markers for TA.

HLA-DRhigh/CD27high plasmablasts indicate active disease in patients with systemic lupus erythematosus.

OBJECTIVES: Monitoring of peripheral B-cell subsets in patients with systemic lupus erythematosus (SLE) revealed an activity-related expansion of CD27(++)CD20(-)CD19(dim) Ig-secreting cells. A similar subset has also been identified 6-8 days after tetanus/diphtheria vaccination in normal individuals and in patients with infectious disease. METHODS: This subset was analysed further focussing on the HLA-DR surface expression in a cohort of 25 patients with SLE. RESULTS: This study revealed that 86% (range 59-97%) of CD27(++)CD20(-)CD19(dim) cells express high levels of HLA-DR, are also expanded in the bone marrow, and represent plasmablasts enriched with anti-dsDNA secreting cells. The remaining CD27(++)CD20(-)CD19(dim) cells were HLA-DR(low) and represent mature plasma cells. Importantly, HLA-DR(high) plasmablasts showed a closer correlation with lupus activity and anti-dsDNA levels than the previously identified CD27(++)CD20(-)CD19(dim) cells. CONCLUSION: HLA-DR(high)CD27(++)CD20(-)CD19(dim) plasmablasts represent a more precise indicator of lupus activity and suggest that there is an overproduction or lack of negative selection of these cells in SLE.

How to cope with pathogenic long-lived plasma cells in autoimmune diseases.

Recently, it has been shown that plasma cells secreting antibodies can be long lived and as such constitute an independent component of immunological memory. They are generated in the context of memory immune reactions and migrate to the bone marrow, where they persist for years and decades. Their survival is dependent on receiving distinct signals provided by cells forming a plasma cell survival niche. They also can migrate to, and survive in, inflamed tissue. In autoimmune diseases long-lived plasma cells secreting autoantibodies provide an as yet unmet therapeutic challenge, because they are resistant to conventional treatments, in particular to immunosuppression and anti-inflammatory drugs. They are eliminated by immunoablation with antithymocyte globulin. This may be the reason why immunoablation followed by reconstitution of the patient's immune system from haematopoietic stem cells induces long-term remissions in many patients with autoimmune diseases. However, more specific treatments for the elimination of autoreactive, long-lived plasma cells are needed, to avoid the complete temporary immunoincomptence induced by immunoablation, and to decipher the role of long-lived autoreactive plasma cells in human autoimmune diseases in more detail.