Lupus myocarditis receiving the rituximab therapy-a monocentric retrospective study

Measuring Human Memory B Cells in Autoimmunity Using Enzyme-Linked ImmunoSpot

The measurement of serum antibodies that specifically recognize self-antigens is a critical diagnostic in autoimmunity. A limitation of such an approach is sensitivity to detect the antibody, particularly when abundant self-antigens in the body may bind and sequester circulating specific antibodies. The presence of specific memory B cells (Bmem) may provide a more sensitive and robust indicator of an autoimmune response, as is suggested for certain anti-viral responses. B cell enzyme-linked ImmunoSpot (ELISPOT) is capable of detecting antigen-specific Bmem cells in blood at the single cell level, following stimulation of peripheral blood mononuclear cells (PBMCs) to expand and differentiate the Bmem cells into functional antibody-secreting cells (ASCs). While this assay has been widely utilized in infectious diseases and vaccination, detection is more difficult for autoantigens due to self-tolerance and specific tissue compartmentalization of immune responses, making autoantigen-specific B cells rare in the circulation. The cycles of re-activation of Bmem cells to become ASCs, that may reflect disease flare-ups in autoimmunity, are not well defined. For several autoimmune diseases (ADs), the targeting of B cells via depleting monoclonal antibodies has proven to be an effective treatment, where Bmem cells are likely being targeted. The measurement of autoantigen-reactive Bmem cells may aid in diagnosis and staging of clinical severity, or be a metric for efficacious treatments, thus providing an additional informative biomarker of ADs. How B cell ELISPOT has been utilized to characterize Bmem cells in human ADs is described here, including the advantages and disadvantages of the assay.

Understanding long COVID myocarditis: A comprehensive review

Infectious diseases are a cause of major concern in this twenty-first century. There have been reports of various outbreaks like severe acute respiratory syndrome (SARS) in 2003, swine flu in 2009, Zika virus disease in 2015, and Middle East Respiratory Syndrome (MERS) in 2012, since the start of this millennium. In addition to these outbreaks, the latest infectious disease to result in an outbreak is the SARS-CoV-2 infection. A viral infection recognized as a respiratory illness at the time of emergence, SARS-CoV-2 has wreaked havoc worldwide because of its long-lasting implications like heart failure, sepsis, organ failure, etc., and its significant impact on the global economy. Besides the acute illness, it also leads to symptoms months later which is called long COVID or post-COVID-19 condition. Due to its ever-increasing prevalence, it has been a significant challenge to treat the affected individuals and manage the complications as well. Myocarditis, a long-term complication of coronavirus disease 2019 (COVID-19) is an inflammatory condition involving the myocardium of the heart, which could even be fatal in the long term in cases of progression to ventricular dysfunction and heart failure. Thus, it is imperative to diagnose early and treat this condition in the affected individuals. At present, there are numerous studies which are in progress, investigating patients with COVID-19-related myocarditis and the treatment strategies. This review focuses primarily on myocarditis, a life-threatening complication of COVID-19 illness, and endeavors to elucidate the pathogenesis, biomarkers, and management of long COVID myocarditis along with pipeline drugs in detail.

Current Treatment Approach, Emerging Therapies and New Horizons in Systemic Lupus Erythematosus

Systemic lupus erythematosus (SLE), the prototype of systemic autoimmune diseases is characterized by extreme heterogeneity with a variable clinical course. Renal involvement may be observed and affects the outcome. Hydroxychloroquine should be administered to every lupus patient irrespective of organ involvement. Conventional immunosuppressive therapy includes corticosteroids, methotrexate, cyclophosphamide, mycophenolate mofetil, azathioprine, cyclosporine and tacrolimus. However, despite conventional immunosuppressive treatment, flares occur and broad immunosuppression is accompanied by multiple side effects. Flare occurrence, target organ involvement, side effects of broad immunosuppression and increased knowledge of the pathogenetic mechanisms involved in SLE pathogenesis as well as the availability of biologic agents has led to the application of biologic agents in SLE management. Biologic agents targeting various pathogenetic paths have been applied. B cell targeting agents have been used successfully. Belimumab, a B cell targeting agent, has been approved for the treatment of SLE. Rituximab, an anti-CD20 targeting agent is also used in SLE. Anifrolumab, an interferon I receptor-targeting agent has beneficial effects on SLE. In conclusion, biologic treatment is applied in SLE and should be further evaluated with the aim of a good treatment response and a significant improvement in quality of life.

Neuropsychiatric Lupus and Lupus Nephritis Successfully Treated with Combined IVIG and Rituximab: An Alternative to Standard of Care

Systemic lupus erythematosus (SLE) is a chronic autoimmune disease with unpredictable course and flares. The clinical manifestation can vary from mild to severe and life-threatening disease. Infection is the primary cause of mortality in hospitalized SLE patients. There is a paucity of evidence to support the co-management of SLE with major organ involvement and sepsis. We describe the clinical response of a 35-year-old male diagnosed with SLE; then, he developed severe sepsis and a flare of SLE with major organ involvement including lupus nephritis (LN), myocarditis, and neuropsychiatric systemic lupus erythematosus (NPSLE). Based on the patient’s condition, a treatment dilemma was encountered, and after a multidisciplinary meeting, the decision was made to use a combination of rituximab (RTX), intravenous immunoglobulin (IVIG), and pulse steroid. Shortly, the patient’s condition started to improve, and his symptoms were resolved. In conclusion, our clinical case suggests that combined RTX, IVIG, and pulse steroid seem to be effective and safe in achieving clinical response, thus representing a good choice for managing severe SLE flares in sepsis.

Management of non-renal manifestations of systemic lupus erythematosus: A systematic literature review for the APLAR consensus statements

The prevalence of systemic lupus erythematosus (SLE) is higher in Asians than Caucasians, with higher frequency of renal and other major organ manifestations that carry a poorer prognosis. The outcome of SLE is still unsatisfactory in many parts of the Asia Pacific region due to limited access to healthcare systems, poor treatment adherence and adverse reactions to therapies. The Asia Pacific League of Associations for Rheumatology (APLAR) SLE special interest group has recently published a set of consensus recommendation statements for the management of SLE in the Asia Pacific region. The current article is a supplement of systematic literature search (SLR) to the prevalence and treatment of non-renal manifestations of SLE in Asian patients.

Mycophenolate Mofetil Use in Severe Myocarditis Complicating Systemic Lupus

Cardiac involvement represents an increasingly frequent complication in systemic lupus, with pericarditis being the most classic cardiac manifestation. However, the most severe and fatal form seems to be myocarditis. We present the case of a patient with systemic lupus complicated by cardiogenic shock secondary to troponin-negative acute myopericarditis and successfully treated with mycophenolate mofetil and corticosteroid therapy. A 33-year-old woman with no past medical history presented with asthenia and inflammatory arthralgia. She was admitted in June 2021 for acute heart failure. Transthoracic cardiac ultrasound showed dilated cardiomyopathy with global hypokinesis (20-25% of ejection fraction) and right ventricular dysfunction without significant mitral and aortic valve disease. She had raised proBNP (pro-brain natriuretic peptide), low troponin, normochromic normocytic anemia at 10.4 g/dL, positive direct Coombs, lymphopenia at 460/mm3, serum creatinine at 23.9 mg/L, and proteinuria/creatininuria 2.48 g/g. Cardiac magnetic resonance imaging (CMR) suggested the diagnosis of myopericarditis. The etiological assessment did not identify an infectious, toxic, or medicinal cause. The clinical picture suggested the possibility of an autoimmune disease. The patient presented with lesions suggestive of cutaneous vasculitis, with oral ulcers with polyarthritis. The autoimmune workup showed anti-nuclear antibodies at 1:1,280, anti-native DNA antibodies at 210 IU/mL (normal < 10 IU/mL), and positive anti-SM Abs. The diagnosis of lupus myopericarditis complicated by cardiogenic shock was made, which was associated with acute renal impairment. The patient was initiated on heart failure medications along with corticosteroids and mycophenolate mofetil. On day 15, the left ventricular ejection fraction improved to 45-50%, with clinical improvement in signs of heart failure and general condition. The existence of myopericarditis without obvious etiology, especially when there are extra-cardiac signs such as skin and joint involvement, should lead us to look for systemic lupus in order to start etiological treatment in addition to cardiac medical treatment. Until now, there is no standard treatment for lupus myocarditis, but the use of mycophenolate mofetil seems to be a promising treatment.

Pediatric Lupus Presenting as Pulmonary Hypertension, Myocarditis, and Massive Pericardial Effusion in an 11-Year-Old Girl: A Case Report and Literature Review

Systemic lupus erythematosus (SLE) is an autoimmune disease that may cause vital organ damage. Although not rare for child-onset SLE to have cardiovascular or pulmonary involvement, myocarditis, and pulmonary hypertension are infrequent features and can be life-threatening. In this case report, we describe an 11-year-old girl with SLE who initially presented with fulminant myocarditis pulmonary hypertension, and massive pericardial effusion. Initial immunosuppressive therapy with methylprednisolone pulse therapy, and IVIG were administered, followed by cyclophosphamide, which was ultimately successful, with no residual pulmonary hypertension and no recurrence of myocarditis for over 3 years after the initial episode. Our case highlights the need for clinicians to be aware of systemic lupus erythematosus as a possible diagnostic entity in pediatric patients with severe myocarditis or pulmonary hypertension. Aggressive immunosuppressive therapy should be strongly considered in such cases, as it may lead to good short-term and long-term outcomes.

Cardiac Manifestations of Systemic Lupus Erythematous: An Overview of the Incidence, Risk Factors, Diagnostic Criteria, Pathophysiology and Treatment Options

Systemic lupus erythematosus (SLE) is a complex connective tissue disease that can potentially affect every organ of the human body. In some cases, SLE may present with diverse cardiac manifestations including pericarditis, myocarditis, valvular disease, atherosclerosis, thrombosis, and arrhythmias. Heart disease in SLE is associated with increased morbidity and mortality. It is unclear whether traditional treatments for coronary artery disease significantly impact mortality in this population. Current therapeutic agents for SLE include glucocorticoids, hydroxychloroquine, mycophenolate mofetil, azathioprine, methotrexate, cyclophosphamide, and B cell-directed therapies. This article will provide a comprehensive review and update on this important disease state.

B-Cell-Depleting Therapy Improves Myocarditis in Seronegative Eosinophilic Granulomatosis with Polyangiitis

Cardiac involvement is a major mortality cause in eosinophilic granulomatosis with polyangiitis (EGPA), requiring novel therapeutics to spare the use of cyclophosphamide with known cardiotoxicity. Despite the observed efficacy of B-cell-depleting therapy in myocarditis of seropositive microscopic polyangiitis, it remains to be elucidated in seronegative EGPA. A retrospective study was performed in 21 hospitalized active patients aged 20 to 70 years with five-factor score 1 or 2, eosinophil counts 10,034 ± 6641/μL and vasculitis scores 27 ± 6. Overt myocarditis was identified in 10 cases, at disease onset in 6 and relapse in 4, with endomyocarditis in 4 and myopericarditis in 4. Five seronegative and one seropositive patient received rituximab with an induction regimen 375 mg/m² weekly × 4 for refractory or relapse disease, and the same regimen for annual maintenance therapy. All cases had lower eosinophil counts, improved cardiac dysfunction and clinical remission with a relapse-free follow-up, 48 ± 15 months after the induction treatment. One seronegative endomyocarditis patient had eosinophilia and disease relapse with asthma attack and worsening cardiac insufficiency 24 months after induction, achieving clinical remission under anti-IL-5 therapy. Our findings suggest the suppression of IL-5-mediated eosinophilia as an action mechanism of B-cell-depleting therapy in seronegative EGPA myocarditis.

Effect of Biologics on Cardiovascular Inflammation: Mechanistic Insights and Risk Reduction

It is increasingly recognized that atherosclerosis and consequently cardiovascular disease (CVD) are closely linked with inflammatory processes. The latter is in the center of the pathogenic mechanism underlying autoimmune rheumatic diseases (ARD). It follows then, that optimal control of inflammation in ARDs may lead to a decrease of the accompanied CVD risk. Major trials (eg, CANTOS, CIRT), aimed at examining the possible benefits of immunomodulatory treatments in CVD, demonstrated conflicting results. On the other hand, substantial evidence is accumulating about the possible beneficial effects of biologic disease modifying antirheumatic drugs (bDMARDs) in patients with ARDs, particularly those with rheumatoid arthritis (RA). It seems that bDMARDs (some more than others) alter the lipid profile in RA patients but do not adversely affect, in most cases, the TC/HDL ratio. Favorable effects are noted for arterial stiffness and endothelial function. This is reflected in the lower risk for CVD events, seen in observational studies of RA patients treated with bDMARDs. It should be stressed that more data exist for the TNF-inhibitors than for other bDMARDs, such as tocilizumab, abatacept and rituximab. As regards the spondyloarthropathies (SpA), data are less robust. For TNF-inhibitors, effects appear to be on par with those seen in RA but no conclusions can be drawn for newer biologic drugs used in SpA (eg, IL-17 blockers). Finally, there is accumulating evidence for a beneficial effect of immunosuppressive treatment in cardiac inflammation and function in several ARDs. Introduction of newer therapeutic options in clinical practice seem to have a positive impact on CVD in the setting of ARD. This is probably due to better control of inflammation, but direct improvement in vascular pathology is also a valid hypothesis. Most data are derived from observational studies and, therefore, randomized controlled trials are needed to assess the possible favorable effect of bDMARDs on CVD outcomes.

The spectrum of lupus myocarditis: from asymptomatic forms to cardiogenic shock

Lupus myocarditis is a serious, potentially deadly disease. When it presents as an acute or fulminant myocarditis in a patient without an established diagnosis of lupus, lupus as an etiology of the condition is not commonly suspected. Meanwhile, it has a distinct treatment which may be lifesaving. Review of the literature can shed more light as current management is mostly based on clinical experience and case reports rather than randomized control trials. In this review we are discussing this diagnostic entity, focusing on cardiogenic shock as a manifestation of lupus myocarditis, and discussing management including aggressive immunosuppression, mechanical circulatory support, and cardiac transplantation.

Efficacy of immunosuppressive therapy in myocarditis: A 30-year systematic review and meta analysis

AIMS

Myocarditis is an inflammation of the heart muscle, due to infectious, toxic or autoimmune causes. Literature reported controversial results in relation to the effect of immunosuppression (IS)/immunomodulation (IM). We aimed at assessing the effect of IS/IM by meta analysis.

METHODS AND RESULTS

Using the P.R.I.S.M.A. approach, two researchers searched for relevant studies on PubMed, Embase, and the Central Registry of Controlled Trials of the Cochrane Library. Proposed MeSH terms were: "immunotherapy OR immune therapy OR immune modeling OR Immunosuppressive Agents" AND "combination OR combined with OR plus" AND "myocarditis OR cardiomyopathies OR inflammatory cardiomyopathy". The language was restricted to English. Reference lists of included articles and those relevant to the topic were hand searched for the identification of additional, potentially relevant articles. The cutoff date was from 1987 until 30th Nov 2019. Reported survival or mortality events or change of left ventricular ejection fraction (LVEF) after IS/IT were primary outcomes of the study; in addition, improvement of New York Heart Association class, follow-up biopsy (Bx) findings, viral genome clearance on Bx and recurrence of myocarditis were recorded if reported. Statistical analysis was conducted using Review Manager 5.3; 5452 studies were screened, of these 73 were assessed for eligibility, including 8 randomized control studies, 26 retrospective studies, 2 prospective studies and 1 case control study, 34 case reports and 2 case series. In prospective studies, the difference in mortality between the IS and control groups tended to be lower in the combined IS groups (12.5% vs. 18.2%) (95% CI of odds ratio 0.7(0.3, 1.64)) and the pooled difference of the increase of LVEF between the IS and control groups tended to be higher in the combined IS groups (95% CI 7.26 (-2.29, 16.81)). In retrospective studies, the difference of survival between the IS and control group was significantly in favor of IS (95%CI Hazard ratio 0.82(0.69, 0.96)).

CONCLUSIONS

A tailored IS may be considered in myocarditis, depending on the phase of the disease, and the type of underlying autoimmune or immune-mediated form.

Management of cardiovascular disease in patients with systemic lupus erythematosus

INTRODUCTION

SLE is increasingly recognized as an important risk factor for cardiovascular disease. Premature CAD and several other cardiac manifestations are resulting in significant morbidity and premature death among young and older adults. There is a considerable unmet need for developing specific guidelines toward the primary and secondary prevention of cardiovascular disease in SLE patients.

AREAS COVERED

The authors describe the prevalence of various cardiovascular manifestations, associated with traditional and lupus-specific risk factors. They summarize the evidence behind various nonpharmacological and pharmacological options such as cardiac medications, antimalarials, anti-inflammatory, and immunosuppressant medications.

EXPERT OPINION

There is considerable literature claiming that the traditional Framingham score used to calculate the risk in the general population would not clearly predict the 10-year risk among SLE patients as they do not include lupus-specific risk factors such as accelerated inflammation, immunometabolic changes, thrombosis, vasospasm, vasculitis, and endothelial dysfunction into account. Identifying potential risk factors among SLE patients and treating hyperlipidemia regardless of their risk scores may be the first step in reducing mortality. Blocking lupus-specific inflammatory pathways by targeting validated biomarkers of pathogenesis has great future potential and more studies are needed on their cardiovascular benefits.

Therapeutic strategies for virus-negative myocarditis: a comprehensive review

Virus-negative or autoimmune myocarditis(VNM) is an inflammatory disease affecting the myocardium that may occur as a distinct disease with exclusive cardiac involvement, or in the context of systemic autoimmune or inflammatory disorders. The pathogenesis of VNM involves both innate and acquired immunity and is not completely elucidated: an early immune-mediated pathogenic process lead to subacute and chronic stages and eventually results in tissue remodeling, fibrosis, contractile dysfunction, dilated cardiomyopathy and arrhythmic burden, accounting for a dismal prognosis. Treatment interventions effectively curbing the acute inflammatory process at an early stage can prevent late cardiac remodeling and improve patient's outcome. The mainstay of treatment of VNM remains symptomatic therapy of heart failure and arrhythmia, while the use of immunosuppressive treatments has long been considered controversial until recently, and strategies effectively targeting the inflammatory and immune-mediated substrate of the disease remain elusive. Only steroids and azathioprine have been tested in clinical trials, and nowadays represent the therapy of choice. A substantial proportion of patients are resistant to first line strategies, suggesting that some critical inflammatory mechanisms are not responsive to conventional immunosuppression with steroids and azathioprine, or experience drug-related adverse events. Thus, second-line targeted therapeutic strategies to treat VNM are eagerly awaited. Recent data on the pathogenic mechanisms underlying myocardial inflammation are paving the way to novel, promising treatment strategies for myocarditis, which could reformulate future treatment strategies for VNM. In this review, we summarize the current therapeutic opportunities, beyond corticosteroids, to treat VNM, including conventional and biologic immunosuppressive drugs and cytokine blocking agents.

Successful use of plasma exchange in fulminant lupus myocarditis coexisting with pneumonia: A case report

BACKGROUND

Fulminant lupus myocarditis is a rare but fatal manifestation of systemic lupus erythematosus. Aggressive immunosuppressive treatments are important in its successful management. However, they can significantly damage the immunity and are associated with a considerable risk of infection development and spread. We present a rare and complicated case of a 20-year-old female diagnosed with fulminant lupus myocarditis accompanied by pneumonia. The patient was successfully treated with plasma exchange (PE) for fulminant lupus myocarditis.

CASE SUMMARY

A 20-year-old Chinese woman presented to the Hematology Department complaining of fatigue and knee pain. Blood test showed anemia and thrombocytopenia. On the second day of hospitalization, she was transferred to the ICU due to dyspnea and hypotension. Autoimmune profiles showed hypocomplementemia and positive antinuclear antibodies. Computer tomography showed an enlarged heart and pneumonia. Ultrasound revealed an enlarged heart with a low left ventricular ejection fraction. Fulminant lupus myocarditis with cardiogenic shock was initially considered. Due to the accompanying pneumonia, aggressive immunosuppression was contraindicated. Her cardiac function remained critical after the initial therapy of intravenous immunoglobulin and corticosteroids at a conventional dose, but she responded well to later PE therapy plus corticosteroids administration. The patient fully recovered with normal cardiac function.

CONCLUSION

This case indicates that PE is a valuable treatment choice without adverse effects of immunosuppression in patients with fulminant lupus myocarditis and coexisting infection.

Management of Myocarditis-Related Cardiomyopathy in Adults

Myocarditis is generally a mild and self-limited consequence of systemic infection of cardiotropic viruses. However, patients can develop a temporary or permanent impairment of cardiac function including acute cardiomyopathy with hemodynamic compromise or severe arrhythmias. In this setting, specific causes of inflammation are associated with variable risks of death and transplantation. Recent translational studies suggest that treatments tailored to specific causes of myocarditis may impact clinical outcomes when added to guideline-directed medical care. This review summarizes recent advances in translational research that influence the utility of endomyocardial biopsy for the management of inflammatory cardiomyopathies. Emerging therapies for myocarditis based on these mechanistic hypotheses are entering clinical trials and may add to the benefits of established heart failure treatment.

Early short-term ivabradine treatment in new-onset acute systolic heart failure and sinus tachycardia patients with inflammatory rheumatic disease

Acute heart failure (AHF) is a common complication of inflammatory rheumatic disease (IRD) and usually coexists with tachycardia. Ivabradine, a direct sinus node inhibitor, which was proven to have favorable effects in patients with chronic HF (CHF), has not been sufficiently evaluated in AHF patients regarding its efficacy and safety. The present study sought to explore the effectiveness of early short-term ivabradine treatment in new-onset AHF and concurrent sinus tachycardia in patients with IRD. A total of 12 consecutive patients with IRD, who had new-onset AHF and concurrent sinus tachycardia, were prescribed ivabradine and were retrospectively recruited. Standard medication therapy for AHF was also administered. The heart rate (HR), left ventricular ejection fraction (LVEF), biomarkers of HF and New York Heart Association (NYHA) classification score were compared prior to and after ivabradine treatment. After 48 h of treatment with ivabradine, the mean resting HR decreased from 118.0±13.8 to 83.3±7.3 bpm (P<0.001). Transthoracic echocardiography indicated a significant improvement in the LVEF on an average of 2 weeks after ivabradine prescription when compared with the baseline evaluation (51.2±8.4 vs. 38.0±9.0%; P<0.001). In addition, ivabradine treatment resulted in significantly decreased N-terminal proB-type natriuretic peptide (4,900±3,672 vs. 16,806±16,130 pg/ml; P=0.045) and improvement of the NYHA classification score (2.3±0.6 vs. 3.5±0.5; P<0.001) at 2 weeks when compared with the baseline. Overall, the results of the present study suggested that early use of ivabradine is safe in IRD patients with new-onset AHF and enhances the sinus rate reduction, which may improve heart function.