1
|
Quartuccio L, Bortoluzzi A, Scirè CA, Marangoni A, Del Frate G, Treppo E, Castelnovo L, Saccardo F, Zani R, Candela M, Fraticelli P, Mazzaro C, Renoldi P, Scaini P, Filippini DA, Visentini M, Scarpato S, Giuggioli D, Mascia MT, Sebastiani M, Zignego AL, Lauletta G, Fiorilli M, Casato M, Ferri C, Pietrogrande M, Pioltelli PE, De Vita S, Monti G, Galli M. Management of mixed cryoglobulinemia with rituximab: evidence and consensus-based recommendations from the Italian Study Group of Cryoglobulinemia (GISC). Clin Rheumatol 2023; 42:359-370. [PMID: 36169798 PMCID: PMC9873783 DOI: 10.1007/s10067-022-06391-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 09/06/2022] [Accepted: 09/21/2022] [Indexed: 01/28/2023]
Abstract
Cryoglobulinemic vasculitis (CV) or mixed cryoglobulinemic syndrome (MCS) is a systemic small-vessel vasculitis characterized by the proliferation of B-cell clones producing pathogenic immune complexes, called cryoglobulins. It is often secondary to hepatitis C virus (HCV), autoimmune diseases, and hematological malignancies. CV usually has a mild benign clinical course, but severe organ damage and life-threatening manifestations can occur. Recently, evidence in favor of rituximab (RTX), an anti-CD 20 monoclonal antibody, is emerging in CV: nevertheless, questions upon the safety of this therapeutic approach, especially in HCV patients, are still being issued and universally accepted recommendations that can help physicians in MCS treatment are lacking. A Consensus Committee provided a prioritized list of research questions to perform a systematic literature review (SLR). A search was made in Medline, Embase, and Cochrane library, updated to August 2021. Of 1227 article abstracts evaluated, 27 studies were included in the SLR, of which one SLR, 4 RCTs, and 22 observational studies. Seventeen recommendations for the management of mixed cryoglobulinemia with rituximab from the Italian Study Group of Cryoglobulinemia (GISC) were developed to give a valuable tool to the physician approaching RTX treatment in CV.
Collapse
Affiliation(s)
- Luca Quartuccio
- Unit of Rheumatology, Department of Medicine (DAME), University of Udine, ASUFC, Udine, Italy.
| | - Alessandra Bortoluzzi
- Section of Rheumatology, Department of Medical Sciences, University of Ferrara and Azienda Ospedaliera, Universitaria Di Ferrara, Cona, FE, Italy
| | | | - Antonio Marangoni
- Section of Rheumatology, Department of Medical Sciences, University of Ferrara and Azienda Ospedaliera, Universitaria Di Ferrara, Cona, FE, Italy
| | - Giulia Del Frate
- Unit of Rheumatology, Department of Medicine (DAME), University of Udine, ASUFC, Udine, Italy
| | - Elena Treppo
- Unit of Rheumatology, Department of Medicine (DAME), University of Udine, ASUFC, Udine, Italy
| | - Laura Castelnovo
- Department of Internal Medicine, Hospital of Legnano, Legnano, Italy
| | | | | | | | - Paolo Fraticelli
- Ematologia Ed Immunologia Clinica, Clinica Medica Generale, University of Ancona, Ancona, Italy
| | - Cesare Mazzaro
- Clinical Experimental Onco-Haematology Unit, Centro di Riferimento Oncologico di Aviano (CRO) IRCCS, 33081, Aviano, Italy
| | - Piero Renoldi
- UOS Di Immunologia Clinica, Ospedale S. Carlo Borromeo, Milan, Italy
| | | | | | - Marcella Visentini
- Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | | | - Dilia Giuggioli
- Department of Internal Medicine, Rheumatology Unit, University of Modena and Reggio Emilia, Modena, Italy
| | - Maria Teresa Mascia
- Department of Internal Medicine, Rheumatology Unit, University of Modena and Reggio Emilia, Modena, Italy
| | - Marco Sebastiani
- Department of Internal Medicine, Rheumatology Unit, University of Modena and Reggio Emilia, Modena, Italy
| | | | | | - Massimo Fiorilli
- Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Milvia Casato
- Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Clodoveo Ferri
- Department of Internal Medicine, Rheumatology Unit, University of Modena and Reggio Emilia, Modena, Italy
| | - Maurizio Pietrogrande
- Department of Medicine, Surgery and Dentistry, Medicina Interna, Policlinico San Marco of Zingonia, University of Milan, Milan, Italy
| | | | - Salvatore De Vita
- Unit of Rheumatology, Department of Medicine (DAME), University of Udine, ASUFC, Udine, Italy
| | - Giuseppe Monti
- Medicina Interna, Ospedale Di Saronno, AO Busto Arsizio, Italy
| | - Massimo Galli
- Infectious Disease Unit, L. Sacco, Department of Clinical Sciences, University of Milan, Milan, Italy
| |
Collapse
|
2
|
Regulatory T cells and systemic vasculitis. Curr Opin Rheumatol 2023; 35:25-30. [PMID: 36508306 DOI: 10.1097/bor.0000000000000915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PURPOSE OF THE REVIEW Emerging data suggest that regulatory T-cells (Treg) alterations play a major role in systemic vasculitis pathophysiology. We performed a systematic review of recent advances in the role of Treg and interleukin (IL)-10 in the pathogenesis and treatment of systemic vasculitis, including giant cell arteritis (GCA), Takayasu arteritis, Behçet's disease, antineutrophil cytoplasm antibodies (ANCA) associated vasculitis (AAV), and cryoglobulinemia associated vasculitis. RECENT FINDINGS Emerging data suggest that Treg deficiencies are disease-specific, affecting distinct pathways in distinct vasculitides. Decreased peripheral blood frequencies of Treg are described in all vasculitis when compared to healthy donors. Altered Treg functions are reported in GCA, Takayasu arteritis, AAV, and Behçet's disease with different mechanisms proposed. Treatment with biologics, and sometimes other immunosuppressants, may restore Treg frequencies and/or immune activity with significant differences in active disease or disease in remission in several systemic vasculitis. IL-10 is elevated in GCA, AAV, cryoglobulinemia associated vasculitis. In Behçet's disease, IL-10 is decreased in peripheral blood and elevated in saliva. In Takayasu arteritis, IL-10 levels were essentially elevated in patients' vessel wall. Several new therapeutic approaches targeting Treg and Il-10 (low dose IL-2, CAR Treg…) are developed to treat patients with systemic vasculitis. SUMMARY Treg and IL-10 play a central role in the regulation of inflammation in vasculitis and new targeting approaches are emerging.
Collapse
|
3
|
Advancing Biologic Therapy for Refractory Autoimmune Hepatitis. Dig Dis Sci 2022; 67:4979-5005. [PMID: 35147819 DOI: 10.1007/s10620-021-07378-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 12/27/2021] [Indexed: 01/05/2023]
Abstract
Biologic agents may satisfy an unmet clinical need for treatment of refractory autoimmune hepatitis. The goals of this review are to present the types and results of biologic therapy for refractory autoimmune hepatitis, indicate opportunities to improve and expand biologic treatment, and encourage comparative clinical trials. English abstracts were identified in PubMed by multiple search terms. Full-length articles were selected for review, and secondary and tertiary bibliographies were developed. Rituximab (monoclonal antibodies against CD20 on B cells), infliximab (monoclonal antibodies against tumor necrosis factor-alpha), low-dose recombinant interleukin 2 (regulatory T cell promoter), and belimumab (monoclonal antibodies against B cell activating factor) have induced laboratory improvement in small cohorts with refractory autoimmune hepatitis. Ianalumab (monoclonal antibodies against the receptor for B cell activating factor) is in clinical trial. These agents target critical pathogenic pathways, but they may also have serious side effects. Blockade of the B cell activating factor or its receptors may disrupt pivotal B and T cell responses, and recombinant interleukin 2 complexed with certain interleukin 2 antibodies may selectively expand the regulatory T cell population. A proliferation-inducing ligand that enhances T cell proliferation and survival is an unevaluated, potentially pivotal, therapeutic target. Fully human antibodies, expanded target options, improved targeting precision, more effective delivery systems, and biosimilar agents promise to improve efficacy, safety, and accessibility. In conclusion, biologic agents target key pathogenic pathways in autoimmune hepatitis, and early experiences in refractory disease encourage clarification of the preferred target, rigorous clinical trial, and comparative evaluations.
Collapse
|
4
|
Schulz E, Hodl I, Forstner P, Hatzl S, Sareban N, Moritz M, Fessler J, Dreo B, Uhl B, Url C, Grisold AJ, Khalil M, Kleinhappl B, Enzinger C, Stradner MH, Greinix HT, Schlenke P, Steinmetz I. CD19+IgD+CD27- Naïve B Cells as Predictors of Humoral Response to COVID 19 mRNA Vaccination in Immunocompromised Patients. Front Immunol 2021; 12:803742. [PMID: 34950155 PMCID: PMC8688243 DOI: 10.3389/fimmu.2021.803742] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 11/19/2021] [Indexed: 01/04/2023] Open
Abstract
Immunocompromised patients are considered high-risk and prioritized for vaccination against COVID-19. We aimed to analyze B-cell subsets in these patients to identify potential predictors of humoral vaccination response. Patients (n=120) suffering from hematologic malignancies or other causes of immunodeficiency and healthy controls (n=79) received a full vaccination series with an mRNA vaccine. B-cell subsets were analyzed prior to vaccination. Two independent anti-SARS-CoV-2 immunoassays targeting the receptor-binding domain (RBD) or trimeric S protein (TSP) were performed three to four weeks after the second vaccination. Seroconversion occurred in 100% of healthy controls, in contrast to 67% (RBD) and 82% (TSP) of immunocompromised patients, while only 32% (RBD) and 22% (TSP) achieved antibody levels comparable to those of healthy controls. The number of circulating CD19+IgD+CD27- naïve B cells was strongly associated with antibody levels (ρ=0.761, P<0.001) and the only independent predictor for achieving antibody levels comparable to healthy controls (OR 1.07 per 10-µL increase, 95%CI 1.02-1.12, P=0.009). Receiver operating characteristic analysis identified a cut-off at ≥61 naïve B cells per µl to discriminate between patients with and without an optimal antibody response. Consequently, measuring of naïve B cells in immunocompromised hematologic patients could be useful in predicting their humoral vaccination response.
Collapse
Affiliation(s)
- Eduard Schulz
- Division of Hematology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Isabel Hodl
- Division of Rheumatology and Immunology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Patrick Forstner
- Institute of Hygiene, Microbiology and Environmental Medicine, Medical University of Graz, Graz, Austria
| | - Stefan Hatzl
- Division of Hematology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Nazanin Sareban
- Department of Blood Group Serology and Transfusion Medicine, Medical University of Graz, Graz, Austria
| | - Martina Moritz
- Department of Blood Group Serology and Transfusion Medicine, Medical University of Graz, Graz, Austria
| | - Johannes Fessler
- Institute of Immunology and Pathophysiology, Medical University of Graz, Graz, Austria
| | - Barbara Dreo
- Division of Rheumatology and Immunology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Barbara Uhl
- Division of Hematology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Claudia Url
- Department of Blood Group Serology and Transfusion Medicine, Medical University of Graz, Graz, Austria
| | - Andrea J. Grisold
- Institute of Hygiene, Microbiology and Environmental Medicine, Medical University of Graz, Graz, Austria
| | - Michael Khalil
- Department of Neurology, Medical University of Graz, Graz, Austria
| | - Barbara Kleinhappl
- Institute of Hygiene, Microbiology and Environmental Medicine, Medical University of Graz, Graz, Austria
| | | | - Martin H. Stradner
- Division of Rheumatology and Immunology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Hildegard T. Greinix
- Division of Hematology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Peter Schlenke
- Department of Blood Group Serology and Transfusion Medicine, Medical University of Graz, Graz, Austria
| | - Ivo Steinmetz
- Institute of Hygiene, Microbiology and Environmental Medicine, Medical University of Graz, Graz, Austria
| |
Collapse
|
5
|
Becker PD, Ratnasothy K, Sen M, Peng Q, Romano M, Bazoer J, Suvitra E, Stout A, Hylton SG, Dorling A, Lechler RI, Smyth LA, Lombardi G. B lymphocytes contribute to indirect pathway T cell sensitization via acquisition of extracellular vesicles. Am J Transplant 2021; 21:1415-1426. [PMID: 32483894 DOI: 10.1111/ajt.16088] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 05/15/2020] [Accepted: 05/21/2020] [Indexed: 01/25/2023]
Abstract
B cells have been implicated in transplant rejection via antibody-mediated mechanisms and more recently by presenting donor antigens to T cells. We have shown in patients with chronic antibody-mediated rejection that B cells control the indirect T cell alloresponses. To understand more about the role of B cells as antigen-presenting cells for CD4+ T cell with indirect allospecificity, B cells were depleted in C57BL/6 mice, using an anti-CD20 antibody, prior to receiving MHC class I-mismatched (Kd ) skin. The absence of B cells at the time of transplantation prolonged skin graft survival. To study the mechanisms behind this observation, T cells with indirect allospecificity were transferred in mice receiving a Kd skin transplant. T cell proliferation was markedly inhibited in the absence of recipient B cells, suggesting that B cells contribute to indirect pathway sensitization. Furthermore, we have shown that a possible way in which B cells present alloantigens is via acquisition of MHC-peptide complexes. Finally, we demonstrate that the addition of B cell depletion to the transfer of regulatory T cells (Tregs) with indirect alloresponse further prolonged skin graft survival. This study supports an important role for B cells in indirect T cell priming and further emphasizes the advantage of combination therapies in prolonging transplant survival.
Collapse
Affiliation(s)
- Pablo D Becker
- MRC Centre for Transplantation, Peter Gorer Department of Immunobiology, School of Immunology & Microbial Sciences, King's College London, London, SE1 9RT, UK
| | - Kulachelvy Ratnasothy
- MRC Centre for Transplantation, Peter Gorer Department of Immunobiology, School of Immunology & Microbial Sciences, King's College London, London, SE1 9RT, UK
| | - Monica Sen
- MRC Centre for Transplantation, Peter Gorer Department of Immunobiology, School of Immunology & Microbial Sciences, King's College London, London, SE1 9RT, UK.,School of Health, Sports and Biosciences, University of East London, London, UK
| | - Qi Peng
- MRC Centre for Transplantation, Peter Gorer Department of Immunobiology, School of Immunology & Microbial Sciences, King's College London, London, SE1 9RT, UK
| | - Marco Romano
- MRC Centre for Transplantation, Peter Gorer Department of Immunobiology, School of Immunology & Microbial Sciences, King's College London, London, SE1 9RT, UK
| | - Jordan Bazoer
- School of Health, Sports and Biosciences, University of East London, London, UK
| | - Erik Suvitra
- School of Health, Sports and Biosciences, University of East London, London, UK
| | - Anas Stout
- School of Health, Sports and Biosciences, University of East London, London, UK
| | - Shannon G Hylton
- School of Health, Sports and Biosciences, University of East London, London, UK
| | - Anthony Dorling
- MRC Centre for Transplantation, Department of Inflammation Biology, Faculty of Life Sciences & Medicine, King's College London, London, UK
| | - Robert I Lechler
- MRC Centre for Transplantation, Peter Gorer Department of Immunobiology, School of Immunology & Microbial Sciences, King's College London, London, SE1 9RT, UK
| | - Lesley A Smyth
- MRC Centre for Transplantation, Peter Gorer Department of Immunobiology, School of Immunology & Microbial Sciences, King's College London, London, SE1 9RT, UK.,School of Health, Sports and Biosciences, University of East London, London, UK
| | - Giovanna Lombardi
- MRC Centre for Transplantation, Peter Gorer Department of Immunobiology, School of Immunology & Microbial Sciences, King's College London, London, SE1 9RT, UK
| |
Collapse
|
6
|
Zignego AL, Marri S, Gragnani L. Impact of direct acting antivirals on hepatitis c virus-related cryoglobulinemic syndrome. Minerva Gastroenterol (Torino) 2021; 67:218-226. [PMID: 33793154 DOI: 10.23736/s2724-5985.21.02848-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
INTRODUCTION Mixed cryoglobulinemia (MC) is a B-cell lymphoproliferative disorder largely attributable to HCV infection. MC clinical manifestations are determined by systemic vasculitis of low/medium sized vessels (mixed cryoglobulinemia syndrome or cryoglobulinemic vasculitis and CV) caused by the deposition of cryoglobulins in blood vessels. EVIDENCE ACQUISITION A systematic review was performed via the Medline and Scopus databases to evaluate studies concerning CV treatment with new direct antiviral agents (DAAs) and their effect on the syndrome. EVIDENCE SYNTHESIS The introduction of Interferon-free protocols has led to more evident positive effects than those observed in the treatment of C hepatitis/cirrhosis. In fact, IFN-free, DAA-based therapy minimised side effects permitting the treatment of previously contraindicated patients and led to a particularly high SVR rate and to a clinical/immunological response in the majority of patients, even if at different levels in different patients, from restitutio ad integrum to partial response. In view of the clearly positive evolution in CV management, the persistence of CV manifestations, in partial or non-responders continues to pose problems in the clinical approach to patients who represent a new condition that is still not completely known. CONCLUSIONS Results of DAAs-based therapy strongly confirm the use of anti-HCV therapy as the first-line therapeutic option in CV patients. However, growing evidence of a possible persistence or late relapse of CV suggests the need for longer/more accurate post-DAAs follow-ups as well as biomarkers that are capable of predicting the risk of clinical relapse/persistence to allow for the design of rational post-HCV eradication clinical flow-charts.
Collapse
Affiliation(s)
- Anna L Zignego
- MASVE Interdepartmental Hepatology Center, Department of Experimental and clinical Medicine, Center for Research and Innovation CRIAMASVE, University of Florence, Firenze, Italy -
| | - Silvia Marri
- MASVE Interdepartmental Hepatology Center, Department of Experimental and clinical Medicine, Center for Research and Innovation CRIAMASVE, University of Florence, Firenze, Italy
| | - Laura Gragnani
- MASVE Interdepartmental Hepatology Center, Department of Experimental and clinical Medicine, Center for Research and Innovation CRIAMASVE, University of Florence, Firenze, Italy
| |
Collapse
|
7
|
Increased Frequencies of Switched Memory B Cells and Plasmablasts in Peripheral Blood from Patients with ANCA-Associated Vasculitis. J Immunol Res 2020; 2020:8209737. [PMID: 33313327 PMCID: PMC7719539 DOI: 10.1155/2020/8209737] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 10/23/2020] [Accepted: 11/04/2020] [Indexed: 11/17/2022] Open
Abstract
B cells are thought to play a central role in the pathogenesis of antineutrophil cytoplasmic antibody- (ANCA-) associated vasculitis (AAV). ANCAs have been proposed to cause vasculitis by activating primed neutrophils to damage small blood vessels. We studied a cohort of AAV patients of which a majority were in remission and diagnosed with granulomatosis with polyangiitis (GPA). Using flow cytometry, the frequencies of CD19+ B cells and subsets in peripheral blood from 106 patients with AAV and 134 healthy controls were assessed. B cells were divided into naive, preswitch memory, switched memory, and exhausted memory cells. Naive and switched memory cells were further subdivided into transitional cells and plasmablasts, respectively. In addition, serum concentrations of immunoglobulin A, G, and M were measured and clinical data were retrieved. AAV patients displayed, in relation to healthy controls, a decreased frequency of B cells of lymphocytes (5.1% vs. 8.3%) and total B cell number. For the subsets, a decrease in percentage of transitional B cells (0.7% vs. 4.4%) and expansions of switched memory B cells (22.3% vs. 16.5%) and plasmablasts (0.9% vs. 0.3%) were seen. A higher proportion of B cells was activated (CD95+) in patients (20.6% vs. 10.3%), and immunoglobulin levels were largely unaltered. No differences in B cell frequencies between patients in active disease and remission were observed. Patients in remission with a tendency to relapse had, compared to nonrelapsing patients, decreased frequencies of B cells (3.5% vs. 6.5%) and transitional B cells (0.1% vs. 1.1%) and an increased frequency of activated exhausted memory B cells (30.8% vs. 22.3%). AAV patients exhibit specific changes in frequencies of CD19+ B cells and their subsets in peripheral blood. These alterations could contribute to the autoantibody-driven inflammatory process in AAV.
Collapse
|
8
|
Rossi D, Sciascia S, Fenoglio R, Ferro M, Baldovino S, Kamgaing J, Ventrella F, Kalikatzaros I, Viziello L, Solfietti L, Barreca A, Roccatello D. Cryoglobulinemic glomerulonephritis: clinical presentation and histological features, diagnostic pitfalls and controversies in the management. State of the art and the experience on a large monocentric cohort treated with B cell depletion therapy. Minerva Med 2020; 112:162-174. [PMID: 33198442 DOI: 10.23736/s0026-4806.20.07076-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Cryoglobulinemia is defined by the presence of immunoglobulins having the following characteristics: forming a gel when temperature is <37 °C, precipitate in a reversible manner in the serum, and redissolve after rewarming. The presence of both polyclonal IgG and monoclonal IgM (type II), or of polyclonal IgG and polyclonal IgM (type III) identifies the mixed cryoglobulinemia (MC). The identification of the Hepatitis C virus (HCV) infection in most of the cases previously defined as "essential" represented a cornerstone in the understanding the pathogenesis of this condition. The picture of MC comprehends heterogeneous clinical presentations: from arthralgias, mild palpable purpura, fatigue to severe vasculitis features with skin necrotic pattern, peripheral neuropathy and, less commonly, lungs, central nervous system, gastrointestinal tract, and heart involvement. The kidney represents the most common organ presentation, and the presence of glomerulonephritis is a key element when considering prognosis. We discuss the clinical presentation and histological features, diagnostic pitfalls, and controversies in the management of patients with cryoglobulinemic glomerulonephritis, with a special focus on reporting our experience in treating patients with B cell depletion therapy.
Collapse
Affiliation(s)
- Daniela Rossi
- Unit of Nephrology and Dialysis (ERKnet Member), Department of Clinical and Biological Sciences, Center of Research of Immunopathology and Rare Diseases, Coordinating Center of the Network for Rare Diseases of Piedmont and Aosta Valley, San Giovanni Bosco Hospital, University of Turin, Turin, Italy
| | - Savino Sciascia
- Unit of Nephrology and Dialysis (ERKnet Member), Department of Clinical and Biological Sciences, Center of Research of Immunopathology and Rare Diseases, Coordinating Center of the Network for Rare Diseases of Piedmont and Aosta Valley, San Giovanni Bosco Hospital, University of Turin, Turin, Italy
| | - Roberta Fenoglio
- Unit of Nephrology and Dialysis (ERKnet Member), Department of Clinical and Biological Sciences, Center of Research of Immunopathology and Rare Diseases, Coordinating Center of the Network for Rare Diseases of Piedmont and Aosta Valley, San Giovanni Bosco Hospital, University of Turin, Turin, Italy
| | - Michela Ferro
- Unit of Nephrology and Dialysis (ERKnet Member), Department of Clinical and Biological Sciences, Center of Research of Immunopathology and Rare Diseases, Coordinating Center of the Network for Rare Diseases of Piedmont and Aosta Valley, San Giovanni Bosco Hospital, University of Turin, Turin, Italy
| | - Simone Baldovino
- Unit of Nephrology and Dialysis (ERKnet Member), Department of Clinical and Biological Sciences, Center of Research of Immunopathology and Rare Diseases, Coordinating Center of the Network for Rare Diseases of Piedmont and Aosta Valley, San Giovanni Bosco Hospital, University of Turin, Turin, Italy
| | - Joelle Kamgaing
- Unit of Nephrology and Dialysis (ERKnet Member), Department of Clinical and Biological Sciences, Center of Research of Immunopathology and Rare Diseases, Coordinating Center of the Network for Rare Diseases of Piedmont and Aosta Valley, San Giovanni Bosco Hospital, University of Turin, Turin, Italy
| | - Federica Ventrella
- Unit of Nephrology and Dialysis (ERKnet Member), Department of Clinical and Biological Sciences, Center of Research of Immunopathology and Rare Diseases, Coordinating Center of the Network for Rare Diseases of Piedmont and Aosta Valley, San Giovanni Bosco Hospital, University of Turin, Turin, Italy
| | - Ileana Kalikatzaros
- Unit of Nephrology and Dialysis (ERKnet Member), Department of Clinical and Biological Sciences, Center of Research of Immunopathology and Rare Diseases, Coordinating Center of the Network for Rare Diseases of Piedmont and Aosta Valley, San Giovanni Bosco Hospital, University of Turin, Turin, Italy
| | - Lucia Viziello
- Unit of Nephrology and Dialysis (ERKnet Member), Department of Clinical and Biological Sciences, Center of Research of Immunopathology and Rare Diseases, Coordinating Center of the Network for Rare Diseases of Piedmont and Aosta Valley, San Giovanni Bosco Hospital, University of Turin, Turin, Italy
| | - Laura Solfietti
- Unit of Nephrology and Dialysis (ERKnet Member), Department of Clinical and Biological Sciences, Center of Research of Immunopathology and Rare Diseases, Coordinating Center of the Network for Rare Diseases of Piedmont and Aosta Valley, San Giovanni Bosco Hospital, University of Turin, Turin, Italy
| | - Antonella Barreca
- Unit of Nephrology and Dialysis (ERKnet Member), Department of Clinical and Biological Sciences, Center of Research of Immunopathology and Rare Diseases, Coordinating Center of the Network for Rare Diseases of Piedmont and Aosta Valley, San Giovanni Bosco Hospital, University of Turin, Turin, Italy.,Patology Division, A.O.U. Città della Salute e della Scienza, Turin, Italy
| | - Dario Roccatello
- Unit of Nephrology and Dialysis (ERKnet Member), Department of Clinical and Biological Sciences, Center of Research of Immunopathology and Rare Diseases, Coordinating Center of the Network for Rare Diseases of Piedmont and Aosta Valley, San Giovanni Bosco Hospital, University of Turin, Turin, Italy -
| |
Collapse
|
9
|
Abstract
PURPOSE OF REVIEW The present review focuses on the new therapeutic opportunities offered by the combination of biological drugs, mainly Rituximab, with direct-acting antiviral agents (DAAs). RECENT FINDINGS Hepatitis C virus (HCV) is known to be the etiologic agent in the majority of patients with mixed cryoglobulinemia syndrome. Clinical research has been focused on antiviral drugs and, more recently, on the new, highly potent DAAs. New DAAs assure sustained virologic response (SVR) rates greater than 90% with relief of mild-to-moderate symptoms. SUMMARY Mixed cryoglobulinemia may present with multiorgan vasculitis involving kidneys, joints, skin, and peripheral nerves. Data on DAAs efficacy in HCV-associated cryoglobulinemic vasculitis are disappointing possibly because of the inability of these drugs to suppress the immune-mediated process once it has been triggered. Immunosuppression has often been employed in the past as a first-line therapy in cryoglobulinemic vasculitis despite the potential risk of the infection exacerbation. However, more manageable Rituximab-based therapeutic approaches have been more recently used without increase of viral load. Rituximab substantially changed the outcome of HCV-associated cryoglobulinemic vasculitis by providing long-term remission. A combination schedule of DAAs and Rituximab may result in eradication of both cryoglobulinemic vasculitis and HCV infection.
Collapse
|
10
|
Inshasi JS, Almadani A, Fahad SA, Noori SI, Alsaadi T, Shakra M, Shatila AO, Zein TM, Boshra A. High-efficacy therapies for relapsing-remitting multiple sclerosis: implications for adherence. An expert opinion from the United Arab Emirates. Neurodegener Dis Manag 2020; 10:257-266. [PMID: 32438857 DOI: 10.2217/nmt-2020-0016] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The number of disease-modifying treatments (DMDs) for relapsing-remitting multiple sclerosis has increased. DMDs differ not only in their efficacy and safety/tolerability, but also in the treatment burden of, associated with their initiation, route/frequency of administration, maintenance treatment and monitoring. High-efficacy DMDs bring the prospect of improved suppression of relapses and progression of disability, but may have serious safety issues, and burdensome long-term monitoring. Studies of patient preferences in this area have focused on side effects, efficacy and route of administration. Adherence to DMDs is often suboptimal in relapsing-remitting multiple sclerosis and there is a need to understand more about how the complex therapeutic and administration profiles of newer DMDs interact with these barriers to support optimal adherence to therapy.
Collapse
Affiliation(s)
- Jihad Said Inshasi
- MS Section, Rashid Hospital & Dubai Medical College, Dubai Health Authority (DHA), Dubai, UAE
| | - Abubaker Almadani
- Rashid Hospital & Dubai Medical College, Dubai health Authority (DHA), Dubai, UAE
| | - Sarmad Al Fahad
- Neurology Department, Neurospinal Hospital, Baghdad Medical College, Dubai, UAE
| | | | - Taoufik Alsaadi
- Neurology Department, American Center for Psychiatry & Neurology, Dubai, UAE
| | - Mustafa Shakra
- Department of Neurology, Sheikh Khalifa Medical City, Abu Dhabi, UAE
| | | | | | | |
Collapse
|
11
|
Young C, Brink R. Germinal centers and autoantibodies. Immunol Cell Biol 2020; 98:480-489. [PMID: 32080878 DOI: 10.1111/imcb.12321] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 02/16/2020] [Accepted: 02/18/2020] [Indexed: 12/24/2022]
Abstract
Preventing self-reactive lymphocytes from participating in effector responses is fundamental to maintaining immunological self-tolerance and circumventing autoimmunity. A range of complementary mechanisms are known to act upon the primary B- and T-cell repertoires to this effect, eliminating or silencing lymphocytes expressing self-reactive antigen receptors generated through V(D)J recombination in early lymphoid precursors. In the case of B cells, secondary diversification of antigen receptor repertoire by somatic hypermutation (SHM) provides an additional challenge, especially because this occurs in germinal center (GC) B cells that are actively responding to antigen and primed for differentiation into antibody-producing plasma cells. While it is clear that self-tolerance mechanisms do act to prevent antibody production by self-reactive GC B cells, it is also apparent that most pathogenic autoantibodies carry somatic mutations and so have derived from a GC response. Recent advances in the analysis of autoantibody-producing cells associated with human autoimmune diseases together with insights gained from animal models have increased our understanding of the relationships between GCs, SHM and autoantibody production. Here we discuss these developments and focus in particular on how they have illuminated the genesis and pathogenesis of one archetypal autoantibody, rheumatoid factor.
Collapse
Affiliation(s)
- Clara Young
- Immunology Division, Garvan Institute of Medical Research, Darlinghurst, NSW, 2010, Australia.,St Vincent's Clinical School, UNSW Sydney, Darlinghurst, NSW, Australia
| | - Robert Brink
- Immunology Division, Garvan Institute of Medical Research, Darlinghurst, NSW, 2010, Australia.,St Vincent's Clinical School, UNSW Sydney, Darlinghurst, NSW, Australia
| |
Collapse
|
12
|
Shao Q, Gao H. Progress in interleukin-2 therapy for rheumatic immune diseases by regulating the immune balance of T cells. Scand J Immunol 2019; 90:e12822. [PMID: 31494958 DOI: 10.1111/sji.12822] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 08/26/2019] [Accepted: 08/29/2019] [Indexed: 12/12/2022]
Abstract
Breaking the balance between effector T cells, including Th17 (T helper cell 17) cells, and regulatory T cells (Tregs) is a key link in the pathogenesis of rheumatic immune diseases, which lead to a new concept of regulating immune balance in the treatment of rheumatic immune diseases. Interleukin (IL)-2 can effectively regulate the differentiation, development and functional activity of regulatory T cells, thus restoring the immune balance between regulatory T cells and effector T cells. Therefore, low-dose IL-2 has been used in the treatment of rheumatic immune diseases, and it has become a promising new choice to achieve therapeutic purpose by regulating the immune balance of T cell. Here, we discuss the role of T cells immune imbalance in the pathogenesis of rheumatic immune diseases and the mechanism of IL-2 in the treatment of rheumatic immune diseases by regulating T cells immune balance and summarize the relevant clinical trials.
Collapse
Affiliation(s)
- Qin Shao
- Department of Rheumatology, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, China
| | - Hongyan Gao
- Department of Rheumatology, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, China
| |
Collapse
|
13
|
Néel A, Bucchia M, Néel M, Tilly G, Caristan A, Yap M, Rimbert M, Bruneau S, Cadoux M, Agard C, Hourmant M, Godmer P, Brouard S, Bressollette C, Hamidou M, Josien R, Fakhouri F, Degauque N. Dampening of CD8+ T Cell Response by B Cell Depletion Therapy in Antineutrophil Cytoplasmic Antibody-Associated Vasculitis. Arthritis Rheumatol 2019; 71:641-650. [PMID: 30375745 DOI: 10.1002/art.40766] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 10/25/2018] [Indexed: 12/13/2022]
Abstract
OBJECTIVE To compare the effects of rituximab (RTX) and conventional immunosuppressants (CIs) on CD4+ T cells, Treg cells, and CD8+ T cells in antineutrophil cytoplasmic antibody-associated vasculitis (AAV). METHODS A thorough immunophenotype analysis of CD4+, Treg, and CD8+ cells from 51 patients with AAV was performed. The production of cytokines and chemokines by CD8+ T cells stimulated in vitro was assessed using a multiplex immunoassay. The impact of AAV B cells on CD8+ T cell response was assessed using autologous and heterologous cocultures. RESULTS CD4+ and Treg cell subsets were comparable among RTX-treated and CI-treated patients. In contrast, within the CD8+ T cell compartment, RTX, but not CIS, reduced CD45RA+CCR7- (TEMRA) cell frequency (from a median of 39% before RTX treatment to 10% after RTX treatment [P < 0.01]) and efficiently dampened cytokine/chemokine production (e.g., the median macrophage inflammatory protein 1α level was 815 pg/ml in patients treated with RTX versus 985 pg/ml in patients treated with CIs versus 970 pg/ml in those with active untreated AAV [P < 0.01]). CD8+ T cell subsets cocultured with autologous B cells produced more proinflammatory cytokines in AAV patients than in controls (e.g., for tumor necrosis factor-producing effector memory CD8+ T cells: 14% in AAV patients versus 9.2% in controls [P < 0.05]). In vitro disruption of AAV B cell-CD8+ T cell cross-talk reduced CD8+ T cell cytokine production, mirroring the reduced CD8+ response observed ex vivo after RTX treatment. CONCLUSION The disruption of a pathogenic B cell/CD8+ T cell axis may contribute to the efficacy of RTX in AAV. Further studies are needed to determine the value of CD8+ T cell immunomonitoring in B cell-targeted therapies.
Collapse
Affiliation(s)
- Antoine Néel
- INSERM UMR1064, Université de Nantes and CHU Nantes, Nantes, France
| | - Marie Bucchia
- INSERM UMR1064, Université de Nantes and CHU Nantes, Nantes, France
| | - Mélanie Néel
- INSERM UMR1064, Université de Nantes and CHU Nantes, Nantes, France
| | - Gaelle Tilly
- INSERM UMR1064, Université de Nantes and CHU Nantes, Nantes, France
| | - Aurélie Caristan
- INSERM UMR1064, Université de Nantes and CHU Nantes, Nantes, France
| | | | - Marie Rimbert
- INSERM UMR1064, Université de Nantes and CHU Nantes, Nantes, France
| | - Sarah Bruneau
- INSERM UMR1064, Université de Nantes and CHU Nantes, Nantes, France
| | - Marion Cadoux
- INSERM UMR1064, Université de Nantes and CHU Nantes, Nantes, France
| | | | - Maryvonne Hourmant
- INSERM UMR1064, Université de Nantes and CHU Nantes, Nantes France, and Centre Hospitalier Bretagne Atlantique, Vannes, France
| | - Pascal Godmer
- Centre Hospitalier Bretagne Atlantique, Vannes, France
| | - Sophie Brouard
- INSERM UMR1064, Université de Nantes and CHU Nantes, Nantes, France
| | | | - Mohamed Hamidou
- INSERM UMR1064, Université de Nantes and CHU Nantes, Nantes, France
| | - Regis Josien
- INSERM UMR1064, Université de Nantes and CHU Nantes, Nantes, France
| | - Fadi Fakhouri
- INSERM UMR1064, Université de Nantes and CHU Nantes, Nantes, France
| | - Nicolas Degauque
- INSERM UMR1064, Université de Nantes and CHU Nantes, Nantes, France
| |
Collapse
|
14
|
Sharabi A, Tsokos MG, Ding Y, Malek TR, Klatzmann D, Tsokos GC. Regulatory T cells in the treatment of disease. Nat Rev Drug Discov 2018; 17:823-844. [DOI: 10.1038/nrd.2018.148] [Citation(s) in RCA: 174] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
15
|
Roccatello D, Sciascia S, Rossi D, Solfietti L, Fenoglio R, Menegatti E, Baldovino S. The challenge of treating hepatitis C virus-associated cryoglobulinemic vasculitis in the era of anti-CD20 monoclonal antibodies and direct antiviral agents. Oncotarget 2018; 8:41764-41777. [PMID: 28454112 PMCID: PMC5522247 DOI: 10.18632/oncotarget.16986] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Accepted: 03/09/2017] [Indexed: 12/30/2022] Open
Abstract
Mixed cryoglobulinemia syndrome (MC) is a systemic vasculitis involving kidneys, joints, skin, and peripheral nerves. While many autoimmune, lymphoproliferative, and neoplastic disorders have been associated with this disorder, hepatitis C virus (HCV) is known to be the etiologic agent in the majority of patients. Therefore, clinical research has focused on anti-viral drugs and, more recently, on the new, highly potent Direct-acting Antiviral Agents (DAAs). These drugs assure sustained virologic response (SVR) rates >90%. Nevertheless, data on their efficacy in patients with HCV-associated cryoglobulinemic vasculitis are disappointing, possibly due to the inability of the drugs to suppress the immune-mediated process once it has been triggered.Despite the potential risk of exacerbation of the infection, immunosuppression has traditionally been regarded as the first-line intervention in cryoglobulinemic vasculitis, especially if renal involvement is severe. Biologic agents have raised hopes for more manageable therapeutic approaches, and Rituximab (RTX), an anti CD20 monoclonal antibody, is the most widely used biologic drug. It has proved to be safer than conventional immunosuppressants, thus substantially changing the natural history of HCV-associated cryoglobulinemic vasculitis by providing long-term remission, especially with intensive regimens.The present review focuses on the new therapeutic opportunities offered by the combination of biological drugs, mainly Rituximab, with DAAs.
Collapse
Affiliation(s)
- Dario Roccatello
- Department of Clinical and Biological Sciences, Center of Research of Immunopathology and Rare Diseases, Coordinating Center of the Network for Rare Diseases of Piedmont and Aosta Valley, S. Giovanni Bosco Hospital and University of Turin, Turin, Italy.,Nephrology and Dialysis Unit, S. Giovanni Bosco Hospital and University of Turin, Turin, Italy
| | - Savino Sciascia
- Department of Clinical and Biological Sciences, Center of Research of Immunopathology and Rare Diseases, Coordinating Center of the Network for Rare Diseases of Piedmont and Aosta Valley, S. Giovanni Bosco Hospital and University of Turin, Turin, Italy.,Nephrology and Dialysis Unit, S. Giovanni Bosco Hospital and University of Turin, Turin, Italy
| | - Daniela Rossi
- Department of Clinical and Biological Sciences, Center of Research of Immunopathology and Rare Diseases, Coordinating Center of the Network for Rare Diseases of Piedmont and Aosta Valley, S. Giovanni Bosco Hospital and University of Turin, Turin, Italy
| | - Laura Solfietti
- Department of Clinical and Biological Sciences, Center of Research of Immunopathology and Rare Diseases, Coordinating Center of the Network for Rare Diseases of Piedmont and Aosta Valley, S. Giovanni Bosco Hospital and University of Turin, Turin, Italy
| | - Roberta Fenoglio
- Nephrology and Dialysis Unit, S. Giovanni Bosco Hospital and University of Turin, Turin, Italy
| | - Elisa Menegatti
- Department of Clinical and Biological Sciences, Center of Research of Immunopathology and Rare Diseases, Coordinating Center of the Network for Rare Diseases of Piedmont and Aosta Valley, S. Giovanni Bosco Hospital and University of Turin, Turin, Italy
| | - Simone Baldovino
- Department of Clinical and Biological Sciences, Center of Research of Immunopathology and Rare Diseases, Coordinating Center of the Network for Rare Diseases of Piedmont and Aosta Valley, S. Giovanni Bosco Hospital and University of Turin, Turin, Italy
| |
Collapse
|
16
|
Mathur P, Emmanuel B, Sneller M, Zhang X, Poonia B, Kottilil S. Recovery of hepatitis C specific T-cell responses after rituximab therapy in hepatitis C mixed cryoglobulinemic vasculitis. J Med Virol 2018; 90:936-941. [PMID: 29236302 DOI: 10.1002/jmv.25002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Accepted: 12/02/2017] [Indexed: 12/28/2022]
Abstract
Mixed cryoglobulinemic vasculitis is associated with monoclonal B cell expansion in patients with chronic hepatitis C (HCV) infection. B cell depletion therapy using rituximab, a CD20 monoclonal antibody, has been successful in achieving remission from symptomatic disease. This study investigated whether B cell depletion therapy has an impact on activation of HCV-specific T cell phenotype and function. Nineteen patients with Hepatitis C mixed cryoglobulinemic vasculitis were treated with 4 cycles of rituximab (375 mg/m2 ) and variables were measured 6 months after therapy. Using flow cytometry and Enzyme-Linked Immunospot assay, the number of activated and tissue-like B cells and number of T cells expressing Programmed cell death protein 1 (PD-1), T-cell immunoglobulin and mucin-domain containing-3 (TIM-3), and multiple cytokines were measured before and after rituximab therapy. B cell depletion therapy is associated with a significant (P < 0.0001) decline in peripheral T cells with exhaustive phenotype, from pre-therapy to post-therapy-of rituximab (mean ± standard error): CD4+ (16.9 ± 0.9% to 8.9 ± 1.0%) and CD8+ (6.8 ± 0.6% to 3.0 ± 0.5%) T cells expressing PD-1 and CD4+ (11.0 ± 1.0% to 6.1 ± 0.8%) and CD8+ (12.7 ± 0.7% to 6.4 ± 0.4%) T cells expressing TIM-3. In addition, there was a significantly higher percentage of peripheral CD8+ T cells responding to HCV peptide stimulation in vitro secreting IFN-γ (4.55 ± 0.3 to 9.6 ± 1.0 IFN-γ/106 PBMCs, P < 0.0001), and more than one cytokine (1.3 ± 0.1% to 3.8 ± 0.2%, P < 0.0001) after therapy compared to pre-therapy. B cell depletion therapy results in recovery of T cell exhaustion and function in patients with HCV cryoglobulinemic vasculitis.
Collapse
Affiliation(s)
- Poonam Mathur
- Division of Clinical Care and Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, Maryland
| | - Benjamin Emmanuel
- Division of Clinical Care and Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, Maryland
| | - Michael Sneller
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland
| | - Xiaozhen Zhang
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland
| | - Bhawna Poonia
- Division of Clinical Care and Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, Maryland
| | - Shyamasundaran Kottilil
- Division of Clinical Care and Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, Maryland.,Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland
| |
Collapse
|
17
|
Abstract
Regulatory T cells (Tregs) are immunosuppressive cells of the immune system that control autoimmune reactivity. Tregs also respond during immune reactions to infectious agents in order to limit immunopathological damage from potent effectors such as CD8+ cytolytic T lymphocytes. We have used the Friend virus (FV) model of retroviral infection in mice to investigate how viral infections induce Tregs. During acute FV infection, there is significant activation and expansion of thymus-derived (natural) Tregs that suppress virus-specific CD8+ T cell responses. Unlike conventional T cells, the responding Tregs are not virus specific, so the mechanisms that induce their expansion are of great interest. We now show that B cells provide essential signals for Treg expansion during FV infection. Treg responses are greatly diminished in B cell-deficient mice but can be restored by adoptive transfers of B cells at the time of infection. The feeble Treg responses in B cell-deficient mice are associated with enhanced virus-specific CD8+ T cell responses and accelerated virus control during the first 2 weeks of infection. In vitro experiments demonstrated that B cells promote Treg activation and proliferation through a glucocorticoid-induced receptor superfamily member 18 (GITR) ligand-dependent mechanism. Thus, B cells play paradoxically opposing roles during FV infection. They provide proliferative signals to immunsosuppressive Tregs, which slows early virus control, and they also produce virus-specific antibodies, which are essential for long-term virus control. When infectious agents invade a host, numerous immunological mechanisms are deployed to limit their replication, neutralize their spread, and destroy the host cells harboring the infection. Since immune responses also have a strong capacity to damage host cells and tissues, their magnitude, potency, and duration are under regulatory control. Regulatory T cells are an important component of this control, and the mechanisms that induce them to respond and exert immunosuppressive regulation are of great interest. In the current report, we show that B cells, the cells responsible for making pathogen-specific antibodies, are also involved in promoting the expansion of regulatory T cells during a retroviral infection. In vitro studies demonstrated that they do so via stimulation of the Tregs through interactions between cell surface molecules: GITR interactions with its ligand (GITRL) on B cells and GITR on regulatory T cells. These findings point the way toward therapeutics to better treat infections and autoimmune diseases.
Collapse
|
18
|
Rosenzwajg M, Languille E, Debiec H, Hygino J, Dahan K, Simon T, Klatzmann D, Ronco P. B- and T-cell subpopulations in patients with severe idiopathic membranous nephropathy may predict an early response to rituximab. Kidney Int 2017; 92:227-237. [DOI: 10.1016/j.kint.2017.01.012] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 01/03/2017] [Accepted: 01/05/2017] [Indexed: 12/26/2022]
|
19
|
Relapse of nephrotic syndrome during post-rituximab peripheral blood B-lymphocyte depletion. Clin Exp Nephrol 2017; 22:110-116. [DOI: 10.1007/s10157-017-1415-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 04/16/2017] [Indexed: 12/21/2022]
|
20
|
Zignego AL, Ramos-Casals M, Ferri C, Saadoun D, Arcaini L, Roccatello D, Antonelli A, Desbois AC, Comarmond C, Gragnani L, Casato M, Lamprecht P, Mangia A, Tzioufas AG, Younossi ZM, Cacoub P. International therapeutic guidelines for patients with HCV-related extrahepatic disorders. A multidisciplinary expert statement. Autoimmun Rev 2017; 16:523-541. [PMID: 28286108 DOI: 10.1016/j.autrev.2017.03.004] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Accepted: 02/26/2017] [Indexed: 02/06/2023]
Abstract
Hepatitis C virus (HCV) is both hepatotrophic and lymphotropic virus that causes liver as well extrahepatic manifestations including cryoglobulinemic vasculitis, the most frequent and studied condition, lymphoma, and neurologic, cardiovascular, endocrine-metabolic or renal diseases. HCV-extrahepatic manifestations (HCV-EHMs) may severely affect the overall prognosis, while viral eradication significantly reduces non-liver related deaths. Different clinical manifestations may coexist in the same patient. Due to the variety of HCV clinical manifestations, a multidisciplinary approach along with appropriate therapeutic strategies are required. In the era of interferon-free anti-HCV treatments, international recommendations for the therapeutic management of HCV-EHMs are needed. This implies the need to define the best criteria to use antivirals and/or other therapeutic approaches. The present recommendations, based on qualified expert experience and specific literature, will focus on etiological (antiviral) therapies and/or traditional pathogenetic treatments that still maintain their therapeutic utility.
Collapse
Affiliation(s)
- Anna Linda Zignego
- Interdepartmental Center for Systemic Manifestations of Hepatitis Viruses (MaSVE), Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy.
| | - Manuel Ramos-Casals
- Department of Autoimmune Diseases, ICMiD Josep Font Autoimmune Lab, CELLEX-IDIBAPS, Hospital Clinic, Barcelona, Spain
| | - Clodoveo Ferri
- Chair and Rheumatology Unit, Medical School, University of Modena and Reggio Emilia, Azienda Ospedaliero-Universitaria, Policlinico di Modena, 41124 Modena, Italy
| | - David Saadoun
- Sorbonne University, UPMC Univ Paris 06, UMR 7211, and Inflammation-Immunopathology-Biotherapy Department (DHU i2B), Paris, France; INSERM, UMR S 959, Paris, France; CNRS, FRE3632, Paris, France; AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Department of Internal Medicine and Clinical Immunology, Paris, France
| | - Luca Arcaini
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Dario Roccatello
- Department of Hematology Oncology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy; Center of Research of Immunopathology and Rare Diseases, and Nephrology and Dialysis Unit, San G. Bosco Hospital and University of Turin, Italy
| | - Alessandro Antonelli
- Department of Clinical and Experimental Medicine, University of Pisa, Via Savi 10, Pisa 56126, Italy
| | - Anne Claire Desbois
- Sorbonne University, UPMC Univ Paris 06, UMR 7211, and Inflammation-Immunopathology-Biotherapy Department (DHU i2B), Paris, France; INSERM, UMR S 959, Paris, France; CNRS, FRE3632, Paris, France; AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Department of Internal Medicine and Clinical Immunology, Paris, France
| | - Cloe Comarmond
- Sorbonne University, UPMC Univ Paris 06, UMR 7211, and Inflammation-Immunopathology-Biotherapy Department (DHU i2B), Paris, France; INSERM, UMR S 959, Paris, France; CNRS, FRE3632, Paris, France; AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Department of Internal Medicine and Clinical Immunology, Paris, France
| | - Laura Gragnani
- Interdepartmental Center for Systemic Manifestations of Hepatitis Viruses (MaSVE), Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Milvia Casato
- Department of Clinical Medicine, Sapienza University of Rome, Viale dell'Università 37, 00185 Rome, Italy.
| | - Peter Lamprecht
- Klinik für Rheumatologie Oberarzt, Ratzeburger Allee 160 (Haus 40), 23538 Lübeck, Germany.
| | - Alessandra Mangia
- Liver Unit, IRCCS "Casa Sollievo della Sofferenza", San Giovanni Rotondo, Italy.
| | - Athanasios G Tzioufas
- Department of Pathophysiology, School of Medicine, University of Athens, 75 M. Asias st, Building 16, Room, 32 11527 Athens, Greece.
| | - Zobair M Younossi
- Center for Liver Diseases, Department of Medicine, Inova Fairfax Hospital, Falls Church, VA, USA; Beatty Liver and Obesity Program, Betty and Guy Beatty Center for Integrated Research, Inova Health System, Falls Church, VA, USA
| | - Patrice Cacoub
- Sorbonne University, UPMC Univ Paris 06, UMR 7211, and Inflammation-Immunopathology-Biotherapy Department (DHU i2B), Paris, France; INSERM, UMR S 959, Paris, France; CNRS, FRE3632, Paris, France; AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Department of Internal Medicine and Clinical Immunology, Paris, France
| |
Collapse
|
21
|
Emmanuel B, Sidique N, Zhang X, Poonia B, Sneller MC, Kottilil S. Decline of cellular activation in non-B cells after rituximab treatment in hepatitis C-associated mixed cryoglobulinemia vasculitis. J Viral Hepat 2017; 24:128-131. [PMID: 27666584 PMCID: PMC5733781 DOI: 10.1111/jvh.12618] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 08/19/2016] [Indexed: 12/09/2022]
Abstract
Mixed cryoglobulinemic vasculitis is associated with the monoclonal expansion of pathognomonic B cells in chronic hepatitis C. Recently, treatment with B-cell depletion, including rituximab, a CD20 monoclonal antibody, has been successful in achieving remission from the active disease. We investigated whether B-cell depletion therapy has an impact on activation of non-B cells in the periphery. Results demonstrated that B-cell depletion therapy is associated with a statistically significant decline in activated T cells, from pretherapy to follow-up while on rituximab therapy: CD4+ CD38+ HLA-DR+ (DR+), CD8+ CD38, CD8+ CD38+ DR+, and CD8+ DR+. Birmingham Vasculitis Activity Score and cryoglobulin had a strong correlation coefficient (R) of 0.72 (P=.0005), while cryoglobulin showed moderate correlation with CD8+ DR+ (R=.61), CD3+ CD38+ DR+ (R=.57), CD3+ DR+ (R=.50), CD4+ CD38+ DR+ (R=.53), CD4+ DR+ (R=.52), and CD8+ CD38+ DR+ (R=.67). These results suggest B-cell expansion has a direct and indirect effect on the pathogenesis of Hepatitis C-associated mixed cryoglobulinemic vasculitis.
Collapse
Affiliation(s)
- B Emmanuel
- Division of Clinical Care and Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - N Sidique
- Laboratory of Immunoregulation, Department of Health and Human Services, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - X Zhang
- Laboratory of Immunoregulation, Department of Health and Human Services, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - B Poonia
- Division of Clinical Care and Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - M C Sneller
- Laboratory of Immunoregulation, Department of Health and Human Services, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - S Kottilil
- Division of Clinical Care and Research, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, USA
- Laboratory of Immunoregulation, Department of Health and Human Services, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| |
Collapse
|
22
|
iNKT and memory B-cell alterations in HHV-8 multicentric Castleman disease. Blood 2016; 129:855-865. [PMID: 28060720 DOI: 10.1182/blood-2016-06-719716] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 11/02/2016] [Indexed: 01/04/2023] Open
Abstract
Human herpesvirus 8 (HHV-8) is the causative agent of Kaposi sarcoma (KS) and multicentric Castleman disease (MCD), a life-threatening, virally induced B-cell lymphoproliferative disorder. HHV-8 is a B-lymphotropic γ-herpesvirus closely related to the Epstein-Barr virus (EBV). Invariant natural killer T (iNKT) cells are innate-like T cells that play a role in antiviral immunity, specifically in controlling viral replication in EBV-infected B cells. Decline of iNKT cells is associated with age or HIV infection, both situations associated with HHV-8-related diseases. We analyzed iNKT cells in both blood (n = 26) and spleen (n = 9) samples from 32 patients with HHV-8 MCD and compared them with patients with KS (n = 24) and healthy donors (n = 29). We determined that both circulating and splenic iNKT cell frequencies were markedly decreased in patients with HHV-8 MCD and were undetectable in 6 of them. Moreover, iNKT cells from patients with HHV-8 MCD displayed a proliferative defect after stimulation with α-galactosylceramide. These iNKT cell alterations were associated with an imbalance in B-cell subsets, including a significant decrease in memory B cells, particularly of marginal zone (MZ) B cells. Coculture experiments revealed that the decrease in iNKT cells contributed to the alterations in the B-cell subset distribution. These observations contribute to a better understanding of the complex interactions between HHV-8 and immune cells that cause HHV-8-related MCD.
Collapse
|
23
|
Uchida K, Okazaki K. Roles of Regulatory T and B Cells in IgG4-Related Disease. Curr Top Microbiol Immunol 2016; 401:93-114. [PMID: 27817178 DOI: 10.1007/82_2016_41] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Immunoglobulin G4 (IgG4) -related disease (RD) is a newly recognized systemic disease. Although there are several forms of IgG4-RD reported under various names, depending on the target organ and characteristics, patients with IgG4-RD manifest several immunologic and histologic abnormalities including increased levels of serum IgG4 and storiform fibrosis with infiltration of lymphocytes and IgG4-positive plasmacytes in the involved organs. However, the pathophysiology remains unclear. Regulatory immune cells play an important role in several immune-related diseases. In particular, abnormalities in regulatory T cell (Treg) and regulatory B cell (Breg) numbers and function are implicated in several immune-related (include autoimmune) conditions, and their roles in IgG4-RD have recently begun to be investigated. We provide an overview of the research conducted to date on Tregs and Bregs in IgG4-RD. We highlight the basic functions of these cells, their changes in patients with various forms of IgG4-RD, and insight gained from animal models of the disease. Based on the evidence accumulated thus far, we proposed a hypothesis for the pathophysiological mechanism of IgG4-RD with respect to the roles regulatory immune cells, and highlight the questions and venues of research deserving of further attenuation, Over all, we demonstrate that Tregs and Bregs have a clear impact on IgG4-RD, and further exploration of this field is expected to lead to a better mechanistic understanding of the disease, hopefully resulting in the in the discovery of new therapeutic targets.
Collapse
Affiliation(s)
- Kazushige Uchida
- Department of Gastroenterology and Hepatology, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, 573-1197, Osaka, Japan. .,Department of Gastroenterology and Hepatology, Kansai Medical University, Hirakata, Japan.
| | - Kazuichi Okazaki
- Department of Gastroenterology and Hepatology, Kansai Medical University, Hirakata, Japan
| |
Collapse
|
24
|
Circulating (CD3(-)CD19(+)CD20(-)IgD(-)CD27(high)CD38(high)) Plasmablasts: A Promising Cellular Biomarker for Immune Activity for Anti-PLA2R1 Related Membranous Nephropathy? Mediators Inflamm 2016; 2016:7651024. [PMID: 27493452 PMCID: PMC4963584 DOI: 10.1155/2016/7651024] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 04/25/2016] [Accepted: 05/08/2016] [Indexed: 01/11/2023] Open
Abstract
Membranous nephropathy (MN) is a kidney specific autoimmune disease mainly mediated by anti-phospholipase A2 receptor 1 autoantibody (PLA2R1 Ab). The adequate assessment of chimeric anti-CD20 monoclonal antibody, rituximab (RTX), efficacy is still needed to improve clinical outcome of patient with MN. We evaluated the modification of plasmablasts (CD3−CD19+CD20−IgD−CD27highCD38high), a useful biomarker of RTX response in other autoimmune diseases, and memory (CD3−CD19+CD20+IgD−CD27+CD38−) and naive (CD3−CD19+CD20+IgD+CD27−CD38low) B cells by fluorescence-activated cell sorter analysis in PLA2R1 related MN in one patient during the 4 years of follow-up after RTX. RTX induced complete disappearance of CD19+ B cells, plasmablasts, and memory B cells as soon as day 15. Despite severe CD19+ lymphopenia, plasmablasts and memory B cells reemerged early before naive B cells (days 45, 90, and 120, resp.). During the follow-up, plasmablasts decreased more rapidly than memory B cells but still remained elevated as compared to day 0 of RTX. Concomitantly, anti-PLA2R1 Ab increased progressively. Our single case report suggests that, besides monitoring of serum anti-PLA2R1 Ab level, enumeration of circulating plasmablasts and memory B cells represents an attractive and complementary tool to assess immunological activity and efficacy of RTX induced B cells depletion in anti-PLA2R1 Ab related MN.
Collapse
|
25
|
Abstract
Patients with chronic hepatitis C virus (HCV) infection frequently present with extrahepatic manifestations covering a large spectrum, involving different organ systems leading to the concept of systemic HCV infection. These manifestations include autoimmune phenomena and frank autoimmune and/or rheumatic diseases and may dominate the course of chronic HCV infection. Chronic HCV infection causes liver inflammation affecting the development of hepatic diseases. HCV is also a lymphotropic virus that triggers B cells and promotes favorable conditions for B lymphocyte proliferation, including mixed cryoglobulinemia (MC) and MC vasculitis, which is the most prominent extrahepatic manifestation of chronic HCV infection. HCV may also promote a low-grade chronic systemic inflammation that may affect the development of some extrahepatic manifestations, particularly cardiovascular and cerebral vascular diseases. Recognition of extrahepatic symptoms of HCV infection could facilitate early diagnosis and treatment. The development of direct-acting antiviral agents (DDAs) has revolutionized HCV treatment. DDAs, as well as new B-cell-depleting or B-cell-modulating monoclonal antibodies, will expand the panorama of treatment options for HCV-related extrahepatic manifestations including cryoglobulinemic vasculitis. In this context, a proactive, integrated approach to HCV therapy should maximize the benefits of HCV therapy, even when liver disease is mild.
Collapse
Affiliation(s)
- E Rosenthal
- Service de Médecine Interne, Hôpital de l'Archet, CHU de Nice, Nice; Université de Nice-Sophia Antipolis, Nice, France COREVIH PACA EST, CHU de Nice, France
| | - P Cacoub
- Sorbonne Universités, UPMC Univ Paris 06, UMR 7211, and Inflammation-Immunopathology-Biotherapy Department (DHU i2B), Paris, France INSERM, UMR_S 959, Paris, France CNRS, FRE3632, Paris, France AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Department of Internal Medicine and Clinical Immunology, Paris, France
| |
Collapse
|
26
|
Monitoring the kinetics of B-cell recovery following rituximab may guide the management of steroid-refractory chronic GvHD. Bone Marrow Transplant 2015; 51:607-9. [PMID: 26642338 DOI: 10.1038/bmt.2015.304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
27
|
Reynaud Q, Killian M, Robles A, Mounsef F, Camdessanché JP, Mariat C, Cathébras P. Le rituximab dans la vraie vie : revue d’utilisation du rituximab de 2010 à 2013 au CHU de Saint-Étienne. Rev Med Interne 2015; 36:800-12. [DOI: 10.1016/j.revmed.2015.06.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 05/03/2015] [Accepted: 06/05/2015] [Indexed: 12/13/2022]
|
28
|
Visentini M, Tinelli C, Colantuono S, Monti M, Ludovisi S, Gragnani L, Mitrevski M, Ranieri J, Fognani E, Piluso A, Granata M, De Silvestri A, Scotti V, Mondelli MU, Zignego AL, Fiorilli M, Casato M. Efficacy of low-dose rituximab for the treatment of mixed cryoglobulinemia vasculitis: Phase II clinical trial and systematic review. Autoimmun Rev 2015; 14:889-96. [PMID: 26031898 DOI: 10.1016/j.autrev.2015.05.013] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 05/24/2015] [Indexed: 01/11/2023]
Abstract
OBJECTIVE To evaluate whether rituximab at a low dose of 250 mg/m(2) × 2 may be as effective as at higher dosages, most commonly 375 mg/m(2)×4, used in previous studies on the treatment of patients with refractory mixed cryoglobulinemia (MC) vasculitis associated with hepatitis C virus (HCV) infection. METHODS We conducted a phase 2, single-arm two-stage trial (EUDRACT n. 2008-000086-38) of low-dose rituximab in 52 patients with HCV-associated MC who were ineligible/intolerant or non-responder to antiviral therapy. The primary outcomes were response of vasculitis evaluated by the Birmingham Vasculitis Activity Score (BVAS) at months 3, 6 and 12, rate of relapses and time to relapse, and rate of adverse events. Our data were compared with those reported in 19 published studies selected among 291 reviewed in a literature search. RESULTS The cumulative response rate (complete and partial) at month 3 was 81% in our patients, and 86% in 208 patients from studies using high-dose rituximab. The relapse rate and median time to relapse were, respectively, 41% and 6 months in our study, and 32% and 7 months in high-dose studies. Treatment-related adverse events were 11.5% in our study and 19.9% in high-dose studies. None of these differences was statistically significant. CONCLUSION Rituximab at a low dosage of 250 mg/m(2) × 2 is as effective as at higher dosages for treating MC vasculitis. This low-dose regimen may improve the cost/benefit profile of rituximab therapy for MC.
Collapse
Affiliation(s)
- Marcella Visentini
- Department of Clinical Medicine, Sapienza University of Rome, Rome, Italy.
| | - Carmine Tinelli
- Clinical Epidemiology and Biometric Unit, IRCCS Policlinico S. Matteo Foundation, Pavia, Italy
| | | | - Monica Monti
- Research Center for Systemic Manifestations of Hepatitis Viruses, Department of Internal Medicine, University of Firenze, Firenze, Italy
| | - Serena Ludovisi
- Infectious Diseases Research Laboratories, IRCCS Policlinico S. Matteo Foundation, Pavia, Italy
| | - Laura Gragnani
- Research Center for Systemic Manifestations of Hepatitis Viruses, Department of Internal Medicine, University of Firenze, Firenze, Italy
| | - Milica Mitrevski
- Department of Clinical Medicine, Sapienza University of Rome, Rome, Italy
| | - Jessica Ranieri
- Research Center for Systemic Manifestations of Hepatitis Viruses, Department of Internal Medicine, University of Firenze, Firenze, Italy
| | - Elisa Fognani
- Research Center for Systemic Manifestations of Hepatitis Viruses, Department of Internal Medicine, University of Firenze, Firenze, Italy
| | - Alessia Piluso
- Research Center for Systemic Manifestations of Hepatitis Viruses, Department of Internal Medicine, University of Firenze, Firenze, Italy
| | - Massimo Granata
- Department of Clinical Medicine, Sapienza University of Rome, Rome, Italy
| | - Annalisa De Silvestri
- Clinical Epidemiology and Biometric Unit, IRCCS Policlinico S. Matteo Foundation, Pavia, Italy
| | - Valeria Scotti
- Clinical Epidemiology and Biometric Unit, IRCCS Policlinico S. Matteo Foundation, Pavia, Italy
| | - Mario U Mondelli
- Infectious Diseases Research Laboratories, IRCCS Policlinico S. Matteo Foundation, Pavia, Italy
| | - Anna Linda Zignego
- Research Center for Systemic Manifestations of Hepatitis Viruses, Department of Internal Medicine, University of Firenze, Firenze, Italy
| | - Massimo Fiorilli
- Department of Clinical Medicine, Sapienza University of Rome, Rome, Italy
| | - Milvia Casato
- Department of Clinical Medicine, Sapienza University of Rome, Rome, Italy
| |
Collapse
|
29
|
Bonanni A, Bertelli R, Rossi R, Bruschi M, Di Donato A, Ravani P, Ghiggeri GM. A Pilot Study of IL2 in Drug-Resistant Idiopathic Nephrotic Syndrome. PLoS One 2015; 10:e0138343. [PMID: 26413873 PMCID: PMC4587361 DOI: 10.1371/journal.pone.0138343] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Accepted: 08/26/2015] [Indexed: 12/02/2022] Open
Abstract
Tregs infusion reverts proteinuria and reduces renal lesions in most animal models of nephrotic syndrome (i.e. Buffalo/Mna, Adriamycin, Promycin, LPS). IL2 up-regulates Tregs and may be an alternative to cell-therapy in this setting. To evaluate a potential role of IL2 as Tregs inducer and proteinuria lowering agent in human nephrotic syndrome we treated 5 nephrotic patients with 6 monthly cycles of low-dose IL2 (1x106 U/m2 first month, 1.5x106 U/m2 following months). The study cohort consisted of 5 children (all boys, 11–17 years) resistant to all the available treatments (i.e. steroids, calcineurin inhibitors, mycophenolate, Rituximab). Participants had Focal Segmental Glomerulosclerosis (3 cases) or Minimal Change Nephropathy (2 cases). IL2 was safe in all but one patient who had an acute asthma attack after the first IL2 dose and did not receive further doses. Circulating Tregs were stably increased (>10%) during the whole study period in 2 cases while were only partially modified in the other two children who started with very low levels and partially responded to single IL2 Proteinuria and renal function were not modified by IL2 at any phase of the study. We concluded that low-dose IL2 given in monthly pulses is safe and modifies the levels of circulating Tregs. This drug may not be able to lower proteinuria or affect renal function in children with idiopathic nephrotic syndrome. We were unable to reproduce in humans the effects of IL2 described in rats and mice reducing de facto the interest on this drug in nephrotic syndrome.
Collapse
Affiliation(s)
- Alice Bonanni
- Division of Nephrology, Dialysis, Transplantation and Laboratory on Physiopathology of Uremia, Giannina Gaslini Children Hospital, Genoa, Italy
| | - Roberta Bertelli
- Division of Nephrology, Dialysis, Transplantation and Laboratory on Physiopathology of Uremia, Giannina Gaslini Children Hospital, Genoa, Italy
| | - Roberta Rossi
- Division of Nephrology, Dialysis, Transplantation and Laboratory on Physiopathology of Uremia, Giannina Gaslini Children Hospital, Genoa, Italy
| | - Maurizio Bruschi
- Division of Nephrology, Dialysis, Transplantation and Laboratory on Physiopathology of Uremia, Giannina Gaslini Children Hospital, Genoa, Italy
| | - Armando Di Donato
- Division of Nephrology, Dialysis, Transplantation and Laboratory on Physiopathology of Uremia, Giannina Gaslini Children Hospital, Genoa, Italy
| | - Pietro Ravani
- Division of Nephrology, University of Calgary, 1403-29th Street NW, Calgary, Alberta, T2N 2T9, Canada
| | - Gian Marco Ghiggeri
- Division of Nephrology, Dialysis, Transplantation and Laboratory on Physiopathology of Uremia, Giannina Gaslini Children Hospital, Genoa, Italy
- * E-mail:
| |
Collapse
|
30
|
Kong F, Zhang W, Feng B, Zhang H, Rao H, Wang J, Cong X, Wei L. Abnormal CD4 + T helper (Th) 1 cells and activated memory B cells are associated with type III asymptomatic mixed cryoglobulinemia in HCV infection. Virol J 2015; 12:100. [PMID: 26129991 PMCID: PMC4501109 DOI: 10.1186/s12985-015-0324-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 06/12/2015] [Indexed: 12/23/2022] Open
Abstract
Background Mixed cryoglobulinemia (MC) in hepatitis C virus (HCV) infection is associated with abnormal immune responses mediated by T cells and B cells, while the relationships of different subsets of CD4 + T helper (Th) cells, B cells and associated cytokines with type III asymptomatic MC in HCV infection are poorly understood. Methods Fifty-four chronic hepatitis C (CHC) patients and 23 healthy controls (HCs) were enrolled in the study. Serum cryoglobulins were detected by cryoprecipitation. The types of cryoglobulin were determined by western blot. The phenotypes and frequencies of Th cell and B cell subsets were detected by flow cytometric analysis. The cytokines IFN-γ, IL-4, IL-17, IL-21, IL-22, and TGF-β were measured by enzyme-linked immunosorbent assay. Results Twenty-six CHC patients were detected with type III asymptomatic MC. The frequencies of Th2, Th17, follicular helper T (Tfh cells), Th22, and tissue-like B cells were significantly higher in CHC patients compared to HCs, while these cell subsets were not significantly different between CHC patients and HCV-related MC patients. The frequencies of Th1 and activated memory B cells increased in HCV-related MC patients compared to HCs, although the difference between the two cell subsets in CHC patients and HCs was not significant. The frequency of regulatory T cells (Treg cells) was higher in CHC patients than in HCV-related MC patients and HCs. Higher expressions of serum IFN-γ, IL-17, IL-21, and IL-22 were observed in CHC patients than in HCs, but the differences were not significantly different in CHC patients and HCV-related MC patients. The frequency of Th1 cells was associated with activated memory B cells in HCV-related MC patients, and the frequency of Th1 cells and activated memory B cells was closely related to HCV RNA in HCV-related MC patients. Conclusions The increased frequencies of Th17 cells, Tfh cells, Th22 cells, Treg cells, cytokines IL-17, IL-21, IL-22, and tissue-like B cells, were related to HCV infection but not type III asymptomatic MC. Higher frequencies of Th1 cells and activated memory B cells were associated with type III asymptomatic MC in HCV infection.
Collapse
Affiliation(s)
- Fanyun Kong
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, No.11 Xizhimen South Street, Beijing, 100044, China. .,Department of Pathogenic biology and Laboratory of Infection and Immunology, Xuzhou Medical College, 84 West Huaihai Road, Xuzhou, 221002, Jiangsu Province, China.
| | - Wei Zhang
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, No.11 Xizhimen South Street, Beijing, 100044, China.
| | - Bo Feng
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, No.11 Xizhimen South Street, Beijing, 100044, China.
| | - Henghui Zhang
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, No.11 Xizhimen South Street, Beijing, 100044, China.
| | - Huiying Rao
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, No.11 Xizhimen South Street, Beijing, 100044, China.
| | - Jianghua Wang
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, No.11 Xizhimen South Street, Beijing, 100044, China.
| | - Xu Cong
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, No.11 Xizhimen South Street, Beijing, 100044, China.
| | - Lai Wei
- Peking University People's Hospital, Peking University Hepatology Institute, Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, No.11 Xizhimen South Street, Beijing, 100044, China.
| |
Collapse
|
31
|
Durali D, de Goër de Herve MG, Gasnault J, Taoufik Y. B cells and progressive multifocal leukoencephalopathy: search for the missing link. Front Immunol 2015; 6:241. [PMID: 26042124 PMCID: PMC4437032 DOI: 10.3389/fimmu.2015.00241] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 05/05/2015] [Indexed: 12/23/2022] Open
Abstract
Progressive multifocal leukoencephalopathy (PML) is a deadly demyelinating disease due to JC virus (JCV) replication in the brain. PML classically occurs in patients with severe immunodepression, and cases have recently been linked to therapeutic monoclonal antibodies such as natalizumab and also rituximab, which depletes B cells. B cells appear to play a complex role in the pathogenesis of PML. They may act as a viral reservoir and as a vector for viral dissemination in the central nervous system. Anti-JCV antibody responses appear to have a limited effect on JCV replication in the brain. However, accumulating evidence suggests that B cells may considerably influence T cell responses through their cytokine secretion. This immunomodulatory function of B cells may play an important role in the control of JCV infection and in the pathogenesis of PML, including rituximab-induced PML.
Collapse
Affiliation(s)
- Deniz Durali
- Immunology Research Laboratory, Department of Medical Microbiology, School of Medicine, Istanbul Medipol University , Istanbul , Turkey
| | | | - Jacques Gasnault
- IMVA-INSERM U1184, Department of Immunology, Bicetre Hospital, University Paris-sud , Le Kremlin-Bicêtre , France
| | - Yassine Taoufik
- IMVA-INSERM U1184, Department of Immunology, Bicetre Hospital, University Paris-sud , Le Kremlin-Bicêtre , France
| |
Collapse
|
32
|
Retamozo S, Brito-Zerón P, Ramos-Casals M. [Treatment of cryoglobulinemic vasculitis associated with hepatitis C virus infection]. Med Clin (Barc) 2015; 144:410-7. [PMID: 24787686 DOI: 10.1016/j.medcli.2014.02.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Revised: 02/13/2014] [Accepted: 02/27/2014] [Indexed: 10/25/2022]
Abstract
Cryoglobulinemia is a heterogeneous systemic autoimmune disease with a wide variety of causes, symptoms and outcomes, and different etiopathogenic pathways involved in the vasculitic organ damage. The discovery of the hepatitis C virus (HCV) in 1989 changed radically the focus of research of the so-called "essential" cryoglobulinemia. Cryoglobulins can be detected in 25-30% of patients with HCV, overwhelmingly representing mixed cryoglobulins. However, only 10-15% of patients present with cryoglobulinemic vasculitis, with a broad spectrum of symptoms including mild or life-threatening manifestations. Consequently, not all patients can be uniformly treated. The key therapeutic points in HCV+ patients with cryoglobulinemic vasculitis cover different aspects. The first is to treat the underlying cause of cryoglobulinemia whenever possible, hence the use of antiviral therapies must always be considered in these patients. An individualized diagnostic approach to assess the number of organs involved and the severity of organ involvement is also essential in the therapeutic planning. This complex clinical scenario leads to an equally complex therapeutic scenario. There are three main treatment strategies for HCV-associated cryoglobulinemic vasculitis: conventional immunosuppression, antiviral treatment and biological therapies. The most recent studies are suggesting a change from the classical therapeutic approach (monotherapeutic regimens) to combination/sequential regimens, including treatments targeting the virus and those directed against the induced autoimmune disease, with the aim of blocking the various etiopathogenic pathways involved.
Collapse
Affiliation(s)
- Soledad Retamozo
- Laboratorio de Enfermedades Autoinmunes Josep Font, Centro de Investigación Biomédica CELLEX-Institut d'Investigacions Biomèdiques August Pi i Sunyer (CELLEX-IDIBAPS), Servicio de Enfermedades Autoinmunes, Institut Clínic de Medicina i Dermatologia (ICMiD), Hospital Clínic, Barcelona. España
| | - Pilar Brito-Zerón
- Laboratorio de Enfermedades Autoinmunes Josep Font, Centro de Investigación Biomédica CELLEX-Institut d'Investigacions Biomèdiques August Pi i Sunyer (CELLEX-IDIBAPS), Servicio de Enfermedades Autoinmunes, Institut Clínic de Medicina i Dermatologia (ICMiD), Hospital Clínic, Barcelona. España
| | - Manuel Ramos-Casals
- Laboratorio de Enfermedades Autoinmunes Josep Font, Centro de Investigación Biomédica CELLEX-Institut d'Investigacions Biomèdiques August Pi i Sunyer (CELLEX-IDIBAPS), Servicio de Enfermedades Autoinmunes, Institut Clínic de Medicina i Dermatologia (ICMiD), Hospital Clínic, Barcelona. España.
| |
Collapse
|
33
|
Klatzmann D, Abbas AK. The promise of low-dose interleukin-2 therapy for autoimmune and inflammatory diseases. Nat Rev Immunol 2015; 15:283-94. [PMID: 25882245 DOI: 10.1038/nri3823] [Citation(s) in RCA: 428] [Impact Index Per Article: 47.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Depletion of regulatory T (TReg) cells in otherwise healthy individuals leads to multi-organ autoimmune disease and inflammation. This indicates that in a normal immune system, there are self-specific effector T cells that are ready to attack normal tissue if they are not restrained by TReg cells. The data imply that there is a balance between effector T cells and TReg cells in health and suggest a therapeutic potential of TReg cells in diseases in which this balance is altered. Proof-of-concept clinical trials, now supported by robust mechanistic studies, have shown that low-dose interleukin-2 specifically expands and activates TReg cell populations and thus can control autoimmune diseases and inflammation.
Collapse
Affiliation(s)
- David Klatzmann
- 1] Sorbonne Université, UPMC Univ Paris 06, UMRS 959, Immunology-Immunopathology-Immunotherapy (i3), F-75651 Paris, France. [2] INSERM, UMRS 959, Immunology-Immunopathology-Immunotherapy (i3), F-75005 Paris, France. [3] Assistance Publique - Hôpitaux de Paris, Hôpital Pitié-Salpêtrière, Biotherapy and Département Hospitalo-Universitaire Inflammation-Immunopathology-Biotherapy (i2B), F-75651 Paris, France
| | - Abul K Abbas
- Department of Pathology, University of California San Francisco, California 94143-0511, USA
| |
Collapse
|
34
|
Ghetie D, Mehraban N, Sibley CH. Cold Hard Facts of Cryoglobulinemia. Rheum Dis Clin North Am 2015; 41:93-108, viii-ix. [DOI: 10.1016/j.rdc.2014.09.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
35
|
Ravani P, Rossi R, Bonanni A, Quinn RR, Sica F, Bodria M, Pasini A, Montini G, Edefonti A, Belingheri M, De Giovanni D, Barbano G, Degl'Innocenti L, Scolari F, Murer L, Reiser J, Fornoni A, Ghiggeri GM. Rituximab in Children with Steroid-Dependent Nephrotic Syndrome: A Multicenter, Open-Label, Noninferiority, Randomized Controlled Trial. J Am Soc Nephrol 2015; 26:2259-66. [PMID: 25592855 DOI: 10.1681/asn.2014080799] [Citation(s) in RCA: 126] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 11/18/2014] [Indexed: 01/03/2023] Open
Abstract
Steroid-dependent nephrotic syndrome (SDNS) carries a high risk of toxicity from steroids or steroid-sparing agents. This open-label, noninferiority, randomized controlled trial at four sites in Italy tested whether rituximab is noninferior to steroids in maintaining remission in juvenile SDNS. We enrolled children age 1-16 years who had developed SDNS in the previous 6-12 months and were maintained in remission with high prednisone doses (≥0.7 mg/kg per day). We randomly assigned participants to continue prednisone alone for 1 month (control) or to add a single intravenous infusion of rituximab (375 mg/m(2); intervention). Prednisone was tapered in both groups after 1 month. For noninferiority, rituximab had to permit steroid withdrawal and maintain 3-month proteinuria (mg/m(2) per day) within a prespecified noninferiority margin of three times the levels among controls (primary outcome). We followed participants for ≥1 year to compare risk of relapse (secondary outcome). Fifteen children per group (21 boys; mean age, 7 years [range, 2.6-13.5 years]) were enrolled and followed for ≤60 months (median, 22 months). Three-month proteinuria was 42% lower in the rituximab group (geometric mean ratio, 0.58; 95% confidence interval, 0.18 to 1.95 [i.e., within the noninferiority margin of three times the levels in controls]). All but one child in the control group relapsed within 6 months; median time to relapse in the rituximab group was 18 months (95% confidence interval, 9 to 32 months). In the rituximab group, nausea and skin rash during infusion were common; transient acute arthritis occurred in one child. In conclusion, rituximab was noninferior to steroids for the treatment of juvenile SDNS.
Collapse
Affiliation(s)
- Pietro Ravani
- Division of Nephrology, University of Calgary, Calgary, Alberta, Canada;
| | - Roberta Rossi
- Division of Nephrology, Dialysis, Transplantation, Giannina Gaslini Children's Hospital, Genoa, Italy
| | - Alice Bonanni
- Division of Nephrology, Dialysis, Transplantation, Giannina Gaslini Children's Hospital, Genoa, Italy
| | - Robert R Quinn
- Division of Nephrology, University of Calgary, Calgary, Alberta, Canada
| | - Felice Sica
- Division of Pediatrics, Hospital of Foggia, Foggia, Italy
| | - Monica Bodria
- Division of Nephrology, Dialysis, Transplantation, Giannina Gaslini Children's Hospital, Genoa, Italy
| | - Andrea Pasini
- Nephrology and Pediatric Dialysis, Department of Pediatrics, Azienda Ospedaliera Universitaria Sant'Orsola, Bologna, Italy
| | - Giovanni Montini
- Nephrology and Pediatric Dialysis, Department of Pediatrics, Azienda Ospedaliera Universitaria Sant'Orsola, Bologna, Italy
| | - Alberto Edefonti
- Pediatric Nephrology and Dialysis Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - Mirco Belingheri
- Pediatric Nephrology and Dialysis Unit, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | | | - Giancarlo Barbano
- Division of Nephrology, Dialysis, Transplantation, Giannina Gaslini Children's Hospital, Genoa, Italy
| | - Ludovica Degl'Innocenti
- Division of Nephrology, Dialysis, Transplantation, Giannina Gaslini Children's Hospital, Genoa, Italy
| | - Francesco Scolari
- Division of Nephrology and Dialysis, Ospedale di Montichiari Azienda Ospedaliera Spedali Civili di Brescia, Brescia, Italy
| | - Luisa Murer
- Pediatric Nephrology, Dialysis and Transplant Unit, Department of Pediatrics, University Hospital of Padua, Padua, Italy
| | - Jochen Reiser
- Department of Internal Medicine, Rush University Medical Center, Chicago, Illinois; and
| | - Alessia Fornoni
- Miller School of Medicine, University of Miami, Miami, Florida
| | - Gian Marco Ghiggeri
- Division of Nephrology, Dialysis, Transplantation, Giannina Gaslini Children's Hospital, Genoa, Italy
| |
Collapse
|
36
|
Lykken JM, DiLillo DJ, Weimer ET, Roser-Page S, Heise MT, Grayson JM, Weitzmann MN, Tedder TF. Acute and chronic B cell depletion disrupts CD4+ and CD8+ T cell homeostasis and expansion during acute viral infection in mice. THE JOURNAL OF IMMUNOLOGY 2014; 193:746-56. [PMID: 24928986 DOI: 10.4049/jimmunol.1302848] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
B cells provide humoral protection against pathogens and promote cellular immunity through diverse nonclassical effector functions. To assess B cell function in promoting T cell homeostasis, mature B cells were either acutely or chronically depleted in mice using CD20 mAb. Acute B cell depletion in either 2- or 4-mo-old mice significantly reduced spleen and lymph node CD4(+) and CD8(+) T cell numbers, including naive, activated, and Foxp3(+)CD25(+)CD4(+) regulatory T cell subsets. The numbers of IFN-γ- and TNF-α-producing T cells were also significantly reduced. Chronic B cell depletion for 6 mo in aged naive mice resulted in a 40-70% reduction in activated CD4(+) and CD8(+) T cell numbers and 20-50% reductions in IFN-γ-producing T cells. Therefore, B cells were necessary for maintaining naive CD4(+) and CD8(+) T cell homeostasis for subsequent optimal T cell expansion in young and old mice. To determine the significance of this finding, a week of B cell depletion in 4-mo-old mice was followed by acute viral infection with lymphocytic choriomeningitis virus Armstrong. Despite their expansion, activated and cytokine-producing CD4(+) and CD8(+) T cell numbers were still significantly reduced 1 wk later. Moreover, viral peptide-specific CD4(+) and CD8(+) T cell numbers and effector cell development were significantly reduced in mice lacking B cells, whereas lymphocytic choriomeningitis virus titers were dramatically increased. Thus, T cell function is maintained in B cell-depleted mice, but B cells are required for optimal CD4(+) and CD8(+) T cell homeostasis, activation, and effector development in vivo, particularly during responses to acute viral infection.
Collapse
Affiliation(s)
- Jacquelyn M Lykken
- Department of Immunology, Duke University Medical Center, Durham, NC 27710
| | - David J DiLillo
- Department of Immunology, Duke University Medical Center, Durham, NC 27710
| | - Eric T Weimer
- Department of Immunology, Duke University Medical Center, Durham, NC 27710
| | - Susanne Roser-Page
- Atlanta Department of Veterans Affairs Medical Center, Decatur, GA 30033
| | - Mark T Heise
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Jason M Grayson
- Department of Microbiology and Immunology, Wake Forest University School of Medicine, Winston-Salem, NC 27157; and
| | - M Neale Weitzmann
- Atlanta Department of Veterans Affairs Medical Center, Decatur, GA 30033; Division of Endocrinology, Metabolism and Lipids, Emory University School of Medicine, Atlanta, GA 30322
| | - Thomas F Tedder
- Department of Immunology, Duke University Medical Center, Durham, NC 27710;
| |
Collapse
|
37
|
Ramirez GA, Maugeri N, Sabbadini MG, Rovere-Querini P, Manfredi AA. Intravascular immunity as a key to systemic vasculitis: a work in progress, gaining momentum. Clin Exp Immunol 2014; 175:150-66. [PMID: 24128276 DOI: 10.1111/cei.12223] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/07/2013] [Indexed: 01/06/2023] Open
Abstract
Vascular inflammation contributes to the defence against invading microbes and to the repair of injured tissues. In most cases it resolves before becoming apparent. Vasculitis comprises heterogeneous clinical entities that are characterized by the persistence of vascular inflammation after it has served its homeostatic function. Most underlying mechanisms have so far remained elusive. Intravascular immunity refers to the surveillance of the vasculature by leucocytes that sense microbial or sterile threats to vessel integrity and initiate protective responses that entail most events that determine the clinical manifestations of vasculitis, such as end-organ ischaemia, neutrophil extracellular traps generation and thrombosis, leucocyte extravasation and degranulation. Understanding how the resolution of vascular inflammation goes awry in patients with systemic vasculitis will facilitate the identification of novel pharmacological targets and bring us a step closer in each patient to the selection of more effective and less toxic treatments.
Collapse
Affiliation(s)
- G A Ramirez
- Istituto Scientifico San Raffaele and Università Vita Salute San Raffaele, Milano, Italy
| | | | | | | | | |
Collapse
|
38
|
Terrier B, Nagata S, Ise T, Rosenzwajg M, Pastan I, Klatzmann D, Saadoun D, Cacoub P. CD21(-/low) marginal zone B cells highly express Fc receptor-like 5 protein and are killed by anti-Fc receptor-like 5 immunotoxins in hepatitis C virus-associated mixed cryoglobulinemia vasculitis. Arthritis Rheumatol 2014; 66:433-43. [PMID: 24504816 DOI: 10.1002/art.38222] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Accepted: 10/01/2013] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Hepatitis C virus (HCV) is associated with B cell lymphoproliferative disorders, including mixed cryoglobulinemia (MC) vasculitis and B cell non-Hodgkin's lymphoma. The expansion of clonal and autoreactive rheumatoid factor-bearing CD21(-/low) marginal zone (MZ) B cells was demonstrated in patients with HCV-associated MC vasculitis. Fc receptor-like (FCRL) proteins comprise a family of immunoregulatory proteins preferentially expressed on B lineage cells. The goal of this study was to investigate the expression of FCRL proteins 1-5 on B cells from patients with HCV-associated MC vasculitis. METHODS Expression of FCRL proteins 1-5 was assessed by flow cytometry on B cells from 15 HCV-infected patients with type II MC (7 of whom had B cell non-Hodgkin's lymphoma), 20 HCV-infected patients without MC, and 20 healthy donors. To evaluate FCRL-5 as an immunotherapy target in HCV-associated MC vasculitis, 2 anti-FCRL-5 recombinant immunotoxins were produced using anti-FCRL-5 monoclonal antibodies and Pseudomonas exotoxin. RESULTS Expression of FCRLs 2, 3, and 5 was markedly increased while expression of FCRL-1 was decreased on clonal CD21(-/low) MZ B cells, as compared with other B cell subsets, from HCV-infected patients and healthy donors. However, there was no difference in the pattern of FCRL expression between HCV-MC patients with lymphoma and those without lymphoma. The anti-FCRL-5 immunotoxins showed specific cytotoxicity against FCRL-5-expressing clonal CD21(-/low) MZ B cells isolated from HCV-infected patients as well as FCRL-5-transfected cell lines. No cytotoxicity against T cells or conventional B cells was observed. CONCLUSION These findings suggest that FCRL-5-targeting therapies could be a specific treatment for HCV-associated MC vasculitis and other FCRL-5-positive autoimmune B cell disorders.
Collapse
Affiliation(s)
- Benjamin Terrier
- UMR CNRS 7211, INSERM U959, Groupe Hospitalier Pitié-Salpetrière, and Université Pierre et Marie Curie, Paris 6, Paris, France
| | | | | | | | | | | | | | | |
Collapse
|
39
|
Yang SH, Hsu C, Cheng AL, Kuo SH. Anti-CD20 monoclonal antibodies and associated viral hepatitis in hematological diseases. World J Hematol 2014; 3:29-43. [DOI: 10.5315/wjh.v3.i2.29] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 01/27/2014] [Accepted: 03/18/2014] [Indexed: 02/05/2023] Open
Abstract
Over the past decade, the administration of anti-CD20 monoclonal antibodies such as rituximab has demonstrated various degrees of effectiveness and has improved patients’ outcomes during the treatment of autoimmune hematological disorders and hematological malignancies. However, the depletion of B-cells, the distribution of T-cell populations, and the reconstruction of host immunity resulting from the use of anti-CD20 monoclonal antibodies potentially lead to severe viral infections, such as hepatitis B virus (HBV), hepatitis C virus (HCV), parvovirus B19, and herpes viruses, in patients who are undergoing immune therapy or immunochemotherapy. Of these infections, HBV- and HCV-related hepatitis are a great concern in endemic areas because of the high morbidity and mortality rates in untreated patients. As a result, prophylaxis against HBV infection is becoming a standard of care in these areas. Parvovirus B19, a widespread pathogen that causes red blood cell aplasia in immunocompromised hosts, also causes hepatitis in healthy individuals. Recently, its association with hepatitis was recognized in a patient treated with rituximab. In addition, adenovirus, varicella-zoster virus, hepatitis E virus, and rituximab itself have been linked to the occurrence of hepatitis during or after rituximab treatments. The epidemiologies and pathogeneses of these etiologies remain unknown. Because of the increasing use of anti-CD20 monoclonal antibodies for the treatment of hematological malignancies or autoimmune hematological disorders, it is imperative that physicians understand and balance the risks of hepatotropic virus-associated hepatitis against the benefits of using anti-CD20 monoclonal antibodies.
Collapse
|
40
|
Saadoun D, Cacoub P. Current and future therapeutic strategies for treating mixed cryoglobulinemia. Expert Opin Orphan Drugs 2014. [DOI: 10.1517/21678707.2014.883919] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
41
|
Mélet J, Mulleman D, Goupille P, Ribourtout B, Watier H, Thibault G. Rituximab-induced T cell depletion in patients with rheumatoid arthritis: association with clinical response. ACTA ACUST UNITED AC 2014; 65:2783-90. [PMID: 23918413 DOI: 10.1002/art.38107] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Accepted: 07/23/2013] [Indexed: 12/25/2022]
Abstract
OBJECTIVE Rituximab, a monoclonal antibody specifically targeting CD20, induces B cell depletion and is effective in the treatment of rheumatoid arthritis (RA). This study was undertaken to evaluate whether routine monitoring of lymphocyte subpopulations, especially T cells, may be useful in patients receiving rituximab for RA. METHODS We examined data on all RA patients receiving rituximab between July 2007 and November 2012 in our center. Peripheral blood CD3+, CD4+, CD8+, CD3-CD56+, and CD19+ lymphocyte counts before and during the first course of rituximab were measured by flow cytometry. The Mann-Whitney nonparametric test was used to compare lymphocyte subpopulation counts before and during treatment. RESULTS Data on 52 patients were examined. Rituximab induced unexpected and substantial depletion of T cells, mainly CD4+ cells, in most patients. The CD4+ cell count decreased by a mean ± SD of 37 ± 33% as compared to baseline at week 12, reaching <200 cells/μl in 3 patients. Importantly, lack of CD4+ cell depletion was associated with no clinical response. Therefore, the mechanism of action of rituximab may depend at least in part on T cells. CONCLUSION Rituximab induces substantial T cell depletion, mainly of CD4+ cells, which is associated with the clinical response in RA. Routine monitoring of T cells may be useful in the clinical setting of RA.
Collapse
Affiliation(s)
- J Mélet
- Université François-Rabelais de Tours, CNRS, UMR 7292, and Centre Hospitalier Régional Universitaire de Tours, Tours, France
| | | | | | | | | | | |
Collapse
|
42
|
Abstract
Anti-CD20 monoclonal antibodies (MoAbs), employed in treating CD20⁺ lymphomas and autoimmune diseases, appear to have broader functions than just eradicating malignant B-cells and decreasing autoantibody production. Rituximab-induced T-cell inactivation, reported both in-vitro and in-vivo, may contribute to the increased risk of T-cell-dependent infections, observed in patients receiving this therapy. T-cell polarization into a suppressive phenotype, often observed in patients receiving rituximab for autoimmune disorders, was reported to be associated with prolonged remissions. Elimination of B-cells serving as antigen-presenting cells, thereby causing impaired T-cell activation, could play a significant role in induction of these changes. Direct binding of rituximab to a CD20dim T-cell population, inducing its depletion, may contribute to the decreased T-cell activation following rituximab therapy. Further investigation of the complex network through which rituximab and new anti-CD20 MoAbs act, would advance the employment of these agents in different clinical settings.
Collapse
|
43
|
Ojaimi S, Lin MW, Singh KP, Woolley I. The two-edged sword: vasculitis associated with HIV and hepatitis C coinfection. Int J STD AIDS 2013; 25:77-88. [PMID: 23970639 DOI: 10.1177/0956462413495671] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Vasculitis has long been associated with chronic viral infections, thus the twin perils of the infection and the immune response against it that bedevils the specialties of infection and immunity. After HIV was identified, it too became associated with vasculitic syndromes. Later, hepatitis C virus was also isolated, identified and described with its own spectrum of vasculitic diseases, including hepatitis C virus-associated cryoglobulinaemia. With the increasing prevalence of HIV and hepatitis C virus coinfection, there has come an increasing recognition of the range of vasculitides that can occur in this population leading to significant morbidity, diagnostic and treatment challenges. In this review, we examine the epidemiology, pathogenesis and general principles of treatment of these systemic diseases in HIV/hepatitis C virus coinfected individuals.
Collapse
Affiliation(s)
- Samar Ojaimi
- Department of Infectious Diseases, Southern Health, Clayton, Australia
| | | | | | | |
Collapse
|
44
|
Lanini S, Molloy AC, Prentice AG, Ippolito G, Kibbler CC. Infections in patients taking Rituximab for hematologic malignancies: two-year cohort study. BMC Infect Dis 2013; 13:317. [PMID: 23849292 PMCID: PMC3716624 DOI: 10.1186/1471-2334-13-317] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Accepted: 07/09/2013] [Indexed: 12/02/2022] Open
Abstract
Background Rituximab (R) is a chimeric human-murine anti-CD20 monoclonal antibody used to treat B-cell lymphomas. Despite R remarkable activity against malignant cells, there are concerns that R may facilitate the occurrence of infections. This study is aimed to define risk factors for infections, and the potential interaction with time since therapy, in patients undergoing R containing regimens. Methods The study has been designed as a multiple failure events historical cohort including all patients who received a R contain regimen at London Royal Free Hospital between May 2007 and April 2009. Result One-hundred-eighty-one infections occurred among the 113 enrolled patients (overall incidence rate 3.30 per 1000 person-days). Multivariate analysis showed that lymphocyte counts at nadir, graft versus host disease, HIV sero-status and the type of malignancy were all independently associated with the risk of infection. In addition the analysis of the interaction with the time since the start of therapy provided evidence that different risk factors may increase risk of infections in different times. Conclusion This study provides preliminary data to describe the association between several patients’ baseline characteristics and infections during therapy with R.
Collapse
Affiliation(s)
- Simone Lanini
- National Institute for Infectious Diseases, INMI-Lazzaro Spallanzani, Via Portuense, 292, 00149, Rome, Italy.
| | | | | | | | | |
Collapse
|
45
|
Saeed A, Alkhazna A. An adult patient with respiratory failure and splenomegaly. J Clin Virol 2013; 59:77-80. [PMID: 23850172 DOI: 10.1016/j.jcv.2013.06.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 06/12/2013] [Accepted: 06/16/2013] [Indexed: 11/20/2022]
Affiliation(s)
- Anwaar Saeed
- Hematology- Oncology Division, University of Kansas Medical Center, Kansas, USA.
| | - Ammar Alkhazna
- Department of Pulmonary and Critical Care Medicine, University of Missouri, Kansas City, Missouri, USA.
| |
Collapse
|
46
|
Rituximab-based novel strategies for the treatment of immune-mediated glomerular diseases. Autoimmun Rev 2013; 12:854-9. [DOI: 10.1016/j.autrev.2012.09.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/03/2012] [Indexed: 11/23/2022]
|
47
|
Abstract
Antibody-independent role of B cells in modulating T-cell responses is incompletely understood. Freshly isolated or cultured B cells isolated from the peripheral blood of 30 normal donors were evaluated for CD39 and CD73 coexpression, the ability to produce adenosine 5'-monophosphate (AMP) and adenosine (ADO) in the presence of exogenous adenosine triphosphate (ATP) as well as A₁, A2A, A2B, and A₃ adenosine receptor (ADOR) expression. Human circulating B cells coexpress ectonucleotidases CD39 and CD73, hydrolyze exogenous ATP to 5'-AMP and ADO, and express messenger RNA for A₁R, A2AR, and A₃R. 2-chloroadenosine inhibited B-cell proliferation and cytokine expression, and only A₃R selective antagonist restored B-cell functions. This suggested that B cells use the A₃R for autocrine signaling and self-regulation. Mediated effects on B-cell growth ± ADOR antagonists or agonists were tested in carboxyfluorescein diacetate succinimidyl ester assays. In cocultures, resting B cells upregulated functions of CD4⁺ and CD8⁺ T cells. However, in vitro-activated B cells downregulated CD73 expression, mainly produced 5'-AMP, and inhibited T-cell proliferation and cytokine production. These B cells acquire the ability to restrict potentially harmful effects of activated T cells. Thus, B cells emerge as a key regulatory component of T cell-B cell interactions, and their dual regulatory activity is mediated by the products of ATP hydrolysis, 5'-AMP, and ADO.
Collapse
|
48
|
Immunothérapie par interleukine-2 dans le traitement des maladies auto-immunes. Rev Med Interne 2013; 34:133-5. [DOI: 10.1016/j.revmed.2012.10.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2012] [Accepted: 10/02/2012] [Indexed: 01/27/2023]
|
49
|
Abstract
Rituximab offers an alternative to current immunosuppressive therapies for difficult-to-treat nephrotic syndrome. The best outcomes are seen in patients with steroid-dependent nephrotic syndrome who have failed to respond to multiple therapies. By contrast, the benefits of rituximab therapy are limited in patients with steroid-resistant nephrotic syndrome, particularly those with focal segmental glomerulosclerosis (FSGS). Therapy with plasma exchange and one or two doses of rituximab has shown success in patients with recurrent FSGS. Young patients and those with normal serum albumin at recurrence of nephrotic syndrome are most likely to respond to rituximab therapy. A substantial proportion of rituximab-treated patients with idiopathic membranous nephropathy show complete or partial remission of proteinuria, and reduced levels of phospholipase A(2) receptor autoantibodies, which are implicated in the pathogenesis of this disorder. Successful rituximab therapy induces prolonged remission and enables discontinuation of other medications without substantially increasing the risk of infections and other serious adverse events. However, the available evidence of efficacy of rituximab therapy is derived chiefly from small case series and requires confirmation in prospective, randomized, controlled studies that define the indications for use and predictors of response to this therapy.
Collapse
|
50
|
Rosenzwajg M. Lymphocytes T régulateurs, interleukine-2 et traitement des maladies auto-immunes. Ann Dermatol Venereol 2012. [DOI: 10.1016/j.annder.2012.10.573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|