1
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Yadav R, Vague M, Rettig M, Loo CP, Brown K, Samiea A, Moreau JM, Ortega-Loayza AG. IL-12/IL23 blockade reveals patterns of asynchronous inflammation in pyoderma gangrenosum. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.26.591387. [PMID: 38746177 PMCID: PMC11092430 DOI: 10.1101/2024.04.26.591387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Pyoderma gangrenosum (PG) is a rare neutrophilic dermatosis causing chronic and recalcitrant painful ulcerations. Pathogenic mechanisms are yet poorly understood limiting therapeutic options, however, IL-12/IL-23 inhibition via ustekinumab has previously been associated with positive outcomes. We aimed to elucidate the dysregulated immune landscape of PG and lesional skin changes associated with IL-12/IL-23 blockade. We applied spatial transcriptomics and comparative computation analysis on lesional biopsies from two patients obtained before and after IL-12/IL-23 blockade with ustekinumab. Our data indicate lesional PG skin exhibits complex patterns of inflammation, including a not previously described major infiltration of B cells and establishment of tertiary lymphoid structures. In both patients, IL-12/IL-23 blockade led to marked clinical improvement but was associated with amelioration of contrasting inflammatory pathways. Notably, plasma cell markers and tertiary structures were recalcitrant to the treatment regime suggesting that B cells might play a role in the refractory nature of PG.
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2
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Kreuter A, Woisch C, Großmann M, Burmann SN, Müller VL, Michalowitz AL. Maggot debridement therapy in pyoderma gangrenosum - a case series of five patients. J Dtsch Dermatol Ges 2023; 21:1227-1230. [PMID: 37632698 DOI: 10.1111/ddg.15177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 06/13/2023] [Indexed: 08/28/2023]
Affiliation(s)
- Alexander Kreuter
- Department of Dermatology, Venereology, and Allergology, Helios St. Elisabeth Hospital Oberhausen, University Witten-Herdecke, Oberhausen, Germany
- Department of Dermatology, Venereology, and Allergology, Helios St. Johannes Hospital Duisburg, Germany
| | - Carmen Woisch
- Department of Dermatology, Venereology, and Allergology, Helios St. Elisabeth Hospital Oberhausen, University Witten-Herdecke, Oberhausen, Germany
| | - Mona Großmann
- Department of Dermatology, Venereology, and Allergology, Helios St. Elisabeth Hospital Oberhausen, University Witten-Herdecke, Oberhausen, Germany
| | - Sven-Niklas Burmann
- Department of Dermatology, Venereology, and Allergology, Helios St. Elisabeth Hospital Oberhausen, University Witten-Herdecke, Oberhausen, Germany
| | - Valentina Laura Müller
- Department of Dermatology, Venereology, and Allergology, Helios St. Johannes Hospital Duisburg, Germany
| | - Alena-Lioba Michalowitz
- Department of Dermatology, Venereology, and Allergology, Helios St. Elisabeth Hospital Oberhausen, University Witten-Herdecke, Oberhausen, Germany
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3
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Kreuter A, Woisch C, Großmann M, Burmann SN, Müller VL, Michalowitz AL. Madendebridement bei Pyoderma gangraenosum - eine Fallserie von fünf Patienten: Maggot debridement therapy in pyoderma gangrenosum - a case series of five patients. J Dtsch Dermatol Ges 2023; 21:1227-1230. [PMID: 37845054 DOI: 10.1111/ddg.15177_g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 06/13/2023] [Indexed: 10/18/2023]
Affiliation(s)
- Alexander Kreuter
- Klinik für Dermatologie, Venerologie und Allergologie, Helios St. Elisabeth Klinik Oberhausen, Universität Witten-Herdecke
- Klinik für Dermatologie, Venerologie und Allergologie, Helios St. Johannes Klinik Duisburg
| | - Carmen Woisch
- Klinik für Dermatologie, Venerologie und Allergologie, Helios St. Elisabeth Klinik Oberhausen, Universität Witten-Herdecke
| | - Mona Großmann
- Klinik für Dermatologie, Venerologie und Allergologie, Helios St. Elisabeth Klinik Oberhausen, Universität Witten-Herdecke
| | - Sven-Niklas Burmann
- Klinik für Dermatologie, Venerologie und Allergologie, Helios St. Elisabeth Klinik Oberhausen, Universität Witten-Herdecke
| | - Valentina Laura Müller
- Klinik für Dermatologie, Venerologie und Allergologie, Helios St. Johannes Klinik Duisburg
| | - Alena-Lioba Michalowitz
- Klinik für Dermatologie, Venerologie und Allergologie, Helios St. Elisabeth Klinik Oberhausen, Universität Witten-Herdecke
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4
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Dissemond J, Marzano AV, Hampton PJ, Ortega-Loayza AG. Pyoderma Gangrenosum: Treatment Options. Drugs 2023; 83:1255-1267. [PMID: 37610614 PMCID: PMC10511384 DOI: 10.1007/s40265-023-01931-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/01/2023] [Indexed: 08/24/2023]
Abstract
Pyoderma gangrenosum is a rare neutrophilic dermatosis that leads to exceedingly painful ulcerations of the skin. Although the exact pathogenesis is not yet fully understood, various auto-inflammatory phenomena with increased neutrophil granulocyte activity have been demonstrated. Despite the limited understanding of the pathogenesis, it is no longer a diagnosis of exclusion, as it can now be made on the basis of validated scoring systems. However, therapy remains a major multidisciplinary challenge. Various immunosuppressive and immunomodulatory therapies are available for the treatment of affected patients. In addition, concomitant topical pharmacologic therapy, wound management and pain control should always be addressed. Corticosteroids and/or cyclosporine remain the systemic therapeutics of choice for most patients. However, in recent years, there has been an increasing number of studies on the positive effects of biologic therapies such as inhibitors of tumour necrosis factor-α; interleukin-1, interleukin-17, interleukin-23 or complement factor C5a. Biologics have now become the drug of choice in certain scenarios, particularly in patients with underlying inflammatory comorbidities, and are increasingly used at an early stage in the disease rather than in therapy refractory patients.
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Affiliation(s)
- Joachim Dissemond
- Department of Dermatology, Venerology and Allergology, University of Essen, Hufelandstr. 55, 45147, Essen, Germany.
| | - Angelo V Marzano
- Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale, Maggiore Policlinico, Milan, Italy
- Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Philip J Hampton
- Department of Dermatology, Newcastle Dermatology, Newcastle Hospitals NHS Trust, Newcastle upon Tyne, UK
| | - Alex G Ortega-Loayza
- Department of Dermatology, Oregon Health & Science, University, Portland, OR, USA
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5
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Schanzenbacher J, Hendrika Kähler K, Mesler E, Kleingarn M, Marcel Karsten C, Leonard Seiler D. The role of C5a receptors in autoimmunity. Immunobiology 2023; 228:152413. [PMID: 37598588 DOI: 10.1016/j.imbio.2023.152413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 06/04/2023] [Accepted: 06/10/2023] [Indexed: 08/22/2023]
Abstract
The complement system is an essential component of the innate immune response and plays a vital role in host defense and inflammation. Dysregulation of the complement system, particularly involving the anaphylatoxin C5a and its receptors (C5aR1 and C5aR2), has been linked to several autoimmune diseases, indicating the potential for targeted therapies. C5aR1 and C5aR2 are seven-transmembrane receptors with distinct signaling mechanisms that play both partially overlapping and opposing roles in immunity. Both receptors are expressed on a broad spectrum of immune and non-immune cells and are involved in cellular functions and physiological processes during homeostasis and inflammation. Dysregulated C5a-mediated inflammation contributes to autoimmune diseases such as rheumatoid arthritis, systemic lupus erythematosus, multiple sclerosis, epidermolysis bullosa acquisita, antiphospholipid syndrome, and others. Therefore, targeting C5a or its receptors may yield therapeutic innovations in these autoimmune diseases by reducing the recruitment and activation of immune cells that lead to tissue inflammation and injury, thereby exacerbating the autoimmune response. Clinical trials focused on the inhibition of C5 cleavage or the C5a/C5aR1-axis using small molecules or monoclonal antibodies hold promise for bringing novel treatments for autoimmune diseases into practice. However, given the heterogeneous nature of (systemic) autoimmune diseases, there are still several challenges, such as patient selection, optimal dosing, and treatment duration, that require further investigation and development to realize the full therapeutic potential of C5a receptor inhibition, ideally in the context of a personalized medicine approach. Here, we aim to provide a brief overview of the current knowledge on the function of C5a receptors, the involvement of C5a receptors in autoimmune disorders, the molecular mechanisms underlying C5a receptor-mediated autoimmunity, and the potential for targeted therapies to modulate their activity.
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Affiliation(s)
- Jovan Schanzenbacher
- Institute for Systemic Inflammation Research (ISEF), University of Lübeck, Lübeck, Germany
| | - Katja Hendrika Kähler
- Institute for Systemic Inflammation Research (ISEF), University of Lübeck, Lübeck, Germany
| | - Evelyn Mesler
- Institute for Systemic Inflammation Research (ISEF), University of Lübeck, Lübeck, Germany
| | - Marie Kleingarn
- Institute for Systemic Inflammation Research (ISEF), University of Lübeck, Lübeck, Germany
| | | | - Daniel Leonard Seiler
- Institute for Systemic Inflammation Research (ISEF), University of Lübeck, Lübeck, Germany.
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6
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McCarthy MW. Optimizing the use of vilobelimab for the treatment of COVID-19. Expert Opin Biol Ther 2023; 23:877-881. [PMID: 37421632 DOI: 10.1080/14712598.2023.2235269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 07/05/2023] [Accepted: 07/07/2023] [Indexed: 07/10/2023]
Abstract
INTRODUCTION On 4 April 2023i4 April 2023, the United States Food and Drug Administration issued an emergency use authorization for the use of vilobelimab (GohibicTM) for the treatment of COVID-19 in hospitalized adults when initiated within 48 hours of receiving invasive mechanical ventilation or extracorporeal membrane oxygenation. AREAS COVERED Vilobelimab is a human-mouse chimeric IgG4 kappa antibody that targets human complement component 5a, a part of the immune system that is thought to play an important role in the systemic inflammation due to SARS-CoV-2 infection that leads to COVID-19 disease progression. EXPERT OPINION A pragmatic, adaptive, randomized, multicenter phase II/III study evaluating vilobelimab for the treatment of severe COVID-19 found that patients receiving invasive mechanical ventilation and usual care who were treated with vilobelimab had a lower risk of death by day 28 and day 60 compared to those receiving placebo. This manuscript explores what is known about vilobelimab and explores how this treatment may be used in the future to treat severe COVID-19.
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Affiliation(s)
- Matthew W McCarthy
- Department of Medicine, Weill Cornell Medicine, New York, NY, United States of America
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7
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Stathopoulos P, Dalakas MC. The role of complement and complement therapeutics in neuromyelitis optica spectrum disorders. Expert Rev Clin Immunol 2022; 18:933-945. [PMID: 35899480 DOI: 10.1080/1744666x.2022.2105205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Neuromyelitis optica spectrum disorders (NMOSD) are characterized in the majority of cases by the presence of IgG1 autoantibodies against aquaporin 4 (AQP4) and myelin-oligodendrocyte glycoprotein (MOG), both capable of activating complement. AREAS COVERED We review evidence of complement involvement in NMOSD pathophysiology from pathological, in vitro, in vivo, human studies, and clinical trials. EXPERT OPINION In AQP4 NMOSD, complement deposition is a prominent pathological feature, while in vitro and in vivo studies have demonstrated complement-dependent pathogenicity of AQP4 antibodies. Consistent with these studies, the anti-C5 monoclonal antibody eculizumab was remarkably effective and safe in a phase 2/3 trial of AQP4-NMOSD patents leading to FDA-approved indication. Several other anti-complement agents, either approved or in trials for other neuro-autoimmunities, like myasthenia, CIDP, and GBS, are also relevant to NMOSD generating an exciting group of evolving immunotherapies. Limited but compelling in vivo and in vitro data suggest that anti-complement therapeutics may be also applicable to a subset of MOG NMOSD patients with severe disease. Overall, anticomplement agents, along with the already approved anti-IL6 and anti-CD19 monoclonal antibodies sartralizumab and inebilizumab, are rapidly changing the therapeutic algorithm in NMOSD, a previously difficult-to-treat autoimmune neurological disorder.
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Affiliation(s)
- Panos Stathopoulos
- Department of Neurology, National and Kapodistrian University of Athens, Athens, Greece
| | - Marinos C Dalakas
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA.,Neuroimmunology Unit, National and Kapodistrian University of Athens, Athens, Greece
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8
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Michel D, Dege T, Kneitz H, Stumpf M, Goebeler M, Schmieder A. Pyoderma gangraenosum als diagnostische und therapeutische
interdisziplinäre Herausforderung. AKTUEL RHEUMATOL 2022. [DOI: 10.1055/a-1798-5164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
ZusammenfassungDas Pyoderma gangraenosum (PG) ist eine neutrophile Dermatose unklarer Genese,
die sowohl in Assoziation zu hämatologischen und neoplastischen
Systemerkrankungen, chronisch-entzündlichen Darmerkrankungen und
autoinflammatorischen Syndromen als auch idiopathisch auftreten kann. Sowohl die
Diagnosestellung wie auch die Therapie des PG stellen aufgrund seiner
Seltenheit, des Fehlens großer randomisierter kontrollierter Studien und
der unzureichend verstandenen Pathogenese eine Herausforderung in der klinischen
Praxis dar. Diese Übersichtsarbeit beschreibt und diskutiert aktuelle
Erkenntnisse, die das PG als autoinflammatorische Erkrankung beschreiben. Durch
eine Dysregulation von T-Lymphozyten und myeloiden Zellen wie den neutrophilen
Granulozyten kommt es zur Entstehung von Pusteln und
großflächigen Ulzera. Klassische Therapieansätze
umfassen eine anti-inflammatorische topische Therapie, eine Analgesie sowie die
systemische Gabe von Immunmodulantien oder -suppressiva. Neuere, bisher nicht
zugelassene Therapieoptionen sind der Einsatz von Biologika und
JAK-Inhibitoren.
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Affiliation(s)
- Daniel Michel
- Klinik für Dermatologie, Venerologie und Allergologie,
Universitätsklinikum Würzburg, Würzburg,
Germany
| | - Tassilo Dege
- Klinik für Dermatologie, Venerologie und Allergologie,
Universitätsklinikum Würzburg, Würzburg,
Germany
| | - Hermann Kneitz
- Klinik für Dermatologie, Venerologie und Allergologie,
Universitätsklinikum Würzburg, Würzburg,
Germany
| | - Marco Stumpf
- Klinik für Dermatologie, Venerologie und Allergologie,
Universitätsklinikum Würzburg, Würzburg,
Germany
| | - Matthias Goebeler
- Dermatologie, Universitätsklinikum Würzburg Klinik und
Poliklinik für Dermatologie Venerologie und Allergologie,
Würzburg, Germany
| | - Astrid Schmieder
- Klinik für Dermatologie, Venerologie und Allergologie,
Universitätsklinikum Würzburg, Würzburg,
Germany
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9
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Pyoderma Gangrenosum: An Updated Literature Review on Established and Emerging Pharmacological Treatments. Am J Clin Dermatol 2022; 23:615-634. [PMID: 35606650 PMCID: PMC9464730 DOI: 10.1007/s40257-022-00699-8] [Citation(s) in RCA: 52] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/27/2022] [Indexed: 12/12/2022]
Abstract
Pyoderma gangrenosum is a rare inflammatory skin disease classified within the group of neutrophilic dermatoses and clinically characterized by painful, rapidly evolving cutaneous ulcers with undermined, irregular, erythematous-violaceous edges. Pyoderma gangrenosum pathogenesis is complex and involves a profound dysregulation of components of both innate and adaptive immunity in genetically predisposed individuals, with the follicular unit increasingly recognized as the putative initial target. T helper 17/T helper 1-skewed inflammation and exaggerated inflammasome activation lead to a dysregulated neutrophil-dominant milieu with high levels of tumor necrosis factor-α, interleukin (IL)-1β, IL-1α, IL-8, IL-12, IL-15, IL-17, IL-23, and IL-36. Low-evidence studies and a lack of validated diagnostic and response criteria have hindered the discovery and validation of new effective treatments for pyoderma gangrenosum. We review established and emerging treatments for pyoderma gangrenosum. A therapeutic algorithm based on available evidence is also provided. For emerging treatments, we review target molecules and their role in the pathogenesis of pyoderma gangrenosum.
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10
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Flora A, Kozera E, Frew JW. Pyoderma Gangrenosum: A Systematic Review of the Molecular Characteristics of Disease. Exp Dermatol 2022; 31:498-515. [PMID: 35114021 DOI: 10.1111/exd.14534] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Revised: 01/18/2022] [Accepted: 01/30/2022] [Indexed: 11/30/2022]
Abstract
Pyoderma Gangrenosum is a painful recurrent ulcerative neutrophilic dermatosis in which the pathogenesis is incompletely defined. Current evidence suggests that PG is associated with dysregulation of components of both the innate and adaptive immune system with dysregulation of neutrophil function and contribution of the Th17 immune axis. PG can present in numerous heterogeneous clinical presentations and be associated with multiple inflammatory conditions including Rheumatoid Arthritis, inflammatory bowel disease and hidradenitis suppurativa. However, no critical evaluation of the observed molecular characteristics in PG studies in association with their clinical findings has been assessed. Additionally, emerging evidence suggests a potential role for other cell types and immune pathways including B cells, macrophages, autoantibodies, and the complement system in PG although these have not yet been integrated into the pathogenesis of disease. This systematic review aims to critically evaluate the current molecular observations regarding the pathogenesis of PG and discuss associations with clinical characteristics as well as the evidence supporting novel cell types and immune pathways in PG.
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Affiliation(s)
- Akshay Flora
- Ingham Institute for Applied Medical Research.,Department of Dermatology, Liverpool Hospital.,University of New South Wales
| | - Emily Kozera
- Ingham Institute for Applied Medical Research.,Department of Dermatology, Liverpool Hospital
| | - John W Frew
- Ingham Institute for Applied Medical Research.,Department of Dermatology, Liverpool Hospital.,University of New South Wales
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11
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Gheriani GA, Kumar B, Lenert PS. Is There a Place for Complement Inhibition with Monoclonal Anti-C5a Antibody Vilobelimab in the Treatment of Patients with ANCA-associated Vasculitis? Rheumatology (Oxford) 2022. [DOI: 10.17925/rmd.2022.1.2.46] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Recent studies have implicated the complement system in the pathogenesis of antineutrophil cytoplasmic antibody-associated vasculitis (AAV), prompting the development of novel therapeutic agents to target the complement system accordingly. The pivotal role of complement component C5a, in particular, has been the subject of a number of phase II and phase III clinical trials. Indeed, the US Food and Drug Administration has already approved avacopan, an oral C5a receptor inhibitor, as an adjunct for the treatment of active severe AAV, based on its favourable safety profile and non-inferiority to glucocorticoids (GCs) (at Week 26). The novel monoclonal anti-C5a antibody vilobelimab has also been studied in a phase II trial in patients with AAV (IXchange; ClinicalTrials.gov Identifier: NCT03895801). The results appear promising; in addition to decreased GC toxicity index, a smaller number of treatment-emergent adverse events have been observed in vilobelimab-treated patients. However, the study was not powered statistically to compare the efficacy of vilobelimab to standard GC treatment. This editorial summarizes the study findings and outlines potential future directions.
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12
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Amat-Samaranch V, Agut-Busquet E, Vilarrasa E, Puig L. New perspectives on the treatment of hidradenitis suppurativa. Ther Adv Chronic Dis 2021; 12:20406223211055920. [PMID: 34840709 PMCID: PMC8613896 DOI: 10.1177/20406223211055920] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 10/08/2021] [Indexed: 12/25/2022] Open
Abstract
Hidradenitis suppurativa (HS) is a chronic inflammatory skin disease characterized by the presence of painful nodules, abscesses, chronically draining fistulas, and scarring in apocrine gland-bearing areas of the body. The exact pathogenesis of HS is not yet well understood, but there is a consensus in considering HS a multifactorial disease with a genetic predisposition, an inflammatory dysregulation, and an influence of environmental modifying factors. Therapeutic approach of HS is challenging due to the wide clinical manifestations of the disease and the complex pathogenesis. This review describes evidence for effectiveness of current and emerging HS therapies. Topical therapy, systemic treatments, biological agents, surgery, and light therapy have been used for HS with variable results. Adalimumab is the only US Food and Drug Administration (FDA) approved biologic agent for moderate-to-severe HS, but new therapeutic options are being studied, targeting different specific cytokines involved in HS pathogenesis. Comparing treatment outcomes between therapies is difficult due to the lack of randomized controlled trials. Treatment strategy should be selected in concordance to disease severity and requires combination of treatments in most cases.
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Affiliation(s)
- Victoria Amat-Samaranch
- Department of Dermatology, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Mas Casanovas 90, 08041, Barcelona, Spain
| | - Eugènia Agut-Busquet
- Department of Dermatology, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Mas Casanovas 90, 08041, Barcelona, Spain
| | - Eva Vilarrasa
- Department of Dermatology, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Mas Casanovas 90, 08041, Barcelona, Spain
| | - Lluís Puig
- Department of Dermatology, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Mas Casanovas 90, 08041 Barcelona, Spain
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13
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Chouaki Benmansour N, Carvelli J, Vivier E. Complement cascade in severe forms of COVID-19: Recent advances in therapy. Eur J Immunol 2021; 51:1652-1659. [PMID: 33738806 PMCID: PMC8250085 DOI: 10.1002/eji.202048959] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 01/21/2021] [Accepted: 03/11/2021] [Indexed: 12/13/2022]
Abstract
The complement system is an essential component of the innate immune system. The three complement pathways (classical, lectin, alternative) are directly or indirectly activated by the SARS‐CoV‐2 (severe acute respiratory syndrome coronavirus 2). In the most severe forms of COVID‐19, overactivation of the complement system may contribute to the cytokine storm, endothelial inflammation (endotheliitis) and thrombosis. No antiviral drug has yet been shown to be effective in COVID‐19. Therefore, immunotherapies represent a promising therapeutic in the immunopathological phase (following the viral phase) of the disease. Complement blockade, mostly C5a‐C5aR axis blockade, may prevent acute respiratory distress syndrome (ARDS) from worsening or progression to death. Clinical trials are underway.
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Affiliation(s)
- Nassima Chouaki Benmansour
- Assistance Publique des Hôpitaux de Marseille, France.,Département universitaire de médecine générale, Aix Marseille Université, Marseille, France.,Institut Paoli Calmette, Marseille, France
| | - Julien Carvelli
- Assistance Publique des Hôpitaux de Marseille, Hôpital de la Timone, Réanimation des Urgences, France.,Aix Marseille Université, Marseille, France
| | - Eric Vivier
- Innate Pharma Research labs, Marseille, France.,Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France.,Assistance Publique des Hôpitaux de Marseille, Hôpital de la Timone, Marseille-Immunopole, Marseille, France
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14
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Chouaki Benmansour N, Carvelli J, Vivier É. [Involvement of the complement cascade in severe forms of COVID-19]. Med Sci (Paris) 2021; 37:333-341. [PMID: 33835019 DOI: 10.1051/medsci/2021021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
The complement system is an essential component of the innate immune system. Its excessive activation during COVID-19 contributes to cytokine storm, disease-specific endothelial inflammation (endotheliitis) and thrombosis that comes with the disease. Targeted therapies of complement inhibition in COVID-19, in particular blocking the C5a-C5aR1 axis have to be taken into account in the establishment of potential biomarkers and development of therapeutic strategies in the most severe forms of the disease.
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Affiliation(s)
- Nassima Chouaki Benmansour
- Assistance Publique des Hôpitaux de Marseille, 80 rue Brochier, 13005 Marseille, France - Département universitaire de médecine générale, Aix-Marseille Université, 27 boulevard Jean Moulin, 13385 Marseille Cedex 05, France - Institut Paoli Calmettes, 232 boulevard de Sainte-Marguerite, 13009 Marseille, France
| | - Julien Carvelli
- Assistance Publique des Hôpitaux de Marseille, Hôpital de la Timone, Réanimation des urgences, 264 rue Saint-Pierre, 13005 Marseille, France - Aix-Marseille Université, 27 boulevard Jean Moulin, 13385 Marseille Cedex 05, France
| | - Éric Vivier
- Innate Pharma, 117 avenue de Luminy, BP 30191, 13276 Marseille Cedex 9, France - Aix Marseille Université, CNRS, Inserm, CIML, Parc Scientifique et Technologique de Luminy, Case 906, 13288 Marseille Cedex 09, France - Assistance Publique des Hôpitaux de Marseille, Marseille Immunopole, Hôpital de la Timone, 264 rue Saint Pierre, 13385 Marseille Cedex 5, France
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15
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Asavapanumas N, Tradtrantip L, Verkman AS. Targeting the complement system in neuromyelitis optica spectrum disorder. Expert Opin Biol Ther 2021; 21:1073-1086. [PMID: 33513036 DOI: 10.1080/14712598.2021.1884223] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
INTRODUCTION Neuromyelitis optica spectrum disorder (NMOSD) is characterized by central nervous system inflammation and demyelination. In AQP4-IgG seropositive NMOSD, circulating immunoglobulin G (IgG) autoantibodies against astrocyte water channel aquaporin-4 (AQP4) cause tissue injury. Compelling evidence supports a pathogenic role for complement activation following AQP4-IgG binding to AQP4. Clinical studies supported the approval of eculizumab, an inhibitor of C5 cleavage, in AQP4-IgG seropositive NMOSD. AREAS COVERED This review covers in vitro, animal models, and human evidence for complement-dependent and complement-independent tissue injury in AQP4-IgG seropositive NMOSD. Complement targets are discussed, including complement proteins, regulators and anaphylatoxin receptors, and corresponding drug candidates. EXPERT OPINION Though preclinical data support a central pathogenic role of complement activation in AQP4-IgG seropositive NMOSD, they do not resolve the relative contributions of complement-dependent vs. complement-independent disease mechanisms such as antibody-dependent cellular cytotoxicity, T cell effector mechanisms, and direct AQP4-IgG-induced cellular injury. The best evidence that complement-dependent mechanisms predominate in AQP4-IgG seropositive NMOSD comes from eculizumab clinical data. Various drug candidates targeting distinct complement effector mechanisms may offer improved safety and efficacy. However, notwithstanding the demonstrated efficacy of complement inhibition in AQP4-IgG seropositive NMOSD, the ultimate niche for complement inhibition is not clear given multiple drug options with alternative mechanisms of action.Abbreviations: AAV2, Adeno-associated virus 2; ADCC, antibody-dependent cellular cytotoxicity; ANCA, antineutrophilic cytoplasmic autoantibody; AQP4, aquaporin-4; AQP4-IgG, AQP4-immunoglobulin G; C1-INH, C1-esterase inhibitor; C3aR, C3a receptor; C4BP, C4 binding protein; C5aR, C5a receptor; CDC, complement-dependent cytotoxicity; CFHR1, complement factor H related 1; CNS, central nervous system; EAE, experimental autoimmune encephalomyelitis; EndoS, endoglycosidase S; FHL-1, factor-H-like protein 1; GFAP, glial fibrillary acidic protein; Iba-1, ionized calcium-binding adaptor protein-1; IgG, immunoglobulin G; IVIG, intravenous human immunoglobulin G; MAC, membrane attack complex; MBL, maltose-binding lectin; MBP, myelin basic protein; MOG, myelin oligodendrocyte glycoprotein; NK cell, natural killer cell; NMOSD, neuromyelitis optica spectrum disorder; OAP, orthogonal arrays of particles; PNH, paroxysmal nocturnal hemoglobinuria.
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Affiliation(s)
- Nithi Asavapanumas
- Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Lukmanee Tradtrantip
- Departments of Medicine and Physiology, University of California, San Francisco, CA, USA
| | - Alan S Verkman
- Departments of Medicine and Physiology, University of California, San Francisco, CA, USA
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Ram Kumar Pandian S, Arunachalam S, Deepak V, Kunjiappan S, Sundar K. Targeting complement cascade: an alternative strategy for COVID-19. 3 Biotech 2020; 10:479. [PMID: 33088671 PMCID: PMC7571295 DOI: 10.1007/s13205-020-02464-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 10/03/2020] [Indexed: 12/27/2022] Open
Abstract
The complement system is a stakeholder of the innate and adaptive immune system and has evolved as a crucial player of defense with multifaceted biological effects. Activation of three complement pathways leads to consecutive enzyme reactions resulting in complement components (C3 and C5), activation of mast cells and neutrophils by anaphylatoxins (C3a and C5a), the formation of membrane attack complex (MAC) and end up with opsonization. However, the dysregulation of complement cascade leads to unsolicited cytokine storm, inflammation, deterioration of alveolar lining cells, culminating in acquired respiratory destructive syndrome (ARDS). Similar pathogenesis is observed with the middle east respiratory syndrome (MERS), severe acquired respiratory syndrome (SARS), and SARS-CoV-2. Activation of the lectin pathway via mannose-binding lectin associated serine protease 2 (MASP2) is witnessed under discrete viral infections including COVID-19. Consequently, the spontaneous activation and deposits of complement components were traced in animal models and autopsy of COVID-19 patients. Pre-clinical and clinical studies evidence that the inhibition of complement components results in reduced complement deposits on target and non-target tissues, and aid in recovery from the pathological conditions of ARDS. Complement inhibitors (monoclonal antibody, protein, peptide, small molecules, etc.) exhibit great promise in blocking the activity of complement components and its downstream effects under various pathological conditions including SARS-CoV. Therefore, we hypothesize that targeting the potential complement inhibitors and complement cascade to counteract lung inflammation would be a better strategy to treat COVID-19.
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Affiliation(s)
- Sureshbabu Ram Kumar Pandian
- Department of Biotechnology, School of Bio and Chemical Engineering, Kalasalingam Academy of Research and Education, Krishnankoil, Tamilnadu 626126 India
| | - Sankarganesh Arunachalam
- Department of Biotechnology, School of Bio and Chemical Engineering, Kalasalingam Academy of Research and Education, Krishnankoil, Tamilnadu 626126 India
| | - Venkataraman Deepak
- Department of Biotechnology, School of Bio and Chemical Engineering, Kalasalingam Academy of Research and Education, Krishnankoil, Tamilnadu 626126 India
- Department of Human Sciences, University of Derby, London, United Kingdom
| | - Selvaraj Kunjiappan
- Department of Biotechnology, School of Bio and Chemical Engineering, Kalasalingam Academy of Research and Education, Krishnankoil, Tamilnadu 626126 India
| | - Krishnan Sundar
- Department of Biotechnology, School of Bio and Chemical Engineering, Kalasalingam Academy of Research and Education, Krishnankoil, Tamilnadu 626126 India
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