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Tohidi-Esfahani I, Mittal P, Isenberg D, Cohen H, Efthymiou M. Platelets and Thrombotic Antiphospholipid Syndrome. J Clin Med 2024; 13:741. [PMID: 38337435 PMCID: PMC10856779 DOI: 10.3390/jcm13030741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 01/19/2024] [Accepted: 01/23/2024] [Indexed: 02/12/2024] Open
Abstract
Antiphospholipid antibody syndrome (APS) is an autoimmune disorder characterised by thrombosis and the presence of antiphospholipid antibodies (aPL): lupus anticoagulant and/or IgG/IgM anti-β2-glycoprotein I and anticardiolipin antibodies. APS carries significant morbidity for a relatively young patient population from recurrent thrombosis in any vascular bed (arterial, venous, or microvascular), often despite current standard of care, which is anticoagulation with vitamin K antagonists (VKA). Platelets have established roles in thrombosis at any site, and platelet hyperreactivity is clearly demonstrated in the pathophysiology of APS. Together with excess thrombin generation, platelet activation and aggregation are the common end result of all the pathophysiological pathways leading to thrombosis in APS. However, antiplatelet therapies play little role in APS, reserved as a possible option of low dose aspirin in addition to VKA in arterial or refractory thrombosis. This review outlines the current evidence and mechanisms for excessive platelet activation in APS, how it plays a central role in APS-related thrombosis, what evidence for antiplatelets is available in clinical outcomes studies, and potential future avenues to define how to target platelet hyperreactivity better with minimal impact on haemostasis.
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Affiliation(s)
- Ibrahim Tohidi-Esfahani
- Haematology Department, Concord Repatriation General Hospital, Sydney, NSW 2139, Australia
- Sydney Medical School, Faculty of Medicine and Health, University of Sydney, Sydney, NSW 2050, Australia
| | - Prabal Mittal
- Department of Haematology, University College London Hospitals NHS Foundation Trust, London NW1 2BU, UK
- Haemostasis Research Unit, Department of Haematology, University College London, London WC1E 6DD, UK;
| | - David Isenberg
- Centre for Rheumatology, Division of Medicine, University College London, London WC1E 6JF, UK
| | - Hannah Cohen
- Department of Haematology, University College London Hospitals NHS Foundation Trust, London NW1 2BU, UK
- Haemostasis Research Unit, Department of Haematology, University College London, London WC1E 6DD, UK;
| | - Maria Efthymiou
- Haemostasis Research Unit, Department of Haematology, University College London, London WC1E 6DD, UK;
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Riitano G, Capozzi A, Recalchi S, Augusto M, Conti F, Misasi R, Garofalo T, Sorice M, Manganelli V. Role of Lipid Rafts on LRP8 Signaling Triggered by Anti-β2-GPI Antibodies in Endothelial Cells. Biomedicines 2023; 11:3135. [PMID: 38137358 PMCID: PMC10740635 DOI: 10.3390/biomedicines11123135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 11/16/2023] [Accepted: 11/23/2023] [Indexed: 12/24/2023] Open
Abstract
Antiphospholipid antibody syndrome is an autoimmune disease characterized by thrombosis and/or pregnancy morbidity in association with circulating antiphospholipid antibodies, mainly anti-β2 glycoprotein 1 antibodies (anti-β2-GPI antibodies). Previous studies demonstrated that the signaling pathway may involve lipid rafts, plasma membrane microdomains enriched in glycosphingolipid and cholesterol. In this study, we analyzed the signaling pathway of LRP8/ApoER2, a putative receptor of anti-β2-GPI antibodies, through lipid rafts in human endothelial cells. LRP8, Dab2 and endothelial nitric oxide synthase (e-NOS) phosphorylation were evaluated using Western blot, Nitric Oxide (NO) production with cytofluorimetric analysis, LRP8 enrichment in lipid rafts via sucrose gradient fractionation, and scanning confocal microscopy analysis of its association with ganglioside GM1 was also conducted. The analyses demonstrated that affinity-purified anti-β2-GPI antibodies induced LRP8 and Dab-2 phosphorylation, together with a significant decrease in e-NOS phosphorylation, with consequent decrease in NO intracellular production. These effects were almost completely prevented by Methyl-β-cyclodextrin (MβCD), indicating the involvement of lipid rafts. It was supported with the observation of LRP8 enrichment in lipid raft fractions and its association with ganglioside GM1, detected with scanning confocal microscopy. These findings demonstrate that LRP8 signaling triggered by anti-β2-GPI antibodies in endothelial cells occurs through lipid rafts. It represents a new task for valuable therapeutic approaches, such as raft-targeted therapy, including cyclodextrins and statins.
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Affiliation(s)
- Gloria Riitano
- Department of Experimental Medicine, “Sapienza” University of Rome, 00161 Rome, Italy; (G.R.); (A.C.); (S.R.); (R.M.); (T.G.); (V.M.)
| | - Antonella Capozzi
- Department of Experimental Medicine, “Sapienza” University of Rome, 00161 Rome, Italy; (G.R.); (A.C.); (S.R.); (R.M.); (T.G.); (V.M.)
| | - Serena Recalchi
- Department of Experimental Medicine, “Sapienza” University of Rome, 00161 Rome, Italy; (G.R.); (A.C.); (S.R.); (R.M.); (T.G.); (V.M.)
| | | | - Fabrizio Conti
- Rheumatology Unit, Department of Clinical Internal, Anesthesiological and Cardiovascular Sciences, “Sapienza” University of Rome, 00161 Rome, Italy;
| | - Roberta Misasi
- Department of Experimental Medicine, “Sapienza” University of Rome, 00161 Rome, Italy; (G.R.); (A.C.); (S.R.); (R.M.); (T.G.); (V.M.)
| | - Tina Garofalo
- Department of Experimental Medicine, “Sapienza” University of Rome, 00161 Rome, Italy; (G.R.); (A.C.); (S.R.); (R.M.); (T.G.); (V.M.)
| | - Maurizio Sorice
- Department of Experimental Medicine, “Sapienza” University of Rome, 00161 Rome, Italy; (G.R.); (A.C.); (S.R.); (R.M.); (T.G.); (V.M.)
| | - Valeria Manganelli
- Department of Experimental Medicine, “Sapienza” University of Rome, 00161 Rome, Italy; (G.R.); (A.C.); (S.R.); (R.M.); (T.G.); (V.M.)
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Santos GDM, Saldanha A, Orsi FA. Should we be targeting type 1 interferons in antiphospholipid syndrome? Clin Immunol 2023; 255:109754. [PMID: 37678720 DOI: 10.1016/j.clim.2023.109754] [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: 05/27/2023] [Revised: 08/13/2023] [Accepted: 08/28/2023] [Indexed: 09/09/2023]
Abstract
Systemic autoimmune diseases are characterized by increased production of type I interferon (IFN-1) and upregulation of IFN-1-inducible genes, suggesting an important role of the IFN-1 pathway in their pathogenesis. Recent studies have demonstrated increased IFN-1 expression in both primary and secondary antiphospholipid syndrome (APS), along with increased toll-like receptor type 9 activity and plasmacytoid dendritic cell function. The increasing knowledge of the association between IFN-1 and APS pathology may provide a rationale for conducting clinical trials to assess the efficacy of IFN-1-targeting drugs in reducing APS-related complications. In this narrative review, we summarize the current knowledge on the role of IFN-1 in APS pathogenesis, explore its clinical implications, and examine the existing evidence regarding therapeutic options that have been investigated to date.
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Affiliation(s)
- Gabrielle de Mello Santos
- Hospital das Clinicas of University of São Paulo Medical School (HCFMUSP), Brazil; HEMORIO - State Institute of Hematology "Arthur de Siqueira Cavalcanti", Brazil
| | - Artur Saldanha
- Hospital das Clinicas of University of São Paulo Medical School (HCFMUSP), Brazil; HEMOAL - Hematology and Hemotherapy Center of Alagoas, Brazil
| | - Fernanda Andrade Orsi
- Hospital das Clinicas of University of São Paulo Medical School (HCFMUSP), Brazil; Department of Pathology, Faculty of Medical Sciences of the University of Campinas (UNICAMP), Brazil.
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Sorice M, Profumo E, Capozzi A, Recalchi S, Riitano G, Di Veroli B, Saso L, Buttari B. Oxidative Stress as a Regulatory Checkpoint in the Production of Antiphospholipid Autoantibodies: The Protective Role of NRF2 Pathway. Biomolecules 2023; 13:1221. [PMID: 37627286 PMCID: PMC10452087 DOI: 10.3390/biom13081221] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/13/2023] [Accepted: 08/03/2023] [Indexed: 08/27/2023] Open
Abstract
Oxidative stress is a well-known hallmark of Antiphospholipid Antibody Syndrome (APS), a systemic autoimmune disease characterized by arterial and venous thrombosis and/or pregnancy morbidity. Oxidative stress may affect various signaling pathways and biological processes, promoting dysfunctional immune responses and inflammation, inducing apoptosis, deregulating autophagy and impairing mitochondrial function. The chronic oxidative stress and the dysregulation of the immune system leads to the loss of tolerance, which drives autoantibody production and inflammation with the development of endothelial dysfunction. In particular, anti-phospholipid antibodies (aPL), which target phospholipids and/or phospholipid binding proteins, mainly β-glycoprotein I (β-GPI), play a functional role in the cell signal transduction pathway(s), thus contributing to oxidative stress and thrombotic events. An oxidation-antioxidant imbalance may be detected in the blood of patients with APS as a reflection of disease progression. This review focuses on functional evidence highlighting the role of oxidative stress in the initiation and progression of APS. The protective role of food supplements and Nuclear Factor Erythroid 2-Related Factor 2 (NRF2) activators in APS patients will be summarized to point out the potential of these therapeutic approaches to reduce APS-related clinical complications.
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Affiliation(s)
- Maurizio Sorice
- Department of Experimental Medicine, Sapienza University of Rome, 00161 Rome, Italy; (M.S.); (A.C.); (S.R.); (G.R.)
| | - Elisabetta Profumo
- Department of Cardiovascular and Endocrine-metabolic Diseases and Aging, Istituto Superiore di Sanità, 00161 Rome, Italy; (E.P.); (B.D.V.)
| | - Antonella Capozzi
- Department of Experimental Medicine, Sapienza University of Rome, 00161 Rome, Italy; (M.S.); (A.C.); (S.R.); (G.R.)
| | - Serena Recalchi
- Department of Experimental Medicine, Sapienza University of Rome, 00161 Rome, Italy; (M.S.); (A.C.); (S.R.); (G.R.)
| | - Gloria Riitano
- Department of Experimental Medicine, Sapienza University of Rome, 00161 Rome, Italy; (M.S.); (A.C.); (S.R.); (G.R.)
| | - Benedetta Di Veroli
- Department of Cardiovascular and Endocrine-metabolic Diseases and Aging, Istituto Superiore di Sanità, 00161 Rome, Italy; (E.P.); (B.D.V.)
| | - Luciano Saso
- Department of Physiology and Pharmacology “Vittorio Erspamer”, Sapienza University of Rome, 00185 Rome, Italy;
| | - Brigitta Buttari
- Department of Cardiovascular and Endocrine-metabolic Diseases and Aging, Istituto Superiore di Sanità, 00161 Rome, Italy; (E.P.); (B.D.V.)
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5
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Granada-Gómez M, Velásquez-Berrío M, Molina CR, Martín SS, Escudero C, Alvarez AM, Cadavid AP. Modulation of the activation of endothelial nitric oxide synthase and nitrosative stress biomarkers by aspirin triggered lipoxins: A possible mechanism of action of aspirin in the antiphospholipid syndrome. Am J Reprod Immunol 2023; 90:e13753. [PMID: 37491919 DOI: 10.1111/aji.13753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 06/20/2023] [Accepted: 07/04/2023] [Indexed: 07/27/2023] Open
Abstract
PROBLEM Antiphospholipid syndrome (APS) is characterized by the clinical manifestation of vascular thrombosis (VT) or pregnancy morbidity (PM) and antiphospholipid antibodies (aPL) that can modify the nitric oxide production. Low-dose aspirin is used in the prevention and treatment of diverse alterations of pregnancy. One of the mechanisms of action of aspirin is to induce the production of aspirin-triggered-lipoxins (ATL). The aim of this study was to evaluate the modulatory effect of ATL over the activation of endothelial nitric oxide synthase (eNOS) and nitrosative stress biomarkers induced by aPL. METHODS We used polyclonal IgG and sera from women with aPL and PM/VT or VT only, and from women with PM only and positive for non-criteria aPL (SN-OAPS). In these sera, biomarkers of nitrosative stress (nitrites and nitrotyrosine) were measured. The protein expression of nitrotyrosine and the phosphorylation of eNOS (at Ser1177) were estimated in human umbilical vein endothelial cells (HUVECs) stimulated with polyclonal IgG with or without ATL. RESULTS Women with SN-OAPS showed increased circulating levels of nitrites and nitrotyrosine. Likewise, polyclonal IgG from either SN-OAPS or VT patients stimulated nitrotyrosine expression in HUVECs. ATL decreased the nitrotyrosine expression induced by polyclonal IgG from the SN-OAPS group. ATL also recovered the reduced eNOS phosphorylation at Ser1177 in HUVECs stimulated with polyclonal IgG from women with PM/VT or SN-OAPS. CONCLUSIONS Increased nitrosative stress present in serum of women with SN-OAPS is associated with IgG-mediated impaired endothelial NO synthesis in endothelial cells. ATL prevent these cellular changes.
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Affiliation(s)
- Manuel Granada-Gómez
- Grupo Reproducción, Facultad de Medicina, Dpto. Microbiología y Parasitología, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Manuela Velásquez-Berrío
- Grupo Reproducción, Facultad de Medicina, Dpto. Microbiología y Parasitología, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Carolina Rúa Molina
- Grupo de Investigación en Trombosis, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Sebastián San Martín
- Biomedical Research Center School of Medicine, Universidad de Valparaiso, Valparaiso, Chile
- Group of Research and Innovation in Vascular Health (GRIVAS Health), Chillan, Chile
| | - Carlos Escudero
- Vascular Physiology Laboratory, Basic Sciences Department, Faculty of Sciences, Universidad del Bio-Bio, Chillán, Chile
- Group of Research and Innovation in Vascular Health (GRIVAS Health), Chillan, Chile
- Red Iberoamericana de Alteraciones Vasculares Asociadas a TRanstornos del EMbarazo (RIVATREM)
| | - Angela M Alvarez
- Grupo Reproducción, Facultad de Medicina, Dpto. Microbiología y Parasitología, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Angela P Cadavid
- Grupo Reproducción, Facultad de Medicina, Dpto. Microbiología y Parasitología, Universidad de Antioquia UdeA, Medellín, Colombia
- Grupo de Investigación en Trombosis, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
- Red Iberoamericana de Alteraciones Vasculares Asociadas a TRanstornos del EMbarazo (RIVATREM)
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Solé C, Royo M, Sandoval S, Moliné T, Cortés-Hernández J. Small-Extracellular-Vesicle-Derived miRNA Profile Identifies miR-483-3p and miR-326 as Regulators in the Pathogenesis of Antiphospholipid Syndrome (APS). Int J Mol Sci 2023; 24:11607. [PMID: 37511365 PMCID: PMC10380201 DOI: 10.3390/ijms241411607] [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: 05/29/2023] [Revised: 07/06/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
Primary antiphospholipid syndrome (PAPS) is a systemic autoimmune disease associated with recurrent thrombosis and/or obstetric morbidity with persistent antiphospholipid antibodies (aPL). Although these antibodies drive endothelial injury and thrombophilia, the underlying molecular mechanism is still unclear. Small extracellular vesicles (sEVs) contain miRNAs, key players in intercellular communication. To date, the effects of miRNA-derived sEVs in PAPS are not well understood. We characterised the quantity, cellular origin and miRNA profile of sEVs isolated from thrombotic APS patients (PAPS, n = 50), aPL-carrier patients (aPL, n = 30) and healthy donors (HD, n = 30). We found higher circulating sEVs mainly of activated platelet origin in PAPS and aPL patients compared to HD, that were highly engulfed by HUVECs and monocyte. Through miRNA-sequencing analysis, we identified miR-483-3p to be differentially upregulated in sEVs from patients with PAPS and aPL, and miR-326 to be downregulated only in PAPS sEVs. In vitro studies showed that miR-483-3p overexpression in endothelial cells induced an upregulation of the PI3K-AKT pathway that led to endothelial proliferation/dysfunction. MiR-326 downregulation induced NOTCH pathway activation in monocytes with the upregulation of NFKB1, tissue factor and cytokine production. These results provide evidence that miRNA-derived sEVs contribute to APS pathogenesis by producing endothelial cell proliferation, monocyte activation and adhesion/procoagulant factors.
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Affiliation(s)
- Cristina Solé
- Rheumatology Research Group—Lupus Unit, Vall d’Hebrón University Hospital, Vall d’Hebrón Research Institute (VHIR), Universitat Autònoma de Barcelona (UAB), 08193 Barcelona, Spain; (M.R.); (S.S.); (J.C.-H.)
| | - Maria Royo
- Rheumatology Research Group—Lupus Unit, Vall d’Hebrón University Hospital, Vall d’Hebrón Research Institute (VHIR), Universitat Autònoma de Barcelona (UAB), 08193 Barcelona, Spain; (M.R.); (S.S.); (J.C.-H.)
| | - Sebastian Sandoval
- Rheumatology Research Group—Lupus Unit, Vall d’Hebrón University Hospital, Vall d’Hebrón Research Institute (VHIR), Universitat Autònoma de Barcelona (UAB), 08193 Barcelona, Spain; (M.R.); (S.S.); (J.C.-H.)
| | - Teresa Moliné
- Department of Pathology, Vall d’Hebrón University Hospital, 08035 Barcelona, Spain;
| | - Josefina Cortés-Hernández
- Rheumatology Research Group—Lupus Unit, Vall d’Hebrón University Hospital, Vall d’Hebrón Research Institute (VHIR), Universitat Autònoma de Barcelona (UAB), 08193 Barcelona, Spain; (M.R.); (S.S.); (J.C.-H.)
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7
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Yun Z, Duan L, Liu X, Cai Q, Li C. An update on the biologics for the treatment of antiphospholipid syndrome. Front Immunol 2023; 14:1145145. [PMID: 37275894 PMCID: PMC10237350 DOI: 10.3389/fimmu.2023.1145145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 05/04/2023] [Indexed: 06/07/2023] Open
Abstract
Antiphospholipid syndrome (APS) is a systemic autoimmune disease characterized by thrombosis and pregnancy morbidity with the persistent presence of antiphospholipid antibodies (aPLs). Although anticoagulation is the primary treatment for APS, it fails in approximately 20-30% of obstetric APS cases and more than 30% of thrombotic APS cases. Therefore, there is a need for new, targeted treatments beyond anticoagulants. Biologics, such as rituximab and eculizumab, have been recommended for refractory catastrophic APS. This review focuses on the recent advancements in the pathogenesis of APS and explores the potential of targeted treatments, including eculizumab, rituximab, belimumab, daratumumab, obinutuzumab, and anti-TNF-α antibodies, for APS management.
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Affiliation(s)
- Zelin Yun
- Department of Rheumatology and Immunology, Peking University People’s Hospital, Beijing, China
- Beijing Key Laboratory for Rheumatism and Immune Diagnosis (BZ0135), Peking University People’s Hospital, Beijing, China
| | - Lizhi Duan
- Department of Rheumatology and Immunology, Gangkou Hospital of Hebei Port Group Company Limited, Qinhuangdao, Hebei, China
| | - Xiangjun Liu
- Department of Rheumatology and Immunology, Peking University People’s Hospital, Beijing, China
- Beijing Key Laboratory for Rheumatism and Immune Diagnosis (BZ0135), Peking University People’s Hospital, Beijing, China
| | - Qingmeng Cai
- Department of Rheumatology and Immunology, Peking University People’s Hospital, Beijing, China
- Beijing Key Laboratory for Rheumatism and Immune Diagnosis (BZ0135), Peking University People’s Hospital, Beijing, China
| | - Chun Li
- Department of Rheumatology and Immunology, Peking University People’s Hospital, Beijing, China
- Beijing Key Laboratory for Rheumatism and Immune Diagnosis (BZ0135), Peking University People’s Hospital, Beijing, China
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Patsouras M, Alexopoulou E, Foutadakis S, Tsiki E, Karagianni P, Agelopoulos M, Vlachoyiannopoulos PG. Antiphospholipid antibodies induce proinflammatory and procoagulant pathways in endothelial cells. J Transl Autoimmun 2023; 6:100202. [PMID: 37216142 PMCID: PMC10197110 DOI: 10.1016/j.jtauto.2023.100202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 03/01/2023] [Accepted: 04/30/2023] [Indexed: 05/24/2023] Open
Abstract
Antiphospholipid syndrome (APS) is an autoimmune thrombophilia characterized by recurrent thrombotic events and/or pregnancy morbidity in the presence of antiphospholipid antibodies detected either as anti-cardiolipin, anti-β2 Glycoprotein I (anti-β2GPI) or Lupus anticoagulant (LA). Endothelial deregulation characterizes the syndrome. To address gene expression changes accompanying the development of autoimmune phenotype in endothelial cells in the context of APS, we performed transcriptomics analysis in Human Umbilical Vein Endothelial Cells (HUVECs) stimulated with IgG from APS patients and β2GPI, followed by intersection of RNA-seq data with published microarray and ChIP-seq results (Chromatin Immunoprecipitation). Our strategy revealed that during HUVEC activation diverse signaling pathways such as TNF-α, TGF-β, MAPK38, and Hippo are triggered as indicated by Gene Ontology (GO) classification and pathway analysis. Finally, cell biology approaches performed side-by-side in naïve and stimulated cultured HUVECs, as well as, in placenta specimens derived from Healthy donors (HDs) and APS-patients verified the evolution of an APS-characteristic gene expression program in endothelial cells during the initial stages of the disease's development.
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Affiliation(s)
- Markos Patsouras
- Department of Pathophysiology, Medical School, National and Kapodistrian University of Athens, Greece
| | - Eirini Alexopoulou
- Department of Pathophysiology, Medical School, National and Kapodistrian University of Athens, Greece
| | - Spyros Foutadakis
- Center of Basic Research, Biomedical Research Foundation, Academy of Athens, 4 Soranou Ephessiou Street, Athens, 11527, Greece
| | - Eirini Tsiki
- Department of Pathophysiology, Medical School, National and Kapodistrian University of Athens, Greece
| | - Panagiota Karagianni
- Department of Pathophysiology, Medical School, National and Kapodistrian University of Athens, Greece
| | - Marios Agelopoulos
- Center of Basic Research, Biomedical Research Foundation, Academy of Athens, 4 Soranou Ephessiou Street, Athens, 11527, Greece
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Abstract
Antiphospholipid syndrome (APS) is a thrombo-inflammatory disease propelled by circulating autoantibodies that recognize cell surface phospholipids and phospholipid binding proteins. The result is an increased risk of thrombotic events, pregnancy morbidity, and various other autoimmune and inflammatory complications. Although antiphospholipid syndrome was first recognized in patients with lupus, the stand alone presentation of antiphospholipid syndrome is at least equally common. Overall, the diagnosis appears to affect at least one in 2000 people. Studies of antiphospholipid syndrome pathogenesis have long focused on logical candidates such as coagulation factors, endothelial cells, and platelets. Recent work has shed light on additional potential therapeutic targets within the innate immune system, including the complement system and neutrophil extracellular traps. Vitamin K antagonists remain the mainstay of treatment for most patients with thrombotic antiphospholipid syndrome and, based on current data, appear superior to the more targeted direct oral anticoagulants. The potential role of immunomodulatory treatments in antiphospholipid syndrome management is receiving increased attention. As for many systemic autoimmune diseases, the most important future direction is to more precisely identify mechanistic drivers of disease heterogeneity in pursuit of unlocking personalized and proactive treatments for patients.
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Affiliation(s)
- Jason S Knight
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - D Ware Branch
- James R. and Jo Scott Research Chair, Department of Obstetrics and Gynecology, University of Utah Health and Intermountain Healthcare, Salt Lake City, Utah, USA
| | - Thomas L Ortel
- Division of Hematology, Departments of Medicine and Pathology, Duke University, Durham, North Carolina, USA
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10
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Root-Bernstein R. From Co-Infections to Autoimmune Disease via Hyperactivated Innate Immunity: COVID-19 Autoimmune Coagulopathies, Autoimmune Myocarditis and Multisystem Inflammatory Syndrome in Children. Int J Mol Sci 2023; 24:ijms24033001. [PMID: 36769320 PMCID: PMC9917907 DOI: 10.3390/ijms24033001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/21/2023] [Accepted: 01/23/2023] [Indexed: 02/05/2023] Open
Abstract
Neutrophilia and the production of neutrophil extracellular traps (NETs) are two of many measures of increased inflammation in severe COVID-19 that also accompany its autoimmune complications, including coagulopathies, myocarditis and multisystem inflammatory syndrome in children (MIS-C). This paper integrates currently disparate measures of innate hyperactivation in severe COVID-19 and its autoimmune complications, and relates these to SARS-CoV-2 activation of innate immunity. Aggregated data include activation of Toll-like receptors (TLRs), nucleotide-binding oligomerization domain (NOD) receptors, NOD leucine-rich repeat and pyrin-domain-containing receptors (NLRPs), retinoic acid-inducible gene I (RIG-I) and melanoma-differentiation-associated gene 5 (MDA-5). SARS-CoV-2 mainly activates the virus-associated innate receptors TLR3, TLR7, TLR8, NLRP3, RIG-1 and MDA-5. Severe COVID-19, however, is characterized by additional activation of TLR1, TLR2, TLR4, TLR5, TLR6, NOD1 and NOD2, which are primarily responsive to bacterial antigens. The innate activation patterns in autoimmune coagulopathies, myocarditis and Kawasaki disease, or MIS-C, mimic those of severe COVID-19 rather than SARS-CoV-2 alone suggesting that autoimmunity follows combined SARS-CoV-2-bacterial infections. Viral and bacterial receptors are known to synergize to produce the increased inflammation required to support autoimmune disease pathology. Additional studies demonstrate that anti-bacterial antibodies are also required to account for known autoantigen targets in COVID-19 autoimmune complications.
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11
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Capozzi A, Manganelli V, Riitano G, Caissutti D, Longo A, Garofalo T, Sorice M, Misasi R. Advances in the Pathophysiology of Thrombosis in Antiphospholipid Syndrome: Molecular Mechanisms and Signaling through Lipid Rafts. J Clin Med 2023; 12:jcm12030891. [PMID: 36769539 PMCID: PMC9917860 DOI: 10.3390/jcm12030891] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/17/2023] [Accepted: 01/19/2023] [Indexed: 01/25/2023] Open
Abstract
The pathological features of antiphospholipid syndrome (APS) are related to the activity of circulating antiphospholipid antibodies (aPLs) associated with vascular thrombosis and obstetric complications. Indeed, aPLs are not only disease markers, but also play a determining pathogenetic role in APS and exert their effects through the activation of cells and coagulation factors and inflammatory mediators for the materialization of the thromboinflammatory pathogenetic mechanism. Cellular activation in APS necessarily involves the interaction of aPLs with target receptors on the cell membrane, capable of triggering the signal transduction pathway(s). This interaction occurs at specific microdomains of the cell plasma membrane called lipid rafts. In this review, we focus on the key role of lipid rafts as signaling platforms in the pathogenesis of APS, and propose this pathogenetic step as a strategic target of new therapies in order to improve classical anti-thrombotic approaches with "new" immunomodulatory drugs.
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12
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Targeting thromboinflammation in antiphospholipid syndrome. JOURNAL OF THROMBOSIS AND HAEMOSTASIS : JTH 2022; 21:744-757. [PMID: 36696191 DOI: 10.1016/j.jtha.2022.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 12/02/2022] [Accepted: 12/05/2022] [Indexed: 01/26/2023]
Abstract
Antiphospholipid syndrome (APS) is a systemic autoimmune disease, where persistent presence of antiphospholipid antibodies (aPL) leads to thrombotic and obstetric complications. APS is a paradigmatic thromboinflammatory disease. Thromboinflammation is a pathophysiological mechanism coupling inflammation and thrombosis, which contributes to the pathophysiology of cardiovascular disease. APS can serve as a model to unravel mechanisms of thromboinflammation and the relationship between innate immune cells and thrombosis. Monocytes are activated by aPL into a proinflammatory and procoagulant phenotype, producing proinflammatory cytokines such as tumor necrosis factor α, interleukin 6, as well as tissue factor. Important cellular signaling pathways involved are the NF-κB-pathway, mammalian target of rapamycin (mTOR) signaling, and the NOD-, LRR-, and pyrin domain-containing protein 3 inflammasome. All of these may serve as future therapeutic targets. Neutrophils produce neutrophil extracellular traps in response to aPL, and this leads to thrombosis. Thrombosis in APS also stems from increased interaction of neutrophils with endothelial cells through P-selectin glycoprotein ligand-1. NETosis can be targeted not only with several experimental therapeutics, such as DNase, but also through the redirection of current therapies such as defibrotide and the antiplatelet agent dipyridamole. Activation of platelets by aPL leads to a procoagulant phenotype. Platelet-leukocyte interactions are increased, possibly mediated by increased levels of soluble P-selectin and soluble CD40-ligand. Platelet-directed future treatment options involve the inhibition of several platelet receptors activated by aPL, as well as mTOR inhibition. This review discusses mechanisms underlying thromboinflammation in APS that present targetable therapeutic options, some of which may be generalizable to other thromboinflammatory diseases.
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Antiphospholipid Antibody Syndrome-Associated Increased Surface Expression of VLA4 Integrin on Human Monocytes. Biomedicines 2022; 10:biomedicines10102341. [PMID: 36289603 PMCID: PMC9598317 DOI: 10.3390/biomedicines10102341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 09/09/2022] [Accepted: 09/13/2022] [Indexed: 11/16/2022] Open
Abstract
Antiphospholipid syndrome (APS) is a systemic autoimmune disorder characterized by thrombosis and/or obstetric complications in the presence of antiphospholipid antibodies (aPL). Catastrophic APS (CAPS) is the most severe form of the disease, in which microvascular thromboses develop rapidly, leading to multiorgan failure. Monocytes, along with endothelial cells, are critical players in the pathogenesis of APS. Recruitment of these cells to the site of injury/inflammation involves a series of events, including capture, rolling, adhesion enhancement, and transmigration, which are controlled by surface adhesion molecules. The aim of our study was to investigate the surface adhesion profile of monocytes from APS patients and monocytes stimulated in vitro with aPL from a CAPS patient. The surface expression of the adhesion molecules LFA1, L-selectin, MAC1, PSGL1, and VLA4 was analyzed by flow cytometry. To our knowledge, this preliminary study was the first to show that VLA4 was significantly increased on the surface of monocytes from APS patients. Moreover, in vitro stimulations mimicking CAPS showed an even greater increase in VLA4. Our data suggest that the surface adhesion profile on monocytes is altered in APS and CAPS and may be involved in the thrombotic pathophysiology of the disease by enhancing monocyte adhesion.
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14
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Asif S, Bali A, Dang AK, Gonzalez DA, Kumar R. Neurological and Neuropsychiatric Manifestations of Antiphospholipid-Antibody Syndrome (APS). Cureus 2022; 14:e26022. [PMID: 35865415 PMCID: PMC9293251 DOI: 10.7759/cureus.26022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/16/2022] [Indexed: 02/01/2023] Open
Abstract
Antiphospholipid antibody syndrome (APS) is an autoimmune disorder mediated by the presence of a group of autoantibodies, specifically the anticardiolipin antibody (aCL), the beta-2 glycoprotein I (β2GPI), and the lupus anticoagulant (LA). Patients diagnosed with antiphospholipid antibody syndrome (APS) present with many symptoms, the most common being the consequence of thrombotic events that can be catastrophic and lead to mild to severe residual disabilities over a significant amount of time and can impair the quality of life. These events are often present in the younger population. Many times, these thrombotic events are heralded by a spectrum of psychiatric symptoms, which when worked up in the right direction may hint toward an oncoming thrombotic event and may potentially prevent those events by prompting primary prophylaxis treatment by the treating physician. In this review, we aim to comprehensively put forth the many neurological and neuropsychiatric manifestations of APS, their pathology, and management.
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15
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Melayah S, Ghozzi M, Mankaï A, Mechi F, Ghedira I. Frequency of serological markers of rheumatoid arthritis in patients with IgA anti-β2 glycoprotein I antibodies. J Clin Lab Anal 2022; 36:e24537. [PMID: 35666694 PMCID: PMC9279944 DOI: 10.1002/jcla.24537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/28/2022] [Accepted: 05/22/2022] [Indexed: 11/11/2022] Open
Abstract
Aim To determine the frequency of serological markers of RA in patients with anti‐β2 glycoprotein I antibodies (aβ2GPI) of IgA isotype. Material and Methods A retrospective study was conducted on 67 patients with aβ2GPI‐IgA. Ninety healthy blood donors (HBD) were used as a control group. IgG anti‐cyclic citrullinated peptides antibodies (CCP‐Ab) and rheumatoid factors (RF) IgG, IgA, and IgM were detected by enzyme‐linked immunosorbent assay (ELISA). Results Seventeen patients and eight HBD had CCP‐Ab and/or RF (25.4% vs. 8.9%, p = 0.005, CI 95% [14.95; 35.79], odds ratio = 3.5). The frequency of CCP‐Ab was significantly higher in patients than in healthy subjects (14.9% vs. 3.3%, p = 0.009). IgA isotype of RF was significantly higher in patients than in controls (7.5% vs. 0%, p = 0.02). In male patients, CCP‐Ab and/or RF were more frequent than in healthy male subjects (37.5% vs. 11.8%, p = 0.02). In patients, no correlation was found between the levels of aβ2GPI‐IgA and CCP‐Ab (r = 0.082, p = 0.51). There was no correlation between the level aβ2GPI‐IgA and the level of the isotypes of RF (IgG, IgA, and IgM) in patients (r = 0.1, p = 0.37; r = 0.17, p = 0.17 and r = 0.07, p = 0.59 respectively). Conclusion Frequencies of CCP‐Ab and RF are high in patients with aβ2GPI‐IgA suggesting that these patients are susceptible to developing RA.
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Affiliation(s)
- Sarra Melayah
- Laboratory of Immunology, Farhat Hached Hospital, Sousse, Tunisia.,Department of Immunology, Faculty of Pharmacy, Monastir University, Monastir, Tunisia.,LR12SP11, Biochemistry Department, Sahloul University Hospital, Sousse, Tunisia
| | - Mariem Ghozzi
- Laboratory of Immunology, Farhat Hached Hospital, Sousse, Tunisia.,Department of Immunology, Faculty of Pharmacy, Monastir University, Monastir, Tunisia.,Research Unit "Epidemiology and Immunogenetics of Viral Infections, LR14SP02", Sahloul University Hospital, Sousse, Tunisia
| | - Amani Mankaï
- Laboratory of Immunology, Farhat Hached Hospital, Sousse, Tunisia.,High School of Sciences and Techniques of Health, Tunis El Manar University, Tunis, Tunisia.,Research Unit "Obesity: Etiopathology and Treatment, UR18ES01", National Institute of Nutrition and Food Technology, Tunis, Tunisia
| | - Fatma Mechi
- Laboratory of Immunology, Farhat Hached Hospital, Sousse, Tunisia.,Department of Immunology, Faculty of Pharmacy, Monastir University, Monastir, Tunisia
| | - Ibtissem Ghedira
- Laboratory of Immunology, Farhat Hached Hospital, Sousse, Tunisia.,Department of Immunology, Faculty of Pharmacy, Monastir University, Monastir, Tunisia
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16
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Anti-β2-GPI Antibodies Induce Endothelial Cell Expression of Tissue Factor by LRP6 Signal Transduction Pathway Involving Lipid Rafts. Cells 2022; 11:cells11081288. [PMID: 35455968 PMCID: PMC9025633 DOI: 10.3390/cells11081288] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 03/25/2022] [Accepted: 03/28/2022] [Indexed: 12/03/2022] Open
Abstract
In this study we analyzed whether anti-β2-GPI antibodies from patients with APS induce the endothelial cell expression of Tissue Factor (TF) by a LRP6 signal transduction pathway involving lipid rafts. HUVEC were stimulated with affinity purified anti-β2-GPI antibodies. Both LRP6 and β-catenin phosphorylation, as well as TF expression, were evaluated by western blot. Results demonstrated that triggering with affinity purified anti-β2-GPI antibodies induced LRP6 phosphorylation with consequent β-catenin activation, leading to TF expression on the cell surface. Interestingly, the lipid rafts affecting agent methyl-β-cyclodextrin as well as the LRP6 inhibitor Dickkopf 1 (DKK1) partially reduced the anti-β2-GPI antibodies effect, indicating that the anti-β2-GPI effects on TF expression may depend on a signalling transduction pathway involving both lipid rafts and LRP6. An interaction between β2-GPI, LRP6 and PAR-2 within these microdomains was demonstrated by gradient fractionation and coimmunoprecipitation experiments. Thus, anti-β2-GPI antibodies react with their target antigen likely associated to LRP6 and PAR-2 within plasma membrane lipid rafts of the endothelial cell. Anti-β2-GPI binding triggers β-catenin phosphorylation, leading to a procoagulant phenotype characterized by TF expression. These findings deal with a novel signal transduction pathway which provides new insight in the APS pathogenesis, improving the knowledge of valuable therapeutic target(s).
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17
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Killian M, van Mens TE. Risk of Thrombosis, Pregnancy Morbidity or Death in Antiphospholipid Syndrome. Front Cardiovasc Med 2022; 9:852777. [PMID: 35299976 PMCID: PMC8921454 DOI: 10.3389/fcvm.2022.852777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 02/07/2022] [Indexed: 12/12/2022] Open
Abstract
The antiphospholipid syndrome is an autoimmune disease characterized by thrombosis and pregnancy morbidity. The manifestations are caused by antibodies targeting cell membrane phospholipids and/or associated proteins. The triggers leading to these antibodies' production are unknown but recent work suggests cross-reactivity between the autoantigens and peptides produced by the intestinal microbiome. Work on how the autoantibodies could cause clinical manifestations implicates different mechanisms. Binding to surface proteins of different cell types can induce intracellular signaling leading to cell activation and tissue factor expression. Complement activation and neutrophil extracellular-traps are also involved, and recent evidence implicates endothelial protein C receptor-lysobisphosphatidic acid complex. Pregnancy is a high-risk situation for antiphospholipid syndrome patients due to the increased risk of thrombosis and obstetric complications. Epidemiological and clinical research on APS is hampered by heterogeneity in populations, testing and treatment strategies. About one in 10 to one in fifty APS pregnancies is complicated by thrombosis, despite treatment. Pregnant patients with prior thrombosis are prescribed therapeutic dose heparins and low dose aspirin. Without prior thrombosis a prophylactic dose is used. The most frequent obstetrical manifestation is recurrent early pregnancy loss. The association of APS antibodies with late pregnancy loss is stronger, however. Prevention of recurrence is achieved with aspirin and prophylactic dose heparin, although the evidence is of low certainty. The third obstetrical classifying manifestation comprises preterm delivery due to placenta-mediated complications and is treated in subsequent pregnancies with aspirin with or without prophylactic dose heparin, again based on low quality evidence. New therapies are under investigation.
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Affiliation(s)
- Martin Killian
- CIRI - Centre International de Recherche en Infectiologie, Team GIMAP, Université de Lyon, Université Jean Monnet, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR530, Saint-Étienne, France.,Internal Medicine Department, Saint-Etienne University Hospital, Saint-Étienne, France
| | - Thijs E van Mens
- Amsterdam UMC, Department of Vascular Medicine, Amsterdam Cardiovascular Sciences, Amsterdam Reproduction and Development, University of Amsterdam, Amsterdam, Netherlands
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18
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Knight JS, Kanthi Y. Mechanisms of immunothrombosis and vasculopathy in antiphospholipid syndrome. Semin Immunopathol 2022; 44:347-362. [PMID: 35122116 PMCID: PMC8816310 DOI: 10.1007/s00281-022-00916-w] [Citation(s) in RCA: 53] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 01/19/2022] [Indexed: 12/14/2022]
Abstract
Antiphospholipid syndrome (APS) is an autoimmune thrombophilia propelled by circulating antiphospholipid antibodies that herald vascular thrombosis and obstetrical complications. Antiphospholipid antibodies recognize phospholipids and phospholipid-binding proteins and are not only markers of disease but also key drivers of APS pathophysiology. Thrombotic events in APS can be attributed to various conspirators including activated endothelial cells, platelets, and myeloid-lineage cells, as well as derangements in coagulation and fibrinolytic systems. Furthermore, recent work has especially highlighted the role of neutrophil extracellular traps (NETs) and the complement system in APS thrombosis. Beyond acute thrombosis, patients with APS can also develop an occlusive vasculopathy, a long-term consequence of APS characterized by cell proliferation and infiltration that progressively expands the intima and leads to organ damage. This review will highlight known pathogenic factors in APS and will also briefly discuss similarities between APS and the thrombophilic coagulopathy of COVID-19.
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Affiliation(s)
- Jason S Knight
- Division of Rheumatology, University of Michigan, 1150 West Medical Center Drive, Ann Arbor, MI, 48109, USA.
| | - Yogendra Kanthi
- Division of Intramural Research National Heart, Lung, and Blood Institute, Bethesda, MD, USA
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19
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Alijotas-Reig J, Esteve-Valverde E, Anunciación-Llunell A, Marques-Soares J, Pardos-Gea J, Miró-Mur F. Pathogenesis, Diagnosis and Management of Obstetric Antiphospholipid Syndrome: A Comprehensive Review. J Clin Med 2022; 11:jcm11030675. [PMID: 35160128 PMCID: PMC8836886 DOI: 10.3390/jcm11030675] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/18/2022] [Accepted: 01/25/2022] [Indexed: 02/04/2023] Open
Abstract
Antiphospholipid syndrome is an autoimmune disorder characterized by vascular thrombosis and/or pregnancy morbidity associated with persistent antiphospholipid antibody positivity. Cases fulfilling the Sydney criteria for obstetric morbidity with no previous thrombosis are known as obstetric antiphospholipid syndrome (OAPS). OAPS is the most identified cause of recurrent pregnancy loss and late-pregnancy morbidity related to placental injury. Cases with incomplete clinical or laboratory data are classified as obstetric morbidity APS (OMAPS) and non-criteria OAPS (NC-OAPS), respectively. Inflammatory and thrombotic mechanisms are involved in the pathophysiology of OAPS. Trophoblasts, endothelium, platelets and innate immune cells are key cellular players. Complement activation plays a crucial pathogenic role. Secondary placental thrombosis appears by clot formation in response to tissue factor activation. New risk assessment tools could improve the prediction of obstetric complication recurrences or thromboses. The standard-of-care treatment consists of low-dose aspirin and prophylactic low molecular weight heparin. In refractory cases, the addition of hydroxychloroquine, low-dose prednisone or IVIG improve pregnancy outcomes. Statins and eculizumab are currently being tested for treating selected OAPS women. Finally, we revisited recent insights and concerns about the pathophysiology, diagnosis and management of OAPS.
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Affiliation(s)
- Jaume Alijotas-Reig
- Systemic Autoimmune Diseases Research Unit, Vall d’Hebron Hospital Campus, Vall d’Hebron Institut de Recerca (VHIR), Passeig Vall d’Hebron 119-129, 08035 Barcelona, Spain; (A.A.-L.); (J.M.-S.); (J.P.-G.)
- Systemic Autoimmune Diseases Unit, Department of Internal Medicine, Vall d’Hebron Hospital Campus, Hospital Universitari Vall d’Hebron (HUVH), Passeig Vall d’Hebron 119-129, 08035 Barcelona, Spain
- Department of Medicine, Faculty of Medicine, Universitat Autònoma de Barcelona (UAB), 08193 Barcelona, Spain
- Correspondence: (J.A.-R.); (F.M.-M.); Tel.: +34-93-489-4194 (J.A.-R.); +34-93-489-4047 (F.M.-M.); Fax: +34-93-489-4047 (J.A.-R.)
| | - Enrique Esteve-Valverde
- Department of Internal Medicine, Althaia Xarxa Assistencial, Carrer Dr Joan Soler 1-3, 08243 Manresa, Spain;
| | - Ariadna Anunciación-Llunell
- Systemic Autoimmune Diseases Research Unit, Vall d’Hebron Hospital Campus, Vall d’Hebron Institut de Recerca (VHIR), Passeig Vall d’Hebron 119-129, 08035 Barcelona, Spain; (A.A.-L.); (J.M.-S.); (J.P.-G.)
| | - Joana Marques-Soares
- Systemic Autoimmune Diseases Research Unit, Vall d’Hebron Hospital Campus, Vall d’Hebron Institut de Recerca (VHIR), Passeig Vall d’Hebron 119-129, 08035 Barcelona, Spain; (A.A.-L.); (J.M.-S.); (J.P.-G.)
- Systemic Autoimmune Diseases Unit, Department of Internal Medicine, Vall d’Hebron Hospital Campus, Hospital Universitari Vall d’Hebron (HUVH), Passeig Vall d’Hebron 119-129, 08035 Barcelona, Spain
| | - Josep Pardos-Gea
- Systemic Autoimmune Diseases Research Unit, Vall d’Hebron Hospital Campus, Vall d’Hebron Institut de Recerca (VHIR), Passeig Vall d’Hebron 119-129, 08035 Barcelona, Spain; (A.A.-L.); (J.M.-S.); (J.P.-G.)
- Systemic Autoimmune Diseases Unit, Department of Internal Medicine, Vall d’Hebron Hospital Campus, Hospital Universitari Vall d’Hebron (HUVH), Passeig Vall d’Hebron 119-129, 08035 Barcelona, Spain
| | - Francesc Miró-Mur
- Systemic Autoimmune Diseases Research Unit, Vall d’Hebron Hospital Campus, Vall d’Hebron Institut de Recerca (VHIR), Passeig Vall d’Hebron 119-129, 08035 Barcelona, Spain; (A.A.-L.); (J.M.-S.); (J.P.-G.)
- Correspondence: (J.A.-R.); (F.M.-M.); Tel.: +34-93-489-4194 (J.A.-R.); +34-93-489-4047 (F.M.-M.); Fax: +34-93-489-4047 (J.A.-R.)
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20
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Neuropsychiatric Manifestations of Antiphospholipid Syndrome—A Narrative Review. Brain Sci 2022; 12:brainsci12010091. [PMID: 35053834 PMCID: PMC8773877 DOI: 10.3390/brainsci12010091] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 01/05/2022] [Accepted: 01/07/2022] [Indexed: 12/24/2022] Open
Abstract
Antiphospholipid syndrome (APS) is a common autoimmune pro-thrombotic condition characterised by thrombosis and pregnancy morbidity. There are a broad range of neuropsychiatric manifestations associated with APS, from focal symptoms to more global dysfunction. Patients commonly present with transient ischaemic attacks and ischaemic strokes, with identifiable lesions on brain imaging. However, the underlying pathogenesis remains uncertain in other manifestations, such as cognitive dysfunction, seizures, headache and chorea. The aim is to provide a comprehensive review of the various neuropsychiatric manifestations associated with APS. A detailed literature search was applied to PubMed, including citations from 1983 to December 2021.
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21
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DeSpenza RA, Jones DM, Chamley LW, Abrahams VM. Antiphospholipid antibody-induced trophoblast responses are differentially modulated by viral dsRNA and viral ssRNA. Am J Reprod Immunol 2021; 87:e13516. [PMID: 34904767 DOI: 10.1111/aji.13516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 12/08/2021] [Indexed: 11/28/2022] Open
Abstract
PROBLEM Women with antiphospholipid antibodies (aPL) are at increased risk for pregnancy loss and preeclampsia. aPL target the trophoblast and induce a pro-inflammatory, anti-angiogenic and anti-migratory profile. Since infection during pregnancy can increase the risk for preeclampsia, a viral infection could further increase this in women with aPL. The goal of this study was to characterize the effect of viral components on trophoblast responses to aPL. METHOD OF STUDY A human first trimester trophoblast cell line was treated with or without aPL or control IgG in the presence of media, viral dsRNA or viral ssRNA. Supernatants were measured for inflammatory IL-1β and IL-8; inflammasome-associated uric acid and caspase-1 activity; and anti-angiogenic sFlt-1. Trophoblast migration was measured using a two-chamber assay. RESULTS Viral dsRNA augmented aPL-induced trophoblast caspase-1 activity, and IL-1β and IL-8 secretion in an additive manner. Viral ssRNA inhibited aPL-induced uric acid, IL-1β and sFlt-1 secretion, and further exacerbated aPL-inhibition of trophoblast migration. CONCLUSION While viral ssRNA may have some protective effects on aPL-induced inflammation and anti-angiogenic responses, viral dsRNA exacerbated aPL-mediated inflammation and viral ssRNA further limited cell migration, which could prove detrimental to placentation. Thus, viral infections may contribute to adverse pregnancy outcomes in women with aPL.
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Affiliation(s)
- Rachel A DeSpenza
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale University, New Haven, Connecticut, USA
| | - Deidre M Jones
- Department of Obstetrics & Gynecology, University of Auckland, Auckland, New Zealand
| | - Lawrence W Chamley
- Department of Obstetrics & Gynecology, University of Auckland, Auckland, New Zealand
| | - Vikki M Abrahams
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale University, New Haven, Connecticut, USA
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22
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Capozzi A, Riitano G, Recalchi S, Manganelli V, Costi R, Saccoliti F, Pulcinelli F, Garofalo T, Misasi R, Longo A, Di Santo R, Sorice M. Effect of heparanase inhibitor on tissue factor overexpression in platelets and endothelial cells induced by anti-β2-GPI antibodies. J Thromb Haemost 2021; 19:2302-2313. [PMID: 34107171 PMCID: PMC8456873 DOI: 10.1111/jth.15417] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 04/23/2021] [Accepted: 05/28/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Anti-phospholipid syndrome (APS) is characterized by arterial and/or venous thrombosis and pregnancy morbidity associated with the presence of "anti-phospholipid antibodies." Thrombosis may be the result of a hypercoagulable state related to activation of endothelial cells and platelets by anti-β2-glycoprotein I (β2-GPI) antibodies. Anti-β2-GPI antibodies induce a proinflammatory and procoagulant phenotype in these cells that, after activation, express tissue factor (TF), the major initiator of the clotting cascade, playing a role in thrombotic manifestations. Moreover, TF expression may also be induced by heparanase, an endo-β-D-glucuronidase, that generates heparan sulfate fragments, regulating inflammatory responses. OBJECTIVES In this study we analyzed, in human platelets and endothelial cells, the effect of a new symmetrical 2-aminophenyl-benzazolyl-5-acetate derivative (RDS3337), able to inhibit heparanase activity, on signal transduction pathways leading to TF expression triggered by anti-β2-GPI. METHODS Platelets and endothelial cells were incubated with affinity purified anti-β2-GPI after pretreatment with RDS3337. Cell lysates were analyzed for phospho-interleukin-1 receptor-associated kinase 1 (IRAK1), phospho-p65 nuclear factor kappa B (NF-κB) and TF by western blot. In addition, platelet activation and secretion by ATP release dosage were evaluated. RESULTS IRAK phosphorylation and consequent NF-κB activation, as well as TF expression triggered by anti-β2-GPI treatment were significantly prevented by previous pretreatment with RDS3337. In the same vein, pretreatment with RDS3337 prevented platelet aggregation and ATP release triggered by anti-β2-GPI antibodies. CONCLUSION These findings support the view of heparanase involvement in a prothrombotic state related to APS syndrome, suggesting a novel target to regulate overexpression of procoagulant protein(s).
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Affiliation(s)
- Antonella Capozzi
- Department of Experimental Medicine“Sapienza” University of RomeRomeItaly
| | - Gloria Riitano
- Department of Experimental Medicine“Sapienza” University of RomeRomeItaly
| | - Serena Recalchi
- Department of Experimental Medicine“Sapienza” University of RomeRomeItaly
| | - Valeria Manganelli
- Department of Experimental Medicine“Sapienza” University of RomeRomeItaly
| | - Roberta Costi
- Dipartimento di Chimica e Tecnologie del FarmacoIstituto Pasteur‐Fondazione Cenci Bolognetti“Sapienza” University of RomeRomeItaly
| | - Francesco Saccoliti
- Dipartimento di Chimica e Tecnologie del FarmacoIstituto Pasteur‐Fondazione Cenci Bolognetti“Sapienza” University of RomeRomeItaly
| | - Fabio Pulcinelli
- Department of Experimental Medicine“Sapienza” University of RomeRomeItaly
| | - Tina Garofalo
- Department of Experimental Medicine“Sapienza” University of RomeRomeItaly
| | - Roberta Misasi
- Department of Experimental Medicine“Sapienza” University of RomeRomeItaly
| | - Agostina Longo
- Department of Experimental Medicine“Sapienza” University of RomeRomeItaly
| | - Roberto Di Santo
- Dipartimento di Chimica e Tecnologie del FarmacoIstituto Pasteur‐Fondazione Cenci Bolognetti“Sapienza” University of RomeRomeItaly
| | - Maurizio Sorice
- Department of Experimental Medicine“Sapienza” University of RomeRomeItaly
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23
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Arantes FT, Mazetto BM, Saraiva SS, Tobaldini LQ, Dos Santos APR, Annichino-Bizzacchi J, Orsi FA. Inflammatory markers in thrombosis associated with primary antiphospholipid syndrome. J Thromb Thrombolysis 2021; 50:772-781. [PMID: 32462539 DOI: 10.1007/s11239-020-02155-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The role of inflammation in thrombotic complications of primary antiphospholipid syndrome (PAPS) is controversial. The aim of this study was to evaluate levels of inflammation and coagulation markers in patients with thrombotic PAPS (t-PAPS). Patients with t-PAPS and individuals with no history of thrombosis were enrolled. The association of t-PAPS with levels of tumor necrosis factor (TNF)-α, C-reactive protein (hs-CRP), interferon (IFN)-α, interleukins (IL)-6, -8, factor VIII (FVIII), von Willebrand factor (VWF) and tissue factor (TF) was evaluated by regression models. The levels of these markers were also compared between controls and subgroups of t-PAPS patients with triple positivity, recently diagnosed thrombosis, recurrent thrombosis and venous thrombosis. Patients with t-PAPS (n = 101) had a 8.6-fold increased levels of TNF-α, 90% increased levels of hs-CRP, 80% increased levels of IL-6, 30% increased levels of FVIIIAg, 50% increased levels of VWF and 66% increased levels of TF as compared to controls (n = 131), and the differences did not change after adjustments for sex, age and cardiovascular risk factors. Inflammatory markers were elevated in t-PAPS regardless of the aPL profile, number of previous thrombosis or time elapsed since diagnosis. TNF-α and IL-8 levels were higher in t-PAPS patients with venous thrombosis, in comparison with those with arterial thrombosis and controls. Patients with t-PAPS presented with increased levels of inflammatory and coagulation markers, which suggests that t-PAPS is associated not only with hypercoagulability but also with a persistent inflammatory state.
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Affiliation(s)
| | - Bruna M Mazetto
- School of Medical Sciences, University of Campinas, Campinas, Brazil
| | - Sabrina S Saraiva
- School of Medical Sciences, University of Campinas, Campinas, Brazil
| | - Laís Q Tobaldini
- School of Medical Sciences, University of Campinas, Campinas, Brazil
| | | | - Joyce Annichino-Bizzacchi
- Department of Clinical Medicine, School of Medical Sciences, University of Campinas, Campinas, Brazil
| | - Fernanda A Orsi
- School of Medical Sciences, University of Campinas, Campinas, Brazil. .,Department of Clinical Pathology, School of Medical Sciences, School of Medical Sciences, University of Campinas, Campinas R. Tessália Vieira de Camargo, 126. Cidade Universitária, Campinas, 13083-887, Brazil.
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Cao W, Zhang C, Wang H, Wu Q, Yuan Y, Chen J, Geng S, Zhang X. Ischemic Stroke: An Underestimated Complication of COVID-19. Aging Dis 2021; 12:691-704. [PMID: 34094634 PMCID: PMC8139195 DOI: 10.14336/ad.2021.0209] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 02/09/2021] [Indexed: 12/20/2022] Open
Abstract
The coronavirus disease 2019 (COVID-19) has spread rapidly as a pandemic around the world. In addition to severe acute respiratory syndrome, more and more studies have focused on the complication of COVID-19, especially ischemic stroke. Here, we propose several pathophysiological processes and possible mechanisms underlying ischemic stroke after COVID-19 for early prevention and better treatment of COVID-19-related stroke.
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Affiliation(s)
- Wen Cao
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
- Hebei Key Laboratory of Vascular Homeostasis and Hebei Collaborative Innovation Center for Cardio-cerebrovascular Disease, Shijiazhuang, Hebei, China
| | - Cong Zhang
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
- Hebei Key Laboratory of Vascular Homeostasis and Hebei Collaborative Innovation Center for Cardio-cerebrovascular Disease, Shijiazhuang, Hebei, China
| | - Huan Wang
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
- Hebei Key Laboratory of Vascular Homeostasis and Hebei Collaborative Innovation Center for Cardio-cerebrovascular Disease, Shijiazhuang, Hebei, China
| | - Qianqian Wu
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
- Hebei Key Laboratory of Vascular Homeostasis and Hebei Collaborative Innovation Center for Cardio-cerebrovascular Disease, Shijiazhuang, Hebei, China
| | - Yujia Yuan
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
- Hebei Key Laboratory of Vascular Homeostasis and Hebei Collaborative Innovation Center for Cardio-cerebrovascular Disease, Shijiazhuang, Hebei, China
| | - Junmin Chen
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
- Hebei Key Laboratory of Vascular Homeostasis and Hebei Collaborative Innovation Center for Cardio-cerebrovascular Disease, Shijiazhuang, Hebei, China
| | - Shuo Geng
- Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia 24061, USA
| | - Xiangjian Zhang
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
- Hebei Key Laboratory of Vascular Homeostasis and Hebei Collaborative Innovation Center for Cardio-cerebrovascular Disease, Shijiazhuang, Hebei, China
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25
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Truglia S, Mancuso S, Capozzi A, Recalchi S, Riitano G, Longo A, De Carolis S, Spinelli FR, Alessandri C, Ceccarelli F, De Carolis C, Misasi R, Sorice M, Conti F. "Non-criteria antiphospholipid antibodies": bridging the gap between seropositive and seronegative Antiphospholipid Syndrome. Rheumatology (Oxford) 2021; 61:826-833. [PMID: 33970223 DOI: 10.1093/rheumatology/keab414] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 05/03/2021] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE We aimed to analyze the prevalence of non-criteria anti-phospholipid (aPL) antibodies and their role in the diagnosis, treatment and prognosis in a cohort of patients with clinical features consistent with a diagnosis of antiphospholipid syndrome (APS), but persistently negative for criteria aPL-anti-cardiolipin antibodies (aCL), anti-β2-glycoprotein I antibodies (aβ2-GPI), and lupus anticoagulant (LA) - named seronegative APS (SN-APS). METHODS Sera from SN-APS patients were tested for aCL by TLC-immunostaining, anti-vimentin/cardiolipin (aVim/CL) and anti-phosphatidylserine/prothrombin (anti-PS/PT) by ELISA. Control groups of our study were APS patients and healthy controls. RESULTS We enrolled 114 consecutive SN-APS patients, 69 (60.5%) resulted positive for at least one non-criteria test in two occasions 12 weeks apart. Among the persistently positive patients to these tests, 97% resulted positive for aCL by TLC-immunostaining, 52.3% for aVim/CL and 17.4% for aPS/PT. SN-APS patients with double positivity (aCL by TLC-immunostaining and aVim/CL) showed a likelihood positive ratio of 8 to present mixed thrombotic and obstetrical features. Among SN-APS patients tested positive, after the therapeutic changes, 3 cases of recurrent thrombosis were observed [median follow-up 41 months (IQR 39.5)]. Twenty pregnancies were recorded in 17 SN-APS patients after the detection of unconventional aPL and 12 of them (60%) experienced a good outcome under conventional treatment for APS. CONCLUSIONS This is the largest monocentric study demonstrating that aCL tested by TLC-immunostaining and aVim/CL can detect aPL positivity in SN-APS. It may encourage clinicians to monitoring and providing adequate targeted therapy, which improve SN-APS prognosis.
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Affiliation(s)
- Simona Truglia
- Reumatologia, Dipartimento di Scienze Cliniche Internistiche, Anestesiologiche e Cardiovascolari, Sapienza Università Roma, Rome, Italy
| | - Silvia Mancuso
- Reumatologia, Dipartimento di Scienze Cliniche Internistiche, Anestesiologiche e Cardiovascolari, Sapienza Università Roma, Rome, Italy
| | - Antonella Capozzi
- Dipartimento di Medicina Sperimentale, Sapienza Università di Roma, Rome, Italy
| | - Serena Recalchi
- Dipartimento di Medicina Sperimentale, Sapienza Università di Roma, Rome, Italy
| | - Gloria Riitano
- Dipartimento di Medicina Sperimentale, Sapienza Università di Roma, Rome, Italy
| | - Agostina Longo
- Dipartimento di Medicina Sperimentale, Sapienza Università di Roma, Rome, Italy
| | - Sara De Carolis
- Department of Obstetrics, Gynaecology and Pediatrics, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
| | - Francesca Romana Spinelli
- Reumatologia, Dipartimento di Scienze Cliniche Internistiche, Anestesiologiche e Cardiovascolari, Sapienza Università Roma, Rome, Italy
| | - Cristiano Alessandri
- Reumatologia, Dipartimento di Scienze Cliniche Internistiche, Anestesiologiche e Cardiovascolari, Sapienza Università Roma, Rome, Italy
| | - Fulvia Ceccarelli
- Reumatologia, Dipartimento di Scienze Cliniche Internistiche, Anestesiologiche e Cardiovascolari, Sapienza Università Roma, Rome, Italy
| | - Caterina De Carolis
- UniCamillus-Saint Camillus International University of Health Sciences, Rome, Italy
| | - Roberta Misasi
- Dipartimento di Medicina Sperimentale, Sapienza Università di Roma, Rome, Italy
| | - Maurizio Sorice
- Dipartimento di Medicina Sperimentale, Sapienza Università di Roma, Rome, Italy
| | - Fabrizio Conti
- Reumatologia, Dipartimento di Scienze Cliniche Internistiche, Anestesiologiche e Cardiovascolari, Sapienza Università Roma, Rome, Italy
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26
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Álvarez D, Rúa C, Cadavid J ÁP. Microparticles: An Alternative Explanation to the Behavior of Vascular Antiphospholipid Syndrome. Semin Thromb Hemost 2021; 47:787-799. [PMID: 33930895 DOI: 10.1055/s-0041-1727111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Antiphospholipid syndrome is an autoimmune disease characterized by the persistent presence of antiphospholipid antibodies, along with occurrence of vascular thrombosis and pregnancy morbidity. The variety of antiphospholipid antibodies and their related mechanisms, as well as the behavior of disease in wide groups of patients, have led some authors to propose a differentiation of this syndrome into two independent entities: vascular and obstetric antiphospholipid syndrome. Thus, previous studies have discussed whether specific autoantibodies may be responsible for this differentiation or, in contrast, how the same antibodies are able to generate two different clinical presentations. This discussion is yet to be settled. The capability of serum IgG from patients with vascular thrombosis to trigger the biogenesis of endothelial cell-derived microparticles in vitro is one of the previously discussed differences between the clinical entities of antiphospholipid syndrome. These vesicles constitute a prothrombotic mechanism as they can directly lead to clot activation in murine models and recalcified human plasma. Nevertheless, other indirect mechanisms by which microparticles can spread a procoagulant phenotype could be critical to understanding their role in antiphospholipid syndrome. For this reason, questions regarding the cargo of microparticles, and the signaling pathways involved in their biogenesis, are of interest in attempting to explain the behavior of this autoimmune disease.
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Affiliation(s)
- Daniel Álvarez
- Grupo Reproducción, Departamento Microbiología y Parasitología, Facultad de Medicina, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia
| | - Carolina Rúa
- Grupo de Investigación en Trombosis, Departamento Medicina Interna, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Ángela P Cadavid J
- Grupo Reproducción, Departamento Microbiología y Parasitología, Facultad de Medicina, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia.,Grupo de Investigación en Trombosis, Departamento Medicina Interna, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
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27
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Mauracher LM, Krall M, Roiß J, Hell L, Koder S, Hofbauer TM, Gebhart J, Hayden H, Brostjan C, Ay C, Pabinger I. Neutrophil subpopulations and their activation potential in patients with antiphospholipid syndrome and healthy individuals. Rheumatology (Oxford) 2021; 60:1687-1699. [PMID: 33026085 PMCID: PMC8024003 DOI: 10.1093/rheumatology/keaa532] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 07/27/2020] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVES Patients with APS are at increased risk of thromboembolism. Neutrophils have been shown to play a role in inducing thrombosis. We aimed to investigate differences in neutrophil subpopulations, their potential of activation and neutrophil extracellular trap (NET) formation comparing high and low-density neutrophils (HDNs/LDNs) as well as subpopulations in patients with APS and controls to gain deeper insight into their potential role in thrombotic manifestations in patients with APS. METHODS HDNs and LDNs of 20 patients with APS and 20 healthy donors were isolated by density gradient centrifugation and stimulated. Neutrophil subpopulations, their activation and NET release were assessed by flow cytometry. RESULTS LDNs of both groups showed higher baseline activation, lower response to stimulation (regulation of activation markers CD11b/CD66b), but higher NET formation compared with HDNs. In patients with APS, the absolute number of LDNs was higher compared with controls. HDNs of APS patients showed higher spontaneous activation [%CD11b high: median (interquartile range): 2.78% (0.58-10.24) vs 0.56% (0.19-1.37)] and response to stimulation with ionomycin compared with HDNs of healthy donors [%CD11b high: 98.20 (61.08-99.13) vs 35.50% (13.50-93.85)], whereas no difference was found in LDNs. NET formation was increased in patients' HDNs upon stimulation. CONCLUSION HDNs and LDNs act differently, unstimulated and upon various stimulations in both healthy controls and APS patients. Differences in HDNs and LDNs between patients with APS and healthy controls indicate that neutrophils may enhance the risk of thrombosis in these patients and could thus be a target for prevention of thrombosis in APS.
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Affiliation(s)
- Lisa-Marie Mauracher
- Clinical Division of Haematology and Haemostaseology, Department of Medicine I, Vienna, Austria
| | - Moritz Krall
- Clinical Division of Haematology and Haemostaseology, Department of Medicine I, Vienna, Austria
| | - Johanna Roiß
- Clinical Division of Haematology and Haemostaseology, Department of Medicine I, Vienna, Austria
| | - Lena Hell
- Clinical Division of Haematology and Haemostaseology, Department of Medicine I, Vienna, Austria
| | - Silvia Koder
- Clinical Division of Haematology and Haemostaseology, Department of Medicine I, Vienna, Austria
| | - Thomas M Hofbauer
- Division of Cardiology, Department of Internal Medicine II, Vienna, Austria
| | - Johanna Gebhart
- Clinical Division of Haematology and Haemostaseology, Department of Medicine I, Vienna, Austria
| | - Hubert Hayden
- Department of Surgery, Surgical Research Laboratories, Medical University of Vienna, Vienna, Austria
| | - Christine Brostjan
- Department of Surgery, Surgical Research Laboratories, Medical University of Vienna, Vienna, Austria
| | - Cihan Ay
- Clinical Division of Haematology and Haemostaseology, Department of Medicine I, Vienna, Austria
| | - Ingrid Pabinger
- Clinical Division of Haematology and Haemostaseology, Department of Medicine I, Vienna, Austria
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28
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Understanding the Pathophysiology of Thrombotic APS through Animal Models. Int J Mol Sci 2021; 22:ijms22052588. [PMID: 33806694 PMCID: PMC7961365 DOI: 10.3390/ijms22052588] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 03/01/2021] [Accepted: 03/01/2021] [Indexed: 12/12/2022] Open
Abstract
Antiphospholipid syndrome (APS) is a leading acquired cause of thrombotic events, with a notable tendency to promote thrombosis in vascular beds of all sizes, including both arterial and venous circuits. While pathogenic antiphospholipid antibodies circulate at relatively stable levels in blood, thrombosis tends to manifest as discrete and acute events, suggesting the requirement for a “second hit.” While this two-hit model is generally accepted, much remains to be learned about exactly how antiphospholipid antibodies predispose to thrombosis in vivo and exactly how this predisposition interacts with the second hit. To this end, investigators have turned to animal models. Numerous approaches for modeling APS in animals have been described to date, each with potential advantages and disadvantages. This review will attempt to describe the most common APS models employed so far while discussing some pros and cons of each. Mechanisms of thrombotic APS that have thus far been explored in animal models will also be briefly addressed.
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29
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Chaturvedi S, Braunstein EM, Brodsky RA. Antiphospholipid syndrome: Complement activation, complement gene mutations, and therapeutic implications. J Thromb Haemost 2021; 19:607-616. [PMID: 32881236 PMCID: PMC8080439 DOI: 10.1111/jth.15082] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 08/21/2020] [Accepted: 08/24/2020] [Indexed: 12/13/2022]
Abstract
Antiphospholipid syndrome (APS) is an acquired thromboinflammatory disorder characterized by the presence of antiphospholipid antibodies as well as an increased frequency of venous or arterial thrombosis and/or obstetrical morbidity. The spectrum of disease varies from asymptomatic to a severe form characterized by widespread thrombosis and multiorgan failure, termed catastrophic APS (CAPS). CAPS affects only about ∼1% of APS patients, often presents as a thrombotic microangiopathy and has a fulminant course with >40% mortality, despite the best available therapy. Animal models have implicated complement in the pathophysiology of thrombosis in APS, with more recent data from human studies confirming the interaction between the coagulation and complement pathways. Activation of the complement cascade via antiphospholipid antibodies can cause cellular injury and promote coagulation via multiple mechanisms. Finally, analogous to classic complement-mediated diseases such as atypical hemolytic uremic syndrome, a subset of patients with APS may be at increased risk for development of CAPS because of the presence of germline variants in genes crucial for complement regulation. Together, these data make complement inhibition an attractive and potentially lifesaving therapy to mitigate morbidity and mortality in severe thrombotic APS and CAPS.
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Affiliation(s)
- Shruti Chaturvedi
- Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Evan M Braunstein
- Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Robert A Brodsky
- Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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30
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Abstract
Antiphospholipid syndrome (APS) is a thromboinflammatory disease with a variety of clinical phenotypes. Primary thrombosis prophylaxis should take an individualized risk stratification approach. Moderate-intensity vitamin K antagonist such as warfarin remains the primary strategy for secondary thrombosis prophylaxis among APS patients, especially for patients with predominantly venous disease. For now, direct oral anti-coagulants should be avoided in most APS patients, especially those with history of arterial manifestations. Obstetric APS management should be tailored based on an individual patient's antiphospholipid antibody profile, and obstetric and thrombotic history. Pharmacological agents beyond anticoagulants may be considered for the management of microthrombotic and nonthrombotic manifestations of APS, although more data are needed. A relatively recent discovery in the area of APS pathogenesis is the implication of neutrophil extracellular traps in thrombin generation and initiation of inflammatory cascades. APS is a complex thromboinflammatory disease with a broad clinical spectrum. Personalized therapy according to an individual's unique thrombosis and obstetric risk should be advocated.
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31
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Mormile I, Granata F, Punziano A, de Paulis A, Rossi FW. Immunosuppressive Treatment in Antiphospholipid Syndrome: Is It Worth It? Biomedicines 2021; 9:biomedicines9020132. [PMID: 33535377 PMCID: PMC7911562 DOI: 10.3390/biomedicines9020132] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 01/18/2021] [Accepted: 01/26/2021] [Indexed: 11/16/2022] Open
Abstract
The antiphospholipid syndrome (APS) is characterized by the development of venous and/or arterial thrombosis and pregnancy morbidity in patients with persistent antiphospholipid antibodies (aPL). Catastrophic antiphospholipid syndrome (CAPS) is a life-threatening form of APS occurring in about 1% of cases. Lifelong anticoagulation with vitamin K antagonists remains the cornerstone of the therapy for thrombotic APS, but frequently the use of anticoagulation may be problematic due to the increased risk of bleeding, drug interactions, or comorbidities. Immunosuppressant drugs are widely used to treat several autoimmune conditions, in which their safety and effectiveness have been largely demonstrated. Similar evidence in the treatment of primary APS is limited to case reports or case series, and studies on a large scale lack. Immunomodulatory drugs may be an emerging tool in managing such particular situations, like refractory obstetrical complications, CAPS, or so-called APS non-criteria manifestations. In addition, immunomodulatory drugs may be useful in patients experiencing recurrent thromboembolic events despite optimized anticoagulant therapy. We did a comprehensive review of literature analyzing the possible role of immunomodulation in primary APS to provide a broad overview of potentially safe and effective target treatments for managing this devastating disease.
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Affiliation(s)
- Ilaria Mormile
- Department of Translational Medical Sciences, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy; (I.M.); (F.G.); (A.P.); (A.d.P.)
| | - Francescopaolo Granata
- Department of Translational Medical Sciences, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy; (I.M.); (F.G.); (A.P.); (A.d.P.)
| | - Alessandra Punziano
- Department of Translational Medical Sciences, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy; (I.M.); (F.G.); (A.P.); (A.d.P.)
| | - Amato de Paulis
- Department of Translational Medical Sciences, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy; (I.M.); (F.G.); (A.P.); (A.d.P.)
- Center for Basic and Clinical Immunology Research (CISI), WAO Center of Excellence, University of Naples Federico II, 80131 Naples, Italy
| | - Francesca Wanda Rossi
- Department of Translational Medical Sciences, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy; (I.M.); (F.G.); (A.P.); (A.d.P.)
- Center for Basic and Clinical Immunology Research (CISI), WAO Center of Excellence, University of Naples Federico II, 80131 Naples, Italy
- Correspondence: ; Tel.: +39-81-7464513
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32
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Misasi R, Longo A, Recalchi S, Caissutti D, Riitano G, Manganelli V, Garofalo T, Sorice M, Capozzi A. Molecular Mechanisms of "Antiphospholipid Antibodies" and Their Paradoxical Role in the Pathogenesis of "Seronegative APS". Int J Mol Sci 2020; 21:ijms21218411. [PMID: 33182499 PMCID: PMC7665122 DOI: 10.3390/ijms21218411] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/30/2020] [Accepted: 11/06/2020] [Indexed: 02/06/2023] Open
Abstract
Antiphospholipid Syndrome (APS) is an autoimmune disease characterized by arterial and/or venous thrombosis and/or pregnancy morbidity, associated with circulating antiphospholipid antibodies (aPL). In some cases, patients with a clinical profile indicative of APS (thrombosis, recurrent miscarriages or fetal loss), who are persistently negative for conventional laboratory diagnostic criteria, are classified as "seronegative" APS patients (SN-APS). Several findings suggest that aPL, which target phospholipids and/or phospholipid binding proteins, mainly β-glycoprotein I (β-GPI), may contribute to thrombotic diathesis by interfering with hemostasis. Despite the strong association between aPL and thrombosis, the exact pathogenic mechanisms underlying thrombotic events and pregnancy morbidity in APS have not yet been fully elucidated and multiple mechanisms may be involved. Furthermore, in many SN-APS patients, it is possible to demonstrate the presence of unconventional aPL ("non-criteria" aPL) or to detect aPL with alternative laboratory methods. These findings allowed the scientists to study the pathogenic mechanism of SN-APS. This review is focused on the evidence showing that these antibodies may play a functional role in the signal transduction pathway(s) leading to thrombosis and pregnancy morbidity in SN-APS. A better comprehension of the molecular mechanisms triggered by aPL may drive development of potential therapeutic strategies in APS patients.
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33
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Hollerbach A, Müller-Calleja N, Canisius A, Orning C, Lackner KJ. Induction of tissue factor expression by anti-β2-glycoprotein I is mediated by tumor necrosis factor α. J Thromb Thrombolysis 2020; 49:228-234. [PMID: 31612355 DOI: 10.1007/s11239-019-01970-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Antiphospholipid antibodies (aPL) are heterogeneous and there is evidence that binding specificity determines which cellular effects they can trigger. We have therefore hypothesised that the induction of tissue factor (TF) in monocytes and endothelial cells by aPL depends on their binding specificity. To further investigate this, we have analyzed the ability of three human monoclonal aPL with distinctly different binding specificities to induce transcription and cell surface expression of TF in monocytes and endothelial cells. Results with human monoclonal aPL were validated with IgG-fractions obtained from patients with APS. We confirmed previous results that a lipid reactive human monoclonal aPL rapidly induced TF transcription and cell surface expression in monocytes and endothelial cells. A monoclonal aPL reactive against β2 glycoprotein I (β2GPI) induced TF with a delayed time course. This was fully dependent on the induction of tumor necrosis factor alpha (TNFα) secretion as capture of TNFα by adalimumab prevented TF induction. This pattern was confirmed with patient IgG fractions. Both lipid reactive and anti-β2GPI induced TF transcription. Unexpectedly, this activity of anti-β2GPI was mediated fully by TNFα which was secreted in response to incubation with anti-β2GPI. The role of TNFα in mediating TF induction by anti-β2GPI may have wider implications for APS pathogenesis.
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Affiliation(s)
- Anne Hollerbach
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Mainz, Langenbeckstr. 1, 55131, Mainz, Germany.,Center for Thrombosis and Hemostasis, University Medical Center Mainz, Mainz, Germany
| | - Nadine Müller-Calleja
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Mainz, Langenbeckstr. 1, 55131, Mainz, Germany.,Center for Thrombosis and Hemostasis, University Medical Center Mainz, Mainz, Germany
| | - Antje Canisius
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Mainz, Langenbeckstr. 1, 55131, Mainz, Germany
| | - Carolin Orning
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Mainz, Langenbeckstr. 1, 55131, Mainz, Germany
| | - Karl J Lackner
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Mainz, Langenbeckstr. 1, 55131, Mainz, Germany.
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34
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Hu C, Li X, Zhao J, Wang Q, Li M, Tian X, Zeng X. Immunoglobulin A Isotype of Antiphospholipid Antibodies Does Not Provide Added Value for the Diagnosis of Antiphospholipid Syndrome in a Chinese Population. Front Immunol 2020; 11:568503. [PMID: 33123140 PMCID: PMC7573363 DOI: 10.3389/fimmu.2020.568503] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 09/14/2020] [Indexed: 12/23/2022] Open
Abstract
Objective Antiphospholipid syndrome (APS) is characterized by the presence of anti-phospholipid (aPL) antibodies. However, the relationship between the immunoglobulin (Ig) A isotype of aPL positivity and its clinical utility in APS diagnosis is controversial. Presently, we determine the clinical utility of IgA-aPL from consecutive patients in a large cohort from the Chinese population and patients with APS whose aPL profiles were obtained. Methods The detection of anticardiolipin (aCL) and anti-β2 glycoprotein-Ⅰ (aβ2GPⅠ) antibodies of the IgA/IgG/IgM isotype by paramagnetic particle chemiluminescent immunoassay was carried out in sera from 7293 subjects. 153 primary APS (PAPS) patients and 59 patients with secondary APS (SAPS) were included in this study. Results In total, 1,082 out of 7,293 (2.55%) subjects had a positive IgA-aPL test, and the prevalence of isolated IgA-aPL was 0.29% (21/7,293) in the general population. The prevalence of IgA-aPL in the PAPS patients was 12.42% (19/153); however, only one patient (0.65%) presented with isolated IgA-aPL. Fifty (25.9%) of the SAPS had IgA-aPL, none of whom lacked IgG/IgM-aPL. The combination of the IgA isotype and the IgG/IgM isotype did not increase the diagnostic performance when compared with the IgG/IgM isotype of aCL or aβ2GPⅠ, respectively. IgA-aPL was not associated with clinical manifestation in patients with APS. Conclusion Isolated IgA-aPL is rare in the general population as well as in patients with APS. Whether in the laboratory or in clinical practice, the presence of IgA-aPL does not provide added value for the diagnosis of APS in the Chinese population.
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Affiliation(s)
- Chaojun Hu
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology & Clinical Immunology, Ministry of Education, Beijing, China.,National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Beijing, China
| | - Xi Li
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology & Clinical Immunology, Ministry of Education, Beijing, China.,Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Jiuliang Zhao
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology & Clinical Immunology, Ministry of Education, Beijing, China.,National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Beijing, China
| | - Qian Wang
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology & Clinical Immunology, Ministry of Education, Beijing, China.,National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Beijing, China
| | - Mengtao Li
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology & Clinical Immunology, Ministry of Education, Beijing, China.,National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Beijing, China
| | - Xinping Tian
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology & Clinical Immunology, Ministry of Education, Beijing, China.,National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Beijing, China
| | - Xiaofeng Zeng
- Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Key Laboratory of Rheumatology & Clinical Immunology, Ministry of Education, Beijing, China.,National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Beijing, China
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Saito M, Makino Y, Inoue K, Watanabe Y, Hoshi O, Kubota T. Anti-DNA antibodies cross-reactive with β 2-glycoprotein I induce monocyte tissue factor through the TLR9 pathway. Immunol Med 2020; 44:124-135. [PMID: 32701417 DOI: 10.1080/25785826.2020.1796285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Antibodies specific for cardiolipin (CL)-β2-glycoprotein I (β2GPI) are known to induce tissue factor (TF) expression by monocytes and endothelial cells which leads to a prothrombotic state in antiphospholipid syndrome (APS), but the mechanism is not fully elucidated. Previously, we reported that the mouse monoclonal anti-CL-β2GPI antibody WB-6 cross-reacts with DNA, enters monocytes via binding to cell surface DNA, and induces TF expression. The current study aimed to identify the intracellular signaling pathways involved in this process. The binding of WB-6 to CL-β2GPI or DNA, and endocytosis was not prevented by chloroquine, but pre-treatment of the cells with chloroquine significantly suppressed TF expression. TLR9 inhibitory oligodeoxynucleotide also suppressed the WB-6-induced TF expression, suggesting a pivotal role of the TLR9 pathway in TF production. Serum antibodies obtained from a patient with APS accompanying systemic lupus erythematosus (SLE) bound to both CL-β2GPI and DNA, and induced TF in normal monocytes. This effect was suppressed by chloroquine, and abolished by removal of the DNA-binding activity. These results suggest that induction of TF expression results from TLR9 activation by DNA which was internalized together with cross-reactive antibodies produced in secondary APS accompanying SLE.
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Affiliation(s)
- Masumi Saito
- Department of Immunopathology, Tokyo Medical and Dental University (TMDU) Graduate School of Medical and Dental Sciences, Tokyo, Japan.,Laboratory for Clinical Research, Nippon Medical School, Tokyo, Japan
| | - Yumi Makino
- Department of Immunopathology, Tokyo Medical and Dental University (TMDU) Graduate School of Medical and Dental Sciences, Tokyo, Japan
| | - Kumi Inoue
- Department of Immunopathology, Tokyo Medical and Dental University (TMDU) Graduate School of Medical and Dental Sciences, Tokyo, Japan.,Department of Anatomical and Physiological Science, TMDU Graduate School of Medical and Dental Sciences, Tokyo, Japan
| | - Yoshino Watanabe
- Department of Immunopathology, Tokyo Medical and Dental University (TMDU) Graduate School of Medical and Dental Sciences, Tokyo, Japan
| | - Osamu Hoshi
- Department of Anatomical and Physiological Science, TMDU Graduate School of Medical and Dental Sciences, Tokyo, Japan
| | - Tetsuo Kubota
- Department of Immunopathology, Tokyo Medical and Dental University (TMDU) Graduate School of Medical and Dental Sciences, Tokyo, Japan.,Department of Anatomical and Physiological Science, TMDU Graduate School of Medical and Dental Sciences, Tokyo, Japan.,Department of Medical Technology, Tsukuba International University, Ibaraki, Japan
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Mazetto BDM, Lazarini M, Tobaldini LQ, Arantes FT, Dos Santos APR, Jacinto BC, Vaz CDO, Mesquita GTV, Saraiva SDS, Annichino-Bizzacchi J, Orsi FA. Expression of tissue factor mRNA in thrombosis associated with antiphospholipid syndrome. J Thromb Thrombolysis 2020; 51:370-378. [PMID: 32627125 DOI: 10.1007/s11239-020-02209-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Tissue factor (TF) is a procoagulant protein associated with increased risk of thrombotic events in antiphospholipid syndrome (t-APS). The mechanisms by which TF levels are increased in APS have not yet been established. The aim of this study was to investigate whether TF mRNA expression is associated with TF levels and thrombosis in APS. We compared levels of circulating TF and high sensitivity C-reactive protein (hs-CRP) between t-APS and controls (individuals without thrombosis). The association between TF mRNA expression, quantified by real time quantitative polymerase chain reaction, and t-APS was accessed using regression analysis. We included 41 controls and 42 t-APS patients, mean age was 41 years old (SD 14) in both groups. Hs-CRP and TF levels were higher in t-APS patients (mean hs-CRP levels 0.81 mg/dL [SD 1.88] and median TF levels 249.0 pg/mL [IQR 138.77-447.61]) as compared to controls (mean hs-CRP levels 0.24 mg/dL [SD 0.26] and median TF levels 113.0 pg/mL [IQR 81.17-161.53]; P = 0.02 and P < 0.0001, respectively). There was no correlation between TF mRNA expression and TF levels in t-APS (r - 0.209, P = 0.19). TF mRNA expression was not associated with t-APS (adjusted OR 1.16; 95%CI 0.72-1.87). Despite circulating TF levels being higher in patients with t-APS than in controls, TF mRNA expression was similar between groups. The results demonstrate that TF mRNA expression is not associated with levels of circulating TF and hypercoagulability in t-APS.
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Affiliation(s)
| | - Mariana Lazarini
- Hematology and Hemotherapy Center, University of Campinas, Campinas, Brazil
| | - Lais Quinteiro Tobaldini
- Faculty of Medical Sciences, University of Campinas, Campinas, Brazil.,Hematology and Hemotherapy Center, University of Campinas, Campinas, Brazil
| | - Fernanda Talge Arantes
- Faculty of Medical Sciences, University of Campinas, Campinas, Brazil.,Hematology and Hemotherapy Center, University of Campinas, Campinas, Brazil
| | - Ana Paula Rosa Dos Santos
- Faculty of Medical Sciences, University of Campinas, Campinas, Brazil.,Hematology and Hemotherapy Center, University of Campinas, Campinas, Brazil
| | - Bruna Cardoso Jacinto
- Faculty of Medical Sciences, University of Campinas, Campinas, Brazil.,Hematology and Hemotherapy Center, University of Campinas, Campinas, Brazil
| | - Camila de Oliveira Vaz
- Faculty of Medical Sciences, University of Campinas, Campinas, Brazil.,Hematology and Hemotherapy Center, University of Campinas, Campinas, Brazil
| | | | - Sabrina da Silva Saraiva
- Faculty of Medical Sciences, University of Campinas, Campinas, Brazil.,Hematology and Hemotherapy Center, University of Campinas, Campinas, Brazil
| | - Joyce Annichino-Bizzacchi
- Hematology and Hemotherapy Center, University of Campinas, Campinas, Brazil.,Department of Clinical Medicine, University of Campinas, Campinas, Brazil
| | - Fernanda Andrade Orsi
- Hematology and Hemotherapy Center, University of Campinas, Campinas, Brazil. .,Department of Clinical Pathology, Faculty of Medical Sciences, University of Campinas, Campinas R. Tessália Vieira de Camargo, 126, Cidade Universitária Zeferino Vaz, Campinas, 13083-887, Brazil.
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Madison JA, Zuo Y, Knight JS. Pediatric antiphospholipid syndrome. Eur J Rheumatol 2020; 7:S3-S12. [PMID: 31804173 PMCID: PMC7004270 DOI: 10.5152/eurjrheum.2019.19160] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 10/01/2019] [Indexed: 12/12/2022] Open
Abstract
Despite its potential to cause significant morbidity in children, pediatric antiphospholipid syndrome (APS) is an understudied condition. In this review, we will cover what is known about pediatric APS epidemiology and how the clinician might approach the diagnosis of pediatric APS. We will highlight similarities and differences with the adult disease, both for primary APS and in the context of lupus. Clinical manifestations beyond thrombosis, especially neurologic and hematologic in nature, will be discussed. We will also consider what unique implications antiphospholipid antibody-positivity may have for children with lupus and for neonates born to mothers with APS. The approach to treatment will be covered, including the unique impact of APS medications on children as compared with adults. Finally, the importance of future mechanistic research is emphasized as physicians endeavor to provide the personalized care that children with APS clearly deserve.
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Affiliation(s)
- Jacqueline A. Madison
- Division of Pediatric Rheumatology, Department of Pediatrics, University of Michigan, Ann Arbor, Michigan, USA
| | - Yu Zuo
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Jason S. Knight
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
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Chaturvedi S, Braunstein EM, Yuan X, Yu J, Alexander A, Chen H, Gavriilaki E, Alluri R, Streiff MB, Petri M, Crowther MA, McCrae KR, Brodsky RA. Complement activity and complement regulatory gene mutations are associated with thrombosis in APS and CAPS. Blood 2020; 135:239-251. [PMID: 31812994 PMCID: PMC6978159 DOI: 10.1182/blood.2019003863] [Citation(s) in RCA: 121] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 11/19/2019] [Indexed: 12/19/2022] Open
Abstract
The antiphospholipid syndrome (APS) is characterized by thrombosis and/or pregnancy morbidity in the presence of antiphospholipid antibodies, including anti-β2-glycoprotein-I (anti-β2GPI), that are considered central to APS pathogenesis. Based on animal studies showing a role of complement in APS-related clinical events, we used the modified Ham (mHam) assay (complement-dependent cell killing) and cell-surface deposition of C5b-9 to test the hypothesis that complement activation is associated with thrombotic events in APS. A positive mHam (and corresponding C5b-9 deposition) were present in 85.7% of catastrophic APS (CAPS), 35.6% of APS (and 68.5% of samples collected within 1 year of thrombosis), and only 6.8% of systemic lupus erythematosus (SLE) sera. A positive mHam assay was associated with triple positivity (for lupus anticoagulant, anticardiolipin, and anti-β2GPI antibodies) and recurrent thrombosis. Patient-derived anti-β2GPI antibodies also induced C5b-9 deposition, which was blocked completely by an anti-C5 monoclonal antibody, but not by a factor D inhibitor, indicating that complement activation by anti-β2GPI antibodies occurs primarily through the classical complement pathway. Finally, patients with CAPS have high rates of rare germline variants in complement regulatory genes (60%), compared with patients with APS (21.8%) or SLE (28.6%) or normal controls (23.3%), and have mutations at a rate similar to that of patients with atypical hemolytic uremic syndrome (51.5%). Taken together, our data suggest that anti-β2GPI antibodies activate complement and contribute to thrombosis in APS, whereas patients with CAPS have underlying mutations in complement regulatory genes that serve as a "second hit," leading to uncontrolled complement activation and a more severe thrombotic phenotype.
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Affiliation(s)
- Shruti Chaturvedi
- Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Evan M Braunstein
- Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Xuan Yuan
- Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Jia Yu
- Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Alice Alexander
- Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Hang Chen
- Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Eleni Gavriilaki
- Department of Hematology, Papanicolaou Hospital, Thessaloniki, Greece
| | - Ravi Alluri
- Division of Hematology and Medical Oncology, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
| | - Michael B Streiff
- Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Michelle Petri
- Division of Rheumatology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD; and
| | - Mark A Crowther
- Department of Pathology and Molecular Medicine, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Keith R McCrae
- Division of Hematology and Medical Oncology, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH
| | - Robert A Brodsky
- Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
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Miranda S, Billoir P, Le Besnerais M, Joannides R, Richard V, Lévesque H, Armengol G, Bellien J, Benhamou Y. New insights into antiphospholipid-related endothelial dysfunction by assessment of vascular glycocalyx layer: results from a preliminary cross-sectional study. Lupus 2020; 29:157-164. [DOI: 10.1177/0961203319897958] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Introduction Antiphospholipid syndrome (APS) is associated with greater atherothrombotic risk and endothelial dysfunction, suggesting that endothelial glycocalyx is impaired in this disease. Objectives The aim was to investigate the endothelial glycocalyx and the relationship between glycocalyx markers, endothelial dysfunction parameters and atherosclerotic markers in APS. Methods A total of 15 primary arterial APS patients and healthy controls were included in the study. Glycocalyx was assessed in both groups by sublingual sidestream dark field imaging and syndecan-1 plasma level. Endothelial function was evaluated by brachial artery flow-mediated dilatation (FMD) and early atherosclerosis by carotid intima media thickness (IMT). Thrombotic profile was also performed by measuring the plasma level of the tissue factor (TF). Results APS patients had significantly increased syndecan-1 plasma level 38.6 ± 5.0 pg/ml vs. 19.1 ± 3.5 pg/ml; p < 0.01 and a reduced glycocalyx thickness 0.26 ± 0.03 µm vs. 0.75 ± 0.07 µm; p < 0.01 compared with control. FMD was impaired in APS patients compared with control, 5.68% ± 0.42 vs. 8.29 ± 0.30, p < 0.01, respectively. IMT was significantly increased in APS patients compared with control, 0.52 ± 0.13 mm vs. 0.40 ± 0.06 mm, p < 0.01, respectively. Soluble TF, thiobarbituric acid-reactive substances levels were increased in the sera from APS patients compared with control. Conclusions This preliminary study supports, for the first time, that in APS patients endothelial glycocalyx is impaired, which could lead to thrombosis, endothelial dysfunction and early atherosclerosis.
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Affiliation(s)
- S Miranda
- Department of Internal Medicine, Rouen University Hospital, Rouen, France
- Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, Rouen, France
| | - P Billoir
- Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, Rouen, France
- Department of Vascular Haemostasis, Rouen University Hospital, Rouen, France
| | - M Le Besnerais
- Department of Internal Medicine, Rouen University Hospital, Rouen, France
- Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, Rouen, France
| | - R Joannides
- Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, Rouen, France
- Department of Pharmacology, Rouen University Hospital, Rouen, France
- Centre d'Investigation Clinique (CIC)-INSERM 1404, Rouen University Hospital, Rouen, France
| | - V Richard
- Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, Rouen, France
| | - H Lévesque
- Department of Internal Medicine, Rouen University Hospital, Rouen, France
- Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, Rouen, France
| | - G Armengol
- Department of Internal Medicine, Rouen University Hospital, Rouen, France
- Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, Rouen, France
| | - J Bellien
- Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, Rouen, France
- Department of Pharmacology, Rouen University Hospital, Rouen, France
- Centre d'Investigation Clinique (CIC)-INSERM 1404, Rouen University Hospital, Rouen, France
| | - Y Benhamou
- Department of Internal Medicine, Rouen University Hospital, Rouen, France
- Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, Rouen, France
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40
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Conti F, Andreoli L, Crisafulli F, Mancuso S, Truglia S, Tektonidou MG. Does seronegative obstetric APS exist? "pro" and "cons". Autoimmun Rev 2019; 18:102407. [PMID: 31639518 DOI: 10.1016/j.autrev.2019.102407] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 06/10/2019] [Indexed: 12/27/2022]
Abstract
Antiphospholipid Syndrome (APS) is the commonest treatable cause of recurrent miscarriage and pharmacological treatment of pregnant patients with antiphospholipid antibodies (aPL) should aim at preventing obstetric complications and maternal thrombotic events. Conventional treatment for patients with an established diagnosis of obstetric APS (OAPS), generally resulting in over 70-80% successful pregnancies. Since seropositive (SP)-APS and seronegative (SN)-APS patients had shown similar clinical profiles, patients with SN- OAPS, as well as SP-OAPS, should receive combined treatment in order to improve the pregnancy prognosis; indeed, current standard of care increased good pregnancy outcome in SN-APS, with similar effect to confirmed APS. The above data suggest that there are patients with the clinical manifestations of OAPS but persistently negative to conventional aPL that need to be identified to ensure adequate therapy and therefore a better prognosis. The clinical utility of non-criteria aPL in the diagnosis of SN-APS is still a matter of debate. In the last decade more and more studies have reported the presence of patients suffering from SN-APS in which non-conventional ("non-criteria") aPL might be present or antibodies may be detected using methodological approaches different from the traditional assays. To improve test standardization large prospective, multicenter, and multinational studies are needed. Therefore, when assessing a patient with clinical manifestations consistent with OAPS but aPL negative using the conventional available assays, the clinician should consider the possibility that the patient is affected with SN-APS.
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Affiliation(s)
- Fabrizio Conti
- Lupus Clinic, Rheumatology Unit, Dipartimento Di Scienze Cliniche Internistiche, Anestesiologiche e Cardiovascolari, Sapienza University of Rome, Rome, Italy
| | - Laura Andreoli
- Rheumatology and Clinical Immunology, Spedali Civili, Brescia; Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy
| | - Francesca Crisafulli
- Rheumatology and Clinical Immunology, Spedali Civili, Brescia; Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy
| | - Silvia Mancuso
- Lupus Clinic, Rheumatology Unit, Dipartimento Di Scienze Cliniche Internistiche, Anestesiologiche e Cardiovascolari, Sapienza University of Rome, Rome, Italy
| | - Simona Truglia
- Lupus Clinic, Rheumatology Unit, Dipartimento Di Scienze Cliniche Internistiche, Anestesiologiche e Cardiovascolari, Sapienza University of Rome, Rome, Italy.
| | - Maria G Tektonidou
- Head of Rheumatology Unit, First Department of Propaedeutic Internal Medicine, School of Medicine, National University of Athens, Greece
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41
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Buttari B, Profumo E, Capozzi A, Saso L, Sorice M, Riganò R. Post-translational modifications of proteins in antiphospholipid antibody syndrome. Crit Rev Clin Lab Sci 2019; 56:511-525. [DOI: 10.1080/10408363.2019.1650714] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Brigitta Buttari
- Department of Cardiovascular and Endocrine-Metabolic Diseases and Aging, Istituto Superiore di Sanità, Rome, Italy
| | - Elisabetta Profumo
- Department of Cardiovascular and Endocrine-Metabolic Diseases and Aging, Istituto Superiore di Sanità, Rome, Italy
| | - Antonella Capozzi
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Luciano Saso
- Department of Physiology and Pharmacology, “Vittorio Erspamer”, Sapienza University of Rome, Rome, Italy
| | - Maurizio Sorice
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Rachele Riganò
- Department of Cardiovascular and Endocrine-Metabolic Diseases and Aging, Istituto Superiore di Sanità, Rome, Italy
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Patsouras M, Karagianni P, Kogionou P, Vlachoyiannopoulos P. Differential CpG methylation of the promoter of interleukin 8 and the first intron of tissue factor in Antiphospholipid syndrome. J Autoimmun 2019; 102:159-166. [DOI: 10.1016/j.jaut.2019.05.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 05/01/2019] [Accepted: 05/04/2019] [Indexed: 02/07/2023]
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Ali RA, Gandhi AA, Meng H, Yalavarthi S, Vreede AP, Estes SK, Palmer OR, Bockenstedt PL, Pinsky DJ, Greve JM, Diaz JA, Kanthi Y, Knight JS. Adenosine receptor agonism protects against NETosis and thrombosis in antiphospholipid syndrome. Nat Commun 2019; 10:1916. [PMID: 31015489 PMCID: PMC6478874 DOI: 10.1038/s41467-019-09801-x] [Citation(s) in RCA: 135] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 03/29/2019] [Indexed: 12/11/2022] Open
Abstract
Potentiation of neutrophil extracellular trap (NET) release is one mechanism by which antiphospholipid antibodies (aPL Abs) effect thrombotic events in patients with antiphospholipid syndrome (APS). Surface adenosine receptors trigger cyclic AMP (cAMP) formation in neutrophils, and this mechanism has been proposed to regulate NETosis in some contexts. Here we report that selective agonism of the adenosine A2A receptor (CGS21680) suppresses aPL Ab-mediated NETosis in protein kinase A-dependent fashion. CGS21680 also reduces thrombosis in the inferior vena cavae of both control mice and mice administered aPL Abs. The antithrombotic medication dipyridamole is known to potentiate adenosine signaling by increasing extracellular concentrations of adenosine and interfering with the breakdown of cAMP. Like CGS21680, dipyridamole suppresses aPL Ab-mediated NETosis via the adenosine A2A receptor and mitigates venous thrombosis in mice. In summary, these data suggest an anti-inflammatory therapeutic paradigm in APS, which may extend to thrombotic disease in the general population. Antiphospholipid syndrome is characterised by increased neutrophil extracellular trap formation (NETosis) and, consequently, increased thrombotic events. Here Ali et al. show that treatment with adenosine receptor agonists suppresses NETosis and venous thrombosis in mouse models of antiphospholipid syndrome.
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Affiliation(s)
- Ramadan A Ali
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Alex A Gandhi
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - He Meng
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Srilakshmi Yalavarthi
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Andrew P Vreede
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Shanea K Estes
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Olivia R Palmer
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Paula L Bockenstedt
- Division of Hematology and Oncology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, 48109, USA
| | - David J Pinsky
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, 48109, USA.,Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Joan M Greve
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Jose A Diaz
- Department of Vascular Surgery, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Yogendra Kanthi
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA.,Division of Cardiology, Ann Arbor Veterans Administration Healthcare System, Ann Arbor, MI, 48109, USA
| | - Jason S Knight
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, 48109, USA.
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D'Angelo C, Franch O, Fernández-Paredes L, Oreja-Guevara C, Núñez-Beltrán M, Comins-Boo A, Reale M, Sánchez-Ramón S. Antiphospholipid Antibodies Overlapping in Isolated Neurological Syndrome and Multiple Sclerosis: Neurobiological Insights and Diagnostic Challenges. Front Cell Neurosci 2019; 13:107. [PMID: 30941020 PMCID: PMC6433987 DOI: 10.3389/fncel.2019.00107] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Accepted: 03/04/2019] [Indexed: 01/19/2023] Open
Abstract
Antiphospholipid syndrome (APS) is characterized by arterial and venous thrombosis, pregnancy morbidity and fetal loss caused by pathogenic autoantibodies directed against phospholipids (PL) and PL-cofactors. Isolated neurological APS may represent a significant diagnostic challenge, as epidemiological, clinical and neuroimaging features may overlap with those of multiple sclerosis (MS). In an open view, MS could be considered as an organ-specific anti-lipid (phospholipid and glycosphingolipid associated proteins) disease, in which autoreactive B cells and CD8+ T cells play a dominant role in its pathophysiology. In MS, diverse autoantibodies against the lipid-protein cofactors of the myelin sheath have been described, whose pathophysiologic role has not been fully elucidated. We carried out a review to select clinical studies addressing the prevalence of antiphospholipid (aPL) autoantibodies in the so-called MS-like syndrome. The reported prevalence ranged between 2% and 88%, particularly aCL and aβ2GPI, with predominant IgM isotype and suggesting worse MS prognosis. Secondarily, an updated summary of current knowledge on the pathophysiological mechanisms and events responsible for these conditions is presented. We draw attention to the clinical relevance of diagnosing isolated neurological APS. Prompt and accurate diagnosis and antiaggregant and anticoagulant treatment of APS could be vital to prevent or at least reduce APS-related morbidity and mortality.
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Affiliation(s)
- Chiara D'Angelo
- Department of Clinical Immunology and IdISSC, Hospital Clínico San Carlos, Madrid, Spain.,Department of Immunology, Ophthalmology and ENT, Complutense University School of Medicine, Madrid, Spain.,Department of Medical, Oral and Biotechnological Sciences, University "G. d'Annunzio" Chieti-Pescara, Chieti, Italy
| | - Oriol Franch
- Department of Neurology, Hospital Ruber Internacional, Madrid, Spain
| | - Lidia Fernández-Paredes
- Department of Clinical Immunology and IdISSC, Hospital Clínico San Carlos, Madrid, Spain.,Department of Immunology, Ophthalmology and ENT, Complutense University School of Medicine, Madrid, Spain
| | | | - María Núñez-Beltrán
- Department of Clinical Immunology and IdISSC, Hospital Clínico San Carlos, Madrid, Spain
| | - Alejandra Comins-Boo
- Department of Clinical Immunology and IdISSC, Hospital Clínico San Carlos, Madrid, Spain.,Department of Immunology, Ophthalmology and ENT, Complutense University School of Medicine, Madrid, Spain
| | - Marcella Reale
- Department of Medical, Oral and Biotechnological Sciences, University "G. d'Annunzio" Chieti-Pescara, Chieti, Italy
| | - Silvia Sánchez-Ramón
- Department of Clinical Immunology and IdISSC, Hospital Clínico San Carlos, Madrid, Spain.,Department of Immunology, Ophthalmology and ENT, Complutense University School of Medicine, Madrid, Spain
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Manganelli V, Truglia S, Capozzi A, Alessandri C, Riitano G, Spinelli FR, Ceccarelli F, Mancuso S, Garofalo T, Longo A, Valesini G, Sorice M, Conti F, Misasi R. Alarmin HMGB1 and Soluble RAGE as New Tools to Evaluate the Risk Stratification in Patients With the Antiphospholipid Syndrome. Front Immunol 2019; 10:460. [PMID: 30923525 PMCID: PMC6426766 DOI: 10.3389/fimmu.2019.00460] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 02/20/2019] [Indexed: 12/13/2022] Open
Abstract
Antiphospholipid antibody syndrome (APS) is a systemic autoimmune disease characterized by arterial and/or venous thrombosis, pregnancy morbidity in the presence of circulating “anti-phospholipid antibodies” (aPL). One of the main target antigens of aPL is β2-glycoprotein I (β2-GPI). APS may occur as a primary syndrome or associated with Systemic Lupus Erythematosus (SLE). High Mobility Group Box 1 (HMGB1) is a nuclear non-histone protein which is secreted from different type of cells during activation and/or cell death and may act as a proinflammatory mediator through ligation to its receptors, including RAGE. There is accumulating evidence that HMGB1 contributes to the pathogenesis of inflammatory and autoimmune diseases, especially SLE. In a previous study we demonstrated increased serum levels of HMGB1 in both primary and secondary APS patients. In this work we analyzed: (i) in vitro whether anti-β2-GPI antibodies from APS patients may induce both a HMGB1 cellular relocation by activation of its putative receptor RAGE in platelets and monocytes and, (ii) ex vivo, serum levels of HMGB1/soluble RAGE (sRAGE) in APS patients and their possible correlation with clinical manifestations. Platelets and monocytes from healthy donors were incubated with affinity purified anti-β2-GPI antibodies. HMGB1 and RAGE expression were analyzed by Western Blot. Sera from 60 consecutive APS patients (primary or secondary), diagnosed according to the Sydney Classification Criteria, were enrolled. As a control, 30 matched healthy subjects were studied. Serum levels of HMGB1 and sRAGE were analyzed by Western Blot. In vitro results showed that anti-β2-GPI antibodies were able to induce RAGE activation and HMGB1 cellular relocation in both monocytes and platelets. HMGB1 and sRAGE serum levels were significantly increased in APS patients in comparison with healthy subjects (p<0.0001). Interestingly, APS patients with spontaneous recurrent abortion showed significantly higher levels of sRAGE; moreover, in APS patients a direct correlation between serum levels of HMGB1 and disease duration was detected. Our observations suggest that anti-β2-GPI antibodies may trigger RAGE activation and HMGB1 cellular relocation during APS. Monitoring these molecules serum levels may represent an useful tool to evaluate the pathogenesis and risk stratification of clinical manifestations in APS.
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Affiliation(s)
- Valeria Manganelli
- Dipartimento di Medicina Sperimentale, Sapienza Università di Roma, Rome, Italy
| | - Simona Truglia
- Reumatologia, Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome, Italy
| | - Antonella Capozzi
- Dipartimento di Medicina Sperimentale, Sapienza Università di Roma, Rome, Italy
| | - Cristiano Alessandri
- Reumatologia, Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome, Italy
| | - Gloria Riitano
- Dipartimento di Medicina Sperimentale, Sapienza Università di Roma, Rome, Italy
| | - Francesca Romana Spinelli
- Reumatologia, Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome, Italy
| | - Fulvia Ceccarelli
- Reumatologia, Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome, Italy
| | - Silvia Mancuso
- Reumatologia, Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome, Italy
| | - Tina Garofalo
- Dipartimento di Medicina Sperimentale, Sapienza Università di Roma, Rome, Italy
| | - Agostina Longo
- Dipartimento di Medicina Sperimentale, Sapienza Università di Roma, Rome, Italy
| | - Guido Valesini
- Reumatologia, Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome, Italy
| | - Maurizio Sorice
- Dipartimento di Medicina Sperimentale, Sapienza Università di Roma, Rome, Italy
| | - Fabrizio Conti
- Reumatologia, Dipartimento di Medicina Interna e Specialità Mediche, Sapienza Università di Roma, Rome, Italy
| | - Roberta Misasi
- Dipartimento di Medicina Sperimentale, Sapienza Università di Roma, Rome, Italy
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46
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Chaturvedi S, Brodsky RA, McCrae KR. Complement in the Pathophysiology of the Antiphospholipid Syndrome. Front Immunol 2019; 10:449. [PMID: 30923524 PMCID: PMC6426753 DOI: 10.3389/fimmu.2019.00449] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Accepted: 02/19/2019] [Indexed: 12/16/2022] Open
Abstract
The antiphospholipid syndrome (APS) is characterized by thrombosis and pregnancy morbidity in the presence of antiphospholipid antibodies (aPL). Complement is a system of enzymes and regulatory proteins of the innate immune system that plays a key role in the inflammatory response to pathogenic stimuli. The complement and coagulation pathways are closely linked, and expanding data indicate that complement may be activated in patients with aPL and function as a cofactor in the pathogenesis of aPL-associated clinical events. Complement activation by aPL generates C5a, which induces neutrophil tissue factor-dependent procoagulant activity. Beta-2-glycoprotein I, the primary antigen for pathogenic aPL, has complement regulatory effects in vitro. Moreover, aPL induce fetal loss in wild-type mice but not in mice deficient in specific complement components (C3, C5). Antiphospholipid antibodies also induce thrombosis in wild type mice and this effect is attenuated in C3 or C6 deficient mice, or in the presence of a C5 inhibitor. Increased levels of complement activation products have been demonstrated in sera of patients with aPL, though the association with clinical events remains unclear. Eculizumab, a terminal complement inhibitor, has successfully been used to treat catastrophic APS and prevent APS-related thrombotic microangiopathy in the setting of renal transplant. However, the mechanisms of complement activation in APS, its role in the pathogenesis of aPL related complications in humans, and the potential of complement inhibition as a therapeutic target in APS require further study.
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Affiliation(s)
- Shruti Chaturvedi
- Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Robert A Brodsky
- Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Keith R McCrae
- Hematologic Oncology and Blood Disorders, Taussig Cancer Institute, Cleveland, OH, United States.,Department of Cellular and Molecular Medicine, Cleveland Clinic, Cleveland, OH, United States
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47
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Tang KT, Hsieh TY, Chao YH, Li JP, Lan JL, Lin CC, Chen DY. Apoptosis in patients with primary antiphospholipid antibody syndrome. Int J Rheum Dis 2019; 22:677-685. [PMID: 30729698 DOI: 10.1111/1756-185x.13468] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 11/05/2018] [Accepted: 12/19/2018] [Indexed: 01/27/2023]
Abstract
AIM Dysregulated apoptosis has been implicated in autoimmune diseases. In the present study, we investigated the apoptosis-related cytokines and apoptosis in patients with primary antiphospholipid syndrome (pAPS). METHOD We prospectively recruited 12 pAPS patients, 17 antiphospholipid antibody (APA)-positive systemic lupus erythematosus (SLE) patients without APS manifestations (APA+ SLE), 13 SLE patients with secondary APS (APS+ SLE) and 10 healthy controls (HCs). Plasma levels of soluble apoptosis-inducing ligands and cytokines, and the expression levels of apoptosis-inducing ligands in peripheral blood mononuclear cells, were determined. In addition, blood lymphocytes/monocytes apoptosis were determined in six pAPS patients and six HCs, using flow cytometric analysis of caspase 3, 8 and 9 activities. RESULTS There was a trend toward higher plasma levels of soluble tumor necrosis factor (TNF)-related apoptosis-inducing ligand (sTRAIL), interleukin-10 (IL-10) and TNF-α in pAPS patients when compared with HCs. We also observed higher plasma levels of IL-10 and TNF α in APA+ SLE and APS+ SLE patients when compared with HCs. However, there was no significant difference in blood lymphocytes/monocytes apoptosis between pAPS patients and HCs. CONCLUSION There was a trend toward elevated plasma levels of sTRAIL, IL-10 and TNF-α, but no evidence for dysregulated apoptosis in pAPS patients.
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Affiliation(s)
- Kuo-Tung Tang
- Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Tsu-Yi Hsieh
- Division of Allergy, Immunology and Rheumatology, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Ya-Hsuan Chao
- Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung-Hsing University, Taichung, Taiwan
| | - Ju-Pi Li
- Translational Medicine Laboratory, Rheumatic Diseases Research Center, China Medical University Hospital, Taichung, Taiwan.,Rheumatology and Immunology Center, China Medical University Hospital, Taichung, Taiwan
| | - Joung-Liang Lan
- Translational Medicine Laboratory, Rheumatic Diseases Research Center, China Medical University Hospital, Taichung, Taiwan.,Rheumatology and Immunology Center, China Medical University Hospital, Taichung, Taiwan.,School of Medicine, China Medical University, Taichung, Taiwan
| | - Chi-Chien Lin
- Institute of Biomedical Science and Rong Hsing Research Center for Translational Medicine, National Chung-Hsing University, Taichung, Taiwan.,Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Der-Yuan Chen
- Translational Medicine Laboratory, Rheumatic Diseases Research Center, China Medical University Hospital, Taichung, Taiwan.,Rheumatology and Immunology Center, China Medical University Hospital, Taichung, Taiwan.,School of Medicine, China Medical University, Taichung, Taiwan
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Capozzi A, Manganelli V, Riitano G, Recalchi S, Truglia S, Alessandri C, Longo A, Garofalo T, Misasi R, Valesini G, Conti F, Sorice M. Tissue factor over-expression in platelets of patients with anti-phospholipid syndrome: induction role of anti-β2-GPI antibodies. Clin Exp Immunol 2019; 196:59-66. [PMID: 30549270 DOI: 10.1111/cei.13248] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/26/2018] [Indexed: 12/13/2022] Open
Abstract
Anti-phospholipid syndrome (APS) is characterized by arterial and/or venous thrombosis and pregnancy morbidity. It is well known that in these patients thrombosis may be the result of a hypercoagulable state related to anti-β2-glycoprotein I (β2-GPI) antibodies. Moreover, platelets may play a role in thrombotic manifestations by binding of anti-β2-GPI antibodies. Platelets express tissue factor (TF), the major initiator of the clotting cascade, after activation. We primarily analyzed whether anti-β2-GPI antibodies may trigger a signal transduction pathway leading to TF expression in human platelets. Platelets from healthy donors were incubated with affinity purified anti-β2-GPI antibodies for different times. Platelet lysates were analyzed for phospho-interleukin-1 receptor-associated kinase 1 (IRAK), phospho-p65 nuclear factor kappaB (NF-κB) and TF by Western blot. IRAK phosphorylation was observed as early as 10 min of anti-β2-GPI treatment, with consequent NF-κB activation, whereas TF expression, detectable at 45 min, was significantly increased after 4 h of anti-β2-GPI treatment. Virtually no activation was observed following treatment with control immunoglobulin IgG. We then analyzed TF expression in platelets from 20 APS patients and 20 healthy donors. We observed a significant increase of TF in APS patients versus control subjects (P < 0·0001). This work demonstrates that anti-β2-GPI antibodies may trigger in vitro a signal transduction pathway in human platelets, which involves IRAK phosphorylation and NF-κB activation, followed by TF expression. Furthermore, ex vivo, platelets of APS patients showed a significantly increased expression of TF. These findings support the view that platelets may play a role in the pathogenesis of APS, with consequent release of different procoagulant mediators, including TF.
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Affiliation(s)
- A Capozzi
- Department of Experimental Medicine, 'La Sapienza' University of Rome, Rome, Italy
| | - V Manganelli
- Department of Experimental Medicine, 'La Sapienza' University of Rome, Rome, Italy
| | - G Riitano
- Department of Experimental Medicine, 'La Sapienza' University of Rome, Rome, Italy
| | - S Recalchi
- Department of Experimental Medicine, 'La Sapienza' University of Rome, Rome, Italy
| | - S Truglia
- Rheumatology Unit, Department of Internal Medicine and Medical Specialties, 'La Sapienza' University of Rome, Rome, Italy
| | - C Alessandri
- Rheumatology Unit, Department of Internal Medicine and Medical Specialties, 'La Sapienza' University of Rome, Rome, Italy
| | - A Longo
- Department of Experimental Medicine, 'La Sapienza' University of Rome, Rome, Italy
| | - T Garofalo
- Department of Experimental Medicine, 'La Sapienza' University of Rome, Rome, Italy
| | - R Misasi
- Department of Experimental Medicine, 'La Sapienza' University of Rome, Rome, Italy
| | - G Valesini
- Rheumatology Unit, Department of Internal Medicine and Medical Specialties, 'La Sapienza' University of Rome, Rome, Italy
| | - F Conti
- Rheumatology Unit, Department of Internal Medicine and Medical Specialties, 'La Sapienza' University of Rome, Rome, Italy
| | - M Sorice
- Department of Experimental Medicine, 'La Sapienza' University of Rome, Rome, Italy
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Edel Y, Kliminski V, Pokroy-Shapira E, Oren S, Dortort Lazar A, Pri-Paz Basson Y, Egbaria M, Molad Y. Elevated plasma level of soluble triggering receptor expressed on myeloid cells-1 is associated with inflammation activity and is a potential biomarker of thrombosis in primary antiphospholipid syndrome. Arthritis Res Ther 2019; 21:10. [PMID: 30616644 PMCID: PMC6323669 DOI: 10.1186/s13075-018-1779-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 11/27/2018] [Indexed: 01/28/2023] Open
Abstract
Background Soluble triggering receptor expressed on myeloid cells-1 (sTREM-1) is an innate-immune receptor found in blood. Its presence reflects innate immune cell activation. We sought to investigate plasma sTREM-1 levels in patients with primary antiphospholipid syndrome (PAPS). Methods A cross-sectional, case-control design was used. Plasma sTREM-1 levels were analyzed by enzyme-linked immunosorbent assay (ELISA) in consecutive patients diagnosed with PAPS or asymptomatic antiphospholipid antibody (APLA) carriers and controls. Results The study cohort included 33 patients with PAPS, 10 asymptomatic APLA carriers, and 73 controls. Mean plasma sTREM-1 levels were significantly higher in patients with PAPS (299.2 ± 146.7 pg/ml) and thrombotic PAPS-ever (current and past thrombotic event) (327.2 ± 151.3 pg/ml) compared with controls (230.2 ± 85.5 pg/ml; p = 0.006 and p = 0.003, respectively), patients with thrombotic PAPS compared with patients with past obstetric APS (195.12 ± 58.52 pg/ml, p = 0.01) and APLA carriers (215.8 ± 51.6 pg/ml, p = 0.02), patients with current thrombotic PAPS (429.5 ± 227.5 pg/ml) compared with patients with past thrombotic PAPS (289.5 ± 94.65 pg/ml, p = 0.01), and patients with PAPS who had ever had a stroke or venous thromboembolic event compared with patients who had not (p = 0.007 and p = 0.02, respectively). On receiver operator characteristic curve analysis, plasma sTREM-1 levels differentiated patients with current thrombotic PAPS from asymptomatic APLA carriers and controls, with an area under the curve of 0.7292 (p = 0.0014) and 0.88 (p < 0.0001), respectively. Multivariate regression analysis to identify sTREM-1 predictors (thrombotic PAPS-ever, age, and sex) yielded an independent association of sTREM-1 levels with thrombotic PAPS (p < 0.0001). Conclusions Plasma sTREM-1 levels are significantly elevated in patients with thrombotic PAPS. Levels of sTREM-1 might serve as a biomarker for thrombosis in patients with PAPS.
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Affiliation(s)
- Yonatan Edel
- Rheumatology Unit, Rabin Medical Center - Beilinson Hospital, 4941492, Petach Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Vitaly Kliminski
- Laboratory of Inflammation Research, Felsenstein Medical Research Center, Rabin Medical Center - Beilinson Hospital, Petach Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Elisheva Pokroy-Shapira
- Rheumatology Unit, Rabin Medical Center - Beilinson Hospital, 4941492, Petach Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Shirly Oren
- Rheumatology Unit, Rabin Medical Center - Beilinson Hospital, 4941492, Petach Tikva, Israel
| | - Ariela Dortort Lazar
- Rheumatology Unit, Rabin Medical Center - Beilinson Hospital, 4941492, Petach Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yael Pri-Paz Basson
- Rheumatology Unit, Rabin Medical Center - Beilinson Hospital, 4941492, Petach Tikva, Israel
| | - Mohammad Egbaria
- Rheumatology Unit, Rabin Medical Center - Beilinson Hospital, 4941492, Petach Tikva, Israel
| | - Yair Molad
- Rheumatology Unit, Rabin Medical Center - Beilinson Hospital, 4941492, Petach Tikva, Israel. .,Laboratory of Inflammation Research, Felsenstein Medical Research Center, Rabin Medical Center - Beilinson Hospital, Petach Tikva, Israel. .,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
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50
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Mulla MJ, Pasternak MC, Salmon JE, Chamley LW, Abrahams VM. Role of NOD2 in antiphospholipid antibody-induced and bacterial MDP amplification of trophoblast inflammation. J Autoimmun 2018; 98:103-112. [PMID: 30594350 DOI: 10.1016/j.jaut.2018.12.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 12/14/2018] [Accepted: 12/16/2018] [Indexed: 10/27/2022]
Abstract
Women with antiphospholipid antibodies (aPL) are at high risk for pregnancy complications, such as preeclampsia. We previously demonstrated that aPL recognizing β2GPI promote an extravillous trophoblast pro-inflammatory, anti-migratory and anti-angiogenic profile similar to that seen in preeclampsia. Since preeclampsia in the absence of aPL may have an underlying infectious element, women with aPL may be at increased risk for preeclampsia or other adverse outcomes if an infection is present. Our objective was to determine the impact the common bacterial component, muramyl dipeptide (MDP), has on trophoblast responses to aPL. Herein, we report that bacterial MDP amplifies trophoblast IL-1β expression, processing, and secretion in the presence of aPL through activation of NOD2. In the absence of MDP, NOD2 also mediates anti- β2GPI antibody-induced trophoblast IL-1β and VEGF secretion. Additionally, we report a role for extravillous trophoblast vimentin as a novel danger signal that contributes to the aPL-induced trophoblast IL-1β production. Together our data indicate that NOD2 mediates trophoblast inflammatory and angiogenic responses to aPL alone, and mediates trophoblast inflammation in the presence of bacterial MDP. These findings suggest that a bacterial infection at the maternal-fetal interface may exacerbate the impact aPL have on trophoblast inflammation and, thus, on pregnancy outcome.
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Affiliation(s)
- Melissa J Mulla
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale University, New Haven, CT, USA
| | - Monica C Pasternak
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale University, New Haven, CT, USA
| | - Jane E Salmon
- Department of Medicine, Hospital for Special Surgery, New York, NY, USA
| | - Lawrence W Chamley
- Department of Obstetrics & Gynecology, University of Auckland, Auckland, New Zealand
| | - Vikki M Abrahams
- Department of Obstetrics, Gynecology & Reproductive Sciences, Yale University, New Haven, CT, USA.
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