Dysregulated neutrophil responses and neutrophil extracellular trap formation and degradation in PAPA syndrome.
Objectives: Pyogenic arthritis, pyoderma gangrenosum and acne (PAPA) syndrome is characterised by flares of sterile arthritis with neutrophil infiltrate and the overproduction of interleukin (IL)-1β. The purpose of this study was to elucidate the potential role of neutrophil subsets and neutrophil e...
| Publicado en: | Annals of the Rheumatic Diseases Vol. 77; no. 12; pp. 1825 - 1834 |
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| Autores principales: | , , , , , , , , , , , , , , , |
| Formato: | Journal Article |
| Publicado: |
Elsevier B.V.
Dec2018
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=133101503&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 133101503 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00034967 ANR jtl: Annals of the Rheumatic Diseases issn: 00034967 maglogo: N pubinfo: dt: Dec2018 vid: 77 iid: 12 pid: 467 pub: Elsevier B.V. place: New York, New York artinfo: ui: 133101503 133101503 NLM30131320 10.1136/annrheumdis-2018-213746 NLM30131320 133101503 ppf: 1825 ppct: 9 formats: tig: atl: Dysregulated neutrophil responses and neutrophil extracellular trap formation and degradation in PAPA syndrome. aug: au: Mistry, Pragnesh Carmona-Rivera, Carmelo Ombrello, Amanda K. Hoffmann, Patrycja Seto, Nickie L. Jones, Anne Stone, Deborah L. Naz, Faiza Carlucci, Philip Dell'Orso, Stefania Gutierrez-Cruz, Gustavo Hong-Wei Sun Kastner, Daniel L. Aksentijevich, Ivona Kaplan, Mariana J. Sun, Hong-Wei affil: Systemic Autoimmunity Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Bethesda, Maryland, USA sug: subj: Neutrophils Immunology Arthritis, Infectious Immunology Extracellular Space Immunology Pyoderma Gangrenosum Immunology Acne Vulgaris Immunology Acne Vulgaris Metabolism Female Male Pyoderma Gangrenosum Metabolism Adult Neutrophils Metabolism Arthritis, Infectious Metabolism Extracellular Space Metabolism Middle Age Arthritis Impact Measurement Scales Adult: 19-44 years Middle Aged: 45-64 years Female Male ab: Objectives: Pyogenic arthritis, pyoderma gangrenosum and acne (PAPA) syndrome is characterised by flares of sterile arthritis with neutrophil infiltrate and the overproduction of interleukin (IL)-1β. The purpose of this study was to elucidate the potential role of neutrophil subsets and neutrophil extracellular traps (NET) in the pathogenesis of PAPA.Methods: Neutrophils and low-density granulocytes (LDG) were quantified by flow cytometry. Circulating NETs were measured by ELISA and PAPA serum was tested for the ability to degrade NETs. The capacity of NETs from PAPA neutrophils to activate macrophages was assessed. Skin biopsies were analysed for NETs and neutrophil gene signatures.Results: Circulating LDGs are elevated in PAPA subjects. PAPA neutrophils and LDGs display enhanced NET formation compared with control neutrophils. PAPA sera exhibit impaired NET degradation and this is corrected with exogenous DNase1. Recombinant human IL-1β induces NET formation in PAPA neutrophils but not healthy control neutrophils. NET formation in healthy control neutrophils is induced by PAPA serum and this effect is inhibited by the IL-1 receptor antagonist, anakinra. NETs from PAPA neutrophils and LDGs stimulate IL-6 release in healthy control macrophages. NETs are detected in skin biopsies of patients with PAPA syndrome in association with increased tissue IL-1β, IL-8 and IL-17. Furthermore, LDG gene signatures are detected in PAPA skin.Conclusions: PAPA syndrome is characterised by an imbalance of NET formation and degradation that may enhance the half-life of these structures in vivo, promoting inflammation. Anakinra ameliorates NET formation in PAPA and this finding supports a role for IL-1 signalling in exacerbated neutrophil responses in this disease. The study also highlights other inflammatory pathways potentially pathogenic in PAPA, including IL-17 and IL-6, and these results may help guide new therapeutic approaches in this severe and often treatment-refractory condition. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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