Neutrophil‐mediated mechanisms of damage and in‐vitro protective effect of colchicine in non‐vascular Behçet’s syndrome

Behçet’s syndrome (BS) is a systemic vasculitis with several clinical manifestations. Neutrophil hyperactivation mediates vascular BS pathogenesis, via both a massive reactive oxygen species (ROS) production and neutrophil extracellular traps (NETs) release. Here, we investigated neutrophil‐mediated...

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Veröffentlicht in:Clinical and experimental immunology 2021-12, Vol.206 (3), p.410-421
Hauptverfasser: Bettiol, Alessandra, Becatti, Matteo, Silvestri, Elena, Argento, Flavia Rita, Fini, Eleonora, Mannucci, Amanda, Galora, Silvia, Mattioli, Irene, Urban, Maria Letizia, Malandrino, Danilo, Palermo, Adalgisa, Taddei, Niccolò, Emmi, Giacomo, Prisco, Domenico, Fiorillo, Claudia
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container_start_page 410
container_title Clinical and experimental immunology
container_volume 206
creator Bettiol, Alessandra
Becatti, Matteo
Silvestri, Elena
Argento, Flavia Rita
Fini, Eleonora
Mannucci, Amanda
Galora, Silvia
Mattioli, Irene
Urban, Maria Letizia
Malandrino, Danilo
Palermo, Adalgisa
Taddei, Niccolò
Emmi, Giacomo
Prisco, Domenico
Fiorillo, Claudia
description Behçet’s syndrome (BS) is a systemic vasculitis with several clinical manifestations. Neutrophil hyperactivation mediates vascular BS pathogenesis, via both a massive reactive oxygen species (ROS) production and neutrophil extracellular traps (NETs) release. Here, we investigated neutrophil‐mediated mechanisms of damage in non‐vascular BS manifestations and explored the in‐vitro effects of colchicine in counteracting these mechanisms. NETs and intracellular ROS production was assessed in blood samples from 80 BS patients (46 with active non‐vascular BS, 34 with inactive disease) and 80 healthy controls. Moreover, isolated neutrophils were incubated for 1 h with an oxidating agent [2,2′‐azobis (2‐amidinopropane) dihydrochloride; 250 nM] and the ability of pure colchicine pretreatment (100 ng/ml) to counteract oxidation‐induced damage was assessed. Patients with active non‐vascular BS showed remarkably increased NET levels [21.2, interquartile range (IQR) = 18.3–25.9 mU/ml] compared to patients with inactive disease (16.8, IQR = 13.3–20.2 mU/ml) and to controls (7.1, IQR = 5.1–8.7 mU/ml, p 
doi_str_mv 10.1111/cei.13664
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Neutrophil hyperactivation mediates vascular BS pathogenesis, via both a massive reactive oxygen species (ROS) production and neutrophil extracellular traps (NETs) release. Here, we investigated neutrophil‐mediated mechanisms of damage in non‐vascular BS manifestations and explored the in‐vitro effects of colchicine in counteracting these mechanisms. NETs and intracellular ROS production was assessed in blood samples from 80 BS patients (46 with active non‐vascular BS, 34 with inactive disease) and 80 healthy controls. Moreover, isolated neutrophils were incubated for 1 h with an oxidating agent [2,2′‐azobis (2‐amidinopropane) dihydrochloride; 250 nM] and the ability of pure colchicine pretreatment (100 ng/ml) to counteract oxidation‐induced damage was assessed. Patients with active non‐vascular BS showed remarkably increased NET levels [21.2, interquartile range (IQR) = 18.3–25.9 mU/ml] compared to patients with inactive disease (16.8, IQR = 13.3–20.2 mU/ml) and to controls (7.1, IQR = 5.1–8.7 mU/ml, p &lt; 0.001]. Also, intracellular ROS tended to increase in active BS, although not significantly. In active non‐vascular BS, NETs correlated with neutrophil ROS production (p &lt; 0.001) and were particularly increased in patients with active mucosal (p &lt; 0.001), articular (p = 0.004) and gastrointestinal symptoms (p = 0.006). In isolated neutrophils, colchicine significantly reduced oxidation‐induced NET production and cell apoptosis, although not via an anti‐oxidant activity. Neutrophil‐mediated mechanisms might be directly involved in non‐vascular BS, and NETs, more than ROS, might drive the pathogenesis of mucosal, articular and intestinal manifestations. Colchicine might be effective in counteracting neutrophils‐mediated damage in BS, although further studies are needed. Neutrophil‐mediated mechanisms of damage might be directly involved in non‐vascular Behçet's syndrome. Neutrophil extracellular traps (NETs), more than an impaired redox status, might play a central role in the pathogenesis of mucosal, articular and intestinal BS manifestations. 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Colchicine might be effective in counteracting neutrophils‐mediated damage in BS, although further studies are needed. Neutrophil‐mediated mechanisms of damage might be directly involved in non‐vascular Behçet's syndrome. Neutrophil extracellular traps (NETs), more than an impaired redox status, might play a central role in the pathogenesis of mucosal, articular and intestinal BS manifestations. 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Becatti, Matteo ; Silvestri, Elena ; Argento, Flavia Rita ; Fini, Eleonora ; Mannucci, Amanda ; Galora, Silvia ; Mattioli, Irene ; Urban, Maria Letizia ; Malandrino, Danilo ; Palermo, Adalgisa ; Taddei, Niccolò ; Emmi, Giacomo ; Prisco, Domenico ; Fiorillo, Claudia</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4434-65010a4a3306a10c82309d1c1ce0c065c8bd95b079f227e899ba6cc64f9701723</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Adult</topic><topic>Anti-Inflammatory Agents - therapeutic use</topic><topic>Antioxidants - therapeutic use</topic><topic>Apoptosis</topic><topic>autoimmunity</topic><topic>Behcet Syndrome - drug therapy</topic><topic>Behcet Syndrome - pathology</topic><topic>Behcet's syndrome</topic><topic>Case-Control Studies</topic><topic>Colchicine</topic><topic>Colchicine - therapeutic use</topic><topic>Extracellular Traps - immunology</topic><topic>Female</topic><topic>human</topic><topic>Humans</topic><topic>Intracellular</topic><topic>Leukocytes (neutrophilic)</topic><topic>Male</topic><topic>Middle Aged</topic><topic>Mucosa</topic><topic>Neutrophils</topic><topic>Neutrophils - immunology</topic><topic>Original</topic><topic>ORIGINAL ARTICLES</topic><topic>Oxidants</topic><topic>Oxidation</topic><topic>Oxidative Stress - drug effects</topic><topic>Pathogenesis</topic><topic>Patients</topic><topic>Reactive oxygen species</topic><topic>Reactive Oxygen Species - blood</topic><topic>Retrospective Studies</topic><topic>Systemic vasculitis</topic><topic>vasculitis</topic><topic>Vein &amp; 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Neutrophil hyperactivation mediates vascular BS pathogenesis, via both a massive reactive oxygen species (ROS) production and neutrophil extracellular traps (NETs) release. Here, we investigated neutrophil‐mediated mechanisms of damage in non‐vascular BS manifestations and explored the in‐vitro effects of colchicine in counteracting these mechanisms. NETs and intracellular ROS production was assessed in blood samples from 80 BS patients (46 with active non‐vascular BS, 34 with inactive disease) and 80 healthy controls. Moreover, isolated neutrophils were incubated for 1 h with an oxidating agent [2,2′‐azobis (2‐amidinopropane) dihydrochloride; 250 nM] and the ability of pure colchicine pretreatment (100 ng/ml) to counteract oxidation‐induced damage was assessed. Patients with active non‐vascular BS showed remarkably increased NET levels [21.2, interquartile range (IQR) = 18.3–25.9 mU/ml] compared to patients with inactive disease (16.8, IQR = 13.3–20.2 mU/ml) and to controls (7.1, IQR = 5.1–8.7 mU/ml, p &lt; 0.001]. Also, intracellular ROS tended to increase in active BS, although not significantly. In active non‐vascular BS, NETs correlated with neutrophil ROS production (p &lt; 0.001) and were particularly increased in patients with active mucosal (p &lt; 0.001), articular (p = 0.004) and gastrointestinal symptoms (p = 0.006). In isolated neutrophils, colchicine significantly reduced oxidation‐induced NET production and cell apoptosis, although not via an anti‐oxidant activity. Neutrophil‐mediated mechanisms might be directly involved in non‐vascular BS, and NETs, more than ROS, might drive the pathogenesis of mucosal, articular and intestinal manifestations. Colchicine might be effective in counteracting neutrophils‐mediated damage in BS, although further studies are needed. Neutrophil‐mediated mechanisms of damage might be directly involved in non‐vascular Behçet's syndrome. Neutrophil extracellular traps (NETs), more than an impaired redox status, might play a central role in the pathogenesis of mucosal, articular and intestinal BS manifestations. Colchicine might be effective to counteract neutrophils‐mediated damage in Behçet's syndrome, via the inhibition of NETs release.</abstract><cop>England</cop><pub>Oxford University Press</pub><pmid>34562315</pmid><doi>10.1111/cei.13664</doi><tpages>12</tpages><oa>free_for_read</oa></addata></record>
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subjects Adult
Anti-Inflammatory Agents - therapeutic use
Antioxidants - therapeutic use
Apoptosis
autoimmunity
Behcet Syndrome - drug therapy
Behcet Syndrome - pathology
Behcet's syndrome
Case-Control Studies
Colchicine
Colchicine - therapeutic use
Extracellular Traps - immunology
Female
human
Humans
Intracellular
Leukocytes (neutrophilic)
Male
Middle Aged
Mucosa
Neutrophils
Neutrophils - immunology
Original
ORIGINAL ARTICLES
Oxidants
Oxidation
Oxidative Stress - drug effects
Pathogenesis
Patients
Reactive oxygen species
Reactive Oxygen Species - blood
Retrospective Studies
Systemic vasculitis
vasculitis
Vein & artery diseases
title Neutrophil‐mediated mechanisms of damage and in‐vitro protective effect of colchicine in non‐vascular Behçet’s syndrome
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