Nontuberculous mycobacteria are the most frequent cause of chronic cervical lymphadenitis in childhood. The aim of the study was to evaluate the performance of IL-2, IL-17, and INF-γ in-house enzyme-linked immunospot assays using a Mycobacterium avium lysate, in order to identify a noninvasive diagnostic method of nontuberculous mycobacteria infection. Children with subacute and chronic lymphadenopathies or with a previous diagnosis of nontuberculous mycobacteria lymphadenitis were prospectively enrolled in the study. Sixty children with lymphadenitis were included in our study: 16 with confirmed infection (group 1), 30 probable infected (group 2) and 14 uninfected (group 3). Significantly higher median cytokine values were found in group 1 vs group 2, in group 1 vs group 3, and in group 2 vs group 3 considering IL-2-based enzyme-linked immunospot assay (p = 0.015, p < 0.001, p = 0.004, respectively). INF-γ-based enzyme-linked immunospot assay results were significantly higher in group 2 vs group 3 (p = 0.010). Differences between infected and uninfected children were not significant considering IL-17 assays (p = 0.431). Mycobacterium avium lysate IL-2 and INF-γ-based enzyme-linked immunospot assays seem to be promising noninvasive diagnostic techniques for discriminating children with nontuberculous mycobacteria lymphadenitis and noninfected subjects.

Role of Mycobacterium avium lysate INF-γ, IL-17, and IL-2 ELISPOT assays in diagnosing nontuberculous mycobacteria lymphadenitis in children / Della Bella, Chiara; Venturini, Elisabetta; Devente, Savannah; Piccini, Paola; Tapinassi, Simona; Bianchi, Leila; Grassi, Alessia; Benagiano, Marisa; Alnwaisri, Heba F Mustafa; Montagnani, Carlotta; Chiappini, Elena; Bitter, Wilbert; D'Elios, Mario M; de Martino, Maurizio; Galli, Luisa. - In: EUROPEAN JOURNAL OF CLINICAL MICROBIOLOGY & INFECTIOUS DISEASES. - ISSN 1435-4373. - STAMPA. - 38:(2019), pp. 1113-1122. [10.1007/s10096-019-03506-1]

Role of Mycobacterium avium lysate INF-γ, IL-17, and IL-2 ELISPOT assays in diagnosing nontuberculous mycobacteria lymphadenitis in children

Della Bella, Chiara;Venturini, Elisabetta;Piccini, Paola;Tapinassi, Simona;Bianchi, Leila;Grassi, Alessia;Benagiano, Marisa;Alnwaisri, Heba F Mustafa;Montagnani, Carlotta;Chiappini, Elena;D'Elios, Mario M;de Martino, Maurizio;Galli, Luisa
2019

Abstract

Nontuberculous mycobacteria are the most frequent cause of chronic cervical lymphadenitis in childhood. The aim of the study was to evaluate the performance of IL-2, IL-17, and INF-γ in-house enzyme-linked immunospot assays using a Mycobacterium avium lysate, in order to identify a noninvasive diagnostic method of nontuberculous mycobacteria infection. Children with subacute and chronic lymphadenopathies or with a previous diagnosis of nontuberculous mycobacteria lymphadenitis were prospectively enrolled in the study. Sixty children with lymphadenitis were included in our study: 16 with confirmed infection (group 1), 30 probable infected (group 2) and 14 uninfected (group 3). Significantly higher median cytokine values were found in group 1 vs group 2, in group 1 vs group 3, and in group 2 vs group 3 considering IL-2-based enzyme-linked immunospot assay (p = 0.015, p < 0.001, p = 0.004, respectively). INF-γ-based enzyme-linked immunospot assay results were significantly higher in group 2 vs group 3 (p = 0.010). Differences between infected and uninfected children were not significant considering IL-17 assays (p = 0.431). Mycobacterium avium lysate IL-2 and INF-γ-based enzyme-linked immunospot assays seem to be promising noninvasive diagnostic techniques for discriminating children with nontuberculous mycobacteria lymphadenitis and noninfected subjects.
2019
38
1113
1122
Della Bella, Chiara; Venturini, Elisabetta; Devente, Savannah; Piccini, Paola; Tapinassi, Simona; Bianchi, Leila; Grassi, Alessia; Benagiano, Marisa; Alnwaisri, Heba F Mustafa; Montagnani, Carlotta; Chiappini, Elena; Bitter, Wilbert; D'Elios, Mario M; de Martino, Maurizio; Galli, Luisa
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1173245
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