Abstract:
:Chronic rhinosinusitis is an inflammatory process of the mucous membrane of the nasal cavity and paranasal sinuses, presenting with two phenotypes that differ in symptoms and inflammatory profiles: either with or without polyps. Natural killer (NK) cells are involved in both the innate and acquired immune response, and their function may be limited under pathological conditions, leading to polyp formation. We determined NK cell involvement and maturity in chronic rhinosinusitis, by determining the percentage of NK cells in polyps, nasal mucosa, and in the peripheral blood. Material was obtained from 49 patients with chronic rhinosinusitis (36 with polyps, 13 without polyps), and 15 control patients. Flow cytometry was used to immunophenotype NK cells, and the expression of selected functional receptors was evaluated. NK cells were found to be increased in polyp tissue versus peripheral blood and nasal mucosa. NK cell maturation differed significantly with predominance of a cytotoxic phenotype (CD11b+/27-) in peripheral blood, compared with a regulatory/tolerogenic phenotype (CD11+/-/ 27+) in tissue material. These findings demonstrate the involvement of NK cells in the inflammatory process of chronic rhinosinusitis. Decreased expression of activating receptors in the analyzed groups may also indicate the presence of modifying agents. Disorders of the maturation process of NK cells may be an important element in the etiopathogenesis of chronic rhinosinusitis with and without polyps.
journal_name
Immunobiologyjournal_title
Immunobiologyauthors
Kaczmarek M,Wasicka K,Tin-Tsen Chou J,Popowicz P,Rzetelska Z,Łagiedo-Żelazowska M,Piwowarczyk K,Leszczyńska Mdoi
10.1016/j.imbio.2019.11.025subject
Has Abstractpub_date
2020-03-01 00:00:00pages
151890issue
2eissn
0171-2985issn
1878-3279pii
S0171-2985(19)30334-1journal_volume
225pub_type
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