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Published in: Archives of Dermatological Research 2/2023

01-07-2022 | Pityriasis Lichenoides Chronica | Original Paper

The role of NLRP1 and NLRP3 inflammasomes in the etiopathogeneses of pityriasis lichenoides chronica and mycosis fungoides: an immunohistochemical study

Authors: Ecem Bostan, Ozay Gokoz, Nilgun Atakan

Published in: Archives of Dermatological Research | Issue 2/2023

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Abstract

Mycosis fungoides (MF) is the most common subtype of primary cutaneous T cell lymphomas, whereas pityriasis lichenoides chronica (PLC) is a chronic inflammatory skin disorder. The inflammasome is a part of the natural immune system which has a multimeric structure consisting of the receptor, adaptor and effector protein that show specificity for various ligands or activators. After the activation of the inflammasome complex, caspase 1 becomes activated which subsequently triggers interleukin-18 (IL-18) and interleukin-1β (IL-1β) production. In our study we aimed to examine the roles of nucleotide-binding oligomerization domain-like receptor containing pyrin domain 1 (NLRP1) and nucleotide-binding oligomerization domain-like receptor containing pyrin domain (NLRP3) inflammasomes in the etiopathogeneses of PLC and MF. NLRP1, NLRP3, caspase 1, IL-18 and IL-1β levels were examined and compared immunohistochemically in the skin biopsies belonging to 16 control patients; 16 PLC cases, 12 cases with stage 1 MF and 12 cases with other stages of MF (stage 2–4). In the paired comparisons of NLRP1, stage 2–4 MF group and PLC group were shown to have increased levels of NLRP1 expression compared to the control group. IL-1β was also expressed at statistically significantly higher levels in each of the stage 1 MF, stage 2–4 MF and PLC groups compared to the control group. In the paired comparisons of caspase 1 and IL-18, it was found that stage 1 MF, stage 2–4 MF and PLC groups had increased levels of expression compared to the control group. Our findings suggest that the NLRP1 inflammasome pathway might play a role in the etiopathogenesis and progression of PLC and MF.
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Metadata
Title
The role of NLRP1 and NLRP3 inflammasomes in the etiopathogeneses of pityriasis lichenoides chronica and mycosis fungoides: an immunohistochemical study
Authors
Ecem Bostan
Ozay Gokoz
Nilgun Atakan
Publication date
01-07-2022
Publisher
Springer Berlin Heidelberg
Published in
Archives of Dermatological Research / Issue 2/2023
Print ISSN: 0340-3696
Electronic ISSN: 1432-069X
DOI
https://doi.org/10.1007/s00403-022-02363-x

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