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- Title
Significance of interleukin-31 (IL-31) gene polymorphisms and IL-31 serum level in psoriasis in correlation with pruritus.
- Authors
Purzycka-Bohdan, Dorota; Gleń, Jolanta; Zabłotna, Monika; Nedoszytko, Bogusław; Szczerkowska-Dobosz, Aneta; Sokołowska-Wojdyło, Małgorzata; Rębała, Krzysztof; Nowicki, Roman J.
- Abstract
Introduction: Interleukin-31 (IL-31) impact on the development and clinical presentation of psoriasis as well as pruritus has not been widely investigated so far. Aim: To analyse IL-31 -1066G/A and -2057G/A promoter gene polymorphisms as well as serum IL-31 level and their correlation with severity of psoriasis and pruritus in the population of northern Poland. Material and methods: The study included 300 psoriasis patients and 186 healthy volunteers. The polymorphisms were analysed using amplified refractory mutation system -- polymerase chain reaction (ARMS-PCR) method. Serum levels of IL-31 were measured using the enzyme-linked immunosorbent assay (ELISA) test. Results: The -1066 AA genotype of the IL-31 gene was statistically more frequent in patients and it increased the risk of psoriasis (OR = 1.80; p = 0.04). The GG genotype as well as G allele of the IL-31 -2057 gene polymorphism were rarely observed in psoriasis and were associated with a decreased risk of the disease (OR = 0.6, p = 0.007 and OR = 0.7, p = 0.01, respectively). Serum levels of IL-31 were significantly elevated in psoriasis patients (p < 0.000001), however, they did not correlate with the studied polymorphic variants of the IL-31 gene, severity of psoriasis, disease onset, presence of psoriatic arthritis and pruritus intensity. Conclusions: Distinct IL-31 promoter gene polymorphisms may be involved in psoriasis development. It seems that serum concentration of IL-31 may not be a reliable marker of psoriatic pruritus.
- Subjects
INTERLEUKINS; PSORIASIS; GENETIC polymorphisms; ITCHING; POLYMERASE chain reaction
- Publication
Advances in Dermatology & Allergology / Postępy Dermatologii i Alergologii, 2021, Vol 38, Issue 4, p657
- ISSN
1642-395X
- Publication type
Article
- DOI
10.5114/ada.2021.108926