IL-1RN VNTR Polymorphism in Adult Dermatomyositis and Systemic Lupus Erythematosus

Polymorphisms in the cytokine genes and their natural antagonists are thought to influence the predisposition to dermatomyositis (DM) and systemic lupus erythematosus (SLE). A variable number tandem repeat (VNTR) polymorphism of 86 bp in intron 2 of the interleukin-1 receptor antagonist (IL-1RN) gen...

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Main Authors: Zornitsa Kamenarska, Gyulnas Dzhebir, Maria Hristova, Alexey Savov, Anton Vinkov, Radka Kaneva, Vanio Mitev, Lyubomir Dourmishev
Format: Article
Language:English
Published: Wiley 2014-01-01
Series:Dermatology Research and Practice
Online Access:http://dx.doi.org/10.1155/2014/953597
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author Zornitsa Kamenarska
Gyulnas Dzhebir
Maria Hristova
Alexey Savov
Anton Vinkov
Radka Kaneva
Vanio Mitev
Lyubomir Dourmishev
author_facet Zornitsa Kamenarska
Gyulnas Dzhebir
Maria Hristova
Alexey Savov
Anton Vinkov
Radka Kaneva
Vanio Mitev
Lyubomir Dourmishev
author_sort Zornitsa Kamenarska
collection DOAJ
description Polymorphisms in the cytokine genes and their natural antagonists are thought to influence the predisposition to dermatomyositis (DM) and systemic lupus erythematosus (SLE). A variable number tandem repeat (VNTR) polymorphism of 86 bp in intron 2 of the interleukin-1 receptor antagonist (IL-1RN) gene leads to the existence of five different alleles which cause differences in the production of both IL-1RA (interleukin-1 receptor antagonist) and IL-1β. The aim of this case-control study was to investigate the association between the IL-1RN VNTR polymorphism and the susceptibility to DM and SLE in Bulgarian patients. Altogether 91 patients, 55 with SLE and 36 with DM, as well as 112 unrelated healthy controls, were included in this study. Only three alleles were identified in both patients and controls ((1) four repeats, (2) two repeats, and (3) five repeats). The IL-1RN*2 allele (P=0.02, OR 2.5, and 95% CI 1.2–5.4) and the 1/2+2/2 genotypes were found prevalent among the SLE patients (P=0.05, OR 2.6, and 95% CI 1–6.3). No association was found between this polymorphism and the ACR criteria for SLE as well as with the susceptibility to DM. Our results indicate that the IL-1RN VNTR polymorphism might play a role in the susceptibility of SLE but not DM.
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spelling doaj-art-33fb957b99c04e59906a5c173f84786d2025-02-03T05:46:10ZengWileyDermatology Research and Practice1687-61051687-61132014-01-01201410.1155/2014/953597953597IL-1RN VNTR Polymorphism in Adult Dermatomyositis and Systemic Lupus ErythematosusZornitsa Kamenarska0Gyulnas Dzhebir1Maria Hristova2Alexey Savov3Anton Vinkov4Radka Kaneva5Vanio Mitev6Lyubomir Dourmishev7Molecular Medicine Center and Department of Medical Chemistry and Biochemistry, Medical University-Sofia, 2 Zdrave Street, 1431 Sofia, BulgariaMolecular Medicine Center and Department of Medical Chemistry and Biochemistry, Medical University-Sofia, 2 Zdrave Street, 1431 Sofia, BulgariaDepartment of Clinical Laboratory and Clinical Immunology and Department of Nephrology, Medical University-Sofia, 1 Georgi Sofijski Street, 1431 Sofia, BulgariaNational Genetic Laboratory, Maichin Dom Hospital, 2 Zdrave Street, 1431 Sofia, Bulgaria28 Diagnostic and Consultative Center-Sofia, 1 Iliya Beshkov Street, 1592 Sofia, BulgariaMolecular Medicine Center and Department of Medical Chemistry and Biochemistry, Medical University-Sofia, 2 Zdrave Street, 1431 Sofia, BulgariaMolecular Medicine Center and Department of Medical Chemistry and Biochemistry, Medical University-Sofia, 2 Zdrave Street, 1431 Sofia, BulgariaDepartment of Dermatology and Venereology, Medical University-Sofia, 1 Georgi Sofijski Street, 1431 Sofia, BulgariaPolymorphisms in the cytokine genes and their natural antagonists are thought to influence the predisposition to dermatomyositis (DM) and systemic lupus erythematosus (SLE). A variable number tandem repeat (VNTR) polymorphism of 86 bp in intron 2 of the interleukin-1 receptor antagonist (IL-1RN) gene leads to the existence of five different alleles which cause differences in the production of both IL-1RA (interleukin-1 receptor antagonist) and IL-1β. The aim of this case-control study was to investigate the association between the IL-1RN VNTR polymorphism and the susceptibility to DM and SLE in Bulgarian patients. Altogether 91 patients, 55 with SLE and 36 with DM, as well as 112 unrelated healthy controls, were included in this study. Only three alleles were identified in both patients and controls ((1) four repeats, (2) two repeats, and (3) five repeats). The IL-1RN*2 allele (P=0.02, OR 2.5, and 95% CI 1.2–5.4) and the 1/2+2/2 genotypes were found prevalent among the SLE patients (P=0.05, OR 2.6, and 95% CI 1–6.3). No association was found between this polymorphism and the ACR criteria for SLE as well as with the susceptibility to DM. Our results indicate that the IL-1RN VNTR polymorphism might play a role in the susceptibility of SLE but not DM.http://dx.doi.org/10.1155/2014/953597
spellingShingle Zornitsa Kamenarska
Gyulnas Dzhebir
Maria Hristova
Alexey Savov
Anton Vinkov
Radka Kaneva
Vanio Mitev
Lyubomir Dourmishev
IL-1RN VNTR Polymorphism in Adult Dermatomyositis and Systemic Lupus Erythematosus
Dermatology Research and Practice
title IL-1RN VNTR Polymorphism in Adult Dermatomyositis and Systemic Lupus Erythematosus
title_full IL-1RN VNTR Polymorphism in Adult Dermatomyositis and Systemic Lupus Erythematosus
title_fullStr IL-1RN VNTR Polymorphism in Adult Dermatomyositis and Systemic Lupus Erythematosus
title_full_unstemmed IL-1RN VNTR Polymorphism in Adult Dermatomyositis and Systemic Lupus Erythematosus
title_short IL-1RN VNTR Polymorphism in Adult Dermatomyositis and Systemic Lupus Erythematosus
title_sort il 1rn vntr polymorphism in adult dermatomyositis and systemic lupus erythematosus
url http://dx.doi.org/10.1155/2014/953597
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