Open AccessThe IL‐1Ra gene variable number tandem repeat variant is associated with susceptibility to temporomandibular disorders in Turkish population
Author(s) -
Tumer Mehmet Kemal,
Nursal Ayse Feyda,
Tekcan Akin,
Yerliyurt Kaan,
Geyko Anastasia,
Yigit Serbulent
Publication year - 2018
Publication title -
journal of clinical laboratory analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.536
H-Index - 50
eISSN - 1098-2825
pISSN - 0887-8013
DOI - 10.1002/jcla.22255
Subject(s) - turkish population , variable number tandem repeat , genotype , genotyping , allele , genetics , population , medicine , gastroenterology , biology , gene , environmental health
Background Temporomandibular joint disorders ( TMD ) are a group of disorders involving temporomandibular joint and related structures. Interleukine‐1 receptor antagonist ( IL ‐1Ra) is an important anti‐inflammatory molecule that competes with other interleukin‐1 molecules. This study was designed to investigate the possible association of the IL ‐1Ra VNTR variant with the risk of TMD in the Turkish population. Methods Peripheral blood samples were collected from 100 patients with TMD (23 males, 77 females) and 110 healthy individuals (35 males, 75 females). Genotyping of IL ‐1Ra 86 bp VNTR variant was evaluated by gel electrophoresis after polymerase chain reaction ( PCR ). Results Our results show that there is a statistically significant difference between TMD patients and control group with respect to IL ‐1Ra genotype distribution and allele frequencies. 1.2, 1.4, and 4.4 genotypes were more common in patients, while 2.2 and 3.3 genotypes were rarer ( P <.000). Frequency of alleles 1 and 4 was higher in patient groups ( P <.000), whereas alleles 2 and 3 had a lower frequency in patients with TMD ( P <.000). Conclusions This is the first correlation study that evaluates the association between IL ‐1Ra gene VNTR variant and TMD . The VNTR variant related to IL ‐1Ra gene showed a strong pattern of association with TMD that may have a potential impact on disease counseling and management. Larger studies with various ethnicities are needed to establish the impact of IL ‐1Ra VNTR variant on risk of developing TMD .