Predictive value of interleukin 1 gene polymorphisms for surgery

被引:13
作者
Crilly, A
Maiden, N
Capell, HA
Madhok, R
机构
[1] Glasgow Royal Infirm, Ctr Rheumat Dis, Glasgow G4 0SF, Lanark, Scotland
[2] Univ Glasgow, Glasgow Royal Infirm, Dept Med, Glasgow G31 2ER, Lanark, Scotland
关键词
D O I
10.1136/ard.59.9.695
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Objectives-To determine the influence of interleukin 1 alpha (IL1 alpha), IL1 beta, and IL1 receptor antagonist gene polymorphisms on disease outcome as assessed by the need for major joint surgery within 15 years of diagnosis. Patients and methods-50 patients with rheumatoid arthritis (RA) who required major joint surgery (hip, knee, or shoulder arthroplasty) within a 15 year period of disease diagnosis and 50 patients with RA with disease duration greater than 15 years and no major surgery were recruited together with 66 normal west of Scotland controls. Genomic DNA and polymerase chain reaction were used to determine polymorphisms in the genes for IL1 alpha, IL1 beta, and IL1 receptor antagonist. For all patients with RA recruited to the study, HLA-DR beta 1 gene status was recorded as was the erythrocyte sedimentation rate (ESR) at the first ever clinic visit. Results-No difference in the allele frequencies or genotypes of the IL1 alpha and IL1 receptor antagonist gene polymorphisms was found between the controls and patients with RA, with or without previous surgery. IL1 beta allele 2 was overrepresented in patients with RA who had undergone surgery compared with patients who had not (40% upsilon 27%, chi(2)=4, Idf, p=0.04). ESR at the first ever clinic visit was significantly higher in those carrying allele 2 (36 mm/1st h upsilon 22 mm/1st h, p=0.04). When patients, with or without previous surgery, who did not carry two disease associated HLA-DR pi alleles were compared, an increase in allele 2 was observed in the surgery cohort (42% v 25%, chi(2)=4.8, Idf, p=0.03) Conclusions-Patients who require major joint surgery were found to carry the IL1 beta allele 2 more often than expected. Patients with this allele also had a higher initial ESR. This may be useful in predicting early surgery in patients who do not carry two disease associated HLA-DR pi alleles. Although these findings are interesting, further functional and epidemiological studies to confirm these observations are required.
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页码:695 / 699
页数:5
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