Abstract:
:To evaluate the role of tumor necrosis factor-alpha (TNF-alpha) gene as susceptibility marker for spondyloarthritis (SpA), two polymorphisms (-238 and -308 positions) were analyzed in 229 patients with SpA (113 with ankylosing spondylitis [AS], 92 with undifferentiated SpA [U-SpA], 24 with reactive arthritis), and 169 ethnically matched healthy control subjects. The HLA-B alleles were detected by PCR-SSP technique and the TNF-alpha polymorphism by PCR-RFLP. In comparison with healthy control subjects, the frequencies of TNF-238 in SpA were similar. In contrast, the analysis of -308 polymorphism showed increased frequencies of the T2(A) allele in the whole SpA group (p < 0.05, pC = NS, OR = 1.83) as well as the T2(A) allele (pC < 0.05, OR = 2.4) and T1T2(AG) genotype (p < 0.05, pC = NS, OR = 2.25) in U-SpA patients. Comparison of B27-negative patients and healthy control subjects yielded similar results. There was no significant correlation between TNF genotypes and clinical data. The present study demonstrates that TNF-alpha -308 polymorphism appears to be associated with the genetic susceptibility U-SpA. The association seems independent of the susceptibility conferred by the HLA-B27 in this group of patients.
journal_name
Hum Immunoljournal_title
Human immunologyauthors
Vargas-Alarcón G,Casasola-Vargas J,Rodríguez-Pérez JM,Huerta-Sil G,Pérez-Hernández N,Londoño J,Pacheco-Tena C,Cardiel MH,Granados J,Burgos-Vargas Rdoi
10.1016/j.humimm.2006.07.009subject
Has Abstractpub_date
2006-10-01 00:00:00pages
826-32issue
10eissn
0198-8859issn
1879-1166pii
S0198-8859(06)00184-4journal_volume
67pub_type
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