TY - GEN
T1 - Ankylosing Spondylitis Susceptibility and Severity-Contribution of TNF Gene Promoter Polymorphisms at Positions-238 and-308
AU - Sousa, Elsa
AU - Caetano-Lopes, Joana
AU - Pinto, Patricia
AU - Pimentel, Fernando
AU - Teles, José
AU - Canhao, Helena
AU - Rodrigues, Ana
AU - Resende, Catarina
AU - Mourao, Ana Filipa
AU - Ribeiro, Celia
AU - Pinto, Teresa Laura
AU - Rosa, Carlos Miranda
AU - Pereira da Silva, Jose Alberto
AU - Branco, Jaime
AU - Ventura, Francisco
AU - Queiroz, Mario Viana
AU - Fonseca, Joao Eurico
PY - 2009
Y1 - 2009
N2 - Ankylosing spondylitis (AS) is a chronic inflammatory disease in which genetic factors play a central role. The efficacy of TNF blockers has reoriented research in this field in order to explain the influence of TNF in AS pathogenesis. The objective of this study was to access the influence of single nucleotide polymorphisms (SNPs) at positions -308 and -238 of the promoter region of TNF gene on AS susceptibility and prognosis. SNPS were determined by restriction fragment length polymorphisms in patients and controls. AS patients exhibited a decreased frequency of the A allele at position -238 (10%) when compared with controls (18%), suggesting that this could be a protective factor for disease susceptibility. In addition, the -308 GA/AA genotypes were associated with later disease onset in AS patients. These results suggest that TNF gene promoter polymorphisms at positions -238 and -308 could have a small influence on AS susceptibility and prognosis.
AB - Ankylosing spondylitis (AS) is a chronic inflammatory disease in which genetic factors play a central role. The efficacy of TNF blockers has reoriented research in this field in order to explain the influence of TNF in AS pathogenesis. The objective of this study was to access the influence of single nucleotide polymorphisms (SNPs) at positions -308 and -238 of the promoter region of TNF gene on AS susceptibility and prognosis. SNPS were determined by restriction fragment length polymorphisms in patients and controls. AS patients exhibited a decreased frequency of the A allele at position -238 (10%) when compared with controls (18%), suggesting that this could be a protective factor for disease susceptibility. In addition, the -308 GA/AA genotypes were associated with later disease onset in AS patients. These results suggest that TNF gene promoter polymorphisms at positions -238 and -308 could have a small influence on AS susceptibility and prognosis.
KW - susceptibility
KW - ankylosing spondylitis
KW - TNF promoter polymorphisms
KW - prognosis
U2 - 10.1111/j.1749-6632.2009.04758.x
DO - 10.1111/j.1749-6632.2009.04758.x
M3 - Paper in conference proceeding
C2 - 19758203
VL - 1173
SP - 581
EP - 588
BT - Contemporary Challenges in Autoimmunity
PB - Wiley-Blackwell
T2 - 6th International Congress on Autoimmunity
Y2 - 10 September 2008 through 14 September 2008
ER -