TY - JOUR
T1 - The 30-kDa band from Salmonella typhimurium
T2 - IgM, IgA and IgG antibody response in patients with ankylosing spondylitis
AU - Zambrano-Zaragoza, Jose F.
AU - De Jesus, Durán Avelar Ma
AU - Rodríguez-Ocampo, Angelica N.
AU - García-Latorre, Ethel
AU - Burgos-Vargas, Ruben
AU - Dominguez-Lopez, Maria L.
AU - Pena-Virgen, Salvador
AU - Vibanco-Pérez, Norberto
PY - 2009
Y1 - 2009
N2 - Objective. To determine the association of Salmonella typhimurium antigens with AS by analysing the IgA, IgG and IgM antibody response to the crude lysate and the 30-kDa band from this micro-organism. Methods. Sera from 28 AS patients, 28 HLA-B27+ healthy relatives, 28 unrelated healthy subjects and 14 RA patients were included. Salmonella typhimurium proteins were electrophoretically separated and blotted onto nitrocellulose sheets for immunodetection with sera from AS patients and unrelated healthy subjects. The electroeluted 30-kDa band (p30) and a crude lysat (StCL) from S. typhimurium were used as antigen to evaluate the IgM, IgA and IgG (total and subclasses) antibody levels by ELISA. An inhibition assay was carried out to confirm the specificity of IgG response to the p30. Results. Twenty out of 28 AS patients (71.4%) and 4 out of 28 unrelated healthy subjects (14.3%) recognized a 30-kDa band from S. typhimurium with IgG antibodies. Six out of 28 AS patients (21.4%) and 4 out of 28 unrelated healthy subjects (14.3%) detected it with IgA antibodies. Recognition of p30 and StCL by both IgA and IgG antibodies was higher in AS patients than in control groups (P < 0.003, <0.001 and 0.003 for IgA and <0.001, 0.003 and 0.006 for IgG). Sera from AS patients have higher percentage of IgG antibodies p30 and IgG3 subclass was higher in AS patients than in control groups. No differences in the IgM response were found. Conclusions. Data presented suggest the association between the p30 and AS.
AB - Objective. To determine the association of Salmonella typhimurium antigens with AS by analysing the IgA, IgG and IgM antibody response to the crude lysate and the 30-kDa band from this micro-organism. Methods. Sera from 28 AS patients, 28 HLA-B27+ healthy relatives, 28 unrelated healthy subjects and 14 RA patients were included. Salmonella typhimurium proteins were electrophoretically separated and blotted onto nitrocellulose sheets for immunodetection with sera from AS patients and unrelated healthy subjects. The electroeluted 30-kDa band (p30) and a crude lysat (StCL) from S. typhimurium were used as antigen to evaluate the IgM, IgA and IgG (total and subclasses) antibody levels by ELISA. An inhibition assay was carried out to confirm the specificity of IgG response to the p30. Results. Twenty out of 28 AS patients (71.4%) and 4 out of 28 unrelated healthy subjects (14.3%) recognized a 30-kDa band from S. typhimurium with IgG antibodies. Six out of 28 AS patients (21.4%) and 4 out of 28 unrelated healthy subjects (14.3%) detected it with IgA antibodies. Recognition of p30 and StCL by both IgA and IgG antibodies was higher in AS patients than in control groups (P < 0.003, <0.001 and 0.003 for IgA and <0.001, 0.003 and 0.006 for IgG). Sera from AS patients have higher percentage of IgG antibodies p30 and IgG3 subclass was higher in AS patients than in control groups. No differences in the IgM response were found. Conclusions. Data presented suggest the association between the p30 and AS.
KW - Ankylosing spondylitis
KW - Antibody levels
KW - Autoimmunity
KW - Salmonella typhimurium
UR - http://www.scopus.com/inward/record.url?scp=67650067182&partnerID=8YFLogxK
U2 - 10.1093/rheumatology/kep113
DO - 10.1093/rheumatology/kep113
M3 - Artículo
C2 - 19454607
SN - 1462-0324
VL - 48
SP - 748
EP - 754
JO - Rheumatology
JF - Rheumatology
IS - 7
ER -