Cytokines and Inflammatory Mediators [30-39] : 30. The LPS Stimulated Production of Interleukin-10 is not Associated with -819C/T and -592C/A Promoter Polymorphisms in Healthy Indian Subjects

Shukla, Skanda ; Lawrence, Able ; Aggarwal, Amita ; Naik, Sita ; Gullick, Nicola J. ; Evans, Hayley G. ; Jayaraj, David ; Kirkham, Bruce W. ; Taams, Leonie S. ; Judah, Sunita M. ; Nixon, Nicola ; Dawes, Peter ; Mattey, Derek L. ; Yeo, Lorraine ; Schmutz, Caroline ; Toellner, Kai-Michael ; Salmon, Mike ; Filer, Andrew D. ; Buckley, Christopher ; Raza, Karim ; Scheel-Toellner, Dagmar ; Hashizume, M. ; Yoshida, H. ; Koike, N. ; Suzuki, M. ; Mihara, M. ; Stavropoulos-Kalinoglou, Antonios ; Metsios, Giorgos S. ; Douglas, Karen M. ; Panoulas, Vasileios F. ; Koutedakis, Yiannis ; Kitas, George D. ; Church, Leigh D. ; Filer, Andrew D. ; Hildago, Ester ; Howlett, Katherine ; Thomas, Andrew ; Rapecki, Stephen ; Scheel-Toellner, Dagmar ; Buckley, Christopher D. ; Raza, Karim ; Juarez, Maria ; Kolasinski, James ; Govindan, Jyothish ; Quilter, Annette ; Williamson, Lyn ; Collins, David A. ; Price, Elizabeth J. ; Gasparyan, Armen Y. ; Stavropoulos-Kalinoglou, Antonios ; Toms, Tracey E. ; Douglas, Karen ; Kitas, George D. ; Lachmann, H. J. ; Kuemmerle-Deschner, J. B. ; Hachulla, E. ; Hoyer, J. ; Smith, J. ; Leslie, K. ; Kone-Paut, I. ; Braun, J. ; Widmer, A. ; Patel, N. ; Preiss, R. ; Hawkins, P. N.

In: Rheumatology, 2010, vol. 49, p. i45-i48

Ajouter à la liste personnelle
    Summary
    Background: Interleukin-10 is a pivotal immunoregulatory cytokine with pleiotropic effects on the immune system. IL-10 promoter polymorphisms have been associated with disease susceptibility and the ability to secrete IL-10 in vitro. We suspected that the association of the widely studied -819C/T and -592C/A polymorphisms with the IL-10 production might vary between ethnic groups. Therefore, we examined the association of -819 C/T and -592 C/A promoter polymorphisms with in vitro LPS stimulated secretion of IL-10 in normal healthy Indian volunteers. Methods: Peripheral blood was collected from 103 healthy volunteers and diluted whole blood cultures were set up with 100 ng/ml of LPS as stimulant: supernatant was collected at 24 h and IL-10 levels were assayed by ELISA. Genotyping was done for -819C/T polymorphism in 101 individuals and -592C/A polymorphism in 68 individuals by polymerase chain reaction followed by RFLP. The differences in IL-10 production between the genotypes were analysed by ANOVA. Results: There were 30, 47 and 24 individuals with the CC, CT and TT genotypes with a minor allele (T) frequency of 47% for the -819C/T polymorphism. The CC and TT genotypes at position -819 were strongly associated with CC and AA genotypes at -592 position suggestive of strong linkage disequilibrium. There was no association between the -819 genotype and the in vitro LPS stimulated IL-10 levels. Conclusions: The -819C/T and the -592 C/A polymorphisms of the IL-10 promoter region are not significantly associated with LPS stimulated IL-10 production healthy Indian subjects. Disclosure statement: All authors have declared no conflicts of interest