Journal
CYTOKINE
Volume 28, Issue 1, Pages 29-34Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.cyto.2004.06.005
Keywords
C-reactive protein; inflammation; interleukin-6; periodontitis; polymorphisms
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The inflammatory response to chronic infections such as periodontitis may be central to the systemic implications of these diseases. This study examined the possible association between specific gene polymorphisms and the systemic inflammatory response in individuals suffering from severe generalized periodontitis. Ninety-four subjects with periodontitis were genotyped for polymorphisms in IL-1A (-889), IL-1B (-511, +3954), TNF-A (-308), IL-6 (-174) and TLR4 (-299, -399) genes. We found that the genotypes for IL-1A or IL-6 are associated with higher levels of serum IL-6 (P < 0.03) and serum CRP (P < 0.05), similarly the TNF-A genotype is associated with higher levels of serum IL-6 (P < 0.05) after correction for age, body mass index, gender, ethnicity and cigarette smoking. Systemic inflammatory responses are higher in severe periodontitis patients carrying rare alleles for functional inflammatory gene polymorphisms. These results suggest that cytokine genotypes are important determinants of the systemic inflammatory response in subjects with periodontitis. Genetic polymorphism, therefore, may in part explain the reported association between periodontitis and systemic disease. (C) 2004 Elsevier Ltd. All rights reserved.
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