We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
An association study of asthma and related phenotypes with polymorphisms in negative regulator molecules of the TLR signaling pathway.
- Authors
Nakashima, Kazuko; Hirota, Tomomitsu; Obara, Kazuhiko; Shimizu, Makiko; Jodo, Aya; Kameda, Makoto; Doi, Satoru; Fujita, Kimie; Shirakawa, Taro; Enomoto, Tadao; Kishi, Fumio; Yoshihara, Shigemi; Matsumoto, Kenji; Saito, Hirohisa; Suzuki, Yoichi; Nakamura, Yusuke; Tamari, Mayumi
- Abstract
Although associations between endotoxin exposure or respiratory infection and asthma have been recognized, the genetic effects in these conditions are unclear. Toll-like receptors (TLRs) play an essential role in innate host defense and in the control of adaptive immune responses. IL-1R-associated kinase-M (IRAK-M) and single immunoglobulin IL-1R-related molecule (SIGIRR) negatively regulate TLR-signaling pathways. To investigate whether polymorphisms in these genes were associated with asthma or asthma-related phenotypes, we screened these genes for polymorphisms by direct sequencing of 24 asthmatics and identified 19 variants in IRAK-M and 12 variants in SIGIRR. We next conducted linkage disequilibrium mapping of the genes, and examined the association of polymorphisms and haplotypes using 391 child patients with asthma, 462 adult patients with asthma, and 639 controls. None of the alleles or haplotypes of IRAK-M and SIGIRR were associated with asthma susceptibility or asthma-related phenotype. Our results indicate that polymorphisms in IRAK-M and SIGIRR are not likely to be associated with the development of asthma in the Japanese population.
- Subjects
GENETICS of asthma; PHENOTYPES; GENETIC polymorphisms; CELL receptors; ASTHMATICS
- Publication
Journal of Human Genetics, 2006, Vol 51, Issue 4, p284
- ISSN
1434-5161
- Publication type
Article
- DOI
10.1007/s10038-005-0358-1