期刊
AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY
卷 200, 期 1, 页码 -出版社
MOSBY-ELSEVIER
DOI: 10.1016/j.ajog.2008.08.038
关键词
infection; mouse; MyD88; preterm labor; toll-like receptor
OBJECTIVE: We used a mouse model of infection-induced preterm delivery to examine the roles of 2 adaptor proteins with central functions in Toll-like receptor signaling: MyD88 (myeloid differentiation primary-response gene 88) and TRIF (Toll/IL-1 receptor (TIR)-domain-containing adaptor protein-inducing IFN-beta). STUDY DESIGN: Mice deficient (KO) for MyD88, TRIF, both (DKO) or neither (WT) were inoculated into the uterus with killed Escherichia coli. Delivery outcomes, fetal status, serum progesterone, and nuclear translocation of the transcription factor nuclear factor kappa B (NF kappa B) were determined. RESULTS: Preterm birth (delivery in less than 48 hours) occurred in WT and TRIF-KO animals in a dose-dependent fashion, reaching 100% with 5-10 x 10(9) bacteria, while MyD88-KO and DKO animals were completely protected from delivery. Intrauterine fetal survival, maintenance of circulating progesterone levels, and nuclear translocation of NF kappa B were also dependent upon MyD88 but not TRIF. In contrast, induction of uterine interleukin (IL)-1 beta and tumor necrosis factor alpha (TNF-alpha) depends upon actions of both MyD88 and TRIF. CONCLUSION: E coli-induced preterm delivery in the mouse is completely dependent upon MyD88 but not TRIF.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据