期刊
JOURNAL OF NEUROIMMUNOLOGY
卷 204, 期 1-2, 页码 66-74出版社
ELSEVIER
DOI: 10.1016/j.jneuroim.2008.07.017
关键词
Innate immunity; Pathogen-associated molecular patterns; Toll-like receptors; Circumventricular organs; Calcium imaging; Fever; Sickness behavior; Cytokines; Endotoxin-tolerance
资金
- Deutsche Forschungsgemeinschaft (DFG) [GE 649/6-1]
The area postrema (AP) represents the sensory circumventricular organ lacking endothelial blood-brain barrier function in direct vicinity to the 4th cerebral ventricle. Administration of lipopolysaccharide (LIPS), as opposed to muramyldipeptide (MDP) or fibroblast-stimulating lipopeptide-1 (FSL-1), caused fast transient rises in intracellular calcium concentrations in 10-12% of the microglial cells investigated in a primary microculture of the rat AP, with limited responses of neurons. astrocytes and oligodendrocytes. in addition, a marked release of the pro-inflammatory cytokines TNF-alpha and IL-6 was determined in LPS-treated AP microcultures. Pre-incubation of AP microcultures with LPS for 18 h suppressed LPS-induced calcium signaling and attenuated cytokine secretion. Evidently, the AP can act as a sensor for circulating LPS and has the capacity to develop endotoxin-tolerance. (C) 2008 Elsevier B.V. All rights reserved.
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