期刊
JOURNAL OF NEUROIMMUNOLOGY
卷 344, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jneuroim.2020.577244
关键词
Thermoregulation; Infection; Circumventricular organ; TLR2
资金
- Japan Society for the Promotion of Science [16K07027, 19K06921]
- Grants-in-Aid for Scientific Research [19K06921, 16K07027] Funding Source: KAKEN
Toll-like receptor 2 (TLR2) recognizes a wide range of microbial molecules and plays critical roles in the initiation of innate immune responses. In the present study, we aimed to investigate whether the depletion of microglia and macrophages with clodronate liposomes (Clod-Lips) attenuates the activation of mouse brain circuits for TLR2-mediated inflammation and hypothermia. The peripheral administration of the TLR2 agonist zymosan induced nuclear factor-kappa B activation in microglia and macrophages and Fos expression in astrocytes/tanycytes and neurons in the circumventricular organs (CVOs). The depletion of microglia and macrophages with Clod-Lips markedly decreased zymosan-induced Fos expression in astrocytes/tanycytes and neurons in the CVOs. The treatment with Clod-Lips significantly attenuated zymosan-induced hypothermia. These results indicate that microglia and macrophages in the CVOs participate in the initiation and transmission of inflammatory responses after the peripheral administration of zymosan.
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