内毒素诱导的炎症通过上腺系统促进高血糖和抗炎性反射
Esteban Santacruz-Martínez1, Eva Soto-Tinoco1, Ruud M Buijs1
1Departamento de Biología Celular y Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico.
Brain, behavior, & immunity - health
|February 3, 2026
概括
上腺髓和上腺素对抗炎症反射至关重要,抑制瘤亡因子 (TNF) 并在免疫挑战期间引起高血糖症. 这项研究强调了它们在生理防御机制中的作用.
科学领域:
- 神经免疫学 神经免疫学
- 内分泌学 在内分泌学.
- 生理学 生理学 生理学
背景情况:
- 交感神经系统调节免疫反应,包括抑制瘤缩因子 (TNF) 的抗炎反射.
- 上腺在这种反射中的作用,特别是在免疫挑战期间的高血糖,仍然不清楚.
- 之前的研究经常使用麻醉动物,可能会改变同情反应.
研究的目的:
- 研究上腺髓和上腺素在有意识的,没有压力的动物中的同情性抗炎性反射和相关的高血糖的作用.
- 为了阐明交感神经系统对内毒素 (LPS) 管理的反应的不同途径.
主要方法:
- 静脉注射脂多糖 (LPS) 给有意识,完整的动物.
- 使用了印美他辛 (前列腺素合成抑制剂) 和醇 (β-上腺素受体阻断剂).
- 进行上腺除 (AdMX) 并给出上腺素或诺上腺素以评估其作用.
主要成果:
- 抑制前列腺素合成或β-上腺素受体增加了TNF,并预防了LPS诱导的高血糖症.
- 上腺去化 (AdMX) 动物在LPS后表现出更高的TNF,缺乏高血糖.
- 在AdMX动物中,静脉注射上腺素,但不是诺亚上腺素,恢复了高血糖和降低了TNF.
- 前列腺素需要上腺来诱导高血糖.
结论:
- 上腺髓和循环中的上腺素对于无情交感抗炎途径至关重要.
- 上腺素抑制TNF分泌,并在急性免疫挑战期间促进高血糖症.
- 这种上腺介导的反应对于在感染期间为身体的防御提供燃料至关重要.
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