在AngII-高血压中,2-Methoxyestradiol和Lipoxygenase的中心相互作用
Shubha R Dutta1, Purnima Singh1, Chi Young Song1
1Department of Pharmacology, Addiction Science, and Toxicology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN.
Hypertension (Dallas, Tex. : 1979)
|February 4, 2025
概括
作为17β- Estradiol的代谢物,2-甲基 Estradiol通过抑制雌性小鼠的副腹腔核 (PVN) 中的脂氧酶 (LOX) /12(S) - HETE通路来防止血管素II诱导的高血压.
科学领域:
- 内分泌学 在内分泌学.
- 神经科学是一个神经科学.
- 心血管研究研究心血管研究
背景情况:
- 阿拉基酸-12/15-脂氧酶 (LOX) 代谢物12(S) -HETE有助于血管素II (AngII) 诱导的高血压.
- 17β-雌二醇代谢物2-甲基二醇通过副腹腔核 (PVN) 保护抗AngII诱导的高血压.
研究的目的:
- 测试二甲基二醇抑制PVN中的LOX/12(S) -HETE通路的假设.
- 在雌性小鼠中研究2-甲基二醇在AngII诱导的高血压中的作用.
主要方法:
- 在野生型,LOX-Knockout (LOXKO) 和CYP1B1Knockout雌性小鼠中输注 ангиотензинII.
- 选择性注射腺病毒载体,12(S) -HETE和2-甲氧二醇到PVN或脑内静脉内.
- 血压测量通过尾巴手套/放射测量和组织学/生物化学分析.
主要成果:
- 在CYP1B1KO小鼠中,PVN-LOX敲击降低了AngII诱导的高血压.
- 在LOXKO小鼠中,大脑内静脉12(S) -HETE加剧了高血压和相关的发病,特别是在卵巢切除时.
- 在卵巢切除后的LOXKO小鼠中,脑内静脉内二甲基 Estradiol降低了LOX表达和12(S) - HETE水平,减轻了AngII效应.
结论:
- 2-甲基醇可能通过抑制PVN中的LOX/12(S) - HETE作用来防止AngII诱导的高血压.
- 选择性LOX抑制剂或12(S) -HETE受体对抗剂可以治疗绝经后或低雌激素女性的高血压.
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