迪奥斯梅丁可以通过抑制SIRT1/GPX4介导的铁灭症来缓解S. aureus诱导的乳腺炎
Lihua Zhao1, Lei Jin2, Bin Yang1
1Department of Breast Surgery, China-Japan Union Hospital of Jilin University, Changchun 130033, Jilin, China.
Life sciences
|August 31, 2023
概括
迪奥斯美丁通过减少炎症和铁亡,有效地治疗黄金葡萄球菌诱导的乳腺炎. 这种天然化合物减轻病理损伤,恢复乳腺中抗氧化剂的平衡.
科学领域:
- 生物医学科学 生物医学科学
- 药理学 药理学是指药理学的学科.
- 免疫学 免疫学 免疫学
背景情况:
- 乳腺炎是一种常见的乳腺感染,主要是由微生物病原体引起的.
- 黄金葡萄球菌 (S. aureus) 是一个重要的病原体,负责诱导乳腺炎.
- 了解S. aureus引起的乳腺炎的治疗干预措施对于动物和人类健康至关重要.
研究的目的:
- 为了研究迪奥斯梅丁在抗 Staphylococcus aureus 诱导的乳腺炎的治疗潜力.
- 阐明底层机制,通过该 diosmetin 施加其抗乳腺炎效应.
主要方法:
- 建立了一个S. aureus诱导的乳腺炎的小鼠模型.
- 小鼠接受了多种剂量的迪奥斯梅丁 (12.5,25,50毫克/公斤) 或迪奥斯梅丁与EX-527 (一种SIRT1抑制剂) 的组合治疗.
- 评估了病理变化,炎症标志物 (MPO,TNF-α,IL-1β,NF-κB),氧化应激标志物 (MDA,Fe2+),抗氧化剂水平 (ATP,GSH) 和关键蛋白表达 (GPX4,SIRT1,Nrf2,HO-1).
主要成果:
- 迪奥斯梅丁显著降低了由S. aureus引起的乳腺病理损伤.
- 用迪奥斯梅丁治疗降低了髓氧化酶活性,促炎性细胞因子 (TNF-α,IL-1β),NF-κB激活,以及甲水平.
- 迪奥斯梅丁提高了抗氧化防御的调节,包括ATP和谷氨 (GSH) 生产,并增加了GPX4,SIRT1,Nrf2和HO-1的表达.
- 由于SIRT1抑制剂EX-527减少了迪奥斯梅丁的保护作用,这表明SIRT1的参与.
结论:
- 迪奥斯梅丁有效地抑制S. aureus诱导的乳腺炎.
- 迪奥斯梅丁的抗乳腺炎作用是通过减轻炎症和铁亡作用进行的.
- SIRT1信号通路在迪奥斯梅丁对乳腺炎的保护机制中发挥着关键作用.
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