免疫调节作用和通过抗生素莫西弗洛克萨辛在败血症中的保护
Tiago R Velho1,2,3, Helena Raquel3, Nuno Figueiredo3,4
1Department of Cardiothoracic Surgery, Hospital de Santa Maria, Unidade Local de Saúde de Santa Maria, Av. Prof. Egas Moniz, 1649-035 Lisbon, Portugal.
Antibiotics (Basel, Switzerland)
|August 29, 2024
概括
抗生素moxifloxacin显示出作为治疗败血症的免疫调节剂的前景. 它通过减少关键的炎症性细胞因子,显著提高动物模型的生存率,独立于其抗菌作用.
科学领域:
- 免疫学 免疫学 免疫学
- 药理学 药理学是指药理学的学科.
- 关键护理医学 关键护理医学
背景情况:
- 败血症是一种危及生命的疾病,也是重症监护室死亡的主要原因.
- 目前的败血症治疗方法缺乏实质性的质量改进,突出显示出需要新的治疗策略.
- 瘤亡因子-α (TNF-α) 和介素-1β (IL-1β) 是败血症发病的关键调解者.
研究的目的:
- 为了研究广泛使用的诺基诺隆抗生素莫西弗洛克萨的免疫调节作用.
- 评估moxifloxacin在败血症临床前模型中对细胞因子产生和生存的影响.
- 为了确定莫西弗洛克萨的保护作用是否与其抗菌活性或DNA损伤诱导有关.
主要方法:
- 在体外研究中使用用脂多糖 (LPS) 或大肠杆菌 (E. coli) 刺激的THP1细胞.
- 在体内研究中,C57BL/6和Atm-/-小鼠接受了LPS注射或结和穿刺 (CLP).
- 使用ELISA,CFU计数和彗星分析量化细胞因子,器官损伤标记物,细菌负载和DNA损伤.
主要成果:
- 莫西弗洛克萨显著抑制了刺激免疫细胞中的TNF-α和IL-1β分泌.
- 在患有严重败血症的小鼠中,莫西弗洛克萨的使用增加了80%的生存率,减少了炎症标志物.
- 没有观察到moxifloxacin导致的DNA损伤;ATM-/-小鼠在CLP后也表现出显著的保护.
结论:
- 莫西弗洛克萨作为一种免疫调节剂,减少TNF-α和IL-1β等促炎性细胞因子.
- 莫西弗洛克萨在毒症的小鼠模型中显示出显著的保护作用,改善了生存率并减少了器官损伤.
- 这些有益作用独立于莫西弗洛克萨的抗菌特性,不涉及DNA损伤.
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