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欧米茄3脂肪酸 - - 多可沙赫酸 (DHA) 在实验性败血症中减轻炎症反应
Bianca Portugal Tavares de Moraes1,2,3, Isabelle Moraes-de-Souza3,4, Gabrielle Lacerda de Souza Gomes-Reis3,4
1Immunopharmacology Laboratory, Federal University of State of Rio de Janeiro, Rio de Janeiro, Brazil.
Frontiers in pharmacology
|December 15, 2025
概括
多可萨赫萨酸 (DHA) 降低了中性粒细胞的附着性,并改善了实验性败血症的结果. 补充DHA可缓解败血症引起的血管功能障碍和器官损伤,提供一种潜在的治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 血管生物学 血管生物学
- 营养科学 营养科学
背景情况:
- 败血症是由于感染而导致的危及生命的器官功能障碍,其特点是系统性炎症和血管损伤.
- 白细胞对内皮的粘附和血管完整性的损害是败血症的关键特征.
- 作为一种omega-3多不和脂肪酸 (PUFA),多和酸 (DHA) 具有抗炎和促进溶解的特性.
研究的目的:
- 研究DHA在减轻败血症引起的炎症和血管功能障碍方面的治疗潜力.
- 评估DHA对中性粒细胞功能和白细胞-内皮细胞相互作用的影响.
- 在体内评估DHA对败血症进展和器官损伤的影响.
主要方法:
- 流室测定与与DHA治疗的隔离的人类和小鼠中性粒细胞.
- 内显微镜对TNF刺激的小鼠肌肌进行内显微镜,以评估体内白细胞粘附.
- 在小鼠实验性败血症的结和刺穿 (CLP) 模型,用脑内微循环的静脉显微镜.
主要成果:
- 通过降低粘附标记,DHA在体外和体内显著降低了中性粒细胞的滚动和粘附.
- 在CLP模型中,DHA治疗改善了败血症参数,包括降低死亡率,炎症和乳酸水平.
- DHA改善了大脑的微循环 perfusion,并增加了血和脑组织中的亲溶解介质.
结论:
- 在实验性败血症中,DHA表现出显著的抗炎和促溶解作用.
- DHA可以缓解与败血症相关的血管功能障碍,白细胞透和器官损伤.
- DHA被认为是治疗败血症的有前途的治疗剂.
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