败血症中的氧化应激:专注于心脏病理学
Giuseppe Bertozzi1, Michela Ferrara1,2, Aldo Di Fazio1
1SIC Medicina Legale, Via Potito Petrone, 85100 Potenza, Italy.
International journal of molecular sciences
|March 13, 2024
概括
败血症显著增加了心脏中的氧化应激,证据是心肌细胞核中的8-OHdG等标记物升高. 这种不平衡会导致败血症中的心脏功能障碍,这表明氧化还原向疗法可能是有益的.
科学领域:
- 心血管病理学心血管病理学
- 败血症病理生理学
- 氧化压力研究研究 氧化压力研究
背景情况:
- 败血症是一种危及生命的疾病,其特点是宿主对感染的反应失调.
- 心脏功能障碍是败血症的常见和严重并发症.
- 氧化应激在败血症引起的心脏损伤中的作用需要进一步阐明.
研究的目的:
- 调查毒症受害者死后人类心脏样本中氧化应激的存在和程度.
- 评估与败血症相关的心脏病理中的氧化和化应激的特定免疫组织学标志物.
- 在败血症中将氧化应激标记与心脏功能障碍相关联.
主要方法:
- 使用免疫组织化学分析死后的人类心脏组织.
- 氧化/化应激标志物的量化:可诱导的氧化合成酶 (i-NOS),NOX2,尼托铁,和8-基-2'-脱氧氨 (8-OHdG).
- 在死于败血症的受试者和对照组之间的标记物表达的比较.
主要成果:
- 与对照组相比,在败血病死亡组中,i-NOS,NOX2和尼托铁的表达显著更高.
- 8-OHdG的显著增加,70%的心肌细胞核在体样本中呈阳性.
- 在败血症患者的心脏细胞中观察到强烈的NOX2和甲酸免疫反应,这表明有大量的氧化和化应激.
结论:
- 氧化和化压力在死于败血症的个体的心脏中显著升高.
- 观察到的氧化还原标记的失衡与败血症中心脏功能障碍的病理生理学有关.
- 这些发现支持进一步研究其他器官中的氧化应激,以及在败血症管理中潜在的氧化还原向疗法.
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