在患有大动脉狭窄症的患者中,白二氧化和氧化应激状态
Carlo Savini1,2, Elena Tenti1, Elisa Mikus1
1GVM Care and Research, Maria Cecilia Hospital, 48033 Cotignola, Italy.
Biomolecules
|December 23, 2023
概括
严重的大动脉狭窄会增加氧化压力,氧化白蛋白 (HSA-Cys) 的升高和抗氧化能力的降低表明了这一点. 破坏硫化-硫化键的剂可能有助于减轻膜疾病中这种氧化应激.
科学领域:
- 生物化学 生物化学
- 心血管医学 心血管医学
- 氧化压力研究研究 氧化压力研究
背景情况:
- 反应性氧物种与心脏膜疾病的发展和进展有关.
- 人类血清白蛋白 (HSA) 在氨酸34的氧化变化是氧化应激的标志物.
研究的目的:
- 在患有严重大动脉狭窄症的患者中调查HSA和血清抗氧化能力的氧化变化.
- 评估治疗剂在减轻主动脉狭窄中氧化应激的潜力.
主要方法:
- 氧化 (HSA-Cys) 和减少 (HSA-SH) 专蛋白形式在44名严重的大动脉狭窄患者和10名健康对照者的分析.
- 测量血清自由硫基和总抗氧化活性.
- 在实验室中评估阿司匹林 (ASA),N-乙半氨酸及其胺衍生物对HSA-SH水平的影响.
主要成果:
- 与对照组相比,患有严重大动脉狭窄症的患者表现出增加的HSA-Cys,减少的HSA-SH,减少的自由硫基,以及较低的总抗氧化活性.
- 接受第二次门置换的患者表现出与对照组相似的生物标志物水平.
- 在实验室中,阿司匹林治疗增加了自由硫基,这表明它在减少氧化应激方面发挥了作用.
- N-乙半氨酸及其衍生物成功地再生了HSA-SH.
结论:
- 系统性氧化应激,由高HSA-Cys证明,在大动脉狭窄患者显著增加.
- 二硫化分解剂显示出再生HSA-SH和减轻大动脉狭窄时的氧化应激的潜力.
- 对这些药物的进一步研究可能会导致对膜疾病的新型治疗策略.
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