在早期动脉样硬化和血管疾病中明显的损伤
Alejandro R Chade1, Martin Rodriguez-Porcel, Joseph P Grande
1Department of Internal Medicine, Division of Hypertension, Mayo Clinic, Rochester, Minn 55905, USA.
Circulation
|August 28, 2002
概括
同时的高胆固醇血症和动脉狭窄症 (RAS) 显著损害功能和结构. 这种组合加剧了氧化应激和炎症,可能加速病的进展.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 心血管研究研究心血管研究
- 病理生理学 病理生理学
背景情况:
- 动脉样硬化性血管疾病 (RAS) 可以恶化功能,但机制尚不清楚.
- 这项研究研究了动脉样硬化和RAS对脏健康的综合影响.
研究的目的:
- 测试早期动脉样硬化与RAS相结合是否对脏功能和结构产生比单独RAS更大的有害影响.
- 为了阐明损伤的潜在机制,同时高胆固醇和RAS.
主要方法:
- 猪被养正常或高胆固醇 (HC) 饮食,接受RAS或组合 (HC + RAS) 12周.
- 在体内评估脏血液动力学和功能使用计算机断层扫描.
- 组织的ex vivo分析检查了纤维硬化,炎症和分子标志物.
主要成果:
- 同时使用HC和RAS (HC+RAS) 显著损害了管状再吸收和对血管活性剂的GFR反应.
- HC+RAS脏显示纤维硬化,炎症,氧化应激以及NF-κB和iNOS的表达增加.
- 在RAS和HC+RAS组中,基底输液和GFR降低类似.
结论:
- 早期慢性HC+RAS对脏管状和状部产生明显的有害影响.
- 增加的氧化应激和炎症与功能和结构损伤有关.
- 这些发现可能解释了临床上观察到的加速进展到末期病的情况.
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