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Cholesterol Efflux Assay
Published on: March 6, 2012
重建的高密度脂蛋白通过促进胆固醇外流,减弱2型糖尿病患者的血小板功能
Anna C Calkin1, Brian G Drew, Akiko Ono
1Diabetes Complications Laboratory, Baker IDI Heart and Diabetes Institute, PO Box 6492, St Kilda Rd Central, Melbourne, Australia 8008. anna.calkin@bakeridi.edu.au
Circulation
|November 11, 2009
概括
复制的高密度脂蛋白 (rHDL) 有效地降低了2型糖尿病患者的高反应性血小板. 这种疗法可能为糖尿病患者预防心血管并发症提供了一种新方法.
科学领域:
- 心血管研究研究心血管研究
- 代谢障碍 代谢障碍 代谢障碍
- 血液学 血液学 血液学
背景情况:
- 糖尿病会增加心血管疾病的风险,并导致血小板过敏反应.
- 糖尿病血小板对阿司匹林和克洛皮多格雷尔等标准抗血栓治疗药物表现出耐药性.
- 重建的高密度脂蛋白 (rHDL) 对动脉样硬化斑块具有已知的短期益处.
研究的目的:
- 研究rHDL在降低2型糖尿病患者血小板过敏活性的疗效.
- 为了确定rHDL是否能够克服糖尿病血小板对抗血栓剂的抗性.
- 阐明 rHDL 影响血小板功能的机制.
主要方法:
- 2型糖尿病患者接受了安慰剂或rHDL (CSL-111) 的输注.
- 评估了ex vivo血小板聚合和在流下的血栓形成.
- 在体外研究中,研究了rHDL成分 (脂,阿波利波蛋白AI) 对血小板功能和胆固醇流动的影响.
主要成果:
- rHDL输液将血的HDL胆固醇水平提高了大约1.4倍.
- rHDL显著降低了ex vivo血小板聚合反应 (> 50%) 和血栓形成 (50%).
- rHDL的作用部分是由其脂成分介导的,增强胆固醇排泄和减少血小板中的脂质组装.
结论:
- rHDL治疗有效地抑制了糖尿病血小板的高反应性,部分是通过降低血小板膜胆固醇.
- rHDL输液显示出作为减轻糖尿病患者动脉血症并发症的策略的潜力.
- 进一步的研究支持rHDL在管理与糖尿病相关的心血管风险方面的作用.
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