缺乏铁的饮食减少了apoE缺乏小鼠的动脉样硬化病变
1Division of Cardiovascular Research, Institute of Biomedical Sciences, Academia Sinica Laboratory, Taipei, Taiwan.
Circulation
|March 9, 1999
概括
饮食中铁的限制通过限制铁沉积和LDL氧化,显著减少了小鼠的动脉样硬化进展. 这项研究强调了铁.
科学领域:
- 心血管研究研究心血管研究
- 营养科学 营养科学
- 生物医学研究生物医学研究
背景情况:
- 在人类动脉样硬化病变中观察到铁沉积.
- 铁在动脉样硬化发展中的作用需要进一步研究.
研究的目的:
- 在apolipoprotein E (apoE) 缺乏的小鼠中研究铁沉积和动脉样硬化严重程度之间的相关性.
- 为了评估低铁饮食对这些小鼠动脉样硬化病变进展的影响.
主要方法:
- 珍珠染色用于检测apoE缺陷小鼠组织中的铁沉积.
- 在3个月的时间里,小鼠被食低铁饮食或标准食.
- 血液学参数,血清铁,铁素,胆固醇,脂蛋白氧化和动脉样硬化病变的发展被评估.
主要成果:
- 在动脉样硬化病变,心脏和肝脏中以年龄取决的方式发现了铁沉积物.
- 低铁饮食降低了血清费里水平,并增加了脂蛋白对氧化的抵抗力.
- 低铁饮食中的小鼠表现出显著较小的动脉样硬化病变,大动脉中铁沉积减少,以及对氧化LDL的自身抗体水平较低.
结论:
- 铁沉积与apoE缺乏小鼠的动脉样硬化进展密切相关.
- 饮食中铁的限制显著抑制了病变的形成,并减少了血管病变中的铁沉积和LDL氧化.
- 低铁饮食对减轻动脉样硬化有有益影响.
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