饮食模式对血清homocysteine的影响:随机对照养研究的结果
L J Appel1, E R Miller, S H Jee
1Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, MD, USA. lappel@welch.jhu.edu
Circulation
|August 23, 2000
概括
饮食模式显著影响同类半氨酸水平,这是心血管疾病的危险因素. 富含水果,蔬菜和低脂肪乳制品的饮食降低了同型半氨酸,与对照或仅含水果/蔬菜的饮食不同.
科学领域:
- 营养科学 营养科学
- 心血管健康 心血管健康
- 代谢研究 代谢研究
背景情况:
- 高水平的同类半氨酸与增加动脉样硬化心血管疾病的风险有关.
- 对维生素补充剂对同类氨酸的影响的研究广泛,但对饮食模式的影响仍然不太了解.
研究的目的:
- 为了研究改变饮食模式对禁食时血清总同类半氨酸水平的影响.
- 在心血管疾病风险的背景下,探索饮食和同类氨酸之间的关系.
主要方法:
- 一个3周的运行期与控制饮食,其次是8周的干预与三个随机分配的饮食.
- 饮食包括:控制,丰富的水果和蔬菜,以及水果,蔬菜,低脂肪乳制品和减少脂肪的组合.
- 在干预之前和之后,用多变量回归分析测量了同类半氨酸水平.
主要成果:
- 组合饮食显著降低了同类氨酸水平 (-0.34微摩尔/升,P=0.03与对照组相比).
- 水果和蔬菜饮食显示非显著的减少 (+0.21微摩尔/L,P=0.47与对照).
- 同型半氨酸的变化与血清叶酸 (P=0.03) 相反相关,但与维生素B12或维生素B6无关.
结论:
- 饮食模式的修改可以大大影响禁食的血清总同型半氨酸.
- 这些发现提供了关于饮食如何影响动脉样硬化心血管疾病的发展的见解.
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