›› 2006, Vol. 26 ›› Issue (1): 28-30.

• 论文 • 上一篇    下一篇

营养摄入限制对老年小鼠血甘油三酯及骨密度的影响

  

  1. 1.上海体育学院运动科学系,上海 200438;2.复旦大学实验动物科学部,上海 200032
  • 收稿日期:2005-10-23 出版日期:2006-01-25 发布日期:2006-01-25
  • 基金资助:

    上海市重点学科建设项目(编号T0901)资助

Effect of Nutrient Restriction on Triglyceride Content and Bone Mineral Density in Aged Mice

  1. 1.Department of Exercise and Sport Science, Shanghai University of Sport,Shanghai 200438, China;2.Laboratory Animal Department, FuDan University,Shanghai 200032,China
  • Received:2005-10-23 Online:2006-01-25 Published:2006-01-25

摘要: 目的 研究营养摄入限制对老年小鼠脂代谢及骨代谢的影响作用。方法 以12月龄老年雄性KM小鼠为研究对象,实施12周每日限食30%总能量的限食方案,另取3月龄、7月龄及同龄雄性KM小鼠作为青年、成年及老年对照组,观测体重动态变化,并测定甘油三酯(TG)和骨密度。结果老年限食组在限食第2、3周的体重下降幅度最为显著,此后下降趋势减缓;老年限食组甘油三酯值低于老年对照组(P<0.05),骨密度值与老年对照组、成年对照组相比,无显著差异。结论30%的营养摄入限制能显著降低老年小鼠血中甘油三酯,对骨密度的作用则依赖于骨代谢综合影响因素。

关键词: 营养, 衰老, 骨密度, 甘油三酯

Abstract: Objective Effects on the lipid and bone metabolism were discussed by nutrient restriction in aged mice. Methods The male KM mice of 12 month age were used for the nutrient restriction plan that 30% off total energy a day during 12 weeks. The same amounts of 3,7 and 12 month age, male KM mice were used as the young, adult and aged control group respectively. The changes of body weight, triglyceride (TG) content and bone mineral density (BMD) were tested. Resu. ts There was a significant decrease of body weight in the restriction group in the second, third week, then become a slow decrease. Compared with the aged control, TG was lower in the restriction group (P<0.05). Compared with the adult and aged control group respectively, there was no significant difference on BMD of the restriction group. Conclusions 30% off nutrient restriction plan induced the TG decreasing significantly and BMD was influenced by the synthetic factors in bone metabolism.

Key words: Nutrition, Aging, Bone mineral density, Triglyceride