补充复合营养素对中老年人营养和免疫状况影响的研究

目的:探讨补充复合营养素对中老年人营养和免疫状况的影响。方法:选择50～65岁的中老年人志愿者,分两组,实验组服用复合营养素片,对照组服用安慰剂。实验开始和结束时分别进行体格测量、血液生化和免疫指标测定。结果:试验前对象,身高、体重和营养素摄入、血液生化指标和免疫指标两组均无差异(P﹥0.05)。6个月后,实验组血清维生素A(VA)、血清锌(Zn)和全血硒(SE)高于对照组;体液免疫指标血清IgA、IgG、IgM、补体C3高于对照组(均P<0.05),细胞免疫指标两组无差别(P>0.05)。结论:复合营养素补充剂能改善中老年人VA、Zn、Se营养状况,并能促进体液免疫功能。

IMPACT OF SUPPLEMENTATION OF COMPOUND NUTRIENTS ON NUTRITIONAL AND IMMUNE STATUS OF MIDDLE-AGED AND ELDERLY PEOPLE

Objective:To explore the impact of compound nutrients supplementation on nutritional and immune status in middle-aged and elderly people.Method:The volunteers aged 50-65 years old were randomized into two groups.The supplement was given to the test group,the control group took placebo.Results:In comparison with the control group,the test group had a higher level of serum vitamin A and zinc,blood selenium.The humoral immune indices as IgA、IgG、IgM、C3 of the test group were higher than those of the control group,but no significant difference of cellular immunity indices between two groups.Conclusion:Supplementation of compound nutrients could improve the nutritional status of vitamin A,zinc and selenium,and may promote humoral immunity.