学习障碍儿童微量元素测定及营养素摄入的分析

目的旨在对儿童学习障碍(LD)的可能发病机制以及促进学习障碍儿童学习成绩提高的膳食指导提供一定的线索,探讨了微量元素与营养素对儿童学习障碍的影响。方法测定LD组与对照组儿童各50名血清Zn、Cu、Fe、Pb含量,并对两组儿童膳食进调查分析。结果LD组儿童血清Zn、Cu、Fe显著低于对照组(P<0.01),而血清Pb显著高于对照组(P<0.01);摄入营养素Zn、Cu、Fe、V itB1、DHA、AA、EPA显著低于对照组(P<0.01),两组儿童维生素C、蛋白质以及钙摄入的差异无统计学意义。结论儿童学习障碍的发生可能与饮食结构失调有关,应重视LD儿童饮食结构的调整,增加富含Zn、Cu、Fe、V itB1、DHA、AA、EPA食物的摄入。

To detect the trace element and analyse the nutrition in children with learning disability

Objectives: To investigate if trace element and nutrition affect children with learning disability(LD),so as to provide some information for the possible pathogenic mechanism of children with learning disability.Methods: The serum zinc,copper,iron,lead composition were detected and the diet were explored in each fifty children with learning disability and normal children.Results: The serum zinc,copper,iron content in subjects with LD was significantly lower than that in control subjects(P < 0.01).On the other hand,children with LD had significantly higher serum lead levels compared to the control children(P < 0.01).Additionally,subjects with LD had significantly lower intakes of zinc,copper,iron and vitamin B1,docosahexaenoic acid (DHA) 22:6(n-3)],arachidonic acid(AA;20:4 n;-6),eicosapentaenoic acid(EPA;20:5 n;-3)) compared to those of control subjects(P < 0.01).The difference was no significance in intakes of vitamin C,protein,calcium in these two groups.Conclusion: There is possible relationship between LD and dietary structure.It is important to adjust the dietary structure of children with learning disability,and increasing intakes of rich in zinc,copper,iron and vitamin B1,docosahexaenoic acid(DHA) 22:6(n-3)] ,arachidonic acid(AA;20:4 n;-6),eicosapentaenoic acid(EPA;20:5 n;-3)).