Undernutrition is one of the leading underlying causes of childhood morbidity and mortality in developing countries. Providing antioxidants that would help curb excess free radicals in the body may help prevent the development of kwashiorkor. We identified one cluster-RCT that attempted to investigate this. Based on the published evidence reviewed, we could draw no firm conclusions of the benefits of supplementary antioxidants for the prevention of kwashiorkor in pre-school children. There is a need for further research in this area to be certain if antioxidant supplementation can help prevent kwashiorkor in young children.
阅读完整摘要
Protein Energy Malnutrition is an important cause of child morbidity and mortality in middle- and low-income countries. It has been suggested that excessive free radical activity may be responsible for the clinical manifestation of kwashiorkor. Antioxidants may be able to curb excessive free radical activity and prevent the development of kwashiorkor in susceptible children.
研究目的
To evaluate the benefits of supplementation of vitamin E, selenium, cysteine and riboflavin (alone or in combination) in preventing kwashiorkor.
检索策略
We conducted searches of CENTRAL 2009 (The Cochrane Library 2009 Issue 2), MEDLINE 1966 to 2009, EMBASE 1980 to 2009, CINAHL 1982 to 2009, LILACS 1982 to 2009, Meta register of Controlled trials, Open Sigle, African Index Medicus.
纳入排除标准
Randomised controlled trials (RCTs) and quasi-RCTs evaluating vitamin E, selenium, cysteine and riboflavin alone or in combination in healthy pre-school children in middle- and low-income countries.
资料收集与分析
Two authors extracted and independently analysed data.
主要结果
One cluster-RCT including 2372 children met our inclusion criteria. Children were randomised, based on household, either to a supplement containing all four micronutrients or to placebo. No statistically significant difference in the incidence of kwashiorkor between the intervention and control groups could be demonstrated at 20 weeks (RR 1.70; 95% CI 0.98 to 2.42). Nor could any statistically significant difference in all-cause mortality be demonstrated (RR 0.75; 95% CI 0.17 to 3.36).
作者结论
Based on the one available trial, we could draw no firm conclusion for the effectiveness of supplementary antioxidant micronutrients for the prevention of kwashiorkor in pre-school children.
