Efficacy of Vitamin A in Fortified Extruded Rice in School Children in Satun, Thailand
试验速览
- 阶段
- 早期 1 期
- 状态
- 已完成
- 入组人数
- 50
- 试验地点
- 2
- 主要终点
- Vitamin A in the entire body
研究概览
简要总结
The project aims to evaluate the potential impact triple fortified rice grains, mixed into natural rice grains, can have on vitamin A status if fed to school children in Southern Thailand. Within a 60 day intervention study, changes in vitamin A status in young children fed the fortified rice compared to children consuming non-fortified rice will be assessed.
详细描述
Iron, zinc and vitamin A deficiencies are particularly common among children and young women in developing countries of South and Southeast Asia. Rice is a common staple for a large part of these sub-regions of Asia. In spite of a wide range of rice varieties eaten, rice is eaten by all age groups and is one of the first few foods used as complementary food for infants.
Fe fortification of rice using a method of heat extrusion and micronized ferric pyrophosphate (FePP) as iron fortificant has shown to be efficacious in increasing iron stores and reducing the prevalence of iron deficiency in Indian school children. Subsequent extrusion trials have shown promising results with respect to color and vitamin A (VA) stability when rice grains were triple fortified with Fe, Zn and vitamin A.
Preliminary data in the region of Satun, South Thailand, have shown that zinc and vitamin A intakes are low. Biochemical indicators have confirmed zinc deficiency and suboptimal vitamin A status in 1/3 of school aged children. Since rice is the main staple food in this area, rice triple fortified with Fe, VA and Zn is a promising strategy to combat micronutrient deficiencies in children.
The aim of this study is to demonstrate whether triple fortified rice has an impact on vitamin A status of children. The study will be conducted in school children (8 to 12 years old). The children will be randomized to either receive a daily lunch rice meal prepared from fortified rice (the triple fortified rice grains will be mixed into natural rice at a ratio of 1:50) or from non-fortified rice for 60 days. As serum retinol concentration, the most widely used indicator for the assessment of vitamin A status, is not a very reliable indicator due to homeostatic control and the influence of infection, we will in addition use the tracer methodology using dilution of stable isotopes with which total body vitamin A pool size will be estimated prior to the intervention and after 60 days of the intervention..
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Basic Science
- 盲法
- Double (Participant, Investigator)
入排标准
- 年龄范围
- 8 Years 至 12 Years（Child）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Children, aged 8-12 years, both sexes, attending the local primary schools
- •No known or reported history of significant chronic illness
- •Free of acute illness and febrile and gastrointestinal problems
排除标准
- •Children with severe vitamin A deficiency with a clinical sign of Bioit's spot or ocular signs of xerophthalmia will be excluded
- •Children who have serum retinol < 0.7 umol/L
结局指标
主要结局
Vitamin A in the entire body
时间窗: 4 months
A quantitative estimate of the size of exchangeable body pool of vitamin A. The exchangeable body pool of vitamin A refer to the vitamin A in body that is in dynamic state.
次要结局
- Serum retinol(2 months)