Study on Physiologic Requirement and Dietary Recommended Nutrient
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 600
- 试验地点
- 1
- 主要终点
- thyroid-stimulating hormone
研究概览
简要总结
Iodine is one of essential micronutrient for human, both iodine deficiency and excess will be harmful for human health. Children is the susceptible population to iodine nutrition, and studies show that even mild iodine deficiency would affect the growth and development of children, so it is urgent to identify the dietary recommended nutrient intake (RNI) of iodine for children to guide children scientifically and safely supplement iodine. There are few studies about the dietary recommended nutrient intake (RNI) of iodine in children, and present data are old and outdated.
详细描述
Based on the investigators'previous study on upper safe level of iodine on children from areas with high iodine in drinking water, this study will conduct an epidemiological study on 600 children living in areas with high water iodine content but the actual iodine content in participants' drinking water is not so high, while no supply of iodized salt.
Meanwhile, in order to get iodine dietary recommended nutrient intake (RNI) values of children. The investigators will conduct a iodine balance experiment on children with sufficient iodine nutrition. We will randomly select thirty healthy students for a three-day iodine balance experiment from the cross-sectional study. The investigators will use the regression model to obtain an iodine intake value when children at"zero iodine"balance. Combine the study at population and individual level, the investigators will obtain data on dietary recommended nutrient intake (RNI) of iodine for Chinese children, to properly guide children iodine supplementation to avoid iodine deficiency, which also will provide data for the update of Chinese dietary reference intakes of iodine.
研究设计
- 研究类型
- Observational
- 观察模型
- Other
- 时间视角
- Cross Sectional
入排标准
- 年龄范围
- 7 Years 至 11 Years（Child）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Normal body mass index and thyroid function have not been treated for thyroid disease have not used amiodarone and other drugs (including iodine supplements) during the investigation have no major diseases and family history have lived in the local area for more than 5 years
排除标准
- •Long-term low-protein long-term low-heat energy malnutrition
结局指标
主要结局
thyroid-stimulating hormone
时间窗: 2 weeks
mIU/L
thyroperoxidase antibody
时间窗: 2 weeks
IU/mL
thyroglobulin antibody
时间窗: 2 weeks
IU/mL
urinary iodine concentration
时间窗: 2 weeks
μg/L
free triiodothyronine
时间窗: 2 weeks
pmol/L
diet iodine intake
时间窗: 2 weeks
μg/day
salt iodine concentration
时间窗: 2 weeks
μg/L
water iodine intake
时间窗: 2 weeks
μg/day
fecal iodine excretion
时间窗: 2 weeks
μg/day
free thyroxine
时间窗: 2 weeks
pmol/L
urinary iodine excretion
时间窗: 2 weeks
μg/day
次要结局
未报告次要终点
研究者
Chen Wen
Teacher
Tianjin Medical University