1. [Evaluation on the dietary iron absorption by young Tibetan men using stable isotopic tracer].
- Author
-
Zhou JC, Huang CY, Zhang HM, Liu XL, Yang X, Pu J, Jia Q, and Hong J
- Subjects
- Adolescent, Dysprosium, Feces chemistry, Humans, Intestines physiology, Iron Isotopes, Isotope Labeling, Male, Tibet, Young Adult, Intestinal Absorption physiology, Iron, Dietary pharmacokinetics
- Abstract
Objective: The study was aimed to evaluate the iron absorption in the Tibetan man's diet using the stable isotopic iron, and present a reference to improve the dietary iron absorption for Chinese., Methods: In the study conducted on the spot of high altitude (> 3500m), the iron tracer (FeSO4 enriched with 57Fe) and the recovery indicator dysprosium (Dy) were orally administrated to 16 young Tibetan men, and their feces were sampled. The ratios of 57Fe/56Fe in fecal samples was determined by inductively coupled plasma mass spectrometry, and then the iron absorption was calculated based on the principle of isotope dilution., Results: The rate of dietary iron absorption in young Tibetan men was 13.4% +/- 6.4% with good linear correlation between daily fecal excretions of iron tracer and Dy., Conclusion: Dy had the same behavior as non-absorbed iron tracer in the digestive tract and the recovery of Dy may indicate the completeness of fecal collection. Dietary iron absorption in the adult Tibetan man was relatively high.
- Published
- 2006