The overall objective is to determine the impact of EED on zinc absorption and homeostasis, and its impact on the absorptive capacity of vitamin A absorption of young children (18-24 months of age) in an austere setting with high rates of diarrhea, stunting, and micro-nutrient deficiencies.
Participating children are screened for EED using the lactulose:mannitol ratio test and assigned to one of two groups: +EED or -EED. All participants will be given standard, physiological dose of 3 mg zinc sulfate with a zinc stable isotope tracer on study day 8. On study day 11, 0.5 mg of 13C10-retinyl-acetate will be administered orally to all participants. Spot urine samples will be collected twice daily from study days 11-14. Complete fecal collections will be obtained for days 11-14. Duplicate diets of all foods consumed will be collected on days 11-14. On study day 14, a blood sample will be taken for analysis of vitamin A isotope status.
Study Type
OBSERVATIONAL
Enrollment
46
University of Colorado Denver School of Medicine
Aurora, Colorado, United States
icddr,b (International Centre for Diarrheal Disease Research, Bangladesh
Dhaka, Bangladesh
Absorption of zinc (AZ) from standard dose
Absorption of zinc from standard 3 mg dose will be measured using zinc isotope tracer methods
Time frame: 1 day
Endogenous fecal zinc (EFZ)
EFZ measured from zinc isotope ratios in complete fecal collections
Time frame: 4 days
Vitamin A absorption
Absorption efficiency of retinol will be measured by isotope ratios in blood
Time frame: 1 day
Plasma zinc
Plasma zinc concentration
Time frame: 1 day
Alkaline phosphatase
Time frame: 1 day
Serum retinol
Time frame: 1 day
Methyl malonic acid
serum
Time frame: 1 day
Vitamin B12
Time frame: 1 day
Serum ferritin
Time frame: 1 day
Soluble transferrin receptors
Time frame: 1 day
C-reactive Protein (CRP)
Time frame: 1 day
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Alpha-Glycoprotein (AGP)
Time frame: 1 day
Tumor necrosis factor (TNF) alpha
Time frame: 1 day
Serum endocab
Time frame: 1 day
Fecal neopterin
Time frame: 1 day
Myeloperoxidase
Time frame: 1 day
Alpha 1 antitrypsin
Time frame: 1 day
Calprotectin
Time frame: 1 day