51. Impact of Different Strategies for Delivering Supplemental Zinc on Selected Fecal Markers of Environmental Enteric Dysfunction among Young Laotian Children: A Randomized Controlled Trial
- Author
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Hinnouho, Guy-Marino, Wessells, K Ryan, Barffour, Maxwell A, Sayasone, Somphou, Arnold, Charles D, Kounnavong, Sengchanh, and Hess, Sonja Y
- Subjects
Biomedical and Clinical Sciences ,Clinical Sciences ,Clinical Research ,Digestive Diseases ,Pediatric ,Clinical Trials and Supportive Activities ,Nutrition ,Biomarkers ,Child Development ,Child Health ,Diarrhea ,Dietary Supplements ,Double-Blind Method ,Feces ,Female ,Humans ,Infant ,Laos ,Leukocyte L1 Antigen Complex ,Male ,Micronutrients ,Neopterin ,Peroxidase ,Zinc ,Medical and Health Sciences ,Tropical Medicine ,Biomedical and clinical sciences ,Health sciences - Abstract
The objective of this study was to assess the impact of different strategies for delivering supplemental zinc on fecal myeloperoxidase (MPO), neopterin (NEO), and calprotectin (CAL) among young Laotian children. In a double-blind controlled trial, children aged 6-23 months were randomized to receive either daily preventive zinc (PZ) tablets (7 mg/day), daily micronutrient powder (MNP; containing 10 mg zinc and 14 other micronutrients), therapeutic zinc (TZ) supplements for diarrhea treatment (20 mg/day for 10 days), or daily placebo powder and followed for ∼36 weeks. Stool samples were collected at baseline and endline. Fecal MPO, NEO, and CAL concentrations were determined in a randomly selected subsample of 720 children using commercially available ELISA kits. At baseline, the mean age was 14.1 ± 4.9 months and prevalence of stunting was 39%. The endline prevalence of stunting was 43%; there was no overall treatment effect on physical growth in the parent trial. At endline, the mean (95% CI) MPO in the PZ group was 1,590 [1,396; 1,811] ng/mL and did not differ from that in the MNP (1,633 [1,434; 1,859] ng/mL), TZ (1,749 [1,535; 1,992] ng/mL), and control (1,612 [1,415; 1,836] ng/mL) groups (P = 0.749). Similarly, there was no overall treatment effect on NEO and CAL concentrations (P = 0.226 and 0.229, respectively). In this population, the provision of PZ or TZ supplements or MNP had no impact on growth or environmental enteric dysfunction (EED) as assessed by fecal MPO, NEO, and CAL. Additional research is needed to better understand the etiology and proposed mechanisms of EED pathogenesis.
- Published
- 2020