Small-quantity lipid-based nutrient supplements containing different amounts of zinc along with diarrhea and malaria treatment increase iron and vitamin A status and reduce anemia prevalence, but do not affect zinc status in young Burkinabe children: a cluster-randomized trial

Souheila Abbeddou, Elizabeth Yakes Jimenez, Jérome W Somé, Jean Bosco Ouédraogo, Kenneth H Brown, Sonja Y Hess, Souheila Abbeddou, Elizabeth Yakes Jimenez, Jérome W Somé, Jean Bosco Ouédraogo, Kenneth H Brown, Sonja Y Hess

Abstract

Background: We assessed the effects of providing a package of interventions including small-quantity lipid-based nutrient supplements (SQ-LNS) containing 0, 5 or 10 mg zinc and illness treatment to Burkinabe children from 9 to 18 months of age, on biomarkers of zinc, iron and vitamin A status at 18 months and compared with a non-intervention cohort (NIC).

Methods: Using a two-stage cluster randomized trial design, communities were randomly assigned to the intervention cohort (IC) or NIC, and extended family compounds within the IC were randomly assigned to different treatment groups. IC children (n = 2435) were provided with 20 g SQ-LNS/d containing 0, 5 or 10 mg zinc, 6 mg of iron and 400 μg of vitamin A along with malaria and diarrhea treatment. NIC children (n = 785) did not receive the intervention package. At 9 and 18 months, hemoglobin (Hb), zinc, iron and vitamin A status were assessed in a sub-group (n = 404). Plasma concentrations of zinc (pZC), ferritin (pF), soluble transferrin receptor (sTfR) and retinol-binding protein (RBP) were adjusted for inflammation.

Results: At baseline, 35% of children had low adjusted pZC (<65 μg/dL), 93% were anemic (Hb <110 g/L), 25% had low adjusted pF (<12 μg/L), 90% had high adjusted sTfR (>8.3 mg/L) and 47% had low adjusted RBP (<0.94 μmol/L), with no group-wise differences. Compared with the NIC, at 18 months IC children had significantly lower anemia prevalence (74 vs. 92%, p = 0.001) and lower iron deficiency prevalence (13% vs. 32% low adjusted pF and 41% vs. 71% high adjusted sTfR, p < 0.001), but no difference in pZC. Mean adjusted RBP was greater at 18 months in IC vs. NIC (0.94 μmol/L vs. 0.86 μmol/L, p = 0.015), but the prevalence of low RBP remained high in both cohorts. Within the IC, different amounts of zinc had no effect on the prevalence of low pZC or indicators of vitamin A deficiency, whereas children who received SQ-LNS with 10 mg zinc had a significantly lower mean pF at 18 months compared to children who received SQ-LNS with 5 mg zinc (p = 0.034).

Conclusions: SQ-LNS regardless of zinc amount and source provided along with illness treatment improved indicators of iron and vitamin A status, but not pZC.

Trial registration: NCT00944281 (July 21, 2009).

Keywords: Anemia; Hemoglobin; Iron; Lipid-based nutrient supplements; Plasma zinc concentration; Retinol-binding protein; SQ-LNS; Vitamin A; Zinc.

Figures

Fig. 1
Fig. 1
Flow diagram of the biochemistry indicators for iLiNS-Zinc. 1In all groups, invited if free of confirmed fever or diarrhea during the enrollment day. 2In all groups, no sample at 18 mo either because child failed to provide biological samples or because of dropout
Fig. 2
Fig. 2
Effect of SQ-LNS combined with malaria and diarrhea treatment on % relative change in prevalence of adjusted indicators of iron deficiency and anemia from 9 to 18 month of age in rural Burkinabe children. * Significantly different between the two cohorts (p

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