PMID- 15174779 OWN - NLM STAT- MEDLINE DCOM- 20041021 LR - 20190823 IS - 0803-5253 (Print) IS - 0803-5253 (Linking) VI - 93 IP - 5 DP - 2004 May TI - Zinc supplementation for four months does not affect plasma copper concentration in infants. PG - 599-602 AB - AIM: The aim of the present study, which was undertaken as a sub-study within a randomized controlled trial of zinc supplementation, was to evaluate the effect of prolonged zinc supplementation on copper status as assessed by hematological markers. METHODS: Plasma copper and zinc were estimated at baseline and after 120 d of supplementation in a randomly selected infant subset (115) of the children. Of these, 61 children were in a zinc group (Z) getting 10 mg of elemental zinc, and 54 were in a control group (C) getting supplement without zinc. RESULTS: Baseline plasma zinc was comparable in the two groups; post-supplementation zinc was significantly higher (Z 93.0 +/- 3.6 vs C 60.6 +/- 8.0) in the zinc supplementation group. There was no significant difference in the mean/median copper levels between the zinc and control groups. The percentage of children with plasma copper <100 microg/dl was also not significantly different between groups (baseline Z 14.8%, C 11.1%; post-supplementation Z 18.0%, C 11.1%). There were no differences between the zinc and control groups after 120 d of supplementation in hemoglobin (Hgb), mean corpuscular volume (MCV), mean corpuscular hemoglobin concentration (MCHC), or number of lymphocytes or granulocytes. CONCLUSION: Zinc supplementation of 10 mg/d for 4 mo in this study did not affect copper status, as assessed by plasma copper concentration and hematological parameters, diagnostics of copper deficiency. FAU - Sazawal, S AU - Sazawal S AD - Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA. ssazawal@jhsph.edu FAU - Malik, P AU - Malik P FAU - Jalla, S AU - Jalla S FAU - Krebs, N AU - Krebs N FAU - Bhan, M K AU - Bhan MK FAU - Black, R E AU - Black RE LA - eng PT - Clinical Trial PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Research Support, U.S. Gov't, P.H.S. PL - Norway TA - Acta Paediatr JT - Acta paediatrica (Oslo, Norway : 1992) JID - 9205968 RN - 0 (Hemoglobins) RN - 789U1901C5 (Copper) RN - J41CSQ7QDS (Zinc) SB - IM MH - Copper/*blood MH - *Dietary Supplements MH - Female MH - Hemoglobins/analysis MH - Humans MH - Infant MH - Male MH - Time Factors MH - Zinc/*administration & dosage/blood EDAT- 2004/06/04 05:00 MHDA- 2004/10/22 09:00 CRDT- 2004/06/04 05:00 PHST- 2004/06/04 05:00 [pubmed] PHST- 2004/10/22 09:00 [medline] PHST- 2004/06/04 05:00 [entrez] AID - 10.1111/j.1651-2227.2004.tb18254.x [doi] PST - ppublish SO - Acta Paediatr. 2004 May;93(5):599-602. doi: 10.1111/j.1651-2227.2004.tb18254.x.