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Breast milk zinc transfer and early post-natal growth among urban South Indian term infants using measures of breast milk volume and breast milk zinc concentrations.
MedLine Citation:
PMID:  22734965     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Zinc (Zn) deficiency in infancy and early childhood is of public health concern in developing countries. This study aimed to longitudinally assess Zn intake of urban South Indian term infants in the first 6 months of life using measures of breast milk (BM) volume and BM Zn concentrations and, additionally, to study the effect of BM Zn intake on infant length and weight gain. BM intake by the deuterium dilution technique, BM Zn concentration at months 1, 3 and 6, as well as serum Zn level at months 3 and 6 were assessed in 50 mother-infant pairs. BM intake significantly declined from 627 mL day(-1) at month 1 to 608 mL day(-1) at month 6 (P < 0.01). BM Zn concentration and intake significantly declined from month 1 to month 6 (P < 0.001 for both). Mean infant serum Zn level at months 3 and 6 were 93.0 ± 27.1 and 99.6 ± 30.1 µg dL(-1) , respectively. Infant BM Zn intake at months 1 and 3 was not associated with the weight and length gain between 1-3 and 3-6 months, respectively. Zn intake from BM, maternal BM Zn content and serum Zn levels were not significantly different between small-for-gestational age and appropriate-for-gestational age infants. Therefore, among urban south Indian term infants less than 6 months of age, BM Zn intakes were low, owing to low volumes of BM intake, despite BM Zn concentrations being in the normal range. Promotion of breastfeeding and thereby increasing the volumes of milk produced is a first important step towards improving Zn intake among infants.
Authors:
Tinu Mary Samuel; Tinku Thomas; Prashanth Thankachan; Swarnarekha Bhat; Suvi M Virtanen; Anura V Kurpad
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-6-27
Journal Detail:
Title:  Maternal & child nutrition     Volume:  -     ISSN:  1740-8709     ISO Abbreviation:  -     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-6-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101201025     Medline TA:  Matern Child Nutr     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2012 Blackwell Publishing Ltd.
Affiliation:
Division of Nutrition, St. John's Research Institute, Bangalore, India Department of Pediatrics, St. John's Medical College, Bangalore, India The Unit of Nutrition, National Institute for Health and Welfare, Helsinki, Finland Division of Epidemiology, School of Health Sciences, University of Tampere, Tampere, Finland.
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