Document Detail

Lower proportion of CD45R0+ cells and deficient interleukin-10 production by formula-fed infants, compared with human-fed, is corrected with supplementation of long-chain polyunsaturated fatty acids.
MedLine Citation:
PMID:  10997375     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: The immune consequences of adding 20:4n-6 and 22:6n-3 fatty acids to preterm infant formula are not known. METHODS: The effect of feeding preterm infants (14-42 days of age) human milk (Human Milk group), infant formula (Formula group), or formula with added long-chain polyunsaturated fatty acids 20:4n-6 and 22:6n-3 (Formula + LCP group) on isolated peripheral blood lymphocytes (by flow cytometry) and lipid composition (by gas-liquid chromatography) was determined. Lymphocytes were stimulated in vitro with phytohemagglutinin to measure soluble interleukin (sIL)-2R and IL-10 production (by enzyme-linked immunosorbent assay). RESULTS: With age, the percentage of CD3+ CD4+ T cells and the percentage of CD20+ cells increased in the Human Milk and Formula + LCP groups (P < 0.05), but not in the unsupplemented Formula group. Compared with the Formula group, CD4+ cells from the Formula + LCP and Human Milk groups expressed more CD45R0 (antigen mature) and less CD45RA (antigen naive) at 42 days of age (P < 0.05). At 42 days, IL-10 production was lower (P < 0.05) in cells of the Formula group than in cells of the Human Milk group. Production of IL-10 by the cells of the Formula + LCP group was not different from that produced by the Human Milk group cells. An age-related decrease (P < 0.05) in sIL-2R production by Formula + LCP lymphocytes was observed, but sIL-2R production at 42 days in the Formula + LCP group did not differ significantly from that in the Human Milk group. Compared with Formula alone, adding LCP to formula resulted in a lower C18:2n-6 and higher C20:4n-6 content in lymphocyte phospholipids (P < 0.05). CONCLUSIONS: Adding LCP to a preterm infant formula resulted in lymphocyte populations, phospholipid composition, cytokine production, and antigen maturity that are more consistent with that in human milk-fed infants. This may affect the ability of the infant to respond to immune challenges.
C J Field; C A Thomson; J E Van Aerde; A Parrott; A Euler; E Lien; M T Clandinin
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Publication Detail:
Type:  Clinical Trial; Comparative Study; Controlled Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of pediatric gastroenterology and nutrition     Volume:  31     ISSN:  0277-2116     ISO Abbreviation:  J. Pediatr. Gastroenterol. Nutr.     Publication Date:  2000 Sep 
Date Detail:
Created Date:  2000-12-20     Completed Date:  2001-09-27     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8211545     Medline TA:  J Pediatr Gastroenterol Nutr     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  291-9     Citation Subset:  IM    
Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Canada.
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MeSH Terms
Age Factors
Antigens, CD45 / blood*
Chromatography, Gas
Dietary Supplements
Enzyme-Linked Immunosorbent Assay
Fatty Acids, Unsaturated / administration & dosage*,  blood
Flow Cytometry
Gestational Age
Infant Food*
Infant, Newborn
Infant, Premature / immunology*
Interleukin-10 / biosynthesis*
Leukocyte Count
Lipids / blood
Lymphocyte Activation
Lymphocytes / chemistry,  immunology*
Milk, Human / immunology*
Reg. No./Substance:
0/Fatty Acids, Unsaturated; 0/Lipids; 130068-27-8/Interleukin-10; EC, CD45

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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