Document Detail

Antibacterial characteristics in the feces of breast-fed and formula-fed infants during the first year of life.
MedLine Citation:
PMID:  11840038     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Human milk is known to protect infants from a number of infectious diseases. Much less is known about the bioactivity of milk-derived factors in the intestine. In this study, potentially protective characteristics in the feces of breast-fed and formula-fed infants were compared. METHODS: The feces of 26 breast-fed and 18 formula-fed infants were collected during the first year of life. In each sample, the concentrations of total protein, immunoglobulin A, and sialic acid were measured. In addition, the effect of the fecal samples was measured on the adhesion of enteropathogenic Escherichia coli (EPEC) to Caco-2 cells and on transepithelial electrical resistance (TER) during an infection. RESULTS: In the first month, sialic acid and immunoglobulin A were found in the feces of breast-fed infants in substantially higher concentrations than in the feces of formula fed infants (sialic acid, 1197 +/- 370 microg/ mL versus 31 +/- 19 microg/ mL; immunoglobulin A, 0.11 +/- 7 mg/mL versus 0.3 +/- 1 mg/mL) and thereafter decreased to similar levels in half a year. Adhesion of EPEC to Caco-2 cells was inhibited between 65% and 85% by stools from both groups. The decrease of TER during EPEC infection was unaffected by fecal samples of any origin or age. CONCLUSION: Potentially protective factors are present in higher concentrations in the stools of breast-fed infants than in stools of formula-fed infants. Interestingly, feces from breast-fed and formula-fed infants inhibited bacterial adhesion to a similar level, but neither was able to preserve epithelial barrier function.
Henrik Köhler; Silke Donarski; Beate Stocks; Alison Parret; Christine Edwards; Horst Schroten
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of pediatric gastroenterology and nutrition     Volume:  34     ISSN:  0277-2116     ISO Abbreviation:  J. Pediatr. Gastroenterol. Nutr.     Publication Date:  2002 Feb 
Date Detail:
Created Date:  2002-02-12     Completed Date:  2002-06-14     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8211545     Medline TA:  J Pediatr Gastroenterol Nutr     Country:  United States    
Other Details:
Languages:  eng     Pagination:  188-93     Citation Subset:  IM    
University Children's Hospital, Düsseldorf, Germany.
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MeSH Terms
Age Factors
Bacterial Adhesion
Bottle Feeding*
Breast Feeding*
Caco-2 Cells
Electric Impedance
Escherichia coli / physiology
Feces / chemistry*
Immunoglobulin A / analysis*
Infant, Newborn
N-Acetylneuraminic Acid / analysis*
Proteins / analysis*
Reg. No./Substance:
0/Immunoglobulin A; 0/Proteins; 131-48-6/N-Acetylneuraminic Acid

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

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