α1,2-Fucosyllactose Does Not Improve Intestinal Function or Prevent Escherichia coli F18 Diarrhea in Newborn Pigs.

Abstract:

OBJECTIVES:Infectious diarrhea, a leading cause of morbidity and deaths, is less prevalent in breastfed infants compared with infants fed infant formula. The dominant human milk oligosaccharide (HMO), α-1,2-fucosyllactose (2'-FL), has structural homology to bacterial adhesion sites in the intestine and may in part explain the protective effects of human milk. We hypothesized that 2'-FL prevents diarrhea via competitive inhibition of pathogen adhesion in a pig model for sensitive newborn infants. METHODS:Intestinal cell studies were coupled with studies on cesarean-delivered newborn pigs (n = 24) without (control) or with inoculation of enterotoxigenic Escherichia coli F18 (7.5 × 10/day for 8 days) fed either no (F18) or 10 g/L 2'-FL (2FL-F18). RESULTS:In vitro studies revealed decreased pathogen adhesion to intestinal epithelial cells with 2'-FL (5 g/L; P < 0.001). F18 pigs showed more diarrhea than control pigs (P < 0.01). Administration of 2'-FL to F18 pigs failed to prevent diarrhea, although the relative weight loss tended to be reduced (-19 vs -124 g/kg, P = 0.12), higher villi were observed in the distal small intestine (P < 0.05), and a trend toward increased proportion of mucosa and activities of some brush border enzymes in the proximal small intestine. In situ abundance of α-1,2-fucose and E coli was similar between groups, whereas sequencing showed higher abundance of Enterobacteriaceae in F18, Enterococcus in control and Lachnospiraceae in 2FL-F18 pigs. CONCLUSIONS:2'-FL inhibited in vitro adhesion of E coli F18 to epithelial cells, but had limited effects on diarrhea and mucosal health in newborn pigs challenged with E coli F18.

authors

Cilieborg MS,Sangild PT,Jensen ML,Østergaard MV,Christensen L,Rasmussen SO,Mørbak AL,Jørgensen CB,Bering SB

doi

10.1097/MPG.0000000000001276

subject

Has Abstract

pub_date

2017-02-01 00:00:00

pages

310-318

issue

2

eissn

0277-2116

issn

1536-4801

journal_volume

64

pub_type

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