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P fimbriae and other adhesins enhance intestinal persistence of Escherichia coli in early infancy
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P fimbriae and other adhesins enhance intestinal persistence of Escherichia coli in early infancy
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Journal Article
P fimbriae and other adhesins enhance intestinal persistence of Escherichia coli in early infancy
1998
Overview
Resident and transient Escherichia coli strains were identified
in the rectal flora of 22 Pakistani
infants followed from birth to 6 months of age. All strains were tested
for O-antigen
expression, adhesin specificity (P fimbriae, other mannose-resistant adhesins
or type 1 fimbriae)
and adherence to the colonic cell line HT-29. Resident strains displayed
higher mannose-
resistant adherence to HT-29 cells, and expressed P fimbriae (P=0·0036)
as well as other
mannose-resistant adhesins (P=0·012) more often than transient
strains. In strains acquired
during the first month of life, P fimbriae were 12 times more frequent
in resident than in
transient strains (P=0·0006). The O-antigen distribution
did not differ between resident and
transient strains, and none of the resident P-fimbriated strains belonged
to previously
recognized uropathogenic clones. The results suggest that adhesins mediating
adherence to
intestinal epithelial cells, especially P fimbriae, enhance the persistence
of E. coli in the large
intestine of infants.
Publisher
Cambridge University Press
Subject
/ Adhesins, Escherichia coli - physiology
/ analysis
/ Bacteria
/ Biological and medical sciences
/ Escherichia coli - physiology
/ Fimbriae
/ Fimbriae, Bacterial - physiology
/ Flora
/ Folkhälsovetenskap, global hälsa och socialmedicin
/ Fundamental and applied biological sciences. Psychology
/ Humans
/ Infant
/ Infants
/ Microbiology in the Medical Area
/ Mikrobiologi inom det medicinska området
/ Newborn
/ Public Health, Global Health and Social Medicine
/ Rectum
