Decay-accelerating factor is expressed in the human endometrium and may serve as the attachment ligand for Dr pili of Escherichia coli.
Am J Reprod Immunol
; 32(3): 194-9, 1994 Oct.
Article
in En
| MEDLINE
| ID: mdl-7533500
ABSTRACT
PROBLEM:
We evaluated the hypothesis that different tissue substructures in uteri may express decay accelerating factor (DAF), a complement regulatory protein that also may serve as ligand for bacterial attachment.METHOD:
Purified Dr pili, anti-Dr pili IgG, anti-DAF (SCR-3) IgG, and fluorescein-isothiocyanate-conjugated secondary IgG were used for binding and inhibition experiments.RESULT:
We observed staining of endometrial glands, spiral arterioles, and myometrial arteries with Dr adhesin (pili) and anti-DAF (SCR-3) IgG, and found variation in distribution and amount of Dr ligands in different individuals. Anti-DAF (SCR-3) IgG blocked the binding of Dr pili to the endometrium.CONCLUSION:
Presence of DAF in endometrium may protect tissues from complement-induced damage. Differences between individuals in DAF density in the endometrium may affect sensitivity to attachment of Dr-bearing E. coli and/or complement activation.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Membrane Glycoproteins
/
Antigens, CD
/
Fimbriae, Bacterial
/
Endometrium
/
Escherichia coli
Limits:
Female
/
Humans
Language:
En
Journal:
Am J Reprod Immunol
Year:
1994
Document type:
Article