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Degradation of human secretory immunoglobulin A by protease isolated from the anaerobic periodontopathogenic bacterium, Bacteroides gingivalis.

Abstract：

:This bacterium is implicated in periodontal diseases of human adult type. Secretory immunoglobulin A (IgA) purified from human colostrum (HC-IgA) was incubated with Bacteroides gingivalis cells or protease isolated from the culture supernatant of B. gingivalis; the digestion of IgA was determined by immunoelectrophoresis and sodium dodecyl sulphate-polyacrylamide gel electrophoresis. B. gingivalis cells almost completely degraded HC-IgA; protease isolated from the culture supernatant cleaved both HC-IgA and secretory IgA in human parotid saliva. Thus by degradation of IgA, the protease may mediate in part the periodontopathogenic role of B. gingivalis by decreasing the oral defence mechanism.

journal_name

Arch Oral Biol

journal_title

Archives of oral biology

authors

Sato M,Otsuka M,Maehara R,Endo J,Nakamura R

doi

10.1016/0003-9969(87)90016-1

subject

Has Abstract

pub_date

1987-01-01 00:00:00

pages

235-8

issue

4

eissn

0003-9969

issn

1879-1506

journal_volume

32

pub_type

杂志文章

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