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2016 ; 8
(ä): 30936
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Major neutrophil functions subverted by Porphyromonas gingivalis
#MMPMID26993626
Olsen I
; Hajishengallis G
J Oral Microbiol
2016[]; 8
(ä): 30936
PMID26993626
show ga
Polymorphonuclear leukocytes (neutrophils) constitute an integrated component of
the innate host defense in the gingival sulcus/periodontal pocket. However, the
keystone periodontal pathogen Porphyromonas gingivalis has in the course of
evolution developed a number of capacities to subvert this defense to its own
advantage. The present review describes the major mechanisms that P. gingivalis
uses to subvert neutrophil homeostasis, such as impaired recruitment and
chemotaxis, resistance to granule-derived antimicrobial agents and to the
oxidative burst, inhibition of phagocytic killing while promoting a nutritionally
favorable inflammatory response, and delay of neutrophil apoptosis. Studies in
animal models have shown that at least some of these mechanisms promote the
dysbiotic transformation of the periodontal polymicrobial community, thereby
leading to inflammation and bone loss. It is apparent that neutrophil-P.
gingivalis interactions and subversion of innate immunity are key contributing
factors to the pathogenesis of periodontal disease.