Abstract
We examined the phagocytic capacity and receptor expression on neutrophils stimulated with Porphyromonas gingivalis soluble products. Stimulated neutrophils had decreased phagocytic capacities and altered expression of CR1, CR3, Fc gamma RII, and Fc gamma RIII. For cases in which TLCK (N-alpha-p-tosyl-L-lysine chloromethyl ketone) neutralized the effects of the stimuli, the P. gingivalis-derived factors causing the phenomena seem to be trypsin-like proteases.
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