T Shimada, N Sugano, R Nishihara, K Suzuki, H Tanaka, K Ito
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引用次数: 26
Abstract
Introduction: We investigated gingival epithelial cell proliferation and expression of interleukin-8 (IL-8) and intercellular adhesion molecule 1 (ICAM-1) in response to Aggregatibacter actinomycetemcomitans serotypes a, b, and c.
Methods: Human gingival cells (Ca9-22) were cultured in bacterial extracts prepared from five strains of A. actinomycetemcomitans: ATCC 43717 (serotype a); ATCC 29524, ATCC 29522, and ATCC 43718 (all serotype b); and ATCC 43719 (serotype c).
Results: In bacterial extracts of ATCC 29522, cell growth was significantly impaired, while the expression of IL-8 and ICAM-1 was significantly increased. The level of induction in response to the other strains was minimal.
Conclusion: Our results indicate that the five strains of A. actinomycetemcomitans have distinct effects on the abilities of human gingival epithelial cells to proliferate and to produce proinflammatory factors.