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Bacterial‐Stimulated Cytokine Production of Peripheral Mononuclear Cells From Patients of Various Periodontitis Categories
Author(s) -
Kjeldsen M.,
Holmstrup P.,
Lindemann R. A.,
Bendtzen K.
Publication year - 1995
Publication title -
journal of periodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.036
H-Index - 156
eISSN - 1943-3670
pISSN - 0022-3492
DOI - 10.1902/jop.1995.66.2.139
Subject(s) - periodontitis , peripheral blood mononuclear cell , porphyromonas gingivalis , cytokine , actinobacillus , pathogenesis , immunology , stimulation , in vitro , biology , medicine , endocrinology , biochemistry
P eriodontitis is a general term for disease categories , including juvenile periodontitis (JP), rapidly progressive periodontitis (RPP), and adult periodontitis (AP), which may or may not share a common etiology and pathogenesis. These disease categories are characterized by differences in progression of tissue destruction and differences in age group susceptibility, but not, to our knowledge, by differences in cytokine responses of inflammatory cells. The present study examined blood cell counts and interindividual variation in the ability of PBMC of patients in three different catgories of periodontitis to produce cytokines after stimulation with different oral bacterial species in vitro. The AP group had a significantly lower production of IL‐Ira when stimulated with Porphyromonas gingivalis (P.g.) and Actinobacillus actinomycetemcomitans (A.a.) ( P < 0.05). Streptococcus sanguis (S.s.) , which is associated with normal periodontal conditions, induced extremely high levels of IL‐lα and TNFα production in all groups. The RPP group had a significantly higher number of monocytes (MC) than the AP group ( P < 0.05). Additionally, JP patients had a significantly higher concentration of polymorphonuclear granulocytes compared to juvenile controls ( P < 0.05). In conclusion, IL‐lα, TNFα, or IL‐6 production by peripheral blood MC after in vitro stimulation with oral bacterial type stains may not distinguish different categories of periodontitis. The results support the hypothesis that the cytokine IL‐Ira is produced in different concentrations in the two groups: RPP and AP. Furthermore, elevated MC concentration in the RPP group compared to the AP group may be an important pathogenic feature in RPP. J Periodontol 1995; 66:139–144 .