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  • Title: Antibody reactive with Porphyromonas gingivalis hemagglutinin in chronic and generalized aggressive periodontitis.
    Author: Califano JV, Chou D, Lewis JP, Rogers JD, Best AM, Schenkein HA.
    Journal: J Periodontal Res; 2004 Aug; 39(4):263-8. PubMed ID: 15206920.
    Abstract:
    BACKGROUND: Porphyromonas gingivalis, a black-pigmented, gram-negative anaerobe, is found in periodontitis lesions and its presence in subgingival plaque significantly increases the risk for periodontitis. We have previously shown that patients with aggressive forms of periodontitis that are seropositive for P. gingivalis have less attachment loss than those that are seronegative. This suggests that antibody reactive with antigens of P. gingivalis may be protective and decrease disease severity and extent. Recent studies in the murine abscess model and in the host antibody response in chronic periodontitis patients suggest that antibody reactive with P. gingivalis hemagglutinin may be an important protective antibody response. OBJECTIVES: In this study, we tested the hypothesis that there was a significant relationship between antibody reactive with P. gingivalis hemagglutinin and measures of periodontal attachment loss. METHODS: We determined the immunoglobulin G (IgG) antibody concentration reactive with recombinant P. gingivalis hemagglutinin in 117 chronic periodontitis and 90 generalized aggressive periodontitis patients. We also determined the IgG subclass distribution for antibody reactive with P. gingivalis hemagglutinin. RESULTS AND CONCLUSIONS: We found IgG reactive with P. gingivalis hemagglutinin in both chronic periodontitis and generalized aggressive periodontitis patients. Most of this IgG antibody was of the IgG1 and IgG3 subclasses. Antibody reactive with P. gingivalis hemagglutinin, however, did not have a significant relationship with measures of periodontal attachment loss.
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