This study was undertaken to examine the prevalence of Actinobacillus actinomycetemcomitans, its serotype distribution and the serum immune responses against its surface antigens in 41 Japanese patients with adult periodontitis. The dominant A. actinomycetemcomitans serotype isolated was serotype c. Immunoblot analysis of 3 serotypes of A. actinomycetemcomitans‐sonicated antigens and the patient sera revealed that the reactivities with serotype c were the most frequent and that heat‐stable surface serotype‐specific antigen appeared to be immunodominanl. Elevated serum immunoglobulin G titers to extracted lipopolysaccharide and fimbriae antigen of A. actinomycetemcomitans were noted for the patient sera by enzyme‐linked immunosorbent assay. High serum immunoglobulin G tilers to the fimbriae antigen detected in patients without cultivable A. actinomycetemcomitans suggested Ihe possibilily that the clicked antibody to the antigen played a role in eliminating A. actinomycetemcomitans from the periodontal lesions.
|Oral microbiology and immunology
|Published - 1993 6月
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