Abstract:
:Serum antibodies to glucosyltransferase (GTF) of Streptococcus mutans serotype c were assayed sequentially by means of an enzyme inhibition radio-assay in twenty-six Rhesus monkeys immunized with S. mutans. Pre-immune and control sera had a GTP-enhancing effect which was shown also by albumin and non-immune immunoglobulin fractions. GTF-inhibitory activity was found in IgG fractions from some immune sera and could be absorbed by S. mutans cells possessing cell-bound GTF. Inhibitory antibodies to GTF developed in the sera of four monkeys immunized with hydroxylapatite extract of culture supernatant (HACS), and in four out of fifteen monkeys immunized with S. mutans cells, but in none of the seven sham-immunized control animals. The monkeys immunized with HACS showed no reduction in caries. A correlation has been demonstrated between protection against caries and the early development of serum IgG antibodies to antigens present in HACS but there was no consistent association between protection against caries and GTF-inhibitory antibodies. The results also suggest the possibility that other antibodies, possibly present in the IgM or IgA fractions and having an enhancing effect on GTF, may increase the incidence of caries.
journal_name
Immunologyjournal_title
Immunologyauthors
Russell MW,Challacombe SJ,Lehner Tsubject
Has Abstractpub_date
1976-05-01 00:00:00pages
619-27issue
5eissn
0019-2805issn
1365-2567journal_volume
30pub_type
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