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| Content Provider | PubMed Central |
|---|---|
| Author | Armand, Berneman Belec, Laurent Fischetti, Vincent A. Bouvet, Jean-pierre |
| Editor | Mcghee, J. R. |
| Copyright Year | 1998 |
| Abstract | The specificity patterns of immunoglobulin G (IgG) antibodies to streptococcal antigens in serum and autologous secretions were compared in order to determine whether IgG found in human secretions is exclusively of serum origin or can also be locally produced irrespective of the systemic immune system. Surface antigens from a type 6 M-protein strain of Streptococcus pyogenes were extracted by cell wall digestion and subjected to sodium lauryl sulfate-polyacrylamide gel electrophoresis under reducing conditions. After being blotted onto nitrocellulose, the antigens were incubated with purified IgG from various body fluids: saliva, cervicovaginal secretions, seminal fluid, and colostrum. Binding was then revealed with labeled antibodies to human Fcγ fragments. The antibody specificity patterns obtained by computer-assisted analysis were compared with those of paired sera. Major variations were observed between serum and secretions, as well as between different secretions from the same subject. These results are in favor of IgG-associated local immunity within different tissue compartments. This IgG response to mucosal antigens can complement that of secretory IgA in the defense against pathogens and should be taken into account during topical vaccinations. |
| Starting Page | 4163 |
| File Format | |
| ISSN | 10985522 |
| e-ISSN | 10985522 |
| Journal | Infection and Immunity |
| Issue Number | 9 |
| Volume Number | 66 |
| Language | English |
| Publisher | American Society for Microbiology |
| Publisher Date | 1998-09-01 |
| Access Restriction | Open |
| Rights Holder | American Society for Microbiology |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Infectious Diseases Parasitology Immunology Microbiology |
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