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| Content Provider | PubMed Central |
|---|---|
| Author | Hamilton, S. R. Yardley, J. H. Brown, G. D. |
| Abstract | Cholera toxin has been shown to modulate immune responses, generally producing enhancement when administered simultaneously with antigen and suppression when administered a day or more earlier. In a previous study using chronically isolated ileal loops in rabbits, we found that two subcutaneous (s.c.) "priming" and "boosting" doses of biologically active cholera toxin suppressed the local intestinal immunoglobulin A response to intraloop doses of cholera toxin. In the study reported here, two different biologically inactive but antigenically intact cholera toxoids, glutaraldehyde toxoid and choleragenoid, where administered s.c. by the same immunization schedule as for toxin in the earlier experiment. Suppression of local immune response to intraloop cholera toxin as compared with animals receiving no s.c. inoculations was again found. The results suggest that in this model suppression was immunological (mediated by an immunological mechanism) rather than toxigenic (mediated by biological activity of cholera toxin). In addition, the occurrence of suppression of local intestinal immune response after systemic immunization suggests that suboptimal protection against enteric infections could occur after s.c. vaccination. |
| Starting Page | 422 |
| File Format | |
| ISSN | 10985522 |
| e-ISSN | 10985522 |
| Journal | Infection and Immunity |
| Issue Number | 2 |
| Volume Number | 24 |
| Language | English |
| Publisher Date | 1979-05-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Infectious Diseases Parasitology Immunology Microbiology |
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