Effect of controlled antigenic stimulation on lymphocyte subsets in pigs and pig fetuses
Language English Country United States Media print
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
9821314
DOI
10.1007/bf02820808
Knihovny.cz E-resources
- MeSH
- Adjuvants, Immunologic * MeSH
- Lymphocyte Activation * MeSH
- CD5 Antigens analysis MeSH
- CD8 Antigens analysis MeSH
- Escherichia coli immunology MeSH
- Germ-Free Life MeSH
- Immunization * MeSH
- Immunophenotyping MeSH
- Fetus MeSH
- Lymphocyte Subsets immunology MeSH
- Swine MeSH
- Flow Cytometry MeSH
- Pregnancy MeSH
- Animals MeSH
- Check Tag
- Pregnancy MeSH
- Female MeSH
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Adjuvants, Immunologic * MeSH
- CD5 Antigens MeSH
- CD8 Antigens MeSH
The effect of controlled antigenic stimulation in immunologically virgin organisms, i.e. pig fetuses treated with NDCM (Nocardia delipidated cell mitogen) and germ-free (GF) piglets associated with a non-pathogenic E. coli 086, on peripheral blood lymphocyte subsets defined by the expression of CD5 and CD8 was studied by double color flow cytometry. Stimulation of both fetuses and GF piglets increased the frequency of CD8low+ lymphocytes. A prominent subset of CD5-CD8low+NK cells was present in GF and E. coli associated piglets and their frequency was slightly higher in E. coli associated animals. The most pronounced difference between stimulated and non-stimulated animals was in a relative proportion of an ill-defined lymphocyte subset with an unusual CD5low+CD8low+ expression. Both NDCM injection into fetal blood circulation and association of GF piglets with E. coli resulted in a marked increase of frequency of CD5low+CD8low+ lymphocytes in peripheral blood.
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