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- Title
Effect of a <em>Trichinellia spiralis</em> infection on the distribution of mast cell precursors in tissues of thymus-bearing and non-thymus-bearing (nude) mice determined by an <em>in vitro</em> assay.
- Authors
Parmentier, H. K.; Teppema, J. S.; Van Loveren, H.; Tas, J.; Ruitenberg, E. J.
- Abstract
The frequency of precursor cells capable of giving rise to cells with characteristics of mucosal mast cells in tissues from thymus-bearing and non-thymus-bearing (nude) mice orally infected with Trichinella spiralis was determined with an in vitro assay. Analysis of the frequency of mast cell precursors in bone marrow, blood, spleen and small intestinal tissue revealed similar frequencies of mast cell precursors in bone marrow from both thymus-bearing and athymic mice. These frequencies in bone marrow were not affected by infection. However, in blood and spleen from thymus-bearing mice at Day 7 post-infection (p.i.), and in the gut at Day 14 p.i., significant increases of mast cell precursor frequencies were detected. In contrast, no significant increase was observed in the tissues of infected nude mice. These data are in accordance with/n vivo findings, indicating that a mucosal mast cell response in the gut is both thymus and antigen dependent. It was concluded (i) that a mucosal mast cell response to infection with T. spiralis is probably due to local proliferation and maturation of residing mast cell precursors, (ii) that this response might be amplified by an influx of precursor cells from the blood into the gut, and (iii) that both phenomena are T-cell dependent.
- Subjects
TRICHINOSIS; BONE marrow; HEMATOPOIETIC system; IMMUNE system; ANTIGENS; IMMUNOGLOBULINS; ANTIGEN-antibody reactions
- Publication
Immunology, 1987, Vol 60, Issue 4, p565
- ISSN
0019-2805
- Publication type
Article