Abstract:
:Enteric immunization with schistosome ova results in a diminished granulomatous response. This study explored a mechanism by which enteric immunization may decrease granuloma size. Granulomas from livers of acutely infected mice were dissociated and the dispersed cells were depleted of macrophages. As defined by a direct in vitro migration inhibition factor (MIF) assay, the macrophage-depleted cells, composed of lymphocytes and eosinophils, inhibited the migration of normal peritoneal exudate cells when exposed to soluble egg antigens. Anti-Thy 1.2 or -Lyt 1.1, but not -Lyt 2.1, treatment of these cells abrogated MIF activity. Next, mice were exposed enterically to eggs 4 weeks prior to sacrifice. Cells from granulomas isolated from these animals demonstrated no MIF activity unless treated with anti-Lyt 2.1. When granuloma cells from enterically immunized mice were mixed with those from unimmunized animals, MIF activity by the latter was abrogated. Treatment of cells from immunized mice with anti-Lyt 2.1 or -Thy 1.2, but not -Lyt 1.1 prior to mixing once again permitted MIF activity. These results suggest that the diminished granulomatous response induced by enteric immunization could be mediated by Lyt 2+ suppressor T cells. These suppressor cells may regulate the MIF activity of Lyt 1+ T lymphocytes residing within these lesions.
journal_name
Cell Immunoljournal_title
Cellular immunologyauthors
Weinstock JV,Blum AMdoi
10.1016/0008-8749(87)90227-9subject
Has Abstractpub_date
1987-09-01 00:00:00pages
452-9issue
2eissn
0008-8749issn
1090-2163pii
0008-8749(87)90227-9journal_volume
108pub_type
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