Abstract：
:When spleen cells of C57BL/6 mice or mast cell-deficient W/Wv mice were cultured, their histidine decarboxylase (HDC) activity increased with increases in the histamine concentration in the cells and the medium. Addition of concanavalin A (Con A) or Escherichia coli lipopolysaccharide (LPS) enhanced the increase. The removal of adherent cells reduced both the control HDC activity and the response to the mitogens. Purified T lymphocytes responded to Con A but not to LPS. Neither Con A nor LPS had any effect on B lymphocytes. Treatment of T cells with anti-Thy-1.2 and complement completely abrogated the induction of HDC. Histamine synthesis dependent on Con A by T cells was stimulated by the addition of conditioned medium from peritoneal adherent cells activated with LPS. The addition of recombinant interleukin-1 (rIL-1) or peritoneal adherent cells fixed with paraformaldehyde significantly enhanced HDC induction dependent on Con A in T cells. These results suggest that histamine is synthesized by T lymphocytes through HDC and that the reaction was enhanced by a soluble factor(s) released from macrophages.
journal_name
Immunologyjournal_title
Immunologyauthors
Aoi R,Nakashima I,Kitamura Y,Asai H,Nakano Ksubject
Has Abstractpub_date
1989-02-01 00:00:00pages
219-23issue
2eissn
0019-2805issn
1365-2567journal_volume
66pub_type
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