Skin allografts generate an enhanced production of histamine and histamine-producing cell-stimulating factor (HCSF) by spleen cells in response to T cell mitogens.

M. Dy,B. Lebel

Published 1983 in Journal of Immunology

ABSTRACT

In response to T cell mitogens, spleen cells produce a large amount of histamine, whereas no or a slight increase is observed after B cell mitogen stimulation. This increased histamine production results from the effect of a factor having all the characteristics of HCSF (histamine-producing cell-stimulating factor) already described in secondary MLC supernatant. This factor is produced by Thy-1, 2, Lyt-1, 2-positive cells. Spleen cell cultures derived from skin-allografted mice during rejection produce more histamine in response to T cell mitogens than do spleen cells from normal or syngeneic grafted mice. Such a phenomenon is not observed in response to B cell mitogens. A striking association is found between enhanced histamine synthesis and skin allograft rejection. This phenomenon results from a) a five to 10-fold increase in HCSF production by allograft recipient spleen cells in response to T cell mitogens, and b) an increase in HCSF sensitivity of these spleen cells.

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