The in vitro response of turkey lymphocytes to ...

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Title The in vitro response of turkey lymphocytes to steroid hormones
Author(s) P. T. Redig, J. L. Dunnette, L. Mauro, V. Sivanandan, R. J. Frederick Markham
Journal Avian Diseases
Date 1985
Volume 29
Issue 2
Start page 373
End page 383
Abstract The in vitro mitogen response of whole blood turkey lymphocytes to various concentrations of steroid hormones was evaluated. Corticosterone (COS) at concentrations between 1 and 80 ng/ml significantly suppressed the proliferative response (3H-thymidine incorporation) to phytohemagglutinin (PHA) and concanavalin A (ConA). Non-mitogen-stimulated (NMS) cells were suppressed at concentrations of COS above 5 ng/ml. Progesterone significantly suppressed NMS cells at concentrations of 80 ng/ml, PHA-stimulated cells at concentrations of 500 ng/ml, and ConA-stimulated cells at concentrations of 1000 ng/ml. beta-Estradiol enhanced the response of NMS cells at concentrations of 500 ng/ml, had no effect on PHA-stimulated cells, and suppressed the response of ConA-stimulated cells at concentrations greater than 500 ng/ml. Testosterone affected only the ConA response, causing suppression at concentrations above 2000 ng/ml. Corticosterone and progesterone caused 80 and 95% suppression, respectively, of the proliferative response to ConA when compared with non-hormone-treated cells. The possible implications of steroid hormone-induced immunosuppression in the pathogenesis of aspergillosis is discussed.

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