PMID: 6982978Oct 1, 1982Paper

Effects of diethylstilbestrol and estramustine phosphate (Estracyt) on lymphoid cell populations and mitogen responsiveness in male mice

The Journal of Urology
S A Haukaas, T Kalland

Abstract

Concentrations of diethylstilbestrol phosphate (DES-P) and estramustine phosphate (EMP) above 10(-5) M in cultures of spleen lymphocytes from adult male mice resulted in a dose related inhibition of both Con A and LPS induced lymphocyte proliferation. Male mice injected with 5.6 mg./kg. DES daily for 7 days had a significantly reduced responsiveness to both Con A and LPS compared to mice injected with olive oil only. Spleen lymphocytes from male mice treated with 100 mg./kg. EMP showed a reduction of Con A induced mitogenesis whereas they exhibited a significantly enhanced response to LPS. The effects of DES and EMP on Con A and LPS induced blastogenesis were abolished within 2 weeks after cessation of treatment. DES treatment resulted in preferential depletion of splenic and lymph node T lymphocytes and a disproportionate T lymphocyte subpopulation with respect to Ly subclasses. Exposure to 30 or 100 mg./kg. EMP resulted in a dose related loss of mononuclear cells both in spleen and lymph nodes. T lymphocytes predominantly of the Ly 1 phenotype were most sensitive to EMP. Co-cultures of spleen lymphocytes from normal mice and Mitomycin C blocked spleen cells from either normal of treated mice (DES or EMP) gave no convincing ev...Continue Reading

References

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