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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

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

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 evidence of suppressor cell activity in the population of spleen mononuclear cells.[1]

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