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Effects of Diethylstilbestrol on Propionibacterium acnes Immunomodulation: Inhibition of Macrophage Activation and Antitumor Activity
Journal article   Peer reviewed

Effects of Diethylstilbestrol on Propionibacterium acnes Immunomodulation: Inhibition of Macrophage Activation and Antitumor Activity

Michael F. Ackermann, Raymond Mark, Prasanta R. Chakraborty and Page S. Morahan
Journal of leukocyte biology, v 40(5), pp 549-559
Nov 1986
PMID: 2430037

Abstract

diethylstilbestrol macrophages P. acnes
Exposure of mice to diethylstilbestrol (DES) inhibited Propionibacterium acnes‐induced antitumor activity in vivo against the B16F10 subcutaneous tumor. The inhibitory effect was associated with inhibition by DES of the characteristic P. acnes induced splenomegaly and changes in splenic and peritoneal macrophages (Mφ) cell populations. The characteristic P. acnes induced reductions in Mφ alkaline phosphodiesterase I (APD) ectoenzyme activity and in total RNA synthesis, proposed biochemical markers of tumoricidal Mφ, were partially or completely reversed in DES‐treated mice. As predicted from these in vivo and in vitro results, DES treatment significantly decreased P. acnes activation of Mφ antitumor activity in vitro against B16F10 melanoma and Lewis lung carcinoma cells. These data suggest a macrophage activation defect may be involved in the reduced resistance that DES‐treated animals exhibit to a variety of neoplastic and microbial challenges.

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Web of Science research areas
Cell Biology
Hematology
Immunology
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