Induction of Metachromasia in Experimentally Induced Hyperplastic/Hypertrophic Changes in the Prostate of the Cynomolgus Monkey (Macaca Fascicularis)

AbstractMetachromasia has been shown to be a stromal marker for human benign prostatic hyperplasia (BPH). So far, it is not known whether comparable changes can be demonstrated in experimentally induced BPH in the dog or in a subhuman primate species. In the present study, the phenomenon of metachromasia could be demonstrated in the prostate of cynomolgus monkeys, too. The reaction was quantitatively intensified by the treatment with androstenedione—an aromatizable androgen which caused hyperplastic and hypertrophic changes—especially a stimulation of the smooth muscle—in the stroma of the prostate. Simultaneous treatment with the aromatase inhibitor 1-methyl-ADD prevented both the phenomenon of metachromasia and the stimulation of the stroma. In conclusion, it is not only possible to induce hyperplastic/hypertrophic changes in the prostate of a subhuman species by means of an aromatizable androgen but, in addition, this effect is accompanied by a phenomenon which is thought to be typical for human BPH su...