Androstenedione and Androstandione

To be honest, this article is a little over my head. Can anyone translate this into everyday speak?

a) The pre-incubation of male foreskin fibroblasts with unlabeled androstenedione and androstandione both resulted in stimulation of 5 alpha R activity. Other unlabeled steroid hormones, including progesterone, testosterone, dihydrotestosterone, and estradiol had no significant effect on 5 alpha R activity.

ncbi.nlm.nih.gov/pubmed/8451911