Endocrine Abstracts

Introduction: 3βHSD catalyses the formation of Δ4-3-ketosteroids including progesterone and androgens. Levonorgestrel (LNG) is an androgenic progestogen used in the LNG intra-uterine system (LNG-IUS). 17βHSD-5 is involved not only in androgen and oestrogen metabolism, but also has 3β-reductase activity.Objective: To determine expression patterns of 3βHSD-1 and -2, and 17βHSD-5 in human endometrium across the normal menstrual...