Endocrinology of Primary Ovarian Insufficiency: Diagnostic and Therapeutic Clues

Background: This paper briefly reviews the most important endocrine features of primary ovarian insufficiency (POI) and shows their relevance for the diagnosis and treatment of this condition. Introduction: Endocrine disturbances in POI cause problems for both the fertility and general health status of the affected women. Both subfertility and infertility result from the depletion of growing ovarian follicles which, in its turn, is the causative factor of hypoestrogenism; this is responsible for most of the general health problems affecting women. Method: Search of literature. Results and conclusion: A combination of high-serum follicle-stimulating hormone (FSH) and low 17β-estradiol (E2) concentrations is a key feature characterizing POI and is the decisive element for POI diagnosis. However, an in-depth search for possible genetic and non-genetic causes is important for adequate counseling regarding prevention and early intervention. The treatment of general health problems, based on correcting hypoestrogenism through hormone replacement therapy (HRT), is relatively easy. On the other hand, resolving infertility is a much more difficult task, and oocyte donation is the only really efficient instrument. Fertility preservation is a suitable alternative in patients with early POI diagnosis, in whom some viable follicles are still present in the ovaries. In patients who refuse oocyte donation, intraovarian injection of autologous platelet-rich plasma and in vitro activation of dormant follicles may be considered. Other innovative treatments, such as stem cell therapies or nuclear transfer, are currently under investigation.