The Loss of Estradiol by Androgen Deprivation in Prostate Cancer Patients Shows the Importance of Estrogens in Males

Author:

Coelingh Bennink Herjan J T1ORCID,Prowse Amanda2,Egberts Jan F M2ORCID,Debruyne Frans M J3ORCID,Huhtaniemi Ilpo T4ORCID,Tombal Bertrand5ORCID

Affiliation:

1. Pantarhei Bioscience , 3700 AL Zeist , The Netherlands

2. Terminal 4 Communications , 1217 SK Hilversum , The Netherlands

3. Andros Clinics , 6842 CV Arnhem , The Netherlands

4. Institute of Reproductive and Developmental Biology, Imperial College London , London SW7 2AZ , UK

5. Division of Urology, University Clinic Saint-Luc , 1200 Brussels , Belgium

Abstract

Abstract The role of estradiol (E2; an estrogen) in men needs to be more appreciated. In this review, we address the clinical situations that allow the study of the clinical consequences of E2 deficiency in men and discuss the effects of restoration of levels of this reproductive steroid hormone. In men with advanced prostate cancer (PCa) undergoing androgen deprivation therapy (ADT), E2 is suppressed along with testosterone, leading to side effects affecting the quality of life. These include hot flashes, arthralgia, fatigue, mood changes, cognition problems, weight gain, bone loss, and increased risk of cardiovascular disease. Transdermal E2 alone for ADT has shown equivalent testosterone suppression compared to gonadotropin-releasing hormone (GnRH) agonists while also preventing estrogen-deficiency side effects, including hot flashes and bone loss. Co-treatment of ADT with fetal estrogen estetrol (E4) has shown significant improvements of estrogen-deficiency symptoms. These observations emphasize the need to raise awareness of the importance of estrogens in men among clinicians and the lay public.

Publisher

The Endocrine Society

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