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Commun Biol
April 2024
School of BioSciences, The University of Melbourne, Melbourne, Australia.
Brain Sci
November 2023
ASST Sette Laghi-Circolo e Fondazione Macchi Hospital, 21100 Varese, Italy.
Chem Biol Interact
December 2022
Department of Emergency Medicine, The Second Affiliated Hospital and Yuying Children Hospital of Wenzhou Medical University, Zhejiang, 325000, PR China; Department of Obstetrics and Gynecology, The Second Affiliated Hospital and Yuying Children Hospital of Wenzhou Medical University, Zhejiang, 325000, PR China; Key Laboratory of Structural Malformations in Children of Zhejiang Province, Wenzhou, 325000, Zhejiang Province, PR China. Electronic address:
Many environmental pollutants act as endocrine-disrupting compounds by inhibiting human placental 3β-hydroxysteroid dehydrogenase/Δ isomerase type 1 (HSD3B1) and aromatase (CYP19A1) activities. In this study, we screened 13 chemicals of environmental concern for their ability to inhibit human HSD3B1 and CYP19A1 by measuring the conversion of pregnenolone to progesterone for HSD3B1 activity and the conversion of testosterone to 17β-estradiol for CYP19A1 activity in human JEG-3 choriocarcinoma cell microsomes. HSD3B1 had an apparent Km of 0.
View Article and Find Full Text PDFEndocr Connect
December 2022
Andros Clinics, Arnhem, The Netherlands.
The purpose of androgen deprivation therapy (ADT) in prostate cancer (PCa), using luteinizing hormone-releasing hormone agonists (LHRHa) or gonadotrophin-releasing hormone antagonists, is to suppress the levels of testosterone. Since testosterone is the precursor of estradiol (E2), one of the major undesired effects of ADT is the concomitant loss of E2, causing among others an increased bone turnover and bone loss and an increased risk of osteoporosis and fractures. Therefore, the guidelines for ADT indicate to combine ADT routinely with bone-sparing agents such as bisphosphonates, denosumab or selective estrogen receptor modulators.
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