June 2020 in “Research Square (Research Square)” This study found that oral contraceptives containing cyproterone acetate significantly improved the overall quality of life in polycystic ovary syndrome patients after six months, compared to those containing levonorgestrel.
March 2001 in “Clinical Obstetrics & Gynecology” This paper is a quiz on contraceptive knowledge and reports no new research findings.
January 1978 in “Enlighten: Theses (The University of Glasgow)” This study investigated various compounds inhibiting testosterone 5alpha-reductase for potential treatment of benign prostatic hyperplasia, finding that heparin and progesterone demonstrated inhibitory effects under specific conditions.
164 citations
,
January 2003 in “Drugs”
10 citations
,
January 2015 in “Przeglad Menopauzalny” This review discusses the effects and selection criteria of different progestogens in various treatments but reports no direct clinical comparisons of their metabolic effects.
22 citations
,
January 2001 in “Chemical & Pharmaceutical Bulletin” This study found that two new progesterone derivatives showed higher antiandrogenic effects and 5α-reductase inhibition than finasteride in hamsters, particularly reducing seminal vesicle weight and flank organ size.
6 citations
,
April 2004 in “Journal of Enzyme Inhibition and Medicinal Chemistry” This study found that four new progesterone derivatives reduced prostate weight in gonadectomized hamsters, suggesting potent in vivo antiandrogenic effects similar to finasteride.
13 citations
,
January 2005 in “Chemical and Pharmaceutical Bulletin” This study reported that newly synthesized progesterone derivatives significantly reduced prostate weight in testosterone-treated hamsters, with 5alpha-reductase inhibitory activity dependent on the size of the substituent at C-17.
19 citations
,
March 2010 in “Steroids” This study found that specific steroids, particularly 5 and 7b, decreased growth of prostate and seminal vesicles and bound to the androgen receptor, showing comparable pharmacological activity to finasteride.
20 citations
,
January 2003 in “Chemical and Pharmaceutical Bulletin” This study reports that five new progesterone derivatives demonstrated inhibitory activity against the 5α-reductase enzyme and binding affinity for the androgen receptor in an in vitro hamster model.
44 citations
,
February 2009 in “Pain” This study found that progesterone can inhibit spinal reflex potentiation in ovariectomized rats through GABA(A) receptor activity, mediated by neurosteroid metabolism rather than direct progesterone receptor action.
15 citations
,
April 2008 in “Steroids” This study found that pregnane derivatives with higher lipophilicity, like compound 9d, had stronger androgen receptor binding and greater antiandrogenic effects in rats, correlating relative binding affinity with log P values.
11 citations
,
May 2022 in “World Journal of Biological Chemistry” This review discusses potential benefits of adding bioidentical progesterone to gender-affirming treatment for trans women and reports no new clinical results; it calls for further research to confirm efficacy and safety.
January 2006 in “Benzina: Revista d'excepcions culturals” This study observed that new trienone compounds consistently showed higher 5alpha-reductase inhibitory activity compared to corresponding dienones across various biological models.
2 citations
,
January 2019 Hormonal contraceptives and therapies regulate organ functions and treat various conditions.
14 citations
,
April 2005 in “African Journal of Reproductive Health” This article reviews non-biodegradable progestational subdermal implants as long-acting contraceptives for women, discussing their effectiveness, associated side effects, and implementation challenges without reporting new clinical results.
21 citations
,
January 2015 in “The Journal of Steroid Biochemistry and Molecular Biology” In this study, researchers demonstrated that in a mouse model, the stimulation of mammary tumor growth due to progesterone is primarily caused by its metabolite, 5αP, not progesterone itself.
48 citations
,
February 1999 in “PubMed” This study found that the anticonvulsant effects of progesterone against PTZ-induced seizures in mice require conversion to allopregnanolone, as shown by the reversal of these effects with a 5alpha-reductase inhibitor.
64 citations
,
January 1998 in “Drugs” In this study, oral dienogest combined with ethinylestradiol provided effective contraception with a Pearl Index of approximately 0.2 and improved androgenic symptoms without significant metabolic effects.
This article reviews the contraceptive agent Depo-Provera, discussing its effectiveness, potential side effects, and safety concerns, but reports no new clinical results.
June 2014 in “Belarusian State Pedagogical University repository (Belarusian State Pedagogical University)” In this study, progesterone showed anticonvulsant effects in mice via a mechanism that is at least partially independent of its metabolism to THP, without significant psychotoxicity.
21 citations
,
February 2005 in “Epilepsy & Behavior” The researchers reported that metabolism of progesterone to 3α,5α-THP in the hippocampus is important for its antiseizure effects in ovariectomized rats.
35 citations
,
January 2005 in “Brain Research” This study indicates that progesterone’s anesthetic activity in PR knockout mice is not due to progesterone receptors but is partially mediated by the neurosteroid allopregnanolone through GABAA receptor potentiation.
November 2014 in “Clinical Neurophysiology” High doses of progesterone can reduce seizures in mice.
31 citations
,
January 2008 in “Gynecological endocrinology” In this study, two different estroprogestin treatments significantly improved skin conditions and decreased androgen levels in hyperandrogenic women, with EE/DRSP showing more pronounced hormonal changes and skin improvements compared to EE/CMA.
2 citations
,
October 1988 in “Steroids” This study found that in non-obese women with moderate body hair growth, DHEA-S and prolactin levels were higher, and SBP was lower compared to controls, which may inform treatment decisions.
January 2020 in “Nihon Yakuri Gakkai nenkai yoshishu” This study suggests that 5α-reductase-mediated metabolism of progesterone contributes to the differentiation of endometrial stromal cells, potentially influencing progesterone levels and promoting cell differentiation.
1 citations
,
January 2013 in “UNICA IRIS Institutional Research Information System (University of Cagliari)” This study found that chronic treatment with EE/LNG in female rats decreased brain concentrations of allopregnanolone, leading to reduced social and sexual behaviors; progesterone administration reversed these effects, except when finasteride was used to block the increase.
This study suggests that 5alpha-dihydroprogesterone could be an effective, non-sedative anticonvulsant for drug-resistant complex partial seizures, as observed in a rat model.