83 citations
,
November 2006 in “European Journal of Neuroscience” This study found that progesterone protects rat Purkinje cells during oxygen-glucose deprivation by activating GABA A receptors through its metabolite, allopregnanolone.
41 citations
,
February 2012 in “Journal of Neuroendocrinology” This study suggests that in late pregnancy, allopregnanolone induces opioid inhibition of oxytocin secretion in response to immune challenge, potentially minimizing the risk of preterm labor in rats.
June 2010 in “Journal of Chemical Crystallography” This study determined the crystal structure and conformation of synthesized 17x-Acetoxy-pregn-4,6-diene-3,20-dione, revealing specific molecular interactions and structural details in an orthorhombic crystal system.
40 citations
,
December 2019 in “Neurobiology of Stress” This review focuses on neuroactive steroids' influence on GABA-ergic signaling and discusses challenges in developing them for various therapeutic uses, citing recent excitement from FDA approval of allopregnanolone for postpartum depression but reporting no new results.
2 citations
,
October 2001 in “Analytical Sciences” A new compound that could treat various androgen-related conditions was created and analyzed.
180 citations
,
June 2004 in “Journal of Pharmacology and Experimental Therapeutics” This study found that progesterone's antiseizure effects in mice occurred primarily through conversion to allopregnanolone, rather than through the progesterone receptor, as evidenced by results in PR knockout mice.
February 1999 in “Analytical Sciences” A new antiandrogen compound was made and its detailed three-dimensional shape was described.
76 citations
,
July 2009 in “Neuroscience” This study found that inhibiting allopregnanolone synthesis in late gestation fetal sheep increased apoptosis and dead cell count in the hippocampus and cerebellum, effects that were mitigated by alfaxalone co-infusion.
19 citations
,
June 2013 in “Journal of Neuroendocrinology” This study suggests that neurosteroids, particularly allopregnanolone, may play a crucial role in the progression and management of epilepsy, as indicated by their effects on seizure modulation in both rats and humans.
August 2002 in “Analytical Sciences” The document concludes that a compound with potential for treating prostate cancer and hair loss was successfully made and its detailed structure was confirmed.
23 citations
,
January 2001 in “Chemical & Pharmaceutical Bulletin” This study found that several synthesized pregnane derivatives exhibited significant inhibitory effects on testosterone conversion to dihydrotestosterone and reduced related androgenic parameters in multiple pharmacological models.
16 citations
,
November 2011 in “Neuroscience Letters” This study reported that progesterone reduces cell death in hippocampal cultures following oxygen–glucose deprivation mainly through its conversion to allopregnanolone and the involvement of GABAA receptors.
18 citations
,
January 2013 in “Psychoneuroendocrinology” Neonatal neurosteroid levels affect adult brain function and behavior.
10 citations
,
May 2014 in “The Journal of Steroid Biochemistry and Molecular Biology” This study found that altering neurosteroid levels during early development in male rats can influence KCC2 levels, underscoring the role of neurosteroids in hippocampal maturation.
11 citations
,
November 2009 in “Journal of steroid biochemistry and molecular biology/The Journal of steroid biochemistry and molecular biology” This study found that bolandiol increased lean body mass and bone mineral density in castrate adult male rats, exhibiting tissue selectivity and acting through multiple receptor pathways with less potency compared to other androgens.
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.
61 citations
,
January 2008 in “Biological & Pharmaceutical Bulletin” In this study, finasteride dose-dependently inhibited stress-induced increases in allopregnanolone in rats, while enhancing 20alpha-reduction of progesterone without affecting 3alpha-dihydroprogesterone or 11-deoxycorticosterone levels.
31 citations
,
November 2014 in “Investigative Ophthalmology & Visual Science” This study reported that in rat retinas under high pressure, allopregnanolone synthesis increased and helped reduce pressure-induced damage through GABAA receptors, suggesting potential therapeutic use in glaucoma.
December 2025 in “Current Issues in Molecular Biology” This study evaluated novel steroids' potential as future hormonal therapies for neuroprotection in glucose disorders, but emphasized that further research is needed to optimize androgen antagonist use in the context of COVID-19 progression.
123 citations
,
May 2009 in “Journal of Neuroscience” In this study, researchers found that in late pregnancy, the neuroactive progesterone metabolite allopregnanolone inhibits HPA axis responses to immune challenges via an opioid-mediated mechanism.
18 citations
,
September 2021 in “Journal of Neuroendocrinology” This review discusses how neurosteroids acting on GABAA receptors may influence behavior and explores the potential for developing selective modulators for treating psychiatric disorders, but reports no new clinical results.
This study found that neurosteroids influence oxytocin secretion in sheep, particularly during stress and pregnancy, suggesting their role in protecting and maintaining pregnancy under harmful conditions.
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.
8 citations
,
February 2013 in “Neuroscience Letters” This study found that pre-treatment with the neurosteroid allopregnanolone in mice reduced nicotine withdrawal symptoms, suggesting potential therapeutic benefits for nicotine dependence.
January 2010 in “Acta Universitatis Medicinalis Nanjing” This study found that progesterone increased the survival of newborn neurons and enhanced spatial learning and memory in adult male mice, independent of neuron production changes.
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.
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.
164 citations
,
January 2003 in “Drugs” 61 citations
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September 2011 in “Pain” This study observed that N-palmitoylethanolamine (PEA) may relieve pain by enhancing de novo neurosteroid synthesis, evidenced by increased allopregnanolone levels and protein expression in pain models, dependent on PPAR-α.
52 citations
,
April 2002 in “Brain Research” This study found that in rats, finasteride significantly reduced allopregnanolone in the cortex and increased both the rise and duration of dopamine levels in the prefrontal cortex in response to stress and anxiogenic stimuli.