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This review discusses the challenges and contradictions in understanding nanoparticle penetration and toxicity in human skin, emphasizing the need for standardized testing and further research on particles smaller than 10 nm.

Finasteride effectively inhibits 5α reductase, while plant extracts like Permixon and Bazoton don't show significant results.

Nitrendipine and nifedipine effectively block muscle contractions, while papaverine relaxes them and minoxidil needs high amounts to work.

This study found that among the tested analogs, compound 4e was the most effective in inhibiting wax esters in vivo in the Golden Syrian hamster ear model.

This study found that bisindolylmaleimide PKC inhibitors increased DNA synthesis in mouse hair follicles, suggesting that PKC may inhibit hair follicle proliferation.

This study found that SZ95 sebocytes and HaCaT keratinocytes exhibit distinct enzyme expressions and activities, implicating their different roles in androgen metabolism and homeostasis in vitro.

This study found that oral administration of finasteride to pregnant rats caused dosage-related developmental toxicities, including hypospadias and decreased anogenital distance in male offspring.

This review discusses the antiviral potential of cepharanthine against SARS-CoV-2, noting its effectiveness in preclinical models but presenting no new clinical results.

This review discusses the traditional uses and pharmacologically active compounds of 22 Dendrobium species for dermatological disorders but reports no new results, highlighting the need for further research.

This study found that at least four different human sulfotransferase activities contribute to the sulfation of minoxidil, complicating predictions of individual responses based on ST levels.

This study found that finasteride decreased plasma dihydrotestosterone levels and altered steroid metabolism, similar to the profile of male pseudohermaphrodites with inherited 5a-reductase deficiency.

This study reported that certain newly synthesized steroidal derivatives showed stronger inhibitory activity against the 5α-reductase enzyme than finasteride in hamsters, suggesting their potential as enzyme inhibitors.

In this study, germacrone from Curcuma aeruginosa showed anti-androgenic effects by inhibiting 5α-reductase, suggesting its potential as a lead compound for treating androgen-dependent disorders.

This study suggests that in SZ95 sebocytes, a pathway for DHT biosynthesis does not require testosterone as an intermediate, potentially impacting the treatment of androgen-sensitive skin conditions.

This study found that nobiletin-loaded vesicles effectively restored skin condition in a mouse model of skin cancer, suggesting they are a promising treatment delivery system.

This study found that 4-MA is a potent inhibitor of testosterone 5α-reductase in human tissues, promising potential for treating androgen-dependent skin conditions like male pattern baldness.

This study found that formulating raloxifene in nano-lipid carriers significantly enhanced its permeation and cytotoxicity against cancer cells compared to raw raloxifene.

This study found that white wax and its extract may promote hair growth in a mouse model of androgenetic alopecia by inhibiting 5α-reductase activity and increasing cell proliferation, with efficacy surpassing finasteride.

This study found that Scutellaria baicalensis extract and its main component baicalin inhibited androgen activation signaling and promoted proliferation of human dermal papilla cells, suggesting potential use in treating androgen-associated disorders.

This study found that all-trans and 9-cis retinoic acids increase steroid sulfatase activity in HL60 cells through mechanisms involving RARα/RXR heterodimers and multiple signaling pathways.

This study found that minoxidil inhibited prostacyclin production in various endothelial and smooth muscle cells in culture without affecting the synthesis of other cyclooxygenase products.

This study found that Avicennia marina extract significantly inhibited 5α-reductase type 1 activity in human hair dermal papilla cells, suggesting its potential use for treating androgenic alopecia.

This study constructed a model to predict finasteride's inhibitory activity on 5α-reductase type 2 and calculated that a 1 μM plasma concentration, after 50 mg administration, matches prostate inhibition levels.

This study developed a pharmacokinetic/pharmacodynamic model for finasteride, concluding that finasteride's nonlinear pharmacokinetics are likely due to its saturable binding to 5alphaR2.

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.

This study identified 30 new compounds with significant androgen receptor binding affinity through a combination of virtual screening and in vitro testing.

This study reported that the compound (1R, 2S)-4-(2-cyano-cyclohexyl-oxy)-2-trifluoromethyl-benzonitrile effectively stimulated hair growth in mice and reduced sebum production in hamsters.

This study found that finasteride selectively inhibited UGT1A4 in vitro but is unlikely to cause clinically significant drug interactions mediated through hepatic UGT enzymes in vivo.

This review highlights the challenges in screening for steroid 5 alpha-reductase inhibitors and discusses significant variability in the effectiveness of finasteride and dutasteride, calling for standardized testing methods to develop safer, more specific inhibitors from herbal preparations.

This study reports that 4-(alkylthio)- and 4-(arylthio)-benzonitriles showed moderate sebum reduction as androgen receptor antagonists when applied topically in a validated animal model.