research Long-Term Detection of Methyltestosterone Use by a Yeast Transactivation System
A yeast-based test can detect the steroid methyltestosterone in urine longer than traditional methods.
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research In Vivo Uptake and Metabolism of Testosterone by the Skin and Other Tissues of the Rat
Rat skin takes up and processes testosterone differently than other organs, with testosterone being more important for the skin than its metabolite 5α-DHT.
research Sulfotransferases, Sulfatases, and Formylglycine-Generating Enzymes: A Sulfation Fascination
The document concludes that understanding sulfation biology is crucial for creating treatments due to its importance in biological functions and disease.
research The Distribution of Estrogen Receptor Beta Is Distinct to That of Estrogen Receptor Alpha and the Androgen Receptor in Human Skin and the Pilosebaceous Unit
Estrogen Receptor ß (ERß) is the main hormone controller in human skin and hair follicles, not Estrogen Receptor α (ERα) or the Androgen Receptor (AR).
research Effect of the 5α-Reductase Enzyme Inhibitor Dutasteride in the Brain of Intact and Parkinsonian Mice
Dutasteride may protect the brain in early Parkinson's disease.
research Finasteride, a 5alpha-Reductase Inhibitor, Blocks the Anticonvulsant Activity of Progesterone in Mice
Finasteride, a drug, can block the seizure-preventing effects of a hormone called progesterone in mice.
research Thyroid Hormones and Androgens Differentially Regulate Gene Expression in Testes and Ovaries of Sexually Mature Silurana Tropicalis
Thyroid hormones and androgens affect gene expression in frog reproductive organs differently between males and females.
research Is The Metabolism Of Testosterone To 5α-Dihydrotestosterone Required For Androgen Action In The Skin?
Testosterone conversion to 5α-DHT may not be essential for its effects on the skin.
research Preponderance of Serum and Intra-Hepatic 5α-Dihydrotestosterone in Males with Hepatocellular Carcinoma Despite Low Circulating Androgen Levels
Men with liver cancer have higher levels of a specific testosterone byproduct in their liver and blood, despite overall lower male hormone levels.
research Preliminary Pharmacokinetics and Metabolism of Novel Non-Steroidal Antiandrogens in the Rat: Relation of Their Systemic Activity to the Formation of a Common Metabolite
Two non-steroidal antiandrogens, RU 58841 and RU 56187, form a common metabolite at different rates, which may influence their effects; RU 56187 could be used for prostate cancer treatment and RU 58841 for acne treatment.
research Progesterone-Induced Stimulation of Mammary Tumorigenesis Is Due to the Progesterone Metabolite, 5α-Dihydroprogesterone (5αP), and Can Be Suppressed by the 5α-Reductase Inhibitor, Finasteride
Progesterone byproduct 5αP stimulates mammary tumor growth, but finasteride can suppress it.
research Metabolic Study of Androsta-1,4,6-Triene-3,17-Dione in Horses Using Liquid Chromatography/High Resolution Mass Spectrometry
The study found that urine metabolites M1b or M4 are the best indicators of ATD use in horses, with detection possible up to 77 hours in urine and 28 hours in blood.
research Steroid 5α-Reductase as a Novel Therapeutic Target for Schizophrenia and Other Neuropsychiatric Disorders
S5αR inhibitors might help treat schizophrenia and other mental disorders but need more research.
research Steroid 5α-Reductase Inhibitors
New steroidal compounds could be effective for treating conditions related to 5α-reductase enzyme activity.
research Androgen Binding Profiles of Two Distinct Nuclear Androgen Receptors in Atlantic Croaker (Micropogonias Undulatus)
Different types of androgens bind differently to two receptors, AR1 and AR2, in Atlantic croaker's brain and ovarian tissues, suggesting these receptors may control different androgen actions in fish.
research 5α-Reductase Inhibitors Alter Steroid Metabolism and May Contribute to Insulin Resistance, Diabetes, Metabolic Syndrome, and Vascular Disease: A Medical Hypothesis
Some hair loss and prostate drugs might increase the risk of diabetes and heart disease.
research 3,3-Diphenylpentane Skeleton as a Steroid Skeleton Substitute: Novel Inhibitors of Human 5α-Reductase 1
A new compound effectively inhibits human 5α-reductase 1.
research Rat Steroid 5α-Reductase Kinetic Characteristics: Extreme pH-Dependency of the Type II Isozyme in Prostate and Epididymis Homogenates
The activity of a specific rat enzyme in the prostate and epididymis is highly dependent on the acidity level.
research Development of a Liquid Chromatography/Mass Spectrometry-Based Inhibition Assay for Screening Steroid 5-Alpha Reductase in Human and Fish Cell Lines
A new method was created to test the effectiveness of Dihydrotestosterone (DHT) inhibitors, like finasteride and dutasteride, in human and fish cells. The results showed fish cells are more sensitive to these treatments, and dutasteride works better than finasteride in all tested cells.
research Steroid Sulfatase: Molecular Biology, Regulation, and Inhibition
The enzyme steroid sulfatase is linked to breast cancer and other conditions, and inhibitors are being developed for treatment.
research Intratumoral De Novo Steroid Synthesis Activates Androgen Receptor in Castration-Resistant Prostate Cancer and Is Upregulated by Treatment with CYP17A1 Inhibitors
Prostate cancer cells can make their own androgens to activate the androgen receptor, and treatments like abiraterone may increase this ability, suggesting new therapies should target the entire steroid-making pathway.
research Steroid Plant Hormones: Effects Outside the Plant Kingdom
Plant steroid hormones show growth, health, and medicinal benefits in various organisms, including potential for treating diseases.
research In Vivo Time-Dependent Inhibition of Human Steroid 5α-Reductase by Finasteride
Finasteride poorly inhibits type 1 5AR, affecting its effectiveness.
research Steroid Sulfatase Inhibitors: Therapeutic Applications and Development
Steroid Sulfatase inhibitors show promise in treating hormone-dependent disorders like cancers, hair loss, and acne, with 667COUMATE being a potential candidate for breast cancer treatment trials.
research Retinoid-Mediated Stimulation of Steroid Sulfatase Activity in Myeloid Leukemic Cell Lines Requires RARα and RXR and Involves the Phosphoinositide 3-Kinase and ERK-MAP Kinase Pathways
Retinoids increase steroid sulfatase activity in leukemia cells through RARα/RXR and involves certain pathways like phosphoinositide 3-kinase and ERK-MAP kinase.
research Applications of Steroid Drugs Entrapped in Cyclodextrins
Cyclodextrins improve how steroid drugs work and are used in marketed medications and environmental applications.
research Pharmacokinetic Parameters and Mechanisms of Inhibition of Rat Type 1 and 2 Steroid 5α-Reductases: Determinants for Different In Vivo Activities of GI198745 and Finasteride in the Rat
GI198745 is more potent and longer-lasting than finasteride, potentially better for treating hair loss.
research Consequences of Steroid-5α-Reductase Deficiency and Inhibition in Vertebrates
Lack or blocking of SRD5a, a key component in hormone creation, can lead to conditions like pseudohermaphrodism and affect hair growth, bone mass, muscle strength, and reproductive health. More research is needed on its regulation from fertilization to adulthood.
research A New Label-Free Screen for Steroid 5α-Reductase Inhibitors Using LC-MS
Researchers developed a new method to find substances in herbs that can block a specific enzyme linked to hair loss.
research Steroid 5α-Reductase 2 Deficiency Leads to Reduced Dominance-Related and Impulse-Control Behaviors
Mice lacking steroid 5α-reductase 2 show less aggression and better impulse control.