research 5α-Reductase activity in the human hair follicle concentrates in the dermal papilla
The enzyme that changes testosterone to a stronger form is mostly found in the part of the hair follicle called the dermal papilla.
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research Expression of type 1 5α-reductase and metabolism of testosterone in reconstructed human epidermis (SkinEthic®): a new model for screening skin-targeted androgen modulators
The study created a new method to test drugs that affect hormone processing in skin.
research High-performance liquid chromatographic determination of the enantiomers of the benzoquinolinone LY 191704, a human type 1 5α-reductase inhibitor, in plasma
Researchers developed a method to measure different forms of a drug that could help treat prostate issues and hair loss, and found how these forms behave in animals.
research Adverse Side Effects of 5α‐Reductase Inhibitors Therapy: Persistent Diminished Libido and Erectile Dysfunction and Depression in a Subset of Patients
Some patients taking finasteride or dutasteride may have ongoing sexual problems and depression even after stopping the medication.
research The importance of dual 5α-reductase inhibition in the treatment of male pattern hair loss: Results of a randomized placebo-controlled study of dutasteride versus finasteride
Dutasteride more effective for hair growth, but has more side effects than finasteride.
research Expression of mRNA for androgen receptor, 5alpha-reductase and 17beta-hydroxysteroid dehydrogenase in human dermal papilla cells
Hair sensitivity to androgens is partly controlled by specific enzyme expressions in different hair areas.
research Evidence for Increased 5α-Reductase Activity During Early Childhood in Daughters of Women With Polycystic Ovary Syndrome
Young girls whose mothers have PCOS may have higher activity of a specific enzyme that could lead to developing PCOS later.
research Analysis of the microRNA expression profile of normal human dermal papilla cells treated with 5α-dihydrotestosterone
DHT affects hair follicle cells by changing microRNA levels, leading to less cell growth and more cell death.
![Synthesis and Activity of 8-Substituted Benzo[c]quinolizin-3-ones as Dual Inhibitors of Human 5α-Reductases 1 and 2](/images/research/efc54340-66d6-4f27-9930-045ac023f903/small/15248.jpg)
research Synthesis and activity of 8-substituted benzo[c]quinolizin-3-ones as dual inhibitors of human 5α-reductases 1 and 2
New compounds were made that effectively block enzymes related to prostate issues and hair loss.
research Epigallocatechin Gallate-Mediated Alteration of the MicroRNA Expression Profile in 5α-Dihydrotestosterone-Treated Human Dermal Papilla Cells
Green tea component EGCG may help prevent hair loss by changing microRNA levels in certain scalp cells.
research Clinical dose ranging studies with finasteride, a type 2 5α-reductase inhibitor, in men with male pattern hair loss
Finasteride effectively treats male pattern hair loss with a 1 mg daily dose.
research Persistent erectile dysfunction in men exposed to the 5α-reductase inhibitors, finasteride, or dutasteride
Using finasteride or dutasteride may cause long-lasting erectile dysfunction.
research In Vivo Investigation in Pigs of Intestinal Absorption, Hepatobiliary Disposition, and Metabolism of the 5α-Reductase Inhibitor Finasteride and the Effects of Coadministered Ketoconazole
Ketoconazole increases finasteride's effectiveness and lifespan in the body.
research Concomitant immobilization of androgen receptors and 5α- reductase in androgenic alopecia
Anagen grow may effectively treat hair loss by blocking testosterone and reducing enzyme activity.
research Longitudinal clinical course in patients with 5α-reductase type 2 deficiency treated with testosterone and dihydrotestosterone during infancy and puberty
Testosterone and dihydrotestosterone treatments can help with penile growth in males with 5α-reductase type 2 deficiency, with dihydrotestosterone being more effective in infancy.
![Effect of C-Ring Modifications in Benzo[c]quinolizin-3-ones, New Selective Inhibitors of Human 5α-Reductase 1](/images/research/c687900f-ea40-4de1-8f0b-a5b818951b1c/small/15452.jpg)
research Effect of C-ring modifications in benzo[c]quinolizin-3-ones, new selective inhibitors of human 5α-reductase 1
Changing the C-ring structure in certain compounds can make them better at blocking a specific human enzyme.
research Kinetic analysis of LY320236: competitive inhibitor of type I and non-competitive inhibitor of type II human steroid 5α-reductase
LY320236 is a strong blocker of two enzymes that change testosterone into dihydrotestosterone and might help treat conditions related to male hormones.
research Development of a Liquid Chromatography/Mass Spectrometry-Based Inhibition Assay for the Screening of Steroid 5-α 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 5α-Reductases In Human Physiology: an Unfolding Story
We need to learn more about 5α-reductases and neuroactive steroids to safely make drugs targeting these enzymes.
research 5α-Reductases in Human Physiology: An Unfolding Story
Enzymes called 5α-reductases have many body functions and need more research to safely use inhibitors.
research FCE 28260, a new 5α-reductase inhibitor: In vitro and in vivo effects
FCE 28260 is a stronger and longer-lasting inhibitor of 5α-reductase than finasteride, which may make it a better treatment for certain medical conditions.
research Recent Advances in the Chemistry and Pharmacological Activity of New Steroidal Antiandrogens and 5α-Reductase Inhibitors
New compounds show promise for treating hair loss, enlarged prostate, and prostate cancer, with some being more effective and having different side effects than current treatments.
research 5α‐Reductase inhibitors and prostatic disease
5α-Reductase inhibitors can help treat hair loss, acne, and prostate issues by reducing DHT levels.
research Bee Venom Promotes Hair Growth in Association with Inhibiting 5α-Reductase Expression
Bee venom helps hair grow and may work better than some common treatments.
research Synthesis, Biological Evaluation and Molecular Docking of Avicequinone C Analogues as Potential Steroid 5α-Reductase Inhibitors
Certain compounds, especially those with a propionic substituent, could potentially be new treatments for hair loss and similar disorders.
research Effect of ethanol extract of plant mixture on hair regeneration in human dermal papilla cells and C57BL/6J mice
A plant mixture extract helped grow hair by boosting cell growth and growth factors while blocking a hair loss-related enzyme.
research Identification of xenobiotics interfering with 5 α -reductase (SRD5A2) activity
MK-0773 is a moderate inhibitor of the SRD5A2 enzyme.
research Azasteroids as inhibitors of testosterone 5α-reductase in mammalian skin
Certain 4-azasteroids are effective at blocking the enzyme that processes testosterone in human skin and could help treat acne, excessive hair growth, and male pattern baldness.
research 5α-reductase activity in the prostate
Blocking the enzyme 5α-reductase can shrink the prostate and help treat enlarged prostate issues.
research Effects of the anti-androgen finasteride on 5α-reduction of androgens in the presence of progesterone in human gingival fibroblasts: modulatory actions of the alkaline phosphatase inhibitor levamisole
Finasteride reduces testosterone conversion, progesterone lessens this, and levamisole enhances finasteride's effect.