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GlossaryOverexpression

production of a gene's product in unusually high amounts

Overexpression refers to the process where a gene is produced in higher-than-normal amounts within a cell. This can happen naturally or be induced artificially in a lab setting. In the context of hair and alopecia, overexpression of certain genes might lead to excessive hair growth or, conversely, contribute to hair loss if the overexpressed gene disrupts normal hair follicle function.

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Overexpression of Activin A in the Skin of Transgenic Mice Reveals New Activities in Epidermal Morphogenesis, Dermal Fibrosis, and Wound Repair

research Overexpression of Activin A in the Skin of Transgenic Mice Reveals New Activities in Epidermal Morphogenesis, Dermal Fibrosis, and Wound Repair

204 citations, October 1999 in “EMBO journal”

Overexpression of activin A in mice skin causes skin thickening, fibrosis, and improved wound healing.

research Overexpression of Smad7 Results in Severe Pathological Alterations in Multiple Epithelial Tissues

111 citations, June 2002 in “The EMBO Journal”

Too much Smad7 can cause serious changes in skin tissues, including problems with hair growth, thymus shrinkage, and eye development issues.

Overexpression of Bcl-2 Protects from Ultraviolet B-Induced Apoptosis but Promotes Hair Follicle Regression and Chemotherapy-Induced Alopecia

research Overexpression of Bcl-2 Protects from Ultraviolet B-Induced Apoptosis but Promotes Hair Follicle Regression and Chemotherapy-Induced Alopecia

47 citations, April 2000 in “The American journal of pathology”

Bcl-2 overexpression protects against UVB damage but worsens hair loss from chemotherapy.

Overexpression of Aldo-Keto Reductase 1C3 in LNCaP Cells Diverts Androgen Metabolism Towards Testosterone Resulting in Resistance to the 5α-Reductase Inhibitor Finasteride

research Overexpression of Aldo-Keto Reductase 1C3 in LNCaP Cells Diverts Androgen Metabolism Towards Testosterone Resulting in Resistance to the 5α-Reductase Inhibitor Finasteride

45 citations, May 2012 in “The Journal of Steroid Biochemistry and Molecular Biology”

Too much AKR1C3 enzyme causes resistance to finasteride by increasing testosterone.

research Overexpression of Spermidine/Spermine N1-Acetyltransferase Under the Control of Mouse Metallothionein I Promoter in Transgenic Mice: Evidence for a Striking Post-Transcriptional Regulation of Transgene Expression by a Polyamine Analogue

43 citations, February 1999 in “Biochemical Journal”

Overexpression of SSAT in mice causes hair loss, liver damage, and sensitivity to polyamine analogues.

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community Update: 4 Month progress on Fin/Min plus dermaroller

in Progress Pictures 559 upvotes 11 months ago

A user shared a 4-month update on their hair regrowth progress using finasteride, minoxidil, a dermaroller, ketoconazole shampoo, multivitamins, and biotin, and received positive reactions and inquiries from others. They also mentioned lifestyle changes such as quitting creatine, alcohol, and smoking, which may have contributed to their success.

community 3 months 5g Min only before/after, 26 y/o

in Is this regrowth? 454 upvotes 1 week ago

The user experienced significant hair regrowth after three months of using 5 mg oral minoxidil nightly and plans to add finasteride to maintain progress. Many recommend combining minoxidil with finasteride or dutasteride to prevent future hair loss.

community People who tolerate dut better than fin?

in Finasteride/Dutasteride 32 upvotes 2 months ago

Dutasteride may have fewer side effects than finasteride, with some users experiencing better hair maintenance. Experiences vary, with some preferring dutasteride for fewer side effects, while others see no significant hair improvement.

community TWIST-1 and the cure: Is it really that easy?

in Research/Science 283 upvotes 2 years ago

TWIST-1 gene's role in hair loss and potential as a treatment target. Inhibiting TWIST-1 may prolong hair growth and reduce hair follicle sensitivity to DHT.

community DHT levels after 4 weeks of Fina and 8 weeks of Fina + 4 weeks of Duta

in Update 35 upvotes 5 years ago

The user reported early stage diffuse hair thinning and increased DHT levels after 4 weeks on Finasteride and 8 weeks on Finasteride plus 4 weeks on Dutasteride, despite the medications being authentic and stored properly. They are considering increasing their Dutasteride dosage due to the lack of side effects and are unsure if the treatment is helping their hair.

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