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Glossary hair cell differentiation

process where cells become specialized to form hair structures

Hair cell differentiation is the process by which unspecialized cells develop into specialized hair cells, which are responsible for producing hair. This involves a series of genetic and biochemical changes that enable these cells to form the structures necessary for hair growth, such as the hair shaft and follicle. Understanding this process is crucial for developing treatments for hair loss conditions like alopecia.

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Research

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research A counter gradient of Activin A and follistatin instructs the timing of hair cell differentiation in the murine cochlea

15 citations , June 2019 in “eLife”

This study identified Activin A and follistatin as key regulators of hair cell differentiation in the mammalian auditory sensory epithelium, with Activin A signaling influencing the timing and pattern of cell differentiation.

research In vitro Differentiation of Adipose-Derived Stem Cells into Hair Cell-Like Cells in Guinea Pigs

3 citations , December 2007 in “Journal of Otology”

This study found that adipose-derived stem cells from adult guinea pigs can differentiate into hair cell-like cells in vitro, suggesting potential use in tissue engineering.

research A Low Dose of Rapamycin Promotes Hair Cell Differentiation by Enriching SOX2+ Progenitors in the Neonatal Mouse Inner Ear Organoids.

March 2024 in “PubMed”

This study reported that rapamycin reduced murine cochlear organoid proliferation depending on concentration, but at a 10-nM dose, it significantly increased hair cell differentiation by enriching SOX2+ progenitors while suppressing cells lacking Sox2 at early proliferation stages.

research Faculty Opinions recommendation of A counter gradient of Activin A and follistatin instructs the timing of hair cell differentiation in the murine cochlea.

July 2019 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature”

Activin A speeds up ear hair cell differentiation, while Follistatin slows it down.

research Author response: A counter gradient of Activin A and follistatin instructs the timing of hair cell differentiation in the murine cochlea

May 2019

This study identified Activin A and its antagonist follistatin as crucial regulators of hair cell differentiation in mice, suggesting a local gradient of Activin A influences auditory sensory epithelium development.

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community NMN Promotes Cell Proliferation and Hair Growth by Reducing Oxidative Stress

14 upvotes 2 years ago

NMN shows promise in promoting hair growth by reducing oxidative stress and weakening androgens. It may be a beneficial addition to hair loss treatments like Minoxidil and Finasteride.

community Minoxidil Response Bottlenecks: Why Sulfation and Transport Matter (And Where Tretinoin Fits In)

in Research 461 upvotes 1 year ago

Minoxidil's effectiveness is limited by the need for sulfation and proper transport to hair follicles, with tretinoin potentially enhancing its effects by promoting enzyme activity and keratinocyte differentiation. Tretinoin may improve minoxidil's response by boosting the expression of necessary enzymes and transporters.

community New Hair Loss Cure: AMP-303 Is Back. It’s what PP405 should have been.

7 upvotes 5 months ago

AMP-303 and AMP-601 are new hair loss treatments targeting dermal papilla cells, with AMP-303 showing early efficacy in transitioning vellus hairs to terminal hairs after one injection. Further clinical trials are planned, and these treatments are seen as promising due to their biologic approach and less frequent application compared to daily treatments.

community A stress hormone has been found to signal through skin cells to repress the activation of hair-follicle stem cells in mice

30 upvotes 5 years ago

Stress can lead to hair loss by affecting hair-follicle stem cells, and this loss is harder to recover from if one has male pattern baldness (MPB). Treatments like finasteride and minoxidil are used to address hair loss, but stress-related hair loss differs from androgenic alopecia.

community Tazarotene shows strong standalone hair regrowth potential, not just a Minoxidil enhancer. Backed by VEGF, HF regeneration, and angiogenesis pathways. Here’s why.

135 upvotes 1 year ago

Tazarotene shows potential as a standalone treatment for hair regrowth by stimulating new hair follicle formation and promoting angiogenesis, similar to microneedling effects. It can be used topically without minoxidil, but users should start with a low concentration to avoid irritation.

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Learn

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learn Thymosin Beta 4

learn Tretinoin

Vitamin A retinoid cream, prescribed for acne

learn Stem Cell Factor

Does stem cell factor help activate dormant hair follicles? Lab and mouse studies link stem cell factor to hair colour; it has not been shown to reactivate dormant hair follicles in people.
What is stem cell factor and why is it used in hair growth treatments? Stem cell factor is a signalling protein linked to hair colour in lab and mouse studies; it is not a proven hair-loss treatment in people.
Is there evidence that stem cell factor treatments visibly improve hair, and how long would it take? There is no clinical evidence that stem cell factor treatments improve hair; if any effect exists, it could not be judged before 3 to 6 months.
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learn Hair Transplant

Can a hair transplant be combined with other treatments? Clinics commonly say a transplant is combined with other treatments, most often minoxidil, finasteride or PRP, but the evidence behind each add-on differs. Some of the add-ons offered, such as stem-cell or exosome products, are not approved treatments for hair loss.

learn Hair Multiplication

extract, clone, and reinsert your own hair cells

learn Exosomes

Tiny cell-derived particles offered by clinics as an injectable treatment

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Clinics

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Experts

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SMP Specialist
Hairo Fallas
Newark, NJ, United States

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Hairo Fallas