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Glossary Epithelial Keratins

Epithelial keratins are a group of fibrous proteins that form a key component of the cytoskeleton in epithelial cells, including those in the hair follicle. They play a crucial role in maintaining the structural integrity and resilience of hair and skin. In the context of hair loss, abnormalities or mutations in keratin genes can lead to conditions such as alopecia or other hair disorders, highlighting their importance in hair biology and health. Key distinguishing characteristics include their ability to form intermediate filaments, which provide mechanical support and protection to cells.

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Research

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research Induction of Hard Keratin Expression in Non-Nail-Matrical Keratinocytes by Nail-Matrical Fibroblasts through Epithelial-Mesenchymal Interactions

25 citations , January 2003 in “Plastic & Reconstructive Surgery”

This study indicates that nail-matrical fibroblasts can induce hard keratin expression in non-nail-matrical keratinocytes, suggesting potential for using non-nail-matrical epidermal grafts to treat nail injuries.

Nestin as a Marker of Unipotent Epithelial Progenitor Cell Differentiation into Outer Root Sheath Keratinocytes in Embryonic and Adult Hair Follicles

research Nestin as a marker of unipotent epithelial progenitor cell differentiation into outer root sheath keratinocytes in embryonic and adult hair follicles

May 2022 in “Research Square (Research Square)”

This study found that nestin-expressing unipotent progenitor cells capable of differentiating into outer root sheath keratinocytes are present during hair follicle development and in adult hair follicles.

research Keratin 15 Expression in Stratified Epithelia: Downregulation in Activated Keratinocytes

198 citations , March 1999 in “Journal of Investigative Dermatology”

This study found that keratin 15 expression is downregulated in hyperproliferative conditions like psoriasis and hypertrophic scars, suggesting it is not compatible with keratinocyte activation.

research Regulation of Keratin 9 in Nonpalmoplantar Keratinocytes by Palmoplantar Fibroblasts Through Epithelial–Mesenchymal Interactions

92 citations , April 1999 in “The journal of investigative dermatology/Journal of investigative dermatology”

This study suggests that keratin 9 expression in nonpalmoplantar keratinocytes can be induced by signals from palmoplantar fibroblasts, potentially enabling the use of nonpalmoplantar epidermis to treat palmoplantar wounds.

research Targeting expression of keratinocyte growth factor to keratinocytes elicits striking changes in epithelial differentiation in transgenic mice.

265 citations , March 1993 in “The EMBO Journal”

Keratinocyte growth factor significantly alters skin and tissue development.

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community DHT Isn’t the Only Factor in Hair Loss and That Might Be the Key to a Real Cure

373 upvotes 6 months ago

Hair loss involves more than just DHT, with genetic factors like TRPS affecting hair follicles. Treatments such as Amplifica's AMP-601 and AMP-303 target stem cells for potential hair growth solutions.

community Prevention of age-related beard graying in humans by the topical application of Eriodictyon angustifolium extract

5 upvotes 4 years ago

Topical application of Eriodictyon angustifolium extract can prevent and reverse age-related beard graying and darken gray hair by increasing melanin production. Sterubin, a component of the extract, also promotes hair pigmentation and protects cells from DNA damage.

community Adipocyte lipolysis activates epithelial stem cells for hair regeneration through fatty acid metabolic signaling

23 upvotes 10 months ago

Fatty acid metabolic signaling can activate epithelial stem cells for hair regeneration. Oleic and palmitoleic acids showed the best results, but practical application on humans remains uncertain.

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learn Epidermal Growth Factor

learn Osteopontin

signaling protein that, when suppressed, may grow hair by reducing inflammation and stem cell loss

learn Stem Cell Factor

learn Keratin

learn Alpha Keratin

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