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Research

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research 289 Immortalization of primary human dermal papilla cells by Bmi-1 and TERT

1 citations , September 2017 in “Journal of Investigative Dermatology”

This study reported that introducing the TERT and Bmi1 genes into mouse dermal papilla cells resulted in immortal cells capable of inducing new hair follicles in vivo, and human immortal DPCs were also developed.

research Dengue Virus Infects Primary Human Hair Follicle Dermal Papilla Cells

14 citations , August 2018 in “Frontiers in Cellular and Infection Microbiology”

This study found that dengue virus infection caused inflammation and cell death in human hair-follicle dermal papilla cells, which may contribute to increased hair shedding observed during the epidemic in Taiwan.

Effect of Serenoa Repens Extract on Human Primary Hair Dermal Papilla Cells from Male and Female Donors

research Effect of a Serenoa repens extract on human primary hair dermal papilla cells isolated from male and female donors

March 2026 in “Planta Medica”

Serenoa repens extract may help hair growth in both men and women.

research In vitro hair growth‐promoting effect of Lgr5‐binding octapeptide in human primary hair cells

October 2023 in “Journal of Cosmetic Dermatology”

This study found that an octapeptide binding to Lgr5 can enhance the proliferation and differentiation of human primary hair cells by activating the Wnt/β-catenin signaling pathway, suggesting its potential as a treatment for hair loss in androgenetic alopecia.

research [Primary observation on construction of skin with human hair follicle bulge cells with tissue engineering technique].

4 citations , June 2007 in “PubMed”

This study found that using engineered skin with PGA-collagen scaffolds, combined with hair follicle stem cells and other cell types, effectively repaired full-thickness skin defects in nude mice.

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Community Join

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community Innovative hair loss treatment can restore 90% of lost hair

890 upvotes 1 year ago

A new hair loss treatment using dermal exosomes can restore up to 90% of lost hair in mice. Users discuss potential human trials and compare it to Minoxidil and Finasteride.

community PP405 Won’t Work: Follicle Is Miniaturized, Fibrosed, And Missing Key Support Cells

7 months ago

PP405 is ineffective for miniaturized, fibrosed hair follicles in androgenetic alopecia. AMP303 may activate hair follicle stem cells, but minoxidil and finasteride are still the main treatments.

community My Theory Of Androgenic Alopecia

16 upvotes 9 months ago

Hair loss is linked to cellular physiology and the IGF-1 to TGF-B1 ratio, not just androgen sensitivity. The theory lacks evidence, while finasteride and minoxidil are effective treatments.

community PP405: Regrows Hair In 8 Weeks. Is This The Miracle Cure?

168 upvotes 7 months ago

PP405 is considered as a potential hair regrowth treatment, but users are skeptical due to past product failures. They compare it to Minoxidil and Finasteride, questioning its effectiveness and the intentions of pharmaceutical companies.

community The Real Reason For Hair Loss?

8 months ago

Hair loss is linked to scalp fibrosis and tension, which result from chronic mechanical stress and androgenic signaling. Treatments include blocking androgens with finasteride, promoting hair growth with topical minoxidil, and improving scalp mobility through exercises.

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Learn

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learn Stem Cell Factor

learn Osteopontin

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

learn Vascular Endothelial Growth Factor

learn sh-Polypeptide-7

learn Epidermal Growth Factor

learn Platelet-Rich Plasma

What is Platelet-Derived Growth Factor Beta Polypeptide, and how does it help stimulate new hair growth? PDGF-BB is a growth factor that signals to dermal papilla cells and promotes blood-vessel formation; mouse studies report it can push follicles into the growth phase, and human evidence comes only indirectly from PRP trials. No PDGF product is approved for hair restoration and there is no published human trial of PDGF-BB on its own.

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