Stem Cell Applications in Human Hair Growth: A Literature Review

This review discusses how aging affects hair follicle stem cells and their environment, contributing to hair loss, and explores strategies to promote hair regrowth, but reports no new results.

In this study, increased corticosterone from chronic stress prolonged hair follicle stem cell quiescence in mice, inhibiting regeneration, but restoring Gas6 expression overcame this inhibition.

This review discusses the effects of hormonal changes on hair follicles, concluding that hormones like androgens and estradiol significantly influence hair growth and cycle, while the roles of other hormones are still being researched.

This review discusses the causes, diagnosis, and treatment of telogen effluvium and reports no new clinical findings; the authors underscore the importance of identifying and eliminating causative factors.

This article notes the lack of physician-reported outcome studies supporting the efficacy of off-label spironolactone in treating female pattern hair loss, despite its common prescription alongside FDA-approved topical minoxidil.

This study found that hair transplantation using the follicular unit extraction method significantly improved hair density and patient satisfaction in males with androgenetic alopecia, especially those younger than 33 and with less severe hair loss.

In this study of patients with Androgenic Alopecia, micro-grafts containing HD-AFSCs resulted in significantly improved hair density and follicle count over 11 months compared to a saline solution, suggesting a potential alternative therapy for hair regrowth.

This review discusses the potential role of vitamins and minerals in managing non-scarring alopecia but reports no clinical results; the authors advocate for further controlled trials to explore these relationships.

This study found that newborn mouse skin organoids can robustly grow hair in vivo, while adult organoids require specific interventions to restore their hair-forming ability.

This study reported that using human follicle stem cells isolated from hair bulge areas increased hair density by about 29% over baseline in patients with androgenetic alopecia, with significant improvements observed 23 weeks after the last treatment.

This study established and validated a visual scale to assess hair shedding in women with thick hair, finding it effective in distinguishing greater hair loss among women with female pattern hair loss compared to those without.

This study found that platelet-rich plasma injections significantly increased hair count and density in patients with male pattern hair loss without major side effects, suggesting it may be a safe and effective treatment option.

This study found that the Stem Cell Educator therapy improved hair regrowth and quality of life in patients with severe alopecia areata by restoring immune balance and protecting hair follicles from autoimmune damage.

This study found that human follicle dermal papilla cells promote survival, proliferation, and tubulogenesis of microvascular endothelial cells, highlighting their significant role in hair follicle vascular remodeling.

This study found that a combination of topical minoxidil and finasteride helped maintain hair density in patients with androgenetic alopecia after initial oral finasteride treatment.

This review summarizes the anatomy and physiology of the arrector pili muscle and discusses its potential role in hair loss disorders, reporting no new clinical results.

This review examines misconceptions and gaps in the understanding of androgenic alopecia (AGA) etiopathogenesis, offering new perspectives but no new experimental results.

Various techniques and tools for hair restoration were presented in 1998, including a mathematical model for donor area, use of lasers in surgery, methods for controlling grafted hair direction, and ways to increase graft yield. Satisfaction rates were around 39%, and studies showed trauma and dehydration can damage hair follicles.

This article describes the potential role of various growth factors and molecules in regulating mammalian hair follicle development but does not present new experimental results.