6 citations
,
March 2021 in “Journal of Cosmetic Dermatology” In this study, platelet-rich plasma treatment improved hair regrowth and characteristics in mice and showed therapeutic efficacy in Chinese patients with androgenetic alopecia.
42 citations
,
February 2021 in “Signal Transduction and Targeted Therapy” This review discusses potential cell sources and bioengineering strategies for regenerating hair follicles with functional cycling, reporting no new results.
5 citations
,
January 2021 in “Journal of Cosmetic Dermatology” This study found that adding platelet-rich plasma with microneedling to conventional medical treatment significantly increased hair density and diameter in androgenetic alopecia patients compared to medical treatment alone.
26 citations
,
December 2020 in “Genes” This study found that a combination of insulin-like growth factor-1 and epidermal growth factor significantly promoted hair follicle growth and development in both cultured hair follicles and rabbits.
13 citations
,
September 2020 in “International Journal of Molecular Sciences” This study found that combining platelet-rich plasma therapy with minoxidil was more effective in treating androgenetic alopecia in men than either treatment alone.
86 citations
,
July 2020 in “International Journal of Molecular Sciences” This review discusses the role of Wnt/β-catenin signaling in hair follicle regeneration and highlights recent progress in developing hair loss treatments targeting this pathway, but reports no new clinical results.
33 citations
,
July 2020 in “Journal of The American Academy of Dermatology” In this study, PRP increased hair density in areas treated for androgenetic alopecia, but there was no significant difference when compared to placebo-treated areas.
18 citations
,
July 2020 in “Journal of The American Academy of Dermatology” This study found that PRP injections using the Eclipse system significantly improved hair density and caliber in women with androgenetic alopecia compared to saline placebo at 24 weeks.
14 citations
,
April 2020 in “Journal of Cosmetic Dermatology” In this study, intradermal injections of QR678 were found to significantly reduce hair fall in men with androgenetic alopecia over 6 months, with superior improvements in hair density and thickness compared to PRP.
44 citations
,
February 2020 in “Expert Opinion on Biological Therapy” In this study, autologous non-activated platelet-rich plasma was associated with greater hair re-growth than autologous activated platelet-rich plasma over long-term follow-up.
7 citations
,
January 2020 in “Frontiers in Pharmacology” This study found that the combination of epidermal growth factor and Jagged1 significantly stimulated hair growth in mice with androgen-suppressed conditions, suggesting potential therapeutic implications for androgenetic alopecia.
13 citations
,
January 2020 in “Experimental Dermatology” This pilot clinical trial suggests that platelet-rich plasma (PRP) treatment may increase hair density in patients with androgenetic alopecia, though outcomes varied between patients.
8 citations
,
January 2020 in “Acta dermato-venereologica” This pilot study found that platelet-rich plasma injections did not improve hair growth in men with androgenetic alopecia.
26 citations
,
December 2019 in “Indian Journal of Dermatology, Venereology and Leprology” This study found that platelet-rich plasma combined with topical minoxidil was more effective in increasing hair density for male-type baldness than either treatment alone.
22 citations
,
October 2019 in “Dermatologic Surgery” This study found that platelet-rich plasma was effective for hair regrowth in women with androgenic alopecia, though less so than minoxidil, but it was associated with improved quality of life responses.
20 citations
,
September 2019 in “Journal of Cosmetic Dermatology” This study found that combining stromal vascular fraction with PRP injections significantly improved hair density and reduced hair loss more effectively than PRP alone in patients with androgenetic alopecia.
6 citations
,
September 2019 in “Archives of Dermatological Research” In this study, researchers identified 32 differentially expressed genes involved in androgenetic alopecia, with down-regulated genes associated with Wnt and TGF-beta signaling and up-regulated genes linked to oxidative stress pathways.
25 citations
,
September 2019 in “PubMed” This review discusses the therapeutic potential of platelet-rich plasma in dermatology and highlights the need for standardized treatment protocols, but reports no new clinical results.
163 citations
,
April 2019 in “Nature Communications” This study found that mechanical skin stretching can stimulate hair stem cell proliferation and hair regeneration by activating a complex pathway involving WNT, BMP-2, and M2 macrophages.
12 citations
,
March 2019 in “Journal of Cosmetic Dermatology” This study found that platelet-rich plasma may effectively increase hair follicle numbers in men with androgenetic alopecia, but changes in hair thickness plateaued after the second injection.
9 citations
,
January 2019 in “American Journal of Dermatopathology” This study found that both androgenetic alopecia and alopecia areata showed significantly increased DKK-1 expression, potentially implicating it in the pathogenesis and as a treatment target for these conditions.
14 citations
,
November 2018 in “Journal of Cosmetic Dermatology” In this study, patients with androgenetic alopecia treated with platelet-rich plasma showed increased hair density and improved hair quality over six months, with no notable adverse effects, indicating that PRP may be an effective treatment option for this condition.
57 citations
,
October 2018 in “Journal of The American Academy of Dermatology” This study found that platelet-rich plasma significantly increased hair count, density, and the percentage of anagen hairs in patients with androgenetic alopecia, but these improvements did not correlate with platelet or growth factor levels.
25 citations
,
September 2018 in “Molecular Biology of the Cell” This study found that in mice lacking EGFR, elevated Wnt signaling disrupts hair follicle development by affecting cell proliferation and differentiation, revealing a critical role for EGFR in regulating these processes.
46 citations
,
May 2018 in “Dermatologic Surgery” In this study, subdermal platelet-rich plasma injections significantly increased hair count and shaft caliber in individuals with androgenetic alopecia, with monthly treatments potentially offering greater benefits.
53 citations
,
June 2017 in “Skin appendage disorders” This review suggests that platelet-rich plasma may be effective in increasing hair density in patients with androgenetic alopecia, but more research is needed to determine the best treatment protocol.
19 citations
,
May 2017 in “Dermatologic Surgery” Combining platelet-rich plasma with 5% minoxidil solution improves hair regrowth in androgenetic alopecia patients.
153 citations
,
March 2017 in “Endocrine” This review examines recent advances in understanding the pathophysiology and molecular mechanisms of androgenetic alopecia, highlighting two major genetic risk loci, but does not report new clinical findings.
110 citations
,
August 2016 in “Drugs” Minoxidil is the only FDA-approved topical drug for treating male or female pattern hair loss, and other medications like finasteride and dutasteride can also increase hair growth.
46 citations
,
June 2015 in “Journal of Investigative Dermatology” This study found that androgen receptor activation in adult mouse skin reduces β-catenin-induced hair follicle growth and sebaceous gland conversion, highlighting its role in stem cell fate decisions.
236 citations
,
April 2015 in “Cell” This study found that patterned hair plucking in mice triggers a collective regeneration response in nearby unplucked hair follicles via a quorum sensing mechanism involving immune signaling.
64 citations
,
January 2015 in “BioMed Research International” In this study, topical application of fibroblast growth factors was found to promote hair growth by inducing and prolonging the anagen phase in telogenic C57BL/6 mice, suggesting potential as hair growth-promoting agents.
61 citations
,
June 2014 in “Scientific Reports” This study found that overexpression of Wnt1a in bone marrow mesenchymal stem cells enhanced mouse hair follicle regeneration and promoted hair cycling.
30 citations
,
October 2013 in “BMC dermatology” In this animal study, topical VEGF gel increased hair growth and thickness in Mesocricetus auratus, although it was not completely inert, highlighting the need for further toxicity confirmation.
211 citations
,
April 2013 in “Development” In this study, researchers found that the number of dermal papilla cells in hair follicles determines hair size and shape in mice, suggesting potential avenues for addressing hair loss.
19 citations
,
January 2013 in “International journal of medical sciences” In this study, overexpression of Wnt5a in mice was associated with the elongation of the telogen stage and inhibition of hair growth initiation, suggesting Wnt5a's role in maintaining hair follicle quiescence.
115 citations
,
September 2012 in “Experimental Dermatology” This article reviews the molecular mechanisms involved in androgenetic alopecia and the androgen's paradoxical role in hair growth, but reports no new experimental findings.
77 citations
,
July 2012 in “Journal of Investigative Dermatology” The researchers observed that overexpression of Wnt10b in a mouse model can induce hair follicle regeneration by switching follicles from the resting phase to the growth phase via the Wnt-β-catenin signaling pathway.
170 citations
,
July 2012 in “Journal of Investigative Dermatology” In this study, researchers showed that Wnt ligands secreted by hair follicle epithelium are crucial for hair follicle regeneration and may be significant for treating hair disorders like alopecia.
286 citations
,
June 2012 in “Nature Immunology” In this study, researchers found that mouse hair follicles recruit Langerhans cells by secreting chemokines, acting as key portals for these cells in both mice and humans.
207 citations
,
March 2012 in “Development” In this mouse study, researchers found that dermal Wnt signaling/β-catenin activity is essential for fibroblast proliferation and initiating hair follicle formation by interacting with epidermal Wnt ligands.
95 citations
,
January 2012 in “British Journal of Dermatology” This study found that androgens inhibit hair follicle stem cell differentiation by disrupting the Wnt signalling pathway in dermal papilla cells, but Wnt activation can restore differentiation.
218 citations
,
December 2011 in “Advances in Urology” This review discusses the biochemical properties and clinical significance of 5 alpha-reductase isozymes and reports no new clinical results.
44 citations
,
July 2011 in “Dermatologic Therapy” This study found that finasteride 1 mg was effective in improving androgenetic alopecia over 10 years in men, particularly those older than 30, with some reporting beneficial results even after 5 years.
314 citations
,
April 2010 in “Developmental Cell” This study found that in mice, inactivating beta-catenin in the dermal papilla reduces hair follicle progenitor proliferation and disrupts the hair cycle.
32 citations
,
January 2010 in “Journal of Dermatological Science” In this study, Waved-5 mice with reduced EGFR signaling showed nearly normal skin and hair follicle function but experienced a transient reduction in subcutaneous fat.
82 citations
,
May 2009 in “Development” This study found that downregulation of EGF and KGF signaling is necessary for hair follicle initiation in placodes, revealing a new role for KGF in hair follicle formation in mice.
759 citations
,
February 2009 in “Current Biology” This review summarizes fundamental concepts and recent advancements in hair follicle biology, including insights from mouse models into broader molecular and cellular processes relevant to regeneration and development.
70 citations
,
January 2009 in “The Journal of clinical endocrinology and metabolism/Journal of clinical endocrinology & metabolism” This study explored the interaction between androgen and Wnt signaling in dermal papilla cells, targeting the effects of androgen on hair growth reduction.
171 citations
,
July 2007 in “Journal of Investigative Dermatology” The researchers reported that DHT-inducible DKK-1 may play a significant role in DHT-driven balding by inhibiting hair follicle cell growth and promoting apoptosis in androgenetic alopecia.
788 citations
,
February 2007 in “Nature” This review explores how adult skin epithelia preserve stem cell populations for hair follicle regeneration and wound healing, but reports no new experimental results.
4 citations
,
July 2006 in “British journal of dermatology/British journal of dermatology, Supplement” This study found that testosterone significantly stimulated the proliferation of outer root sheath cells when co-cultured with beard or axillary dermal papilla cells, but not with cells from occipital scalp hair follicles.
193 citations
,
August 2005 in “Journal of Investigative Dermatology Symposium Proceedings” This study found that the prevalence of androgenetic alopecia increases with age among both men and women in Maryborough, Australia, with 57% of women and 73.5% of men aged 80 and over affected.
397 citations
,
February 2004 in “British Journal of Dermatology” This article reviews the mechanisms by which minoxidil stimulates hair growth and reports no new clinical findings.
165 citations
,
December 2002 in “Molecular and Cellular Endocrinology” This study found that finasteride improves scalp hair growth in men with male pattern hair loss by reducing scalp dihydrotestosterone levels, but it did not benefit postmenopausal women with female pattern hair loss.
520 citations
,
February 2001 in “Journal of Clinical Investigation” This study found that VEGF significantly enhances perifollicular vascularization during the hair growth phase, accelerating hair regrowth and increasing follicle and hair size, while its inhibition retards hair growth.
30 citations
,
June 2000 in “Journal of dermatological science” In this study, researchers found that keratinocytes are unlikely to be target cells for androgen, as shown by limited androgen receptor transcriptional activity in keratinocyte cells.
192 citations
,
October 1998 in “Experimental Dermatology” This article examines the terminal to vellus transition in androgenetic alopecia through cellular and developmental mechanisms, discussing challenges and knowledge gaps without presenting new clinical findings.
227 citations
,
January 1998 in “Journal of Endocrinology” This study found that dermal papilla cells from balding scalp hair follicles have significantly higher levels of androgen receptors than those from non-balding follicles, supporting their in vivo androgen response.
416 citations
,
September 1997 in “Journal of Investigative Dermatology” People with hair loss have more androgen receptors and enzymes in certain follicles, with men and women showing different patterns.
107 citations
,
June 1997 in “PubMed” In this study, disrupting the epidermal growth factor receptor in mice led to abnormal hair and skin development, characterized by disorganized hair follicles and systemic disease, providing a model for understanding EGFR's role in skin biology.
173 citations
,
July 1995 in “Biochemical and biophysical research communications” This study suggests that IGF-I may mediate androgen-induced hair growth in outer root sheath cells cocultured with beard dermal papilla cells.
48 citations
,
April 1995 in “PubMed” This study found that dermal papilla cells from beard and axillary hair follicles can produce androgen-dependent factors that stimulate proliferation in adjacent follicular epithelial cells under testosterone influence.
71 citations
,
May 1991 in “Clinical and Experimental Dermatology” Young men with male pattern baldness lose hair density over time without treatment.