Cell Therapy for Androgenetic Alopecia: Elixir or Trick?

This review discusses the pathological factors and comorbidities associated with androgenetic alopecia and reports no new clinical results, emphasizing the need for improved understanding and treatment in clinical practice.

This article discusses hormonal mechanisms underlying androgenetic alopecia but does not report any new findings; it reviews the roles of dihydrotestosterone and available FDA-approved treatments.

This study observed that inflammation in androgenetic alopecia samples was similar to alopecia areata controls, but infundibular and isthmic inflammation were significantly more common in androgenetic alopecia cases.

This review discusses the therapeutic effects of stem cell therapy in various diseases and emphasizes the need for controlled differentiation and further large-scale trials, but reports no new findings.

This study observed that adding low-level light therapy with the GentleWaves® device to Minoxidil significantly boosted hair regrowth in men with androgenetic alopecia by reducing scalp inflammation.

This study found that human umbilical cord-derived mesenchymal stromal cell-conditioned media was safe and positively affected hair regeneration in 86.6% of participants in a pilot study.

Exosomes from stem cells might help treat hair loss.

This study demonstrated that culturing high-passage dermal papilla cells with specific supplemented conditioned media may preserve their hair-inducing abilities, suggesting potential for reconstructing new hair follicles in vivo.

This review examines how mesenchymal stem cells and their derivatives may enhance skin regeneration and rejuvenation, but it reports no new clinical results; the authors suggest iPSC-derived MSCs hold promise for future therapies.

This study found that dihydrotestosterone induced hair loss and changes in hair morphology in male C57BL/6 mice, effects that could be partially reversed by the AR antagonist bicalutamide.

This case report describes a 27-year-old woman who experienced facial swelling due to allergic contact dermatitis from using minoxidil 5% foam.

This study reported that autologous whole fat injection in the scalp considerably increased hair growth in patients with androgenetic alopecia.

This study suggests that impaired autophagy may be a potential mechanism contributing to androgenetic alopecia, as observed in miniaturized hair follicles from balding scalps.

This study found that the prevalence of androgenetic alopecia was significantly higher among smokers compared to nonsmokers, though the severity wasn't linked to smoking intensity.

In this study, microneedling with a depth of 0.6 mm, alongside minoxidil, significantly improved hair count and thickness in patients with androgenetic alopecia compared to minoxidil alone, and was more beneficial than a 1.2 mm depth.

In this study, human ADSC-CM treatment following nonablative fractional laser significantly increased hair density and volume in patients with androgenetic alopecia without any reported adverse effects.

This study reported that molecules from Zebrafish embryo cell differentiation can counteract neurodegeneration, regenerate tissues, and potentially reverse hair follicle damage in androgenetic alopecia.

This article reviews major uses of platelet-rich plasma in treating various hair disorders, including both non-cicatricial and cicatricial alopecia, but reports no new results.

In this study using a mouse model, ECM/SVF-CM, derived from adipose-derived stem cells, was observed to stimulate hair growth more effectively than SVF-CM by promoting cell proliferation, neovascularization, and anagen induction, which may support its potential as an improved treatment for hair loss.

This study found that 5% primed conditioned medium from human umbilical cord blood-derived mesenchymal stromal cells significantly improved hair density, thickness, and growth rate in patients with androgenetic alopecia.

This review discusses the potential of stem cell-based therapies, particularly involving stem cell-derived conditioned medium and exosomes, for hair regeneration in nonscarring alopecia, but it reports no new clinical outcomes.

In this randomized clinical trial, the authors reported that adipose-derived stem cell constituent extract topical solution increased hair density and thickness in patients with androgenetic alopecia over 16 weeks compared to placebo.

This review indicates that most studies reported positive effects of platelet-rich plasma injections for treating androgenic alopecia, with no major side effects, suggesting it may be a safe alternative to Minoxidil and Finasteride.

This study reports that mesenchymal stem cell-conditioned medium promoted dermal cell migration and proliferation, enhancing wound healing but not direct hair growth, in vitro and in adult mouse models.

This study found that injecting a mixture of epidermal stem cells and dermal papilla cells can induce hair follicle regeneration and well-ordered epidermis formation in mice.

Poor sleep, meat-heavy diets, and junk food worsen hair loss, while sugary drinks may help.

This study found that using insulin-like growth factor 1 with bone marrow-derived mesenchymal stem cells in a collagen-chitosan scaffold enhanced wound healing and hair follicle regeneration in rats.

This study found that human umbilical cord blood-derived mesenchymal stem cells (hUCB-MSCs) significantly prevented hair loss induced by dexamethasone in a mouse model and enhanced cell proliferation in human hair follicle cells, suggesting a protective effect against stress-related hair loss.

This study found that dermis micrografting improved hair growth and density in patients with androgenetic alopecia over 4, 6, and 12 months, suggesting it could be a novel treatment option.

This article addresses the mechanisms of androgenic alopecia and seeks to clarify misconceptions, but it reports no new empirical findings and calls for further controlled studies.

This study found that intradermal administration of adipose-derived stem cell–conditioned medium significantly increased hair density and dermal thickness, suggesting potential regenerative effects on both hair follicles and the interfollicular scalp in patients with alopecia.

This review article provides an updated overview of the pharmacology, mechanism of action, clinical efficacy, and adverse events associated with topical minoxidil, a widely used treatment for androgenetic alopecia and other hair loss conditions, while noting that its exact mechanism is still not fully understood.

This review discusses the potential of stem cell therapies for regenerating hair in nonautoimmune hair loss and calls for more studies to evaluate their efficacy.

This review highlights new treatment options for hair restoration, including platelet-rich plasma and stem cell therapy, which have shown efficacy in increasing hair count and density for androgenetic alopecia and alopecia areata, but presents no original clinical data.

This article discusses the potential of using vitrified hair follicles from younger men with a family history of male pattern baldness to increase donor availability for future hair transplantation, and reports no clinical results.

This study observed that hair follicles in hair loss patients had increased levels of Propionibacterium acnes, potentially linked to elevated immune response gene expression in miniaturized hair follicles.

This study found that hair thickness and density increased after treatment with human follicle mesenchymal stem cells and platelet rich plasma, associated with enhanced Wnt signaling and platelet derived growth factors.

This review assessed the effectiveness of various treatments for frontal fibrosing alopecia and found that intralesional steroids and 5α-reductase inhibitors showed the most positive outcomes in slowing or halting hair loss, though the lack of placebo-controlled studies and consistent outcome measures limits definitive conclusions.

This study found that a specific macrophage subpopulation in the dermis helps maintain hair follicle stem cell quiescence through cytokine-mediated signaling.

This study suggests that exosomes derived from dermal papilla cells, especially those cultured in three dimensions, promote hair growth and regeneration by enhancing follicular cell activity.

This article discusses the composition and function of the dermal papilla in hair follicles, focusing on its role in hair shaft generation and suggesting that cell loss in this area may contribute to hair loss.

This study found that ultraviolet radiation negatively affects hair follicle functions in human scalp skin, and caffeine application may provide some protective effects against this damage.

This review explored the new and emerging treatments for androgenetic alopecia and alopecia areata, finding that JAK inhibitors show promise for alopecia areata, while advancements in stem-cell research may eventually lead to new and improved treatments for androgenetic alopecia.

This review discusses current uses and advancements in mesenchymal stem cell-derived conditioned media as a potential regenerative therapy but does not present new clinical findings.

This study proposes the miR-22-5p-LEF1 axis as a novel pathway that may regulate hair follicle stem cell proliferation.

In this study, finasteride was found to enhance stem cell properties in dermal papilla cells, suggesting potential benefits for hair loss management and regenerative therapies.

This review discusses sexual side effects in men with androgenic alopecia treated with 5-alpha reductase inhibitors and reports no new clinical findings.

This article reviews the potential of adipose-derived and Wharton’s jelly stem cells in alopecia treatment but presents no new clinical findings, highlighting their potential benefits and limitations in regenerative medicine.

This study found that combining fractional radiofrequency microneedling with 5% topical minoxidil improved hair count and thickness more than minoxidil alone in Chinese men with male pattern hair loss.

This review suggests that while finasteride for male pattern hair loss was previously considered safe, there is now evidence associating 5-α reductase inhibitors with significant sexual and reproductive side effects.

In this study, patients receiving adipose-derived stromal vascular cell transplantation for alopecia areata experienced significant hair regeneration, increased growth, and improved hair quality after 3 and 6 months, indicating potential efficacy of this stem cell-based therapy for hair loss.

This review discusses the clinical applications and adverse effects of 5-alpha reductase inhibitors for treating benign prostatic hyperplasia and androgenic alopecia, noting controversies around their implications for other diseases, without reporting new results.

This study found that human umbilical cord blood mesenchymal stem cells promoted hair growth by advancing anagen onset and increasing hair follicle regeneration in an in vivo model.

In this study, adding low-level light therapy to minoxidil significantly improved hair regrowth and patient satisfaction in treating androgenetic alopecia compared to minoxidil alone.

This review discusses advances in molecular biology and genetics related to androgenetic alopecia and reports no new clinical results.

This review evaluates dihydrotestosterone's role in androgenic alopecia and proposes a model suggesting that chronic scalp tension and inflammation contribute to hair follicle miniaturization, identifying fibrosis, calcification, and tension as treatment targets.

This study found that platelet lysate produced higher follicular regeneration in hair restoration surgeries compared to activated PRP and saline, with significant gains in both follicular unit and hair density.

In this study, researchers found that androgenetic alopecia is associated with increased gene expression related to inflammation, stress, and fibrosis, particularly affecting the hair follicle stem cells and showing similarities to diseases like psoriasis.

This study found that combining microneedle treatments with 5% minoxidil topical solution led to the greatest increase in hair density among Chinese men with androgenetic alopecia.

This review discusses the molecular mechanisms of androgens and androgen receptors in skin disorders, particularly androgenetic alopecia, and reports no new clinical results; it highlights potential areas for future treatment development.

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 found that skin-resident Treg cells regulate hair follicle stem cell proliferation and differentiation through the Jag1-Notch signaling pathway, influencing hair regeneration.

This review discusses the potential of stem cell therapy for hair regrowth, emphasizing the advantages and promising outcomes, but reports no new clinical results.

This study found that apoptosis was more prevalent in hair follicles of women with female pattern hair loss, particularly in miniaturized follicles, and was associated with follicular inflammation.

This study reports that LL-37 treatment enhances cell proliferation, migration, and secretion of regenerative factors in adipose-derived stem cells, potentially promoting hair growth in vivo.

This study suggests that down-regulation of vasculature-related genes in dermal papilla cells from balding scalps might contribute to the development of androgenetic alopecia.

This review discusses the role of Foxc1 and type XVII collagen in hair follicle stem cell quiescence and aging, identifying mechanisms that relate to hair thinning and hair loss, and reports no new results.

This research found that Foxc1 transcription factor and COL17A1 are critical in regulating quiescence and hair thinning in hair follicle stem cells, with aging-related DNA damage leading to hair loss.

This study presents a new model for androgenetic alopecia progression, explaining diffuse hair loss in women through 3D reconstructions of the arrector pili muscle and its relationship with the hair follicle stem cell niche.

This study found that the prevalence of androgenetic alopecia in Turkish society is higher than in Asian and African communities but similar to European populations.

This retrospective study found that adipose-derived stem cell-conditioned media increased hair density and thickness in women with female pattern hair loss over 12 weeks, with no severe adverse effects reported.

This study found that using conditioned medium from vitamin D3 pre-activated preadipocytes enhanced hair regeneration in mice by promoting angiogenesis.

This study suggests that oxidative stress may contribute to androgenetic alopecia by inducing premature senescence and secretion of hair growth inhibitors in dermal papilla cells from balding scalp.

This review discusses the mechanisms and treatment strategies for age-related hair changes, such as androgenetic alopecia and hair graying, and reports no new clinical results.

This study found that overexpression of Wnt1a in bone marrow mesenchymal stem cells enhanced mouse hair follicle regeneration and promoted hair cycling.

This study found that applying Crescina® HFSC lotion for four months effectively increased hair growth and reduced hair loss in males with androgenetic alopecia.

Four genetic risk spots found for hair loss, with WNT signaling involved and a link to curly hair.

This review discusses the roles of androgens and androgen receptors in skin-related disorders and suggests that targeting androgen receptors may be a more effective treatment strategy.

In a rat model of chemotherapy-induced alopecia, this study found that low-level laser treatment significantly accelerated hair regrowth without affecting the efficacy of chemotherapy.

This study found no significant association between selected gene variants and female pattern hair loss, suggesting these genes might not be involved in its development.

This study suggests that the AR/EDA2R locus may contribute to early-onset female pattern hair loss, but no association was found with the 20p11 locus.

This review discusses characteristics of androgenetic alopecia in Asian patients and includes algorithmic management guidelines, but reports no new clinical findings.

This study found that increased expression of type II 5α-reductase, androgen receptors, and Hic-5/ARA55 in dermal papilla cells upregulates androgen sensitivity, playing a key role in androgenetic alopecia pathogenesis.

This review discusses advancements in the genetic understanding of androgenic alopecia and the FDA-approved treatments, including a new laser hair comb, but reports no clinical results.

This study found that androgenetic alopecia is the leading cause of hair loss in adolescents and may indicate endocrine disorders, emphasizing the need for accurate diagnosis.

This study found that subcutaneous administration of conditioned medium from adipose-derived stem cells promoted hair growth in mice, and hypoxia enhanced this effect by altering growth factor secretion.

In this study, genetic variation in the CYP19A1 gene, particularly the common rs4646 C allele, was associated with an increased risk of female pattern hair loss, especially in women under 40.

This study found no difference in male pattern baldness between patients with benign prostate hyperplasia and prostate cancer, and no correlation with serum androgen levels.

Hair follicles can regrow in wounded adult mouse skin using a process like embryo development.

This paper reviews the role of androgens in human skin function and the challenges in developing treatments for androgen-associated disorders, reporting no new experimental results.

This review discusses the use of antiandrogens like flutamide and its derivatives in prostate cancer treatment and highlights the need for next-generation antiandrogens for improved efficacy; it reports no new clinical results.

This study found that minoxidil significantly increases VEGF mRNA and protein expression in dermal papilla cells, suggesting a role in enhancing hair follicle vascularization in androgenetic alopecia.

People with hair loss have more androgen receptors and enzymes in certain follicles, with men and women showing different patterns.