Stem Cell Secretome as a Mechanism for Restoring Hair Loss Due to Stress, Particularly Alopecia Areata: Narrative Review

This review examines the use of exosomes in skin rejuvenation and hair regeneration but reports no new clinical results, noting challenges in purification and practical use for clinical applications.

This study observed that exosomes from adipose-derived stem cells promoted hair growth by enhancing dermal papilla cell proliferation and activating signaling pathways, suggesting potential for treating immune-mediated alopecia.

This article reviews the potential of using induced pluripotent stem cells for hair restoration, underscoring their promise over current surgical methods, but reports no new clinical results.

This study reports that hair follicle-derived mesenchymal stem cells significantly reduced hair loss and inflammation in alopecia areata models, suggesting a potential therapeutic approach.

This study found that exosomes derived from human adipose stem cells significantly enhanced the proliferation and migration of dermal papilla cells compared to those from platelet-rich plasma, suggesting potential benefits for hair loss treatment.

This study found that human hematopoietic mesenchymal stem cells increased the viability and migration of human outer root sheath cells in an in vitro alopecia areata model, involving Wnt/β-catenin and JAK/STAT pathways.

In this study, patients with alopecia areata received a single intradermal injection of Wharton's jelly-derived mesenchymal stem cells, resulting in an average hair regrowth of 67% at treated sites within 24 weeks, demonstrating both efficacy and safety without side effects.

This review explores different types of alopecia, the effects on hair appearance and growth, and the conventional treatments available, including minoxidil and finasteride, along with their side effects and the need for future drug development and potential therapies.

This study found that concentrated nanofat, used alone or with decellularized nanofat, may enhance hair growth in mice by activating dermal papilla cells and the anagen phase.

This study found that stress hormones, particularly CRF, can inhibit hair growth and induce hair loss by affecting human dermal papilla cells and hair follicles, suggesting a functional HPA axis in these cells.

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.

In this review, researchers highlight preclinical and clinical studies on stem cell-based therapies for hair loss, noting promising early findings but indicating that further robust clinical research is necessary to better understand their effectiveness, safety, and mechanisms.

This study found that preconditioning adipose-derived stem cells with HB-EGF enhanced their ability to promote hair growth in vivo by increasing their motility, paracrine effects, and survival.

This review discusses the potential of stem cell secretome in regenerative medicine and suggests that its paracrine effects, rather than direct cell replacement, may drive therapeutic benefits.

This review discusses the potential of adipose-derived tissue components like nanofat and stem cells for aesthetic rejuvenation, covering their use in hair growth, scar reduction, and more, without reporting new clinical results.

This study found that conditioned media from dental pulp stem cells stimulated significantly faster hair growth in mice, suggesting potential as a treatment for alopecia.

This article discusses the psychological impact and diagnostic distinctions of hair loss disorders, emphasizing the crucial role of dermatologists in managing these conditions without reporting new findings.

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

This review examines the literature on autoimmune hair loss disorders, highlighting the collapse of immune privilege and the potential role of neurogenic stress in this process, but reports no new clinical results.

This study found that treatment with mesenchymal stem cell extracellular vesicles enhanced hair growth in mice and stimulated dermal papilla cell activity and growth factor production in vitro.

This review examines the effects of adipose-derived stem cells and their secreted factors on hair growth stimulation in laboratory and animal models, suggesting their potential as therapeutic agents for hair loss treatment.

This article reviews different types of alopecia, their diagnosis, and treatment options available in a family physician's practice, but it reports no new research findings.

This article reviews the potential advantages of secretome derivatives from human uterine cervical stem cells in MSC therapy and notes the need for regulatory standards to ensure safety and efficacy.

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.

In this study, Japanese patients treated with adipose-derived stem cell-conditioned medium for hair regeneration showed positive outcomes, suggesting it may be an effective new therapy for alopecia.

In this study, plasma levels of MSH and cortisol in patients with alopecia areata did not show significant changes compared to healthy controls.

This study found that proteins secreted by early-passage dermal papilla cells, including SDF1, MMP3, biglycan, and LTBP1, may play significant roles in hair follicle regeneration.

This study observed that autologous bone marrow derived mononuclear cells and follicular stem cells were both safe and effective for improving resistant alopecia areata and androgenetic alopecia, with no serious adverse events.

This review discusses current and future treatments for alopecia areata and trichotillomania in children and reports no new clinical results, emphasizing the need for safer and more effective therapies.

This article discusses the relationship between cortisol, stress, and hair follicle function and highlights oral supplementation with a specific proteoglycan as a promising treatment for stress-related hair growth disorders, but it does not present new clinical results.

This review discusses the complex relationship between stress and various skin conditions, highlighting the role of the skin in the stress response and the brain-skin communication pathways, but reports no new research findings.

This study found that neural stem cell extract enhanced hair growth in mice and cells by stimulating hair follicle niches and activating signaling pathways like TGF-β and BMP.

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 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 review discusses emerging treatments and mechanisms for alopecia, highlighting potential therapies like janus kinase inhibitors and advances in stem-cell technology, but reports no new experimental results.

This study found that vitamin C increased the survival, proliferation, and hair-regenerative potential of adipose-derived stem cells through the MAPK pathway and enhanced hair growth in mice.

This review discusses the causes, associated conditions, and treatment options for alopecia areata, such as corticosteroids and wigs, but reports no new clinical findings.

Alopecia Areata is an autoimmune condition causing hair loss with no cure and treatments that often don't work well.

This review discusses various therapeutic agents for alopecia areata, categorized by efficacy and safety, and highlights the lack of curative treatments and long-term outcome studies.

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.

This review discusses the paracrine effects of adipose tissue-derived stem cells on surrounding cells and tissues, noting their potential therapeutic benefits, but reports no new clinical results.

This study found that injecting PDGF-AA and -BB into mouse skin immediately triggered the hair growth cycle's anagen phase, suggesting potential treatment options for certain types of alopecia.

This article reviews the stages and regulation of the hair cycle, highlighting molecular regulators involved, but it does not present new research findings.

This study found that psychoemotional stress disrupts hair growth in mice by terminating anagen and suggests a potential pathway for pharmacological management of stress-related hair loss in humans.

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.

Inhibiting Bmp signaling disrupts hair growth and differentiation.

This study found that recombinant human HGF/SF injections altered hair follicle growth cycles and mildly promoted hair elongation in mice, depending on their hair cycle stage.