April 2024 in “Nigerian Postgraduate Medical Journal” This review summarizes existing knowledge on androgenetic alopecia, including its epidemiology, pathophysiology, and management, but presents no new research findings.
This study reviews the regulatory mechanisms and molecular processes governing stem cell activity in hair follicles, highlighting their roles in hair regeneration and potential implications for treating hair and skin disorders.
7 citations
,
August 2023 in “Ageing Research Reviews” More research is needed to understand hair aging and develop effective treatments.
4 citations
,
December 2022 in “Advanced science” This study found that fatty acid desaturation regulated by SCD1 is crucial for hair growth by maintaining hair follicle stem cell niches, with its absence causing abnormal hair growth in mice.
9 citations
,
July 2022 in “Cell reports” This study found that Sox2 within dermal papilla cells in the hair follicle regulates hair pigmentation, influencing the type and production of melanin.
25 citations
,
June 2022 in “Developmental cell” In this study, Hedgehog signaling in dermal papilla fibroblasts was found to accelerate hair growth and induce follicle multiplication in mice via the SCUBE3/TGF-β pathway, with some effects observed in human scalp hair follicles.
14 citations
,
March 2022 in “Journal of Biomedical Science” In this study, Cyanidin 3-O-arabinoside was found to protect against DHT-induced dermal papilla cell senescence and mitochondrial dysfunction in androgenetic alopecia, restoring hair growth in mouse models.
4 citations
,
February 2022 in “Experimental Dermatology” This study found that mitochondrial dysfunction and higher oxidative stress in balding dermal papilla cells may contribute to androgenetic alopecia, with antioxidants potentially improving metabolite uptake.
13 citations
,
January 2022 in “Stem cell reviews and reports” This study found that using cultured mesenchymal stem cells from mouse whisker hair follicle outer root sheath in wound healing reduced inflammation, accelerated closure, and resulted in less hypertrophic scarring in mice.
30 citations
,
October 2021 in “Scientific Reports” This study found that human scalp hair follicles can internally operate a Cori cycle, synthesize glycogen in the presence of lactate, and modulate growth through glycogen phosphorylase activity.
October 2021 in “QJM: An International Journal of Medicine” This study found that N-acetyl-cysteine alone or combined with minoxidil improved hair parameters in men with early-onset androgenetic alopecia, with tolerable side effects.
6 citations
,
August 2021 in “International Journal of Cosmetic Science” This study concluded that a regimen containing functional antioxidants and barrier-enhancing agents reduced hair shedding and increased perceived hair fullness in participants with self-perceived hair thinning over 24 weeks.
1 citations
,
August 2021 in “International journal of cosmetic science (Print)” This study reported that using piroctone olamine in either a shampoo or leave-on product form significantly increased hair retention and improved scalp condition in women with perceived hair thinning.
31 citations
,
August 2021 in “Stem Cell Research & Therapy” This review examines the life cycle, biomarkers, and functions of hair follicle stem cells, emphasizing their role in hair loss therapy and other skin and hair disorders, but reports no new clinical results.
38 citations
,
July 2021 in “ACS Nano” This study found that a ceria nanozyme-integrated microneedles patch accelerated hair regeneration in an androgenetic alopecia mouse model more effectively than minoxidil, with reduced application frequency and minimal skin damage.
9 citations
,
June 2021 in “Nutrients” In this study, fisetin applied to the dorsal skin of mice activated hair follicle stem cells through exosome secretion from keratinocytes, promoting hair growth.
29 citations
,
January 2021 in “Journal of Investigative Dermatology” This study demonstrates that dermal white adipose tissue regulates human hair growth and pigmentation through hepatocyte growth factor secretion, highlighting potential therapeutic targets for hair-related disorders.
8 citations
,
November 2020 in “Journal of Cosmetic Dermatology” This preclinical study observed that a nanoencapsulated ingredient complex, AcPi, may prevent hair follicle aging and hair loss by reducing oxidative stress, enhancing mitochondrial activity and WNT/β-catenin signaling, and controlling androgenic metabolism when tested on human scalp cultures.
8 citations
,
September 2020 in “Genes & Genomics”
25 citations
,
September 2020 in “Molecules” In this study, quercitrin was reported to promote hair growth and cell viability in cultured human dermal papilla cells by enhancing cellular energy metabolism and growth factor production via MAPK/CREB signaling.
25 citations
,
May 2020 in “Stem Cells Translational Medicine” 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.
10 citations
,
April 2020 in “PloS one” This study found that mitochondrial dysfunction due to Crif1 deficiency in hair follicle stem cells significantly slows the hair growth cycle in adult mice but does not impact the maintenance of HFSC populations.
30 citations
,
April 2020 in “Stem Cell Research & Therapy” This study found that the PI3K-Akt signaling pathway is essential for regenerating new hair follicles when epidermal stem cells and skin-derived precursors are combined, suggesting potential therapeutic applications for hair regeneration.
59 citations
,
March 2020 in “Journal of Biomedical Science” This study explored the complex roles of niche cells in regulating hair follicle stem cells, identifying specific cell functions such as signaling, sensing, and relaying messages, which could provide insights into treating hair loss conditions like androgenetic alopecia and alopecia areata.
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.
5 citations
,
January 2020 in “Annals of maxillofacial surgery” This study provides preliminary evidence that combining microneedling with platelet-rich plasma and concentrated growth factor therapy may significantly boost hair growth in men with androgenetic alopecia.
37 citations
,
November 2019 in “Journal of Microbiology and Biotechnology” This study found that loliolide enhanced hair growth-related functions in 3D dermal papilla spheroids by activating AKT/β-catenin signaling pathways, with increased expression of related growth factors and genes.
28 citations
,
October 2019 in “Seminars in Cell & Developmental Biology” This article discusses the advances in understanding wound-induced hair follicle neogenesis (WIHN) and highlights the roles of specific signaling pathways and cellular plasticity, noting no clinical results but suggesting potential areas for further research.
136 citations
,
May 2019 in “Cells” This review discusses the advancements in intraoperative stem cell therapies and highlights their potential to improve hair regrowth, but it reports no new clinical results.
30 citations
,
December 2018 in “Trends in Endocrinology and Metabolism” The authors concluded that dermal white adipose tissue, influenced by factors like light irradiation, plays a significant role in modulating hair follicle cycles and could be targeted for hair growth treatments.
24 citations
,
June 2018 in “PubMed” This study found that liposterolic extracts of Serenoa repens enhanced hair regeneration and repair in DHT-induced hair loss mouse models, suggesting potential effects comparable to finasteride.
46 citations
,
May 2018 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that the vitamin D receptor is essential for the self-renewal, migration, and differentiation of epidermal stem cells during skin wound healing in mice.
17 citations
,
February 2018 in “Journal of Investigative Dermatology” This study found that the PPAR-γ modulator N-acetyl-GED may enhance mitochondrial function in human hair follicles, particularly in outer root sheath keratinocytes.
50 citations
,
January 2018 in “Acta physiologica” This study found that four days of simulated night shift work in healthy adults reduced insulin sensitivity, suggesting a potential increased risk of type 2 diabetes.
65 citations
,
January 2018 in “Nature Reviews Endocrinology” This review discusses the unique features of dermal white adipose tissue, its interaction with hair follicles, and its role in skin physiology, reporting no new experimental findings.
72 citations
,
November 2017 in “Journal of developmental biology” This review discusses the role of Hedgehog signaling in epidermal and hair follicle development and its involvement in basal cell carcinoma, without reporting new empirical findings.
13 citations
,
October 2017 in “Bioscience, Biotechnology, and Biochemistry” This study found that a titrated extract of Centella asiatica enhanced the hair growth potential of 3D spheroid cultured human dermal papilla cells.
This study observed increased proliferation and certain gene expressions in dermal papilla cells exposed to an 808 nm laser diode array at doses above 0.5 J/cm².
4 citations
,
June 2017 in “Anais Brasileiros De Dermatologia” This study demonstrates that miniaturized hair follicles in female pattern hair loss overexpress nuclear aryl hydrocarbon receptors, suggesting a potential role for environmental pollutants in this condition.
30 citations
,
April 2017 in “European Journal of Cell Biology” This study observed that CIP/KIP proteins play a significant role in regulating cell cycle arrest and differentiation in human hair follicles, supporting hair growth and formation in the anagen phase.
40 citations
,
March 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” This study visualized mitochondrial metabolism in cultured bovine hair follicles and plucked human hairs, finding that ROS and mitochondrial polarization correlate in specific hair follicle regions, particularly near keratin deposition sites.
83 citations
,
October 2016 in “Stem Cells and Development” This study found that epidermal growth factor significantly enhances the proliferation of hair follicle-derived mesenchymal stem cells through the EGFR/ERK and AKT pathways, without involving the STAT3 pathway.
30 citations
,
May 2016 in “International Journal of Cosmetic Science” 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.
17 citations
,
April 2016 in “Journal of Investigative Dermatology” This study found that the synthetic thyroid hormone receptor modulator KB2115 significantly prolonged the growth phase of human hair follicles in culture without altering mitochondrial activity, suggesting potential as a safer hair loss treatment compared to traditional thyroid hormones.
36 citations
,
October 2015 in “Cell reports” In this study, researchers found that Gab1 is critical in controlling the hair cycle and the self-renewal of hair follicle stem cells in mice.
27 citations
,
August 2015 in “Experimental Dermatology” In this study, electrical stimuli at low voltage and frequency settings promoted hair growth in vitro and in rabbit models, possibly by activating pathways like Wnt/β-catenin.
1 citations
,
July 2015 in “Microscopy Research and Technique” In this study, researchers found that patients with Friedreich's ataxia exhibited more pronounced ultra-structural hair alterations compared to carriers, likely due to oxidative stress related to deficient frataxin expression.
113 citations
,
June 2015 in “Stem Cell Research & Therapy” This study found that activation or inhibition of Wnt/β-catenin and Notch signaling pathways in rats can alter wound healing, possibly by affecting epidermal stem cell activity and keratinocyte behavior.
56 citations
,
March 2015 in “Journal of Investigative Dermatology” Healthy mitochondria in skin cells are essential for proper hair growth and skin cell interaction in mice.
93 citations
,
February 2015 in “Journal of Investigative Dermatology” 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.
9 citations
,
January 2015 in “Fundamental & clinical pharmacology” This study found that cyclosporine A's enhancement of hair growth in mice is partly due to its ability to block the nuclear translocation of apoptosis-inducing factor, slowing the hair follicle transition to the catagen phase.
35 citations
,
December 2014 in “Lasers in surgery and medicine” This study found that red light accelerated the transition from the resting to growth phase in hair follicles faster than green and blue light in mice, suggesting it may stimulate hair growth.
98 citations
,
July 2014 in “Trends in Molecular Medicine” This article discusses the role of human hair follicles in neuroendocrinology and suggests potential new therapeutic targets by examining how neuromediators influence hair growth, pigmentation, and stem cell biology in organ cultures.
223 citations
,
January 2014 in “International Journal of Molecular Sciences” This article reviews the complex signaling pathways between epithelial and mesenchymal cells crucial for hair follicle morphogenesis, highlighting the Wnt pathway's role as a master regulator without reporting new experimental findings.
133 citations
,
September 2013 in “Nature Reviews Molecular Cell Biology” Different types of stem cells and their environments are key to skin repair and maintenance.
95 citations
,
August 2013 in “Journal of Investigative Dermatology” HPT axis hormones boost mitochondrial function and growth in hair follicles, potentially aiding hair health.
220 citations
,
June 2013 in “The Journal of Pathology” This study found that immune privilege collapse in the hair follicle bulge and associated immune responses may contribute significantly to the pathogenesis of lichen planopilaris, suggesting a potential autoimmune basis for the disease.
198 citations
,
June 2013 in “Molecular psychiatry” This study found that schizophrenia-derived neurons exhibited impaired differentiation and mitochondrial dysfunction, suggesting a potential link between these factors and neurodevelopmental processes in schizophrenia.
277 citations
,
February 2013 in “Science Signaling” This study found that mitochondrial reactive oxygen species are crucial for normal epidermal differentiation and hair follicle growth, as demonstrated by impaired development in mice lacking these signals due to a keratinocyte-specific TFAM deficiency.
300 citations
,
August 2012 in “Seminars in Cell & Developmental Biology” This review discusses mesenchymal–epithelial interactions in hair follicle development and cycling, highlighting recent insights without reporting new experimental results.
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.
396 citations
,
May 2011 in “Cell stem cell” This study found that Shh from neurons signals to Gli1-expressing cells in the hair follicle, cultivating a niche where these bulge cells can potentially transform into epidermal stem cells in wound healing.
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.
53 citations
,
January 2009 in “Journal of Investigative Dermatology” In this study, UVB irradiation of organ-cultured human anagen hair follicles in vitro reduced hair elongation and increased cell death, affecting hair growth and regulatory processes.
90 citations
,
December 2008 in “Journal of Investigative Dermatology” Thyroid-stimulating hormone affects hair follicles but doesn't change hair growth or color.
59 citations
,
March 2008 in “The journal of investigative dermatology/Journal of investigative dermatology” This review examines the roles of Smad-4 and Smad-7 in hair follicle differentiation and development through BMP signaling and TGFβ/Activin/BMP pathway inhibition but reports no new experimental results.
141 citations
,
November 2007 in “Journal of Investigative Dermatology” This study found that balding dermal papilla cells show premature senescence and altered expression of stress and DNA damage markers, suggesting sensitivity to environmental stress in androgenetic alopecia.
106 citations
,
June 2005 in “Journal of Investigative Dermatology” This study defines classification criteria for hair follicle dystrophy using a mouse model of chemotherapy-induced alopecia, providing tools for standardized hair damage assessment.
52 citations
,
January 2005 in “International journal of experimental pathology” This study suggests that melatonin may have a radioprotective role against X-ray-induced skin damage in rats, as evidenced by milder injury markers in pretreated animals.
45 citations
,
June 2003 in “Journal of Investigative Dermatology Symposium Proceedings” This review discusses various in vitro and in vivo models for studying hair follicle function, noting their potential in developing new treatments for hair disorders but reports no new results.