January 2025 in “Nature Communications” This study discovered that calcium dependent protein kinase 1 (CPK1) directly activates cyclic nucleotide-gated channels 5, 6, and 9, promoting root hair growth in Arabidopsis by regulating Ca²⁺ signaling.
November 2024 in “Biochemical and Biophysical Research Communications” In this study, researchers observed that mutant mice with a genetic hair loss condition exhibited significant differential expression of genes related to keratinization and hair follicle formation, providing insights into potential strategies for understanding and treating alopecia.
July 2024 in “bioRxiv (Cold Spring Harbor Laboratory)” In this study, researchers observed that spontaneously mutated mice with a hair loss phenotype exhibited significant differential expression of genes related to keratinization and hair follicle formation, suggesting these mice could model human alopecia for future research and treatment development.
December 2023 in “Journal of ethnopharmacology” This study found that tribuloside, a flavonoid from Tribulus terrestris L., enhances melanin production in human melanocytes, zebrafish, and human skin samples without causing toxicity, potentially through inhibiting PDE to increase cAMP levels and promote the melanin biosynthesis pathway.
October 2023 in “International journal of molecular sciences” In this study, researchers analyzed the skin proteome of Alpine Merino sheep to identify proteins and pathways related to wool fiber diameter, finding that cyclic adenosine monophosphate and certain signaling pathways may play a role in this trait.
Caffeine in Alpecin shampoo may help prolong hair root activity and reduce hair loss.
January 2019 in “Institutional Repositories DataBase (IRDB)” This study achieved regeneration of hair follicle-like structures and erector muscle of hair in vitro by simulating cellular organization and applying mechanical stimuli.
January 2019 in “Institutional Repositories DataBase (IRDB)” This study developed in vitro methods to regenerate hair follicles and erector muscles by mimicking their native structures and mechanical conditions, reconstructing hair follicle-like structures and forming muscle-like tissues.
December 2017 in “Elsevier eBooks” Vitamin D receptor is crucial for hair growth, not vitamin D itself.
January 2014 in “Cosmoderma” This review examines the effectiveness of current treatments for androgenetic alopecia, offering plastic surgeons evidence-based guidance for choosing safe and effective options, but reports no new results.
This narrative review discusses the hormonal control of hair growth, particularly focusing on dihydrotestosterone and its role in the pilosebaceous unit and androgen-related hair conditions, and does not report new findings.
In this study, a two-year-old black Dobermann pinscher with progressive dorsal hair loss and folliculitis showed a partial response to prolonged omega-3/omega-6 fatty acid treatment.
December 2025 in “Animals” In this study on fine-wool sheep, researchers found that overexpressing the TGFBR1 gene decreased proliferation of dermal papilla cells by influencing multiple signaling pathways, suggesting TGFBR1 as a negative regulator in hair follicle development.
May 2024 in “Regenerative Therapy” This laboratory study found that dendrobium officinale polysaccharide (DOP) stimulated hair follicle and hair growth in mice by activating the WNT signaling pathway.
March 2022 in “Molecules” This study found that adenosine promotes hair growth by stimulating the Wnt/β-catenin pathway in cultured human dermal papilla cells through activation of the adenosine receptor.
297 citations
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January 2002 in “Development” In this study, repressing β-catenin/Lef1 signalling in mouse epidermis led to progressive hair loss, dermal cysts, and spontaneous skin tumors with sebaceous differentiation, indicating altered keratinocyte differentiation and potential tumourigenic processes.
176 citations
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February 2006 in “Cancer Research” This study found that loss of Ptch1 function in mouse skin's basal cells is sufficient to rapidly induce tumors resembling human basal cell carcinoma, suggesting Ptch1 as a key tumor suppressor.
136 citations
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March 1998 in “Oncogene” This study found that transgenic mice overexpressing E2F1 in their epidermis developed skin tumors, confirming in vivo that deregulated E2F1 activity can contribute to tumor development.
45 citations
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September 2012 in “The Journal of Steroid Biochemistry and Molecular Biology” This study found that deleting β-catenin in epidermis-specific VDR knockout mice did not prevent UVB-induced skin tumors, indicating β-catenin does not compensate for VDR's role in tumor suppression.
39 citations
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June 2013 in “Journal of Cosmetic Dermatology” This study found that combining herbal extracts with PRP increased human dermal papilla cell proliferation via ERK and Akt protein regulation, suggesting its potential for developing hair growth therapies.
39 citations
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December 2011 in “PLoS ONE” This study reported that exposure to 1,763 MHz radiofrequency radiation stimulated hair growth in vitro by inducing insulin-like growth factor-1 expression in cultured human dermal papilla cells.
36 citations
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October 2019 in “Cell Proliferation” This study reported that tryptanthrin, a compound found in indigo naturalis, effectively suppresses non-melanoma skin cancer in mice by reducing inflammation, inhibiting cell proliferation, and blocking specific signaling pathways associated with tumor growth.
31 citations
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February 2014 in “Journal of dermatological science” This study found that placental growth factor (PlGF) enhanced hair shaft elongation and accelerated hair follicle growth, suggesting its potential as a therapeutic target for alopecia.
29 citations
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January 2021 in “Journal of nanobiotechnology” In this study, exosome-mimetic nanovesicles derived from neural progenitor cells promoted hair follicle regeneration in mice by activating the Wnt/β-catenin signaling pathway.
27 citations
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December 2012 in “The Journal of Steroid Biochemistry and Molecular Biology” This study found that dexamethasone treatment reduced cell viability and growth factor expression in human dermal papilla cells, suggesting it inhibits hair growth.
24 citations
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January 2015 in “Annals of Dermatology” In this study, herbal extracts commonly used in traditional medicine were observed to significantly increase the proliferation of human dermal papilla cells, suggesting potential as alternative therapies for enhancing hair growth.
21 citations
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May 2018 in “Journal of Cosmetic Dermatology” This study found that costunolide promotes hair growth in both lab-cultured human hair follicle cells and in live mice by modulating growth factor pathways.
19 citations
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April 2015 in “European Journal of Pharmacology” This study found that dihydrotestosterone (DHT) may shorten the hair growth cycle through mechanisms like cell-cycle arrest and β-catenin downregulation in rat hair follicle cells.
14 citations
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June 2018 in “Frontiers in pharmacology” In this study, EGCG from green tea promoted mink hair follicle growth and cell proliferation at specific concentrations, potentially through activation of Shh and AKT signaling pathways.
13 citations
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August 2020 in “Frontiers in Cell and Developmental Biology” This study found that Twist1 and Tcf4 synergistically regulate the hair follicle induction ability of dermal papilla cells by forming a complex with β-catenin, enhancing their biological properties.