19 citations
,
July 2012 in “Biotechnic & Histochemistry” This study observed that decreased nucleolar organizing region protein synthesis in hair root cells is correlated with hair loss in humans.
17 citations
,
June 2012 in “Journal of experimental zoology. Part B, Molecular and developmental evolution” This review explores theories on the evolution of hair from synapsid scales and glands, proposing mechanisms supported by comparative studies, but reports no new experimental findings.
17 citations
,
March 2012 in “Journal of biological chemistry/The Journal of biological chemistry” In this study, researchers found that overexpression of the hairless protein in Hr mutant mice disrupts inner root sheath formation by downregulating Dlx3 and associated keratins in hair follicle development.
16 citations
,
April 1978 in “Genetics Research” This study found that asebic mice exhibit abnormal sebaceous gland differentiation and insufficient sebum production due to defective regulation of cell processes, despite possessing normally developing sebaceous glands initially.
14 citations
,
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
,
December 2019 in “Nutrients” In human follicular cells, this study found that an Annurca apple-based dietary supplement may stimulate the production of hair keratins, suggesting potential benefits for hair growth.
13 citations
,
December 1983 in “Canadian journal of zoology” This study found that mesenchymal cell processes from the dermal papilla contact epithelial hair matrix cells through gaps in the basal lamina during hair matrix cell differentiation in mouse vibrissa follicles.
12 citations
,
October 2020 in “Scientific Reports” In this study, Nec-1s was found to promote hair growth and may target necroptosis and the Wnt/β-catenin pathway for potential treatment of hair loss.
11 citations
,
August 2014 in “PLoS ONE” This study found that GFRα2 influences cell size but not survival or target innervation of Ret-positive low-threshold mechanoreceptors in mouse dorsal root ganglia, differing from its role in nonpeptidergic nociceptors.
11 citations
,
September 2012 in “The journal of investigative dermatology/Journal of investigative dermatology” This study identified a missense mutation in the keratin 71 gene as the cause of autosomal dominant woolly hair/hypotrichosis in a Japanese family, marking the first human mutation in KRT71 linked to a hair disorder.
11 citations
,
January 2012 in “Journal of cell science” This study demonstrates that Rac1 activity is essential for normal hair follicle formation but influences hair structure and pigmentation, in terminal differentiation, through alterations in hair shaft, cuticle, and pigmentation organization.
10 citations
,
December 2021 in “Frontiers in cell and developmental biology” This study used single-cell RNA sequencing to map the cellular composition of sheep hair follicles, revealing differentiation pathways and potential molecular mechanisms for wool curvature, which may inform sheep breeding.
10 citations
,
August 2018 in “Experimental Dermatology” This study found that DECORIN promotes the proliferation and migration of outer root sheath keratinocytes in vitro and maintains the hair anagen phase in mice.
9 citations
,
July 2008 in “Archives of Dermatological Research”
8 citations
,
January 2014 in “Annals of Dermatology” This study found that TGF-β1 expression in follicular tumors correlates with differentiation degree and suggests its potential role alongside p63 in differentiating between sebaceous and follicular tumors.
7 citations
,
November 2022 in “Communications biology” This study found that injecting keratin into the skin of mice promoted hair growth, potentially through keratin's interaction with hair-forming cells and changes in the microenvironment.
6 citations
,
April 1996 in “Journal of histochemistry and cytochemistry/The journal of histochemistry and cytochemistry” This study suggests that TGF-alpha may function in an autocrine or juxtacrine manner rather than promoting cell proliferation during hair growth cycles in ferrets and sheep.
5 citations
,
March 2001 in “Journal of biomechanics” This study found that anagen hairs require less force to be extracted than telogen hairs in an in vitro pig skin model, indicating different anchorage mechanisms.
5 citations
,
July 1999 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” The researchers reported that applying proteolytic enzymes to mice skin negatively affected hair follicles, leading to degeneration and potential impairment of stem cells from the bulge area.
3 citations
,
February 2019 in “Animal biotechnology” In this study, the PLP2 gene was found to promote secondary hair follicle development in Liaoning cashmere goats, with its expression negatively regulated by melatonin and potentially affecting follicle development via the BMP pathway.
3 citations
,
July 2011 in “Folia Histochemica et Cytobiologica” This study concluded that the inner root sheath inhibits the expression of certain differentiation markers in hair bulbs, with calcium-induced changes paralleling those seen in hair follicle mid-segments.
2 citations
,
October 2023 in “Science advances” In this study, researchers demonstrated that human hair follicle outer root sheath cells release ATP, serotonin, and histamine in response to mechanical stimulation, which subsequently activates surrounding sensory neurons.
2 citations
,
September 2022 in “Organoid” In this study, the researchers developed a new protocol using human-induced pluripotent stem cells to efficiently create skin hair follicle organoids, which may aid in optimizing hair follicle growth and exploring treatments for alopecia.
2 citations
,
May 2021 in “International journal of molecular sciences” This study demonstrated that autologous mesenchymal stem cells from hair follicles, when combined with a novel gelatin-based hydrogel, showed promising osteogenic potential and could offer a non-invasive alternative for bone regeneration.
2 citations
,
January 2020 in “BioMed Research International” This study found that Phaeodactylum tricornutum extract enhanced hair follicle cell proliferation, indicated by increased keratin and ERK1/2 signaling, suggesting its potential for hair care applications.
2 citations
,
November 2003 in “Humana Press eBooks” This article explains the significance of culturing the pilosebaceous unit for studying related diseases and skin epithelial stem cells, but it reports no new findings.
This study observed that activating the Wnt/β-catenin pathway enhances hair follicle stem cell proliferation and differentiation, promoting hair growth and wound healing, and demonstrated the potential for outer root sheath transplants to aid skin repair, although challenges remain for clinical application.
April 2026 in “Frontiers in Physiology” This study evaluated nanovesicles derived from Polygonum multiflorum roots, finding that they promote dermal papilla cell proliferation and activate β-catenin signaling, which in turn enhances hair shaft elongation in ex vivo cultured human hair follicles, suggesting their potential use for alopecia treatment.
November 2025 in “Archaeometry” This study analyzed animal hairs from 18th-century burial sites in Mazamet, France, reporting distinct hair morphologies consistent with the use of common local animal furs such as goat, badger, cow, or horse, reflecting the modest socioeconomic status of the individuals interred.
November 2025 in “Nature Communications” This study used a 3D live imaging system to map cell dynamics in human hair follicles, revealing patterns of cell movement and division that help explain hair fiber extrusion during hair growth.