46 citations
,
August 2003 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that phosphatidic acid promotes hair growth by stimulating cell proliferation and protecting against apoptosis in murine hair epithelial cells, unlike lysophosphatidic acid, which showed limited effects.
86 citations
,
May 2002 in “Journal of Investigative Dermatology” This study characterized a new human keratin, hK6irs1, specifically found in the inner root sheath of hair follicles, which suggests its role in the structural integrity and guidance of growing hair shafts.
36 citations
,
December 2002 in “Experimental dermatology” This study found that procyanidin B-3, a compound isolated from barley extract, may promote hair growth by enhancing hair epithelial cell growth and counteracting TGF-β1's growth-inhibiting effects in vitro and in vivo.
1 citations
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January 2001 in “Cosmetics and toiletries” This study found that purified apple juice containing procyanidin B-2 promoted hair growth in both mouse models and human clinical trials for male pattern baldness.
November 2025 in “Archiv für Pathologische Anatomie und Physiologie und für Klinische Medicin” This study examined 16 sporadic trichoblastic tumors and found that although one showed malignant transformation, clinical follow-up revealed no residual or metastatic disease. RNA sequencing indicated a high tumor mutational burden and absence of a UV-related signature, helping to distinguish these tumors from similar growths.
184 citations
,
September 2006 in “PLoS Genetics” This study found that loss of Apc due to K14-cre-mediated gene recombination in mice led to aberrant growth in ectodermally derived squamous epithelia, implicating its critical role in specifying epithelial cell fates during embryonic development.
13 citations
,
October 2010 in “Methods in molecular biology” This article discusses the development and research applications of human hair follicle organ culture techniques, highlighting its potential to explore biological processes beyond dermatology.
12 citations
,
June 2006 in “Anais Brasileiros de Dermatologia” This study reports that scalp biopsies in white adults usually have 16.5 hair follicles, primarily in the anagen phase, with male samples showing fewer follicular units but more fibrous tracts in certain areas.
8 citations
,
July 2015 in “European journal of histochemistry” This study found that Sox9 was variably expressed in most canine skin neoplasms, particularly in those originating from the hair follicle's bulge region, suggesting its potential as a stem cell marker.
September 2019 in “The journal of investigative dermatology/Journal of investigative dermatology” In this study, the researchers observed that post-radiation hair follicle repair in 3D architecture occurs through independent, long-range cell movements along the basal surface, resembling 2D healing processes.
This study found that supercritical fluid extraction of germinated perilla seed significantly promoted hair follicle cell proliferation and gene expression related to hair growth, suggesting its potential as a natural treatment for hair loss.
139 citations
,
August 2018 in “Development” This review discusses the dynamic, niche-driven regulation of stem cell states in tissue homeostasis and regeneration, focusing on epithelial stem cells in the mammalian skin, intestine, and lung, without providing new experimental results.
130 citations
,
April 2003 in “Journal of Investigative Dermatology” This study reports the cloning and expression details of two new human type II keratins, K6irs3 and K6irs4, in the hair follicle's inner root sheath, suggesting a distinct functional role related to hair structure.
33 citations
,
January 1997 in “Endocrinology” Testosterone was found to inhibit hair follicle epithelial cell proliferation in adult stumptailed macaques only when dermal papilla cells from bald scalps were present, and this effect was reversed by the antiandrogen RU 58841.
12 citations
,
May 2014 in “International Journal of Molecular Medicine” This study suggests that the water fraction of Chrysanthemum zawadskii extract promotes hair growth by inducing telogen hair follicles in mice to enter the anagen phase and stimulating cell differentiation.
3 citations
,
April 2018 in “Therapeutic Delivery” This editorial discusses advances in engineering techniques for hair follicle regeneration and highlights future potential but reports no original research findings.
This study found that inhibiting the Mitochondrial Pyruvate Carrier in human scalp hair follicles caused metabolic stress that halted cell proliferation and disrupted key signaling pathways, with these effects partially reversed by an integrated stress response inhibitor.
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.
27 citations
,
October 1998 in “Differentiation” Basonuclin helps identify and track hair follicle development and cycling in mice.
January 1998 in “Differentiation” Basonuclin is crucial for hair follicle development and cycling in mice.
86 citations
,
February 2012 in “Journal of Clinical Investigation” This review discusses recent advances in understanding hair follicle stem cell dynamics and interactions, but it reports no new experimental findings.
41 citations
,
July 1994 in “Journal of Dermatological Science” This review examines the differentiation potential of epithelial cells from various sources in hair follicle formation, concluding that complex interactions are required for hair-specific characteristics, which were achieved in vivo but not in vitro.
3 citations
,
December 2003 in “Archives of Pathology & Laboratory Medicine” This article reviews the distinctive features of cutaneous lymphadenoma, a variant of trichoblastoma, and its differential diagnosis, but it presents no new empirical results.
2 citations
,
August 2025 in “Reports — Medical Cases Images and Videos” In this case report, a rare melanotrichoblastoma tumor was identified in a 51-year-old female following the histological and immunohistochemical analysis of a lesion on the pubo-inguinal area, presenting with strong epithelial marker positivity and a low proliferative index.
March 2024 in “Journal of functional foods” This study found that both marine and bovine collagen peptides may help prevent hair loss by supporting epithelial hair follicle stem cell functions, with marine peptides maintaining hair in the growth phase and bovine peptides increasing stem cell presence in hair follicle regions.
February 2023 in “International journal of molecular sciences” This study used infrared spectral imaging to show for the first time the distribution of glypican-4 and glypican-6 in hair follicles across different growth phases, highlighting the potential of this technique for studying alopecia.
51 citations
,
February 2004 in “Journal of Investigative Dermatology” MCSP may help identify and regulate skin stem cells, affecting hair growth and regeneration.
32 citations
,
August 2006 in “Archives of Dermatological Research” This study found that dermal papilla and sheath cells can induce hair follicle formation in vitro and in vivo by interacting with hair follicle epithelial cells.
This study reviewed various methods and techniques aimed at overcoming limitations in culturing human hair follicles, specifically focusing on restoring the inductivity of hair follicle cells for successful hair regeneration.
February 2025 in “Stem Cell Research & Therapy” This study reviews advancements in hair follicle regeneration, discussing the benefits and limitations of methods such as organ germ assembling, stem cell induction, and bioprinting, while highlighting the challenges of replicating embryonic signals and finding suitable cell sources for clinical applications.