98 citations
,
December 1991 in “Annals of the New York Academy of Sciences” This study found that conserved DNA motifs and expression patterns in keratin genes suggest functional regulatory similarities in hair follicle differentiation across different mammalian species.
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.
11 citations
,
June 2001 in “British Journal of Dermatology” This study found that asynchronous differentiation in human anagen hair follicles involves specific localization of c-Myc and interrelated genes Max and Bin1 along the inner root sheath.
3 citations
,
December 1975 in “PubMed” This study found that acid and alkaline phosphatases serve different functions in Beagle dog skin, with ALP primarily involved in growth processes and ACP in phospholipid breakdown.
2 citations
,
October 2012 in “Experimental Dermatology” This study found that, despite the unchanged total level of 18-MEA, deletion of the Sox21 gene disrupts its attachment to the hair cuticle, increases cholesterol sulphate levels, and differentially affects ceramide composition.
March 2026 in “Journal of the mechanical behavior of biomedical materials/Journal of mechanical behavior of biomedical materials” This study investigated the mechanical response of the human hair cuticle to strain and found that cuticular deformation directly corresponded with fiber elongation, revealing significant molecular-level changes in disulfide crosslinks but maintained structural stability, highlighting the role of the cuticle in stress resistance.
September 2017 in “Journal of Investigative Dermatology” This study found that mackerel fermented fish oil protected human keratinocyte cells from UVB-induced oxidative stress by scavenging free radicals and reducing cellular damage.
356 citations
,
December 1986 in “The journal of cell biology/The Journal of cell biology” This study found that specific human hair keratins are differentially expressed in the hair follicle, suggesting a shared pathway of epithelial differentiation between hair cortex and nail plate cells.
57 citations
,
June 2003 in “American Journal of Physiology-cell Physiology” This study found that cyclosporin A treatment enhances hair growth in mice by inhibiting calcineurin-NFAT1 activity, which alters keratinocyte differentiation and apoptosis-related gene expression in hair follicles.
September 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” This study reports that the loss of Langerhans cells in lichen planopilaris scars may be linked to the downregulation of ITG αvβ6, which is not seen in other scar formation diseases.
146 citations
,
May 2002 in “The American journal of pathology” This study found that cathepsin L deficiency in mice led to significant abnormalities in hair follicle development and cycling, including disrupted hair shaft outgrowth and premature hair growth phase entry.
76 citations
,
May 2011 in “Cell death and differentiation” This study found that the enzyme A20 helps regulate EDAR-induced NF-κB signaling in mice, preventing ectodermal abnormalities like disheveled hair and assuring proper skin and appendage development.
24 citations
,
December 2014 in “International Journal of Molecular Medicine” In this study, researchers found that petroleum ether extract of Eclipta alba significantly stimulated follicular keratinocyte proliferation and reduced TGF-β1 expression in nude mice, suggesting potential use for certain types of alopecia.
January 2024 in “Uttar Pradesh journal of zoology” In this study, researchers found that chemical treatments like bleaching can cause severe damage to the hair cuticle, with previously modified hair showing complete deterioration compared to the partial degradation seen in virgin hair, highlighting the need for mindful cosmetic practices.
This study found considerable variation in hair shaft proteomic profiles among Caucasian, African-American, Kenyan, and Korean subjects, with individual and site-specific differences observed.
This study used proteomic profiling to reveal significant individual and site-specific differences in human hair shaft proteins, which may improve the differentiation of hair based on ethnic origin and individual identity.
2 citations
,
August 2020 in “Clinical, Cosmetic and Investigational Dermatology” This study found that a combination of oral compounds improved metabolic activity, cell viability, and proliferation in hair follicular keratinocytes, with L-cystine playing a key role in protection against oxidative stress.
1 citations
,
September 2017 in “Journal of Investigative Dermatology” This study reported that introducing the TERT and Bmi1 genes into mouse dermal papilla cells resulted in immortal cells capable of inducing new hair follicles in vivo, and human immortal DPCs were also developed.
September 2017 in “Journal of Investigative Dermatology” Certain products and treatments can improve hair health and growth.
44 citations
,
August 1990 in “PubMed” This study provides evidence for K1 and K10 derivatives' presence in the inner root sheath and hair cuticle, suggesting that these hair follicle parts may follow familiar keratinization principles.
42 citations
,
February 2017 in “Scientific Reports” In this study, researchers differentiated induced pluripotent stem cells into cells with dermal papilla-like properties, demonstrating their potential role in hair follicle bioengineering and drug testing for hair growth.
40 citations
,
February 2002 in “International Journal of Dermatology” In this study, hair damaged by permanent dye showed signs of recovery over time, with near complete restoration to its original state after eight weeks.
20 citations
,
July 2010 in “Skin Research and Technology” This study found that aging in Korean individuals is associated with changes in hair diameter and surface structure, as observed through atomic force microscopy.
17 citations
,
June 2011 in “The journal of investigative dermatology/Journal of investigative dermatology” This study observed that mice with a Cx43 mutation exhibited slower and asynchronous hair regrowth with severe cuticle weathering, mimicking aspects of hair phenotype in some ODDD patients.
10 citations
,
January 2010 in “International journal of trichology” This study found that keratin-associated proteins form part of the developing exocuticle and a-layer in hair fiber cuticle cells, while cornified envelope proteins were absent.
2 citations
,
January 2001 in “Biomedical Research” This study found that peptidylarginine deiminase type III and trichohyalin are coincidentally expressed in the infant rat hair follicle, but trichohyalin deimination occurs after their expression during development.
9 citations
,
April 2006 in “American Journal of Pathology” This study found that mutations in the Sgk3 gene cause defective hair follicle development and altered hair cycling in mice, with variable phenotypic outcomes depending on different dysfunction patterns of the SGK3 protein.
This study demonstrates that a novel autologous hair follicle-derived epithelial sheet can effectively repigment skin in patients with stable vitiligo, offering a potential new treatment option.
185 citations
,
June 2011 in “Molecular and cellular endocrinology” This review discusses the regulation and function of vitamin D and its receptor in skin cells, highlighting their roles in processes such as proliferation inhibition, differentiation, and innate immunity, but reports no new results.
96 citations
,
April 2007 in “Journal of Investigative Dermatology” In this study, co-grafting human keratinocytes with murine dermal papilla-enriched cells produced hair follicle-like structures, but without regular hair formation, suggesting anomalous folliculogenesis.