3 citations
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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.
May 2022 in “British Journal of Dermatology” In this case report, a 35-month-old girl with loose anagen hair syndrome experienced spontaneous resolution and hair regrowth within 24 months.
December 2025 in “Russian Journal of Skin and Venereal Diseases” In this study, researchers found that patients with non-scar alopecia exhibited thinner hair sacs and root sheaths compared to a control group, with significant thinning observed in cases of alopecia areata.
This study in Gansu alpine fine-wool sheep identified two SNPs in the KRT71 gene that significantly affect wool length, with distinct expression patterns observed in hair follicles, suggesting KRT71 as a candidate gene for enhancing wool production traits.
February 2023 in “Cosmoderma” Loose anagen hair syndrome causes easily shed hair but usually improves with time.
June 2020 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that genetic ablation of Tet genes in mice led to changes in hair structure and keratin gene expression, indicating a role for Tet-mediated 5hmC DNA oxidation in hair follicle development and cycling.
January 2019 in “Journal of Entomology and Zoology Studies” This study observed that in Assam Hill Goats, the primary hair follicles had larger diameters and more structural associations compared to secondary follicles, especially in ruminant-age groups.
January 2008 in “Bradford Scholars (University of Bradford)” This study supports that an antibody response against anagen-specific hair follicle antigens, including trichohyalin and keratin 16, may play a role in alopecia areata.
January 2000 in “Acta Academiae Medicine Militaris Tertiae” This study found that the distribution of hair keratin family proteins varies in normal scalp hair follicles, which may aid in identifying the origin of hair neoplasms.
December 1990 in “PubMed” This study observed that outer and inner root sheaths of human hair follicles are predominantly characterized by different glycoconjugates, suggesting a relationship between specific lectin labeling and follicle differentiation.
January 2017 in “Journal of clinical & experimental dermatology research” This study found that human embryonic and induced pluripotent stem cells differentiated into specific bulge stem cells and successfully formed new hair follicles when transplanted with mouse dermal cells in immunodeficient mice.
71 citations
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January 2011 in “Journal of cutaneous pathology” This case report describes the first confirmed instance of trichodysplasia spinulosa in a child with Down syndrome and leukemia, linking it to the TS-associated polyomavirus.
38 citations
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December 2006 in “Journal of Investigative Dermatology” Keratin patterns in hair follicles help understand hair growth and potential hair and nail disorders.
24 citations
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September 1997 in “PubMed” This study concludes that loose anagen hair can develop in adulthood and may be difficult to distinguish from telogen hair loss, with pathologic findings offering limited diagnostic insights.
20 citations
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February 1968 in “Journal of Histochemistry & Cytochemistry” This study reports that citrulline, uniquely found in the inner root sheath of hair follicles, can be specifically detected with the carbamido diacetyl reaction, resulting in a bright orange color.
October 2024 in “BMC Genomics” This study examined the cytodifferentiation stage of hair follicle development in cashmere goats, identifying nine cell populations and key regulatory pathways, including transcription factors and keratin genes, that may influence fiber quality and inform breeding strategies.
250 citations
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November 2003 in “The Journal of Cell Biology” This study found that BMP receptor IA is crucial for hair progenitor cell differentiation in mice, and its sequential inhibition and activation are necessary to generate a functioning hair shaft.
248 citations
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April 1988 in “Differentiation” In this study, researchers observed that trichocytic and epithelial cytokeratins have distinct expression patterns within various human and bovine hair follicle cells, contributing to understanding hair follicle development and growth.
210 citations
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February 2008 in “Nature genetics” This study found mutations in the P2RY5 gene that are linked to autosomal recessive woolly hair in Pakistani families, implicating it in hair texture determination.
179 citations
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June 2000 in “The American journal of pathology” This study reports that the asebia-2J mutation in mice affects sebaceous gland function and leads to hair follicle destruction, offering a model for human scarring alopecias.
165 citations
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September 2001 in “Genes & development” This study found that Cutl1 mutant mice experienced retarded lung differentiation and abnormal hair follicle morphogenesis, indicating the vital role of CDP in lung development and hair follicle cell-lineage specification.
151 citations
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August 2011 in “The EMBO Journal” The enzyme PA-PLA1α is important for proper hair follicle development.
146 citations
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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.
138 citations
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March 2007 in “Experimental cell research” This review discusses hair keratins and hair follicle-specific epithelial keratins and their association with inherited hair disorders, reporting no new clinical results.
132 citations
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August 2008 in “Development” This research found that Dlx3 plays a central role in hair formation and regeneration, with its absence leading to alopecia through disrupted differentiation and signaling pathways.
121 citations
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December 2001 in “American Journal of Dermatopathology” This study found that trichoblastomas and nodular basal cell carcinomas have similar cytokeratin expression patterns, indicating differentiation towards the outer root sheath epithelium.
108 citations
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October 2003 in “Journal of biological chemistry/The Journal of biological chemistry” This study documents that trichohyalin acts as a multi-functional cross-bridging protein in the inner root sheath of mouse hair follicles, enhancing mechanical strength by linking keratin filaments to the cell envelope.
97 citations
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March 2010 in “The American Journal of Human Genetics” A mutation in the KRT74 gene causes tightly curled hair.
78 citations
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May 2012 in “Journal of Investigative Dermatology” A specific gene mutation causes woolly hair and hair loss.
73 citations
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January 2004 in “Journal of the American Academy of Dermatology” Immunocompromised patients can develop skin and hair issues due to a virus.