March 2010 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Beard hair medulla cells have a unique and varied keratin pattern.
60 citations
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December 2003 in “Journal of Investigative Dermatology” K6hf is found in specific parts of hair follicles, nails, and tongue, and is linked to hair growth and structure.
87 citations
,
July 2009 in “The journal of investigative dermatology/Journal of investigative dermatology” Human beard hair medulla contains a unique and complex mix of keratins not found in other human tissues.
3 citations
,
March 2009 in “Hirosaki University Repository for Academic Resources (Hirosaki University)” Hirosaki hairless rats have sparse, twisted hair due to missing hair keratin genes.
6 citations
,
February 2013 in “British Journal of Dermatology” Androgens significantly regulate hair keratin K37 expression.
May 2010 in “Journal of Investigative Dermatology” January 2008 in “Medical Entomology and Zoology” 49 citations
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March 2004 in “Journal of Investigative Dermatology” The hHa7 gene is regulated by androgens in certain body hair, not scalp hair.
1 citations
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September 2018 in “International journal of research - granthaalayah” Human hair medulla doesn't break down hydrogen peroxide, which may affect hair color formation.
23 citations
,
January 1981 Hair is mostly made of three protein types: helical, high-sulfur, and high-tyrosine.
9 citations
,
February 2016 in “Anatomical Science International” Hair proteins change location and structure as hair cells mature.
Hair germ cells differ from epidermal cells in keratin expression, and specific keratins form after hair differentiation.
7 citations
,
December 2011 in “Annals of anatomy” Involucrin helps strengthen the inner parts of human hair.
65 citations
,
February 1992 in “Development” Type II keratin genes are crucial for hair follicle differentiation and have a conserved structure and expression pattern.
6 citations
,
November 1984 in “Acta Dermato Venereologica” Hair follicles and sweat glands show different keratin staining patterns.
93 citations
,
July 2006 in “Journal of Investigative Dermatology” K25, K27, and K28 are found in all inner root sheath layers of hair, while K26 is only in the cuticle.
21 citations
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November 2010 in “Journal of molecular medicine” FoxN1 gene is essential for proper thymus structure and preventing hair loss.
70 citations
,
February 2007 in “Journal of Investigative Dermatology” K39 and K40 are the last keratins expressed in hair development, completing the hair keratin catalog.
January 1963 in “Stain technology” Ziehl-Neelsen's stain helps identify different parts of hair in sheep and goats.
11 citations
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January 2012 in “Journal of cell science” Rac1 is essential for proper hair structure and color.
30 citations
,
July 2000 in “PubMed” Hair has unevenly distributed proteins and lipids, with lipids mainly in the cuticle and proteins in the cortex and medulla.
2 citations
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October 2022 in “Journal of structural biology” Older thin hair is not just thinner but also has different shape, structure, and stiffness.
2 citations
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December 2023 in “Royal Society of Chemistry eBooks” Hair is a complex organ, and understanding its detailed structure and growth phases is crucial for analyzing substances within it.
18 citations
,
November 2010 in “Journal of morphology” Antler velvet hair and body hair of red deer have different structures that help with protection and insulation.
17 citations
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June 2012 in “Journal of experimental zoology. Part B, Molecular and developmental evolution” Hair in mammals likely evolved from glandular structures, not scales.
8 citations
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May 2008 in “Applied surface science” Mummy hair from the Taklamakan desert has calcium and phosphorus inside.
25 citations
,
December 1973 in “Biochemical Journal” Guinea-pig hair and follicle proteins are mostly similar, but follicles have more group 2 proteins and fewer group 3 and 4 proteins.
15 citations
,
February 1999 in “The anatomical record” Some mutant mice have hair with abnormal cross-linking, mainly in the cuticle, not affecting other hair parts.
9 citations
,
January 1989 in “Sen'i Gakkaishi” Wool and hair fibers absorb moisture similarly due to their keratin structure, with the amount of non-crystalline areas affecting the moisture uptake.
research Hair
1 citations
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April 2023 in “Elsevier eBooks” Hair analysis can detect drug use but is costly and interpretation is complex.