January 2016 in “Journal of Investigative Dermatology” Some cells may slow melanoma growth, a protein could affect skin pigmentation, a gene-silencing method might treat hair defects, skin bacteria changes likely result from eczema, and a defensin protein could help treat multiple sclerosis.
1 citations
,
October 2017 in “Frontiers in Physiology” Hair follicle keratin may have been used in tooth enamel evolution.
158 citations
,
November 1998 in “Cell” β-catenin affects hair growth and can lead to tumors, needing more research for better understanding.
April 1996 in “Journal of Dermatological Science”
81 citations
,
June 2012 in “European journal of human genetics” Inherited ichthyoses cause widespread skin scaling and thickening due to gene mutations.
2 citations
,
December 2007 in “Microbial pathogenesis” Anthrax bacteria can infect and destroy hair follicles in mice, but the immune system eventually clears the infection.
12 citations
,
January 1934 in “Proceedings of the Royal Society of London Series B Containing Papers of a Biological Character” Stretched hair has a similar structure to natural silk, showing hair's elasticity involves reversible changes within its molecules.
March 2026 in “International Journal of Cosmetic Science” Pal-KCV peptide strengthens hair and reduces breakage by up to 52%.
January 1994 in “Nihon Chikusan Gakkaiho” Collagen fibrils in mink skin change structure during hair growth, becoming looser and thicker in the active phase.
Hair feels different when touched and rubs together in various ways.
71 citations
,
June 2005 in “Journal of Investigative Dermatology” PAD enzymes play a key role in hair growth and structure.
January 2024 in “bioRxiv (Cold Spring Harbor Laboratory)” The gene Ascl4 is not necessary for the development of hair, teeth, or mammary glands.
1 citations
,
January 1993 in “Skin Pharmacology and Physiology” Hair growth drugs and epidermal growth factor do not change the calcium binding site gradient in hair follicles.
January 2017 in “DR-NTU (Nanyang Technological University)” Keratin sponges are as biocompatible as collagen, but keratin gels are slightly less so.
14 citations
,
April 1976 in “Journal of Cutaneous Pathology” A calcified nodule on a boy's face came from hair follicles and expelled calcium through the skin.
1 citations
,
January 2014 Crataegus pinnatifida extract promotes hair growth in mice.
Keratin peptides in hair may help identify gender and ethnicity, but more research is needed.
January 2025 in “International Journal of Molecular Biology and Biochemistry” The Shindai method effectively extracts keratin from human hair, with potential uses in bioplastics and biofertilizers.
2 citations
,
September 2020 in “Biomedical materials” Recombinant keratin materials may better promote skin cell differentiation than natural keratin.
24 citations
,
July 2014 in “Journal of Investigative Dermatology” Nagashima-type palmoplantar keratosis in Asians is caused by a SERPINB7 gene mutation.
15 citations
,
January 1991 in “Mammalian Genome”
6 citations
,
January 2000 in “Dermatology” A girl's severely tangled hair couldn't be fixed and had to be cut due to a rare condition called plica neuropathica.
January 2025 in “Journal of the Egyptian Womenʼs Dermatologic Society” Higher substance P levels may cause discomfort in hair loss patients.
2 citations
,
September 2017 in “Biotechniques/BioTechniques” Researchers created a mouse cell line to study hair growth and test hair growth drugs.
17 citations
,
June 1990 in “PubMed” Hair varies in size and features depending on body region.
86 citations
,
May 2002 in “Journal of comparative neurology” Nerve growth in mouse skin and hair follicles happens in stages and is closely linked to hair development.
June 2022 in “Research Square (Research Square)” Nestin-expressing cells turn into a specific type of skin cell in hair follicles during development and in adults.
January 2005 in “Australian viticulture” Different tissues in cows have different types of cytokeratins.
80 citations
,
December 1996 in “Pain” Disruption of glycinergic circuits increases pain sensitivity, suggesting new pain treatment options.
August 2025 in “bioRxiv (Cold Spring Harbor Laboratory)” Root hair stiffness is mainly influenced by tip compression and turgor pressure.