76 citations,
March 2005 in “Journal of Molecular Medicine” Certain mice without specific receptors or mast cells don't lose hair from stress.
23 citations,
March 2010 in “Medical hypotheses” Merkel cells may have roles in sensing magnetic fields, creating fingerprints, Reiki energy healing, passing on environmental information to offspring, and influencing hair shape.
28 citations,
October 2019 in “Seminars in Cell & Developmental Biology” Hair can regrow in large wounds through a process similar to how hair forms in embryos, and understanding this could lead to new treatments for hair loss or scarring.
5 citations,
January 1983 in “Australian journal of biological sciences” Certain amino acid analogues can inhibit wool and hair growth and affect fiber strength.
27 citations,
January 2010 in “Animal” South American camelids should be sheared early, fleece type affects fiber quality, and the S/P follicle ratio doesn't distinguish between Bolivian llama genotypes.
4 citations,
April 2020 in “bioRxiv (Cold Spring Harbor Laboratory)” The skin has about 230,000 touch-sensitive nerve fibers, with high concentrations in the hands and face.
46 citations,
May 2012 in “Molecular and Cellular Endocrinology” Human skin produces sex hormones like estrogen and testosterone, influenced by ARO and StAR, which may affect skin elasticity and hair growth.
6 citations,
December 2019 in “BMC Complementary and Alternative Medicine” Alcohol extract from Vernonia anthelmintica seeds may help treat stress-related hair loss.
142 citations,
September 2020 in “Journal of neurophysiology” Young adults have about 230,000 tactile nerve fibers, decreasing 5-8% per decade with age.
101 citations,
August 2003 in “Journal of comparative neurology” Naked mole-rats have unique skin and hair nerve structures, lacking certain pain and temperature-related neuropeptides.
40 citations,
January 2016 in “Elsevier eBooks” The skin is the largest organ, protecting the body, regulating temperature, and producing hormones.
11 citations,
November 2009 in “Brazilian Journal of Medical and Biological Research” Young C57BL/6 mice heal better than BALB/c mice, and older mice heal faster but regenerate worse.
349 citations,
January 2005 in “The FASEB journal” Human skin can make serotonin and melatonin, which help protect and maintain it.
13 citations,
June 2020 in “Scientific reports” Melatonin stimulates the skin components of ram's scrotum during their non-breeding season.
1 citations,
March 1989 in “Proceedings of the British Society of Animal Production” Hormones and daylight changes control when cashmere goats shed their hair.
August 2024 in “Biophysics Reviews” Mammal hairs have different internal structures.
75 citations,
October 2010 in “Mammalian genome” Sphynx cats are hairless and Devon Rex cats have curly hair due to specific genetic mutations.
8 citations,
September 2003 in “Journal of dermatological science” Substance P helps hair grow longer and faster.
7 citations,
October 2000 in “Allergo Journal” Stress may affect hair growth by influencing hair follicle development and could contribute to hair loss.
108 citations,
July 2004 in “American Journal of Pathology” Stress increases a factor in mice that leads to hair loss, and blocking this factor may prevent it.
87 citations,
January 2016 in “Development” Blocking β-catenin in skin cells improves hair growth during wound healing.
64 citations,
March 2005 in “Journal of Investigative Dermatology” Brain-Derived Neurotrophic Factor (BDNF) slows down hair growth and promotes hair follicle regression.
32 citations,
January 2005 in “Advances in Biochemical Engineering / Biotechnology” Fetal wounds heal without scarring because of different biological factors, which could help improve adult wound healing.
24 citations,
February 2006 in “Chinese Medical Journal” Cultured dermal papilla cells can regenerate hair follicles and sustain hair growth.
16 citations,
December 2019 in “Animals” Overexpressing Tβ4 in goats' hair follicles increases cashmere production and hair follicle growth.
10 citations,
September 2018 in “Regenerative Medicine” New hair can grow from large wounds in mice, but less so as they age, involving reprogramming of skin cells and specific molecular pathways.
9 citations,
February 2022 in “Archives animal breeding/Archiv für Tierzucht” A circular RNA helps cashmere goat hair cells become hair follicles by blocking a molecule to boost a gene important for hair growth.
3 citations,
April 2011 in “Microscopy research and technique” Teratoma hair is similar to scalp hair but has a rougher surface and lower adhesive force.
July 2022 in “Research Square (Research Square)” Certain miRNAs may play a role in sheep hair follicle development, which could help improve wool production.
January 2015 in “Springer eBooks” Hair health is influenced by genetics, aging, and environmental factors, with proper care needed to maintain it.