Transplanted rat hair follicles grew hair and had increased but not fully restored nerve connections in mice.
40 citations,
March 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” Growing hair follicles have high mitochondrial activity and ROS in specific regions, aiding hair formation.
11 citations,
September 2016 in “Journal of virological methods” Rabies virus was found in specific skin cells of rabid dogs' muzzles, suggesting these cells could help diagnose rabies.
286 citations,
April 2009 in “The journal of neuroscience/The Journal of neuroscience” TRPA1 is crucial for mechanical sensitivity in skin sensory neurons.
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.
142 citations,
September 2020 in “Journal of neurophysiology” Young adults have about 230,000 tactile nerve fibers, decreasing 5-8% per decade with age.
3 citations,
April 2016 in “Wound Repair and Regeneration” Researchers successfully transplanted hair follicles in mice, which survived well and helped in wound healing.
86 citations,
March 2018 in “ACS Biomaterials Science & Engineering” MDP hydrogel heals wounds faster and better than other treatments in diabetic mice.
July 2020 in “The journal of investigative dermatology/Journal of investigative dermatology” The enzymes Tet1, Tet2, and Tet3 are important for the development of hair follicles and determining hair shape by controlling hair keratin genes.
April 2016 in “The journal of investigative dermatology/Journal of investigative dermatology” The back of the scalp has more nerve fibers than the front, which may explain why some people feel more sensitivity there.
April 2018 in “Journal of Investigative Dermatology” Light can activate hair growth through a pathway from the eyes to hair follicles.
42 citations,
February 2021 in “Signal Transduction and Targeted Therapy” Hair follicle regeneration possible, more research needed.
August 2023 in “International Journal of Molecular Sciences” The human scalp hair bulb contains different types of melanocytes with varying abilities to produce melanin.
April 2018 in “Journal of Investigative Dermatology” STIM1 is essential for sweat secretion.
September 2019 in “The journal of investigative dermatology/Journal of investigative dermatology” Mouse skin glands need healthy nerves to grow properly during hair growth phases.
June 2020 in “Journal of Investigative Dermatology” Scientists successfully grew mini hair follicles using human skin cells, which could help treat baldness.
109 citations,
December 1998 in “The Journal of Dermatology” Manipulating the catagen and telogen phases of hair growth could lead to treatments for hair disorders.
April 2018 in “Journal of Investigative Dermatology” Arrector pili muscle regulates hair follicle stem cells, DNA methylation needed for hair cycling, and Wnt/B-catenin signaling starts hair growth.
1 citations,
July 2013 in “Hair transplant forum international” Advancements in hair follicle culture have led to better understanding and potential treatments for hair loss.
January 2012 in “Methods in pharmacology and toxicology” Hair follicle culture helps study hair growth but has limitations in modeling the full hair cycle.
May 2018 in “Journal of Investigative Dermatology” DNMT3A is crucial for healthy skin and hair growth.
May 2018 in “Journal of Investigative Dermatology” Activating Wnt in skin cells controls the number of hair follicles by directing cell movement and fate.
24 citations,
January 2003 in “Journal of Investigative Dermatology” Blocking a specific receptor slows down hair loss in mice.
April 2018 in “Journal of Investigative Dermatology” Researchers found a substance in chicken egg yolk that helps hair grow.
99 citations,
January 2004 in “Progress in brain research” Neurotrophins are important for hair growth and could help treat hair loss.
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.
3 citations,
April 2018 in “Therapeutic Delivery” Hair follicle regeneration and delivery is complex due to many molecular and cellular factors.
53 citations,
March 2014 in “Growth Hormone & IGF Research” IGF-1 injections help mice grow more hair by increasing cell growth and blocking a hair growth inhibitor.
91 citations,
April 2011 in “Journal of Ethnopharmacology” Polygonum multiflorum extract helps grow hair by activating certain hair growth signals in mice.
7 citations,
June 2020 in “npj regenerative medicine” GDNF helps grow hair and heal skin wounds by acting on hair stem cells.