375 citations,
February 2006 in “Journal of Cell Science” The document concludes that the hair cycle is a complex process involving growth, regression, and rest phases, regulated by various molecular signals.
152 citations,
December 2003 in “Micron” As people age, their hair follicles produce less pigment, leading to gray and white hair, due to factors like reduced enzyme activity and damage to melanocyte DNA.
149 citations,
June 2010 in “The FASEB journal” miR-31 regulates hair growth by controlling gene expression in hair follicles.
127 citations,
December 2007 in “Journal of Investigative Dermatology” Mice hair growth patterns get more complex with age and can change with events like pregnancy or injury.
116 citations,
May 2013 in “Proceedings of the National Academy of Sciences of the United States of America” Hair grows faster in the morning and is more vulnerable to damage from radiation due to the internal clock in hair follicle cells.
111 citations,
March 1951 in “Annals of the New York Academy of Sciences” Understanding the mouse hair cycle is crucial for cancer research.
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.
103 citations,
January 2006 in “Journal of Cell Science” The document concludes that the hair cycle is a complex process involving growth, regression, and rest phases, regulated by various molecular signals.
97 citations,
March 2002 in “Molecular and cellular biology” Mutant CDP/Cux protein causes hair defects and reduced male fertility in mice.
92 citations,
September 2013 in “Journal of Investigative Dermatology” BMAL1 and Period1 genes can influence human hair growth.
92 citations,
November 2006 in “Proceedings of the National Academy of Sciences of the United States of America” BMP signaling controls hair follicle size and cell growth by affecting cell cycle genes.
91 citations,
May 2003 in “American Journal of Pathology” Prolactin affects hair growth cycles and can cause early hair follicle regression.
88 citations,
May 2005 in “Journal of Dermatological Science” Versican, a protein, is less present in thinning hair follicles and this decrease might contribute to common hair loss in men.
86 citations,
August 2000 in “Pigment cell research” Melanocyte activity in hair follicles is linked to the hair growth cycle, being active in growth phases and inactive in rest phases.
73 citations,
November 2000 in “Proceedings of the National Academy of Sciences of the United States of America” There are two ways to start hair growth: one needs Stat3 and the other does not, but both need PI3K activation.
68 citations,
April 2012 in “Journal of Investigative Dermatology” The conclusion is that Fgf18 and Tgf-ß signaling could be targeted for hair loss treatments.
67 citations,
July 1985 in “British journal of dermatology/British journal of dermatology, Supplement” Men's thigh hair grows longer and has a longer growth cycle than women's, but arm hair growth is similar between genders.
64 citations,
October 1998 in “Acta dermato-venereologica” Grape seed proanthocyanidins can promote hair growth.
61 citations,
January 2011 in “PloS one” Notch signaling is essential for healthy skin and hair follicle maintenance.
60 citations,
May 2014 in “British Journal of Dermatology” Caffeine affects hair growth and health differently in men and women.
57 citations,
April 2002 in “The journal of investigative dermatology/Journal of investigative dermatology” Vitamin D receptor is crucial for starting hair growth after birth.
52 citations,
October 2004 in “Veterinary dermatology” Melatonin and mitotane treatment led to hair re-growth in 62% of dogs with Alopecia X, but this was not always linked to normal hormone levels.
49 citations,
July 2019 in “British Journal of Dermatology” Wnt signaling is important for the change from the resting phase to the growth phase in human hair cycles.
48 citations,
March 2007 in “The journal of investigative dermatology/Journal of investigative dermatology” Retinoic acid production and signaling in hair follicles are regulated by location and timing, affecting hair growth and cycling.
41 citations,
June 2010 in “Journal of Investigative Dermatology” New cells are added to the hair's dermal papilla during the active growth phase.
41 citations,
November 2013 in “Experimental Dermatology” Leptin, a hormone, is important for starting hair growth.
40 citations,
December 2011 in “British Journal of Dermatology” Women's hair generally gets thinner and less dense starting in their mid-thirties, with hair loss becoming more common as they age due to both genetics and environment.
38 citations,
October 1988 in “Clinics in Dermatology” Hormones, nutrition, and seasonal changes regulate hair growth cycles, with androgens extending growth phases and factors like aging and malnutrition affecting hair loss and thinning.
38 citations,
April 2016 in “Experimental Dermatology” The document concludes that understanding hair follicle cell cycles is crucial for hair growth and alopecia research, and recommends specific techniques and future research directions.
36 citations,
October 2015 in “Cell reports” Gab1 protein is crucial for hair growth and stem cell renewal, and Mapk signaling helps maintain these processes.