260 citations
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June 2011 in “Cell” Wnt signaling is crucial for pigmented hair regeneration by controlling stem cell activation and differentiation.
283 citations
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February 2011 in “Cell stem cell” 210 citations
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May 2006 in “The FASEB journal” Oxidative stress causes hair to gray by damaging and killing pigment cells.
16 citations
,
November 2005 in “The journal of investigative dermatology. Symposium proceedings/The Journal of investigative dermatology symposium proceedings” Hair color is determined by different melanins and changes with age.
105 citations
,
April 2005 in “Cell” Hair graying happens because certain cells aren't maintained properly.
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.
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.
130 citations
,
December 1998 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair follicle melanocytes die during hair regression.
188 citations
,
June 1998 in “Molecular cell” Researchers created a mouse with the same mutation as humans with trichothiodystrophy, showing similar symptoms and confirming the condition is due to defects in DNA repair and gene activity.
109 citations
,
July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair color production is closely linked to the active growth phase of hair in mice and may also influence hair growth itself.
385 citations
,
November 1990 in “Journal of Cell Science” Human hair follicles can grow in a lab setting.