22 citations
,
February 2002 in “Journal of theoretical biology” The model showed that randomness accurately describes individual hair growth cycles and that synchronization can cause large fluctuations not seen in humans.
29 citations
,
January 2017 in “Journal of Investigative Dermatology” The Msi2 protein helps keep hair follicle stem cells inactive, controlling hair growth and regeneration.
October 2019 in “Innovative Journal of Medical and Health Science” Certain herbs may help treat hair loss by extending hair growth phases.
19 citations
,
April 2015 in “International Journal of Molecular Sciences” The research identified genes and pathways important for sheep wool growth and shedding.
34 citations
,
May 2013 in “Journal of the European Academy of Dermatology and Venereology” Hair growth slows and shedding increases after childbirth, but most women don't experience excessive hair loss.
53 citations
,
November 2006 in “Journal of Endocrinology” Prolactin slows down hair growth in mice.
2 citations
,
May 2022 in “Stem cell research & therapy” Disrupted stem cell signals in hairpoor mice cause hair loss.
4 citations
,
July 1979 in “Journal of the American Academy of Dermatology” The hair and oil glands react by changing structure when stressed.
February 2019 in “bioRxiv (Cold Spring Harbor Laboratory)” Cashmere goat hair growth follows a cycle with distinct growth, regression, and resting periods, influenced by specific genes.
January 2022 in “Figshare” Melatonin affects when and how goat hair follicle genes turn on and off during growth cycles.
237 citations
,
February 2016 in “Science Translational Medicine” The timing of when the gene Bmal1 is active affects aging and survival, with its absence during development, not adulthood, leading to premature aging.
35 citations
,
July 2018 in “Cell Reports” The study found that a specific area of the hair follicle helps start hair growth by reducing the blocking effects on certain cells and controlling growth signals.
1 citations
,
January 2004 in “Adelaide Research & Scholarship (AR&S) (University of Adelaide)” SPARC likely aids in tissue remodeling during the hair cycle, not in starting new hair growth phases.
January 2012 in “Zhongguo linchuang xinlixue zazhi” Chronic stress delays hair growth in mice, but antioxidants can help reverse this.
2 citations
,
June 2001 in “American Journal of Pathology” The document concludes that understanding how hair follicles naturally die and regenerate is important for insights into organ development and could impact health and disease treatment.
16 citations
,
January 1998 in “Dermatology” Androgens may worsen a natural hair resting phase, possibly leading to hair loss.
13 citations
,
June 2020 in “Scientific reports” Melatonin stimulates the skin components of ram's scrotum during their non-breeding season.
August 2020 in “Current psychopharmacology” Pregnancy and nursing increase certain brain activities in rats, but these changes disappear when the babies are taken away.
January 2010 in “Chinese journal of clinical anatomy” Hair follicles in C57BL/6 mice develop rapidly from late embryonic stages to shortly after birth, with key growth and regeneration phases identified.
1 citations
,
April 2001 in “Biological Rhythm Research” Deuterium oxide extends the hair cycle duration in mice without changing hair structure.
August 2025 in “International Journal of Pharmaceutics” A new finasteride treatment may quickly and effectively promote hair regrowth.
84 citations
,
August 1991 in “British Journal of Dermatology” Most children treated with diphencyprone regrew some or all of their hair.
19 citations
,
February 1998 in “Cellular Immunology” Hair growth phase in mice weakens certain immune responses.
2 citations
,
August 1995 in “Acta agriculturæ Scandinavica. Section A, Animal science” Adult male raccoon dogs shed their winter fur in spring and grow new fur for winter in autumn.
7 citations
,
November 2014 in “Histochemistry and Cell Biology” The we/we wal/wal mice have defects in hair growth and skin layer formation, causing hair loss, useful for understanding alopecia.
April 2018 in “Journal of Investigative Dermatology” Glycogen metabolism is important for energy and processes in human hair follicles, and hair follicles may produce glucose from lactate.
13 citations
,
January 1993 in “Archives of dermatological research” Human hair follicles can grow and stay healthy for up to 8 days in a lab setting.
2 citations
,
December 2024 in “BMC Genomics” Key genes and pathways control sheep hair growth phases.
1 citations
,
August 2018 in “Journal of Investigative Dermatology” Muse cells keep their special features and can become different cell types even after being frozen and thawed three times.
October 2020 in “Research Square (Research Square)” Aging-related changes in hair follicle stem cells can be partially reversed with a specific treatment.