16 citations
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August 2000 in “Il Farmaco” Men have more tryptophan in their hair than women, and it increases with age and is higher in darker and grey or white hair.
15 citations
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February 2014 in “Journal of Investigative Dermatology” NF-κB activity is crucial for keeping hair in the growth phase.
July 2022 in “The journal of investigative dermatology/Journal of investigative dermatology” MPZL3 is important for controlling the hair growth cycle in mice and humans.
November 2025 in “Journal of Investigative Dermatology” NUL-5 may boost hair growth by improving hair follicle health and structure.
April 2023 in “Journal of Investigative Dermatology” IL-9/IL-9R signaling can negatively affect human hair growth and may be a target for treating hair loss conditions.
Collagen peptides may help maintain hair growth and could be beneficial for hair loss conditions.
July 2022 in “The journal of investigative dermatology/Journal of investigative dermatology” Blocking mTORC1 activity with rapamycin could help increase hair pigmentation and growth, potentially reversing gray hair.
April 2021 in “Journal of Investigative Dermatology” Leontopodium alpinum extract may help reduce hair shedding by keeping hair in the growth phase longer.
February 2025 in “Applied Sciences” Scenedesmus deserticola JD052 extracts may help hair growth and could be a natural treatment for hair loss.
79 citations
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October 1998 in “Genomics” Mouse keratin 6 genes evolved independently from human ones and are regulated differently.
65 citations
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May 2006 in “Journal of Structural Biology” Hair curliness is due to uneven distribution of different cortices within the hair fiber.
17 citations
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May 2010 in “Journal of Dermatological Science” Erythropoietin helps hair grow and could be a potential treatment for hair loss.
5 citations
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January 1990 in “Journal of Society of Cosmetic Chemists of Japan” Permanent wave lotion can extract proteins from hair, especially when pH is higher, and repeated treatments or bleaching can damage hair.
January 2003 in “Linchuang pifuke zazhi” Melanin granules can be expelled by exocytosis.
115 citations
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December 2001 in “Endocrinology” Expressing the human vitamin D receptor in skin cells prevents hair loss in certain mice.
57 citations
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April 2002 in “The journal of investigative dermatology/Journal of investigative dermatology” Vitamin D receptor is crucial for starting hair growth after birth.
21 citations
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December 2001 in “Endocrinology” Expressing the human vitamin D receptor in skin cells prevents hair loss in certain mice.
292 citations
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October 1985 in “The Journal of Cell Biology” Keratins and filaggrin change as fetal skin develops, marking key stages of skin formation.
79 citations
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June 1993 in “Molecular and Cellular Biology” The K5 promoter controls gene expression in skin cells, with specific DNA segments crucial for targeting and regulation.
19 citations
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April 1999 in “British Journal of Dermatology” Keratin 2e shows a unique pattern in developing fetal skin, different from other keratins.
16 citations
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November 2005 in “Journal of Clinical Pathology” CD1d expression in scalp skin and hair follicles changes with the hair cycle and may help protect against microbes.
5 citations
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September 2018 in “Journal of Investigative Dermatology” Keratinocyte cytokines and genetic variations influence the development of moles and skin pigmentation.
5 citations
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September 2009 in “Acta Ophthalmologica” Hyper-keratinisation in Meibomian glands contributes to gland dysfunction.
3 citations
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January 1991 in “Toxicology in Vitro” Hair follicle cultures are effective for studying cell communication and testing chemicals.
100 citations
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December 2002 in “Journal of biological chemistry/The Journal of biological chemistry” Researchers mapped and categorized specific keratin-associated protein genes on human chromosome 21q22.1.
67 citations
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August 2005 in “Journal of Investigative Dermatology Symposium Proceedings” Androgens promote beard growth but cause hair loss in androgenetic alopecia, with TGF-β1 as a potential treatment target.
64 citations
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January 2010 in “The FASEB Journal” Prolactin affects the production of different keratins in human hair, which could lead to new treatments for skin and hair disorders.
8 citations
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March 2004 in “Mammalian genome” KAP genes are crucial for hair development and show both shared and unique traits in humans, chimpanzees, and baboons.
7 citations
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June 2017 in “Omics” The study developed a method to analyze ancient hair proteins using very small samples.
4 citations
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January 2021 in “Archives of dermatological research” The study created a new model to better understand human hair growth and health.