Keratinocyte Stem Cells: Role in Aging

    March 2022 in “ IntechOpen eBooks
    Tuba M. Ansary, Kōji Kamiya, Mamitaro Ohtsuki
    TLDR Aging reduces skin stem cell function, leading to changes like hair loss and slower wound healing.
    The document discusses the role of keratinocyte stem cells in skin and hair aging. These cells, found in the skin's epidermis, dermis, and hair follicles, are responsible for skin regeneration, wound healing, and hair growth. However, their functionality declines with age, leading to skin aging symptoms such as alopecia, reduced hair density, and gray or thin hair. The document also highlights the role of interfollicular stem cells in epidermis regeneration and hair follicle stem cells in hair regeneration. Techniques used to study these cells include label retention, clonogenic assays, skin reconstitution, and genetic lineage tracing. Aging increases DNA damage and senescence in these cells, affecting their self-renewal capacity and leading to skin aging phenotypes. Chronic UV exposure can cause DNA damage, telomere shortening, and reduced stem cell renewal capacity. The aging of hair follicles is driven by the elimination of stem cells via COL17A1 proteolysis.
    Discuss this study in the Community →

    Research cited in this study

    33 / 33 results

    Related Community Posts Join

    6 / 22 results

      community New and Interesting HairLoss Studies/Papers/Reviews

      in Treatment  42 upvotes 4 years ago
      Hair loss treatments discussed include Dutasteride with Ketoconazole, tissue engineering strategies, and androgenetic alopecia therapies. Massage doubles follicular retention, improving treatment effectiveness.
      Diffuse hair loss and scalp biopsies

      community Diffuse hair loss and scalp biopsies

      in Research  692 upvotes 4 months ago
      Scalp biopsies are crucial for diagnosing hair loss conditions like Diffuse Unpatterned Alopecia (DUPA) and retrograde hair loss, as treatments like finasteride and dutasteride may not be effective if other conditions are present. Combining PPAR-GAMMA agonists with retinoids could improve treatments for conditions like Lichen Planopilaris.

      community Please explain this Minoxidil phenomena

      in Minoxidil  56 upvotes 1 year ago
      The post discusses the difference in effects of Minoxidil (Min) on scalp and facial hair. The user questions why Min-induced hair growth on the scalp is temporary, while facial hair growth seems permanent, even after stopping Min. They propose theories, including different Min mechanisms on body and facial hair, the role of DHT, and the possibility of not achieving fully terminal hair. The responses include personal experiences and theories about Min's effects on hair growth.

    Related Research

    3 / 3 results