Variation in Human Hair Ultrastructure Among Three Biogeographic Populations

    November 2018 in “ Journal of structural biology ”
    Sandra Koch, Mark D. Shriver, Nina G. Jablonski
    Image of study
    TLDR Different populations have distinct hair structures related to their ancestry.
    The study investigated the ultrastructure of human scalp hair, focusing on the density and distribution of melanosomes, cuticle thickness, and the relationship between hair fiber ultrastructure and biogeographic ancestry. Using transmission electron microscopy (TEM), the researchers analyzed hair cross-sections from three metapopulations: European, African, and East Asian. They found significant variation in hair cross-sectional shape, cuticle dimensions, and melanosome distribution, with these traits showing statistically significant patterns related to ancestry. The results contribute to a better understanding of human hair morphology variation and lay the groundwork for future research on the genetic and developmental factors influencing hair ultrastructure.
    Discuss this study in the Community →

    Research cited in this study

    19 / 19 results

    Related Community Posts Join

    6 / 1000+ results

      community The MPB itch aka DHT itch is very real.

      in Chat  9 upvotes 2 years ago
      Hair loss itch is caused by DHT attacking follicles and stimulating nerves. Finasteride users who respond well don't experience this itch.

      community Hair loss research is a money grab

      in Chat  212 upvotes 4 days ago
      Hair loss is linked to DHT, with treatments like finasteride and minoxidil being common but not definitive. Economic interests influence research, and there is potential for new treatments like PP405 and RU58841.

      community Hair fibers look like dandruff

      in Female  6 upvotes 4 days ago
      A woman using minoxidil for hair loss is trying hair fibers but finds they look like dandruff. Suggestions include using pomade, Derm Match, matte eye shadow, mascara, and spray applicators for a more natural look.

      community Why don’t more people use hair fibers?

      in Product  524 upvotes 2 weeks ago
      Hair fibers can effectively cover thinning hair when used with minoxidil and hairspray but require daily application and can be inconvenient in certain conditions. Some users prefer treatments like finasteride, dutasteride, microneedling, or wigs due to the maintenance and limitations of hair fibers.

      community Hair care products and shampoos

      in Product  2 upvotes 3 weeks ago
      People are discussing hair care products and shampoos, with some using ketoconazole 2% and others mentioning products like NATIVE brand and Dr. Bronner’s peppermint soap. There's a focus on scalp health and the potential benefits of certain shampoos for aiding minoxidil absorption.

    Similar Research

    5 / 1000+ results