Effect of Free Long-Chain Fatty Acids on Anagen Induction: Metabolic or Inflammatory Aspect?

    Xiao-wen Pan, Khava S. Vishnyakova, E. S. Chermnykh, Maxim V. Jasko, Alexander D. Zhuravlev, S. Verkhova, Yegor S. Chegodaev, Mikhail А. Popov, Nikita G. Nikiforov, Yegor E. Yegorov
    TLDR Free long-chain fatty acids can stimulate hair growth in mice.
    This study examines the impact of free long-chain fatty acids on hair growth, specifically the induction of the anagen phase in mice. It found that topical application of palmitate and oleate accelerates anagen onset, while lactate delays it. Experiments on 78 mice (24 young and 4 old we/we wal/wal mice, and 50 C57Bl/6 mice) showed that these fatty acids stimulate hair growth, with palmitic acid inducing an inflammatory response in monocytes but not in fibroblasts or keratinocytes. The study suggests that metabolic regulation, rather than inflammation, plays a significant role in hair growth. However, the applicability to human hair growth is uncertain due to the use of a mouse model.
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