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    Glossary Spermidine

    naturally occurring compound aiding cellular growth and hair health

    Spermidine is a naturally occurring polyamine compound found in ribosomes and living tissues, which plays a critical role in cellular growth, proliferation, and differentiation. It has been studied for its potential benefits in promoting hair growth and combating hair loss, as it can enhance autophagy, a cellular process that removes damaged components and supports cell renewal.

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    1. Spermidine/spermine-<i>N</i><sup>1</sup>-acetyltransferase: a key metabolic regulator AJP Endocrinology and Metabolism · 2008 · 305 citations
    2. Genetically Altered Expression of Spermidine/Spermine N1-Acetyltransferase Affects Fat Metabolism in Mice via Acetyl-CoA Journal of Biological Chemistry · 2006 · 128 citations
    3. Activation of Polyamine Catabolism Profoundly Alters Tissue Polyamine Pools and Affects Hair Growth and Female Fertility in Transgenic Mice Overexpressing Spermidine/SpermineN 1-Acetyltransferase Journal of Biological Chemistry · 1997 · 124 citations
    4. Spermidine Promotes Human Hair Growth and Is a Novel Modulator of Human Epithelial Stem Cell Functions PLOS ONE · 2011 · 61 citations
    5. Targeted expression of spermidine/spermine N1-acetyltransferase increases susceptibility to chemically induced skin carcinogenesis Carcinogenesis · 2002 · 54 citations
    6. Relation of Skin Polyamines to the Hairless Phenotype in Transgenic Mice Overexpressing Spermidine/Spermine N1-Acetyltransferase Journal of Investigative Dermatology · 2001 · 54 citations
    7. Overexpression of spermidine/spermine N1-acetyltransferase under the control of mouse metallothionein I promoter in transgenic mice: evidence for a striking post-transcriptional regulation of transgene expression by a polyamine analogue Biochemical Journal · 1999 · 43 citations
    8. Disturbed Keratinocyte Differentiation in Transgenic Mice and Organotypic Keratinocyte Cultures as a Result of Spermidine/Spermine N1-Acetyltransferase Overexpression Journal of Investigative Dermatology · 2005 · 37 citations
    9. Novel aspects of age-protection by spermidine supplementation are associated with preserved telomere length GeroScience · 2021 · 20 citations
    10. N1-methylspermidine, a stable spermidine analog, prolongs anagen and regulates epithelial stem cell functions in human hair follicles Archives of dermatological research · 2015 · 13 citations
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    1. Thoughts on this topical? Has a combination going on but are they really heavy hitters Reddit · 31 Jan 2026

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