December 2024 in “The Eurasia Proceedings of Science Technology Engineering and Mathematics” This study found that levels of gamma-glutamyl cysteine synthetase (ꝩ-GCS) were significantly higher in PCOS patients, suggesting a key role of glutathione metabolism in the disease's progression.
44 citations
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January 1984 in “Molecular and Cellular Biochemistry” 
100 citations
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March 2006 in “Journal of biological chemistry/The Journal of biological chemistry” This study found that cystatin M/E strongly inhibits human cathepsin V and cathepsin L via distinct non-overlapping sites, suggesting an important role in human epidermal differentiation and hair follicle morphogenesis.
September 2019 in “The journal of investigative dermatology/Journal of investigative dermatology” This study identified a mutation in the CST6 gene linked to a rare syndrome with symptoms affecting hair and skin, revealing cystatin M/E's role in maintaining epidermal homeostasis and hair follicle development.
10 citations
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November 2018 in “Genetics in medicine” This study identified a genetic variant in the CTS6 gene associated with a hypotrichosis syndrome, emphasizing the significant role of cystatin M/E in hair and skin health.