October 2022 in “Benha Journal of Applied Sciences” In this case-control study, the researchers found that human beta-defensin 1 concentration was not a significant predictor of alopecia areata susceptibility or severity.
1 citations
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January 2020 in “Benha Journal of Applied Sciences” This study found that DEFB1 polymorphisms, specifically the rs1800972 CG and GG genotypes, may predict susceptibility to and severity of alopecia areata.
39 citations
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October 2013 in “Plastic and Reconstructive Surgery” In this study, researchers found that intestine-derived human alpha defensin 5 enhances wound healing, reduces bacterial load, and promotes hair growth in murine burn wound beds by increasing LGR stem cell migration.
1 citations
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December 2012 in “Papers on Anthropology” This study found that psoriatic skin lesions commonly express the cytokines IL-6, IL-8, and TNF-alpha along with a moderate presence of the antimicrobial protein defensin.
3 citations
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September 2016 in “Clinical, cosmetic and investigational dermatology” This study found that sphinganine may improve scalp health, hair quality, and reduce hair loss in males, potentially due to increased antimicrobial peptide levels and inhibition of 5-α-reductase.