In this animal study, rats treated with recombinant human growth hormone (at both low and high doses) experienced quicker burn wound healing than controls, with increased micro vessel density and altered expression of vascular endothelial growth factor, alongside changes in oxidative stress and inflammation markers.
This study found that recombinant human type XVII collagen (rhCOL17A1) promotes hair growth by activating the Wnt/β-catenin and SHH/GLI signaling pathways and increasing type XVII collagen expression, with significant effects observed in both cell and mouse models.
May 2025 in “Acta Biomaterialia” This study developed microneedles combining insulin-like growth factor-1 and type XVII collagen, showing more effective hair regeneration and reduced inflammation compared to minoxidil in a mouse model of androgenetic alopecia.
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February 2021 in “Cells” This study concluded that using human umbilical cord blood mononuclear cells transfected with VEGF and FGF2 genes enhances skin wound healing in rats, demonstrating greater wound revascularization compared to controls.
November 2008 in “Medical & surgical dermatology” This study reports that a prototype device may accurately measure changes in hair quantity, diameter, and density in patients with balding by assessing the cross-sectional area of hair bundles.