Pooled, Frozen, Gamma-Irradiated Amniotic Fluid Enhances Histomorphological Remodeling in Hypertrophic Scars
October 2025
in “
International Wound Journal
”
Studysummary In a study using a rat model of hypertrophic scars, researchers found that gamma-irradiated human amniotic fluid improved wound healing, collagen remodelling, immune response, and scar characteristics more effectively than saline or non-irradiated amniotic fluid, indicating its potential for clinical applications in scar management. Our plain-language summary of this paper — not a Tressless recommendation.
The study demonstrates that pooled, frozen, gamma-irradiated human amniotic fluid (PFI-hAF) significantly enhances the healing of hypertrophic scars in a rat model. PFI-hAF accelerates the remodeling process, leading to reduced fibrosis, improved tissue organization, and increased hair follicle density compared to control groups. It promotes reepithelialization, enhances M2 macrophage activity, and improves collagen organization, resulting in more organized collagen structures and reduced scar width. These findings suggest that PFI-hAF is a promising, minimally manipulated treatment for wound care, offering practical advantages such as room-temperature stability and reduced risk of contamination, with potential applications in regenerative medicine.
