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08:35
Demonstration of the Rat Ischemic Skin Wound Model
Published on: April 1, 2015
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Conditioned plasma promotes full-thickness skin defect healing in a rat model
Majid Zamani1, Saeid Kaviani1, Mehdi Yousefi2
1Department of Hematology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
Regenerative Therapy
|September 2, 2025
Summary
Conditioned plasma (CP) with polylactic acid (PLA) coated beads significantly enhances acute wound healing. This blood derivative improves epithelialization and collagen formation, outperforming platelet-rich plasma (PRP).
Area of Science:
- Biomedical Engineering
- Regenerative Medicine
- Wound Healing Research
Background:
- Blood derivatives like platelet-rich plasma (PRP) are used to promote wound healing.
- Different preparation methods yield distinct biological factor concentrations and clinical outcomes.
- Conditioned plasma (CP) offers a potential alternative, with varying efficacy depending on preparation.
Purpose of the Study:
- To evaluate the efficacy of conditioned plasma (CP) prepared with polylactic acid (PLA) coated beads for acute wound healing.
- To compare the wound healing performance of CP with PLA-coated beads against CP with bare beads and standard PRP.
- To analyze the impact of these blood derivatives on key wound healing parameters and growth factor concentrations.
Main Methods:
- Blood from donors was processed into PRP, CP with PLA-coated beads, and CP with bare beads.
- Growth factor concentrations (VEGF, PDGF, TGF-β, IL-1β, IL-1Ra) were quantified using ELISA.
- Animal models (rats) with induced full-thickness wounds were treated with the prepared blood derivatives or control (PBS).
- Wound closure, epithelialization, cellular infiltration, collagen deposition, and neovascularization were assessed histologically and via immunohistochemistry.
Main Results:
- CP preparations showed significantly higher concentrations of VEGF, PDGF, TGF-β, IL1-β, and IL-1Ra compared to PRP.
- CP with PLA-coated beads significantly accelerated wound closure and improved overall skin wound healing.
- Histological analysis revealed enhanced epithelialization, increased fibroblast proliferation, greater collagen formation, and reduced inflammatory cell infiltration in the CP with PLA-coated beads group.
Conclusions:
- Conditioned plasma (CP), particularly when prepared with PLA-coated beads, is effective in promoting acute wound healing.
- CP enhances wound healing by stimulating epithelialization, fibroblast activity, and collagen synthesis while mitigating inflammation.
- The findings suggest CP with PLA-coated beads is a promising therapeutic agent for improving wound repair outcomes.
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