Local ADSC Delivery Methods Accelerate Healing of Large Unburned Full-Thickness Skin Defects by Promoting an Optimal...

Area of Science:

• Regenerative Medicine
• Tissue Engineering
• Wound Healing Research

Background:

• Developing effective treatments for large skin defects is crucial.
• Adipose-derived stem cells (ADSCs) possess high self-renewal and differentiation capabilities.
• Investigating ADSC delivery methods for wound healing is an active area of research.

Purpose of the Study:

• To establish and utilize an experimental model for large, full-thickness skin defects.
• To evaluate the impact of ADSCs on wound healing and the wound microenvironment.
• To compare two distinct local ADSC application methods.

Main Methods:

• Created a large full-thickness skin defect model (approx. 30% TBSA) in rats.
• Groups included: ADSC injection, ADSC-seeded acellular dermal matrix (ADM), ADM alone, saline injection, and untreated control.
• Assessed wound healing and microenvironment parameters macroscopically, microscopically, and quantitatively.

Main Results:

• ADSC-treated groups exhibited the most favorable healing outcomes.
• Improved wound microenvironment observed from day 14 in ADSC groups.
• Complete wound closure achieved by day 32 only in the subdermal ADSC injection group.

Conclusions:

• Local application of ADSCs can accelerate wound healing.
• ADSCs favorably modulate the wound microenvironment.
• Subdermal ADSC injection demonstrated efficacy in a large skin defect model.