A Histopathological Study of Induced Open Wounds Treated With Urinary Bladder Submucosa Scaffold in Rabbits

Area of Science:

• Regenerative Medicine
• Biomaterials Science
• Wound Healing Research

Background:

• Accelerating wound healing is a significant clinical challenge requiring innovative therapeutic strategies.
• Extracellular matrix (ECM) components like collagen and hyaluronic acid are crucial for tissue repair.
• Animal-derived submucosal tissues are explored as potential ECM scaffolds for wound management.

Purpose of the Study:

• To evaluate the efficacy of decellularized calf bladder extracellular matrix (ECM) scaffold in accelerating wound healing.
• To compare the wound healing process in rabbits treated with ECM scaffold versus saline control.

Main Methods:

• Calf urinary bladders were processed to create a decellularized ECM scaffold (UBM).
• Standardized 2x2 cm wounds were created on rabbits; one side treated with UBM, the other with saline (control).
• Wound healing was assessed via visual inspection, size measurement, and histopathological analysis at 7, 14, and 21 days post-wounding.

Main Results:

• The UBM-treated group showed significantly accelerated wound healing compared to the control group from day 7 onwards.
• Wound contraction percentage was markedly higher in the ECM-treated group.
• Histopathological examination revealed complete epidermal layer and rete ridge formation with dermal fibroplasia in the UBM group, unlike the control group.

Conclusions:

• Decellularized calf bladder ECM scaffolds significantly promote and accelerate open wound healing.
• ECM scaffolds offer a promising biomaterial for enhancing wound regeneration and tissue repair.
• The use of ECM scaffolds presents an advantageous therapeutic option for managing various types of wounds.