Peptide-Based Functional Amyloid Hydrogel Enhances Wound Healing in Normal and Diabetic Rat Models

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Wound Healing Research

Background:

• Chronic wounds pose significant burdens due to delayed healing.
• Amyloid hydrogels mimic the extracellular matrix, offering potential as wound scaffolds.
• Developing effective wound dressings is crucial for improving patient outcomes.

Purpose of the Study:

• To fabricate and evaluate a peptide-based amyloid hydrogel as a wound dressing.
• To assess the hydrogel's efficacy in promoting skin tissue regeneration in vitro and in vivo.
• To investigate the hydrogel's impact on wound healing dynamics in normal and diabetic models.

Main Methods:

• Fabrication of a peptide-based amyloid hydrogel.
• In vitro assessment of cell migration, proliferation, and collagen remodeling.
• In vivo wound healing studies in normal and diabetic rat models.
• Histological analysis (Hematoxylin and eosin staining) of wound tissues.

Main Results:

• The amyloid hydrogel enhanced cell migration, proliferation, and collagen remodeling.
• Accelerated wound closure was observed: 9 days in normal rats and 15 days in diabetic rats.
• Histological analysis showed faster dermal bridging, angiogenesis, and epidermal repair.
• The hydrogel promoted fibroblast growth, cytokine release, reduced inflammation, and increased collagen production.

Conclusions:

• Amyloid-based hydrogels show significant promise for accelerating acute and chronic wound healing.
• The hydrogel facilitates key aspects of skin regeneration, including cellular activity and tissue remodeling.
• This biomaterial offers a potential therapeutic strategy for managing complex wounds.