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Phases of Wound Repair

Phases of Wound Repair

Following injury, the integrity of the injured tissues must be reestablished. For example, in skin tissue, wound repair involves coordination among resident skin cells, blood mononuclear cells, extracellular matrix, growth factors, and cytokines to complete the healing cascade.
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Healing is the physiological process by which the body restores the integrity and function of damaged tissues following injury. It involves a coordinated interplay of cellular proliferation, extracellular matrix remodeling, and growth factor signaling. The extent and nature of the tissue damage determine whether healing occurs by resolution, regeneration, or replacement.ResolutionResolution represents the most complete form of healing, occurring when the injury is minimal and tissue...

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Healing II: Complications

Complications during healing arise when tissue repair is altered by local or systemic factors. These changes involve abnormal collagen deposition, altered biomechanics, and reduced vascular supply, impairing restoration of normal structure and function.Loss of FunctionScar tissue differs significantly from the original tissue it replaces. In the skin, fibrosis lacks adnexal structures such as hair follicles, sebaceous glands, and sweat glands. Their absence reduces tactile sensitivity, impairs...

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Regeneration and repair processes are critical in healing damages caused by injury, disease, and aging. In regeneration, the damaged tissue is entirely replaced with new growth that restores the original architecture and function. In contrast, tissue repair usually results in a fixed tissue architecture involving scar formation. Scars generally do not reestablish tissue function and may also exhibit structural abnormalities at the injury site.
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Tissue Injury: Inflammation and Repair

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Formation of Blood Clot
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Related Experiment Video

Updated: May 20, 2026

Protocol to Create Chronic Wounds in Diabetic Mice

Protocol to Create Chronic Wounds in Diabetic Mice

Published on: September 25, 2019

The wound healing chronicles.

Jo A Van Ginderachter¹

¹VIB-Vrije Universiteit Brussels.

|July 24, 2012

Summary

Monocytes/macrophages are crucial for skin wound healing. Inflammatory monocytes promote early blood vessel growth, while epidermal growth factors aid later vascularization.

Area of Science:

Immunology
Cell Biology
Wound Healing Research

Background:

Monocytes and macrophages play dynamic roles in tissue repair.
Understanding the spatiotemporal contribution of these cells is key to improving wound healing outcomes.

Discussion:

This study elucidates the distinct roles of monocyte/macrophage subsets in sequential wound healing phases.
It highlights the critical involvement of CCR2-mediated inflammatory monocyte recruitment for early vascular sprouting.
The research identifies epidermal-derived vascular endothelial growth factor A (VEGF-A) as a key mediator of vascularization during later stages of healing.

Key Insights:

CCR2-mediated recruitment of VEGF-A-expressing inflammatory monocytes is essential for initial vascular sprouting in skin wounds.

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Protocol to Create Chronic Wounds in Diabetic Mice

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Murine Model of Wound Healing

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Epidermal-derived VEGF-A is crucial for mediating vascularization in the later phases of wound repair.

This work clarifies the sequential involvement of monocytes/macrophages throughout the entire wound healing process.

Outlook:

Targeting specific monocyte subsets or VEGF-A pathways could offer novel therapeutic strategies for chronic or non-healing wounds.
Further research into the cross-talk between immune cells and epithelial cells in wound healing is warranted.
This study provides a foundation for developing more effective regenerative medicine approaches for skin repair.