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Updated: Aug 10, 2026

In Vitro Model of Human Cutaneous Hypertrophic Scarring using Macromolecular Crowding
Published on: May 1, 2020
Pathological scarring: strategic interventions
R O'Leary1, E J Wood, P J Guillou
1School of Medicine, University of Leeds, Leeds, UK.
Abstract:
Aberrant cutaneous scar formation is a substantial cause of postoperative morbidity. There is at present no clear consensus on the best way to prevent or treat such scarring, although recently there has been considerable progress in developing an understanding of the mechanisms of tissue repair and scarring. We carried out a literature review using Medline to establish the current understanding of the key events occurring during tissue repair and to identify potential causes of scarring. We now review the key events during tissue repair and the pathogenesis of fibroproliferative disease. Tissue repair is achieved through a multistranded, elegantly coordinated process within which the balance between synthesis and breakdown of matrix is upset during fibrotic disease. Scars form because the signals directing tissue repair are not correctly terminated, and while the initiation and propagation of repair is well understood the signals that direct its cessation have yet to be elucidated.
Insights
Aberrant scar formation after surgery is common. Understanding tissue repair signals is key to preventing excessive scarring, but signals for stopping repair are not yet fully understood.
Area of Science:
- Wound healing and tissue repair
- Fibroproliferative diseases
- Dermatology and surgical outcomes
Background:
- Aberrant cutaneous scar formation significantly impacts postoperative morbidity.
- Current strategies for scar prevention and treatment lack consensus.
- Recent advancements offer insights into tissue repair and scarring mechanisms.
Purpose of the Study:
- To review key events in tissue repair.
- To identify potential causes of aberrant cutaneous scarring.
- To understand the pathogenesis of fibroproliferative diseases.
Main Methods:
- Conducted a literature review using the Medline database.
- Focused on understanding the mechanisms of tissue repair.
- Identified factors contributing to scar formation.
Main Results:
- Tissue repair is a complex, coordinated process.
- Fibrotic diseases disrupt the balance between matrix synthesis and breakdown.
- Scarring occurs when tissue repair signals are not properly terminated.
Conclusions:
- The initiation and progression of tissue repair are well-understood.
- The signals that terminate the tissue repair process remain elusive.
- Further research into scar cessation signals is needed for improved clinical management.
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