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Related Concept Videos

Healing II: Complications01:24

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...
Clinical Applications of Epidermal Stem Cells01:19

Clinical Applications of Epidermal Stem Cells

Epidermal stem cells (EpiSCs) are mainly located at the basal layer of the epidermis. These cells repair minor injuries of the skin and replace dead skin cells. However, EpiSCs’ cannot heal severe wounds such as major burns or those from diabetes or hereditary disorders. In such cases, culturing the epidermal stem cells from the patient is possible and has yielded successful treatment options, such as laboratory-grown skin grafts. These grafts are synthesized using a patient’s own EpiSCs...
Healing I: Introduction01:11

Healing I: Introduction

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...
Overview of Regeneration and Repair01:19

Overview of Regeneration and Repair

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.
Regeneration
All animals have varying degrees of...
Phases of Wound Repair01:28

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.
Formation of Blood Clot
In case of deep injuries, trauma to blood vessels results in blood loss. In the meantime, phospholipids released from the ruptured endothelial cellular membrane are converted into arachidonic...
Skin Cancer01:30

Skin Cancer

Skin cancer is a type of cancer that occurs when there is an abnormal growth of skin cells, usually triggered by damage to the DNA within the skin cells. It is primarily caused by exposure to ultraviolet (UV) radiation from the sun or artificial sources like tanning beds. Skin cancer is the most common type of cancer worldwide, and its incidence continues to rise.
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...

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Related Experiment Video

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Visualizing Scar Development Using SCAD Assay - An Ex-situ Skin Scarring Assay
07:40

Visualizing Scar Development Using SCAD Assay - An Ex-situ Skin Scarring Assay

Published on: April 28, 2022

Matrix control of scarring.

Cecelia C Yates1, Richard Bodnar, Alan Wells

  • 1Department of Pathology, University of Pittsburgh, Pittsburgh, PA 15261, USA.

Cellular and Molecular Life Sciences : CMLS
|March 11, 2011
PubMed
Summary
This summary is machine-generated.

Wound healing can lead to excessive scarring. This study hypothesizes that the extracellular matrix, not just cellular issues, drives scar formation, impacting tissue repair.

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Area of Science:

  • Biomedical Engineering
  • Tissue Repair and Regeneration
  • Wound Healing Research

Background:

  • Wound repair typically restores organ function, but significant scarring can compromise tissue homeostasis.
  • Excessive, disorganized matrix deposition characterizes problematic scar tissue.
  • The transition from wound repair to scar resolution is poorly understood, especially scar inducers.

Purpose of the Study:

  • To investigate the role of the extracellular matrix in driving scar formation during wound healing.
  • To challenge the traditional view of scar formation as solely a result of cellular dysregulation.

Main Methods:

  • Hypothesis-driven research exploring the extracellular matrix's role in scar development.
  • Analysis of matrix deposition and organization in compromised tissues.

Main Results:

  • The extracellular matrix is proposed as a primary driver of scar formation.
  • Scarring may result from matrix-driven processes rather than solely from cellular dysfunctions.

Conclusions:

  • The extracellular matrix plays a critical, potentially causative, role in scar formation.
  • Understanding matrix dynamics is key to developing strategies to limit pathological scarring.