Related Experiment Video
Updated: Jun 12, 2026
07:40
Visualizing Scar Development Using SCAD Assay - An Ex-situ Skin Scarring Assay
Published on: April 28, 2022
[Expression of mast cell tryptase in scar]
Feng Gao1, Yang Zhao, Yong-qiang Feng
1Provincial Hospital Affiliated to Shandong University, Jinan 250021, China.
Zhonghua Zheng Xing Wai Ke Za Zhi = Zhonghua Zhengxing Waike Zazhi = Chinese Journal of Plastic Surgery
|June 15, 2010
Summary
Mast cell tryptase (MCT) is significantly elevated in keloid scars compared to hypertrophic scars and normal skin. This suggests MCT plays a key role in scar formation and development.
Area of Science:
- Biochemistry and Molecular Biology
- Dermatology and Wound Healing Research
Context:
- Scarring is a complex biological process following tissue injury.
- Keloids and hypertrophic scars represent abnormal wound healing responses.
- Mast cell tryptase (MCT) is an enzyme implicated in inflammation and tissue remodeling.
Purpose:
- To determine the expression and localization of mast cell tryptase (MCT) in scar tissue.
- To compare MCT gene expression levels in keloid scars, hypertrophic scars, and normal skin.
Summary:
- Immunofluorescence and real-time PCR revealed MCT primarily in superficial scar collagen.
- MCT mRNA expression was significantly higher in keloids (2.5x hypertrophic, 5.4x normal skin).
- MCT gene expression levels correlate with scar severity, being highest in keloids.
Impact:
- Findings indicate a potential role for MCT in the pathogenesis of scar formation.
- MCT may serve as a biomarker for abnormal scarring.
- Further research into MCT could lead to targeted therapies for scar management.
Related Concept Videos
01:19Clinical 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...
01:24Healing 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...
01:38Inflammation
Overview
01:24Inflammatory Response II: Inflammatory Exudate and Tissue Repair
The immune system's inflammatory response destroys the invading pathogen, permitting the tissue to heal. The changes during the cellular and vascular stages allow exudate formation at the site of inflammation. The inflammatory exudate released from the wound has high protein content and a specific gravity above 1.020.
The typical wound exudate is odorless, transparent, straw-colored, thin, and watery. Exudate, however, can differ depending on the state of wound healing. Likewise, the exudate's...
The typical wound exudate is odorless, transparent, straw-colored, thin, and watery. Exudate, however, can differ depending on the state of wound healing. Likewise, the exudate's...