Plasminogen Administration for Tympanic Membrane Perforation Healing
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Solution Overview
Problem
Current methods for wound healing, particularly for tympanic membrane perforations and chronic wounds, are inefficient in promoting proper healing and minimizing scar formation, with the mechanisms of wound healing and regulation still poorly understood.
Innovation Solution
Administration of plasminogen to accelerate wound healing by promoting the conversion of plasminogen to plasmin, which aids in tissue remodeling and necrotic tissue removal, thereby enhancing the healing process and reducing scar formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional wound healing methods are used, then the healing process occurs naturally, but the healing is slow and improper wound closure occurs resulting in scar formation
Solution Approach 1:
The patent introduces plasminogen as an intermediary substance that mediates the wound healing process. Plasminogen is converted to plasmin, which then acts as a proteolytic enzyme to degrade excess matrix and facilitate proper epithelial migration, thereby ensuring reliable wound closure while accelerating healing.
Solution Approach 2:
The patent changes the biochemical parameters of the wound environment by introducing plasminogen and its conversion to plasmin. This enzymatic activity alters the proteolytic balance in the wound, enabling controlled matrix degradation that promotes faster and more proper healing without excessive scarring.
2Stability of the object's composition
If proteases are used to degrade extracellular matrix during wound healing, then tissue remodeling occurs, but the precise mechanisms are poorly understood and uncontrolled degradation may occur
Solution Approach 1:
The patent utilizes the natural feedback regulation of the plasminogen-activation system, where plasmin activity is controlled by inhibitors such as PAI-1 and α2-anti-plasmin. This feedback mechanism ensures that matrix degradation is precisely regulated, preventing uncontrolled proteolysis while maintaining effective tissue remodeling.
3Productivity
If plasminogen is administered to accelerate wound healing, then healing is enhanced and scar formation is reduced, but the mechanism of action requires further elucidation
Solution Approach 1:
The patent employs plasminogen's ability to self-activate through the endogenous plasminogen activation system. Once administered, plasminogen is converted to plasmin by tissue-type or urokinase-type plasminogen activators already present in the wound, creating a self-sustaining healing acceleration mechanism without requiring external activation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Plasminogen administration significantly improves wound healing by facilitating tissue repair, reducing necrotic tissue, and minimizing scar formation, as demonstrated by enhanced healing in animal models with plasminogen supplementation.
Implementation Method 1
plasminogen is activated to the proteolytic enzyme plasmin by either of the two physiological plasminogen activators (PAs), tissue-type plasminogen activator (tPA) and urokinase-type plasminogen activator (uPA)
Implementation Method 2
the degradation of the extracellular matrix (ECM) that takes place during wound healing and other ECM remodeling processes is dependent on the action of a variety of proteolytic enzymes
Data Source
AI summary
The present invention relates to the use of plasminogen and plasmin as agents for enhancing healing of tympanic membrane perforations or other wounds, and for reducing scars or necrotic tissue forming during wound healing. The invention also relates to a method for screening of compounds which enhance wound healing by evaluating the healing of tympanic membrane perforations in an animal model.