Surfactant-Based Dermatophyte Detection Method
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Solution Overview
Problem
Current methods for diagnosing tinea, such as potassium hydroxide (KOH) microscopic examination and heat-treated enzyme treatments, are cumbersome, prone to misdiagnosis, and pose safety risks, necessitating a more convenient and sensitive detection method that does not require heat treatment.
Innovation Solution
A method using non-ionic or zwitterionic surfactants like polyoxyethylene alkylphenyl ether or alkyl betaine to extract dermatophyte components at room temperature, followed by antibody recognition and detection, eliminating the need for heat treatment and enhancing safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If heat treatment is applied to extract dermatophyte components, then detection sensitivity is improved, but operation complexity and safety risks increase
Solution Approach 1:
The invention changes the chemical parameters of the treatment liquid by using non-ionic surfactants (such as Triton X-100, NP-40, Tween 20, Tween 80) or zwitterionic surfactants (such as CHAPS) instead of heat treatment. These surfactants enable extraction of dermatophyte components at room temperature while maintaining detection sensitivity equivalent to heat-treated methods, thereby resolving the contradiction between detection sensitivity and operation complexity
Solution Approach 2:
The invention replaces the thermal energy-based extraction method (heat treatment) with a chemical energy-based method using surfactants. This substitution eliminates the need for heating equipment and complex temperature control procedures, significantly simplifying the operation while preserving detection sensitivity
2Measurement precision
If heat treatment is applied to extract dermatophyte components, then detection sensitivity is improved, but safety risks increase due to burn hazards
Solution Approach 1:
The invention changes the extraction conditions from high temperature (heat treatment) to room temperature by using surfactant-based treatment liquids. This parameter change eliminates thermal hazards and burn risks while maintaining the ability to extract dermatophyte components effectively, thus resolving the safety risk issue
Solution Approach 2:
The invention converts the potentially harmful heat treatment into a benign room temperature process by utilizing the solubilizing properties of surfactants. The harmful thermal energy is replaced with beneficial surfactant-microbe interactions that achieve the same extraction goal without safety risks
3Difficulty of detecting and measuring
If KOH direct microscopic examination is performed, then detection capability is achieved, but misdiagnosis risk increases due to difficulty in distinguishing hyphae from dust
Solution Approach 1:
The invention introduces surfactants as intermediary substances that selectively interact with dermatophyte components (hyphae, spores) to enhance their visibility and structural integrity. The surfactants bind to the fungal cell walls and membranes, making the dermatophyte structures more distinct and easier to differentiate from dust particles under microscopic examination, thereby improving diagnosis accuracy
Solution Approach 2:
The invention utilizes the optical properties of surfactant-dermatophyte complexes to enhance contrast and visibility. The surfactant treatment causes characteristic optical changes in dermatophyte structures, making them more distinguishable from background particles and improving diagnostic precision
4Measurement precision
If fungus culture method is used for diagnosis, then detection accuracy is improved, but detection time increases substantially
Solution Approach 1:
The invention performs preliminary extraction of dermatophyte components using surfactants at room temperature, which prepares the sample for rapid detection. This preliminary action eliminates the need for lengthy culture incubation periods while maintaining detection accuracy, as the surfactant treatment directly releases and preserves fungal antigens for immediate antibody detection
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
This method allows for rapid, accurate, and convenient detection of dermatophytes, reducing the risk of misdiagnosis and safety hazards while maintaining sensitivity equivalent to heat-treated methods.
Implementation Method 1
a step of extracting a dermatophyte component from a sample with a treatment liquid comprising a non-ionic surfactant or a zwitterionic surfactant
Data Source
AI summary
The present invention provides a method of detecting dermatophyte, which does not require a complicated operation such as an enzyme treatment and a heat treatment.The present invention provides a method of detecting dermatophyte, including a step of extracting a dermatophyte component from a sample with a treatment liquid containing a non-ionic surfactant or a zwitterionic surfactant, and a kit for diagnosing dermatophyte infection, containing a treatment liquid comprising the above surfactant, and an antibody specifically recognizing a dermatophyte component, which are housed in separate containers.