PRR-Based Microbial Assays for Rapid Sepsis Detection
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Solution Overview
Problem
Current diagnostic methods for sepsis are time-consuming and unreliable, leading to delayed treatment and increased mortality, especially in cases of encapsulated pathogens and antimicrobial resistance, with no rapid diagnostic or monitoring method to detect microbial infections accurately in blood samples.
Innovation Solution
A method involving lysing or killing microbes in a sample using mechanical or chemical means before assaying with a pattern recognition receptor (PRR) based detection, exposing microbe-associated molecular patterns (MAMPs) for enhanced detection and monitoring antimicrobial efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If direct examination or blood culture is used to detect pathogens, then diagnostic accuracy is improved, but diagnostic time increases significantly
Solution Approach 1:
The patent applies preliminary action by pre-coating solid substrates with pattern recognition receptors (PRRs) before sample introduction. This allows immediate capture and detection of microbe-associated molecular patterns (MAMPs) upon sample addition, eliminating the need for time-consuming culture steps while maintaining high diagnostic accuracy for detecting pathogens including encapsulated bacteria.
Solution Approach 2:
The patent extracts and detects specific microbe-associated molecular patterns (MAMPs) directly from clinical samples using PRR-based assays. By isolating and detecting these characteristic microbial components rather than waiting for pathogen growth, the method achieves rapid diagnosis within minutes to hours while maintaining high accuracy for identifying bacterial infections.
2Measurement precision
If encapsulated pathogens are detected using conventional methods, then detection sensitivity is reduced, but diagnostic reliability is improved
Solution Approach 1:
The patent applies preliminary action by pre-coating solid substrates with pattern recognition receptors (PRRs) before sample introduction. This allows immediate capture and detection of microbe-associated molecular patterns (MAMPs) upon sample addition, eliminating the need for time-consuming culture steps while maintaining high diagnostic accuracy for detecting pathogens including encapsulated bacteria.
Solution Approach 2:
The patent changes the detection parameter from detecting intact encapsulated bacteria to detecting their released MAMPs. By using PRRs that specifically bind to carbohydrate patterns on bacterial cell walls and capsules, the method achieves high sensitivity for encapsulated pathogens while maintaining diagnostic reliability through specific PRR-MAMP interactions.
3Loss of time
If rapid detection methods are used, then diagnostic time is reduced, but detection sensitivity and accuracy worsen
Solution Approach 1:
The patent applies preliminary action by pre-coating solid substrates with pattern recognition receptors (PRRs) before sample introduction. This allows immediate capture and detection of microbe-associated molecular patterns (MAMPs) upon sample addition, eliminating the need for time-consuming culture steps while maintaining high diagnostic accuracy for detecting pathogens including encapsulated bacteria.
Solution Approach 2:
The patent uses pattern recognition receptors (PRRs) as intermediaries between the clinical sample and the detection system. These PRRs specifically bind to microbe-associated molecular patterns (MAMPs), enabling rapid and sensitive detection within minutes to hours while maintaining high accuracy by mediating specific molecular recognition events.
4Loss of time
If antimicrobial treatment is started immediately without accurate diagnosis, then treatment time is reduced, but treatment effectiveness worsens
Solution Approach 1:
The patent applies preliminary action by pre-coating solid substrates with pattern recognition receptors (PRRs) before sample introduction. This allows immediate capture and detection of microbe-associated molecular patterns (MAMPs) upon sample addition, eliminating the need for time-consuming culture steps while maintaining high diagnostic accuracy for detecting pathogens including encapsulated bacteria.
Solution Approach 2:
The patent implements feedback by using rapid PRR-based detection to provide immediate information about pathogen presence and characteristics. This feedback enables clinicians to make informed treatment decisions within hours rather than days, allowing timely initiation of appropriate antimicrobial therapy while avoiding ineffective empiric treatment, thereby improving treatment effectiveness.
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
Enables rapid and sensitive detection of microbial infections, including encapsulated pathogens, and effective monitoring of antimicrobial treatment, reducing diagnostic time to under an hour and improving patient outcomes.
Implementation Method 1
assaying with a pattern recognition receptor (PRR) based detection, exposing microbe-associated molecular patterns (MAMPs) for enhanced detection
Data Source
AI summary
The disclosure provides methods, compositions, and kits for enhanced detection of microbes in samples and monitoring of antimicrobial activity in a subject.