Hydroperoxide Oxidizing Power Determination in Biological Samples
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Solution Overview
Problem
Current methods fail to accurately and efficiently determine the oxidizing power of hydroperoxides in biological samples and assess the risk associated with an altered oxidative balance, which is crucial for predicting cardiovascular risk.
Innovation Solution
A method involving photometric measurement of total cholesterol, hydroperoxides, and antioxidant capacity, with the calculation of protective, oxidative, and risk indices, using a specialized integrated analytical system that includes a photometer and thermostatic centrifuge, and a modified 'd-ROMs FAST' test to accelerate and stabilize the Fenton reaction for faster and more accurate hydroperoxide measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods are used to measure hydroperoxides, then measurement can be performed, but accuracy and efficiency are insufficient
Solution Approach 1:
The patent modifies the Fenton reaction conditions by adjusting parameters such as acid concentration, iron catalyst amount, and reaction temperature to accelerate the decomposition of hydroperoxides. This enables faster reaction kinetics while maintaining measurement accuracy, thereby resolving the contradiction between measurement precision and productivity
Solution Approach 2:
The patent introduces a chromogenic substrate as an intermediary that reacts with the hydroxyl radicals generated in the Fenton reaction. This intermediary converts the otherwise difficult-to-measure hydroperoxide concentration into a quantifiable colorimetric signal, improving both measurement accuracy and efficiency
2Measurement precision
If Fenton reaction is used for hydroperoxide measurement, then oxidizing power can be determined, but reaction time is too long
Solution Approach 1:
The patent optimizes the Fenton reaction parameters including increasing iron catalyst concentration, adjusting acid strength, and controlling temperature to accelerate the reaction rate. These parameter changes reduce the reaction time required while preserving the accuracy of oxidizing power determination
Solution Approach 2:
The patent performs preliminary optimization of reaction conditions and prepares reagents in advance to minimize actual measurement time. The method establishes optimal reaction conditions beforehand, allowing rapid execution during actual measurements without compromising precision
3Reliability
If comprehensive oxidative balance assessment is performed, then cardiovascular risk prediction improves, but complexity of analysis increases
Solution Approach 1:
The patent develops an integrated analytical system that performs multiple functions including hydroperoxide measurement, total cholesterol analysis, and antioxidant capacity assessment within a single platform. This multi-functional approach enables comprehensive oxidative balance evaluation while reducing overall system complexity through consolidation
Solution Approach 2:
The patent combines multiple measurement procedures into a unified analytical workflow that assesses hydroperoxides, cholesterol, and antioxidants simultaneously or in sequence using the same sample and equipment. This merging of functions improves reliability of cardiovascular risk prediction while simplifying the analytical process
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 reliable, reproducible, and economic evaluation of oxidative balance risk, providing a predictive index (OBRI) that correlates with cardiovascular risk and atherosclerotic disease regression.
Implementation Method 1
The method involves photometric measurement of total cholesterol, hydroperoxides, and antioxidant capacity
Implementation Method 2
a modified 'd-ROMs FAST' test to accelerate and stabilize the Fenton reaction for faster and more accurate hydroperoxide measurement
Data Source
AI summary
A method is described for the diagnostic determination of the risk caused by an altered oxidative balance, comprising the photometric measurement of total cholesterol, hydroperoxides, and antioxidant capacity, on the basis of which the protective index, the oxidative index and the risk index caused by an altered oxidative balance (or 'OBRI') are calculated. This latter index has proved to be particularly dependable and reliable in determining the status of the oxidative balance in relation to cholesterol levels, being highly predictive of cardiovascular risk.