Heparin Structural Signature Analysis for Processing History
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Solution Overview
Problem
The existing methods for evaluating heparin preparations lack a reliable means to determine if they were produced using specific processing methods, such as treatment with a base and/or oxidation followed by sulfite, which affects their structural signatures and subsequent pharmaceutical suitability.
Innovation Solution
A method involving the identification of structural signatures using techniques like HPLC, NMR, and mass spectrometry to determine if a heparin preparation was made by a process involving base treatment and oxidation, followed by sulfite treatment, allowing for classification, selection, or rejection of the heparin for pharmaceutical use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing evaluation methods are used for heparin preparations, then the evaluation process is simple, but the ability to determine processing history and ensure pharmaceutical suitability is insufficient
Solution Approach 1:
The patent introduces structural signatures as intermediary markers that mediate between the processing history (base treatment, oxidation, sulfite treatment) and the evaluation outcome. These structural signatures serve as detectable evidence that links the manufacturing process to the final product quality assessment, enabling reliable determination of processing history through analytical techniques.
Solution Approach 2:
The patent replaces simple evaluation methods with advanced analytical techniques (HPLC, NMR, mass spectrometry) that can detect structural signatures. This substitution transitions from mechanical/simple assessment to sophisticated analytical measurement, enabling identification of processing history through molecular-level structural analysis.
2Measurement precision
If advanced analytical techniques are used to identify structural signatures, then the determination of processing history becomes accurate, but the evaluation process becomes more complex
Solution Approach 1:
The patent performs preliminary identification of specific structural signatures associated with base treatment, oxidation, and sulfite treatment before the actual evaluation process. By pre-establishing what structural markers to look for and their significance, the complex analytical process becomes more directed and manageable, reducing the practical difficulty despite using advanced techniques.
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 accurate determination of the processing history of heparin preparations, ensuring their suitability for pharmaceutical applications by identifying statistically significant structural signatures, thereby ensuring quality and consistency.
Implementation Method 1
The structural signature is determined using one or more separation methods, e.g., high performance liquid chromatography (HPLC)
Implementation Method 2
nuclear magnetic resonance (NMR)
Implementation Method 3
mass spectrometry
Data Source
AI summary
Methods of evaluating heparin preparations, e.g., for suitability for use as a drug or for use in making a drug, by determining the absence, presence or amount of a structural signature, wherein, e.g., the structural signature is indicative of the methods used to make the heparin preparation.