P2X4 Receptor Antagonist for Peripheral Cough Suppression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current medicaments for cough, such as codeine, are not selectively effective and can have side effects, and they are often ineffective for coughs caused by conditions like cough variant asthma or gastroesophageal reflux disease.
Innovation Solution
Development of compounds with P2X4 receptor antagonistic action, represented by general formulas (AI) to (HII), which act selectively on peripheral P2X4 receptors to inhibit cough peripherally without affecting the cough center in the medulla oblongata.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If central nervous system acting medicaments like codeine are used to suppress cough, then cough suppression effect is improved, but side effects increase and selectivity decreases
Solution Approach 1:
The invention segments the cough suppression mechanism by targeting a specific peripheral component (P2X4 receptors in airway sensory neurons) rather than suppressing the entire central nervous system cough pathway. This localized approach maintains effectiveness while reducing systemic side effects associated with central acting medicaments like codeine.
Solution Approach 2:
The compound is designed to act locally at peripheral P2X4 receptors in airway sensory neurons, creating a site-specific effect. This local action at the periphery avoids the need for central nervous system penetration, thereby reducing harmful side effects while maintaining reliable cough suppression.
2Reliability
If central nervous system acting medicaments are used, then cough suppression is achieved, but adaptability to different cough causes decreases
Solution Approach 1:
The P2X4 receptor antagonist mechanism provides a universal approach to cough suppression that works across multiple cough etiologies. By blocking the peripheral sensory neuron pathway common to various cough triggers (asthma, GERD, infections), the compound achieves broad adaptability while maintaining reliable suppression效果.
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
The compounds effectively prevent or treat acute, persistent, and chronic coughs, including those caused by dry or wet cough conditions, with reduced side effects compared to central nervous system acting medicaments.
Implementation Method 1
compounds having P2X4 receptor antagonistic action... act selectively on peripheral P2X4 receptors to inhibit cough peripherally
Data Source
AI summary
The present invention pertains to a medicament for preventing or treating cough, including, as an active ingredient, a compound having P2X4 receptor antagonistic action, a tautomer, stereoisomer, or pharmaceutically acceptable salt of the compound, or a hydrate or solvate thereof.