Ascorbic Acid–Glutathione Compositions for Stable Airway Clearance
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Solution Overview
Problem
Current therapies for chronic inflammatory airway diseases, such as lung transplant and cystic fibrosis, are associated with systemic side effects, toxicities, and multi-drug resistant infections, and fail to effectively restore mucociliary clearance and reduce inflammation.
Innovation Solution
Compositions comprising glutathione, a glutathione derivative, or a glutathione conjugate, combined with an organic acid like ascorbic acid and a bicarbonate salt, at specific molar ratios and pH levels, are administered to enhance mucociliary clearance, reduce bacterial growth, and decrease inflammation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current therapies (high doses of immunosuppression agents and antimicrobials) are used to treat lung transplant patients, then infection and inflammation are suppressed, but systemic side effects and toxicities increase
Solution Approach 1:
The patent applies local quality by delivering glutathione and ascorbic acid specifically to the airway surface liquid through nebulization, concentrating the therapeutic effect at the site of infection rather than using systemically acting drugs. This localized delivery reduces systemic side effects while maintaining effective infection control in the lungs.
Solution Approach 2:
The patent uses airway surface liquid as an intermediary medium to deliver glutathione and ascorbic acid to the airway epithelium. This intermediary approach allows the antioxidants to reach their target cells without requiring systemic circulation, thereby reducing overall exposure to harmful effects while maintaining therapeutic efficacy.
2Reliability
If high dose antibiotics are used repeatedly to treat infections, then bacterial growth is inhibited, but multi-drug resistant infections develop
Solution Approach 1:
The patent converts the harmful effect of oxidative stress and inflammation (which normally promote bacterial growth) into beneficial effects by using glutathione and ascorbic acid to restore the airway's natural antioxidant defenses. This approach inhibits bacterial growth without selecting for resistance, as the mechanism involves restoring cellular redox balance rather than direct antibacterial killing.
Solution Approach 2:
The patent enables the airway epithelium to serve itself by replenishing glutathione reserves and restoring antioxidant capacity. This self-service mechanism allows the airway's own cellular defenses to inhibit bacterial growth without external intervention, avoiding the development of resistance that occurs with repeated antibiotic exposure.
3Productivity
If glutathione is administered to restore airway antioxidant defenses, then mucociliary clearance improves, but oxidation of glutathione occurs during storage
Solution Approach 1:
The patent applies parameter changes by formulating glutathione at a specific pH (between 3.0 and 6.0) and combining it with ascorbic acid at defined concentrations. These parameter adjustments stabilize glutathione against oxidation during storage while maintaining its biological activity. The pH control is critical, as it affects the redox potential and prevents spontaneous oxidation.
Solution Approach 2:
The patent creates a composite formulation combining glutathione, ascorbic acid, and pH buffer in specific ratios. This composite approach provides mutual protection: ascorbic acid protects glutathione from oxidation, while the pH buffer maintains the stability of both compounds. The synergistic combination achieves superior stability compared to either compound alone.
4Stability of the object's composition
If ascorbic acid is added to the composition to enhance stability, then oxidation is reduced, but the composition becomes more complex
Solution Approach 1:
The patent applies universality by selecting ascorbic acid as a multi-functional component that simultaneously serves as an antioxidant, a pH buffer, and a stabilizer. This single compound performs multiple functions that would otherwise require separate additives, thereby reducing overall formulation complexity while achieving enhanced stability.
Solution Approach 2:
The patent uses parameter changes by optimizing the concentration ratios of ascorbic acid to glutathione (between 0.5:1 and 2:1) and controlling pH within a specific range (3.0-6.0). These parameter optimizations ensure maximum stability with minimal additives, avoiding over-complication of the formulation while achieving the desired protective effect.
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 compositions maintain high stability and efficacy in reducing bacterial growth, enhancing mucociliary clearance, and decreasing inflammation, even in the absence of bacterial colonization, thereby improving airway health.
Implementation Method 1
Ascorbic acid may be oxidized to dehydroascorbic acid, which can then undergo further breakdown and result in the formation of protein adducts, e.g., ascorbylation of proteins
Implementation Method 2
The combination of glutathione and ascorbic acid has been shown to have a synergistic effect in reducing bacterial growth
Implementation Method 3
The composition enhances mucociliary clearance, which is the process by which the airways clear mucus and other debris through the coordinated beating of cilia and the viscoelastic properties of mucus
Implementation Method 4
The composition decreases airway inflammation by reducing the production of pro-inflammatory cytokines and chemokines
Data Source
AI summary
The application is directed a composition comprising organic acid (e.g., ascorbic acid), glutathione, a glutathione derivative, a glutathione conjugate, a pharmaceutically-acceptable salt thereof, or any combination thereof, and methods of using the same. In certain aspects the application is directed to glutathione, a glutathione derivative, a glutathione conjugate, a pharmaceutically-acceptable salt thereof; and an organic acid; wherein the molar ratio is about 0.5-1:1. The composition can further comprises a bicarbonate salt, wherein the molar ratio is about 0.1-0.5:0.5-1:1.