Adjuvant Composition Skin Irritation Reduction
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Solution Overview
Problem
Current adjuvants for transdermal or transmucosal administration fail to sufficiently suppress skin irritation while effectively potentiating immunologic responses, especially when containing low molecular weight compounds.
Innovation Solution
An adjuvant composition comprising lauryl alcohol, propylene glycol, and glycerol, with specific mass ratios, is used for transdermal or transmucosal administration to minimize skin irritation and enhance immunologic response potentiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional adjuvants are used for transdermal or transmucosal administration, then immunologic response potentiation is achieved, but skin irritation is not sufficiently suppressed
Solution Approach 1:
The patent uses a composite adjuvant system combining squalane (lipid component) with specific concentrations of propylene glycol (8-90% by mass) and glycerol (1-90% by mass). This composite formulation creates a synergistic effect where squalane provides immunostimulation while the glycol and glycerol components suppress skin irritation, resolving the contradiction between efficacy and safety
Solution Approach 2:
The patent optimizes the concentration parameters of propylene glycol (8-90% by mass) and glycerol (1-90% by mass) to achieve the desired balance. By adjusting these parameters within specific ranges, the formulation maintains immunologic response potentiation while suppressing skin irritation, demonstrating parameter optimization to resolve the technical contradiction
2Ease of operation
If low molecular weight compounds are used in adjuvants, then transdermal absorption is improved, but skin irritation increases
Solution Approach 1:
The patent uses squalane as an intermediary substance that facilitates transdermal absorption without causing irritation. Squalane acts as a mediator between the low molecular weight compounds (propylene glycol and glycerol) and the skin, enabling efficient absorption while the higher molecular weight squalane component buffers the irritating effects, allowing safe use of absorption-enhancing compounds
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 adjuvant composition effectively suppresses skin irritation and potentiates immunologic responses, as demonstrated by improved solubility and immunostimulation effects, even when administered separately from antigens, with enhanced safety and efficacy compared to conventional methods.
Implementation Method 1
an adjuvant composition for transdermal or transmucosal administration
Data Source
AI summary
An adjuvant composition of the present invention contains lauryl alcohol and propylene glycol. Contents of the lauryl alcohol and the propylene glycol are 0.5 to 25% by mass and 8.0 to 99.5% by mass, relative to the total mass of the adjuvant composition, respectively. The lauryl alcohol is dissolved, and the adjuvant composition is used for transdermal or transmucosal administration.