Vaginal Composition Selective Antimicrobial Action
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Solution Overview
Problem
Current antimicrobial treatments for vaginal infections often fail to selectively inhibit pathogenic bacteria like Escherichia coli and Staphylococcus aureus while preserving beneficial Lactobacilli, leading to disrupted vaginal flora and reduced infection resistance.
Innovation Solution
A vaginal composition containing 2-phenylethanol, propionic acid, and benzoic acid or their salts, which selectively inhibit Escherichia coli and Staphylococcus aureus while promoting the growth of Lactobacilli, maintaining vaginal acidity and resistance, formulated as a solution, gel, or ointment with a pH range of 3.0 to 4.3.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If broad-spectrum antimicrobial agents are used to treat vaginal infections, then pathogenic bacteria are inhibited, but beneficial Lactobacilli are also destroyed
Solution Approach 1:
The patent divides the antimicrobial spectrum into selective targets: the composition specifically inhibits pathogenic bacteria (E. coli, S. aureus, G. vaginalis) while sparing beneficial Lactobacilli. This segmentation is achieved through the specific combination of 2-phenylethanol, propionic acid, and benzoic acid, which have differential effects on bacterial groups, allowing treatment of infection without destroying protective flora.
Solution Approach 2:
The composition creates different local conditions in the vaginal environment: it maintains acidic pH (3.5-4.5) which is favorable for Lactobacilli while the specific antimicrobial agents create localized inhibition zones against pathogenic bacteria. The formulation provides different qualities of microbial interaction - promotion for beneficial organisms and inhibition for pathogenic ones - within the same treatment environment.
2Object-affected harmful factors
If antimicrobial treatment is applied to eliminate pathogenic bacteria, then infection symptoms are reduced, but vaginal pH balance is disrupted
Solution Approach 1:
The composition actively manages the pH parameter to maintain vaginal homeostasis during treatment. By incorporating buffering agents and selecting acids that partially dissociate at vaginal pH, the formulation ensures pH remains within the optimal range (3.5-4.5) despite the presence of antimicrobial agents. This parameter control allows continuous suppression of pathogenic bacteria while preserving the acidic environment necessary for Lactobacilli survival and function.
3Loss of time
If strong antimicrobial agents are used to rapidly eliminate infection, then treatment duration is shortened, but resistance development is promoted
Solution Approach 1:
The patent employs a composite antimicrobial system combining three different agents (2-phenylethanol, propionic acid, and benzoic acid) with distinct mechanisms of action. This composite approach targets multiple bacterial pathways simultaneously, making it harder for pathogens to develop resistance. The synergistic interaction between components provides sustained efficacy while reducing the selective pressure that drives resistance development, allowing for effective treatment without the rapid resistance emergence associated with single-agent strong antimicrobials.
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 composition effectively inhibits pathogenic bacteria, restores beneficial Lactobacilli, and enhances vaginal acidity, thereby improving resistance to infections and alleviating symptoms such as pruritus and leucorrhea, while preventing conditions like bacterial vaginosis and vaginitis.
Implementation Method 1
any one of 2-phenylethanol, benzoic acid and/or its sodium salt, and propionic acid and/or its salt could selectively inhibit the growth of Lactococcus lactis while having no significant inhibition effect against Lactobacillus
Implementation Method 2
lactobacillus, can metabolize glycogen in vaginal mucosa epithelial cells to produce acid, thereby keep the pH value of the vaginal in a range from 3.5 to 4.3
Implementation Method 3
the composition may promote the restoration of beneficial Lactobacilli and increase vaginal acidity
Data Source
AI summary
The present disclosure relates to a use of an antimicrobial agent combination in preparing a composition for vagina. The combination of antimicrobial agents is strong in inhibiting against Escherichia coli, and/or Staphylococcus aureus, and/or Candida. The present disclosure also relates to a composition for vagina, which has a strong inhibition effect on Escherichia coli, and/or Staphylococcus aureus, and/or Candida. Being used in the vagina, the composition can promote the restoration of beneficial lactobacillus, increase the acidity of the vagina. It is suitable for modulating microecology and balancing microorganism in the vagina, and selectively decontaminating vagina.