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[Study on the viscolytic activity of the sputum (author's transl)]
Abstract:
Several mucolytic agents were evaluated on sputum for testing their viscolytic activity and the bacterial tollerance to each of them. Proteolytic enzymes (trypsin, pepsin, papain, pancreatin), KJ, and dithiothreitol (or its derivatives) were better tollerated by common respiratory pathogens (H. influenzae, D. pneumoniae, Klebsiella, etc.) than other mucolytic agents, as acetil-cysteine, cisteamine-HCl, tension active substances, mercaptoethanol, and others. The dithiothreitol showed also one of the strongest viscolytic effect and therefore it was selected for the routinary sputum digestion at the concentration 0.1% in PBS pH 7.2. Such a solution was added to sputum specimen in different proportions according to the macroscopic "apparent" viscosity of each specimen. However researches on the comparative viscolytic activity of all the agents hereinafter considered are still in progress.
Insights
Dithiothreitol demonstrated superior viscolytic activity and bacterial tolerance compared to other mucolytic agents. It is now the preferred choice for routine sputum digestion in respiratory pathogen research.
Area of Science:
- Microbiology
- Biochemistry
Background:
- Sputum viscosity poses challenges in respiratory research and diagnostics.
- Effective mucolytic agents are crucial for sample processing and pathogen analysis.
Purpose of the Study:
- To evaluate and compare the viscolytic activity and bacterial tolerance of various mucolytic agents.
- To identify an optimal agent for routine sputum digestion.
Main Methods:
- Comparative analysis of mucolytic agents including proteolytic enzymes, KJ, and dithiothreitol.
- Assessment of bacterial tolerance by common respiratory pathogens (e.g., H. influenzae, D. pneumoniae, Klebsiella).
- Evaluation of viscolytic effects on sputum samples.
Main Results:
- Proteolytic enzymes and dithiothreitol exhibited better tolerance by respiratory pathogens than agents like acetylcysteine.
- Dithiothreitol displayed potent viscolytic effects.
- Dithiothreitol at 0.1% in PBS pH 7.2 was selected for routine sputum digestion.
Conclusions:
- Dithiothreitol is a highly effective mucolytic agent for sputum processing.
- The selected dithiothreitol solution offers a reliable method for sputum digestion in microbiology.
- Further research is ongoing to compare the viscolytic activities of all tested agents.