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Updated: Aug 5, 2026
Chronic Salmonella Infected Mouse Model
Published on: May 31, 2010
[Experimental study on the effect of low molecular DNA from salmon milt in pseudotuberculosis infection]
Abstract:
The effect of low molecular DNA from salmon milt (nDNA) in experimental pseudotuberculosis in mice was studied. When nDNA was admiministered orally, dissemination of the organs by Yersinia pseudotuberculosis lowered and the survival of the animals infected with 100-percent lethal dose of the bacteria increased. nDNA decreased contamination of the epithelial cells by the microbe in vitro and prevented the lethal effect of the Y. pseudotuberculosis toxins on the mice.
Insights
Salmon milt DNA (nDNA) reduced Yersinia pseudotuberculosis spread in mice. Oral nDNA administration improved survival rates and decreased bacterial contamination and toxin effects.
Area of Science:
- Microbiology
- Immunology
- Pharmacology
Background:
- Pseudotuberculosis is an infectious disease caused by Yersinia pseudotuberculosis.
- Bacterial dissemination and toxin effects contribute to disease severity and mortality.
- Novel therapeutic strategies are needed to combat Yersinia infections.
Purpose of the Study:
- To investigate the therapeutic potential of low molecular weight DNA from salmon milt (nDNA) against experimental Yersinia pseudotuberculosis in mice.
- To evaluate the impact of oral nDNA administration on bacterial dissemination, survival rates, and host-pathogen interactions.
Main Methods:
- Induction of experimental pseudotuberculosis in a mouse model.
- Oral administration of nDNA prior to or during infection.
- Assessment of bacterial load in organs and epithelial cell contamination in vitro.
- Evaluation of animal survival rates and host response to bacterial toxins.
Main Results:
- Oral administration of nDNA significantly reduced the dissemination of Yersinia pseudotuberculosis in various organs.
- nDNA administration led to increased survival rates in mice infected with a lethal dose of the bacteria.
- In vitro studies demonstrated that nDNA decreased the contamination of epithelial cells by Y. pseudotuberculosis.
- nDNA effectively prevented the lethal effects of Y. pseudotuberculosis toxins on the host.
Conclusions:
- Low molecular weight DNA from salmon milt exhibits significant therapeutic effects against experimental Yersinia pseudotuberculosis.
- nDNA demonstrates potential as a protective agent by reducing bacterial spread, enhancing survival, and mitigating toxin-induced damage.
- These findings suggest nDNA as a promising candidate for further development as a novel treatment for Yersinia infections.
