Listeria monocytogenes Traffics from Maternal Organs to the Placenta and Back
Author Information
Author(s): Bakardjiev Anna I, Theriot Julie A, Portnoy Daniel A
Primary Institution: University of California Berkeley
Hypothesis
The study evaluates the role of trafficking between maternal organs and placenta in a pregnant guinea pig model of listeriosis.
Conclusion
The placenta acts as a nidus of infection for Listeria monocytogenes, leading to increased bacterial load in maternal organs.
Supporting Evidence
- A single bacterium is sufficient to cause placental infection.
- The placenta becomes a nidus of infection leading to massive reseeding of maternal organs.
- Trafficking of L. monocytogenes from the placenta to maternal organs explains the differences in listeriosis in pregnant versus nonpregnant animals.
Takeaway
This study shows that a single bacterium can infect the placenta during pregnancy, and once infected, the placenta sends bacteria back to the mother, which can lead to serious health issues.
Methodology
The study used a pregnant guinea pig model and mathematical simulations to analyze bacterial trafficking and infection dynamics.
Limitations
The study primarily focuses on a guinea pig model, which may not fully represent human pregnancy.
Participant Demographics
Pregnant guinea pigs were used as the model organism.
Statistical Information
P-Value
0.028 and 0.016
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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