Neutrophil Migration Through the Blood-Cerebrospinal Fluid Barrier
Author Information
Author(s): Wewer Corinna, Seibt Annette, Wolburg Hartwig, Greune Lilo, Schmidt M Alexander, Berger Jürgen, Galla Hans-Joachim, Quitsch Ulrike, Schwerk Christian, Schroten Horst, Tenenbaum Tobias
Primary Institution: University Children's Hospital, Heinrich-Heine-University, Düsseldorf, Germany
Hypothesis
What are the mechanisms of neutrophil transmigration through the blood-CSF barrier during bacterial meningitis?
Conclusion
The study reveals that neutrophils preferentially migrate through the blood-CSF barrier via a novel transcellular route during bacterial meningitis.
Supporting Evidence
- Neutrophil migration was significantly higher after stimulation with TNFα or infection with S. suis strain 10 compared to its non-encapsulated mutant.
- Barrier function was not significantly affected by PMN migration alone, but was compromised in combination with S. suis infection.
- PMNs preferentially migrated across PCPECs via the transcellular route, utilizing funnel-like structures.
Takeaway
When bacteria infect the brain, special immune cells called neutrophils can move through a barrier to help fight the infection, and they often take a shortcut through the cells instead of around them.
Methodology
The study used an inverted Transwell culture model to analyze neutrophil migration through porcine choroid plexus epithelial cells after stimulation with Streptococcus suis and TNFα.
Limitations
The study primarily used in vitro models, which may not fully replicate in vivo conditions.
Participant Demographics
Porcine choroid plexus epithelial cells were used in the experiments.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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