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Updated: Apr 8, 2026
Invasion of Human Cells by a Bacterial Pathogen
Published on: March 21, 2011
In Vitro infection of human dura-mater fibroblasts with Staphylococcus aureus: colonization and reactive production
Objective:
Post-operative meningitis, caused mainly by Staphylococcus aureus and Gram-negative rods, is a life-threatening complication after neurosurgery, and its pathogenesis is far from clear. The purpose of this work was to study the experimental infection of human dura-mater fibroblasts and whole human dura by S. aureus.
Methods:
In vitro cultures of human dura-mater fibroblasts and organotypic cultures of small pieces of human dura mater were inoculated with a human-derived S. aureus strain. The pattern of bacterial infection as well as cytokines secretion by the infected fibroblasts was studied.
Results:
Our results suggest that colonisation of human dura-mater fibroblasts in culture and whole dura-mater tissue by S. aureus includes bacterial growth on the cell surface, fibroblast intracellular invasion by bacteria and a significant synthesis of interleukin 1beta (IL-1beta) by the infected cells.
Conclusion:
This is the first report of human dura-mater fibroblast infection by S. aureus. Hopefully, these results can lead to a better understanding of the pathogenesis of meningitis caused by this bacterial species and to a more rational therapeutic approach.
Insights
Staphylococcus aureus infects human dura-mater fibroblasts and dura, causing surface colonization, intracellular invasion, and interleukin-1beta (IL-1beta) release. This study offers insights into meningitis pathogenesis.
Area of Science:
- Neuroscience
- Infectious Diseases
- Cell Biology
Background:
- Post-operative meningitis is a severe complication following neurosurgery.
- The exact pathogenesis of Staphylococcus aureus-induced meningitis remains unclear.
- Gram-negative rods and Staphylococcus aureus are primary causative agents.
Purpose of the Study:
- To investigate the experimental infection of human dura-mater fibroblasts and dura by Staphylococcus aureus.
- To elucidate the interaction between Staphylococcus aureus and human dura-mater cells.
Main Methods:
- Utilized in vitro cultures of human dura-mater fibroblasts.
- Employed organotypic cultures of human dura mater.
- Inoculated cultures with a human-derived Staphylococcus aureus strain.
- Analyzed bacterial infection patterns and cytokine secretion.
Main Results:
- Staphylococcus aureus colonized the surface of human dura-mater fibroblasts.
- Intracellular invasion of fibroblasts by Staphylococcus aureus was observed.
- Infected fibroblasts exhibited significant synthesis of interleukin-1beta (IL-1beta).
Conclusions:
- This research is the first to report human dura-mater fibroblast infection by Staphylococcus aureus.
- Findings contribute to understanding Staphylococcus aureus meningitis pathogenesis.
- Results may inform more effective therapeutic strategies.
