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Adherence of intestinal and extraintestinal Pseudomonas aeruginosa to tissue culture cells
1Institute of Preventive and Clinical Medicine, Bratislava, Czechoslovakia.
Abstract:
The adherence pattern of Pseudomonas aeruginosa strains to HeLa, Vero and CHO cells was studied. The diffuse type of adherence was found to prevail on HeLa cells. It was characteristic for intestinal and environmental strains. Urinary strains revealed more often a localized adherence. A similar pattern was obtained with CHO cells. Experiments with Vero cells showed an equal distribution of intestinal strains regarding the diffuse, localized and mixed adherence. Urinary strains revealed mostly a localized adherence of a similar pattern as was observed on HeLa and CHO cells.
Insights
Pseudomonas aeruginosa adherence patterns vary by cell type and strain origin. Urinary strains predominantly show localized adherence to HeLa, Vero, and CHO cells, unlike intestinal and environmental strains.
Area of Science:
- Microbiology
- Cell Biology
- Bacterial Pathogenesis
Background:
- Pseudomonas aeruginosa is an opportunistic pathogen known for its ability to adhere to various host cells.
- Understanding bacterial adherence patterns is crucial for elucidating infection mechanisms.
- Different cell lines (HeLa, Vero, CHO) offer distinct models for studying host-pathogen interactions.
Purpose of the Study:
- To investigate and compare the adherence patterns of Pseudomonas aeruginosa strains to three different cell lines: HeLa, Vero, and CHO.
- To determine if adherence patterns differ based on the origin of the bacterial strains (intestinal, urinary, environmental).
Main Methods:
- In vitro adherence assays were performed using Pseudomonas aeruginosa strains.
- Three distinct cell lines (HeLa, Vero, and CHO) were used as substrates for adherence studies.
- Bacterial adherence patterns were categorized as diffuse, localized, or mixed.
Main Results:
- Diffuse adherence was the predominant pattern observed on HeLa cells, characteristic of intestinal and environmental strains.
- Urinary strains exhibited a higher frequency of localized adherence on HeLa and CHO cells.
- Vero cells showed a mixed adherence pattern for intestinal strains, while urinary strains predominantly displayed localized adherence, similar to HeLa and CHO cells.
Conclusions:
- Pseudomonas aeruginosa exhibits distinct adherence patterns that are influenced by both the host cell type and the bacterial strain's origin.
- Localized adherence to epithelial cells appears to be a common characteristic of urinary Pseudomonas aeruginosa strains.
- These findings contribute to understanding the cell tropism and potential virulence mechanisms of Pseudomonas aeruginosa in different infection contexts.