How Media Ion Composition Affects Salmonella Virulence in Spaceflight
Author Information
Author(s): Wilson James W., Ott C. Mark, Quick Laura, Davis Richard, zu Bentrup Kerstin Höner, Crabbé Aurélie, Richter Emily, Sarker Shameema, Barrila Jennifer, Porwollik Steffen, Cheng Pui, McClelland Michael, Tsaprailis George, Radabaugh Timothy, Hunt Andrea, Shah Miti, Nelman-Gonzalez Mayra, Hing Steve, Parra Macarena, Dumars Paula, Norwood Kelly, Bober Ramona, Devich Jennifer, Ruggles Ashleigh, CdeBaca Autumn, Narayan Satro, Benjamin Joseph, Goulart Carla, Rupert Mark, Catella Luke, Schurr Michael J., Buchanan Kent, Morici Lisa, McCracken James, Porter Marc D., Pierson Duane L., Smith Scott M., Mergeay Max, Leys Natalie, Stefanyshyn-Piper Heidemarie M., Gorie Dominic, Nickerson Cheryl A.
Primary Institution: The Biodesign Institute, Center for Infectious Diseases and Vaccinology, Arizona State University
Hypothesis
Can media ion concentrations be manipulated to prevent the enhanced Salmonella virulence imparted during spaceflight?
Conclusion
The study found that media ion composition can be used to prevent increased virulence of Salmonella during spaceflight.
Supporting Evidence
- Salmonella grown in spaceflight showed increased virulence compared to ground controls.
- Phosphate ions in media can alter Salmonella's pathogenic responses.
- Gene expression analysis revealed conserved pathways in Salmonella responding to spaceflight.
- Different media compositions led to significant differences in Salmonella virulence.
- Spaceflight conditions mimic low fluid shear environments encountered during human infections.
Takeaway
When bacteria called Salmonella are sent to space, they can become more harmful, but changing the ingredients in their food can help keep them safe.
Methodology
The study involved culturing Salmonella in different media during spaceflight and comparing their virulence in mice.
Limitations
The study was limited to specific media compositions and may not represent all possible conditions.
Participant Demographics
Female Balb/c mice were used for infection experiments.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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