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[Strains of salmonella with altered antigenic structure]
Zhurnal Mikrobiologii, Epidemiologii I Immunobiologii
|June 1, 1977
Summary
Researchers identified stable Salmonella mutants with altered antigens using fluorescence. These mutants, while phenotypically similar, showed defects in O- or K-antigen synthesis.
Area of Science:
- Microbiology
- Immunology
- Bacteriology
Context:
- Salmonella are significant bacterial pathogens.
- Understanding Salmonella antigen variation is crucial for diagnostics and vaccine development.
- Spontaneous mutations can lead to altered bacterial properties.
Purpose:
- To investigate the heterogeneity of Salmonella strains.
- To isolate and characterize spontaneous mutants with altered antigenic composition.
- To elucidate the genetic basis of antigen synthesis in Salmonella.
Summary:
- This study analyzed 260 Salmonella strains, revealing heterogeneity through colony fluorescence.
- Spontaneous, stable mutants with different antigenic structures were isolated.
- These mutants, phenotypically identical to parent strains, exhibited deficiencies in O- or K-antigen synthesis, confirmed by immunoelectrophoresis.
Impact:
- Identifies a novel method for isolating antigenically variant Salmonella mutants.
- Provides insights into the genetic regulation of Salmonella antigen synthesis.
- Contributes to the understanding of Salmonella diversity and potential for immune evasion.