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[Capsule formation in Pasteurella multocida, serovar A]

T E Popova1, N V Klitsunova

  • 1Kovalenko Research Institute of Experimental Veterinary, Miscow, Russia.

Zhurnal Mikrobiologii, Epidemiologii I Immunobiologii
|February 9, 1999
PubMed
Summary

This study investigated capsule formation in Pasteurella multocida (P. multocida) bovine strain, serovar A. Results showed the capsule is polysaccharide in nature, with differences observed between broth and agar cultures.

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Area of Science:

  • Microbiology
  • Bacteriology
  • Cell Biology

Context:

  • Pasteurella multocida (P. multocida) is a significant bacterial pathogen in cattle.
  • Capsule formation is a key virulence factor in P. multocida.
  • Understanding capsular structure is crucial for developing effective control strategies.

Purpose:

  • To investigate the process of capsule formation in P. multocida bovine strain, serovar A.
  • To characterize the composition and structure of the P. multocida capsule.
  • To compare capsule formation in liquid (broth) versus solid (agar) culture media.

Summary:

  • P. multocida serovar A capsules were studied using electron cytochemistry with ruthenium red and polycationic ferritin.
  • The capsule was confirmed to be polysaccharide in nature.
  • Significant differences in capsular structure were observed between cells grown in liquid and solid media, with a more pronounced capsular layer in broth cultures.

Impact:

  • Provides insights into the variability of P. multocida capsule formation based on growth conditions.
  • Contributes to the understanding of bacterial virulence factors.
  • Informs potential targets for antimicrobial development and disease prevention in cattle.

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