Characterization of hemadsorption-negative mutants of Mycoplasma pneumoniae.

Infection and Immunity
E J HansenJ B Baseman

Abstract

Previously isolated mutants of Mycoplasma pneumoniae incapable of hemadsorption were characterized with respect to specific protein content, tracheal ring attachment capability, and virulence for both in vitro and in vivo model systems. Two-dimensional gel electrophoresis revealed both quantitative and qualitative differences between the protein complements of two different mutant strains and that of the virulent parent strain. Studies of mycoplasma attachment to hamster tracheal rings in vitro demonstrated that only one of these mutant strains still possessed the ability to attach to the respiratory epithelium via neuraminidase-sensitive receptors. Measurement of [3H]orotic acid uptake in mycoplasma-infected tracheal rings indicated that infection with the hemadsorption-negative mutants resulted in only slight reductions of ribonucleic acid synthesis, similar to levels observed for tracheal rings infected with an avirulent strain of M. pneumoniae. The virulence potential of the two mutant strains was further investigated by utilizing the hamster model system. Both mutant strains were rapidly cleared from the lungs of infected animals and produced little or no microscopic pneumonia.

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Citations

Apr 29, 2000·Electrophoresis·P Cash
Jan 1, 1992·Microbiology and Immunology·M YayoshiM Yoshioka
Apr 23, 2003·Acta Biologica Hungarica·A MádiL Fésüs
Apr 16, 2008·Infection and Immunity·Sowmya BalasubramanianJoel B Baseman
Aug 1, 1986·Infection and Immunity·J Morrison-PlummerJ B Baseman
Jul 1, 1982·Infection and Immunity·D C Krause, J B Baseman
Sep 1, 1995·Infection and Immunity·C T Hedreyda, D C Krause
Sep 1, 1982·Journal of Bacteriology·J B BasemanD K Leith
Feb 1, 1983·Infection and Immunity·D C KrauseJ B Baseman
Feb 1, 1983·Infection and Immunity·D K LeithJ B Baseman
Mar 1, 1988·Infection and Immunity·Y Y Chen, D C Krause
Aug 1, 1988·Infection and Immunity·D C Krause, Y Y Chen

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