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Appl Environ Microbiol. 1967 July; 15(4): 718-722
Copyright © 1967 American Society for Microbiology. All Rights Reserved.

Distribution of Neuraminidase among Food-poisoning Strains of Clostridium perfringens

C. Wayne Moss, Marcia A. Schekter and William B. Cherry

Communicable Disease Center, Public Health Service, U.S. Department of Health, Education, and Welfare, Atlanta, Georgia 30333

ABSTRACT

A survey was made to determine the distribution of the enzyme neuraminidase among 76 strains of Clostridium perfringens. Representative strains from each toxigenic type (A to F) and atypical C. perfringens type A food-poisoning strains of both American and English (Hobbs types) origin were tested. Both the American food-poisoning and nonfood-poisoning associated cultures consisted of both neuraminidase-positive and -negative strains. Furthermore, American strains which could not be differentiated from the original Hobbs cultures consisted of both neuraminidase-positive and -negative representatives. In contrast, the English (Hobbs) strains uniformly failed to produce an active intracellular or extracellular neuraminidase. No enzyme activity was detected in these strains when cultures were grown in different growth media, when grown in the presence of substrate (neuraminlactose), or upon extended incubation of enzyme preparations with substrate. With the exception of a type F strain, representative strains of the other toxigenic types (A to F) produced neuraminidase; 85% of the typical type A strains contained the enzyme.

Appl Environ Microbiol. 1967 July; 15(4): 718-722
Copyright © 1967 American Society for Microbiology. All Rights Reserved.





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Copyright © 1967 by the American Society for Microbiology. All rights reserved.