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The Journal of Medical Microbiology, Vol 26, Issue 2 87-91, Copyright © 1988 by Society for General Microbiology

JOURNAL ARTICLE

Enterotoxigenicity of chicken isolates of Campylobacter jejuni in ligated ileal loops of rats

S. K. Saha, N. P. Singh and S. C. Sanyal
Department of Microbiology, Banaras Hindu University, Varanasi, India.

Ligated ileal loops in rats of the Charles-Foster strain, weighing 200-250 g and aged 7-8 months, provided a sensitive and reproducible means of testing the enterotoxigenicity of Campylobacter jejuni. All of 16 chicken isolates caused fluid accumulation comparable to that produced by toxigenic Vibrio cholerae O1, strain 569B. However, 11 of the isolates required one to three consecutive passages through the rat gut before doing so. The amount of fluid produced increased after each passage. Of three culture media tested, brucella broth of pH 6.7 supported the highest degree of enterotoxigenesis. Filtrates of cultures of all 16 chicken isolates in this medium were as effective as viable C. jejuni in producing fluid in ileal loops. The enterotoxin was neutralised completely by cholera antitoxin diluted 1 in 160, indicating its close immunobiological relationship to cholera toxin.


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M. J. Albert, S. Haridas, D. Steer, G. S. Dhaunsi, A. I. Smith, and B. Adler
Identification of a Campylobacter jejuni Protein That Cross-Reacts with Cholera Toxin
Infect. Immun., June 1, 2007; 75(6): 3070 - 3073.
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