Food associated pathogens by Wilhelm Tham, Marie Louise Danielsson-Tham

By Wilhelm Tham, Marie Louise Danielsson-Tham

"Food borne ailments linked to microbial pathogens are an incredible explanation for human disease. adjustments in either way of life and consuming behavior bring up the chance for the transmission of pathogenic microorganisms in meals, for instance, the intake of uncooked meals implies hazards for meals borne infections and intoxications, as does the larger call for for refrigerated ready-to-eat meals, as a few meals borne Read more...

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2000). In this outbreak the normal rice water diarrhoea was not observed. The outbreak strain (together with only a few other strains so far) produced a more virulent type of CytK than most other strains (cytK is present in about 35–40% of strains). This type of CytK (from B. cytotoxicus) is 89% identical in amino acid sequence to the more commonly version of CytK (Stenfors Arnesen et al. 2008), isolated form most of the B. cereus strains. The most virulent version of CytK is about 5 times more toxic on epithelial cells than the most common CytK, although the activity on erythrocytes seems to be very similar (Stenfors Arnesen et al.

However, if one or both of the commercial kits reacts positively with proteins from B. cereus supernatant fluids, it is likely that the strain is enterotoxin positive. If culture supernatant fluids are cytotoxic (on epithelial cells in culture) the strains can be regarded as enterotoxin positive. At present there is no commercial method available for detecting CytK. Concluding Remarks B. cereus is a normal inhabitant of soil but it is also well adapted to grow in the gut of warm blooded animals.

Ahmed and S. Kasatiya. 1995. Bacillus cereus and Bacillus thuringiensis isolated in a gastroenteritis outbreak investigation. Lett. Appl. Microbiol. 21: 103–105. M. J. Gilbert. 1989. Bacillus cereus and other Bacillus species. P. ]. F oodborne Bacterial Pathogens. Marcel Dekker, New York, USA. pp. 21–70. , R. P. M. Pruss, T. Kaplan, E. S. Stewart and S. Scherer. 1998. Bacillus weihenstephanensis sp. nov. is a new psychrotolerant species of the Bacillus cereus group. Int. J. Syst. Bacteriol. 48: 1373–1382.

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