PCR comparison of Mycobacterium avium isolates obtained from patients and foods

Article Abstract:

The transfer of Mycobacterium avium (M. avium) may also be carried out via food isolates, as shown by a study conducted on AIDS patients. Out of 121 food samples, 25 exhibited the existence of 29 mycobacterial isolates, 12 of which were found to be M. avium. Results further established a close correlation between the nature and genetic makeup of food and patient isolates of the strain. The PCR-typing method was also deemed effective in the comparison of M. avium-related patient and food isolates, although it is incapable of defining insertion sequences of some systems.

Diagnosis, Causes of, Communicable diseases, AIDS (Disease)

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Genotypic characterization of Mycobacterium avium strains recovered from animals and their comparison to human strains

Article Abstract:

Genetic experiments help characterize Mycobacterium avium isolated from ten pigs and 21 birds. Pulsed-field gel electrophoresis reveals significant similarities between M. avium collected from various birds, and bird isolates contain a few copies of IS1245 and IS901. Pig isolates exhibit polymorphism and carries a high copy number of ISI245. IS901 is absent in pig isolates, which share many features with human M. avium.

Diseases, Swine, Swine diseases

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Variation in resistance of Mycobacterium paratuberculosis to acid environments as a function of culture medium

Article Abstract:

Acid resistance of Mycobacterium paratuberculosis was examined as a function of growth conditions. Results reveal that Mycobacterium paratuberculosis is quite resistant to acidic environments, though the level of resistance is affected by in vitro culture conditions.

Science & research, Risk factors, Food, Food microbiology, Protein engineering

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