Biotic and abiotic factors influencing in vitro growth of Escherichia coli O157:H7 in ruminant digestive contents

Article Abstract:

The gastrointestinal tract (GIT) of ruminants is the main reservoir of enterohemorrhagic Escherichia coli, which is responsible for food-borne infections in humans leading to severe kidney disease. Characterization of biotic and abiotic factors that influence the carriage of these pathogens by the ruminant would help in the development of ecological strategies to reduce their survival in the GIT and to decrease the risk of contamination of animal products.

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Survival of yogurt bacteria in the human gut

Article Abstract:

A test was conducted on whether Lactobacillus delbrueckii subsp. bulgaricus and Streptococcus thermophilus could be recovered after passage through the human gut by feeding 20 healthy volunteers commercial yogurt. It is confirmed that yogurt bacteria, especially Lactobacillus delbrueckii subsp. bulgaricus could be retrieved from feces of healthy individuals over a few days of ingestion of commercial yogurt.

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Metabolic characterization of Escherichia coli strains adapted to growth on lactate

Article Abstract:

13C tracer experiments and 13C-constrained flux analysis were used for examining the metabolic network of Escherichia coli adaptively evolved on lactate. Results suggest an overall increase in fluxes for already-active central pathways.

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