Why group A streptococci affect some people more severely

Group A streptococci are fairly common bacteria that can cause, among other things, strep throat or impetigo. However, if the bacteria become invasive, the situation can become very dangerous. In this case, the name sometimes ...

Researchers identify key player in cellular response to stress

An enzyme called Fic, whose biochemical role was discovered at UT Southwestern more than a dozen years ago, appears to play a crucial part in guiding the cellular response to stress, a new study suggests. The findings, published ...

How does an intestinal microbe become a pathogen?

The bacterium Escherichia coli is found in the human intestine, and elsewhere. There it is harmless, but in certain conditions it can become a pathogen. It can cause bladder infections or even sepsis. A team of researchers ...

Lead poisoning could reduce gene expression in humans

Scientists have unveiled a correlation between high blood lead levels in children and methylation of genes involved in haem synthesis and carcinogenesis, indicating a previously unknown mechanism for lead poisoning.

Genetic changes tracked as bacteria become a fatal infection

(Medical Xpress) -- An unusual case could tell researchers more about the genetic changes that occur when a common bacteria, normally carried without any problems, on rare occasions causes potentially life-threatening infections.

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