New ulcer-producing bacterium identified

Ghent, Belgium -- Belgian scientists have isolated and named a new bacterium that is believed to also cause stomach ulcers, along with Helicobacter pylori.

Although Helicobacter pylori commonly cause ulcers, some biopsies have also indicated a similar, but unidentified, bacterium. Numerous research papers have described failed attempts to culture the microbe in the laboratory since it was first observed in 1990. Now, scientists from Belgium's Ghent University say they have succeeded.

Genetic analysis revealed it is a new species related to H. pylori. Its name -- Helicobacter suis -- comes from the Latin for "of the pig". H. suis has been associated with stomach ulcers in pigs, which may cause sudden death and a big problem for farmers.

"The economic losses for the pork industry and the risk of the bacteria infecting humans justify the need for further research," said scientist Margo Baele. "Data shows that people in close contact with pigs have a higher risk of infection; this suggests H. suis is a zoonotic agent, capable of being transmitted from animals to humans."

The research appears in the International Journal of Systematic and Evolutionary Microbiology.

Copyright 2008 by United Press International.