Researchers determine genetic structures of bacteria that cause Lyme disease

Researchers Dr. Steven E. Schutzer of UMDNJ-New Jersey Medical School and Dr. Claire M. Fraser-Liggett of the Institute for Genome Sciences, University of Maryland, and their collaborators have made a major achievement toward better understanding Lyme disease, by determining the complete genetic structures of 13 strains of the bacteria that cause the disease.

These new discoveries may accelerate research efforts to diagnose, prevent and treat the disease, which can affect the nervous system, heart, skin and joints. The occurrence of the disease has grown dramatically over the past ten years in the United States and Europe. The research, which was funded by the National Institutes of Health, has been published online ahead of print in the Journal of Bacteriology.

Dr. Schutzer said, "A driving force for doing this project was the observation that certain forms of the bacteria can be more invasive than others. We wanted to find out why and how to identify this property".

New insights into Lyme disease are needed. While the bacterium that causes the disease has been known for 27 years, there still is no vaccine for humans available. The authors believe that their sequence information will help investigators design improved diagnostic tests and vaccines. Efficient tests are needed because the telltale rash on the skin does not always appear in infected patients. Cultures, which work well for many other bacteria, take too long to be of immediate use for Lyme bacteria.