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When ticks transmit dangerous pathogens: Local antibiotic therapy stops Lyme disease

Date:
September 15, 2011
Source:
Ludwig-Maximilians-Universitaet Muenchen (LMU)
Summary:
Blood-sucking ticks are not just a nuisance, they can also transmit dangerous diseases. One of them is Lyme disease, which is caused by bacteria of the genus Borrelia, and requires a course of treatment with antibiotics lasting several weeks. Researchers have come up with a quicker alternative.

Blood-sucking ticks are not just a nuisance, they can also transmit dangerous diseases. One of them is Lyme disease, which is caused by bacteria of the genus Borrelia, and requires a course of treatment with antibiotics lasting several weeks. LMU researchers have come up with a quicker alternative.

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Lyme disease is a dangerous disease which is transmitted by ticks. Blood-sucking ticks ingest the agents that cause the disease -- bacteria of the species Borrelia burgdorferi and its relatives -- during a blood meal, and subsequently transmit them to the next victim they feast on, often a person. It is estimated that, in Western Europe, up to half of all ticks carry the bacteria. Although the early symptoms of the illness are quite mild, if left untreated, it can result in serious damage to the skin, the joints, the heart and the nervous system, and effective therapy becomes very difficult.

A team of researchers led by the veterinary bacteriologist Professor Reinhard Straubinger at LMU has now shown, in an animal model, that application of a gel containing the antibiotic azithromycin to the site of the bite rapidly terminates the infection. The efficacy of this local antibiotic therapy for the treatment of borreliosis in humans is now being tested in a Phase III clinical trial.

In the meantime, though, patients must still undergo antibiotic treatment for several weeks and, in many cases, the drug must be administered intravenously -- which is distressing not only for children. Furthermore, treatment measures are often initiated on suspicion, because the bacteria are not detectable in the blood soon after one has been bitten by an infected tick.

"Our approach simply involves applying a transparent, self-adhesive plaster to the site of the wound," says Straubinger. "Because the plaster contains very little antibiotic, the effects are localized and side-effects are negligible.


Story Source:

The above story is based on materials provided by Ludwig-Maximilians-Universitaet Muenchen (LMU). Note: Materials may be edited for content and length.


Journal Reference:

  1. Jens Knauer, Inke Krupka, Christiane Fueldner, Joerg Lehmann, Reinhard K. Straubinger. Evaluation of the preventive capacities of a topically applied azithromycin formulation against Lyme borreliosis in a murine model. Journal of Antimicrobial Chemotherapy, 2011; DOI: 10.1093/jac/dkr371

Cite This Page:

Ludwig-Maximilians-Universitaet Muenchen (LMU). "When ticks transmit dangerous pathogens: Local antibiotic therapy stops Lyme disease." ScienceDaily. ScienceDaily, 15 September 2011. <www.sciencedaily.com/releases/2011/09/110915113634.htm>.
Ludwig-Maximilians-Universitaet Muenchen (LMU). (2011, September 15). When ticks transmit dangerous pathogens: Local antibiotic therapy stops Lyme disease. ScienceDaily. Retrieved March 31, 2015 from www.sciencedaily.com/releases/2011/09/110915113634.htm
Ludwig-Maximilians-Universitaet Muenchen (LMU). "When ticks transmit dangerous pathogens: Local antibiotic therapy stops Lyme disease." ScienceDaily. www.sciencedaily.com/releases/2011/09/110915113634.htm (accessed March 31, 2015).

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