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Cystic Fibrosis - Liposomal Tobramycin Receives Second Orphan Drug Designation Within Weeks
Date:7/16/2009

lti-resistant to antibiotics and this, in conjunction with the poor prognosis of patients with B. cepacia infection, makes the treatment of these patients exceedingly complex. Tobramycin is in principle an effective antibiotic. The drug is however rather ineffective due to the impermeability of B. cepacia's cell envelope. In addition, B. cepacia - just like many other pathogens - has developed mechanisms to eliminate antibiotics once they have entered the cell. Fluidosomes(TM)-tobramycin seems to overcome these limitations by packing tobramycin into liposomes, which, by allowing effective penetration of the antibiotic into the bacterial cell, completely changes the microbiological profile of this antibiotic. Hence, Fluidosomes(TM)-tobramycin could be a totally new antibiotic formulation that addresses microbiological needs that no other antibiotic can."

What exactly happens when Fluidosomes(TM)-tobramycin encounters the bacterium is still not entirely clear, but pre-clinical data indicate a novel mode of action. Dr. Helmut Brunar, CEO of Axentis Pharma explains: "Once at the site of infection, tobramycin-containing liposomes seem to fuse with the cell membrane of the pathogen. In this way, the entire load of tobramycin contained in the Fluidosomes(TM) is released into the bacterial cell. Additionally, our data indicate that bacterial rescue mechanisms that pump tobramycin out of the cell are inhibited by the fusion process. The efficient delivery and maximum release of tobramycin into the bacterial cell together with inhibition of the clearance mechanism indicate that Fluidosomes(TM)-tobramycin has a highly efficient therapeutic effect."

About Axentis Pharma AG (http://www.axentispharma.com)

Axentis Pharma is a respiratory specialty pharmaceutical company whose core competence is the combination of a fully patented, liposome-based drug delivery s
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SOURCE Axentis Pharma AG
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