The University of British Columbia

Other

Novadex Pharmaceuticals Limited

David P Speert

Thomas C Usher

Malcolm King

Sameer Barghouthi

Siamon Gordon

This invention relates to the use of polysaccharide such as dextran to improve mucus clearance. In the present invention, dextran has been shown to reduce viscoelasticity and increase mucus clearability of sputum of cystic fibrosis patients. Dextran also reduced viscoelasticity of healthy dog mucus. The present invention therefore may be used to improve mucus clearance in cystic fibrosis patients and treat other conditions associated with defect in airway mucus clearance including chronic bronchitis, bronchiectasis and bronchial asthma.

Use of dextran and other polysaccharides to improve mucus clearance

Methods for reducing the risk of or preventing infections by bacterial pathogens in vivo. In particular, a method for reducing the risk of P. aeruginosa infection in vivo in compromised hosts such as cystic fibrosis patients. The methods involve the use of dextran or dextran sulphate as the active ingredient.

Method of preventing or reducing the risk of infection by bacterial

A novel therapy for Pseudomonas aeruginosa infections, in particular in cystic fibrosis patients, is described. Macrophages provide the first line of defence in protecting the lung against bacterial infections. Nonetheless, Pseudomonas aeruginosa infections continue to be problematic in cystic fibrosis patients and are the leading cause of death in these patients. Previously, little was known regarding the factors which regulate the capacity of macrophages to mediate phagocytosis of Pseudomonas aeruginosa. The inventors have now shown that phagocytosis of nonopsonized Pseudomonas aeruginosa by macrophages is dependent upon the presence of glucose. They have also shown that the action of glucose is on the macrophage rather than the bacteria. Glucose therapy can therefore be used to prevent or combat Pseudomonas aeruginosa infections.

Growing community of inventors

Vancouver, Canada

David P Speert