The University of Sydney has recognised a new animal-free method for 
testing chronic lung disease therapies by conferring its annual Award 
for the Reduction in the Use of Animals in Research to medical 
researcher, Dr Hui Xin Ong. Dr Ong will receive the award today 
for building a simplified lung model that can tests new therapies for 
diseases such as asthma, cystic fibrosis, emphysema and bronchitis, 
without testing on animals. The Australian Code of Practice for 
the Care and Use of Animals for Scientific Purposes requires that 
techniques which replace the use of animals in research be sought and 
used wherever possible. 
Inhalation antibiotics have in recent 
years emerged as the most effective way to treat respiratory illnesses 
and are now a standard part of treatment for cystic fibrosis, a genetic 
condition which causes recurring lung infections. But there is room for 
improvement and this is where Dr Ong's research comes in.
Pulmonary
 diseases would be more effectively treated by inhalation drugs 
delivering higher levels of antibiotics and less frequent administration
 than those currently on the market. Dr Ong's research centres on the 
development of such drugs and she designed her lung model - the Calu-3 
bronchial epithelium - to provide an effective mechanism to test her 
developments.
Dr Ong completed her PhD developing and testing the 
Calu-3 with therapies for cystic fibrosis and respiratory tract 
infections. She found the Calu-3 was as effective at measuring the 
efficacy of the drugs as testing on rats. Although further testing is 
needed, Dr Ong says the Calu-3 has the potential to be the 'gold 
standard for studies of how particulates interact in human airways'.
"I
 was interested in marrying my background in pharmacy together with the 
biological aspects of the research," she says of her doctoral research.
"Apart
 from removing the obvious ethical issues related to the use of animals 
in research, models like the Calu-3 offer simplicity, robustness and 
better experimental control."
Dr Ong will be presented with her 
award, and $4000 for the Department of Respiratory Technology at the 
Woolcock Institute of Medical Research, by the University's Acting 
Deputy Vice-Chancellor (Research) Professor Laurent Rivory who led the 
panel judging the award.
"The selection panel agreed unanimously 
that Dr Ong's application stood out both for its novelty and potential 
for immediate impact on the reduction of in vivo (with live animals) 
studies undertaken during the development stages of novel inhalable 
formulations, resulting in vast cost savings," he said.
