MARKHAM, ON, July 23 /PRNewswire-FirstCall/ - AlphaRx, Inc. (OTCBB: ALRX - News) announced positive preclinical results which demonstrated that an inhaled tobramycin nanoparticle (Zysolin(TM)) formulation was a more effective treatment in animal models of acute Pseudomonas aeruginosa pneumonia when compared to inhaled and injected conventional tobramycin solutions. The data was presented recently in an oral podium session at the 36th Annual Meeting and Exposition of the Controlled Release Society in Copenhagen, Denmark.