Abstract: Nanoparticles include a core and one or more targeting moieties, as well as one or more contrast agents or one or more therapeutic agents. The contrast agents or therapeutic agents may be contained or embedded within the core. If the nanoparticle includes therapeutic agents, the agents are preferably released from the core at a desired rate. The core may be biodegradable and may release the agents as the core is degraded or eroded. The targeting moieties preferably extend outwardly from the core so that they are available for interaction with cellular components, which interactions will target the nanoparticles to the appropriate cells, such as apoptotic cells; organelles, such as mitochondria; or the like. The targeting moieties may be tethered to the core or components that interact with the core.

Abstract: The present invention relates to 2?-Fluoro-6?-methylene carbocyclic nucleosides, pharmaceutical compositions containing these nucleosides and their use in the treatment or prophylaxis of a number of viral infections and secondary disease states and conditions thereof, especially including Hepatitis B virus (HBV) and secondary disease states and conditions thereof (cirrhosis and liver cancer), Heptatitis C virus (HCV), Herpes Simplex virus I and II (HSV-1 and HSV-2), cytomegalovirus (CMV), Varicella-Zoster Virus (VZV) and Epstein Barr virus (EBV) and secondary cancers which occur thereof (lymphoma, nasopharyngeal cancer, including drug resistant (especially including lamivudine and/or adefovir resistant) and other mutant forms of these viruses.

Abstract: Described herein are compounds, and pharmaceutically acceptable salts and prodrugs thereof, which are useful as inhibitors of IMPDH. In certain embodiments, a compound of the invention selectively inhibits a parasitic IMPDH versus a host IMPDH. Further, the invention provides pharmaceutical compositions comprising one or more compounds of the invention. The invention also relates to methods of treating various parasitic and bacterial infections in mammals. Moreover, the compounds may be used alone or in combination with other therapeutic or prophylactic agents, such as anti-virals, anti-inflammatory agents, antimicrobials and immunosuppressants.