FDA approves second novel HIV drug

Till recently, just two classes of antiretroviral drugs, reverse transcriptase inhibitors and protease inhibitors, were on the market to treat HIV infection. Last week, the FDA linkurl:approved;http://www.reuters.com/article/health-SP/idUSN1221331120071015 Merck's raltegravir (Isentress), which interferes with viral replication at a different point, blocking the enzyme integrase to prevent the integration of the viral genetic material into host DNA. In our September issue, The Scientist reporte