Abstract: Activated haptens useful for generating immunogens to HIV protease inhibitors, immunogens useful for producing antibodies to HIV protease inhibitors, and antibodies and labeled conjugates useful in immunoassays for the HIV protease inhibitor saquinavir. The novel haptens feature an activated functionality at the central, non-terminal hydroxyl group. Also described are monoclonal antibodies specific for saquinavir having less than 10% cross-reactivity with lopinavir, nelfinavir, amprenavir, ritonavir, and indinavir, and a murine hybridoma producing said antibodies.

Abstract: The present invention relates to the use of cardiac hormones, particularly natriuretic peptides, for diagnosing the risk of suffering from a cardiovascular complication, particularly heart disease or acute coronary syndrome, as a consequence of cardiotoxic medication, in particular chemotherapeutics, including anthracyclines. In particular, the invention relates to a method for diagnosing the risk of a patient who is going to receive cardiotoxic medication of suffering from a cardiovascular complication as a consequence of the cardiotoxic medication, comprising the steps of (a) taking a body fluid or tissue sample, and (b) measuring, preferably in vitro, the level of a cardiac hormone. Preferred cardiac hormones in the context of the present invention are ANP, NT-proANP, BNP, and NT-proBNP.