Alaproclate is a selective serotonin reuptake inhibitor (SSRI).1,2 It inhibits depletion of serotonin (5-HT) induced by 4-methyl-α-ethyl-m-tyramine in rat cerebral cortex, hippocampus, hypothalamus, and striatum (EC50s = 18, 4, 8, and 12 mg kg, respectively).1 Alaproclate inhibits NMDA-evoked currents and depolarization-induced voltage-dependent potassium currents in rat hippocampal neurons (IC50s = 1.1 and 6.9 μM, respectively) and does not inhibit GABA-evoked currents when used at concentrations up to 100 μM.2 It increases sirtuin 1 (SIRT1) levels in N2a murine neuroblastoma cells expressing apolipoprotein E4 (ApoE4; IC50 = 2.3 μM) and in the hippocampus in the FXFAD-ApoE4 transgenic mouse model of Alzheimer's disease when administered at a dose of 20 mg kg twice daily.3 Alaproclate (40 mg kg) decreases immobility time in the forced swim test in rats, indicating antidepressant-like activity.4References1. Michael, G.B., Eidam, C., Kadlec, K., et al. Increased MICs of gamithromycin and tildipirosin in the presence of the genes erm(42) and msr(E)-mph(E) for bovine Pasteurella multocida and Mannheimia haemolytica. Journal of Antimicrobial Chemotherapy 67(6), 1555-1557 (2012).2. Svensson, B.E., Werkman, T.R., and Rogawski, M.A. Alaproclate effects on voltage-dependent K+ channels and NMDA receptors: Studies in cultured rat hippocampal neurons and fibroblast cells transformed with Kv1.2 K+ channel cDNA. Neuropharmacology 33(6), 795-804 (1994).3. Campagna, J., Soilman, P., Jagodzinska, B., et al. A small molecule ApoE4-targeted therapeutic candidate that normalizes sirtuin 1 levels and improves cognition in an Alzheimer's disease mouse model. Sci. Rep. 8(1), 17574 (2018).4. Danysz, W.P., A., Kostowski, W., Malatynska, E., et al. Comparison of desipramine, amitriptyline, zimeldine and alaproclate in six animal models used to investigate antidepressant drugs. Pharmacol. Toxicol. 62(1), 42-50 (1988). Alaproclate is a selective serotonin reuptake inhibitor (SSRI).1,2 It inhibits depletion of serotonin (5-HT) induced by 4-methyl-α-ethyl-m-tyramine in rat cerebral cortex, hippocampus, hypothalamus, and striatum (EC50s = 18, 4, 8, and 12 mg kg, respectively).1 Alaproclate inhibits NMDA-evoked currents and depolarization-induced voltage-dependent potassium currents in rat hippocampal neurons (IC50s = 1.1 and 6.9 μM, respectively) and does not inhibit GABA-evoked currents when used at concentrations up to 100 μM.2 It increases sirtuin 1 (SIRT1) levels in N2a murine neuroblastoma cells expressing apolipoprotein E4 (ApoE4; IC50 = 2.3 μM) and in the hippocampus in the FXFAD-ApoE4 transgenic mouse model of Alzheimer's disease when administered at a dose of 20 mg kg twice daily.3 Alaproclate (40 mg kg) decreases immobility time in the forced swim test in rats, indicating antidepressant-like activity.4 References1. Michael, G.B., Eidam, C., Kadlec, K., et al. Increased MICs of gamithromycin and tildipirosin in the presence of the genes erm(42) and msr(E)-mph(E) for bovine Pasteurella multocida and Mannheimia haemolytica. Journal of Antimicrobial Chemotherapy 67(6), 1555-1557 (2012).2. Svensson, B.E., Werkman, T.R., and Rogawski, M.A. Alaproclate effects on voltage-dependent K+ channels and NMDA receptors: Studies in cultured rat hippocampal neurons and fibroblast cells transformed with Kv1.2 K+ channel cDNA. Neuropharmacology 33(6), 795-804 (1994).3. Campagna, J., Soilman, P., Jagodzinska, B., et al. A small molecule ApoE4-targeted therapeutic candidate that normalizes sirtuin 1 levels and improves cognition in an Alzheimer's disease mouse model. Sci. Rep. 8(1), 17574 (2018).4. Danysz, W.P., A., Kostowski, W., Malatynska, E., et al. Comparison of desipramine, amitriptyline, zimeldine and alaproclate in six animal models used to investigate antidepressant drugs. Pharmacol. Toxicol. 62(1), 42-50 (1988).
Fabesetron (FK1052) is an orally active compound that acts as a dual antagonist, targeting both the 5-HT3 and 5-HT4 receptors. It exhibits efficacy in studying emesis induced by cancer chemotherapy, showing potential for managing both acute and delayed symptoms.
Rolapitant, also known as SCH-619734, is an orally bioavailable, centrally-acting, selective, neurokinin 1 receptor (NK1-receptor) antagonist with potential antiemetic activity. Upon oral administration, rolapitant competitively binds to and blocks the activity of the NK1-receptor in the central nervous system, thereby inhibiting the binding of the endogenous ligand, substance P (SP). This may prevent both SP-induced emesis and chemotherapy-induced nausea and vomiting (CINV). The interaction of SP with the NK1-receptor plays a key role in the induction of nausea and vomiting caused by emetogenic cancer chemotherapy.