Mizolastine dihydrochloride is a histamine H1-receptor antagonist (IC50: 47 nM). It also used in the treatment of hay fever, hives, and other allergicreactions.
EP6 is an inhibitor of 5-lipoxygenase (5-LO), which is a crucial enzyme of the arachidonic acid (AA) cascade and catalyzes the formation of bioactive leukotrienes (LTs) which are involved in inflammatory diseases and allergicreactions.
Tylogenin, a steroidal aglycone generated by acid hydrolysis from two seasonal glycosides occurring in Tylophora sylvatica, inhibits IgE-induced basophil mediator release for allergicreactions. In the rabbit basophil-dependent serotonin release (BDSR) assay system, the inhibitory activity of tylogenin was significantly greater than that of its parent glycosides, tylophoroside and acetyltylophoroside, and that of dexamethasone. The activity of tylogenin was found to increase with the incubation time. In the human leukocyte-dependent histamine release test model, the glycosides had only a minimal activity. In contrast, tylogenin, with a geom mean IC50 = 49 microM, exerted a significantly greater potency than dexamethasone. These results suggest that tylogenin could represent a new class of antiallergic agents.
8-Hydroxy-5,7-dimethoxyflavanone (PDMF) is a phytochemical with tumor-preventive properties, promoting p53-driven G2/M cell cycle arrest and apoptosis. It is a potent anti-allergic agent for preventing IgE-driven hypersensitivity reactions and possesses anti-inflammatory activity.