agranulocytosis

JNJ-39758979是一种选择性的、高亲和力的、可口服的组胺 H4 受体拮抗剂，具有抗炎和止痒作用，对人、小鼠和猴子的组胺 H4 受体的 Ki 值分别为 12.5、5.3 和 25 nM。它对组胺诱导的 cAMP 抑制作用具有拮抗作用，pA2 为 7.9。

Pyrithyldione 是一种用于镇静和催眠的药剂，可能导致粒细胞缺乏症。

Clozapine HCl is a tricylic dibenzodiazepine, classified as an atypical antipsychotic agent. It binds several types of central nervous system receptors, and displays a unique pharmacological profile. Clozapine is a serotonin antagonist, with strong binding to 5-HT 2A 2C receptor subtype. It also displays strong affinity to several dopaminergic receptors, but shows only weak antagonism at the dopamine D2 receptor, a receptor commonly thought to modulate neuroleptic activity. Agranulocytosis is a major adverse effect associated with administration of this agent.