allergic response

Tripelennamine hydrochloride (Pyribenzamine hydrochloride) 是一种组胺 H1 拮抗剂，具有低镇静作用，但经常刺激胃肠道。

Kuwanon G (Moracenin B) 是一种从桑树中得到的黄酮类蛙皮素受体拮抗剂，具有杀菌作用。

APC 366 是肥大细胞类胰蛋白酶 (tryptase) 的选择性抑制剂，Ki 值为7.1 μM。在羊过敏性哮喘模型中，APC 366 抑制抗原诱导的早期哮喘反应 (EAR)、晚期哮喘反应 (LAR) 和支气管高反应性 (BHR)。

Betamethasone 21-phosphate is a synthetic glucocorticoid.1It prevents increases in macrophage and eosinophil numbers in bronchoalveolar lavage fluid (BALF) and decreases in blood leukocyte numbers in a guinea pig model of parainfluenza-3 viral infection when administered at a dose of 8 mg/kg but does not prevent airway hyperresponsiveness after infection.2Betamethasone 21-phosphate inhibits cell infiltration into the aqueous humor in a rat model of endotoxin-induced uveitis when administered topically or subcutaneously at doses of 0.01-1% or 1 mg/kg, respectively.3It increases maximal lung pressure volume curves in fetal sheep when administered to pregnant ewes at 0.75 gestation at doses of 80 and 170 μg/kg.1Betamethasone 21-phosphate increases body weight, impairs learning and memory, increases anxiolytic behavior, and reduces hippocampal neurogenesis in CD-1 mice but reduces body weight and increases neurogenesis with no effect on anxiety in high-anxiety DBA/2 mice when administered at a dose of approximately 25 mg/kg per day in the drinking water for seven weeks.4Formulations containing betamethasone 12-phosphate and betamethasone acetate have been used in the treatment of severe allergic conditions and a variety of immune-related conditions. 1.Loehle, M., Schwab, M., Kadner, S., et al.Dose-response effects of betamethasone on maturation of the fetal sheep lungAm. J. Obstet. Gynecol.202(2)186.e181-186.e187(2010) 2.Leusink-Muis, A., Ten Broeke, R., Folkerts, G., et al.Betamethasone prevents virus-induced airway inflammation but not airway hyperresponsiveness in guinea pigsClin. Exp. Allergy29(Suppl. 2)82-85(1999) 3.Tsuji, F., Sawa, K., Kato, M., et al.The effects of betamethasone derivatives on endotoxin-induced uveitis in ratExp. Eye Res.64(1)31-36(1997) 4.Aiello, R., Crupi, R., Leo, A., et al.Long-term betamethasone 21-phosphate disodium treatment has distinct effects in CD1 and DBA/2 mice on animal behavior accompanied by opposite effects on neurogenesisBehav. Brain Res.278155-166(2015)

Tripelennamine 是一种乙二胺衍生物，是一种有效的组胺 H1受体拮抗剂，可减轻由组织胺引起的机体过敏反应。Tripelennamine 可用于鼻炎、结膜炎、过敏性和过敏性反应的研究。

MRGPRX1 agonist 4 是有效的、口服具有活力的 Mas 相关 G 蛋白偶联受体 X1 (MRGPRX1)正向变构调节剂 (EC50: 0.1 μM)。MRGPRX1 agonist 4 表现出良好的代谢稳定性以及口服生物利用度。MRGPRX1 agonist 4 能够改善人源性 MRGPRX1 神经疼痛模型小鼠行为性热过敏反应。

BTL-MK (Compound 19) 是一种口服有效的抗过敏剂，通过与抑制性受体FcγRIIB结合抑制肥大细胞脱粒，IC50为6.7 μM。BTL-MK 可以改善人肝微粒体的代谢稳定性，以及Ovalbumins诱导的小鼠食物过敏反应，并且具有良好的药代动力学特征。

RWJ-58643是一种用于研究抑制过敏性炎症状况的β-胰蛋白酶和胰蛋白酶抑制剂。该化合物在较低剂量(100mg)可有效减轻鼻部过敏症状、嗜酸性粒细胞浸润以及白细胞介素-5(IL-5)的水平。但在较高剂量(300mg和600mg)时，观察到嗜酸性粒细胞的增多和IL-5水平的升高，显示出明显的剂量依赖性反应。

Cetirizine Impurity B dihydrochloride (De(carboxymethoxy) Cetirizine Acetic Acid Dihydrochloride) 是 Cetirizine dihydrochloride 的杂质。Cetirizine 是一种抗组胺剂，是口服有活力的、特异性 H1受体拮抗剂。它能够抑制过敏反应期间嗜酸性粒细胞趋化，可以标记抗过敏特性。