TY-JUR T1 - 抑制PAF诱导的CD11b表达和IV型选择性PDE抑制剂,Rolipram JF - 欧洲呼吸期Jo - Eur Respir J SP - 1007 VL- 10是 - 5 Au - Berends,C Au - Dejkhuizen,B Au - De Monchy,JG Au - Dubois,AE Au - Gerritsen,J Au - Kauffman,HF Y1 - 1997/05/01 UR - http:// Erj.Esjournals.com /含量/ 10/5 / 1000.Bstract N2 - 我们定量地确定了选择性磷酸二酯酶(PDE)抑制剂,Rolipram抑制血小板活化因子(PAF)上的粘附分子CD11b和L-选择素的变化 -在体外刺激人性化学粒细胞和嗜酸性粒细胞。在从健康志愿者获得的人类全血中进行孵育,以通过纯化程序限制活化并模拟体内条件,其中不同的细胞类型可以更接近地相互作用。使用单克隆抗体和流式细胞术固定细胞后测量受体表达。用Rolipram,Dibutyll环状腺苷一磷酸盐(CAMP),前列腺素E2(PGE2)和异丙肾上腺素,浓度依赖于对中性粒细胞和嗜酸性粒细胞的L-选择蛋白的抑制和L-选择蛋白脱落。然而,这些抑制不超过50%。用Rolipram(10(-8)m)预孵育并随后与异丙肾上醇(0.5×10(-8)m)或PGE2(10(-8)m)诱导累积但不协同,效果的孵育。使用Rolipram与异丙肾或PGE2的组合,抑制来自嗜酸性粒细胞的PAF诱导的L-选择蛋白脱落分别高达71 +/- 28和67 +/- 21%。其他抑制剂低于50%。 In conclusion, rolipram inhibits CD11b expression and L-selectin shedding of platelet-activating factor-stimulated neutrophils and eosinophils in whole blood in a concentration-dependent fashion. Inhibitions did not exceed 50%, even at high concentrations. The inhibition of platelet-activating factor induced shedding of L-selectin from eosinophils with a combination of rolipram and prostaglandin E2 or isoproterenol, however, was found to be approximately 70%. Inhibition of rolling adhesion of eosinophils may, therefore, be a mode of action of type IV phosphodiesterase inhibitors. ER -