Miadonna A, Tedeschi A, Leggieri E, Lorini M, Froldi M, Zanussi C
Br J Clin Pharmacol. 1986 Oct;22(4):483-6. doi: 10.1111/j.1365-2125.1986.tb02922.x.
The effect of calcium antagonists on basophil activation was investigated in 14 subjects. Verapamil, methoxyverapamil and diltiazem, in a concentration range of 1-100 microM, exert a concentration-dependent inhibition on the human basophil histamine release induced by calcium ionophore A23187, zymosan activated human serum and grass pollen allergens. This inhibitory effect is highly variable from subject to subject and from drug to drug. At concentrations higher than 200 microM, verapamil, methoxyverapamil and diltiazem induce a calcium independent histamine secretion from basophil leukocytes. This mediator release is associated with an increase in LDH levels in the cell supernatant and seems to be due to a cytotoxic effect.
在14名受试者中研究了钙拮抗剂对嗜碱性粒细胞活化的影响。维拉帕米、甲氧维拉帕米和地尔硫䓬在1-100微摩尔浓度范围内,对钙离子载体A23187、酵母聚糖激活的人血清和草花粉过敏原诱导的人嗜碱性粒细胞组胺释放具有浓度依赖性抑制作用。这种抑制作用在不同受试者和不同药物之间差异很大。在高于200微摩尔的浓度下,维拉帕米、甲氧维拉帕米和地尔硫䓬可诱导嗜碱性白细胞分泌不依赖钙的组胺。这种介质释放与细胞上清液中乳酸脱氢酶水平的升高有关,似乎是由于细胞毒性作用。