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腺苷对猪血小板膜上磷脂酰肌醇激酶和磷脂酰肌醇-4-磷酸激酶的抑制作用 被引量:1

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摘要 用差速离心法分离猪血小板膜,在适当条件下,用[ γ-32 P) ATP与其保温,观察32P掺入磷脂情况。结果表明:(1)无外源性磷脂酰肌醇-4-磷酸(PIP)时,32P主要掺入PIP;补充外源性PIP后,32P也可掺入磷脂酰肌醇- 4, 5-二磷酸( PIP2) 9( 2)腺苷及类似物 5’-氧- 5’-脱氧腺苷对32 P掺入这两种磷脂均有强烈的抑制作用;(3)这种抑制作用呈剂量—效应关系(IC50分别为80μmol/L和70μmol/ L),并与ATP里竞争性。提示腺苷及类似物5’-氯-5’-脱氧腺苷这种抑制作用可能与其抑制血小板聚集作用有关。
机构地区 生化教研室
出处 《广东医学院学报》 1990年第3期151-155,共5页 Journal of Guangdong Medical College
基金 国家自然科学基金资助项目
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参考文献10

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