胰岛素样生长因子1对新生儿脐带血单个核细胞产生细胞因子的影响

被引:13
作者
涂文伟
张壁涛
刘宇隆
机构
[1] 香港大学医学院儿科系,香港大学医学院儿科系,香港大学医学院儿科系
关键词
胰岛素样生长因子I; 胎血; 白细胞,单核; 细胞活素类;
D O I
暂无
中图分类号
R722.1 [新生儿疾病];
学科分类号
摘要
目的 研究胰岛素样生长因子 1(IGF 1)对新生儿免疫功能的影响。方法 利用无血清、无激素培养系统 ,体外培养 10例健康足月顺产儿脐带血单个核细胞 (CBMC)。 10例健康成人外周血单个核细胞 (PBMC)为正常对照。观察IGF 1对CBMC细胞因子产生的影响。结果 与正常组比较 ,植物血凝素 (PHA)诱导的CBMCIL 2、IL 4、干扰素γ(IFN γ)、IL 10和IL 12水平显著低下 (P值均 <0 .0 5 )。单纯IGF 1对CBMC、PBMCIL 2、IL 4、IFN γ和IL 10无明显刺激作用 ,但其可诱导CBMC产生高水平的IL 6及诱导PBMC产生高水平的IL 6和较低水平的IL 12 (P值均 <0 .0 1)。IGF 1可显著提高PHA诱导IL 6和IFN γ产生 (P值均 <0 .0 1) ,并使CBMC产生的IFN γ达到正常成人水平。同时 ,IGF 1可显著提高脂多糖刺激的CBMC产生IL 10 (P值 <0 .0 5 ) ,但尚不能达正常成人水平。相反 ,IGF 1抑制了脂多糖刺激的CBMCIL 12产生 (P值 <0 .0 5 )。结论 IGF 1可促进新生儿T淋巴细胞成熟并调节其免疫功能。
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页码:3 / 5
页数:3
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