胰岛素样生长因子——Ⅰ在胎儿肝、肾等组织的分布

目的　研究胰岛素样生长因子 (IGFs)对胎儿组织增殖和分化的作用。方法　应用免疫组化 ABC法对16至 2 4周胎龄肝、肾、肾上腺、脾、胸腺等组织 IGF— I阳性细胞进行定位研究。结果　胎儿期内 ,以上器官中均有IGF— I阳性细胞存在 ,不同个体和器官其阳性细胞的数量、反应强弱和表达情况有差异。结论　在人胎发育过程中 ,这些器官组织均能表达 IGF— I,对其增殖分化起着自分泌和旁分泌的作用

Immunohistochemical Study of Insulin Like Growth Factor I in Human Fetal Organs

Objective To study the distribution of insulin-like Growth Factors (IGFs) in liver、 spleen、kidney、thymus and supraadrenal glands of fetus from 16 to 24 weeks.Method Using ABC immunohistochemistry. Results IGF-I positive cells were found in these organs during this period of fetal life, but the differences of number and reaction intensity of IGF-I positive cells appeared in different organs and individuals.Conclusion These organs tissues can express IGF-I during fetal development and play paracrine and/or autocrine role in cellular proliferation and differentiation of these fetal tissue.