肝再生对大鼠胎肝细胞脾内移植后增殖的影响

目的:研究肝再生状态对大鼠胎肝细胞脾内移植后增殖影响。方法:分离孕3周SD大鼠胚胎肝细胞,将其移植入70%肝切除肝再生模型大鼠脾内,分别于移植后7 d和30 d应用流式细胞仪检测肝切除大鼠残肝细胞的细胞周期,用图像分析法检测脾内移植胎肝细胞面积密度。结果:移植后7 d,肝切除鼠残肝细胞S和G₂/M期细胞比例都明显少于对照组(P＜0.05),而其脾内移植胎肝细胞面积密度则显著高于对照组(P＜0.05);30 d后,各组间残肝细胞再生状态与移植胎肝细胞的面积密度均无明显差异。 结论:肝再生状态有利于大鼠胎肝细胞脾内移植后的增殖。

Effects of liver regeneration on the proliferation of rat fetal hepatocytes after intrasplenical transplantation

AIM: To study the effect of environment of liver regeneration on the proliferation of rat fetal hepatocytes after intrasplenical transplantation. METHODS: Fetal hepatocytes isolated from 3-week SD rat fetuses bred were transplanted into the spleens of liver regeneration model rats with 70% partial hepatectomy. The cell cycle of the hepatocytes in the remnants liver was analyzed by flow cytometer and the density dimensions of the donor fetal hepatocytes in spleen were measured by image analysis system 7 and 30 days post-transplantation, respectively. RESULTS: Compared with the control group, the proportions of S and G 2/M cells in the remnants liver were obviously decreased ( P< 0.05), but the density dimensions of the donor fetal hepatocytes in spleen increased significantly ( P< 0.05) in rats with hepatectomy 7 days post-transplantation. CONCLUSION: The environment of liver regeneration is propitious to the proliferation of fetal hepatocytes after transplantation into spleen.