川芎嗪对BMT后小鼠骨髓基质细胞bFGF表达水平的影响

本研究探讨川芎嗪对骨髓移植（BMT）后小鼠骨髓基质细胞bFGF表达水平的影响及其促进骨髓造血重建的机制。取健康BALB／c小鼠，随机分为3组：正常组（不做处理），BMT＋生理盐水组（简称生理盐水组）和BMT＋川芎嗪治疗组（简称川芎嗪组）。生理盐水组和川芎嗪组分别胃饲生理盐水0．2毫升／只和川芎嗪注射液每次2毫克／只，2次／天，直至处死为止。在BMT后第7、14、21、28天处死小鼠，用RT—PCR和Western blot方法检测骨髓基质细胞bFGF mRNA及其蛋白表达水平。结果表明：BMT后第7、14、21天川芎嗪组和生理盐水组骨髓基质细胞bFGF mRNA及其蛋白的表达均明显低于正常组（P〈0．01或P〈0．05），但川芎嗪组明显高于生理盐水组（P〈0．01或P〈0．05），到第28天，川芎嗪组bFGF mRNA及其蛋白的表达已恢复正常，而生理盐水组仍未恢复正常，两组之间有显著性差异（P〈0．01）。结论：川芎嗪可能通过增加bFGF的表达水平而促进骨髓微环境的修复，加速BMT后骨髓的造血重建。

Effect of Ligustrazine on the Expression of bFGF in bone marrow stromal cells of mice after BMT

his study was purposed to investigate the effect of ligustrazine on the expression of bFGF in bone marrow stromal cells (BMSC) and to explore the mechanism of hematopoietic reconstitution after bone marrow transplantation (BMT). The mice were randomly divided into 3 groups: normal group,saline group and ligustrazine group. BMT mouse models were established. The mice of normal group were not treated, the mice of saline group were given normal saline (0.2 ml/mouse, twice a day) through gastric tube, while the mice of ligustrazine group were given ligustrazine (0.2 ml/mouse, twice a day) through gastric tube. On day 7, 14, 21 and 28 after BMT, the femora were taken and the bone marrow mononuclear cell (BMMNC) suspensions were used for the cultivation of bone marrow stromal cells according to Dexter's culture method. The mRNA and protein expressions of bFGF in BMSC were assayed by RT-PCR and Western blot respectively. The results showed that the expression of bFGF in BMSC on the level of mRNA and protein were all reduced significantly after BMT, and increased slowly with the time. On day 7,14 and 21 after BMT, the expressions of bFGF mRNA and protein in bone marrow stromal cells of ligustrazine group and saline group were lower than that in bone marrow stromal cells of normal group, but the expressions of bFGF mRNA and protein in ligustrazine group were obvionsly higher than that in saline group (P<0.01 or P<0.05). On day 28 after BMT, the expressions of bFGF mRNA and protein in ligustrazine group returned to normal level, while the expressions of bFGF mRNA and protin in saline group not returned to normal level, there was significant difference between these two groups. It is concluded that ligustrazine can enhance bFGF expression level in bone marrow stromal cells after syngeneic bone marrow transplatation in mice, which confirms that ligustrazine can enhance the repair of bone marrow microvessels, improve bone marrow microenvironment and promote hematopoietic reconstitution.