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目的: 研究维生素E(VE)、硒(Se)及二者联合应用对四氯化碳(CCl4)作用下肝细胞、储脂(Ito)细胞、细胞外基质(ECM)产生的抑制作用。方法: 采用大鼠肝脏原位灌流、分离培养肝细胞和Ito 细胞。结果: VE、Se 能明显抑制CCl4 作用下大鼠肝细胞、Ito 细胞3H-脯氨酸(3H-Pro)掺入、Ⅲ型前胶原(PCⅢ)分泌,还可使Ito 细胞透明质酸(HA)、板层素(LN)、纤维连接素(FN)分泌减少。VE加Se在抑制肝细胞、Ito 细胞3H-Pro 掺入、降低丙二醛(MDA)释出,提高谷胱甘肽过氧化物酶(GSH-Px)活性,降低Ito 细胞HA、FN分泌诸方面优于VE或Se 的单独作用,并可使Se 的用量节省一半。结论: VE和Se具有抑制大鼠肝细胞、Ito 细胞ECM的作用;二者的联合应用效果更好,可望成为一种抗肝纤维化的新方法。
Objective: To study the inhibitory effect of Vitamin E (VE), selenium (Se) and their combination on hepatocytes, Ito cells and extracellular matrix (ECM) under the action of carbon tetrachloride (CCl4). Methods: Rat liver was perfused in situ and hepatocytes and Ito cells were isolated and cultured. Results: VE and Se significantly inhibited the incorporation of 3H-Pro into Ito cells and the secretion of type III procollagen (PCⅢ) in CCl4-treated rat hepatocytes, ), Laminin (LN), fibronectin (FN) secretion decreased. VE plus Se inhibits the incorporation of 3H-Pro in hepatocytes and Ito cells, decreases the release of malondialdehyde (MDA), increases the activity of glutathione peroxidase (GSH-Px), and decreases the secretion of HA and FN in Ito cells It is better than VE or Se alone, and can save Se dosage by half. Conclusion: VE and Se can inhibit the ECM of rat hepatocytes and Ito cells. The combined effect of the two is better and is expected to become a new anti-fibrosis method.