不同海鞘醇提物体外抗乙肝HBsAg和HBeAg作用的比较

The comparison of the inhibitory effect of ethanol extract from different species of ascidean on HBsAg and HBeAg in vitro

目的研究皱瘤海鞘、冠瘤海鞘和大洋纵列海鞘乙醇提取物的体外抗乙肝病毒作用,对其进行比较,并推测其作用机制。方法用血清进行抗HBsAg、HBeAg、AntiHBs和AntiHBe的试验研究。结果当海鞘醇提物的浓度大于2g·L-1时,3种海鞘对HBsAg均有一定程度的抑制作用,当海鞘醇提物的浓度大于0.5g·L-1时,3种海鞘对HBeAg均有良好的抑制作用,它们在抑制两种抗原的作用上差异均无显著性。结论海鞘醇提物对乙肝患者血清中的HBsAg抗原和HBeAg抗原均具有一定程度的抑制作用,其抑制程度的大小与浓度有关。通过海鞘醇提物对AntiHBs、AntiHBe的作用结果推测,海鞘中用于抗乙型肝炎病毒的成分大致可以分为两类,一类具有类似抗体样的结构,可以通过与抗原结合形成无感染力的复合物来清除病毒;另一类则在对抗原具有明显抑制作用的同时对抗体亦有一定的抑制作用。

Aim To study the anti-HBV effect of alcohol extract from styela plicata Lesueur,styela canopus Savigny and symplegma oceania Tokioka in vitro and estimate their function.Methods An assay system based on the sera of HBV infection and HBV clearance was used to assess their inhibitory effects on HBsAg,HBeAg,anti-HBs and anti-HBe.Results Alcohol extract from the three species of ascidians all had a definite inhibition effect on HBsAg when the concentration was over 2 g·L -1 and a favorable inhibition effect on HBeAg when the concentration was over 0.5 g·L -1.There was no significant difference in inhibiting the two kinds of antigen.Conclusion Alcohol extract from the three species of ascidians all had the definite inhibition effects on HBsAg and HBeAg from serum of Hepatitis B patients.The inhibition effects were dose-dependent. From the effcets of alcohol extract on anti-HBs and anti-HBe,we can estimate that there are about two kinds of anti-HBV compositions.One has the similar structure with the antibody,which can exterminate the HBV by the way of forming a uninfectious combination with the antigen. The other has a definite inhibition effect on the antigen,and also has some inhibition effect on the antibody.