ABSTRACT
Objective To investigate the expression levels of IFN-γ, IL-4, IL-6 in the plasma of HBV chronic patients.To acknowledge the correlation between the immune function of T-cell with chronic hepatitis B virus.Methods The expression levels of IFN-γ, IL-4, IL-6 in the plasma were determined by ELISA in 42 cases of chronic hepatitis B (CHB group), 30 cases of cirrhosis (LC group), 30 cases of primary liver cancer (HCC group) and 30 cases of health control (NC group).Combine with the load of HBV DNA, HBeAg and ALT, the expression levels of IFN-γ, IL-4, IL-6 were re-analysed.Results The expression levels of IFN-γ, IL-4 and IL-6 in the researched groups were statistically significantly different.The expression levels of IFN-γ, IL-4, IL-6 in CHB, LC and HCC groups were higher than NC group with significance.The expression level of IL-4 in the CHB group was higher than LC and HCC groups with significance.The expression level of IL-6 in the HCC group was higher than CHB and LC groups with significance.Compared with the control group, the ratio of IFN-γ/IL-4 in CHB, LC and HCC groups were decreased with significance.There was significantly positive correlation between the expression level of IL-4 with the load of HBV DNA (r=0.757, P＜0.001).The expression level of IFN-γhad negative correlation between the load of HBV DNA (r=-0.786, P＜0.001) with the level of ALT (r=-0.713, P＜0.001) with significance.There was no significant correlation between HBeAg with the cytokines in the serum of patients with chronic HBV.Conclusion The results showed the immune function of T-cell play important role in chronic HBV patients.That would provide a good basis on CHB treatment.The expression levels of IL-6 were higher in HCC group with significance, which provided the direction for the deep study of liver cancer.
ABSTRACT
Objective: To design a system that can simulate earthquake surroundings. In the surroundings, people can be familiar with the omen, strong shock and aftershock of earthquake, thus make right choices and get away when the disaster occurs. Methods: The system consists of an electro-hydraulic servo system, a whole-information sound system and some lighting device; By using the adaptive inverse control method and LMS algorithms, the inverse model (i.e. the controller) is convergent rapidly; The software based on LabVIEW makes the parameters can be modified easily; There is a double dosed-loop structure in the system: an analog closed-loop and a digital closed-loop, and their parameters can be inspected in real time. Results: The system is of very high reliability, and the desired vibration signal can be tracked exactly by output. Conclusion: Earthquake surroundings is simulated vividly. Through the system, people can be familiar with earthquake phenomena, and know lots of knowledge of earthquake.