Objective To study the impact of different low concentrations of cerium oxide for hepatocellular carcinoma cell prolifera-tion.Methods Three different types of hepatoma cells (Huh7, HepG2,7721) were cultured,and added different concentrations of cerium oxide (0.005,0.01,0.05,0.1,1 μg/mL),of which the cell proliferation was detected by CCK8.The apoptosis-related genes was detected by qRT-PCR technology.The cell cycle was analyzed by flow cytometry.And the effect of low concentration cerium oxide on hepatocellular carci-noma cells tumorigenicity was confirmed by the nude mice experiments.Results CCK8 experiment showed that low concentrations of cerium oxide could promote proliferation of hepatocellular carcinoma cell, especially in concentration of 0.01μg/mL.The qRT-PCR showed that low concentration of cerium oxide could inhibit the apoptosis of hepatocellular carcinoma cell.The flow cytometry analysis had not found any effect of cerium oxide on cell cycle.The tumorigenicity experiments confirmed that low concentrations of cerium oxide could enhance the tumorigenic ability of hepatocellular carcinoma cell.Conclusion Low concentration of cerium oxide can significantly improve the proliferation of liver cancer cells.

Objective To investigate the correlation between serum level of gamma-glutamyl transferase (GGT) and coronary heart disease (CHD) in military pilots. Methods Sixty male military pilots hospitalized in Airforce General Hospital having coronary angiography examination(CAG) from March 2005 to May 2015 were involved then were divided into CHD group (n = 24) and control group (n = 36) according to the results of coronary angiography (CAG). The patients with CHD were divided into low score group (Gensini score ≤ 20) and high score group (Gensini score > 20) according to Gensini score. Results There were significant increase of the level of TG, GGT and decrease of the level of HDL-C in CHD group than those in control group(P<0.05);there was no significant difference with the level of GTT between high score group and low score group (P > 0.05); logistic regression analysis showed that serum GGT was an independent risk factor of CHD in military pilots (OR = 1.168, P < 0.01). Conclusion Serum GGT is associated with CHD in military pilots and is the independent risk factor of CHD in the pilots.

The basic mechanical properties of a Radial Shock Wave Therapy Equipment (RSWTE) were experimentally studied in this paper. The output energy of the RSWTE working on the operation frequency of 10 Hz was measured by dynamic pressure transducer under the conditions of different operation pressure. The results showed that both operation pressure and operation frequency have effects on the output energy of the equipment. The output energy increases with the increase of operation pressure, and the magnitude of increased energy decreases with higher operation of frequency. With the increase of operation frequency, the output energy rises up in condition of lower operation pressure and drops off in condition of higher operation pressure. The accurate medical treatment should be selected with the optimized energy and condition according to the treatment requirement to different illness in clinical medical applications.
Equipment Design ; High-Energy Shock Waves ; Physical Therapy Modalities ; instrumentation ; Pressure