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Objective:To study the correlation between liver imaging reporting and data system (LI-RADS) category with tumor differentiation, Ki67 index, microvascular infiltration, and predictive prognosis in hepatocellular carcinoma (HCC).Methods:We retrospectively analyzed the clinical and radiological data of 178 patients with HCC who were confirmed by histopathological studies after liver resection between January 2015 and September 2020 at Lishui Central Hospital and Lishui People’s Hospital. There were 156 males and 22 females, with age of (57±10) years old. These patients were assessed for LI-RADS categories according to the 2018 version of LI-RADS, and they were divided into 4 groups according to the assessment results: 12 patients with LI-RADS-3 (the LI-RADS-3 group); 26 patients with LI-RADS-4 (the LI-RADS-4 group); 102 patients with LI-RADS-5 (the LI-RADS-5 group); and 38 patients with LI-RADS-M (the LI-RADS-M group). The patients' general information, tumor markers, pathology and other clinical data were recorded. Correlation analysis between the LI-RADS category with pathology was performed by the Kendall's tau-b test. Survival analysis between groups was performed by the Kaplan-Meier analysis. The Cox regression risk model was used to analyze the relationship between these variables with the risk of death.Results:The Kendall's tau-b test showed that LI-RADS category was positively correlated with the degree of tumor differentiation ( t=0.204, P=0.002), but not with microvascular infiltration and Ki 67 index ( P>0.05). All patients were followed up for 4.2 to 84.2 months (median follow-up 36.3 months). By the end of follow-up, 31 patients had died and 147 patients were alive. The cumulative 1-year and 3-year survival rates of the LI-RADS-5 group were 97% and 90% respectively, which were significantly higher than those in the LI-RADS-M group (81% and 63%), and the LI-RADS-4 group (96% and 81%), ( P<0.05). The cumulative 1-year and 3-year survival rates of patients in the LI-RADS-3 group were 100% and 67% respectively, and there was no statistically significant difference with the LI-RADS-5 group ( P>0.05). The Cox multivariate regression analysis showed that tumor glycoantigen 199 (>50 μl/ml) to be an independent influencing factor in survival of HCC patients ( HR=0.43, 95% CI: 0.24-0.76, P=0.004). Conclusion:The LI-RADS category of HCC was positively correlated with the degree of tumor differentiation, and patients with HCC meeting the LI-RADS-5 criteria had relatively better prognosis.
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Objective@#To learn the characteristics of gastric cancer incidence and mortality in Lishui from 2014 to 2018，and to provide basis for prevention and control strategies for gastric cancer. @*Methods@#The data of gastric cancer in Lishui from 2014 to 2018 was collected from Zhejiang Chronic Disease Surveillance Information Management System. The incidence and mortality rates of gastric cancer were calculated，and the trend of them was evaluated by annual percentage change（APC）.@*Results@#The crude incidence rate of gastric cancer in Lishui was 44.77/100 000（5 650 cases）and the standardized one was 26.93/100 000. From 2014 to 2018，the incidence rates of gastric cancer showed a decreasing trend（APC=-0.79%，P<0.05）. The crude mortality rate of gastric cancer in Lishui was 25.39/100 000（3 205 cases）and the standardized one was 14.21/100 000. From 2014 to 2018，the mortality rates of gastric cancer were stable（APC=-4.61%，P>0.05）. The standardized incidence and mortality rates of gastric cancer in males were 34.77/100 000 and 18.35/100 000，which were higher than 16.77/100 000 and 8.52/100 000 in females（P<0.05）. The standardized incidence and mortality rates of gastric cancer in rural residents were 46.07/100 000 and 26.11/100 000，which were higher than 38.49/100 000 and 22.02/100 000 in urban residents. The incidence and mortality rates increased with age after 15 years old，and reached the peak at the age group of 80-84 years old.@*Conclusion@#The incidence and mortality of gastric cancer in Lishui from 2014 to 2018 were at a high level，which were higher in males than in females and were higher in rural than in urban areas；while the incidence had a downward trend.
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ObjectiveUsing the technology of siRNA to inhibit the gene expression of no-receptor tyrosine protein kinase Lck in T cells of asthmatic mice,and to study the therapeutic effect of Lck specific siRNA in asthmatic mice.MethodsReceptor tyrosine protein kinase Lck specific siRNA fragments were taken from chemosynthesis.In vivo-jetPEITM was used to transfect the siRNA into mice body through tail vein injection.The mice were killed 48 hours later,and the levels of IL-4,IL-17 in bronchoalveolar lavage fluid (BALF) were detected with respondent ELISA kits.The change of inflammatory histopathology in lung was observed with H.E.staining.The expression of Lck in lung was detected with immunohistochemistry (IHC),and the level of Lck in lung tissue homogenate was detected with Western Blot.Results Compared with asthmatic group[ (234.68 ± 11.15 ) pg/ml,( 96.76 ± 8.28 ) pg/ml],the levels of IL-4,IL-17 [ (234.68 ± 11.15)pg/ml,(96.76 ±8.28) pg/ml] in the BALF of siRNA interference group decreased, and the inflammation in the lung relieved.IHC indicated that the expression of Lck in lung decreased and the level of Lck in lung tissue homogenate decreased ( P ＜ 0.05 ).Conclusions Lck specific siRNA could reduce the level of IL-4,IL-17 in the lung tissues of asthmatic mice,and relieve the inflammatory reaction in lung.
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Objective Using the technology of siRNA to inhibit gene expression of T cells'nonreceptor tyrosine protein kinase Lck in asthmatic mice,and to study the effect of siRNA inhibited Lck to the function of T cells in asthmatic mice.Methods The 21 - 23 bp RNA fragments of mouse T cell Lck were made by chemosynthesis.INTERFERinTMsiRNA Transfection Reagent was used as transfection reagent to transfect the siRNA into the spleen T cells of asthmatic mice for 48 hours.Then T cells were mixed with bone marrow dendritic cells (DC) of asthmatic mice for another 48 hours.Cell culture suspension was collected and the level of IL-4,IL-13,IL-2,INF-γ were detected with respondent ELISA kits; Western Blot was used to identify if the expression of Lck was blocked.Results The expression of Lck in T cells almost could not be detected in siRNA interference group.The levels of IL-4 and IL-13 in siRNA interference group( 10.19 ± 1.66,12.34 ±0.79) were lower than no-siRNA interference(28.06 ±2.88,27.87 ± 1.61 )and control group ( 22.07 ± 2.5 1,20.47 ± 2.37 ),and the difference was statistical significant ( P ＜0.01 ).Conclusions Special siRNA could block the expression of special gene,and Lck specific siRNA could block the activation and differentiation of T cells and reduce the secretion of inflammatory cytokines in asthmatic mice.
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Objective To evaluate the clinical significance of multi - tumor markers combined detection in patients with idiopathic pulmonary fibrosis. Methods The serum levels of alpha fetoprotein (AFP) , careinoembryonic antigen (CEA), cancer antigen 125 (CA125) ,carbohydrate antigen 153(CA153) .carbohydrate antigen 199(CA199) were determined in 27 patients of idiopathic pulmonary fibrosis and 24 healthy volunteers. At the same time,the clinical indicators, such as lung function,were also measured in 27 patients. Results In comparison to control group, the serum levels of AFP, CEA,CA125 , CA153, CA199 were obviously lower than those in control group(P0.05). Conclusion Tumor markers,CA199 in particular,reflect the severity and poor prognosis of IPF patients and may also indicate the progression of pulmonary fibrosis, but they have nothing to do with disease activity.