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Objective To determine the seasonal fluctuation and population distribution of Aedes albopictus in Jiading District， and provide scientific evidence for the prevention and control of dengue fever and other Aedes-borne diseases. Methods In 2020， the mosq-ovitrap method and mosq-ovitrap index （MOI） were used to monitor and evaluate the density of Aedes albopictus in Jiading District. Spatial and temporal distribution of Aedes albopictus was determined. Chi-square test was used for statistical analysis. Results In 2020， the annual average MOI was determined to be 4.10， which was under safety threshold. The seasonal fluctuations showed a unimodal distribution， which peaked in July. The fluctuation trend in urban area was similar to the overall trend， while that in the non-urban area showed a bimodal distribution with peaks in June and August. The density of Aedes albopictus at different monitoring sites varied widely，with the highest MOI （6.64） at Anting town and the lowest MOI （2.09） at Huating town. The distribution of Aedes albopictus in different habitats also varied widely； the highest density was observed in environments as waste collection stations and construction sites， with the highest MOI 33.33 in waste collection stations in peak season. The MOI value of Aedes albopictus in residential areas was significantly higher than that in non-residential areas （χ2 = 6.082， P = 0.014）. Conclusion Aedes albopictus is quite common in Jiading District. In certain areas， Aedes density may exceed the safety threshold from May to September. More targeted mosquito control measures should be implemented in waste collection stations， construction sites and residential areas.
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Objective To compare the value among three hilar cholangiocarcinoma (HCC) staging systems,Bismuth-Corlette classification,TNM staging system and MSKCC classification,in predicting the resection rate and prognosis of HCC patients.Methods The clinical and histopathological data of 154 HCC cases were analyzed retrospectively.Three different staging methods were performed respectively to analyze the correlations with respectability and survival.Chi-square test and Kaplan-Meier analysis were applied to find clinical and histopathological factors related to prognosis.Results There was no significant difference in resectability between Bismuth-Corlette classification or TNM stage Ⅰ,Ⅱ,Ⅲ and Ⅳ.The resection rates of MSKCC T1,T2 and T3 were 68.6％,44.8％,19.2％respectively (x2 =20.03,P =0.000).With higher T stage,resection rate obviously declined.The survival predicted by TNM staging and MSKCC classification was better than Bismuth-Corlette classification.Tumor differentiation,LN involvement,distant metastasis,margin status,TNM stage and MSKCC classification were significantly correlated with survival.Conclusions The MSKCC classification predicted resectability better than Bismuth-Corlette classification and TNM staging system,while both MSKCC classification and TNM staging system predicted survival better than Bismuth-Corlette classification.Clinical and histopathological factors such as tumor differentiation,LN involvement,metastasis,margin status,TNM staging,MSKCC classification were correlated with survival.
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Aim To establish an ideal hyperlipidemia animal model by a new way.Methods 30 mice were randomly divided into control group, positive control group and model group.The mice of control group were only fed with a standard diet.Those of positive control group were fed with high fat diet.Those of model group were fed with a standard diet and enough milk.After 30 days the TG, TC, HDL-C and LDL-C of serum and hepatic and LI were detected and pathological changes in the liver of mice were observed microscopically.Results Compared with the control group, the mice of model group developed hyperlipidemia with LI and the serum and the hepatic TG, TC, LDL-C elevated significantly, while HDL-C were significantly lower.The histopathological research showed hepatocellular macrovesicular steatosis and hepatitis in the model group.Conclusion An ideal model of hyperlipidemia is successfully established with standard diet and milk fed to mice for 30 days.
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Objective To study the operative technique and operative field exposure of laparoscopic splenectomy (LS). Methods The clinical data of 11 cases including 1 case of cirrhosis with splenosis and 10 cases of idiopathic thrombocytopenic purpura (ITP) who underwent laparoscopic splenectomy since June 1999 were analyzed retrospectively. Results 9 cases of LS were successfully performed. 6 cases took dorsal desubitus position, whose mean operative time was 3.5 hours and mean blood loss was 200ml. The operative time of the case who took right lateral desubitus position was 4 hours and the blood loss was 80ml. 2 cases took right inclined lateral desubitus position, and the operative time was 2.5 hours and 3.0 hours and the blood loss all was 100ml. 1 ITP patient of the 9 cases underwent novo-laparotomy in 6 hours after LS because of intraabdominal hemorrhage. 2 ITP cases required conversion into open splenectomy. Conclusions Satisfactory exposure and dissection of peri-splenic ligaments and constitution as well as successful control of splenic pedicel are the