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Objective To compare the efficacies of total gastrectomy (TG) and proximal gastrectomy (PG) for patients with upper gastric cancer.Methods Databases including Medline,Cochrane Library,Web of Science,China National Knowledge Infrastructure,Wanfang database were searched to retrieve literatures on surgical treatment of upper gastric cancer which were published from January 1980 to October 2011.According to different surgical procedures,all the patients were divided into PG group and TG group.Meta analysis were performed by RevMan 5.1.Categorical variables were presented by odds ratio (OR) and 95％ confidence interval (95％CI).Results Thirteen literatures including 2622 patients with upper gastric cancer were retrieved.There were 1464 patients in the TG group and 1158 patients in the PG group.There was no significant difference in the 1-year survival rate between the 2 groups (OR =1.23,P ＞ 0.05).The 3-and 5-year survival rates of patients in the TG group were significantly higher than those of the PG group (OR =1.74,1.45,P ＜ 0.05).There were no significant difference in the 5-year survival rates of patients in TNM Ⅰ,Ⅱ,Ⅳ stages between the 2 groups (OR =0.94,1.31,2.03,P ＞ 0.05),while the 5-year survival rate of patients in TNM Ⅲ stage of TG group was significantly higher than PG group (OR =2.29,P ＜ 0.05) The overall recurrence rate of TG group was slightly lower than that of PG group,with no significant difference OR =0.44,P ＞ 0.05).The local recurrence rate of TG group was significantly lower than that of PG group (OR =0.29,P ＜ 0.05).There was no significant difference in the distal recurrence rate between the 2 groups (OR =0.60,P ＞ 0.05).Conclusions The medium and longterm efficacies of TG are superior than that of PG.The stage of cancer should be taken into account to determine the plan of individual treatment.
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<p><b>OBJECTIVE</b>To study tissue culture of Vinca minor and determine the content of vincamine.</p><p><b>METHOD</b>Leaf blades, stalks, root segment of V. minor were used as explants to study the effect of 2, 4-D,6-BA,NAA on its callus induction and vincamine contents in the orthogonal design experiment. In the peak period of callus formation, vincamine content in callus of V. minor and sterile plants was determined by HPLC. The experimental data was statistically analyzed.</p><p><b>RESULT</b>The content of 6-BA and NAA had no significant effect on its callus induction. But the content of 2, 4-D had significant effect on its callus induction. Within 20,40,60 d, the content of vincamine in sterile plant was (0.015 +/- 0.003)%, (0.097 +/- 0.001)% , (0.113 +/- 0.06)%, respectively. In the peak period of callus formation, vincamine content in callus of leaf blades, stalks, root segment was (0.024 +/- 0.0025)%, (0.016 +/- 0.0015)%, (0.010 +/- 0.0015)%, respectively. To 30 days of subculture, vincamine content in callus of leaf blades, stalks, root segment was (0.041 +/- 0.002)%, (0.019 +/- 0001)%, (0.016 +/- 0.002)%, respectively.</p><p><b>CONCLUSION</b>The optimal hormone combination for callus initiation was MS +2, 4-D 1.0 mg x L(-1) +6-BA 0.5 mg x L(-1) + NAA 0.5 mg x L(-1). In different growth periods, vincamine content in sterile plants is significantly different. From different explants in callus vincamine content is different, in which leaves callus is significantly higher than that of stems, roots produced callus organization.</p>
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Culture Techniques , Methods , Linear Models , Plant Infertility , Vinca , Chemistry , Physiology , VincamineABSTRACT
Objective: To establish a RP-HPLC for determination of bergenin in Rodgeris aesculifolia batal from different sources. Methods : Chromatographic conditions were as follows: C 18 column(5?m, 4.6mm?150mm,i.d), was adopted, mobile phase consisted of 25% ethanol and 75% water. The column temperature was set at (30?1)?C. The flow rate was 1.0mL?min -1 and the detection wavelength was at 275nm. Results : The method was proved to be linear in the range of 0.8～4.0?g with a regression coefficient of 0.9993. The average recovery was 99.95% with RSD 3.0%( n =5). The minimum detection limit was 0.1ng. Conclusion : The method is proved to be quick, simple and highly sensitive. There is some relationship between the bergenin contant and different sources of raw materials.