The laboratory experiment results showed that the mite, Schizotetranychus nanjingensis, could not survive below -10 °C and above 41 °C. Its optimum temperature for it was 20～25 °C. It had very high sur...The laboratory experiment results showed that the mite, Schizotetranychus nanjingensis, could not survive below -10 °C and above 41 °C. Its optimum temperature for it was 20～25 °C. It had very high survival rate at 2 °C.The survive, development and reproduction of the mite varied with photoperiod. The development could not complete in darkness, but the eclosion of eggs was normal. The highest survival rate from egg to adult mite was in a photoperiod of ≥12 h. The shortest period (13 91 d) from young mite to adult female mite was in a photoperiod of 8 h and the longest period (32 33 d) was in 5 h .In the photoperiod of 8 h,≥12 h, the female mite could oviposit normally and the quantity of eggs were 9 13 and 12 67,respectively .The adult female could not oviposit and had the shortest longevity (10 d) in a photoperiod of 5 h.展开更多
AIM To assess whether elevated serum carcinoembryonic antigen(CEA) is in the inferior prognosis for pathological lymph node-negative(p N_0) gastric cancer(GC) patients who underwent D_2 gastrectomy.METHODS About 469 p...AIM To assess whether elevated serum carcinoembryonic antigen(CEA) is in the inferior prognosis for pathological lymph node-negative(p N_0) gastric cancer(GC) patients who underwent D_2 gastrectomy.METHODS About 469 p N0 GC patients,who received D^2 radical gastrectomy were retrospectively analyzed. The X-tile plots cut-off point for CEA were 30.02 ng/m L using minimum P-value from log-rank χ~2 statistics,and p N_0 GC patients were assigned to two groups: those more than 30.02 ng/m L(n = 48;CEA-high group) and those less than 30.02 ng/m L(n = 421;CEA-low group). Clinicopathologic characteristics were compared usingPearson's χ2 or Fisher's exact tests,and survival curves were so manufactured using the Kaplan-Meier method. Univariate and multivariate analysis were carried out using the logistic regression method.RESULTS The percentage of vessel carcinoma embolus(31.35% vs 17.1%) and advanced GC(T_(2-4b))(81.25% vs 65.32%) were higher in CEA-high group than CEA-low group. The CEA-positive patients had a significantly poorer prognosis than the CEA-nagetive patients in terms of overall survival(57.74% vs 90.69%,P < 0.05),and no different was found between subgroup of T category,differentiation,nerve invasion,and vessel carcinoma embolus(all P > 0.05). Multivariate survival analysis showed that CEA(OR = 4.924),and T category(OR = 2.214) were significant prognostic factors for stage p N0 GC(all P < 0.05). Besides,only T category(OR = 1.962) was an independent hazard factor in the CEA-high group(P < 0.05).CONCLUSION Those pretreatment serum CEA levels over 30.02 ng/m L on behalf of worse characteristics and unfavourable tumor behavior,and a poor prognosis for a nearly doubled risk of mortality in GC patients.展开更多
文摘The laboratory experiment results showed that the mite, Schizotetranychus nanjingensis, could not survive below -10 °C and above 41 °C. Its optimum temperature for it was 20～25 °C. It had very high survival rate at 2 °C.The survive, development and reproduction of the mite varied with photoperiod. The development could not complete in darkness, but the eclosion of eggs was normal. The highest survival rate from egg to adult mite was in a photoperiod of ≥12 h. The shortest period (13 91 d) from young mite to adult female mite was in a photoperiod of 8 h and the longest period (32 33 d) was in 5 h .In the photoperiod of 8 h,≥12 h, the female mite could oviposit normally and the quantity of eggs were 9 13 and 12 67,respectively .The adult female could not oviposit and had the shortest longevity (10 d) in a photoperiod of 5 h.
基金Supported by Domestic Support from Young and Middle-aged key personnel Training program for provincial Health planning Students,No.2017-ZQN-18provincial Youth Health Science Research project,No.2014-2-8 and No.2017-1-13National key Clinical Specialty Construction project,No.2013-2016
文摘AIM To assess whether elevated serum carcinoembryonic antigen(CEA) is in the inferior prognosis for pathological lymph node-negative(p N_0) gastric cancer(GC) patients who underwent D_2 gastrectomy.METHODS About 469 p N0 GC patients,who received D^2 radical gastrectomy were retrospectively analyzed. The X-tile plots cut-off point for CEA were 30.02 ng/m L using minimum P-value from log-rank χ~2 statistics,and p N_0 GC patients were assigned to two groups: those more than 30.02 ng/m L(n = 48;CEA-high group) and those less than 30.02 ng/m L(n = 421;CEA-low group). Clinicopathologic characteristics were compared usingPearson's χ2 or Fisher's exact tests,and survival curves were so manufactured using the Kaplan-Meier method. Univariate and multivariate analysis were carried out using the logistic regression method.RESULTS The percentage of vessel carcinoma embolus(31.35% vs 17.1%) and advanced GC(T_(2-4b))(81.25% vs 65.32%) were higher in CEA-high group than CEA-low group. The CEA-positive patients had a significantly poorer prognosis than the CEA-nagetive patients in terms of overall survival(57.74% vs 90.69%,P < 0.05),and no different was found between subgroup of T category,differentiation,nerve invasion,and vessel carcinoma embolus(all P > 0.05). Multivariate survival analysis showed that CEA(OR = 4.924),and T category(OR = 2.214) were significant prognostic factors for stage p N0 GC(all P < 0.05). Besides,only T category(OR = 1.962) was an independent hazard factor in the CEA-high group(P < 0.05).CONCLUSION Those pretreatment serum CEA levels over 30.02 ng/m L on behalf of worse characteristics and unfavourable tumor behavior,and a poor prognosis for a nearly doubled risk of mortality in GC patients.
