ObjectiveTo investigate the correlation with clinicopathologic factors and prognosis in pancreatic head cancer following radical resection. MethodsThirteen-eight patients with primary pancreatic head cancer admitted into Urumuqi General Hospital of Lanzhou Military Region from January 2000 to December 2007 were treated by radical resection, the clinicopathologic factors were retrospectively analyzed, the SPSS 17.0 analysis software was used to analyze the relation between clinicopathologic factors and prognosis. Results①The follow-up rate was 81.6%(31/38), the 1-and 2-year overall survival was 38.7% and 12.9%, respectively.②Spearman analysis showed that the distant metastasis was significantly correlated with the tumor size(rs=0.421, P=0.008)and TNM stage(rs=0.746, P=0.000); the lymph node metastasis was significantly correlated with TNM stage(rs=0.543, P=0.001)and was not correlated with tumor differentiation degree(rs=0.074, P=0.695), the tumor size was also significantly correlated with TNM stage (rs=0.475, P=0.003).③Univariate Chi-Square test revealed that the gender(P=0.045), tumor size(P=0.004), tumor differentiation degree(P=0.003), TNM stage(P=0.000), distant metastasis(P=0.002), and lymph node metastasis(P=0.001)were correlated with the prognosis of pancreatic head cancer. However, when the interactive effects of those factors were taken into account, TNM stage(P=0.001), differentiation degree(P=0.003), and lymph node metastasis(P=0.007)were selected as the most significant prognostic factors in a multivariate analysis by using the Cox proportional hazard regression model.④The survival rate of patients with low differentiation degree was significantly shorter than that of moderate/high differentiation degree(P=0.003), of patients withⅠ+Ⅱstages was significantly longer than that ofⅢ+Ⅳstages(P=0.000), of patients with distant metastasis or lymph node metastasis was significantly lower than those patients without distant metastasis or lymph node metastasis(P=0.002, P=0.001). ConclusionsThe lymph node metastasis is significantly associated with TNM stage, and is not associated with differentiation degree. The lymph node metastasis, differentiation degree, and TNM stage are related with survival, and they are also independent prognostic factors of pancreatic head cancer.
ObjectiveTo investigate the effect and significance of early coronary artery bypass graft (CABG) on the expression level of ionophorous protein at infracted border zone (IBZ) in dog with acute myocardial infarction. MethodsThe anterior descending coronary artery of all thirty healthy mongrel dogs were ligated into myocardial infarction model, whose successful criteria was that the regional myocardium supplied by ligated coronary artery became darker. Coronary artery bypass surgery performed at different time points after myocardial infarction (in the 1st week, the 2nd week, the 4th week, the 6th week respectively) was as an experimental group. While myocardial infarction without coronary artery bypass surgery was set up as a control group. Myocardial tissue without ligation of coronary artery was as a normal group. After 8 weeks, myocardial specimens were cut out in the experimental group and the control group. The local expression levels of ionophorous proteins such as Cav1.2, Kv4.3 and KchIP2 mRNA were detected by means of reverse transcription- polymerase chain reaction (RT-PCR) at normal myocardium and IBZ of the experimental group and the control group. ResultsFour dogs in every experimental group and all dogs in the control group survived to the end of the study. Three myocardial ion channel proteins expression in the control group were lower than those of the normal group or the experimental group significantly (P<0.01). Cav1.2 mRNA expression in the experimental group in the 4th week or the 6th week was lower than that in the normal group significantly (P<0.05). Kv4.3 and KchIP2 mRNA expression in the experimental group in the 4th week or the 6th week were lower than those in the normal group and the experimental group significantly in the 1st week or the 2nd week (P<0.05). ConclusionEarly CABG surgery for acute myocardial infarction could lessen the changes of expression level of ionophorous protein at infracted border zone (IBZ) of dog with acute myocardial infarction. Especially, CABG surgery among two weeks could improve expression level of ionophorous protein, and reduce the effect of ischemia for ionophorous protein and myocardial electrophysiology at IBZ.