Plasma A Ⅱ_2 was measured dynamicly by radioimmunoassay in rats after myocardial infarction, and its responses to captopril were studied too. The results showed that after myocardial infarction the concentraction of A Ⅱ rose markedly at first day, but it was sustained briefly and at third day , fell to the level before infarction. Plasma A Ⅱ decreased and was sustained at the almost unchanged level during Long—term captopril administra—tion in rats with infarction.

Objective To investigate the expression of S-phase kinase associated protein 2 (Skp2) in rats with acute liver failure (ALF) and its significance. Methods There were 256 male SD rats used in this study, among which 240 were injected with D-galactosamine (D-GaIN) to set up ALF model. The rats were divided into 3 groups: ALF model group, free hepatocellular transplantation group, microencapsulated hepatocyte transplantation group, which were intraperitoneally injected with 2 mL of RPMI 1640 culture medium, free hepatocellular suspension and microencapsulated hepatocyte suspension, respectively. The other 6 rats were in control group and the rest 10 rats were used for hepatocyte isolation. Expressions of Skp2 protein in hepatocytes of rats at different time points were detected by immunohistochemical technique. Levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST) and total bilirubin (TBil) were detected by automatic biochemistry analyzer. The survival rate in each group was observed. Comparisons among groups were done using one-factor analysis of variance. Results Levels of ALT, AST and TBil decreased more significantly by intraperitoneal transplantation of microencapsulated hepatocytes than those by intraperitoneal transplantation of free hepatocytes (P<0. 05). Skp2 labeling indices after 36 h of injection in ALF model group, free hepatocellular transplantation group and microencapsulated hepatocyte transolantation grouo were (28. 2±6.1) %, (41.4± 10. 5) % and (68. 0±10.8) %, respectively (F=29. 08 , P<0. 05). There were 4, 6 and 11 out of 15 rats survived in the 3 groups, respectively. Conclusion The dynamic observation of Skp2 expression could be used to judge the regeneration of hepatocytes.

Objective To evaluate the rationality, safety and efficiency of the time-limited rescue angioplasty following thrombolytic therapy in acute myocardial infarction (AMI).Methods Among the patients within 6 hours from the onset of symptoms of AMI, forty-four cases (group A) underwent primary coronary angioplasty and fifty-eight cases (group B) underwent firstly intravenous thrombolytic therapy. According to clinical early reperfusion indication within 90 minutes following thrombolytic therapy, group B was divided into two subgroups, the patients with early reperfusion (subgroup C) underwent delayed interventional examination 7～10 days after AMI and that with non-reperfusion (subgroup D) underwent rescue angioplasty. The reperfusion rates and complications in different groups were analyzed and compared. Cardiac function (left ventricular ejection fraction, LVEF) was evaluated by echocardiograph 4 weeks after AMI. Results The results showed that the rate of reperfusion, in group A, was 95.45% (42/44),that of subgroup C was 32.76 % (19/58) within 90 minutes following thrombolytic therapy (16 of subgroup C underwent delayed interventional examination and 12 of them underwent PTCA+stent) and that of subgroup D was 97.43% (38/39); There were no serious complications that occurred in subgroups C and D. The LVEFs in group A, subgroups C and D were not significantly different, but there was a significant difference between reperfusion within 6 hours and beyond after AMI (62.7% vs 56.8%, P

ObjectiveTo investigate the clinical characteristics and the way of discovery in early stage.Methods68 cases with asymptomatic pulmonary carcinoma living in Chongqing City who were discovered within health checkup were retrospectively analyzesed. ResultsThere were 62 males and 6 females,ages ranging from 28 to 78 years with an average of 52 years. In all patients,there were 56 cases (82.4%) with cigarette using history, 42 cases (61.8%) with family history of pulmonary carcinoma and 38 cases(55.9%) with cigarette using history and family history of pulmonary carcinoma. 65 cases (95.6%) were with peripheral type of lung cancer, 3 cases(4.4%) were with central type. Among these patients, 38 cases with adenocarcinoma ,18 cases with squamous carcinoma. There were 27 cases (39%) in Stage I, 38 cases(55.9%) in Stage II and 3 cases(4.4%) in Stage III. There were 43 cases (63.2%) without symptom while 25 cases(36.8%) with symptom of pulmonary carcinoma.ConclusionMost of patients with asymptomatic pulmonary carcinoma were middle-aged male and were adenocarcinoma or squamous carcinoma in cell type and had closed relationship with cigarette using history and family history.

[ABSTRACT]OBJECTIVETo investigate the cytomegalovirus infection in neonates, characteristics of gap junction protein Connexin26 gene mutation and the hearing follow-up results, and to analyze their correlations. METHODS60 CMV-DNA positive and 40 CMV-DNA negative neonatal newborn from The Second Affiliated Hospital of Wenzhou Medical University and The first people's Hospital of Yongkang were screened, the blood biochemistry was analyzed, and the umbilical cord blood was reserved to detect the Connexin26 gene expression of mRNA with RT-PCR.PCR results was sequenced to track the newborn hearing, and analyze the correlations between neonatal cytomegalovirus types, the mutation of Connexin26 gene and hearing test results.RESULTS 26 cases from 60 CMV-DNA positive newborns were found with blood biochemical abnormalities. In all of the newborns, a total of 41 cases had 235delC mutation, 11 cases in the mutations for the development of hearing impairment. The results of correlation analysis showed that there were correlations between cytomegalovirus infection, gene mutation and hearing impairment.CONCLUSION Cytomegalovirus infection in neonates can lead to mutations in the Connexin26 gene, and may further lead to hearing impairment, and the probability of the mutation of Connexin26 gene and sensorineural hearing loss were higher in symptomatic cytomegalovirus infection neonates.

Objective To evaluate the treatment effect of acute liver failure(ALF) by xeno-transplantation of co-microencapsulated Sertoli cells and hepatocytes and the intraperitoneal immune privilege effects of Sertoli cells on hepatocytes. Methods ALF rats were induced by intraperitoneal injection of D-galactosamine and, thereafter, were treated with physical saline, free hepatocytes, microencapsulated hepatocytes, or co-microencapsulated Sertoli cells and hepatocytes (CMSH), respectively. Alanine aminotransferase (ALT), aspartate aminotransferase (AST) and total bilirubin (TBil) were detected in rats' blood samples from various groups. Expression of Smac/Diablo and caspase-3 were determined by reverse transcription-polymerase chain reaction (RT-PCR). Fifteen rats in each group were used for survival rate analysis. The intraperitoneal microencapsules were observed and lymphocytes in ascites were counted. The data were analyzed by multi-factor or single factor analysis of variance and the comparison between groups was done by t test. Results In CMSH treatment group, ALT level decreased to (533.7 ± 76.5) U/L, AST level decreased to (381.2 5± 46.7) U/L after 48 h. TBil level reduced to (7.36 ± 2.18) μmol/L after 72 h. Albumin level increased to (28.4±2.5) g/L after 48 h. All these values were significantly different from those in other groups (F=10.7,6.5,12.2,8.4;P＜0.05). The expression levels of Smae/Diablo and caspase-3 mRNA at 48 h and 72 h were lower in CMSH group than in other groups (F=3.7,4.8,3.6,4.2; P＜0.05). Survival rates in microencapsulated hepatocytes group and CMSH group were similar while both of them were higher than other groups. Microencapsules neither in microencapsulated hepatocytes group nor in CMSH group were adhered to intraperitoneal mucosa. Lymphocyte counts in ascites of CMSH group were lower than those in microencapsulated hepatocytes group (t= 4.21, P＜0. 05). Conclusions Intraperitoneal transplantation with CMSH is a promising approach for ALF treatment. Furthermore, Sertoli cells can help reduce lymphocytes' aggregation caused by encapsulated hepatocytes in ascites.

Objective To investigate the changes of fractalkine (FKN) in rat model of acute liver failure (ALF) and the role of FKN in liver inflammatory injury.Methods SD rats were divided into tWO groups:6 in normal group and 36 in model group.D-galactosamine(D-Gal) was used to induce ALF in model group.The sera and hepatic tissue samples were collected at 12,24,48,72,120 andl68 h.After D-Gal injection.FKN mRNA and nuclear factor(NF)-kB mRNA in hepatic tissue samples were detected by reverse transcription-polymerase chain reaction (RT-PCR).Results The levels of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) at 12 h were(208.3±43.5)U/L and (375.2±117.3)lJ/L,respectively,which were both significantly higher than those in normal group[(31.8±2.9)U/L and (90.8±3.1)U/L](t=-9.912 and-5.935,respectively,both P<0.01);the levels of ALT and AST peaked at 72 h after D-Gal injection.The levels of FKN mRNA(O.086±0.009)in model group at 12 h were significantly higher than those (O.044±0.009) in normal group(t=-7.999.P<0.01),and peaked at 72 h (O.333±0.033),then decreased obviously at 120 h. The levels of NF-KB mRNA in the liver of normal rats were very little;and the levels in model group were increased gradually over time,then peaked at 72 h (O.583±0.i01,t=-12.607,P<0.01).FKN mRNA and NF0kB mRNA were positively correlated (r=0.760,P<0.01).Conclusion The FKN expression may play all important role in liver inflammatory injury in rat model of acute liver failure, which could provide a new approach for ALF therapy.

Objective To investigate the expression of TLR2 and HIF-1α in pancreatic cancer and explore the relationship between TLR2 or HIF-1α protein and the clinical or pathological changes in pancreatic cancer. Methods The mRNA of TLR2 and HIF-1α in 30 cases of pancreatic cancer and its adjacent tissues were detected with real-time PCR and with immunohistochemical methods in 65 cases of pancreatic cancer and 38 cases of corresponding adjacent tissues. The relationship between TLR2 or HIF-1α and pathologic features of pancreatic cancer was analyzed. The correlation between TLR2 and HIF-1α in pancreatic cancer was also assessed. Kaplan-Meier method was used to assess the impact of TLR2 or HIF1αexpression on survival. Results The relative quantification of TLR2 mRNA and HIF-1α mRNA in pancreatic cancer tissues was 0.84±0.17 and 0.87±0.11, respectively, which was significantly higher than that in adjacent tissues 0.70±0.13 and 0.68±0.13 respectively,P＜0.05. The protein expression of TLR2 and HIF-1α in pancreatic cancer tissues was 63. 10% and 70.8%, respectively, significantly higher than that in adjacent tissues (34.20% and 36.8%, respectively). There was no significant correlation between the expression of TLR2 or HIF-1α protein and the age, gender, tumor location, the degree of differentiation in patients with pancreatic cancer (P＞0.05). However, there was significant correlation between the expression of TLR2 or HIF-1α protein and tumor size, lymph node metastasis, venous invasion and clinical staging. TLR2 and HIF-1α had a significant impact on survival. Conclusion TLR2 and HIF-1α overexpressed in pancreatic cancer and TLR2 signaling pathway may promote development of the pancreatic cancer with HIF-1α together.

Idiosyncratic adverse drug reactions (IDR) induce severe medical complications or even death in patients. Alert structure in drugs can be metabolized as reactive metabolite (RM) in the bodies, which is one of the major factors to induce IDR. Structure modification and avoidance of alert structure in the drug candidates is an efficient method for reducing toxicity risks in drug design. This review briefly summarized the recent development of the methodologies for structure optimization strategy to reduce the toxicity risks of drug candidates. These methods include blocking metabolic site, altering metabolic pathway, reducing activity, bioisosterism, and prodrug.

Objective To study the functional connectivity (FC) pattern of anterior cingulated cortex in patients with vascular cognitive impairment with no dementia (VCIND) after subcortical ischemic vascular disease,and to analyze the relationship between FC and cognitive function.Methods Resting state functional magnetic resonance imaging (MRI) data were acquired from 14 patients with VCIND and 16 healthy volunteers with normal cognition.The altered functional connectivity pattern in VCIND was valuated by comparing to normal control.Then a correlation analysis was performed between the strength of FC and the Montreal Cognitive Assessment (MoCA) scores in patients with VCICD.Results (1) The visual space or executive function (3.14 ± 0.29),attention or computing power (3.79 ± 0.37),language (1.14 ± 0.21),directional power (4.14 ± 0.53) items,and the total points of MoCA (17.29 ± 1.53) in VCIND were significantly lower than that in the normal control group (4.93 ± 0.07,5.93 ± 0.07,2.93 ± 0.26,5.93 ± 0.07,27.57 ± 0.33 ; t =31.62,32.50,28.51,12.00,39.71,all P ＜ 0.05).While the abstract ability or memory (4.36 ± 0.74),the naming (2.79 ± 0.11) items in VCIND were not significantly different with that in the control group (4.79 ± 0.80,2.93 ± 0.07 ; t =1.76,1.00,both P ＞ 0.05).(2) Compared with the control group,the patients showed FC decrease between the anterior cingulated cortex and several brain regions,including the left middle temporal gyrus/left superior temporal gyrus,the left superior frontal gyrus/left middle frontal gyrus/left inferior frontal gyrus,the left posterior cingulated cortex/left precuneus,the left inferior parietal lobule/left angular gyrus,the right middle temporal gyrus/right superior temporal gyrus,the right orbit frontal cortex/right inferior frontal gyrus,the right inferior parietal lobule/right angular gyrums,and the right superior frontal gyrus/right middle frontal gyrus.There were also some regions that showed increased FC,which included the right posterior lobe of the cerebellum,the calcarine fissure,the left middle frontal gyrus,and the left precentral gyrus.(3) In the VCIND patients,the brain regions which positively correlated with the MoCA scores were the left inferior parietal lobule,the right middle temporal gyrus,the right superior frontal gyrus,and the left superior temporal gyrus.The negativerelated brain regions were the right posterior limb of internal capsule,the left middle temporal gyrus,the left precuneus,and the right anterior limb of internal capsule.Conclusions VCIND patients show abnormal FC pattern of anterior cingulated cortex,which could be the pathological basis of VCIND,and have certain predictive value for VCIND.