Objective To observe the effects and mechanism of ischemic postconditioning(IPo) on alleviating injuries of small intestine and remote organs induced by intestinal ischemia-reperfusion (IR).Methods A total of 48 rabbits were divided randomly into three groups(n =16 in each):the Sham group,the IR group and the IPo group.After 2 hours of reperfusion,arterial and venous blood and tissues of intestine,liver and lung were harvested.The levels of TNF-α,IL-1β,IL-6 and IL-10 in arterial blood and levels of ALT,AST,BUN,Cr,LDH,CK-MB activity and endotoxin in venous blood were tested.MDA, CAT,SOD and MPO levels in serum,small intestine,liver and lung were also measured.HE staining was performed for observation of injured intestinal mucosa.Bacterial translocation rate was calculated after bac-teria culture.Results Compared with the IR group,MDA and MPO levels in serum,small intestine,liver and lung decreased in the IPo group,while CAT and SOD levels increased obviously.Compared with the IR group,ALT,AST,LDH,CK-MB and BUN levels in the venous blood,and TNF-α,IL-1β,IL-6 and endotox-in levels in arterial blood were all decreased.IL-10 increased and the intestinal mucosal injury score de-creased obviously.Conclusion Ischemic post conditioning can decrease the damage of intestinal mucosa, reduce endotoxin translocation,promote activation of anti-inflammatory cytokines,inhibit excessive release of inflammatory mediators,enhance the antioxidant capacity of intestine and remote organs,reduce injuries to the small intestine and remote organs.

Objective To investigate the expression of Skp2 and C-myc in hepatocellular carcinoma and its relationship with clinicopathologic characteristics.Methods The expression of skp2 and C-myc was evaluated in hepatocellular carcinoma tissues of 48 patients,liver cirrhosis tissues of 20 cases,and normal liver tissues of 16 patients by immunohistochemistry(PV9000 two steps methods).Results The expression rate of skp2(33.3%) in hepatocellular carcinoma tissues was significantly higher than that in liver cirrhosis tissues((negative) expression)(P=0.008)and normal liver tissues(negative expression)(P=0.020).The(expression) of skp2 was correlated with histological differentiation and metastasis(P﹤0.001 and P=(0.017)),but not with tumour size(P=0.058),and it was not expressed in highly differentiated(hepatocellular) carcinomas.The expression rate of C-myc protein in hepatocellular carcinoma tissues((58.3)%) was significantly higher than that in liver cirrhosis tissues(15%)(P=0.001) and normal tissues((negativ)e expression)(P

Objective To investigate the role and prognostic impact of E-cadherin( E-cad)on in-vasion and metastasis of gastric carcinoma by analyzing E-cadherin expression at DNA,RNA and protein levels. Methods RNA and protein expression of E-cad were tested in 60 cases of gastric carcinoma and adjacent tissues by streptavidin peroxidase( SP )immunohistochemistry and in situ hybridization. DNA methylation of E-cad was tested with methylation-specific polymerase chain reaction( MSP). Results The positive rates of E-cadherin protein and mRNA in gastric carcinoma were significantly lower than those in adjacent tissues. DNA methylation of E-cad negatively correlated with the E-cad protein and RNA expres-sion in gastric carcinoma respectively(r= -0. 355,r = -0. 271). DNA methylation of E-cad negatively correlated with the 5-year survival rate of gastric carcinoma(r = -0. 381,P ﹤0. 01). However,E-cad protein positively correlated with the 5-year survival rate of gastric carcinoma(r=0. 378,P﹤0. 01). Con-clusion The decreased expression of E-cad is one of the most important biological features in gastric car-cinoma. Methylation of E-cad DNA may be an important agent causing low expression of E-cad protein and mRNA and it can be used as an important indicator in predicting invasion and metastasis of gastric cancer.

Objective To observe the therapeutic effects of extracorporeal shock wave therapy (ESWT) combined with autologous bone marrow stem cells (BMSC) transplantation in treating early-stage osteonecrosis of the femoral head (ONFH).Methods Forty patients diagnosed as stage Ⅰ or Ⅱ according to the classification of osteonecrosis of the femoral head put forward by the Association Research Circulation Osseous were randomly divided into a treatment group and a control group with 20 cases in each group.Both groups were treated with BMSC transplantation,while the treatment group was further treated with ESWT the next day.Harris scores were assigned before the treatment and 3,6,12 and 24 months after the treatment to evaluate hip function,the degree of pain and the effects of the treatment.Frog-bit X-rays of the anteroposterior pelvis were taken to assess the stages.Results There were significant differences in the Harris scores and pain degree of the two groups before and at the different time points after the treatment.After 6,12 and 24 months,significant differences were observed in the two values between the two groups.After 12 months the number of hips rated excellent,good and medium level were 8,18 and 1 in the treatment group and 5,13 and 8 in the control group,showing significant differences.Conclusion Extracorporeal shock wave therapy along with autologous bone marrow stem cell transplantation can be used to treat patients with early stage osteonecrosis of the femoral head,relieving their pain and improving their joint function.

Objective To conduct a Meta analysis based evaluation of dual-source computed tomography (DSCT) in the diagnosis of coronary artery disease (CAD). Methods Literatures publicated from January 2006 to July 2009, including in English or Chinese languages, were searched in Medline,China National Knowledge Infrastructure (CNKI), and Chinese Medical Assosiation Digital Periodicals (CMADP). A study was enrolled if it: ( 1 ) used DSCT angiography as the diagnostic test for the detection of significant coronary stenosis ( ≥50% diameter stenosis) in patients with suspected CAD; (2) used coronary angiography as the reference standard. The pooled sensitivity and specificity of the 95% confidence interval (95% CI) were acquired based on the bivariate random-effects modol. Hierarchical weighted symmetric summary receiver-operating curve (HSROC) was also estimated. The pooled likelihood ratios were calculated based on the pooled sensitivity and specificity. Combined with the pooled likelihood ratios, the clinical utility of the results was estimated according to Bayes'theory. Results Total of ten articles enrolled in this study, included 1271 patients. The mean rate of nonevaluable patients and segments were 5.6% (33/590) and 2. 3% (271/11 745 ), respectively. The pooled statistical results were as follows: the sensitivity and specificity were 99% (97%-99% ) and 86% (79%-90% ), respectively; the positive and negative likelihood ratio were 6. 84 and 0. 01, respectively. If a pre-test probability was below 84%, the likelihood of disease was less than 5% on a negative diagnosis of DSCT. If a pre-test probability was above 13%, the likelihood of disease was more than 50% on a positive diagnosis of DSCT. Conclusions DSCT angiography presents good diagnostic performance in the detection of CAD; however, it could not completely replace conventional coronary angiography.

Objective To investigate the effect of Plastrum Testudinis on neural stem cell after focal cerebral ischemia.Methods Rat models of focal cerebral ischemia were established by inserting nylon thread into the anterior cerebral artery.Immunohistochemical method was used to detect the expression of the neuroepithelial stem cell protein(Nestin),neurologic deficit and histological features were also observed.Results Plastrum Testudinis can decrease the neurologic dificit score and promote the expression of Nestin.Conclusion Plastrum Testudinis can alleviate the neurological symptoms and promote the proliferation of neural stem cell after focal cerebral ischemia.

Objective: To explore the effect of Plastrum Testudinis on the three subtypes of NOS (nNOS,iNOS,eNOS) expression in rats with focal cerebral ischemia. Methods:Rat model of focal cerebral ischemia was set up by inserting nylon thread into the internal carotid artery . The expressions of nNOS, iNOS and eNOS was detected by immunohistochemical method to observe the effects of Plastrum Testudinis. Results: Expressions of nNOS and iNOS in cerebral cortex and caudate-putamen of Plastrum Testudinis treatment group were significantly lower than those of model control group (P

Objective To investigate the effects of Deanxit on elderly patients with anxiety and depression symptoms after percutaneous coronary intervention (PCI).Methods The Hamilton Anxiety Scale (HAMA) and Hamilton Depression Scale(HAMD) were used to evaluate the anxiety and depression symptoms in elderly patients (more than 70 years old) with coronary heart disease after PCI.Thus,80 patients with anxiety and depression after PCI were singled out,they were randomly divided into Deanxit group (n =40,2 Deanxit tablets daily) and control group (n =40,conventional therapy).HAMA and HAMD scores were performed after treatment for 12 weeks.Results HAMA and HAMD scores of the Deanxit group were (10.2 ± 5.7) points,(11.8 ± 6.2) points,which were significantly lower than (17.8 ±5.5)points,(18.3 ±4.3)points in the control group (P =0.012,P =0.020).Conclusion Deanxit can significantly improve the anxiety and depression symptoms in elderly patients after PCI.

ObjectiveTo evaluate the efficacy and safety of the angiotensin Ⅱ receptor blockers (ARB) in reducing portal hypertension ( PHT) in patients with cirrhosis.Methods PubMed,EMBASE,Web of Science,The Cochrane Central Register of Controlled Trials,Chinese BiomedicalDatabase,ChineseJournals Full-text Database and WanFang Digital Journal Full-text database were searched.Statistical analysis was performed by meta-analysis using RevMan4.2 software.ResultsAmong 8 randomized controlled trials ( RCT) including 282 patients met the inclusion criteria,4 trials were analyzed to compare the ARB with the placebo or no treatment and the other 4 trials were analyzed to compare the ARB with propranolol.Meta-analysis results were as follows.(1) The ARB resulted in more significant hepatic venous pressure gradient ( HVPG) reduction as compared with the placebo or no treatment [ WMD =1.87 mm Hg (1 mm Hg =0.133 kPa),95％CI ( 0.86-2.87 )mmHg,P =0.00003 ].Andthe ARB were similar to propranolol in reducing HVPG [ WMD =0.92 mm Hg,95％ CI ( - 0.41-2.26)mm Hg,P =0.17 ].(2)The ARB led to more significant reduction in mean arterial pressure than the placebo or no treatment [ WMD =8.89 mm Hg,95％ CI( 7.16-10.62)mm Hg,P ＜ 0.00001 ],but they were similar to propranolol had no significant difference.And the ARB had no significant effect on the heart rate of the patients,which was similar to no treatment group ( P ＞ 0.05 ).Whereas,propranolol could greatly decrease heart rate of the patients ( WMD =- 21.25,95％ CI - 25.83-16.68,P ＜ 0.000 01 ).( 3 ) No significant differences were found in serum bilirubin and creatinine levels between the ARB and the placebo or no treatment groups ( P ＞0.05).The rate of nonspecific adverse events was higher in the ARB groups than in the placebo or no treatment groups ( P =0.03 ),but it showed there was no difference between the ARB and propranolol groups (P =0.72).ConclusionThe ARB is effective in reducing portal hypertension in patients with cirrhosis,which is similar to propranolol.Their effects on mean arterial pressure is similar to propranolol without significant effects on hear rate,liver functionand kidney function,and with less nonspecific adverse events.The ARB could become a new choice for the treatment of portal hypertension.

Objective To investigate the effect and possible mechanism of oxytocin on the expression of NO and ET-1 in precon-ditioning myocardium of rats with ischemia .Methods The rats were randomly divided into ischemic reperfusion group(I/R) ,ische-mic reperfusion + oxytocin pretreatment group(I/R+OT) ,sham operation group(SH) and nomal control group(N) .The myocar-dial ischemia-reperfusion model was induced by 25 min coronary occlusion and 120 min reperfusion in opened-chest anesthetized rats ,rats of SH group were not conducted with ligation but threading only .Group I/R+ OT were administered oxytocin(0 .03 g/kg ,i .p)25 min prior to ischemia ,the other three groups were given the same amount normal saline .After reperfusion ,nitric oxide (NO) ,endothelin-1(ET-1) ,creatin kinase isoenzyme(CK-MB)and lactate dehydrogenase(LDH)in blood serum were measured .At the end of reperfusion ,HE stain was used to observe the morphology of the cardiac muscular tissue .Results Pathological observa-tion showed that the myocardial cell in group SH and in X ranged in order ,with no fibers fractured ,myocardial fibers in I/R group were fractured and disorganized ,interstitial edema ,neutrophil infiltration were also observed .It was more serious in group I/R than in group I/R+OT .Compared with SH group ,the CK-MB ,LDH ,ET-1 of the I/R group and I/R+OT group increased ,the NO de-creased(P<0 .05) ,and it had no difference in group N and group SH (P>0 .05) Compared with the I/R group ,in I/R+OT group the expression of CK-MB ,LDH ,ET-1 were decreased ,the level of NO increased(P<0 .05) .There was a negative correlation be-tween NO and ET-1 in group I/R and I/R+ OT (P< 0 .05) .Conclusion Oxytocin pretreatment on rat myocardial ischemia and reperfusion has protective effect ,and its action mechanisms maybe associated with the increase of the content of NO and the de-crease of the content of ET-1 in blood serum .