Objective: To determine the effect of K ATP on the reduction of blood pressure variability (BPV) caused by adenosine in conscious, freely moving sinoaortic denervated (SAD) rats. Methods: Using computerized analytic system of blood pressure (BP), five groups treated with adenosine, adenosine A 1 receptor agonist N 6 cyclopentyladenosine (CPA), A 2 receptor agonist 5′ N cyclopropyl carboxamido adenosine (CPCA), ATP sensitive K + channel (K ATP ) blocker glibenclamide, and CPCA with the K ATP blocked by glibenclamide in advance were used. BP, heart period (HP) and BPV were analyzed. Results: Both adenosine and CPCA significantly decreased BPV in SAD rats, but CPA had no influence on it. Glibenclamide markedly reduced BPV in SAD rats as well, furthermore, it might antagonize the effect of CPCA on BPV by blocking K ATP . Conclusion: K ATP plays an important role in the development of high BPV in SAD rats. [

Objective To study the relationship between the ascites, plasma ICAM-1 level and TMN stages in the patients with gastric cancers. Methods 35 gastric cancer patients were enrolled in this study. Flow cytometry and ELISA were used to quantitatively detect the ICAM-1 in gastric cancer ells and sICAM-1 in ascites and plasma of the gastric cancer patients, respectively. Results ICAM-1 expression level in the cancer cells was significantly higher than that in control normal cells,and was much higher in stage III than in stage II(P

Objective To evaluate the efficacy of metal stent placement for the treatment of malignant gastroduodenal obstruction. Methods Medical records of 24 patients with gastroduodenal obstruction secondary to malignant tumors (gastric cancer, 19 patients; pancreatic cancer, 4 patients; postsurgical biliary duct cancer, 1 patient) from October 2002 to November 2004 were reviewed. Under radioscopy, a self-expanding metal stent was placed endoscopically into the stenosis site of the stomach or the duodenum. Results All the metal stents were placed at the expected position. After operation the patients were given fluid diet at 1 day and soft diet at 3 days. No stent-related gastrointestinal perforation or hemorrhage was observed. Follow-up for 1~24 months in 21 patients found re-obstruction in only 2 patients and no migration of metal stents. Conclusions Self-expanding metal stent placement for malignant gastroduodenal obstruction is safe and effective.

Objective:Glucose-insulin-potassium(GIK) is clinically used for reducing mortality in acute myocardial infarction(MI). It is known that ventricular arrhythmia, left ventricular dysfunction and impaired baroreflex sensitivity(BRS) are the three major determinants for predicting the mortality after acute MI. The present work was designed to study the effects of GIK on BRS, ventricular arrhythmia, and left ventricular function in rats with coronary artery ligature. Sprague-Dawley rats were used and the myocardial infarction was produced by ligature of the left anterior descending artery. Five weeks after coronary artery ligation, BRS was measured in conscious state with a computerized blood pressure monitoring system and left ventricular function and electrocardiogram were determined in the anaesthetized state in the subacute phase of myocardial infarction. It was found that GIK did not affect the blood pressure and heart period in both conscious and anaesthetized rats. GIK did not enhance BRS, but reduced ventricular arrhythmia and improved left ventricular function by reducing left ventricular end diastolic pressure in anaesthetized rats with MI. It is proposed that reducing ventricular arrhythmia and improving left ventricular function contribute to the effect of GIK on reducing the mortality after MI.

Objective:To investigate the surgical treatment of adult Hirschsprung's disease (AHD). Methods: A retrospective clinical analysis was proceeded in 7 cases of AHD treated in our hospital from January 2003 to May 2008. There were 3 males and 4 females with an age ranged from 18 to 53 years,including three cases with general segment type,two cases with short segment type,one case with long segment type and one case with whole segment type. All cases were received the modified Duhamel operation. Results: All cases had satisfactory outcome without serious complications,such as soiling, blind pouch syndrome, fecal incontinence and sexual disorder in male patients. Pelvic hydrops occurred in one case and anastomotic inflammation occurred in another case,and both were cured by intensive therapy. Conclusion: The Modified Duhamel Operation is an effective and safe procedure for AHD. Through this procedure the postoperative recurrence rate is reduced, as well the sexual function and the defecate function are remained .

Objective:To investigate the protective effect of Intravenous Injection of Radix Astragali seu Hedysari on acute myocardiac infarction (AMI) in anesthetized dogs. Methods: Twenty health dogs were treated by ligating descending anterior of coronary with two-step method. The changes of electrocardiogram before and after ligation were recorded. After 4 hours myocardium were taken out and dyed with NBT to make sure of the extent of myocardiac infarction.Results: Intravenous Injection of Radix Astragali seu Hedysari could decrease the lethality of AMI, ameliorated ST changes on electrocardiogram induced by AMI, and reduced infarction area. Conclusions: Intravenous Injection of Radix Astragali seu Hedysari is effective in the treatment of AMI in anesthetized dogs.

Objective To study the alternation of coagulation and fibrinolysis in patients with gastric cancer(GC) . Method Platelet aggregation test(PAGT), prothrombin time (PT), activated partial thromboplastin time(APTT), tissue factor pathway inhibitor(TFPI), D-dimer and tissue plasminogen activator(t-PA: a)were detected in 48 GC patients(GC group) at two weeks pre- and post-operation respectively;and compared with non-tumor patients(control group). Results Compared with control group, in GC group,especially in GC patients with lymphatic metastasis,the PAGT increased (P

Objective The aim of the study WSfl to establish the method using CDl27 as the new biomarker to identify regulatory T cells(Treg cells)and apply the CD 127 to detect the Treg cells in patients with gastric cancer.Methods The phenotypes of Treg cells were analyzed using five-color flow cytometry method Foxp3.FITC/CD127-PE/CD4-PerCP/CD25-APC/CD3-PC7.The mRNA and protein expression of Foxp3 in isolated CD+4 CD25high CD127-/low Treg cells were detected.The relationships between Foxp3 and CD127 protein expression in CD4+ T cells from aduh human peripheral blood were investigated.PBMCs,Ascltes,turnor-infihration lymphocyte and tumor-draining lymph nodes in 35 patients with gastric cancer and PBMCs in 20 normal healthy donors were evaluated for the proportion of Treg ceils,as well as the percentage ot the total CD +4 cells.Results CD4+ CD25 high CD-127 low ceils expressed the high Foxp3 in protein level(87.1%)and mRNA level.Within the CD4+CD+25 population,there was a significant correlation between Foxp3 and the CD127low phenotype(r=0.985,P<0.01).Compared with healthy olunteers,patients with gastric malignancies had a higher proportion of CD4+4 Cdhigh 25 CD-low127 cells in peripheral blood(t=2.542,P<0.05).The Dereentages of Treg cells were more abundant in ascites(t=2.357,P<0.05),TIL(t=6.174,P<0.01) and tumor-draining lymph nodes(t=5.481,P<0.01)of individuals with gastric cancer than that in their blood.There were significant differences in the prevalence of Treg ceils between the early and advanced disease stages in gastric cancer[(6.04±2.31)%in stageⅠ+Ⅱ VB(10.16±2.29)% Ⅲ+Ⅳ,t=2.473,P<0.05].Conclusions The CD127 biomarker can be used to selectively enrich human Treg cells for in vitro functional studies.The populations of CD4+ CD high25 CD127-/low Treg cells increased ith tumor stage in individuals with gastric cancer.

Objective To investigate the populations of CD+4CD25high Foxp3+ regulatory T cells(Treg cells)and mRNA expression of Foxp3 in peripheral and the marginal region of tumor from patients with gastric cancer,and to evaluate the prevalence of Treg cells from patients with gastric cancer in relation to the TNM stages.Methods PBMC,Ascites,tumor-infiltration lymphocyte and tumor-draining lymph nodes in 47 patients with gastric cancer(TNM I11,Ⅱ18,Ⅲ10,Ⅳ8)and PBMC in 20 normal healthy donors were evaluated for the proportion of Treg cells,as a percentage of the total CD4+ cells,by flow cytometric analysis.Levels of mRNA for Foxp3 were measured witll a real-time quantitative PCR Results The percentage of CD4+CD25high Foxp3+ Treg cells in PBMC for cases of gastric cancer were significantly higher than those for healthv donors(P<0.05).The percentage of Treg cells were more abundant in ascites(P< O.05),1rIL(P<0.01)and tumor-draining lymph nodes(P<0.01)of individuals with gastric cancer than in their blood.And the Foxp3 mean fluorescent intensity (MFI) of Treg cells in TIL and tumor draining lymph nodes with gastric caners were significantly higher than PBMC and ascites(P<0.05).The proportion 0f Treg cell in patients of gastric cancers with stage I,II,Ⅲ,Ⅳ were(5.72±1.95)%,(6.45± 2.23)%,(9.58±3.13)%,(11.70±2.30)%,respectively.There were significant correlation between Drevalenee of Treg cells and disease stages in gastric cancer(r=0.784,P<0.01).Foxp3 mRNA levels were higher in PBMC from the group with gastric cancers than in the group with healthy donors.Foxp3 mRNA levels were correlated with TNM stages(r=0.623,P<0.05).Conclusions Our results suggest that the populations of CD4+CDhigh25 Foxp3+Treg cells and Foxp3 mRNA levels in patients with gastric cancer are signifieantlv higher in comparison to those in control donors.In addition,the expression of Fox：p3 mRNA increased with tumor stage.The increased prevalence of Treg cells may be one of the explanations for impaired cell-mediated immunity in cancer bearing hosts.

Objective:Clonidine,by activating peripheral α-sbrenoceptors, produces transient pressor response after i.v.injection in anesthetized animals.Moxonidine, with at least 40-fold higher affinity to I1-imidazoline receptors than to α2-adrenoceptors,produces also a transient pressor response. This work was designed to investigate whether I1-imidazoline receptors are involved in this pressor effect of moxonidine. Methods:Female spontaneously hypertensive rats(SHRs,aged 14-16 weeks)were anesthetized with urethane.To observe the transient pressor responses,moxonidine 0.1,0.3,1.0mg/kg(intravenous,i.v),2.0μg(intracerebroventricular,i.c.v.)and 1.0,10.0mg/kg(intragastric,i.g.)were administrated in different groups of rats.To evaluate the roles of α1-adrenoceptors,α2-adrenoceptors and I1-imidazoline receptors in the transient pressor responses to moxonidine, prazosin(10.0μg/kg),yohimbine(2.0mg/kg),phentolamine(0.2mg/kg),idazoxan(1.0mg/kg)or yohimbine+idazoxan(2.0mg/kg+1.0mg/kg)were intravenously given to the animals before moxonidine 0.3mg/kg (i.v.).Results:It was found that i.v.moxonidine produced a greater pressor response than clonidine when producing a similar reduction of blood pressure.This effect of moxonidine was not influenced by prazosin, but was partly inhibited by yohimbine, phentolamine or idazoxan,and completely blocked by the combination of yohimbine and idzaxon.Neither i.c.v.injection nor i.g. administration of moxonidine induced transient pressor responses.Conclusion:The transient pressor response of i.v. moxonidine is mediated by both peripheral I1-imidazoline receptors and α2-adrenoceptors.