Objective To study the occurrence of asymptomatic coronary artery endothelial lesions,and its relationship with coronary heart disease(CHD).Methods From June 2003 to September 2004,120 patients with old myocardial infarction(OMI)and stable angina pectoris(SAP)were enrolled in this study.The angioscopy of non-culprit vessels was successfully performed to detect the endothelial lesions including yellow plaque,plaque rupture and/or thrombosis.Meanwhile,the relationships between coronary artery endothelial lesions and hypertension,diabetes mellitus(DM)and low-density lipoprotein cholesterol(LDL-C)were examined.Results Detailed angioscopic findings were obtained in 80 of the 120 patients(66.67%)(in 155 non-culprit vessels).These lesions demonstrated a significantly higher occurrence in patients with hypertension,in patients with high level of LDL-C and in patients with DM than in patients without endothelial lesions(P

Objective To devise an improved double J tube for ureteral stenting so as to simplify its postoperative removal. Methods One end of the double J tube was made blind and got through the urinary tract via the ureteral wall or via a weak point of the renal cortex.The blind end was then embeded in the subcutaneous tissue and the ureteral stent was left behind for 4～12 weeks.A small incision (0.5 cm) was made in order to withdraw the stent and cystoscopy could be avoided.The self devised tube has been clinically employed for 60 cases. Results The stent has been satisfactory in all the 60 cases and its postoperative removal has been easy with no need of cystoscopy. Conclusions The subcutaneous embedding of a blind end of double J tube is simple and effective and its postoperative withdrawal is easy with no need of cystoscopy.

Objective To evaluate the surgical treatment of bladder cancer near ureteral orifice. Methods 42 cases of bladder cancer requiring ureteral reimplantation were divided into two groups at random:20 cases in group A:tongue-shaped incision of bladder wall around ureteral orifice was performed to modify Huctch-Ⅱ ureter implantation and 22 cases in group B:severing the ureter just outside the bladder,the ureter was then implanted into the bladder after partial cystectomy.Duration of the procedure,blood loss,amount of post-operation drainage,early complication,bladder ureter reflux,ureter obstruction,and cancer recurrence rate were studied and compared. Results In group A,the surgery took 60.5?18.5 min,blood loss amounted to 50.6?12.8 ml and the post-operative drainage 50.6?17.8 ml.In group B,the operation needed 150.9?22.4 min,the blood loss amounted to 220.5?28.2ml and post-operative drainage 280.6?58.9 ml.All the above three indexes showed siginificant difference between the 2 groups (P0.05). Conclusions Tongue-shaped incision of bladder wall around the ureteral orifice better with less complication,technically easier and worth recommendation.

The paper gives an account of the building of the long-distance medical system, a project of Sino Japanese informationalized cooperation. It describes the configuration and structure of the long-range support system of clinical image diagnosis based on the Japanese technique of superhigh-defintion display, discusses the functions and characteristics of the long-distance medical system featured by superhigh-definition display and forecasts the prospects of the application of the system in China and the research and development of relevant projects.

Objective To evaluate the changes of platelet activity before and after anti-platelet treatment in pa?tients with coronary heart disease, and their responsiveness to clopidogrel through detecting the phosphorylation levels of va?sodilator stimulated phosphoprotein (VASP). Methods Twenty-eight cases of healthy people were selected as control group . Patients with chronic stable angina pectoris (CSA, n=95) were randomly divided into A (48 cases) group and B (47 cases) group,and were given clopidogrel 75 mg/d or 150 mg/d respectively;Patients with non ST segment elevation acute coronary syndrome (NST-ACS, n=67) were all given 300 mg loading dose of clopidogrel at the first time, then randomly divid?ed into C (33 cases) group and D (34 cases) group, and given clopidogrel 75 mg/d and 150 mg/d respectively. Blood were tak?en to examine the phosphorylation levels of serum VASP by ELISA before taking clopidogrel, at time point of loading dose and the fifth day of clopidogrel administration . Results Before treatment, phosphorylation levels of serum VASP were low?er in A, B, C, D groups than those in the normal control group(P<0.05). After treatment of clopidogrel for 5 days: ① In group A and group B ,phosphorylation levels of serum VASP did not change compared to that before treatment (P>0.05).②In group C and group D, phosphorylation levels of serum VASP were significantly increased at loading dose and the fifth day of clopidogrel administration than those before treatment (P<0.05), but there were no significant differences in phosphory?lation level of VASP was lower group between group C and group D after serum treatment (P > 0.05). Conclusion The phosphorylation level of serum VASP was lower in patients with coronary heart disease than that in normal control group. Clopidogrel can improve the phosphorylation level of serum VASP in NST-ACS patients .

Objective To explore the fibrotic stroma characteristics of orthotopic liver cancer in rat and the relationship with MR delayed contrast enhancement.Methods 4 Wistar rats with orthotopic liver cancer underwent conventional triphasal and longer-de-layed contrast-enhancement MR scanning.12 HCC specimens obtained from the four Wistar rats were sliced and stained with HE, picric-sirius red,Verhoeff Van-Gieson elastic fiber,Gordon-Sweets reticular fiber and anti-α-SMA immunohistochemical staining.The relationshp between intratumoral fibrotic stroma and MR delayed phases of the 1 2 tumors were analyzed.Results Collagen fiber was expressed mainly in tumor fibrous septum.Elastic fiber distributed in tumor fibrous septum and the artery wall.Reticular fiber dis-tributed in fibrous septum of the regenerative nodules,portal area and tumor psuedocapsule.Integrated optical density (IOD)value of collagen fiber,elastic fiber and reticular fiber analyzed by Image-pro Plus6.0 were 0.102±0.020,0.063±0.018 and 0.109±0.032, respectively.As a result,the amount of collagen and elastic fibers were statistically different (P<0.01),and so were reticular fibers and elastic fibers (P<0.01).And there was a positive correlation between collagen fiber and MR delayed contrast enhancement (P<0.05).Conclusion MR delayed contrast enhancement of hepatic cancer in rat is closely associated with the collagen fiber,thus this fiber in liver cancer can be evaluated noninvasively by MRI.

Objective To evaluate the impact of acute hyperglycemia on the short-term prognosis in patients with primary intracerebral hemorrhage (ICH) with meta-analysis. Methods The prospective or retrospective cohort studies or case-control studies of the relationship between baseline blood glucose levels and short-term prognosis (at least were followed up to discharge or 1 month) in patients with ICH within 24 hours were searched and reported. A meta-analysis software package (RevMan 4. 2) was used to pool data for the literatures in accordance with the inclusion criteria. The publication bias was analyzed and the sensitivity analysis was used to evaluate the stability of the results. Results The risk of mortality at the end of the follow up in the normoglycemia group was significantly lower than that in the hyperglycemia group (odds ratio 0. 24,95% CI 0. 19-0. 30; P <0. 000 01); the baseline plasma glucose level was significantly lower than that in the survival group (weighted mean difference -2. 30,95% CI -2. 36- -2.23; P< 0.000 01). Conclusions Acute hyperglycemia can significantly increase the risks of short-term mortality in patients with primary ICH. It is necessary to conduct a prospective randomized trial in order to investigate the effect of intensive glucose control on the prognosis of the patients with ICH.

Recent studies show that resveratrol is characterized with its antioxidative and anti-inflammatory effects, and plays an important role in the prevention and treatment of colorectal cancer through modulating intracellular carbohydrate and ceramide metabolism, activating tumor suppressors such as activator of transcription 3 and peroxisome proliferators-activated receptor γ, down-regulating the expression of kirsten rat sarcoma viral oncogene and inhibiting the epithelial-to-mesenchymal transition process of cancer cells.In addition,resveratrol exhibits its broad application prospects in combination therapy.

Objective: To investigate the effects of Pantoprazole on the expression of TFF1 in stress-induced gastric mucosal lesions in rats, and the mechanism thereof. Methods: Fifty-six rats were randomly divided into seven groups, normal group, model groups (3 groups) and model therapy groups (3 groups). The rat model of water immersion- restraint stress (WRS) was established in model groups, model group1(the immediately after establishing models), model group 2 (4 h after establishing models) and model group 3(8 h after establishing models). The model therapy groups were divided into model therapy group 1 (immediately after establishing models), model therapy group 2 (4 h after establishing models), and model therapy group 3 (8 h after establishing models). The ulcer index (UI) and histological changes were observed after WRS in rats. The expression of TFF1 was detected by immunohistochemistry. Results: After WRS, the gastric mucosa was widely damaged in rats. UI were increased and the expression of TFF1 was decreased in model groups. After intervention with Pantoprazole, UI was lower in model therapy group than those in model groups (model group 1 vs model therapy group 1,69.13±1.97 vs 23.38±1.30, P ＜ 0.01; model group 2 vs model therapy group 2, 57.50±8.81 vs 10.38±3.02, P ＜ 0.01; model group 3 vs model therapy group 3, 43.50±6.76 vs 5.88±1.25, P ＜ 0.01). The staining scores of TFF1 were increased (model group 1 vs model therapy group 1, 0.55±0.11 vs 0.92±O.15, P＜ 0.01; model group 2 vs model therapy group 2, 0.76±0.24 vs 1.36±0.21, P＜ 0.01; model group 3 vs model therapy group 3, 1.12±0.16 vs 1.65±0.11, P ＜ 0.01). Conclusion: TFF1 may participate in the protection of gastric mucosa and promote ulcer recovery. Pantoprazole may participate in the defense of gastric mucosa through mediating the up-regulation of TFFI expression.

Objective To explore the diagnostic values of dual energy lung perfusion in the diagnosis of pulmonary embolism by using dual-source CT (DSCT). Methods Thirty patients with clinically suspected pulmonary embolism underwent dual-energy scanning with dual-source CT. The scanned data were integrated into three groups including 140, 80 kV and coefficient of 0.3. According to the CT pulmonary angiography (CTPA) of the fusion data, the patients were divided into pulmonary embolism group and normal group. The thin-slice reconstruction of data was analyzed using dual-energy perfusion imaging analysis software. The lung field was divided into upper, middle and lower part to make quantitative analysis of lung tissue perfusion. Paired t-tests were used in the normal patients to compare bilateral lungs, and independent samples t-tests were applied to compare the embolism group and normal group, while minimum intensity projection images (MinIP) were utilized in the assessment of lung ventilation. Results Dual energy CT showed symmetrical homogeneous perfusion in 16 normal cases, without significant perfusion defects. Quantitative analysis showed that left and right lung perfusion were (27 ± 7) and (28 ± 8 ) HU respectively, and no significant difference was found between the two sides ( t=-1.73, P ＞0.05 ).Perfusion of the left upper, middle and lower lung was ( 23 ± 6), (24 ± 6), and (28 ± 8) HU respectively, while the perfusion of right upper, middle and lower lung was (26 ±8), (27 ±8), and (28 ±9) HU respectively, showing no statistical significant difference between the two sides (t=-1.91, -1.96,-1.73 ,P＞0.05 ). Angiography of pulmonary embolism group(14 cases)showed filling defects in the pulmonary trunk, segments and sub-segments. Pulmonary perfusion imaging showed low perfusion or defectsin lung field that dominated by embolic vessels. Quantitative analysis showed that the perfusion of the whole lung and the middle and lower lung were (22 ±5), (22 ±8), and (21 ±8) HU in the embolism group,which were significantly different from the normal group (t=-2. 10, -2.32, -2.63, P＜0.05).Minimum intensity projection images showed a good consistency of abnormal ventilation zone area and perfusion abnormalities. Conclusions Pulmonary perfusion status, especially pulmonary embolism, can be analyzed by dual energy CT scanning. It helps to early discover and precisely locate the embolism.