Objective To observe the effect of photodynamic reaction and sclerosant on venous en dothelial cells and to evaluate the potential significance of photodynamic therapy on esophageal varicose. Methods Endothelial cells of human umbilical vein ( ECV304) were cultured in DMEM medium containing 10% fetal bovine serum; 2. 5, 5, 10 and 20 mg/L of hematoporphyrin monomethyl ether were added to the cell mediums then received 5 or 10 minutes of irradiation by copper vapor laser at power density 15 mW/ cm2. MTT colorimetric assay was used to detect the cell survival rate, then drew the cell growth curve and observed the morphological changes of venous endothelial cell induced by photodynamic and sclerosant. Results Cell survival rate decreased along with the increasing dosage of irradiation or hematoporphyrin monomethyl ether. When hematoporphyrin monomethyl ether was 10 mg/L and irradiation time was 10 minutes or hematoporphyrin monomethyl ether was 20 mg/L and irradiation time was 5 minutes, the cell survival rate was less than 50%. Normal endothelial cells entered exponential growth stage from the 2nd day of culture, showing an "S" shape growth curve. After photodynamic irradiation the endothelial cells grew slowly and decreased from the 2nd day of culture, showing a low flat growth curve without exponential growth stage. Number of cells in photodynamic group was significantly lower than those of control group at 2nd, 3rd, 4th, 5th and 6th day ( P = 0. 002 , P

Objective To investigate the correlated factors concerning esophago-gastric variceal bleeding and sclerotherapy in liver cirrhosis. Methods Twenty-six factors were selected for 670 patients with liver cirrhosis and esophagogastric variceal bleeding and received sclerotherapy in our hospital. Spearman relationship analyses were performed on factors concerning esophagogastric variceal bleeding and sclerotherapy. Results Duration and number of episodes of bleeding were not related to grade of esophagogastric varices, diameter of portal vein and hepatic function but negatively related to ascites and hypersplenism.Severity of bleeding was not related to all of the above parameters. Esophageal varices related to gastric varices while neither of them related to diameter of portal vein. Result of sclerotherapy related to grade of esophageal varices, and negatively related to number of operations in first-period sclerotherpy, supplementary sclerotherpy and total number of operations as well as to amount of scleroant of first-period sclerotherpy and total amount of scleroant. Types of sclerosant had no relationship with result of sclerotherapy. Conclusion Esophagogastric variceal bleeding is affected by multiple factors. Diameter of portal vein is not the only factor. Result of sclerotherapy is affected by number of operations and amount of scleroant and has nothing to do with types of sclerosant.

Objective　To investigate the relationship of the expressions of common β (βcR) and specific α chains of IL-5, IL-3 and GM-CSF receptors with the eosinophils（Eos） apoptosis for the roles of these receptors in asthma. Methods　All of 12 guinea pigs were equally randomized into normal and ovalbumin sensitized asthmatic group. The apoptosis of hypodense and normodense Eos in bronchoalveolar lavage fluid (BALF) was detected by TUNEL method. The expression of common β and specific α chains of the 3 receptor mRNA were measured with RT-PCR and in situ hybridization. Results　More Eos were observed in asthmatic group than in normal group, especially those in hypodense (P<0.01). The apoptotic rate of Eos in BALF were significantly lower in asthmatic group than in normal animals (P<0.01), but no difference was found between hypodense and normodense Eos. Compared with normal group, the expressions of the 3 receptor mRNA α chains were decreased in asthmatic group than in normal group (P<0.01), but βcR expression was increased significantly. More IL-3 Rα and GM-CSFRα mRNA were expressed in hypodense Eos than in normodense Eos. The contents of IL-5Rα and IL-3Rα mRNA were lower in asthmatic group than in normal group. Conclusion　The apoptosis of Eos is inhibited in BALF from guinea pigs with asthma. The expressions of IL-5, IL-3 and GM-CSF receptors in Eos are regulated through 2 mechanisms: the reduced expressions of their specific α chains which attenuating the negative regulation on Eos activation and inhibited apoptosis and the increased expressions of their βcR which enhancing the positive regulation on the 2 aspects. These data suggest that IL-5, IL-3 and GM-CSF receptors might be involved in the pathogenesis of asthma through regulating the apoptosis of Eos.

Objective To analyze the clinical manifestation, diagnosis and treatment of acute mesenteric vascular obliteration (AMVO). Methods 112 cases of AMVO were analyzed, including 20 cases admitted to our hospital from 1992 to 2004 and 92 cases reported by other hospitals. Results Abdominal pain, abdominal distension, nausea and vomiting, decrease or disappearance of bowel sound, elevation of white blood cell count were more frequent manifestations.Cardiovascular disease, portal vein stasis or hypercoagulation state were common findings in patients' history. The average misdiagnosis rate of AMVO in these 112 patients was 61.5%, with a misdiagnosis rate of 45.0% in 20 cases of our hospital. The average mortality rate of all these patients was 41.9%, with a mortality rate of 30.0% for 20 cases of our hospital. Conclusion The early clinical manifestation of AMVO lacks specificity, the misdiagnosis ratio and mortality rate are very high. Angiography should be done early to confirm the diagnosis and improve the therapeutic effect in the patients suspicions of having this ailment.

Objective To investigate the rule of changes in endoscopic and endoscopic ultrsonic findings after endoscopic variceal sclerotherapy in the follow-up period. Methods Patients suffered from esophagogastric variceal bleeding and received endoscopic variceal sclerotherapy were investigated. Patients with liver cirrhosis after viral heptitis and their varices eliminated or reduced to grade Ⅰor Ⅱ after sclerotherapy entered this study for at least 5 years' follow - up. Endoscopic and endoscopic ultrsonic findings were recorded to find its course of transformation. Results Lumens of varices were occluded by thrombus and eventually replaced by white fibrous tissue after endoscopic sclerotherapy. Vessels reappeared within e-sophageal wall gradually after a lot of time in the form of formation of new venules (93. 8% ) or re-vascular-ization (6. 2% ) . Newly formed varices within gastric wall after sclerotherapy were seen in 5. 3% of the cases and some cases of duodenal varices were also found rarely in the follow-up. Endoscopic ultrasonic finding confirmed the revascularization and dilatation of vessles after sclerotherapy. Conclusion From the follow-up results it indicates that varices would reappear gradually after endoscopic sclerotherapy, regular re-examination and appropriate treatment in time are the most important measure to assure its long term effect.

Objective To investigate the incidence of hepatocellular carcinoma (HCC) among patients with esophageal varices bleeding previously treated with endoscopic sclerotherapy, and to evaluate the factors influencing prognosis of HCC patients.Methods The clinical data of patients (from April 1987 to May 2003) who had received sclerotherapy for esophageal varices bleeding, and also that of HCC patients who had had sclerotherapy for esophageal varices bleeding were retrospectively reviewed. The survival rates of HCC patients were evaluated with Wilcoxon-Gehan method. Sixteen risk factors for HCC were assessed by multivariate analysis (Cox model). Results A total of 934 cases were treated with sclerotherapy, among which 109 patients suffered from HCC while 825 patients did not. In 22 HCC patients with esophageal varices bleeding sclerotherapy was not given. 31 out of 825 patients (3.76%) developed HCC during the follow-up period. 17 out of 31 patients received regular follow-up while 14 cases did not. The median surviving time of 31 patients was 13 months. The survival rate of patients with HCC under regular follow-up was significantly higher than that of patients under irregular follow-up(P=0.0002); risk factors, i.e. Child-Pugh classification, age and regular or irregular follow-up, were significantly related to the prognosis of patients with HCC(P=0.039、0.029 and 0.021, respectively). Conclusion Surveillance of patients with decompensated liver cirrhosis may increase the diagnostic rate of small HCC and prolong life expectancy; sclerotherapy can lower the incidence of HCC and it may play an active role in decreasing the incidence of HCC.

AIM: To study the anti-cancer effects of octreotide on the proliferation of liver cancer cells. METHODS: The liver cancer cells SMMC-7721 were cultured in RPMI-1640 media with 10% fetal bovine serum, 100 U?ml -1 penicillin and streptomycin. 10 -5, 10 -4, 10 -3 and 10 -2 g?L -1 of octreotide were added and MTT colorimetric assay were used to detect the growth inhibition rate. DNA staining and cell cycle analysis were done at 0, 6, 12, 24 and 36 hours after medication when the concentration of octreotide was 10 -3 g?L -1. RESULTS: MTT colorimetric tests showed that octreotide suppressed the growth of liver cancer cells. 48 hours after medication, the cell growth inhibition rate was 9.33%, 12.70%, 19.70% and 20.93% when the octreotide concentration was 10 -5, 10 -4, 10 -3 and 10 -2 g?L -1 separately. Cell cycle analysis showed that the percentage of G 0-G 1 phase cells increased and the percentage of G 2-M phase cells decreased. CONCLUSION: Octreotide inhibits the cultured liver cancer cells proliferation in vitro, its mechanisms may be related to preventing the G 0-G 1 phase cells from going into G 2-M phase.

Objective:To investigate the relation between expression of Bcl-2,Bax and eosinophils(Eos) apoptosis,explore effect of Bcl-2 and Bax on asthma.Methods:Guinea pigs were divided into normal and asthmatic group randomly. Ovalbumin was used to prepare model of asthma in guinea pig. Apoptosis of Eos in BALF was detected.mRNA expression of Bcl-2 and Bax in Eos were measured by hybridization and RT-PCR.Results:Comparing with normal group,Eos in BALF from asthmatic group were significantly higher; the percentage of apoptotic Eos from asthmatic group were significantly lower( P

Objective To improve the cognition of abnormal changes of the medial soft tissue of styloid process (MSTSP) in nasopharyngeal carcinoma after radiotherapy. Methods CT scans of nasopharynx in 39 cases with NPC that had change at the MSTSP in NPC after radiotherapy were performed.CT findings of recurrence and non-recurrence at MSTSP were studied and compared carefully.Results In the recurrence cases, the MSTSP was thickening and compactness in all cases, in the non-recurrence cases ,only 37.04% (10/27) were thickening and compactness at MSTSP. In all the cases which had thickening and compactness of the MSTSP, the borders were slightly protruding in 9 cases and the borders were straight in 3 cases in the recurrence cases, while the borders were straight in 7 cases and the borders were slightly hollow in 3 cases,and there wasn't any case appeared as protruding of borders in the non-recurrence cases. All the cases were dealt with statistic methods and had remarkable difference between them(P

Purpose:To find out the clinical biology value of p53 overexpression on Chinese breast cancer by Meta analysis. Methods:Reviewed all the published studies during the recent 10 years regarding p53 and breast cancer, and used standard techniques of Meta-analysis to combine the results of these studies to produce a more precise estimate of the prognostic significance of p53 mutations.Results:the mean of p53 positive express was 45%,95% confidence interval (43-47)%:, p53 positive was related with node metastasis, recurrence after surgery, over survival, tumor size and nuclear grade, but not related with age and pathology type, p53 was a special and sensitive prognostic factor for breast cancer.Conclusions:p53 can be an independent molecular marker to definitive prognostic of breast cancer, and possibly can be a reliable marker for choice of standard and individulized therapy.