ObjectiveTo explore the effects of gastrin on the bcl-2-associated apoptotic pathways in cholangiocarcinoma.MethodsTUNEL technique and quantitative RT-PCR were used to examine the effects of gastrin-17(G-17) on the beauvericin-induced apoptotic index (AI) and expressions of bcl-2 and bax mRNAs. Antisense oligodeoxynucleotide (ODN) technology was conducted to investigate the role of bcl-2 in the gastrin-mediated inhibition of apoptosis in human cholangiocarcinoma cell line QBC939. ResultsThe AI and bcl-2 mRNA expression significantly decreased and increased respectively in the cells exposed to gastrin-17 compared with those of control cells (P

Objective To research the spatiotemporal pattern of N-cadherin expression during development of rat cardiomyocytes and age-related changes of N-cadherin expression. Methods Using immunohistochemical method,myocardial N-cadherins distribution was investigated in fetal rat and postnatal development(1 postnatal day to old rat),and quantitied by HIPAS-1000 computerized image analytical instrument. Results The expression of N-cadherin was located in myocardium of atrial and ventricule and septum interventriculare and papillary muscles.The N-cadherin immunolabeling was found in myocyte membranes and within cytoplasm in fetal rat heart.From neonatal to infant rat,the pattern of N-cadherin immunolabeling changed progressively,from being dispersed over the entire cell surface as in the fetal to the transverse terminals of the myocytes,toward the distribution within the intercalated disk.From young to old rat heart,the typical N-cadherin was located in transversely orientated intercalated disk.The percentage of N-cadherin immune postive area in rat ventricular myocardium showed a progressively changement with age.Conclusion The present paper demonstrated that the N-cadherin expression exists progressively with ages and the changing pattern of N-cadherin is closely related with development of the intercalated disk in rat myocardium.The mechanical coupling provided by adherens junctions is essential for the stable cell-cell contact.

171.1?mol/L) was 25.0%, 37.7% and 46.3%, the percentage of the fulminating hepatitis was 3.0%, 5.9% and 14.0%, and the mean hospital stay days for the convalescent patients were 31.59?18.97, 31.13?13.70 and 37.51?18.33 days, respectively. All these variables were significantly higher in aged group compared with youth and middle-aged groups. The levels of alanine transaminase (ALT) lowered significantly with the advance of age, and they were 1 711.7?1 063.4, 1 423.0?913.2 and 1 162.7?792.5U/L, respectively. The same was true in serum albumin and choline esterase (ChE). On the other hand, the percentage of acute hepatitis without jaundice decreased to 17.9%, 6.4%and 2.5% from the youth to the aged. However, TBIL on admission (131.41?106.97 vs 169.60?136.11 vs 164.36?106.22?mol/L) and the elevation of the peak of TBIL (135.01?109.15 vs 186.08?150.64 vs 209.63?143.74?mol/L) of the middle-aged and the aged were significantly higher than those of the youth. There was no significant difference in the symptoms, the ratio of direct to total bilirubin, mortality to complications among them. Furthermore, the serum IgM and IgG antibodies against HEV were negative in about 8.1% of the patients with HEV. Conclusion With a higher incidence and more severe hepatic damage, the middle-aged and the aged patients need a longer duration for recovery than the young patients.

Objective To investigate the differences of connexin 43(Cx43)expression between adult and infant heart. Methods By using immunohistochemistry to observe the expression of Cx43. Results 1.The expression of Cx43 had a punclate distribution in cytoplasm and over the entire surface of the cardiocyte,and a few located at intercalated disk of atrial and ventricular myocardium in the infant heart.2.Cx43 positive granules distributed irregularly in cell side surface and cytoplasm as well as intercalated disk in adult atrium.Cx43 immunolabelling of adult ventricular myocardium was typically confined to the site of intercalated disk.3.The results of image analyzer showed that the amount of connexin43 expression was lower in the atrium than that of the ventricle in infant heart and atrium bigger than ventricle in adult heart.The expression of Cx43 was less in adult heart than that of infant heart.Conclusion The expression of Cx43 was mainly over the entire surface of the myocardium in infant heart.There were expression differences of Cx43 in human ventricular and atrial myocytes.The amount of Cx43 expression was higher in ventricle than that of atrium in infant heart and atrium bigger than ventricle in adult heart.It was less in adult heart than that of infant.It showed that the expression of Cx43 in human heart existed a developmental differences.

OBJECTIVE To study the possibility of applying Anerdian skin disinfectant for blood donor skin disinfection. METHODS Put Anerdian at 21℃,35℃ and 42℃ to exposure in air for 24h,48h and 72 h,detect the volatilization volume,effective iodine and appearance of disinfectant,and evaluate its effect on blood donor elbow by culture method. RESULTS At 21℃ exposure for 24 h the volatilization rate for Anerdian was 5%,effective iodine was 0.215%.At 35℃ and 42℃ exposure for 24 h its volatilization rate was more than 5%,and effective iodine was within the range of 0.18-0.22%.The average killing logarithm value of elbow skin natural bacteria in 30 donors was over 1. CONCLUSIONS Anerdian disinfectant is suitable for blood donor predonation skin treatment.

BACKGROUND: Nuclear factor erythroid-2-related factor-2 (NF-E2-related factor-2) is an important transcription factor to regulate anti-oxidative stress reaction. Some researches indicate that NF-E2-related factor-2 can be phosphorylated by numerous members of protein kinase C family. In order to investigate generant mechanism of microwave radiation on oxidative stress injury, whether microwave radiation can influence on anti-oxidative regulating system through NF-E2-related factor-2 or not should be further studied. OBJECTIVE: To analyze the effect of microwave radiation on phosphorylation of NF-E2-related factor-2 and activity of protein kinase C in vascular endothelial cells.DESIGN: Observational-contrast study. SETTING: Department of Labor Hygiene, the Third Military Medical University of Chinese PLA.MATERIALS: Vascular endothelial cell strain; H332PO4; Protein-A Sepharose (Sigma Company); mono-antibody of NF-E2-related factor-2 (H-300, Santa Cruz); ?-mono-antibody of protein kinase C (Santa Cruz); glass microfiber filters (Whatman Company); gel scanning system (Gel Doc 2000, Bio-Rad); liquid scintillation spectrometer (LKB-117, Sweden).METHODS: The experiment was carried out in Laboratory of Electromagnetic radiation and Biological Effect, Department of Labor Hygiene, the Third Military Medical University of Chinese PLA from March to July 2003. ① Analysis of phosphorylation of NF-E2-related factor-2: Vascular endothelial cells were cultured with DMEM medium till the period of productive growth and incubated with 32Pi for 2 hours. And then, cultured bottle was maintained in water bath at 37℃ and performed with microwave radiation in dark chamber, whose reflectivity was about zero. It was regarded as radiation group, and the average power density of radiation was 30 mW/cm2; in addition, the duration of radiation was 30 minutes. Cells did not deal with microwave radiation were regarded as control group. Phosphorylation level of NF-E2-related factor-2 was measured at 2 , 4, 8 and 24 hours after radiation with immune coprecipitation-autoradiography technique and dealt with semi-quantitative analysis with gel scanning system. Cells in the control group were analyzed directly. ② Active analysis and expressional measurement of protein kinase C: Cells in the radiation group and the control group were dealt with the same cultured method, condition, radiation styles, dosage and environment as mentioned above. At 2, 4, 8 and 24 hours after radiation, cells were split to extract plasma and membrane protein. Furthermore, activity of protein kinase C was measured with r-32P-ATP labeled liquid scintillation spectrometer; gray value of protein strap was dealt with semi-quantitative analysis with gel scanning system; staining degree of plasma was observed after immunocytochemical staining of protein kinase C. In addition, cells in the control group were measured and observed directly.MAIN OUTCOME MEASURES: ① Phosphorylation level of NF-E2-related factor-2 in radiation group and control group; ② Results of active analysis and expressional measurement of protein kinase C in radiation group and control group.RESULTS: ① Phosphorylation level of NF-E2-related factor-2 in radiation group and control group: Gray value of NF-E2-related factor-2 was higher in radiation group than that in control group at 2, 4 and 8 hours after radiation. Phosphorylation level of NF-E2-related factor-2 reached the peak at four hours after radiation. In addition, results of semi-quantitative scanning analysis showed that, at 2, 4 and 8 hours after radiation, phosphorylation level of NF-E2-related factor-2 was increased 33%, 261% and 141% in radiation group as compared with that in control group, respectively (t = 2.974, 4.209, 4.047, P

BACKGROUND: Nuclear factor erythroid-2-related factor-2 (NF-E2-related factor-2) is an important transcription factor to regulate anti-oxidative stress reaction. Some researches indicate that NF-E2-related factor-2 can be phosphorylated by numerous members of protein kinase C family. In order to investigate generant mechanism of microwave radiation on oxidative stress injury, whether microwave radiation can influence on anti-oxidative regulating system through NF-E2-related factor-2 or not should be further studied.OBJ ECTIVE: To analyze the effect of microwave radiation on phosphorylation of NF-E2-related factor-2 and activity of protein kinase C in vascular endothelial cells.DESIGN: Observational-contrast study.SETTING : Department of Labor Hygiene, the Third Military Medical University of Chinese PLA.MATERIALS: Vascular endothelial cell strain; H332PO4; Protein-A Sepharose (Sigma Company); mono-antibody of NF-E2-related factor-2 (H-300, Santa Cruz); α-mono-antibody of protein kinase C (Santa Cruz); glass microfiber filters(Whatman Company); gel scanning system (Gel Doc 2000, Bio-Rad); liquid scintillation spectrometer (LKB-117, Sweden).METHODS: The experiment was carried out in Laboratory of Electromagnetic radiation and Biological Effect, Department of Labor Hygiene, the Third Military Medical University of Chinese PLA from March to July 2003. ① Analysis of phosphorylation of NF-E2-related factor-2: Vascular endothelial cells were cultured with DMEM medium till the period of productive growth and incubated with 32Pi for 2 hours. And then, cultured bottle was maintained in water bath at 37℃ and performed with microwave radiation in dark chamber, whose reflectivity was about zero. It was regarded as radiation group, and the average power density of radiation was 30 mW/cm2; in addition, the duration of radiation was 30 minutes.Cells did not deal with microwave radiation were regarded as control group. Phosphorylation level of NF-E2-related factor-2 was measured at 2, 4, 8 and 24 hours after radiation with immune coprecipitation-autoradiography technique and dealt with semi-quantitative analysis with gel scanning system. Cells in the control group were analyzed directly. ②Active analysis and expressional measurement of protein kinase C: Cells in the radiation group and the control group were dealt with the same cultured method, condition, radiation styles, dosage and environment as mentioned above. At 2, 4, 8 and 24 hours after radiation, cells were split to extract plasma and membrane protein. Furthermore, activity of protein kinase C was measured with r-32P-ATP labeled liquid scintillation spectrometer; gray value of protein strap was dealt with semi-quantitative analysis with gel scanning system; staining degree of plasma was observed after immunocytochemical staining of protein kinase C. In addition, cells in the control group were measured and observed directly.MAIN OUTCOME MEASURES: ① Phosphorylation level of NF-E2-related factor-2 in radiation group and control group; ②Results of active analysis and expressional measurement of protein kinase C in radiation group and control group.RESULTS: ① Phosphorylation level of NF-E2-related factor-2 in radiation group and control group: Gray value of NF-E2-related factor-2 was higher in radiation group than that in control group at 2, 4 and 8 hours after radiation.Phosphorylation level of NF-E2-related factor-2 reached the peak at four hours after radiation. In addition, results of semi-quantitative scanning analysis showed that, at 2, 4 and 8 hours after radiation, phosphorylation level of NF-E2-related factor-2 was increased 33%, 261% and 141% in radiation group as compared with that in control group,respectively (t = 2.974, 4.209, 4.047, P ＜ 0.05), and then, fallen down to normal value 24 hours later. ② Results of active analysis and expressional measurement of protein kinase C in radiation group and control group: At 2, 4 and 8 hours after microwave radiation, expression of protein kinase C in radiation group was higher than that in control group,especially at the 4 hour. In addition, at 24 hours after radiation, expression of protein kinase C recovered the normal value. Results of immunocytochemical staining showed that staining of plasma was deeper in radiation group than that in control group at 4 hours after radiation. Moreover, results of r-32P-ATP labeled liquid scintillation spectrometer also suggested that, at 2, 4 and 8 hours after radiation, activity of protein kinase C was increased 36%, 93% and 47% in radiation group as compared with that in control group, respectively (t =2.801, 3.654, 3.035, P ＜ 0.05). And then, activity of protein kinase C was decreased after 24 hours, otherwise, activity of protein kinase C reached the peak at 4 hours after radiation.CONCLUSION: Microwave radiation can strengthen the phosphorylation level of NF-E2-related factor-2 in vascular endothelial cells during a special period; meanwhile, it can also cause the increase of expression of protein kinase C.Time effect of activity of protein kinase C is coincidence with phosphorylation level of NF-E2-related factor-2.

Objective To probe into the feasibility of establishing a uniform reimbursement plan for hospitalization expenses under NRCMS in Nanjing city. Methods Hospitalization expenses in 2005 for peasants under NRCMS from the sour suburb districts and county in Nanjing were sampled. Based on this study, a reimbursement ratio was designed for such peasants as classified by "grades, sections and accumulated reimbursement". Results A uniform NVRMS reimbursement plan for hospitalization expenses may not be practical for all peasants in Nanjing. Yet such a plan of relative uniformity is worthy of experimenting as follows: no minimum for reimbursement;within the same expense range, reimbursement ratio may be measured and fixed accordingly among districts and county in the city, ranging 20%-70%;a uniform ceiling and reimbursement range are recommended. Conclusions A uniform city-wide plan requires by-step and planned implementations. With support from government finance, fund-raising gaps among these areas can be narrowed gradually, cutting back differences in their reimbursement plans in the end.

Objective To screen a gastric carcinoma subcell line with higher metastatic potential and to explore the relationship between the liver metastatic potential and liver microenvironment with the screened subcell line Methods A gastric carcinoma subcell line was screened via procedures of orthotopic transplantation of subcutaneous tumor of its parent cell line SGC 7901 in nude mice and primary tissue culture of its liver metastatic focus Expressions of bFGFR, TGF?R 1 and c Met(hepatocyte growth factor receptor) in both the subcell line and its parent cell line were determined by immunohistochemistry Results A gastric carcinoma cell subcell line(named SGC 7901LM 2) was established from its parent cell line SGC 7901 with higher metastatic potential, and the expression of c Met increased significantly in the screened subcell line Conclusion The screened gastric carcinoma subcell line with higher metastatic potential is helpful for the further studies of liver metastasis of gastric carcinoma The elevated expression of c Met may be helpful to the liver metastatic potential of SGC 7901LM 2

Objective To investigate antimicrobial resistance of Escherichia coli (E.coli )isolated from patients with bloodstream infection,and provide evidence for rational use of antimicrobial agents in clinical practice.Methods BacT/A-lert automated blood culture system and VITEK 2 automated identification system were used for bacterial culture and identi-fication.Antimicrobial susceptibility testing and detection of extended-spectrum β-lactamases (ESBLs)-producing strains were performed by Kirby-Bauer method.Results From 2009 to 2011 ,a total of 235 strains of E.coli were isolated from patients with bloodstream infection,90 (38.30%)of which were ESBLs positive strains.The resistant rates of ESBLs-producing strains to ampicillin,cefotaxime and ceftriaxone were all 100%,but susceptibility rate to imi-penem/cilastatin and meropenem were all 100%,to cefmetazole and amikacin were >90%.The resistant rate of non-ESBLs-producing strains to ampicillin was the highest (70.63%),susceptibility rate to imipenem/cilastatin and meropenem were both 100%,to amikacin,cefotaxime,and cefmetazole were all >95%.The resistant rate of ES-BLs-producing strains was significantly higher than that of the non-ESBLs-producing strains.Ofβ-lactamase inhibi-tor,only susceptibility rate of ESBLs-producing E.coli to cefoperazone/sulbactam was>90%,susceptibility rates to piperacillin/tazobactam and ticarcillin/clavulanate were both<80%.Conclusion Antimicrobial resistant rate of ESBLs-producing strains causing bloodstream infection is high,individualized treatment strategies should be made according to antimicrobial resistance of bacteria causing infection in patients.