Objective To study the possible relationships between expression of matrix metalloproteinase(MMP)2,9 and the pathogenesis of preeclampsia in which trophoblast invasion is impaired. Methods MMP-2,9 expression were detected by immunohistochemistry streptavidin-biotin complex (SABC)method in 20 normal term placentae and 20 preeclampsia placentae,respectively.In addition, mRNAs for MMP-2,9 were analyzed by real time PCR in both groups.Results The intensities of both MMP-2 and MMP-9 immunostaining in preeclampsia placentae were significantly declined compared to those of normal term placentae(P

Objective To test the hypothesis that homocysteine can decrease MMP-2 and MMP-9 expression in cultured trophoblasts of early pregnancy and that homocysteine can prevent trophoblasts invasion in the early stage of preeclampsia.Methods Cytotrophoblasts from early pregnancy were isolated and cultured.Trophoblasts were treated with or without Hcy(1 mmol/L)for 48 hour,and real time RT-PCR and gelatin zymography were used to quantify the mRNA and protease activity of MMP-2,-9.Results Treatment with Hcy(1 mmol/L)induced a decrease in MMP-2 mRNA by 21% and MMP-9 mRNA by 11%.At protein level MMP-2 expression decreased 14% and MMP-9 expression decreased 52% compared with control.Conclusions Homocysteine can decrease MMP-2,-9 expression in trophoblasts of early pregnancy and influence its invasion process.

Objective To assess the clinical significance of the application of computer assisted navigation technology in excision for sacrum tumor.Methods From December 2007 to June 2009,13 patients with sacrum tumor were treated with computer navigation assisted aggressive curettage.There were 5 males and 8 females.aged 21 to 69 years,with the mean age of 44 years,10 cases were over the level of sacrum3 and 3 cases under the sacrum3.Pathologic diagnosis was chordoma in 7 cases.giant cell tumor in 4 cases and neurofibroma in 2 cases.Five cases were recurrence.The preoperative data of CT and MRI were input into the computer navigation workstation.CT images determined the scope of the invasion of tumor in bone tissue.MRI determined the scope of the invasion of tumor in soft tissue.The CT and MRI image fusion identified the precise boundaries of the tumor in CT images and made markers for navigation guidance in the operative in 10 cases.The Iso-c scan had been made for another 3 cases and fused the Iso-c images with preoperation CT images for improving the images quality.According to preoperative marker in CT images,the aggressive curettage were completed with the real time computer navigation for 7 cases,marginal resection in 4 cases and wide resection in 2.The precise surgical removal of the lesions boundary were verified by computer navigation according to the preoperative planning.Results Thirteen patients were followed up for 7 to 37 months,an average of 18 months,no recurrence cases with marginal resection and wide resection.Two cases with aggressive curettage had recurrence.Conclusion Computer navigation technology helps to precise excision the sacrum tumors,to reduce the recurrence rate.

Objective To explore the value of CT venography in the surgical treatment of falcotentorial junction meningiomas. Methods CT venography was carried out in 25 patients with falcotentorial junction meningiomas. 2-D and 3-D images were reformatted at the workstation. The classification and relationship between the tumors and veins were determined, and the degree of venous stenosis and collateral were assessed. The safe surgical pathway was chosen to avoid the injury of main draining vein. Results Falcotentorial junction meningiomas were divided into 5 types according to the relationship between the tumors and veins and the direction of the tumors. There were 5 cases of forward type, 4 cases of backward type, 3 cases of inferior type, 6 cases of superior type and 7 cases of lateral type in this group. The relationship between tumors and veins was accordant with the findings in surgery. Of all 25 cases, 19 underwent total removal, 6 underwent subtotal removal and all of the main driving veins were reserved. There were 3 cases of quadrantanopsia or hemianopsia after the operation, and all of them recovered after 3 months of follow-up. Conclusion CTV technique can classify the falcotentorial junction meningioma and is helpful for choosing the appropriate surgical approaches.

To enhance the immunogenicity of DNA and adenoviral vector vaccines expressing HIV-1 subtype B gp160, human interleukin 15 (hIL15) DNA adjuvant (pVR-hIL15) was constructed. BALB/c mice received DNA prime/protein boost immunization with pVR-HIVgp160/Ad5-HIVgp160 alone or combined with pVR-hIL15. Cellular and humoral immune responses were evaluated by IFN-gamma enzyme-linked immunosorbent spot assay and enzyme-linked immunosorbent assay, respectively. Compared with those immunized with vaccines alone, the mice immunized with vaccines combined with pVR-hIL15 had significantly increased specific cellular response and antibody titer (P < 0.05). It suggests that the IL15 DNA adjuvant can enhance the immune responses induced by prime-boost regimen using DNA and adenoviral vector encoding HIV-1 subtype B gp160.
Adenoviridae ; genetics ; Adjuvants, Immunologic ; Animals ; Antibodies, Viral ; immunology ; Antibody Specificity ; Female ; Genetic Vectors ; genetics ; HIV Envelope Protein gp120 ; immunology ; HIV Envelope Protein gp160 ; genetics ; immunology ; HIV Envelope Protein gp41 ; immunology ; Humans ; Immunity, Cellular ; Immunity, Humoral ; Interleukin-15 ; genetics ; Mice ; Mice, Inbred BALB C ; Vaccines, DNA ; genetics ; immunology

A quantitative analysis method of multi-components with a single marker (QAMS) for simultaneous determination of six marker compounds (one from phenolic acids and five from phthalides) in Chuanxiong Rhizoma was established by applying HPLC and using butylidenephthalide as the internal reference substance. And also the feasibility and accuracy of the established method for quality evaluation and application of Chuanxiong Rhizoma were investigated and validated. The analysis was performed with the mobile phase consisting of acetonitrile - 0.2% aqueous formic acid. The flow rate was 1.0 mL . min-1 and the column temperature was maintained at 30 °C. The detection wavelengths were set at 252 nm (for ferulic acid, Z-ligustilide, and butylidenephthalide) and 266 nm (for senkyunolide I, senkyunolide A, and coniferyl ferulate), separately, and 20 µL was injected for analysis with gradient elution. The results showed that there were no significant differences observed between the HPLC-QAMS method and the external standard method (RSD <5%). The relative correction factors were credible (RSD < 5%) in changed chromatographic conditions. The established HPLC-QAMS method can be accurately used for simultaneously evaluating and controlling the quality of Chuanxiong Rhizoma with multi-components.
4-Butyrolactone ; analogs & derivatives ; Acetonitriles ; Benzofurans ; Chromatography, High Pressure Liquid ; Coumaric Acids ; Drugs, Chinese Herbal ; analysis ; standards ; Hydroxybenzoates ; Quality Control ; Rhizome ; chemistry

Objective To explore the treatment of deep-vein indwelling catheter in infant patients with subdural hematoma and hydrops. Methods Deep-vein indwelling cather wes used in treatment of 19 cases infant patients with subdural hematoma and hydrops. These cases include acute subdural hematoma(9 cases), chronic subdural hematoma(6 cases), subdural collection of fluid(4 cases).Deep-vein indwelling cather which set in subdura and constantly drain is to treat infant patients with subdural hematoma and hydrops via anterior fontanelle puncture. Constantly drainage last 3～5 days.Results All puncture and deep-vein indwelling catheter were successful. The cranial CT was rechecked in 1～7 days after operation. Subdural hematoma and subdural collection of fluid were nearly removed.All patients are survival. Conclusions The treatment of deep-vein indwelling catheter in infant patients with subdural hematoma and hydrops is safe and effective.

Objective To investigate the application of two-factor theory of nursing students to improve the quality of teaching.Methods for nursing students of 2009,through the application of two-factor theory,to take effective measures to meet the health factors,and use incentives to improve nursing students to learn initiative and enthusiasm,for the nursing students of 2008,using the traditional clinical teaching methods.Results The 2008 nursing students theory test scores for (83.94 ±8.21 )points,operation test scores for (81.28 ±6.54)points,zongping scores for (82.47 ± 6.89 )points; The 2009 nursing students theory test scores for (87.17 ± 5.13 )points,operation test scores for (85.24 ± 4.61 )points,zongping scores for (86.27 ± 7.14)points,two groups of comparisons were statistically significant differences(t =-3.72,-4.14,-3.97;P ＜0.05).Conclusions Thetwo-factor theory can improve nursing students to learn initiative and enthusiasms to improve the quality of teaching.

OBJECTIVETo evaluate the safety of simultaneous and staged resection for synchronous liver metastasis from colorectal cancer.

METHODSPubMed/Medline, ISI Web of Knowledge, Springer link, ebscohost, Elsevier Wiley Interscience, Google Scholar were searched for case-control studies concerning simultaneous versus staged resection of synchronous liver metastasis from colorectal cancer between January 1989 and March 2009. A meta-analysis was performed to analyze the morbidity and perioperative mortality.

RESULTSSeven case-control studies, with a total of 1390 patients of liver metastasis from colorectal cancer undergone curative hepatic resection, were reviewed. There were 495 simultaneous and 895 staged resections. Perioperative mortality was 1.1% in the staged resection group and 2.4% in the the simultaneous group, the difference was statistically significant[Peto OR 3.39, 95% CI 1.29-8.93, P=0.01]. No significant difference was found in morbidity between two groups[OR(random)0.88, 95% CI 0.51-1.51, P=0.64].

CONCLUSIONSelective staged resection is safe for synchronous liver metastasis from colorectal cancer.

Objective To observe and analyze the performance of forensic science in the cases of suxamethonium chloride poisoning,and to improve the identification of suxamethonium chloride poisoning.Methods Fifty-four cases of suxamethonium chloride poisoning were collected.The rules of determination of suxamethonium chloride poisoning were observed by the retrospective analysis of pathological and toxicological changes as well as case features.Results The pathological features of suxamethonium chloride poisoning were similar to the general changes of sudden death,which mainly included acute pulmonary congestion and edema,and partly showed myocardial disarray and fracture.Suxamethonium chloride could be detected in the heart blood of all cases and in skin tissue of part cases.Conclusion Suxamethonium chloride poisoning has the characteristics with fast death and covert means,which are difficult to rescue and easily miss inspection.For the cases of sudden death or suspicious death,determination of suxamethonium chloride should be taken as a routine detection index to prevent missing inspection.