Objective Through transmission electron microscopy we observe the ultrastructure of optic nerve to evaluate the curative effect of optic nerve incision decompression (ONID) for incomplete injury to optic nerve. Methods The optic nerve was crushed for 30s to produce incomplete injury to the optic nerve in rats, and then the rats were divided into two groups. ONID was performed 6 hours after the injury in one group, and in the other group decompression was omitted(non-ONLD). Ultrastructure of optic nerve was observed 1 month, 2 months, 3 months and 6 months later in both groups. Results After 1 month denaturalization of myelin sheaths and axons of the injured optic nerve was severe in non- ONID group, and after 3 months the optic nerve entirely lost its normal structure. On the other hand, denaturalization of myelin sheaths and axons was evidently less intense in ONID group, and the changes in structure of optic nerve were stabilized. Conclusions ONID reduced the speed of degeneration of the injured optic nerve and postpones the process of axon denaturalization, thus protects the optic nerve from secondary injuries.

Objective To explore the characteristic and the rule of flash-visual evoked potentials (F-VEP) of SD rats after optic nerve injury in different grades. Methods By using APS-2000 multifunctional electric physiological instrument, changes in F-VEP were observed in normal optic nerve and injured optic nerve (crushed in 3 grades) in rats. The latency and amplitude of F-VEP wave, were recorded and statistically. Results The F-VEP wave was reliably displayed with characteristic curve. The L5b was(53.67?3.12)ms and A5 was(17.83?5.91)?v. The latency of F-VEP in rats with optic nerve injury in different grades showed a significant prolongation, and the amplitude showed a significant decrease compared with normal rats (P

ObjectiveTo study the effects and molecular mechanisms of Shuanglong Pill on angiogenesis of ischemic myocardium. Methods63 Wistar rats were ligated left anterior descending branch to be made into models of acute myocardial infarction(AMI).All rats were randomly divided into large-dosage group of Shuanglong Pill(LDG),small-dosage group of Shuanglong Pill(SDG),The control of acute MI(MIC).Other 11 rats were set as normal control(NC).Rats in every group had been treated half for 2 weeks and half for 4 weeks. New vessels' quantity in ischemic myocardium of acute MI rats were detected by immunohistochemistry double steps assay;the expressions of vessel endothelial growth factor(VEGF) and basic fibroblast growth factor(bFGF) on ischemic myocardium were detected by immunohistochemistry SP assay;the expressions of VEGF mRNA and bFGF mRNA on ischemic myocardium were detected by reverse transcription polymerase chain reaction(RT-PCR) assay.ResultsThere were more new capillaries on ischemic myocardium of LDG, SDG compared with that in MIC at every stage,moreover,there was significantly increase at the end of 4 weeks compared with that at 2 weeks.At the end of 2 weeks, the expression of VEGF in LDG were significantly elevated compared with that in MIC; and the expression of bFGF in LDG were significantly elevated compared with that in SDG and MIC.Whereas the expression of VEGF in LDG were significantly decreased at the end of 4 weeks compared with 2 weeks. There were significant differences of above comparison (P<0.05-0.01).At every stage the expression of VEGF mRNA in LDG, SDG were significantly elevated compared with that in MIC; but its expression was significantly decreased at the end of 4 weeks compared with that 2 weeks. The expression of bFGF mRNA was significantly elevated in LDC at the end of 2 weeks compared with that in other groups.ConclusionsShuanglong Pill could promote angiogenesis in ischemic myocardium,application of large dose of Shuanglong Pill could significantly upregulate the expression of VEGF, bFGF, VEGF mRNA and bFGF mRNA.

Objective To construct the DNA vaccine pIRES2-MLAA34-HSP70,and to detect its immune effect.Methods The acute monocytic leukemia associated antigen gene MLAA-34 and heat-shock protein (HSP)70 gene were extracted by using RT-PCR.The specific overlapping primer was designed,and the fusion gene MLAA34-HSP70 was amplified by using SOE-PCR technique.Then the DNA vaccine pIRES2-MLAA34-HSP70 was constructed,and BALB/c mice were immunized with this DNA vaccine.The splenic lymphocyte killing activity was detected by using MTT,levels of IL-2,IL-4 and IFN-γ were also detected by using ELISA.Results The MLAA34-HSP70 gene (2 956 bp) and the DNA vaccine pIRES2-MLAA34-HSP70 was amplified and constructed successfully.The killing efficiency of DNA vaccine pIRES2-MLAA34-HSP70 in U937 cells was significantly higher than that in other experimental groups and control group (P＜0.01),and levels of IL-4,IL-2 and IFN-γin DNA vaccine pIRES2-MLAA34-HSP70 group were significantly higher than those in the other experimental groups and control group (P＜0.01).Conclnsion The DNA vaccine pIRES2-MLAA34-HSP70 is constructed successfully.It is shown that the DNA vaccine induces strong humoral immunity,which could enhance immune responses to tumor cells and specificlly kill MLAA34 positive cells.

Objective To explore the effect of IFN-γ, IL-10 and IL-4 on B cell activating factor (BAFF) expression in human HL-60 cells, a kind of myeloid tumor cell lines, and its possible regulation mechanism. Methods Cultured human HL-60 cells were treated with IFN-γ, IL-10 and IL-4 for 1-3 days. The expression of membrane-bound BAFF on HL-60 cells was examined by flow cytometry, the amount of soluble BAFF was detected by ELISA assay, and the level of BAFF mRNA was tested by real-time PCR method. A functional 1021 bp fragment of the 5'-tlanking region of the human BAFF gene (-1349 to -329 bp) was cloned and investigated with serial 5'-deletion. The 5'-deleted promoters were recombinated with chloramphenicol acetyltransferase (CAT) as reporter gene. These five recombinant plasmids were transiently transfected to HL-60 cells with liposomal transfectian method. Promoters activities were determined by CAT reporter gene assay(CAT-ELISA) in those transfected cells treated with different cytokines. Results The results showed that the expression of membrane-bound BAFF, soluble BAFF and BAFF mRNA in human HL-60 cells were significantly elevated (P ＜ 0. 05) after incubated with IFN-γ and IL-10. In addition, IFN-γ and IL-10 showed significantly (P ＜ 0. 05) increased effects on promoter activity in human BAFF gane. And the cytokines-responsive sequences were located between -929 and -719 bp of the BAFF promoter region. Conclusion The enhancement of IFN-γ and IL-10 on BAFF expression and synthesis were regnla-ted by promoter activation. Our in vitro studies also raise the possibility to investigate the mechanisms regula-ting BAFF expression in other tumor cells of myeloid origin under pathological circumstances.

BACKGROUND: Left ventricular hypertrophy (LVH) is an important ring-joint of congestive heart failure (CHF). It is also considered to be independent risk factor of cardiovascular disease, so how to reverse or relieve LVH is valuable to cure CHF.OBJECTIVE: To observe the effect of Lujiao prescription on degree of LVH in patients with CHF.DESIGN: A random-control observation on CHF patients.SETTING: Department of Cardiovasology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine.PARTICIPANTS: A total of 20 patients with CHF were selected from the Special Clinic and Department of Cardiovasology in Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine from January 1996 to December 1998. All of them were consistent with the Framirham diagnostic criteria and following standardizations: ①above Ⅲ degree of cardiac functional grading by New York Heart Association (NYHA);②over 3 months case history;③accepted basic treatment of quantity sufficient diuretic and vasodilating agent excluding angiotensin converting enzyme inhibitor (ACEI);LVH was proved by echocardiogram or chest X-ray. They were informed of treatment items and consented.METHODS: According to random lot, the patients were divided into Lujiao prescription group and Digoxin group, each containing 10 patients.①Oral administrations of Lujiao prescription (35 mL, two times per day, produced by Shanghai Shuguang Hospital) and Digoxin (0.125-0.25 mg per tablet, batch number: 970757, once daily) were given in the corresponding groups, and the treatment duration was 3 months. After treatment, all the patients were detected in①NYHA cardiac functional grading; ②interventricular septal thickness (IVST) and posterior wall thickness (PWT) in diastolic phase through echocardiogram, myocardium weight of left ventricular by Devereux formula, left ventricular mass index (LVMI) corrected by bodysurface area, and degree of LVH;③the level of plasma angiotensin Ⅱ (Ang Ⅱ ) by radioactive immunoassay.MAIN OUTCOME MEASURES: NYHA cardiac functional grading, e-chocardiogram (IVST, PWT, LVMI, degree of LVH), the level of plasma Ang Ⅱ.RFSULTS: All 20 adopted patients entered the result analysis.①The classification of NYHA cardiac functional grading ( Ⅰ , Ⅱ ,Ⅲ,Ⅳ) were respectively 2, 5, 3, 0 case in Lujiao prescription group and 2, 4, 4, 0 case in Digoxin group after treatment, and difference was significant compared with those before treatment (0, 0, 7, 3, P ＜ 0.05).②IVST, PWT and LVMI of Lujiao prescription group were obviously decreased after treatment [(11.20±0.42), (12.10±0.32) mm, P ＜ 0.01; (10.60±0.84), (11.40±1.10) mm,P ＜ 0.01; (139.4±12.4), (155.3±15.4) g/m2, P ＜ 0.01], while those of the Digoxin group were untouched (P ＞ 0.05). The degree of LVH of Lujiao prescription group after treatment was obviously decreased [normal, mild,moderate, sever: 2, 6, 2, 0; 0, 3, 4, 3, P ＜ 0.01], while that of the Digoxin group was not obviously decreased (P ＞ 0.05).③)The level of plasma Ang Ⅱin the Lujiao prescription group was obviously decreased [(97.7±19.5),(144.0±18.5) ng/L, P ＜ 0.01], while that of the Digoxin group was not obviously increased (P ＞ 0.05).CONCLUSION: Lujiao prescription can reverse or relieve the degree of LVH in patients with CHF.

Objective To explore the effect of several cytokines, including interferon-γ, interleukin-10 and interlekin-4, on promoter activity of human BAFF (B-cell activating factor belonging to tumor necrosis factor family) gene. Methods A construct of phBAFF 1.02 containing sequence form -1349 bp to -329 bp of human BAFF gene, linking with chloramphenicol acetyltransferase (CAT) as reporter gene, was transiently transfected into human HL-60 cells, a kind of myeloid tumor cell lines. The cells were subsequently treated with IFN-γ, IL-10 and IL-4, and the CAT activity was assessed 24 hours after stimulation with each cytokines. Results IFN-γ of 5 ng/ml, IL-10 of 100 ng/ml could increase the CAT activity of phBAFF 1.02 to 4.18 and 2.13 folds respectively compared to the control. IL-4 at 100 ng/ml had no effect on promoter activity of human BAFF gene. Combination of IFN-γ, IL-10 and IL-4 could increase the CAT activity of phBAFF 1.02 to 3.41 and 1.58 folds respectively compared with controls. Conclusion IFN-γ and IL-10 can increase the promoter activity of human BAFF gene. IL-4 treatment can not affect the CAT activity driven by BAFF promoter. However, IL-4 can decrease the upregulating effect of IFN-γ and IL-10 on phBAFF1.02. These provide essential evidence for future study on the interaction mechanism of cytokines and BAFF in autoimmune diseases.

Objective:To summarize the main issues, analyze the causes and offer a strategy for AIDS preven-tion and control for all types of healthcare facilities in the health care system. Methods:184 leaders and experts of tertiary-level healthcare facilities ( provinces, cities and counties) from 30 provinces who had been engaged in AIDS prevention and control for more than five years were studied through a questionnaire including the issues and causes in AIDS prevention and control. Results: According to the results of the respondents and experts’ demonstration, the main issues were identified, including a lack of human resources in the system of disease control facilities, a lack of relevant agencies involved in AIDS response, the difficulty for AIDS patients to receive surgery and follow-up, poor detection of HIV, shortcomings in medical insurance, and so on. Conclusion: Based on the analysis of issues and causes, the paper offers strategic solutions: Clearly define the responsibilities of various health institutions in AIDS prevention and control;promote the participation of primary health institutions in AIDS prevention and control; im-prove the medical service system for AIDS patients;improve AIDS medical security policies;reform the management system of antiretroviral therapy drugs;and strengthen technical support from disease control facilities.

Objective To study the causes of emergency department (ED) overcrowding and access block in Beijing.Methods This was a multi-center cross sectional study.The studied cohort of patients included all ED visiting patients from 18 municipal teaching hospital EDs in Beijing from 2012 to 2013.Patient' s characteristics and medical care settings were analyzed.Results The urgent care cases accounted for only 4.6 ％ (71 224/1 554 387) of the emergency annual visits in 2012 and 5.5 ％ (88 190/1 615 571) in 2013.The total number of observation patients in EDs was 185 277 and 211 900 in 2012 and 2013 respectively,with an increase of 14.4 ％ (P ＜ 0.01).The total ED-admission inpatients only accounted for 2.97％ and 2.89 ％ of total annual visits in 2012 and 2013 respectively.The average time of ED-admission took 37.1 hours and 36.2 hours in 2012 and 2013 respectively.The average time of ED stay for observation was 4.9 days and 5.4 days in 2012 and 2013 respectively.Upper respiratory tract infection was the leading illness in annual visits.The leading cause of ED stay for observation was bedridden with pneumonia.Conclusions The ED settings in Beijing are different from other countries.The EDs actually assume the task of the clinic and ED service for 24 hours thereby made EDs terribly overcrowded.The main causes are large number of non-emergency patients visiting the ED and patients in the ED are difficulty to be hospitalized.Patients with end-stage disease and multiple organ failure stayed in the ED due to nursing home shortage.

Objective To investigate the efficacy and safety of modified endoscopic submucosal dissection (ESD) and rubber band ligation assisted endoscopic dissection for treatment of small gastric submucosal tumors (SMT) originating from the muscularis propria layer. Methods A total of ninety-two patients diagnosed as gastric SMT (6 mm≤diameter≤13 mm) originating from the muscularis propria layer by EUS in our hospital were enrolled in this study. With intravenous anesthesia and tracheal intubation in all patients, modified ESD was performed firstly to stripe the small tumors. After being exposed to a certain extent, the tumors were ligated by rubber band and snared for endoscopic dissection. The situation of bleeding, perforation in both intraoperative and postoperative, the integrity and size of the resected specimens were observed and recorded. The resected specimens were identified with histopathological detection and immunohistochemistry assay. At the 6-month and 12-month after the operation, all patients were reviewed by gastroscopy and EUS in our hospital. Results All the 92 tumors were resected completely and successfully. The mean operating time was (19.2±2.3) min and the mean blood loss in operation was (2.6±0.5) mL. Perforation after resection occurred in 3 cases, which were closed with metal hemostatic clips and nylon ropes. No delayed bleeding and perforation occurred in one week after the operation. The tumor sizes ranged from 6 mm × 5 mm to 13 mm × 12 mm. Seventy-three gastric stromal tumors (risk classification:all were very low risk), 18 gastric leiomyomas and 1 gastric neurofibroma were identified. There were no residue or recurrence in all cases during the 12-month follow-up period. Conclusion The modified ESD and rubber band ligation assisted endoscopic dissection are effective and safe for treatment of small gastric submucosal tumors originating from the muscularis propria layer. The tumors are resected completely and successfully, showing certain significance to assess the nature, degree of malignancy of the tumor and prognosis of the patients.