Objective To evaluate the influence of the preparation-to-colonoscopy interval, diet control and excise on bowel preparation quality in the split-dose method for colonoscopy. Methods Observational study, prospective cohort study design, three bowel preparation methods were set up in different departments for A, B, C 3 groups, each group of 110 cases. In group A, no movement was required. Diet preparation was 3 days earlier than the examination, and take all the medicine in once at 20:00 the day before examination, group B, 1 L medicine required for 20 minutes movement, diet preparation was 1 day earlier than the examination, and take the medicine in twice the day before examination at 14:00, group C, keep walking during taking the medicine, diet preparation was 1 day earlier than the examination, and took all the medicine in once the day before examination at 20:00. The Boston Bowel Preparation Scale was used to evaluate the bowel cleansing quality. A questionnaire was administered to investigate patients′tolerability and safety. Results A total of 330 consecutive patients undergoing colonoscopy. There was no significance among three groups on bowel cleansing quality(P>0.05). However, the number ofexcellently cleanedwas higher in group B than the others, in group A,B and C respectively 30, 46, 29 cases, the difference was significant (χ2=7.627, P=0.022). Group B was superior to the others in terms of comfort, sleep quality, hunger, and discomfort, the difference was significant (χ2=19.425, 6.687 and 8.130, P < 0.01 or 0.05). Group B was also superior to the others in terms of the compliance of completing the preparation under the doctors′advice (χ2=14.756, P=0.001) and exercises (χ2=11.848, P=0.001). Conclusions The new method shortened the time of the diet control and set the exercises time to 20 minutes. So it was found to have a higher level of safety, bowel preparation quality and tolerability.

Objective To observe the effect of three immunosuppressive agents on the function of human adult islets of langerhans in vitro, and explore the suitable immunosuppressive protocols for human islet transplantation.Methods In vitro, the isolated and purified islets were incubated with the immunosuppressive agents (mycophenolic acid, sirolimus, and FTY720) at different concentrations for 24 h, then stimulated by glucose at low ((2.8) mmol/L) and high ((16.7) mmol/L) levels. The (insulin) release after stimulations was detected using ELISA kit, and stimulation index was calculated.(Results) In control group (no agents exposure), the insulin release were ((7.37)?(1.74)) ng/ml at low (level) and ((15.15)?(5.39)) ng/ml at high level respectively, with stimulation index achieved to (2.06)?(0.46). Compared to control group, treatment with mycophenolic acid led to dramatic reduction of (insulin) release (P

AIM: To investigate the effect of homocysteine(Hcy) on the apoptosis of endothelial cells (EC). METHODS: First-passaged human umbilical vein endothelial cells (hUVEC) were cultured with M199 containing 3 mmol/L Hcy. hUVEC apoptosis was detected as follow: demonstration of nuclear changes by Hoechst 33258 staining, agarose gel electrophoresis of DNA fragments, detection of apoptotic cells by flow cytometry following Annexin V-PI doubled stain, Western blot for P53 and Bax protein detection and colorimetry detecting caspase-3 activity. RESULTS: Compared with control, homocysteine induced characteristic apoptotic changes in hUVEC. The chromosomal DNA of hUVEC appeared “DNA ladder” by agarose gel electrophoresis. Apoptotic cells were increased significantly (P

External applies and washing of traditional Chinese medicine has sound curative effect in treating muscular and bone pain.The author reported some his experiences on the treatment of muscular and bone pain with hot applies and tendon-relaxing and collaterals-activating lotion.

AIM: To investigate the anti-HIV-1 activity of five anthraquinone derivatives (emodin,rhein,chrysophanol,physcion and aloe-emodin) in vitro.METHODS: Viral replication was estimated by observation of cytopathogenesis and measurement of HIV-1 p24 antigen production in HIV-1ⅢB acutely infected C8166 cells. The anti-HIV-1 activity was evaluated by the 50% effective concentrations (EC50) and selective indexes (SI) of these derivatives.RESULTS: These anthraquinone derivatives inhibited HIV-1ⅢB replication on syncytia formation induced by HIV-1ⅢB infection with EC50 mean values of (11.44±0.93)μmol/L (emodin),(51.28±2.86)μmol/L (rhein),(90.58±2.30)μmol/L (chrysophanol),(8.59±0.38)μmol/L (physcion) and (0.89±0.08)μmol/L (aloe-emodin),respectively. The p24 antigen production with EC50 mean values were (11.61±0.56)μmol/L (emodin),(12.35±4.73)μmol/L (rhein),(39.63±2.87)μmol/L (chrysophanol),>250 μmol/L (physcion) and (2.75±0.20)μmol/L (aloe-emodin) respectively. CONCLUSION: These structurally-related chemicals show different anti-HIV-1 activity in vitro. Among them,aloe-emodin is the most potent inhibitor to HIV-1 replication.

Objective To explore the effects of environmental enrichment (EE) on learning and memory ability and the expression of brain-derived neurotrophic factor (BDNF) and synaptophysin in hippocampus of neonatal rats with hypoxic-ischemic brain damage(HIBD).Methods Forty Wistar neonatal male rats aged 7 days were randomly divided into EE intervention for 6 hours(6 h EE) group (n =10),EE intervention for 12 hours (12 h EE) group (n =10),model group (n =10) and sham group (n =10).The first 3 groups were performed with HIBD.The 6 h EE and 12 h EE group received EE stimuli for 6 h and 12 h respectively,once a day for 14 days.Learning and memory of the rats were tested by using Morris water maze.The expression levels of BDNF and synaptophysin in hippocampus were determined with Western blot.Results The escape latency of all groups gradually reduced with the increase of training days,but there was no significant difference in the escape latency among the 4 groups (F =0.237,P ＞ 0.05).The rats in the 6 h EE group,12 h EE group and model group spent less time in the target quadrant and showed a significant reduction of BDNF and synaptophysin(6 h EE group:0.529 ± 0.038,0.889 ± 0.027;12 h EE group:0.660 ± 0.034,1.114 ± 0.037;model group:0.225 ± 0.015,0.672 ± 0.057) in the hippocampus compared with the sham group (0.803 ± 0.026,1.347 ± 0.092) (all P ＜ 0.01).In the 6 h EE group and 12 h EE group,the rats significantly increased the time spent in target quadrant and aggrandized the expression of BDNF and synaptophysin in hippocampus compared with the model group.Moreover,the 12 h EE group had a better performance than the 6 h EE group in the space exploration and the expression of BDNF and synaptophysin.Conclusion EE is helpful for improving learning and memory ability in neonatal rats with HIBD,which may be associated with up-regulating the expression of BDNF and synaptophysin in hippocampus.

Objective: To establish capillary zone electrophoresis method for determination of sildenafil citrate (Viagra) content in its troche. Methods： Using tetrandrine as internal standard(IS), the electrophoretic separation was achieved with 25 mmol/L borate (pH=7.89) running buffer. And a voltage of 14 kV was applied to the 40 cm×75 μm(i.d) capillary. The analytes were introduced into capillary by siphon (1 s) and determined with on-column monitoring at 214 nm. Results：The determination could be completed within 4 min and the minimum concentration of detection was 5 μg/ml.The analytical results of sildenafil citrate samples demonstrated a good linear relationship within the range of 24-480 μg/ml.The relative standard deviations (RSD) of intra-day was less than 1.58% and that of inter-day was less than 2.46%.The present recoveries were between 95%-105％. Conclusion：The CZE method is accurate, simple, rapid and reliable, so it can be applied to the determination of sildenafil citrate content.

Objective To investigate the role of interstitial collagenase in the pathogenesis of acute lung injury induced by hyperoxia outside of sealed cages and breath room air,and to study the mechanism of The severity of lung injury.Methods Seventy-two C57BL/6 mice were divided into normal control group,hyperoxia for 24 hours group,hyperoxia for 48 hours and hyperoxia for 72 hours group randomly,18 mice in each group.The hyperoxia group exposedin sealed cages with＞95%oxygen,and the control group were put in the inspiratory room.The expression of interstitial collagenase mRNA and protein in lung tissues was studied by reverse transcript-polymerase chain reaction(RT-PCR)and immunohistochemistry.Results Hyperoxia caused acute lung injury in mice.by The expression of interstitial collagenase mRNA in lung tissues was increased after 24 hours of hyperoxia compared with their control group[0.59±0.11 vs 0.07±0.01,q=3.t5 P＜0.01],the expression was higher at 72 hours of hyperoxia(0.68±0.12,q=3.78 P＜0.01).Immunohistochemistry study showed interstitial collagenase protein was mainly expressed in cytoplasm of airway epithelial cells,while Ⅱ type alveolar epithelial cells mainly and vascular smooth muscle cells in hyperoxia mice.The expression of interstitial collagenase protein in airway epithelium significantly increased at 24 hours of hyperoxia compared with their control group[(28.54±9.60) vs (13.48±4.32)q=2.62 P＜0.05],and the expression level was lower after 48 and 72 hours of hyperoxia(20.32±5.68) vs, (15.24±4.65).Conclusion Hyperoxia cause acute lung injury in mice;interstitial collagenase play an important role in the development of hyperoxia-induced lung injury in mice.

Objective To explore the diagnostic value of MR fast imaging sequences in fetal lung congenital cystic adenomatoid malformation(CCAM).Methods 8 cases with suspected CCAM by US were examined with MRI fast sequences,including single shot turbo spin echo (SSTSE)and balanced fast field echo(B-FFE),and undergone axial,sagital and coronal scanning sections of fetal chests.MRI findings were compared with surgery(2 fetuses),autopsy (3 fetuses)and CT examination (3 fetuses).Results 7 fetuses with CCAM and 1 fetus with bronchopulmonary sequestration(BPS)diagnosed by MRI were confirmed by following surgery,autopsy and CT examination.Among the 7 CCAM cases,2 leisions were on the left side,while the other 5 lesions were on the right side.Fur-thermore,2 cases were cystic type and the rest 5 cases were mass type.The BPS was located in the lower left lung lobar.Conclusion MR fast imaging sequences in fetal can clearly demonstrate location,type and extent of CCAM and can provide important supplement information of the prenatal fetal ultrasound examination.

Objective To realize fine management of medical equipment maintenance,effectively improve the efficiency and save the cost of equipment maintenance.Methods A medical equipment maintenance management module was developed with hospital resource planning system and SQL Server 2008 platform so as to implement informatized management for equipment acceptance check,maintenance,processing and etc.Results The module realized fine management,controlled cost and enhanced social and economic benefits of the hospital.Conclusion The module contributes to medical equipment maintenance management informatization,and is of great significance for the improvement of the hospital.