Given the rapid progress in recent years,hospital ethics review remains a weak link.This study started from the nature and role of the hospital ethics committee to probe into setbacks found in hospital ethics review practice.Viewpoints in the paper covered the access system,review system,training system,and the conflicts of interest between researchers and subjects,in an effort to further improve the quality of ethic review,and to better protect the rights and interests of subjects.

Objective To find out the changes of the soft tissue profile in Guangdong women with Angle's I teeth uncovered by lips after extraction of 4 first bicuspid teeth and to evaluate its significance. Methods Fifteen cases of adult Guangdong women with Angle's I teeth uncovered by lips were enrolled in this retrospective study. The X-ray film of lateral cephalometry was used to analyze the soft tissue profile in pre- and post- corrective tooth extraction. The paired t-test was statistically applied for comparison between the changes of lip tissue in pre- and post- correction. Results The changes occurred obviously in the angles of nose vs. lip and upper vs. lower lips, angle Z, and the length, thickness, esthetical plane distance and convex distance of upper and lower lips, but not in the angles of face and facial convex, basic angle of upper vs. lower lips and chin thickness. Conclusilons The facial dislocation and figure of these women have been positively improved after extraction of 4 first bicuspid teeth in spite of the larger thickness of lips than before correction, the just partly shortened distance between lips and the upper and front teeth still exposed and uncovered by lips to some extent. Further improvement depends on functional exercise of lip muscles.

Frogs were caught from 4 towns in Huaxi of Guiyang and dissected.The collected spargana were used to infect young dogs for species identification.Results showed that the wild frogs were identified as Rana nigromaculata, and the infection rate was 16%(131/818) with an average intensity infection of 3.44 per frog, The tapeworm obtained from an infected dog was specified as Spirometra mansoni.

Objective To investigate the potential of substrate elasticity in regulating rapid differentiation of HepaRG cells into hepatocyte-like cells ,and further provide hepatocytes for bioartificial liver. Methods The substrate elasticity was divided into 4 groups. The expressions of albumin(ALB)were detected by albumin-green fluorescent protein-reporter system (ALB-GFP-reporter system) and Image J software;the cell morphology was observed by microscope and the amounts of cell were detected by cell Titer-Blue cell viability assay kit (alamar blue). Results The results of ALB showed that at the 4th hour,the expressions of ALB inside the HepaRG cells between 4s group and 8s group,16 s group and Glass group were not statistically different (t = 0.791,1.389, 2.481,P>0.05);at the 4th day,the expressions of 4s group had statistical differences in comparison with those of 16s group and Glass group(t = 12.41,12.52,P < 0.05),but not statistical difference when compared with those of 8s group(t = 2.603,P > 0.05);at the 7th day,the expressions of 4s group were statistically different from those of 8s group,16s group and Glass group(t=3.266,6.725,8.005,P<0.05). The microscope showed that only a typical epithelial morphology was observed before differentiation ,then hepatocyte-like cells and bile duct-like cell were observed at differentiated phases. The alamar blue showed that at the 4th and the 7th day,the cell number of 4s group were not statistically different from that of 8s group,16s group and Glass group(P >0.05). Conclusion Soft substrate can promote differentiation of HepaRG cells.

Objective:To study the effect of Longman Ampelopsis grossedentata on the level of serum lipid. Methods:The exper-imental rats were given high-fat diet during the experiment. The rats were randomly divided into the model group, high dose group (37. 80 g·kg-1), medium dose group (12. 60 g·kg-1), low dose group (6. 30 g·kg-1) and lipid-lowering drug group (180 mg· kg-1 ) . All the groups were administrated continuously for 30 days, and the effect on body weight, serum TC, TG and HDL-C were measured. Results:Compared with that of the model group, the increase of body weight in the other groups was not significant ( P>0. 05), and all the rats had no obvious poisoning symptom. TC and TG were higher after the high-fat diet administration than those be-fore the experiment in the model group, and the differences were statistically significant (P<0. 05). After the 30-day treatment, the levels of TC and TG in the high-dose group were significantly decreased compared with those of the model group (P<0. 05). Conclu-sion:Longman Ampelopsis grossedentata shows assistant therapeutic effect on serum lipid.

Objective To analyze the malaria epidemiological characteristics in Tengchong City from 2010 to 2015,so as to provide the evidence for adjusting and formulating measures in the elimination stage. Methods The malaria data were collected and analyzed by using Microsoft Excel 2010 in Tengchong City from 2010 to 2015. Results There were 1 408 malaria cases re?ported in Tengchong City from 2010 to 2015,including 1 091 cases of Plasmodium vivax infection,256 cases of P. falciparum infection,5 cases of P. malariae infection,1 case of P. ovale infection,1 case of mixed infections,and 54 unclassified cases. Totally 1 390 imported cases were recorded and 98.06%of them(1 363/1 390)were imported from Myanmar. Most of the pa?tients(n=908)were aged from 21 to 40 years,and the male to female ratio was 11.03∶1. The highest?risk populations were farmers and migrant workers. The most cases were observed in April and June,and at that time,most of the floating workers re?turned. Conclusion Imported malaria is severe in Tengchong City,and there is a great challenge to malaria elimination.

BACKGROUND:At present,experimental animal models of primate idiopathic scoliosis with erect feet have not been established.With rapid development of computer and imaging,we can use computer software to simulate models of human idiopathic scoliosis,and do relevant biomechanical analysis and provide instructions for clinical surgery operation.OBJECTIVE:To research the best surgical fusion level for the adolescent idiopathic scoliosis (AIS) of PUMC Ⅱ d_2 with the finite element model (FEM).DESIGN,TIME AND SETTING:The compadson observation was performed at the Department of Orthopedics,Beijing Union Hospital from May 2007 to May 2008.PARTICIPANTS:One female patient with PUMC Ⅱ d_2 scoliosis (double curve malformation) was included.METHODS:FEM (T5-S) of PUMC Ⅱ d_2 idiopathic scoliosis was used to simulate upper thoracic curve,lower lumbar curve and double curve fusion manners.Hollow lateral curvature pedicle of vertebral arch received 50,100,150 N load.Displacement of T_5 and T_(11) on upper sagittal plane (displacement of Z axis positive value on upper sagittal plane,displacement of negative value on lower sagittal plane) and their difference value were compared.T_5 displacement represented outcomes of double curve orthopaedics.T_(11) displacement represented outcomes of lower lumbar curve orthopaedics.Their difference value (T5-T11) represented outcomes of upper thoracic curve orthopaedics.MAIN OUTCOME MEASURES:Different fusion segments and displacement of T_5 and T_(11) under different orthopedic forces were measured.RESULTS:In PUMC Ⅱ d_2 lateral curvature,T_5 displacement on Z axis:fusion displacement of double curves was greater compared with upper curve alone or lower curve alone (P < 0.01 ).Difference of T_5-T_(11) displacement:double curves orthopaedics > upper thoracic curve orthopaedics alone > lower lumbar curve orthopaedics alone (P < 0.01).Displacement of T_(11) on Z axis:double curves orthopaedics > lower lumbar curve orthopaedics alone > upper thoracic curve orthopaedics alone (P < 0.01).CONCLUSION:Fusing two curves would get the best effect on the AIS of PUMC Ⅱ d_2 compared with upper curve alone or lower curve fusion alone.Effects of 3 kinds of load on correction of upper thoracic curve:double curve orthopaedics < upper thoracic curve orthopaedics alone > lower lumbar curve orthopaedics alone.Effect of 3 kinds of load on correction of lower lumbar curve orthopaedics alone:double curve orthopaedics > lower lumbar curve orthopaedics alone > upper thoracic curve orthopaedics alone.Three-dimensional finite element analysis is an effective method to analyze biomechanics of scoliosis deformity correction and provides a virtual non-invasive verification manner,and can optimize surgery scheme.

Objective To investigate the expressions of PI3K, AKT and MRP protein in pancreatic carcinoma and to determine the clinicopathological significance and the correlation among three protein expressions. Methods The immunohistochemical method was used to detect the expressions of PI3K, AKT and MRP in forty three pancreatic carcinoma, nine chronic pancreatitis and eight normal pancreatic tissue samples. Results The positive expression rates of PI3K, AKT and MRP were 46.51%, 55.81% and 39.53%, respectively in pancreatic carcinoma, which were remarkably higher than those in normal pancreatic tissue and in chronic pancreatitis (P<0.01 and P<0.05, respectively). The aberrant expression of PI3K, AKT and MRP were associated with lymph node metastasis and TNM stages (P<0.05). The abnormal expression rate in both MRP and PI3K was 32.56%, the normal expression rate of both MRP and PI3K was 46.51%, and there was positive correlation between the expression of MRP and PI3K(r=0.581, P<0.01). The abnormal expression rate of both MRP and AKT was 32.56%, the normal expression rate was 37.21%, and there was a positive correlation between MRP and PI3K (r=0.432,P<0.05). The abnormal expression rate of both MRP and PI3K was 37.21%, the normal expression rate of both MRP and PI3K was 32.56%, there was also a positive correlation between MRP and PI3K (r=0.306,P<0.05). Conclusions The expressions of PI3K, AKT and MRP were up-regulated in pancreatic carcinoma. The expressions of PI3K and AKT may be related to the lymph node metastasis and TNM staging.

Objective To investigate cell-killing and bystander effects on gallbladder cancer (GBC-SD) cells transferred with double suicide genes (CD and HSV-tk). Methods CD and HSV-tk genes were transfected into PA317 cells using lipofectamine. GBC-SD cells were infected with viral supernatant. GBC-SD/CD+tk cells were treated with 5-FC and/or GCV. GBC-SD/CD+tk and GBC-SD were inoculated subcutaneously into the nude mice respectively and treated with GCV and 5-FC for 21 days. Results The killing effect of 5-FC and GCV in combination on GBC-SD/CD+tk cells is more effective than using 5-FC or GCV alone. The local bystander effect is significant while the distant bystander effect was not obvious. Conclusion The cell-killing efficacy of chemotherapy on GBC-SD transfected with double suicide gene was significantly increased, and the bystander effect was obvious.

Objective To observe prospectively the role of endoscopic diagnosis and treatment of biliary leakages in patients with liver transplantation, and the incidence of bile duct stricture after healing of the leakage. Methods Six eases of T-tube leakage and seven cases of anastomosis leakage complicating liver transplantation were enrolled in this prospective study. Six patients treated by endoscopic plastic stent placement , 2 by naso-biliary catheter drainage, 2 by papillosphincterotomy and 3 by naso-biliary catheter drainage combined with plastic stent placement. Some patients received growth hormone treatment. Results The bile leak resolution time was between 10-35 days in 10 patients with complete document. The median time of leak resolution was 15. 3 days. Four cases of anastomosis stricture, three cases of common hepatic duct and one ease of multiple bile duct stenosis were observed by followed-up nasobiliary catheter cholangiography or ER-CP. Conclusion Endoscopic nasobiliary catheter or plastic stent placement is a safe and effective treatment for bile duct stricture occurred after bile leak resolution in most of liver transplantation patients. Naso-biliary catheter combined with plastic stent placement maybe the best choice for treating bile leak, because, theoretically, it may prevent serious condition happened at accidental nasobiliary catheter dislocation, and it may have prophylactic effect on upcoming bile duct stricture and should be further confirmed.