Biliary atresia(BA) is a destructive inflammatory obliterative cholangiopathy of neonates affecting both intrahepatic and extrahepatic bile ducts.BA is more common in east Asia.Genetic susceptibility,viral infections,and immune dysregulation may be related to BA,but immune dysregulation may play a key hole in the pathogenesis of BA.A current view of the pathogenesis of BA is that it may involve both a primary perinatal hepatobiliary viral infection and a secondary generation of an autoimmune-mediated bile duct epithelial injury.The etiology of BA is unknown,but there is evidence for the involvement of immunologic dysregulation mechanisms,which will be discussed in this review.

As a regular mental disease,Hypochondriasis more takes place on medical students.It affects seriously the undergraduates both physically and mentally,and disturbs their life and studies.If proper enlightenment and treatment are not given to the students,hypochondriasis may possibly evolve to neuropathy and psychoses,leading to the prolonged and refractory diseases.Therefore by psychoanalyzing medical students' hypochondriasis and discussing how to prevent its occurrence,we put forward that it is important to build the students' psychological character and personality characteristics in cultivating the students' clinical thinking ways and basic practice ability.

Objective To evaluate the clinical value of combined detection of serum CEA, CA125,CA153 and CA199 in lung cancer diagnostec. Methods The serum level of CEA,CA125,CA153 and CA199 in 58 patients with lung cancer,38 patients with benign lung diseases and 40 healthy persons were determinated by Chemiluminesent immunoassay. The data were analyzed to evaluate the diagnostic value of the combination use of four markers. Results The serum levels of CEA,CA125,CA153 and CA199 in lung cancer group were 5.6 (1.0-619. 0) μg/L,124. 5 (5.3 - 994. 8) U/ml,14.4(3. 1 - 800. 0) U/ml and 21.8(2.0 - 1200.0) U/ml respectively ;The serum levels of CEA, CA125, CA153 and CA199 in benign lung diseases were 1.9 (0. 6 -14.4) μg/L, 17. 7 ( 1.8 - 303.6 ) U/ml, 6. 8 ( 2. 4 - 20. 1 ) U/ml and 9. 3 ( 2. 0 - 82. 6 ) U/ml respectively. The serum levels of CEA, CA125, CA153 and CA 199 in healthy controls were 1.4 (0. 6 - 5.0 ) μg/L, 9.6 (4. 4 -36. 5 ) U/ml,6. 6 (3.8 - 19. 9) U/ml and 6. 4 (2.0 - 58. 1 ) U/ml respectively. The levels of markers in the lung cancer group were significantly higher than those in patients with benign lung disease and healthy controllers (Ps ＜ 0. 01 ). The sensitivity of combined measurement was 94. 8%, significantly higher than a single measurement ( CEA 48. 3% ,CA125 75.9% ,CA153 20.7% ,CA199 31.0% ,Ps ＜0. 01 ). Conclusion The combined detection of CEA, CA125, CA153 and CA199 can significantly improve detection sensitivity of lung cancer and might provide valuable laboratory proof for early diagnosis of lung cancer.

Objective To study the interaction between human microRNA ( miRNA) and 5′trailer regions of Ebola virus genome from the perspective of bioinformatics so as to facilitate prevention and treatment of Ebola virus .Method The miRNA target prediction software Pita and RNAhybrid were used to predict the human miRNAs which could bind the 5′trailer regions of Ebola virus genomes before the miRNAs were annotated by g:Profiler web server .Results and Conclusion There may be complex interactions between human miRNAs and the 5′trailer regions of Ebola virus .Previous reports about the interaction between host miRNA and 5′trailer region of virus genome suggest that the interaction between human miRNA and 5′trailer region of Ebola virus may have effect on replication of Ebola virus and human cells .This work may provide new ideas on prevention and treatment of Ebola virus .

Objective To investigate the effect of transforming growth factor-?1 (TGF-?1) on cell cycle,cell proliferation,and invasive capacity of human colon cancer cells of the line SW480,for its role in colon carcinogenesis and development,as well as its application in gene therapy for colon cancer with RNA interference.Methods The recombinant expressing plasmids pEGFP-N1-TGF-?1 was constructed and transfected into SW480 cells by Lipofectamine 2000.The expression of TGF-?1 mRNA and protein in the transfected SW480 cells were detected by fluorescent microscopy,RT-PCR and Western blot analysis respectively.The cell proliferation of SW480 cells was tested by MTT assay,the cell cycle was analyzed by flow cytometry,and the invasion ability of SW480 cells were investigated by Transwell-matrigel invasion chambers.Results After transfected into SW480 cells,both the mRNA and protein levels of TGF-?1 were effectively increased (P

Objective To study the clinical significance of cryoanalgesia of intercostals nerves for relieving the chest pain and the stress after thoracotomy. Methods 166 patients undergone post-lateral thoracotomy were enrolled for study, including 107 cases of cryoanalgesia of intercostals nerves as cryo-group and 59 cases of non-cryoanalgesia as control group. The patients who had exploratory thoracotomy were excluded. The visual analogue scales (VAS), dosage of dolantin as well as the plasma levels of cortisol and ?-endorphin, and the complications after operation between the two groups were compared and analyzed. Results After operation, the VAS of cryo-group was much lower than that of control group for 7 days, so did the dosage of dolantin during the first 3 days. The complications in the control group were much more than that in the cryo-group who had lower levels of cortisol and ?-endorphin in plasma. Conclusion Cryoanalgesia of intercostals nerves was proved to be a simple, inexpensive, safe form for relieving post-thoracotomy pain. It could not only dramatically relieve the pain and stress level, but also reduce the risk of complications especially in elderly patients.

The setting up of morphologic experimental centre has brougt experimental methods and means to a higher level. However, it is worth considering how to share the resource furthest,and how to exert experimental technicians’ efforts. This article intends to discuss those problems.

Objective　To investigate the relationship between the apnea events and the correspondent sleep stage. Methods 68 normal volunteers were studied with polysomnography to confirm the sleep stage of the apnea events. Results Sleep apnea events were found in each different sleep stage. The events happened frequently in light sleep stage, most in stage 2. There were no significant sleep stage distribution difference in different sex .The number and severity of apnea events were also not relative with the sleep stage distribution. Conclusion Apnea events happened most frequently in light sleep stage. The reason is still unclear.

Objective To assess the sanitary quality of finished water produced by seawater desalination plant.Methods Using reverse osmosis for seawater desalination,the microbiological indexes,the levels of chloride and the pH values of finished water after seawater desalination were determined and then were assessed based on the National Method for Determination of Drinking Water(GB 5750-1985).Results After seawater desalination,the level of fluoride in finished water was 426 mg/L,the total count of bacteria of 3 finished water samples among 9 samples exceeded the standedard(350,300,4016/L),the pH valuer were qualified on the whole,except one lower value of 5.74 and a higher value of 8.94.Conclusicn After the treatment by seawater desalination system,the level of residual chloride in finished water was higher which approached the related highest limit ruled by National Sanitary Standard for Drinking Water,the microbiological indexes and pH values of finished water were unstable.

1 000 rnl were randomly divided into 2 groups : AHHD group ( n = 18) and control group ( n = 18). The patients were premedicated with intramuscular atropine 0.007-0.01 mg?kg-1 . Radial artery and right internal jugular vein were cannulated before induction of anesthesia for MAP and CVP monitoring, blood sampling and fluid administration. Anesthesia was induced with TCI of propofol. The target plasma propofol concentration was set at 3 ?g ? ml -1 . When the patients lost consciousness, fentanyl 2 ?g ? kg-1 was given intravenous and tracheal intubation was facilitated by vecuronium 0.1 mg? kg-1 , 10min after intubation additional fentanyl 2 ?g? kg-1 and vecuronium 0.08 mg? kg-1 were given. In AHHD group lactated Ringer's solution 10 ml ? kg-1 was infused over 30 min before TCI propofol was started. 10 min after start of TCI propofol 6% HES 20 ml? kg-1 was infused within 30 min. In control group the patients received only lactated Ringer's solution 10 ml?kg-1 . TCI of propofol was maintained for 1 h. Arterial blood samples were taken before and 2, 5, 10, 20, 30, 40, 50 and 60 min after TCI propofol was started, and at 2.5, 5, 10, 15, 20, 25, 30 min after termination of TCI propofol for determination of blood concentration of propofol by gas-chromatography - mass spectrometry (GC-MS) . The TCI system comprising Graseby 3 500 infusion pump controlled by Stelpump 1.07 software which included Tackley pharmacokinetic parameters. Results In AHHD group Hb was reduced from initial (130? 14)g?L-1 to (90? 15)g?L-1 and Hct from initial 38% ? 3% to 26% ? 4 % at the end of AHHD. The measured blood propofol concentrations were significantly lower in AHHD group than those in control group at the corresponding time points (P