Objective: To research the comparability of water vapor transmission of laminated films for pharmaceutical packaging determined by different instruments, methods and experimental conditions to provide reference and advice for the related inspection personnel.Methods: The principle, test parameters, conditions and scope of application for the testing methods for water vapor transmission in the national standard (GB) and international standards (ISO, ASTM) were compared by using three kinds of instruments based on different testing principles.Results: Different temperature and humidity conditions had great influence on the results of the same instrument.Under the same temperature and humidity, the instrument with different principles had little influence on the test results.Conclusion: Testing personnel should regularly use the standard membrane to calibrate the instrument of the sensor method.The temperature and humidity should be strictly controlled during the test.They should take measurement accuracy, personnel operation and economic loss into consideration to select the suitable method.

Objective Proliferative cholangitis (PC) is responsible for stone recurrence and biliary restenosis, this study was to investigate the and-proliferative effect of CDC2 kinase shRNA on PC. Methods The common bile duct of PC rat model was given an intralumenal administration of 0. 5 ml of CDC2 kinase shRNA. Results CDC2 kinase shRNA treatment effectively inhibited the expression of CDC2 kinase,PCNA, and procollagen I , resulting in the inhibition of hyperplasia of biliary epithelium, submucosal gland, and collagen fibers. Also, the lithogenic potentiality of PC decreased due to the inhibition of endogenous β-glucuronidase secretion. Conclusion The anti-proliferative effect of CDC2 kinase shRNA on PC may prevent biliary restenosis and stone recurrence.

Objective To investigate the feasibility, effect and mechanism of chemical bile duct embolization for chemical hepatectomy. Methods Phenol or absolute ethanol plus cyanonacrylate were employed as embolization agents. Histology, Fas and TGF-? 1 measurement were used to evaluate the result. Results Phenol plus cyanonacrylate effectively destroyed and embolized intrahepatic biliary duct, leading to complete disappearance of hepatocytes in the periphery of embolization lobe and thereby achieving the effect of chemical hepatectomy. Expression of Fas and TGF-? 1 in phenol embolism group (88.90?38.10, 185.22?70.39) and ethanol embolism group (72.39?29.51, 163.56?51.75) were higher than those in biliary duct ligated group (26.31?12.07, 74.84?40.73) ( P