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世界核心医学期刊文摘（胃肠病学分册） 2006年第8期2卷 27-28页

作者： Mesenas S. Vu C. Doig L. meenan j. 陈瑜(译) 郑世成(校) 不详 Department of Gastroenterology College House St. Thomas' Hospital London SE1 7EH United Kingdom

Background: Diagnosing primary sclerosing cholangitis (PSC) is problematic and requires meeting a burden of proof through clinical, biochemical, radiologic, and histological features. Endoscopic ultrasound yields detailed images of the extrahepatic biliary tree, but its value in contributing to the diagnosis of this condition is unknown. Obj.ctives: To determine the potential for transduodenal EUS to detect common bile duct wall thickening in ***: A prospective, controlled study with retrospective, blinded data analysis. Setting: Single tertiary referral center for inflammatory bowel disease and EUS. Patients: Four groups of patients were assessed with radial endosonography: PSC (n = 9); inflammatory bowel disease (IBD) with abnormal liver blood tests (n = 21); choledocholithiasis (n = 15); and normal controls (n = 50). Measurements were made of the common bile duct diameter and wall thickness. Interventions: Transduodenal radial EUS of the biliary tree. Main Outcome Measurements: Common bile duct diameter and wall thickness. Results: The mean diameter (SD) of the common bile duct for the PSC, IBD, choledocholithiasis, and normal control groups measured 8.9 mm (2.8), 5.4 mm (1.7), 7.2 mm (2.2), and 5.0 mm (1.9), respectively (PSC and chole-docholithiasis groups compared to the IBD group, P 1.5 mm) of the common bile duct wall is seen in patients with PSC but not in those with aPPArently uncomplicated IBD or choledocholithiasis. The results of this study suggest that standard

关键词：超声内镜(EUS) 原发性硬化性胆管炎经十二指肠胆总管壁胆管树增厚肝外胆总管直径影像学检查管壁厚度

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Effect of Air Plasma Processing on the Adsorption Behaviour of Bovine Serum Albumin on Spin-Coated PMMA Surfaces

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j.urnal of Bionic Engineering 2008年第3期5卷 204-214页

作者： Chaozong Liu Brian j. meenan Advanced Materials and Biomaterials Research Centre School of Engineering The Robert Gordon University Aberdeen ABIO 1FR UK Northern ireland Bioengineering Centre University of Ulster Newtownabbey BT37 OQB Northern Ireland UK

This paper reports the adsorption of Bovine Serum Albumin （BSA） onto Dielectric Barrier Discharge （DBD） processed Poly（methyl methacrylate）（PMMA） surfaces by a Quartz Crystal Microbalance with Dissipation monitoring （QCM-D） technique. The purpose is to study the influence of DBD processing on the nature and scale of BSA adsorption on PMMA surface in vitro. It was observed that DBD processing improves the surface wettability of PMMA film, a fact attributable to the changes in surface chemistry and topography. Exposure of the PMMA to Phosphate Buffed Saline （PBS） solution in the QCM-D system resulted in surface adsorption which reaches an equilibrium after about 30 minutes for pristine PMMA, and 90 minutes for processed PMMA surface. Subsequent inj.ction of BSA in PBS indicated that the protein is immediately adsorbed onto the PMMA surface. It was revealed that adsorption behaviour of BSA on pristine PMMA differs from that on processed PMMA surface. A slower adsorption kinetics was observed for pristine PMMA surface, whilst a quick adsorption kinetics for processed PMMA. Moreover, the dissipation shift of protein adsorption suggested that BSA forms a more rigid structure on pristine PMMA surface that on processed surface. These data suggest that changes in wettability and attendant chemical properties and surface texture of the PMMA surface may play a significant role in BSA adsorption process.

关键词： in vitro test protein adsorption surface modification polymethylmethacrylate QCM-D

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