期刊
DIGESTIVE AND LIVER DISEASE
卷 39, 期 2, 页码 122-129出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.dld.2006.09.017
关键词
AMP-18; chronic gastritis; gastrokine-1; H. pylori; post-translational modification
Background. To understand the molecular changes underlying Helicobacter pylori-related gastric diseases is mandatory to prevent gastric cancer. Proteomic technology is providing a rapid expansion of the basic knowledge, particularly in the discovery of new biomarkers involved in the tumourigenesis. Aim. To characterise changes in protein expression level of the gastric mucosa in H. pylori-infected patients. Methods. The population enrolled comprised 41 dyspeptic patients. Proteins extracted from gastric mucosal specimens were analysed by 2-dimensional electrophoresis, sequenced by MALDI-TOF and identified by Edman's degradation. Results. Twenty-one out of 41 patients had H. pylori infection of whom 17 had anti-CagA IgG antibodies. Several proteins were identified, of which Rho guanosine diphosphatase dissociation inhibitor a and heat shock protein 27 increased and glutathione transferase and antrum mucosa protein- 18 decreased in H. pylori-positive in respect to H. pylori-negative patients. Interestingly, antrum mucosa protein- 18, currently referred as gastrokine-1, showed two isoforms differing in the first N-terminal amino acid residue. Both gastrokine-1 isoforms were observed in the H. pylori-negative group whereas a lower expression or even absence of the gastrokine-1 basic isoform was found in a subgroup (7/21) of H. pylori-positive patients with moderate-severe gastritis. Conclusion. Our study demonstrated the presence of gastrokine-1 isoforms of which the basic isoform was reduced in a subset of patients with H. pylori infection. (c) 2006 Editrice Gastroenterologica Italiana S.r.l. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据