Novel risk markers for gastric cancer screening: Present status and future prospects

被引:14
|
作者
Enomoto, Shotaro [1 ]
Maekita, Takao [1 ]
Ohata, Hiroshi [1 ]
Yanaoka, Kimihiko [1 ]
Oka, Masashi [1 ]
Ichinose, Masao [1 ]
机构
[1] Wakayama Med Univ, Dept Internal Med 2, 811-1 Kimiidera, Wakayama 6410012, Japan
来源
WORLD JOURNAL OF GASTROINTESTINAL ENDOSCOPY | 2010年 / 2卷 / 12期
关键词
Gastric cancer; Screening; Risk; Pepsinogen; Helicobacter pylori; DNA methylation;
D O I
10.4253/wjge.v2.i12.381
中图分类号
R57 [消化系及腹部疾病];
学科分类号
摘要
Initial identification of populations at high risk of gastric cancer (GC) is important for endoscopic screening of GC. As serum pepsinogen (PG) test-positive subjects with progression of chronic atrophic gastritis (CAG) show a high likelihood of future cancer development, this population warrants careful follow-up observation as a high-risk GC group. By combining the PG test with Helicobacter pylori (HP) antibody titers, the HPrelated chronic gastritis stage can be classified, thus identifying not only a GC high-risk group but also a low-risk group. Among PG test-negative patients without CAG, those with high serum PG. levels and HP antibody titers are thought to have severe gastric mucosal inflammation and the risk of diffuse-type GC is also high. Meanwhile, in gastric mucosae obtained by en-do-scopic biopsy, HP infection induces aberrant DNA me-thy-lation in CpG islands in multiple gene regions and the extent of methylation clearly correlates with GC risk. By quantifying aberrant DNA methylation in suitable gene markers, we can determine the extent of the epigenetic field for cancerization. These novel concepts and risk markers will have many clinical applications in gastrointestinal endoscopy, including more efficient en-doscopic GC screening and a strategic approach to metachronous multiple GCs after endoscopic treatment. (C) 2010 Baishideng. All rights reserved.
引用
收藏
页码:381 / 387
页数:7
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