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Molecular Pathogenesis of Gastric MALT Lymphoma, Against Which Helicobacter pylori Eradication Therapy is Ineffective Toshiaki Morito 1 , Yasuharu Satoh 1 , Katsuyoshi Takata 1 , Takehiro Tanaka 1 , Koichi Ichimura 1 , Tadashi Yoshino 1 1Department of Pathology, Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama University, Okayama, Japan Keyword: 胃MALTリンパ腫 , Helicobacter pylori , t(11;18)(q21;q21) , API2-MALT1 pp.1191-1197
Published Date 2007/7/25
DOI https://doi.org/10.11477/mf.1403101150
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 Most gastric mucosa-associated lymphoid tissue (MALT) lymphomas regress by eradication of Helicobacter pylori (H. pylori). A part of gastric MALT lymphoma is associated with t(11;18)(q21;q21), t(1;14)(p22;q32) or t(14;18)(q32;q21). Recently, the specific chromosomal abnormality of MALT lymphoma, t(11;18)(q21;q21) a nd API2-MALT1 fusion gene is widely recognized, and the gastric MALT lymphoma with this chromosomal abnormality is resistant to the eradication therapy. Today, gastric MALT lymphoma is classified into at least three subtypes, by the infection of H. pylori, and the chromosomal abnormalities. The key molecules to explain the pathogenesis of gastric MALT lymphoma which has API2-MALT1 are Bcl-10 and NF-κB. These findings suggest that the pathogenesis of this type of gastric MALT lymphoma is probably different from that of the classical type of MALT lymphoma due to H. pylori.


Copyright © 2007, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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