Musashi-1 expression and clinicopathological significance in young gastric cancer patients: A matched case-control study

Choi,Ji Eun; Bae,Jun Sang; Lee,Ju Hyung; Jang,Kyu Yun; Chung,Myoung Ja; Moon,Woo Sung

doi:10.3892/ijo.2014.2263

Musashi-1 expression and clinicopathological significance in young gastric cancer patients: A matched case-control study

Authors:
- Ji Eun Choi
- Jun Sang Bae
- Ju Hyung Lee
- Kyu Yun Jang
- Myoung Ja Chung
- Woo Sung Moon
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Affiliations: Department of Pathology, Chonbuk National University, Medical School, Research Institute of Clinical Medicine of Chonbuk National University Hospital and Research Institute for Endocrine Sciences, Jeonju 561-756, Republic of Korea, Preventive Medicine, Chonbuk National University, Medical School, Research Institute of Clinical Medicine of Chonbuk National University Hospital and Research Institute for Endocrine Sciences, Jeonju 561-756, Republic of Korea
Published online on: January 21, 2014 https://doi.org/10.3892/ijo.2014.2263
Pages: 1185-1192

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Abstract

Musashi-1 (Msi-1) is proposed to be a marker of progenitor cells in the human gastric mucosa. We examined Msi-1 expression and localization in surgical specimens of gastric cancer in young patients using immunohistochemistry and tested associations of Msi-1 expression with clinicopathological features. Patients (n=611) with gastric cancer who underwent radical gastrectomy were included in the present study. To minimize confounding effects, we matched 26 gastric cancer patients 30 years of age or younger (age ≤30) with 26 patients 60 years of age or older (age ≥60). The groups were matched by gender, tumor histological type and tumor stage. Gastric cancer in the younger patients was significantly associated with female gender and with diffuse histological type, compared with 585 gastric cancer patients older than 31 years. Msi-1 expression was more frequently upregulated in gastric cancer in young patients than in patients older than 60 years. Msi-1 expression was significantly associated with diffuse histological type, depth of tumor invasion, lymph node metastasis and tumor stage in the 26 young patients with gastric cancer. Univariate Kaplan‑Meier survival analysis identified Msi-1 expression as a significantly negative factor in the survival of young gastric cancer patients. However, Msi-1 expression was not significantly associated with survival in the 26 matched older patients. According to mucin phenotype, the gastric foveolar type predominated in Msi-1-positive gastric cancers. Our principal findings included a significantly higher level of Msi-1 expression in younger gastric cancer patients compared to older ones, and a probable association of tumor Msi-1 expression in young gastric cancer patients with more aggressive tumor type.

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