Importance of luminal membrane mesothelin expression in intraductal papillary mucinous neoplasms

Einama,Takahiro; Kamachi,Hirofumi; Nishihara,Hiroshi; Homma,Shigenori; Kanno,Hiromi; Ishikawa,Marin; Kawamata,Futoshi; Konishi,Yuji; Sato,Masanori; Tahara,Munenori; Okada,Kuniaki; Muraoka,Shunji; Kamiyama,Toshiya; Taketomi,Akinobu; Matsuno,Yoshihiro; Furukawa,Hiroyuki; Todo,Satoru

doi:10.3892/ol.2015.2969

April-2015 Volume 9 Issue 4

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April-2015 Volume 9 Issue 4

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Article Open Access

Importance of luminal membrane mesothelin expression in intraductal papillary mucinous neoplasms

Authors:
- Takahiro Einama
- Hirofumi Kamachi
- Hiroshi Nishihara
- Shigenori Homma
- Hiromi Kanno
- Marin Ishikawa
- Futoshi Kawamata
- Yuji Konishi
- Masanori Sato
- Munenori Tahara
- Kuniaki Okada
- Shunji Muraoka
- Toshiya Kamiyama
- Akinobu Taketomi
- Yoshihiro Matsuno
- Hiroyuki Furukawa
- Satoru Todo
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Affiliations: Department of General Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido 060‑8638, Japan, Department of Translational Pathology, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido 060‑8638, Japan, Department of General Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido 060‑8638, Japan, Department of Pathology, Laboratory of Cancer Research, Hokkaido University School of Medicine, Sapporo, Hokkaido 060‑8638, Japan, Department of Surgery, JA Sapporo Kosei Hospital, Sapporo, Hokkaido 060‑0033, Japan, Department of Pathology, JA Sapporo Kosei Hospital, Sapporo, Hokkaido 060‑0033, Japan, Department of Surgical Pathology, Hokkaido University Hospital, Sapporo, Hokkaido 060‑8638, Japan, Division of Gastroenterological and General Surgery, Asahikawa Medical University, Asahikawa, Hokkaido 078‑8510, Japan

Copyright: © Einama et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
Pages: 1583-1589
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Published online on: February 17, 2015

https://doi.org/10.3892/ol.2015.2969
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Abstract

The present study demonstrated that luminal membrane mesothelin expression is a reliable prognostic factor in gastric cancer. Intraductal papillary mucinous neoplasms (IPMNs) often exhibit a spectrum of dysplasia, ranging between adenoma and carcinoma. Therefore, an immunohistochemical analysis of mesothelin expression in IPMN was performed in the present study, focusing on the localization of mesothelin. IPMNs were classified into two groups, IPMNs associated with invasive carcinoma and low‑high (L‑H) grade dysplasias. The tumors were classified as mesothelin‑positive or ‑negative and in the mesothelin‑positive cases, the localization of mesothelin was evaluated as luminal membrane‑ or cytoplasmic‑positive. Among the 37 IPMNs, mesothelin expression was observed in 21 samples (56.8%), including 46.2% (12 out of 26) of the L‑H dysplasia and 81.8% (9 out of 11) of the invasive carcinoma samples (P=0.071). Luminal membrane localization was observed in 10 samples (27%), including 15.4% (4/26) of the L‑H dysplasia samples and 54.5% (6 out of 11) of the invasive carcinoma samples (P=0.022). Six patients experienced post‑operative recurrence, with five of the recurrent tumors exhibiting mesothelin expression and all six exhibiting luminal membrane localization. It was concluded that immunohistochemical examinations for mesothelin expression and localization are clinically useful for prognostic assessments and decision making regarding further treatment subsequent to surgical procedures in patients with IPMN.

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Journals

International Journal of Molecular Medicine

International Journal of Oncology

Molecular Medicine Reports

Oncology Reports

Experimental and Therapeutic Medicine

Oncology Letters

Biomedical Reports

Molecular and Clinical Oncology

World Academy of Sciences Journal

International Journal of Functional Nutrition

International Journal of Epigenetics

Medicine International

Importance of luminal membrane mesothelin expression in intraductal papillary mucinous neoplasms

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