{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,30]],"date-time":"2025-10-30T22:38:53Z","timestamp":1761863933033},"reference-count":32,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2019,2,6]],"date-time":"2019-02-06T00:00:00Z","timestamp":1549411200000},"content-version":"vor","delay-in-days":5,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Pathology International"],"published-print":{"date-parts":[[2019,2]]},"abstract":"<jats:sec><jats:label \/><jats:p>Bile duct cancer is known to contain numerous fibroblasts, and reported to recruit cancer\u2010 associated fibroblasts by secreting platelet\u2010derived growth factor\u2010D (PDGF\u2010D) which needs serine proteases, such as matriptase, to behave as a ligand. However, their expression pattern, and prognostic value have not been clarified. In this study, we investigated the clinicopathological significance of PDGF\u2010D and matriptase expression in patients with extrahepatic bile duct cancer. The samples were obtained from 256 patients who underwent the surgical resection between 1991 and 2015, and the expression levels of PDGF\u2010D and matriptase were evaluated immunohistochemically. Staining intensities and distribution were scored, and finally classified into low and high expression groups in cancer cells and stroma respectively. High expression of matriptase in the cancer stroma was detected in 91 tumors (40%). The high stromal matriptase expression was significantly associated with shorter recurrence\u2010free survival (RFS) and overall survival (OS) (<jats:italic>P\u2009<\/jats:italic>=\u20090.0027 and 0.0023, respectively). Multivariate analyses also demonstrated that the stromal matriptase expression level was an independent influential factor in RFS (<jats:italic>P\u2009<\/jats:italic>=\u20090.0050) and OS (<jats:italic>P\u2009<\/jats:italic>=\u20090.0093). Our findings suggest that the high stromal matriptase expression was strongly associated with tumor progression, recurrence and poor outcomes in patients with extrahepatic bile duct cancer.<\/jats:p><\/jats:sec>","DOI":"10.1111\/pin.12769","type":"journal-article","created":{"date-parts":[[2019,2,7]],"date-time":"2019-02-07T06:24:22Z","timestamp":1549520662000},"page":"86-93","update-policy":"http:\/\/dx.doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Overexpression of matriptase in tumor stroma is a poor prognostic indicator of extrahepatic bile duct cancer"],"prefix":"10.1111","volume":"69","author":[{"given":"Toshihide","family":"Komatsubara","sequence":"first","affiliation":[{"name":"Department of Pathology Jichi Medical University 3311\u20101 Yakushiji Shimotsuke\u2010shi Tochigi\u2010ken Japan 329\u20100498"},{"name":"Department of Surgery Jichi Medical University 3311\u20101 Yakushiji Shimotsuke\u2010shi Tochigi\u2010ken Japan 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