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Metabotropic glutamate receptor 4 expression in colorectal carcinoma and its prognostic significance

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dc.contributor.authorChang, Hee Jin-
dc.contributor.authorYoo, Byong Chul-
dc.contributor.authorLim, Seok-Byung-
dc.contributor.authorJeong, Seung-Yong-
dc.contributor.authorKim, Woo Ho-
dc.contributor.authorPark, Jae-Gahb-
dc.date.accessioned2009-11-09T06:19:31Z-
dc.date.available2009-11-09T06:19:31Z-
dc.date.issued2005-05-04-
dc.identifier.citationClin Cancer Res. 2005 May 1;11(9):3288-95en
dc.identifier.issn1078-0432 (Print)-
dc.identifier.urihttp://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=15867225-
dc.identifier.urihttp://hdl.handle.net/10371/11582-
dc.description.abstractPURPOSE: Metabotropic glutamate receptors (mGluR) play a variety of roles in both neuronal and nonneuronal cells. Recently, we reported that mGluR4 mediates 5-fluorouracil resistance in a human colon cancer cell line. In this study, we evaluated the nonneural expression of mGluR4 and clarified the existence of mGluR4 in normal colon epithelium and colorectal carcinomas. We also investigated the association of mGluR4 expression levels with various clinicopathologic parameters. EXPERIMENTAL DESIGN: mGluR4 expression was investigated in 21 normal and 312 malignant tissues from various organs using immunohistochemistry. In addition, 241 cases of colorectal carcinomas were examined and correlations between mGluR4 expression and various clinicopathologic parameters were then statistically analyzed. RESULTS: Expression of mGluR4 was identified in the normal epithelia of the upper respiratory tract, gastrointestinal tracts, breast, uterine cervix, urinary bladder, and skin, whereas it was not detected in the thyroid, lung alveoli, liver, testis, or prostate. In the corresponding malignant tissues, mGluR4 expression was frequently identified in colorectal carcinoma (68%), followed by malignant melanoma, laryngeal carcinoma, and breast carcinomas. Expression of mGluR4 was detected in 131 (54%) of 241 colorectal carcinomas and 12 (5%) cases among them showed overexpression in their cytoplasms. Loss of mGluR4 expression was negatively associated with tumor differentiation (P = 0.028), whereas overexpression of mGluR4 was positively associated with recurrence (P = 0.034) and poor disease-free survival (P = 0.017) in multivariate analyses. CONCLUSIONS: Our results suggest that mGluR4 signaling may play a role in colorectal carcinomas and that overexpression of mGluR4 is associated with poor prognosis.en
dc.language.isoen-
dc.publisherAmerican Association for Cancer Researchen
dc.subjectAminobutyric Acids/pharmacologyen
dc.subjectBlotting, Westernen
dc.subjectCell Line, Tumoren
dc.subjectCell Movement/drug effectsen
dc.subjectCell Proliferation/drug effectsen
dc.subjectColorectal Neoplasms/metabolism/*pathologyen
dc.subjectFemaleen
dc.subjectHumansen
dc.subjectImmunohistochemistryen
dc.subjectMaleen
dc.subjectPrognosisen
dc.subjectReceptors, Metabotropic Glutamate/agonists/antagonists &en
dc.subjectinhibitors/*biosynthesisen
dc.subjectSurvival Analysisen
dc.titleMetabotropic glutamate receptor 4 expression in colorectal carcinoma and its prognostic significanceen
dc.typeArticleen
dc.contributor.AlternativeAuthor장희진-
dc.contributor.AlternativeAuthor유병철-
dc.contributor.AlternativeAuthor임석병-
dc.contributor.AlternativeAuthor정성영-
dc.contributor.AlternativeAuthor김우호-
dc.contributor.AlternativeAuthor박재갑-
dc.identifier.doi10.1158/1078-0432.CCR-04-1912-
Appears in Collections:
College of Medicine/School of Medicine (의과대학/대학원)Surgery (외과학전공)Journal Papers (저널논문_외과학전공)
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