title: Correlation of GLUT-1 overexpression, tumor size, and depth of invasion with 18F-2-fluoro-2-deoxy-D-glucose uptake by positron emission tomography in colorectal cancer.
abstract: We investigated the wide variability of 18F-2-fluoro-2-deoxy-D: -glucose (FDG) uptake, semiquantified as standardized uptake value (SUV), in positron emission tomography (PET) scanning, in 20 patients with colorectal cancer (CRC), including 1 with synchronous hepatic metastasis. The sensitivity of PET in CRC diagnosis was 100%, with a mean SUV of 8.0 (3.1-11.9). Tumor size and depth of invasion were associated with higher SUVs (P=.0004, .042, respectively). Strong glucose transporter-1 (GLUT-1) expression had significantly positive correlation with the SUV (r=.619, P=.003). GLUT-1 expression revealed positive staining in 17 (85%) of the 20 primary lesions. The central part of the tumor, thought to be relatively hypoxic, had stronger GLUT-1 expression and a higher SUV than the periphery, in both the primary tumor and hepatic metastatic foci. Our data suggest that the SUVs of FDG uptake in PET may be a noninvasive biomarker for advanced CRC, indicative of a large hypoxic tumor with deep invasion.
authors.affiliation: Department of Surgery and Clinical Oncology, Graduate School of Medicine, Osaka University, 2-2 Yamada-oka, Suita-City, Osaka, 565-0871, Japan.
authors.forename: Jinyu
authors.initials: J
authors.lastname: Gu
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Yamamoto
authors.forename: Hiroki
authors.initials: H
authors.lastname: Fukunaga
authors.forename: Katsuki
authors.initials: K
authors.lastname: Danno
authors.forename: Ichiro
authors.initials: I
authors.lastname: Takemasa
authors.forename: Masataka
authors.initials: M
authors.lastname: Ikeda
authors.forename: Mitsuaki
authors.initials: M
authors.lastname: Tatsumi
authors.forename: Mitsugu
authors.initials: M
authors.lastname: Sekimoto
authors.forename: Jun
authors.initials: J
authors.lastname: Hatazawa
authors.forename: Tsunehiko
authors.initials: T
authors.lastname: Nishimura
authors.forename: Morito
authors.initials: M
authors.lastname: Monden
mesh_terms: D000230:Adenocarcinoma / Q000000981:diagnostic imaging* / Q000235:genetics / Q000378:metabolism* / Q000556:secondary; D000368:Aged; D014408:Biomarkers, Tumor / Q000378:metabolism; D015179:Colorectal Neoplasms / Q000000981:diagnostic imaging* / Q000235:genetics / Q000378:metabolism* / Q000473:pathology; D018450:Disease Progression; D005260:Female; D019788:Fluorodeoxyglucose F18 / Q000493:pharmacokinetics*; D015972:Gene Expression Regulation, Neoplastic; D051272:Glucose Transporter Type 1 / Q000235:genetics / Q000378:metabolism*; D006801:Humans; D008113:Liver Neoplasms / Q000000981:diagnostic imaging / Q000378:metabolism / Q000556:secondary; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D049268:Positron-Emission Tomography; D011379:Prognosis; D019275:Radiopharmaceuticals / Q000493:pharmacokinetics*; D012680:Sensitivity and Specificity
chemical_list: D014408:Biomarkers, Tumor; D051272:Glucose Transporter Type 1; D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18