Open AccessFructose 1,6-Bisphosphatase 1 Expression Reduces 18F-FDG Uptake in Clear Cell Renal Cell Carcinoma
Author(s) -
Ruohua Chen,
Xiang Zhou,
Gang Huang,
Jianjun Li
Publication year - 2019
Publication title -
contrast media and molecular imaging/contrast media and molecular imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.714
H-Index - 50
eISSN - 1555-4317
pISSN - 1555-4309
DOI - 10.1155/2019/9463926
Subject(s) - clear cell renal cell carcinoma , renal cell carcinoma , positron emission tomography , immunohistochemistry , glut1 , algorithm , nuclear medicine , medicine , glucose transporter , mathematics , pathology , insulin
Purpose To determine the relationship between fructose 1,6-bisphosphatase 1 (FBP1) expression and fluorine 18 ( 18 F) fluorodeoxyglucose (FDG) uptake in patients with clear cell renal cell carcinoma (ccRCC), and to investigate how 18 F-FDG uptake and FBP1 expression are related to tumor metabolism and tumor differentiation grade.Materials and Methods A total of 54 patients with ccRCC underwent 18 F-FDG combined positron emission tomography and computed tomography (PET/CT) before tumor resection. The maximum standardized uptake value (SUVmax) for the primary tumor was calculated from the 18 F-FDG uptake. The relationship between SUVmax of primary tumor and the expression of FBP1, hexokinase 2 (HK2), and glucose transporter 1 (GLUT1) was analyzed via immunohistochemical analysis.Results We identified an inverse relationship between FBP1 expression and SUVmax ( P =0.031). SUVmax was higher in patients with high-grade ccRCC (mean, 11.6 ± 5.0) than in those with low-grade ccRCC (mean, 3.8 ± 1.6, P < 0.001). FBP1 expression was significantly lower in patients with high-grade ccRCC (mean, 0.23 ± 0.1) than in those with low-grade ccRCC (mean, 0.57 ± 0.08; P =0.018). FBP1 status could be predicted with an accuracy of 66.7% when a SUVmax cutoff value of 3.55 was used. GLUT1 expression in ccRCC was positively correlated with 18 F-FDG uptake and FBP1 status, whereas HK2 expression was not.Conclusion SUVmax in patients with ccRCC is inversely associated with the expression of FBP1, and FBP1 may inhibit 18 F-FDG uptake via regulating GLUT1. SUVmax is higher in patients with high-grade ccRCC than in those with low-grade ccRCC, which could be the result of lower FBP1 expression in patients with high-grade ccRCC.