Journal of Jilin University Medicine Edition ›› 2015, Vol. 41 ›› Issue (01): 125-128.doi: 10.13481/j.1671-587x.20150124

Previous Articles     Next Articles

Feasibility of glucose loading at delayed phase of FDG PET/CT scaning in predicting influence of hyperglycemiain multi- drug resistance protein or P-glycoprotein

JIN Zhonghui1, LYU Zhongwen2, ZHU Huici1, LIU Jun1, HE Ping1, LI Xinxin1, SONG Le1, LIU Yuliang1   

  1. 1. Department of Nuclear Medicine, Third Hospital, Peking University, Beijing 100191, China;
    2. Department of Radiology, China-Japan Union Hospital, Jilin University, Changchun 130033, China
  • Received:2014-06-27 Published:2015-01-30

Abstract:

Objective To find out whether there is relationship between hyperglycemia and activities of multi-drug resistance protein (MRP) or P-glycoprotein (P-gp) which are the key enzymes of 18F-FDG extraction out of cells through the method of glucose loading at delayed phase of PET/CT scaning, and to clarify its possible mechanism. Methods 12 patients with malignant tumor were randomly selected to the experimental group, as a control, 30 cases of conventional dual phase scan were randomly selected into control group.The patients in groups received routine fasting early phase PET/CT scan, and the delayed scan in experimental group was performed after orally taken glucose, whereas in control group, there was not any glucose or sugar taken.The standardized uptake values (SUV) of early and delayed imaging of tumor and healthy tissues in two groups were recorded and analyzed. Results The SUV changes of each ROI between two phases at control group: the SUVmax of tumors was increased obviously at delayed phase (P<0.01);the SUVmean of musclus erector spinae wasn't increased obviously at delayed phase(P<0.05), the SUVmean of live (P<0.01) and aorta (P<0.01) were decreased obviously at delayed phase.However, in experimental group, the SUVmean of musculus erector spinae was increased obviously at delayed phase(P<0.05);the SUVmax of tumors wasn't increased obviously at delayed phase (P<0.05), which were different with control group; whereas the SUVmean of live (P<0.01) and aorta (P<0.01) were also decreased obviously at delayed phase. Conclusion The SUV in tumor tissue isn't increased significantly after glucose loading, which indicates that a balance of 18F-FDG discharging and entering the tumor cells is obtained and illustrates that hyperglycemia might induce the up-regulation or activation of MRP or P-gp.

Key words: 18F-fluorodeoxyglucose, PET/CT, glucose loading, diabetes mellitus, malignant tumor, prognosis

CLC Number: 

  • R730.44