In vivo uptake of [11C]choline does not correlate with cell proliferation in human prostate cancer
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Prostate cancer is the second leading cause of death from cancer among US men. Positron emission tomography (PET) with [11C]choline has been shown to be useful in the staging and detection of prostate cancer. The background of the increased uptake of choline in human prostate cancer is not completely understood. The aim of this study was to prospectively investigate the relationship between the [11C]choline uptake and the cell proliferation in human prostate cancer.
Prostate cancer tissue from 18 patients who had undergone a radical prostatectomy for histologically proven disease was studied. An [11C]choline PET scan was performed prior to surgery. Post-prostatectomy specimens were prepared and stained with the antibody MIB-1 for Ki-67, which depicts proliferation. Two independent observers counted the amount of stained nuclei per specimen.
Prostate cancer showed Ki-67 staining and high uptake of [11C]choline. Statistical analysis showed no significant correlation between [11C]choline uptake and Ki-67 staining (R=0.23; P=0.34). No significant relationships were found between the uptake of [11C]choline (SUV) and either preoperative PSA (R=0.14; P=0.55) or Gleason sum score (R=0.28; P=0.25).
In vivo uptake of [11C]choline does not correlate with cell proliferation in human prostate cancer as depicted by Ki-67. Our results suggest that a process other than proliferation is responsible for the uptake of [11C]choline in prostate cancer.
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- In vivo uptake of [11C]choline does not correlate with cell proliferation in human prostate cancer
European Journal of Nuclear Medicine and Molecular Imaging
Volume 32, Issue 6 , pp 668-673
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- Prostate cancer
- Cell proliferation
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- Author Affiliations
- 1. Department of Urology, Groningen University Hospital, Groningen, The Netherlands
- 2. PET Centre, Groningen University Hospital, P.O. Box 30.001, 9700 RB, Groningen, The Netherlands
- 3. Department of Pathology, Groningen University Hospital, Groningen, The Netherlands