PMID- 29987620 OWN - NLM STAT- MEDLINE DCOM- 20190801 LR - 20200306 IS - 1860-2002 (Electronic) IS - 1536-1632 (Linking) VI - 21 IP - 2 DP - 2019 Apr TI - Linked Hexokinase and Glucose-6-Phosphatase Activities Reflect Grade of Ovarian Malignancy. PG - 375-381 LID - 10.1007/s11307-018-1247-2 [doi] AB - PURPOSE: Malignant cells exhibit increased rates of aerobic glycolysis. Here, we tested whether the accumulation of fluoro-deoxyglucose-6-phosphate (FDG6P) in ovarian cancers of differential malignancy reflects inversely correlated elevations of hexokinase (HK) and glucose-6-phosphatase (G6Pase) activities. PROCEDURES: Twenty-nine women with suspected ovarian cancer had positron emission tomography (PET) prior to surgery. From fresh-frozen tissue, we determined the activities of HK and G6Pase, and from the PET images, we determined the tumor maximum standardized uptake value (SUVmax) of 2-deoxy-2-[(18)F]fluoro-D-glucose. RESULTS: The SUVmax of malignant lesions significantly exceeded the SUVmax of benign (p < 0.005) and borderline lesions (p < 0.0005) that did not differ significantly. We found no significant correlation between measured HK or G6Pase activities and histological tumor type or SUVmax except that G6Pase activities were higher in malignant than borderline lesions (p < 0.05). Measured HK and G6Pase activities correlated inversely (p < 0.05). The slopes from the regression lines of the three correlations yielded positively correlated abscissa and ordinate intercepts, designated HK(max) and G6Pase(max), respectively (r = 0.67, p < 0.0001). The positive correlations between the abscissa and ordinate intercepts with SUVmax had regression coefficients of r = 0.44, p < 0.05; and r = 0.39, p < 0.05, respectively. CONCLUSIONS: The results distinguished two ovarian cancer phenotypes, one with elevated HK activity and low G6Pase activity, and another with the opposite characteristics. FAU - Olsen, Birgitte Brinkmann AU - Olsen BB AUID- ORCID: 0000-0002-6130-0387 AD - Department of Nuclear Medicine, Odense University Hospital, Klovervaenget 47, 5000, Odense, Denmark. birgitte.brinkmann.olsen@rsyd.dk. AD - Department of Clinical Research, University of Southern Denmark, Odense, Denmark. birgitte.brinkmann.olsen@rsyd.dk. FAU - Gjedde, Albert AU - Gjedde A AD - Department of Nuclear Medicine, Odense University Hospital, Klovervaenget 47, 5000, Odense, Denmark. AD - Department of Clinical Research, University of Southern Denmark, Odense, Denmark. FAU - Vilstrup, Mie Holm AU - Vilstrup MH AD - Department of Nuclear Medicine, Odense University Hospital, Klovervaenget 47, 5000, Odense, Denmark. FAU - Johnsen, Iben Birgit Gade AU - Johnsen IBG AD - Department of Clinical Pathology, Odense University Hospital, Odense, Denmark. FAU - Neumann, Gudrun AU - Neumann G AD - Department of Gynecology and Obstetrics, Odense University Hospital, Odense, Denmark. FAU - Torigian, Drew Avedis AU - Torigian DA AD - Department of Radiology, University of Pennsylvania School of Medicine, Hospital of the University of Pennsylvania, Philadelphia, USA. FAU - Alavi, Abass AU - Alavi A AD - Department of Radiology, University of Pennsylvania School of Medicine, Hospital of the University of Pennsylvania, Philadelphia, USA. FAU - Hoilund-Carlsen, Poul Flemming AU - Hoilund-Carlsen PF AD - Department of Nuclear Medicine, Odense University Hospital, Klovervaenget 47, 5000, Odense, Denmark. AD - Department of Clinical Research, University of Southern Denmark, Odense, Denmark. LA - eng PT - Journal Article PL - United States TA - Mol Imaging Biol JT - Molecular imaging and biology JID - 101125610 RN - 0Z5B2CJX4D (Fluorodeoxyglucose F18) RN - EC 2.7.1.1 (Hexokinase) RN - EC 3.1.3.9 (Glucose-6-Phosphatase) MH - Adult MH - Aged MH - Aged, 80 and over MH - Female MH - Fluorodeoxyglucose F18/pharmacokinetics MH - Glucose-6-Phosphatase/*metabolism MH - Hexokinase/*metabolism MH - Humans MH - Middle Aged MH - Ovarian Neoplasms/*enzymology OTO - NOTNLM OT - FDG OT - Glucose-6-phosphatase OT - Hexokinase OT - Ovarian cancer OT - Positron emission tomography (PET) EDAT- 2018/07/11 06:00 MHDA- 2019/08/02 06:00 CRDT- 2018/07/11 06:00 PHST- 2018/07/11 06:00 [pubmed] PHST- 2019/08/02 06:00 [medline] PHST- 2018/07/11 06:00 [entrez] AID - 10.1007/s11307-018-1247-2 [pii] AID - 10.1007/s11307-018-1247-2 [doi] PST - ppublish SO - Mol Imaging Biol. 2019 Apr;21(2):375-381. doi: 10.1007/s11307-018-1247-2.