Striatal hypometabolism distinguishes striatonigral degeneration from Parkinson's disease.
Regional and global metabolic rates for glucose were estimated using 18F-fluorodeoxyglucose and positron emission tomography in 10 patients with a clinical likelihood of striatonigral degeneration (2 men and 8 women; mean age, 61.8 +/- 6.9 years; mean disease duration, 4.7 +/- 2.2 years; mean Hoehn and Yahr score, 3.5 +/- 0.8). Measures of brain glucose metabolism in these patients were compared with those for 10 age-matched normal volunteers, 10 disease severity-matched patients with Parkinson's disease (PD), and 10 disease duration-matched patients with PD. Normalized glucose metabolism was significantly reduced in the caudate (p < 0.03) and putamen (p < 0.003) as compared with that in normal and PD control subjects, and discriminated patients with striatonigral degeneration from control subjects (p < 0.002). Putamenal hypometabolism in patients with striatonigral degeneration correlated significantly with quantitative ratings of motor disability (p < 0.02). These results suggest that quantitative 18F-fluorodeoxyglucose positron emission tomography techniques may be useful in supporting a diagnosis of striatonigral degeneration in life, and in objectively assessing disease severity and potential therapeutic interventions.
Eidelberg
D
D
Department of Neurology, North Shore University Hospital-Cornell University Medical College, Manhasset, NY 11030.
Takikawa
S
S
Moeller
J R
JR
Dhawan
V
V
Redington
K
K
Chaly
T
T
Robeson
W
W
Dahl
J R
JR
Margouleff
D
D
Fazzini
E
E
D000368:Aged; D001921:Brain / Q000000981:diagnostic imaging / Q000378:metabolism*; D003342:Corpus Striatum / Q000000981:diagnostic imaging / Q000378:metabolism* / Q000473:pathology; D003847:Deoxyglucose / Q000031:analogs & derivatives* / Q000378:metabolism; D005260:Female; D005462:Fluorine Radioisotopes; D019788:Fluorodeoxyglucose F18; D005947:Glucose / Q000378:metabolism*; D006801:Humans; D007700:Kinetics; D008297:Male; D008875:Middle Aged; D009928:Organ Specificity; D010300:Parkinson Disease / Q000000981:diagnostic imaging / Q000378:metabolism* / Q000473:pathology; D012016:Reference Values; D013378:Substantia Nigra / Q000000981:diagnostic imaging / Q000378:metabolism* / Q000473:pathology; D014055:Tomography, Emission-Computed
D005462:Fluorine Radioisotopes; D019788:Fluorodeoxyglucose F18; D003847:Deoxyglucose; D005947:Glucose