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Selective hypometabolism in the inferior frontal lobe in depressed patients with Parkinson's disease

✍ Scribed by Dr Helen S. Mayberg; Sergio E. Starkstein; Bernard Sadzot; Thomas Preziosi; Paula L. Andrezejewski; Robert F. Dannals; Henry N. Wagner Jr.; Robert G. Robinson

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
843 KB
Volume
28
Category
Article
ISSN
0364-5134

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✦ Synopsis

Abstract

Depression is a frequent finding in patients with Parkinson's disease (PD). Regional cerebral glucose metabolism was measured in depressed and nondepressed patients with PD and in age‐comparable normal control subjects using 2‐[^18^F]‐fluoro‐2‐deoxy‐D‐glucose and positron emission tomography (PET). Relative metabolic activity in the caudate and orbital‐inferior region of the frontal lobe was significantly lower in the depressed patients with PD as compared to both nondepressed patients and control subjects. There was a significant inverse correlation between relative glucose metabolism in the orbital‐inferior area of the frontal lobe and depression scores. This study suggests that depression in PD is associated with dysfunction in the caudate and orbital‐inferior area of the frontal lobe. This metabolic pattern is unlike that seen in patients with PD who have other behavioral deficits such as dementia, and suggests that disruption of basal ganglia circuits involving the inferior region of the frontal lobe may affect the regulation of mood.

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