Cerebral Glucose Metabolic Response to Combined Total Sleep Deprivation and Antidepressant Treatment in Geriatric Depression

• Published in: The American journal of psychiatry Vol. 156; no. 5; pp. 683 - 689
• Main Authors: Smith, Gwenn S., Reynolds, Charles F., Pollock, Bruce, Derbyshire, Stuart, Nofzinger, Eric, Dew, Mary Amanda, Houck, Patricia R., Milko, Donna, Meltzer, Carolyn Cidis, Kupfer, David J.
• Format: Journal Article
• Language: English
• Published: Washington, DC American Psychiatric Publishing 01-05-1999; American Psychiatric Association
• Subjects: Age Factors; Aged; Antidepressants; Antidepressive Agents, Second-Generation - therapeutic use; Associated treatments; Biological and medical sciences; Brain; Brain - diagnostic imaging; Brain - metabolism; Cerebral glucose; Combined Modality Therapy; Depression; Depressive Disorder - drug therapy; Depressive Disorder - metabolism; Depressive Disorder - therapy; Elderly people; Electroencephalography; Female; Fluorodeoxyglucose F18; Functional Laterality; Glucose; Glucose - metabolism; Gyrus Cinguli - diagnostic imaging; Gyrus Cinguli - metabolism; Humans; Magnetic Resonance Imaging; Male; Medical sciences; Mental depression; Metabolism; Paroxetine - therapeutic use; Psychiatric Status Rating Scales; Psychology. Psychoanalysis. Psychiatry; Psychopathology. Psychiatry; Response; Sleep - physiology; Sleep Deprivation; Tomography, Emission-Computed; Treatment; Treatment Outcome; Treatments; Human; Deprivation; Psychotropic; Central nervous system; Depression; Glucose; Metabolism; Chemotherapy; Sleep; Antidepressant agent; Combined treatment; Elderly; Brain (vertebrata)
• ISSN: 0002-953X; 1535-7228
• DOI: 10.1176/ajp.156.5.683

OBJECTIVE: The treatment of geriatric depression is complicated by a variable and delayed response to antidepressant treatment. The present study was undertaken to test the hypothesis that combined total sleep deprivation and paroxetine treatment would produce a persistent reduction in glucose metabolism in the anterior cingulate cortex similar to that reported after long-term antidepressant treatment. METHOD: Six elderly depressed patients who met the DSM-IV criteria for major depressive disorder and six age-matched comparison subjects underwent serial positron emission tomography (PET) studies at baseline, after total sleep deprivation, after recovery sleep (after the initial paroxetine dose), and after 2 weeks of paroxetine treatment (patients only). The PET data were analyzed by using statistical parametric mapping methods. RESULTS: The patients' scores on a 13-item version of the Hamilton Depression Rating Scale were decreased after total sleep deprivation, after recovery sleep, and after 2 weeks of treatment. The Hamilton depression scores of the comparison subjects were not significantly altered. In the patients, the greatest reductions in normalized, relative glucose metabolism after sleep deprivation were observed in the anterior cingulate cortex (Brodmann area 24), and they persisted after recovery sleep and antidepressant treatment. The comparison subjects demonstrated increased metabolism in these areas. CONCLUSIONS: Improvement in the patients' depressive symptoms was accompanied by reduced glucose metabolism in the right anterior cingulate cortex and right medial frontal cortex. These preliminary data indicate that in elderly depressed patients, total sleep deprivation may accelerate the clinical and glucose metabolic response to antidepressant treatment.