Intravenous administration of the neuropeptide galanin has fast antidepressant efficacy and affects the sleep EEG

Psychoneuroendocrinology
H MurckAxel Steiger

Abstract

Recently, we demonstrated that the intravenous administration of the neuropeptide galanin acts on the sleep EEG of healthy young subjects similar to sleep deprivation. As this effect could imply an antidepressive potency we studied the effect of intravenous galanin administration on psychopathology and sleep EEG in patients with depression. Galanin was administered to 10 patients with depression, who were on a stable dose of trimipramine. A placebo controlled double blind randomized design was used. Intravenous boli of galanin in a dose of 4 x 50 microg or placebo were administered hourly between 09:00 and 12:00 h. Galanin or placebo, respectively were administered on 2 days each. The sequence of the galanin or placebo days was randomized, allowing for various crossovers. The Hamilton depression rating scale score (HAMD) was performed 30 min before the first and 30 min after the last injection. The mean of the HAMD change between 08:30 and 12:30 h was chosen as primary efficacy variable. Sleep EEGs were recorded once post placebo treatment and once post verum treatment. In this case, recordings started at 23:00 h and ended at 07:00 h the next morning. The HAMD-difference between 08:30 and 12:30 h was significantly greater at th...Continue Reading

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Related Concepts

Tricyclic Antidepressive Agents
Melancholia
Double-Blind Method
Polychemotherapy
Electroencephalogram
Intravenous Injections
Sleep, Slow-Wave
Insufficient Sleep Syndrome
Trimipramine, (-)-Isomer
Polysomnography

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