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• W2137232627 endingPage "375" @default.
• W2137232627 startingPage "375" @default.
• W2137232627 abstract "<h3>Background:</h3> Multiple lines of evidence suggest that brain serotonergic systems may be disturbed in seasonal affective disorder (SAD). Previously, we found that the serotonergic agent<i>meta</i>-chlorophenylpiperazine (m-CPP) produced increases in activation and euphoria in depressed patients with SAD, but not in patients with SAD following light treatment or in the summer, nor in healthy control subjects in any condition. In the present study, we attempted to replicate and extend this finding using better methods. <h3>Methods:</h3> Seventeen outpatients with SAD and 15 control subjects underwent successive 3-week periods of bright light treatment and light avoidance in a randomized order. During the third week of each condition, on 2 different occasions, subjects were admitted to the hospital for a night of sleep (core temperatures were recorded), followed by infusions of m-CPP (0.08 mg/kg) or placebo the next morning. Dependent measures included the 24-item National Institute of Mental Health Self-Rating Scale, plasma corticotropin, cortisol, prolactin, growth hormone, and norepinephrine concentrations, and core temperatures. <h3>Results:</h3> Meta-chlorophenylpiperazine produced (1) significant increases in activation-euphoria ratings only in depressed patients with SAD in the untreated condition and (2) blunted corticotropin and norepinephrine responses in patients with SAD compared with controls across both light treatment conditions. In both groups, light treatment was associated with significant reductions in nocturnal core temperatures, which were correlated with similarly significant reductions in mean diurnal growth hormone concentrations. In patients with SAD, (1) the reductions in nocturnal core temperatures also were correlated with the reductions in baseline depression ratings and (2) the reductions in mean growth hormone concentrations were significantly smaller compared with controls. <h3>Conclusions:</h3> The abnormal m-CPP—induced activationeuphoria responses represent a replicated state marker of winter depression in patients with SAD. The blunted m-CPP—induced responsiveness of the hypothalamicpituitary-adrenal axis and the sympathetic nervous system may represent traitlike abnormalities. The improvements in mood following light treatment in patients with SAD seem to be associated with the lowering of nocturnal core temperatures. The findings, although not easily explained based on a uniform abnormality of serotonin receptors, are nonetheless compatible with the notion that selected regions of the central nervous system are deficient in serotonin transmission during winter depression." @default.
• W2137232627 created "2016-06-24" @default.
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• W2137232627 date "1997-04-01" @default.
• W2137232627 modified "2023-10-16" @default.
• W2137232627 title "Effects of Meta-chlorophenylpiperazine Infusions in Patients With Seasonal Affective Disorder and Healthy Control Subjects" @default.
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• W2137232627 doi "https://doi.org/10.1001/archpsyc.1997.01830160103013" @default.
• W2137232627 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/9107154" @default.
• W2137232627 hasPublicationYear "1997" @default.
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