Megestrol attenuates the hormonal response to CCK-4-induced panic attacks.

Abstract:

:Progestational hormones may have anxiolytic properties. CCK-4 (cholecystokinin tetrapeptide) can be used pharmacologically to induce panic attacks both in normal controls and patients suffering from panic disorder. In this study we compared the effects of pretreatment with the progestational hormone megestrol and placebo on CCK-4-induced panic attacks and stress hormone release in healthy male controls. Using a double-blind balanced design, we pretreated 10 medically and psychiatrically healthy male controls with placebo or megestrol 160 mg at 11 p.m. and 8 a.m. (sigma=320 mg) prior to the experiment. Following 1 h of rest, 12 blood samples were drawn between 1,000 h and 1,300 h and analyzed for ACTH and cortisol levels. At 1,100 h, subjects received an intravenous injection of 50 microg CCK-4. Clinical ratings were performed at 1,045 h and 1,110 h, and included the Acute Panic Inventory (API), International Diagnostic Checklist (IDCL), as well as a visual analog scale (VAS) for anxiety and tension. CCK-4 significantly increased anxiety and tension. Pretreatment with megestrol showed no significant effect on clinical ratings. Baseline ACTH and cortisol levels, as well as ACTH and cortisol levels after administration of CCK-4, were significantly reduced after pretreatment with megestrol. In a sample of healthy male controls, pretreatment with megestrol had a profound effect on the hypothalamic-pituitary-adrenal (HPA) axis, whereas the clinical effects on panic attacks were weak. Further studies in a larger sample of subjects, including both females and patients suffering from panic disorder, seem warranted.

journal_name

Depress Anxiety

journal_title

Depression and anxiety

authors

Raedler TJ,Jahn H,Goedeken B,Gescher DM,Kellner M,Wiedemann K

doi

10.1002/da.20147

subject

Has Abstract

pub_date

2006-01-01 00:00:00

pages

139-44

issue

3

eissn

1091-4269

issn

1520-6394

journal_volume

23

pub_type

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