Megestrol attenuates the hormonal response to CCK-4-induced panic attacks
| Autor: | Holger Jahn, Klaus Wiedemann, Michael Kellner, Thomas J. Raedler, Birgit Goedeken, Dorothee M. Gescher |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Adult
Male medicine.medical_specialty Hypothalamo-Hypophyseal System Hydrocortisone medicine.drug_class Premedication Pituitary-Adrenal System Placebo Anxiolytic Drug Administration Schedule Tetragastrin chemistry.chemical_compound Adrenocorticotropic Hormone Double-Blind Method Internal medicine medicine CCK-4 Humans Drug Interactions Cholecystokinin Panic disorder Panic Megestrol medicine.disease Psychiatry and Mental health Clinical Psychology Endocrinology chemistry Anxiety Female medicine.symptom Psychology Arousal hormones hormone substitutes and hormone antagonists medicine.drug |
| Zdroj: | Depression and anxiety. 23(3) |
| ISSN: | 1091-4269 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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