Effect of the selective serotonin reuptake inhibitor fluvoxamine on CCK-4 induced panic attacks

Effect of the selective serotonin reuptake inhibitor fluvoxamine on CCK-4 induced panic attacks Data from animal studies suggest a functional relationship between the cholecystokinin-ergic (CCK) and the serotonergic (5-HT) system. There is increasing evidence that the cholecystokinin-4 (CCK 4 ) challenge test could be a valid experimental model for panic attacks in man. The aim of the present study is twofold; 1) to validate this model further and 2) to shed more light on the putative CCK\5-HT interaction. To this end, we studied the effect of the selective serotonin reuptake inhibitor (SSRI) fluvoxamine on CCK 4 -induced panic attacks. Twenty-six panic disorder (PD) patients received, before and after a double blind 8-week treatment period with fluvoxamine ( n = 17) or placebo ( n = 9), a single blind bolus injection with 50 μg CCK 4 . Treatment with fluvoxamine (150 mg daily) significantly decreased the sensitivity of PD patients for CCK 4 while placebo was without effect. Of the patients who responded to treatment, 83% no longer experienced a panic attack when rechallenged with CCK 4 , whereas in the non-responders group this was only 28%. In the fluvoxamine group the treatment response evaluated by the Hamilton Anxiety Scale (HAS) showed a statistically significant treatment effect. The results of this study strengthen the validity of the CCK 4 test as an experimental human model for panic attacks and yield evidence supporting the hypothesis that both CCK and serotonin are implicated in the regulation of anxiety. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Psychopharmacology Springer Journals

Effect of the selective serotonin reuptake inhibitor fluvoxamine on CCK-4 induced panic attacks

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Publisher
Springer Journals
Copyright
Copyright © 1997 by Springer-Verlag Berlin Heidelberg
Subject
Legacy
ISSN
0033-3158
eISSN
1432-2072
DOI
10.1007/s002130050201
Publisher site
See Article on Publisher Site

Abstract

Data from animal studies suggest a functional relationship between the cholecystokinin-ergic (CCK) and the serotonergic (5-HT) system. There is increasing evidence that the cholecystokinin-4 (CCK 4 ) challenge test could be a valid experimental model for panic attacks in man. The aim of the present study is twofold; 1) to validate this model further and 2) to shed more light on the putative CCK\5-HT interaction. To this end, we studied the effect of the selective serotonin reuptake inhibitor (SSRI) fluvoxamine on CCK 4 -induced panic attacks. Twenty-six panic disorder (PD) patients received, before and after a double blind 8-week treatment period with fluvoxamine ( n = 17) or placebo ( n = 9), a single blind bolus injection with 50 μg CCK 4 . Treatment with fluvoxamine (150 mg daily) significantly decreased the sensitivity of PD patients for CCK 4 while placebo was without effect. Of the patients who responded to treatment, 83% no longer experienced a panic attack when rechallenged with CCK 4 , whereas in the non-responders group this was only 28%. In the fluvoxamine group the treatment response evaluated by the Hamilton Anxiety Scale (HAS) showed a statistically significant treatment effect. The results of this study strengthen the validity of the CCK 4 test as an experimental human model for panic attacks and yield evidence supporting the hypothesis that both CCK and serotonin are implicated in the regulation of anxiety.

Journal

PsychopharmacologySpringer Journals

Published: Feb 1, 1997

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