The Use of Propranolol to Block Memory Reconsolidation in PTSD

Status Terminated

Clinical Trial Summary

The purpose of this investigation is to see if propranolol will reduce the psychophysiological hyperactivation associated with memories of combat stress in Veterans with Posttraumatic Stress Disorder.

Clinical Trial Description

The goal of this translational research project is to generate a pilot sample of data from an investigation of a novel therapeutic approach to post traumatic stress disorder (PTSD). Current treatments for PTSD include exposure and other aspects of cognitive therapy as well as drug therapies based on serotonin-reuptake inhibiting antidepressant agents. However, these treatments are often unsuccessful, and symptoms in affected individuals may persist for decades. The central hypothesis guiding this research project posits that acquired fear responses, such as those in PTSD, when reactivated by recall become sensitive to noradrenergic modulation and thus may be permanently attenuated by blocking noradrenergic transmission. Further, we predict that this attenuation will facilitate subsequent therapy. In the current study, we will be investigating this model in three groups of Veterans of either Operation Iraqi Freedom or Operation Enduring Freedom (OIF/OEF) with PTSD: 1) Individuals who receive propranolol following recall of a traumatic memory (Propranolol-trauma); 2) Individuals who receive a placebo following recall of a traumatic memory (Placebo-trauma), and; 3) Individuals who receive propranolol following recall of an affective neutral memory (Propranolol-neutral). In addition, traumatic memory recall will be psychophysiologically assessed by measuring Veterans' facial corrugator electromyography (EMG), skin conductance, blood pressure and cardiovascular inter-beat interval responses pre- and one month post-medication administration. ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator, Outcomes Assessor), Primary Purpose: Treatment

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT00611871
Study type	Interventional
Source	Wayne State University
Contact
Status	Terminated
Phase	Phase 2
Start date	September 2007
Completion date	September 2015

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See also
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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.