Clinical trial NCT01713556: Treatment of PTSD by Reduction of Traumatic Memory Reconsolidation by Propranolol : a Multisite Trial
Official title: Treatment of PTSD by Reduction of Traumatic Memory Reconsolidation by Propranolol : a Multisite Trial
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE2
Conditions: Post-traumatic Stress Disorder
Keywords: PTSD, Propranolol
Lead sponsor: University Hospital, Toulouse
Sponsor class: OTHER
First posted: 2012-10-24
Enrollment: 87
Sex: ALL
Minimum age (years): 18
Maximum age (years): 65
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: The purpose of this study is to test whether propranolol, when given during a re-evocation of a traumatic memory, is capable of reducing subsequent PTSD symptoms associated with that memory.

Detailed description: Post-traumatic stress disorder (PTSD) develops following an exposure to a life threatening event. One of the characteristic features of PTSD is the recurrence of intrusive memories of an experienced trauma. The persistence of disturbing traumatic memories in PTSD is often explained in terms of a trauma-induced enhancement of memory encoding. Several studies indicate that an increased noradrenergic activity during trauma enhances the encoding of memory. Elevated levels of norepinephrine in the cerebrospinal fluid of individuals with PTSD and the correlation of this elevation with the severity of PTSD symptoms suggest that increased noradrenergic activity is also involved in the maintenance of PTSD symptoms. Reactivation of memory by retrieval also renders the memory labile and susceptible to treatments. This latter process is referred to as memory reconsolidation. Consolidation and reconsolidation both occur within a distinct time window following new learning (in consolidation) and/or retrieval (in reconsolidation). Even well-consolidated old fear memories undergo reconsolidation and may be disrupted by means of pharmacological manipulation. Propranolol may be effective in treating PTSD long after symptoms have been consolidated. Propranolol given after reactivation of the memory of a past traumatic event reduces physiologic responding during subsequent mental imagery of the event.

HYPOTHESE: Subjects with chronic PTSD who receive propranolol before trauma evocation will subsequently show decreased PTSD symptoms, compared to subjects who receive a placebo.

METHOD: 56 participants with chronic PTSD will be recruited for participation. On Week 1, the subjects will complete a standardized measure of PTSD symptoms. Next, 90 minutes after the administration of the study medication (either propranolol or placebo), participants will undergo a script preparation procedure, during which they will disclose details of their traumatic event. Scripts portraying this event will be prepared for subsequent replay.

On Week 2, after the administration of the study medication (either propranolol or placebo), participants will be asked (reading the script) to engaged in a script-driven mental imagery of the traumatic event. Following this procedure, PTSD symptoms will be assessed.

The same procedure will be repeated on Weeks 3, 4, 5 and 6. On Weeks 7 and 18, the standardized measure of PTSD symptoms will be repeated.

Eligibility criteria: Inclusion Criteria:

* Diagnosis of chronic PTSD
* PTSD CheckList total score \>44

Exclusion Criteria:

* Systolic blood pressure \< 100 mmHg
* Contraindication to Propranolol
* Previous adverse reaction to a β-blocker
* Use of another β-blocker
* Use of medication that could involve potentially dangerous interactions with propranolol
* Psychotherapy or treatment with any pharmacologic PTSD medication within the 2 weeks prior to inclusion (6 weeks for fluoxetine)
* Female with reproductive potential without reliable means of contraception
* Pregnancy or lactation
* Alcohol or drug abuse

Primary outcomes:
measure: PTCD CheckList (PCL) total score.
timeFrame: difference between week 1 (before administration of the study medication) and week 7 (one week after the last intake of study medication)
Secondary outcomes:
Other outcomes:
Locations:
city: Bordeaux
country: France
facility: Centre Hospitalier Charles Perrens
city: Lille
country: France
facility: Chru Lille
city: Montpellier
country: France
facility: Chu Montpellier
city: Toulouse
country: France
facility: CHU Toulouse
Study officials:
affiliation: University Hospital, Toulouse
name: Philippe BIRMES, MD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Roullet P, Vaiva G, Very E, Bourcier A, Yrondi A, Dupuch L, Lamy P, Thalamas C, Jasse L, El Hage W, Birmes P. Traumatic memory reactivation with or without propranolol for PTSD and comorbid MD symptoms: a randomised clinical trial. Neuropsychopharmacology. 2021 Aug;46(9):1643-1649. doi: 10.1038/s41386-021-00984-w. Epub 2021 Feb 21.