ATAC: Study of the Difference Between Anorexia Nervosa With a History of Psychological Trauma and Classical Anorexia Nervosa on the Neurocognitive and Neurophysiological Factors

Sponsor

University Hospital, Montpellier (Other)

Overall Status

Recruiting

CT.gov ID

NCT04804358

Collaborator

(none)

100

Enrollment

Location

Arm

36.5

Anticipated Duration (Months)

2.7

Patients Per Site Per Month

Study Details

Study Description

Brief Summary

Recent studies suggest that patients with an history of trauma may represent a specific subtype of anorexia nervosa (AM) underlined by specific neurobiological and psychopathological mechanisms. Thus, AM-T subjects would manifest cognitive (specific difficulties in executive functions), emotional (emotional disruption, impulsivity, etc.) and neurobiological (secretion of kynurenine and neurokinins in the face of stress) caracteristics different from those of AM subjects.

Condition or Disease	Intervention/Treatment	Phase
Anorexia Nervosa	Behavioral: Exposition Test	N/A

Detailed Description

We will recruit a total of 100 patients with a diagnosis of anorexia nervosa in the university hospital of Montpellier : 50 patients with an history of psychological trauma and 50 patients without any history of psychological trauma

Participation consists of a half-day visit. Patients will perform clinical and neuropsychological assessments and an exposition test. During this test, participants will be exposed, for 7 minutes, to neutral, positive or negative emotional photos. Heart rate variability will be determined through a Biopac MP160 before, during and after this event. Saliva samples to measure kynurenin, tryptophan, substance P and neurokinin-1 will be collected before and directly after the test.

Study Design

Study Type:

Interventional

Anticipated Enrollment :

100 participants

Allocation:

N/A

Intervention Model:

Single Group Assignment

Masking:

None (Open Label)

Primary Purpose:

Other

Official Title:

Study of the Difference Between Anorexia Nervosa With a History (s) of Psychological Trauma (AM-T) and Classical Anorexia Nervosa (AM-C) on the Neurocognitive and Neurophysiological Factors

Actual Study Start Date :

Sep 17, 2021

Anticipated Primary Completion Date :

Apr 1, 2023

Anticipated Study Completion Date :

Oct 1, 2024

Arms and Interventions

Arm	Intervention/Treatment
Other: Anorexic women Anorexic women with or without history of psychological trauma will perform study procedure : sociodemographic and clinical assessments, measurement of cardiac variability and salivary cortisol changes, before, during and after the exposition test.	Behavioral: Exposition Test During this test (7 minutes) participants will be exposed to photos evoking positive or negative emotions (anger, disgust, sadness and fear) interspersed with emotionally neutral photos. The test sequence is composed of 3 blocks as follows: 12 photos evoking positive emotions (2 min) Pause of 30 seconds (white screen) 12 photos presenting a neutral emotional valence (2 min) Pause of 30 seconds (white screen) 12 photos evoking negative emotions (2min) In each block, photos will be selected and presented to the participant in a randomized and sequential manner. In total, 30 photos will be presented in 7 minutes to each participant (10 seconds per photo). The participant must be at rest in front of the computer screen during these 7 minutes with optimal visibility. The photos will be presented sequentially using software (E-Prime or Visual Basic 6.0). During this exposure test, a heart rate recording will be made using a BIOPAC MP160 recording system.

Arm

Intervention/Treatment

Other: Anorexic women

Anorexic women with or without history of psychological trauma will perform study procedure : sociodemographic and clinical assessments, measurement of cardiac variability and salivary cortisol changes, before, during and after the exposition test.

Behavioral: Exposition Test

During this test (7 minutes) participants will be exposed to photos evoking positive or negative emotions (anger, disgust, sadness and fear) interspersed with emotionally neutral photos. The test sequence is composed of 3 blocks as follows: 12 photos evoking positive emotions (2 min) Pause of 30 seconds (white screen) 12 photos presenting a neutral emotional valence (2 min) Pause of 30 seconds (white screen) 12 photos evoking negative emotions (2min) In each block, photos will be selected and presented to the participant in a randomized and sequential manner. In total, 30 photos will be presented in 7 minutes to each participant (10 seconds per photo). The participant must be at rest in front of the computer screen during these 7 minutes with optimal visibility. The photos will be presented sequentially using software (E-Prime or Visual Basic 6.0). During this exposure test, a heart rate recording will be made using a BIOPAC MP160 recording system.

Outcome Measures

Primary Outcome Measures

Changes in high frequency heart variability (HF-HRV) across the exposition test (before, during and after) [inclusion visit]
We aim to investigate if AM-T patients present changes in HF-HRV across exposition test compared to AM-C patients, measured by Biopac MP160

Secondary Outcome Measures

Changes in low frequency heart variability (LF-HRV) across the exposition test (before, during and after) [inclusion visit]
We aim to investigate if AM-T patients present changes in LF-HRV across exposition test compared to AM-C patients, measured by Biopac MP160
Changes in very low frequency heart variability (VLF-HRV) across the exposition test (before, during and after) [inclusion visit]
We aim to investigate if AM-T patients present changes in VLF-HRV across exposition test compared to AM-C patients, measured by Biopac MP160
Changes in the highest peak of the high frequency (HFhz) across the exposition test (before, during and after) [inclusion visit]
We aim to investigate if AM-T patients present changes in HFhz across exposition test compared to AM-C patients, measured by Biopac MP160
Changes in the interval between R peaks (R-R across the exposition test (before, during and after) [inclusion visit]
We aim to investigate if AM-T patients present R-R changes across exposition test compared to AM-C patients, measured by Biopac MP160
Changes in the R-R interval standard difference (STD-RR) across the exposition test (before, during and after) [inclusion visit]
We aim to investigate if AM-T patients present STD-RR changes across exposition test compared to AM-C patients, measured by Biopac MP160
Changes in the root mean successive squared differences of the R-R interval (RMSSD). across the exposition test (before, during and after) [inclusion visit]
We aim to investigate if AM-T patients present RMSSD changes across exposition test compared to AM-C patients, measured by Biopac MP160
Score to the Difficulties in Emotion Regulation Scale [inclusion visit]
We aim to assess the link between emotional regulation and psychological trauma in AN. DERS is a self-assessment scale measuring emotion dysregulation. The original DERS includes 36 items scored 1-5 where 1 is almost never, 2 is sometimes, 3 is about half the time, 4 is most of the time, and 5 is almost always. Of the 36 items, 11 are reverse scored. The DERS-36 yields a total score as well as six subscales where higher scores indicate more difficulties.
Score to the Beck depression inventory II [inclusion visit]
We aim to assess the link between eating symptomatology and psychological trauma in AN. The BDI-II is a self-administered questionnaire assessing the severity of depressive symptoms in 21 items. Each item is rated on a 4-points Likert scale ranging from 0 to 3. The total score varies between 0 and 63. higher scores mean more depressive symptoms
Score to the Eating Disorder Questionnaire [inclusion visit]
We aim to assess the link betxeen eating symptomatology and psychological trauma in AN. self-administered questionnaire assessing the intensity of eating symptoms over the past 28 days. A total score as well as 4 sub-scores (restriction, diet, weight, shape) varying from 0 to 6 are obtained.Higher scores mean higher eating concerns
Score to the Eating Disorder Inventory [inclusion visit]
We aim to assess the link between eating symptomatology and psychological trauma in AN. The EDI-2 is a 91-item self-report questionnaire assessing cognitive, emotional, and behavioral symptoms of eating disorders. It rates from 0 to 273. Higher scores means severe symptoms
Score to the Childhood trauma questionnaire [inclusion visit]
Score to the PTSD Checklist for DSM-5 [inclusion visit]
Score to the Wisconson Card Sorting Test [inclusion visit]
We aim to assess the link between mental flexibility, working memory, inhibition and psychological trauma in AN
Score to the Stroop Test [inclusion visit]
We aim to assess the link between mental flexibility, working memory, inhibition and psychological trauma in AN
Score to the Delay Discounting Test [inclusion visit]
We aim to assess the link between decision making and psychological trauma in AN
Score to the Trail Making Test [inclusion visit]
We aim to assess the link between mental flexibility, visio-spatial attention, processing speed and psychological trauma in AN
Changes in salivary tryptophan [inclusion visit]
study changes in salivary tryptophan before and after exposition test
Changes in salivary kynurenine [inclusion visit]
study changes in salivary kynurenine before and after exposition test
Changes in salivary P substance [inclusion visit]
study changes in salivary P substance before and after exposition test
Changes in salivary neurokinin-1 [inclusion visit]
study changes in salivary neurokinin-1before and after exposition test

Eligibility Criteria

Criteria

Ages Eligible for Study:

18 Years to 65 Years

Sexes Eligible for Study:

Female

Accepts Healthy Volunteers:

Inclusion criteria common to the 2 groups AM-T and AM-C :

Women Patient
Present a diagnosis of anorexia nervosa according to the DSM-5 criteria
Between 18 and 65 years old
Present a BMI> 14
Do not present a sight problem or be corrected appropriately by wearing glasses or contact lenses.
Be affiliated to a social security scheme, or beneficiary of such a scheme
Be able to understand the nature, purpose and methodology of the study

Inclusion criteria specific to patients in the AM-T group:

To have answered at least one of the grayed out items of the LEC-5, that is to say to have answered "it happened to me" to at least one of the items 1 to 13 or to item 16 "and / or having answered" I witnessed it "to at least one of items 14 and 15.

Inclusion criteria specific to patients in the AM-C group:

Not having answered "it happened to me" or "I witnessed it" to one of the items of LEC-5

Exclusion Criteria:

Present a severe unstable mental pathology in the opinion of the investigator
Present active suicidal ideation
Have consumed psychoactive substances in the last 24 hours before the assessment
Present a severe major depressive episode incompatible with the assessment, in the opinion of the investigator.
Present in the opinion of the investigator an unstable somatic state (eg severe metabolic disorder making it impossible or likely to impair the reliability of neuropsychological and cardiac evaluations).
Take a drug treatment acting on the cardiovascular system
Refusal of the patient
Be protected by law (tutorship or curatorship).
To be deprived of liberty by administrative decision.