Stress Systems and Psychotherapy in Depression (Bio-COPE)

October 22, 2020 updated by: Dr. Sarah Schumacher, Freie Universität Berlin

Biological Correlates of an Internet-based Psychological Intervention for Depression

Dysregulation of the hypothalamus-pituitary-adrenal (HPA) axis as well as maladaptive activation of the autonomic nervous system (ANS) are discussed as relevant factors in the development of a major depressive episode and as a correlate of its clinical manifestation. Preliminary evidence suggests that the hypercortisolaemic pattern in a subgroup of depressed patients may predict non-responses to psychotherapeutic treatment. At the same time, it is conceivable that disorder-related alterations in HPA axis and ANS regulation change in response to effective treatment, such as cognitive behavioural therapy (CBT), and that those changes could parallel changes in depressive symptoms. Identifying such associations may shed light on biological and psychological mechanisms of action underlying successful treatment.

However, so far, no studies have investigated depressed patients with regard to dysregulation in both stress systems, HPA axis and ANS, before psychotherapeutic treatment, nor have changes in functioning of both systems been inspected in response to treatment. Moreover, a detailed investigation of depressive symptom trajectories over the course of treatment and its associations with changes in HPA axis and ANS regulation is lacking. It can be speculated that specific techniques of the treatment, e.g., typical CBT elements, such as behavioural activation or cognitive restructuring, might particularly be associated with changes in HPA axis and ANS regulation.

The main aims of this project are to investigate:

  1. whether diurnal salivary cortisol and alpha-amylase as well as hair cortisol concentrations change from pre- to post-intervention in treatment responders compared to non-responders;
  2. whether diurnal salivary cortisol and alpha-amylase concentrations change from pre- to mid-intervention and from mid- to post-intervention in treatment responders compared to non-responders;
  3. whether changes in diurnal salivary cortisol, alpha-amylase and hair cortisol concentrations are significantly correlated with changes in depressive symptoms;
  4. whether concentrations of diurnal salivary cortisol and alpha-amylase as well as hair cortisol at pre-treatment predict future treatment response (i.e., on a psychological level).

    On an exploratory level, it will be investigated:

  5. which elements of a CBT intervention for depression (behavioural activation vs. cognitive restructuring) are associated with changes in diurnal salivary cortisol and alpha-amylase concentrations.

It is hypothesised:

  1. that pre- to post-intervention decreases in diurnal salivary cortisol and alpha-amylase as well as hair cortisol concentrations will be more pronounced in responders compared to non-responders.
  2. that pre- to mid-intervention and mid- to post-intervention decreases in diurnal salivary cortisol and alpha-amylase will be more pronounced in responders compared to non-responders.
  3. that changes in depressive symptoms will significantly correlate with changes in diurnal cortisol and diurnal alpha-amylase as well as hair cortisol concentrations.
  4. that pre-intervention diurnal salivary cortisol and alpha-amylase as well as hair cortisol concentrations will be higher in future non-responders, compared to responders.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Recruitment:

Patients will be recruited from an ongoing project providing an internet-based cognitive behavioral intervention for patients suffering from mild to moderate depression.

Protocol:

In this study, a total of N=42 patients fulfilling criteria for a current major depressive episode will undergo a 6-week internet-based cognitive behavioural intervention which consists of seven consecutive modules. Diurnal (salivary) and hair cortisol as well as diurnal (salivary) alpha-amylase will be assessed immediately before and after treatment, and at mid-treatment (i.e., after four of seven modules). Saliva samples (six samples per day) will be collected over two consecutive days. One hair sample will be obtained at pre- and post-intervention assessments respectively.

Study Type

Interventional

Enrollment (Actual)

42

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

      • Berlin, Germany, 14195
        • Freie Universitaet Berlin

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Current major depressive episode (F32.0, F32.1, F33.0, F33.1)
  • Agreement to participate in the study
  • At least 18 years of age

Exclusion Criteria:

  • Diagnosis of schizophrenia, schizotypal and delusional disorders (F20-F29)
  • Acute suicidal patients
  • Acute manic episode
  • Substance related abuse or addiction
  • Pregnancy or lactation
  • Chronic somatic diseases
  • Severe somatic diseases (e.g., endocrinological, neurological, autoimmune diseases)
  • Glucocorticoid medication intake during the last six months
  • Concurrent psychotherapeutic treatment

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: iCBT for depression - behavioral activation first (BAF)
internet-based intervention for mild to moderate depression: patients receive behavioral activation first, followed by cognitive restructuring
The six-weeks, therapist-guided, internet-based intervention for depression includes expressive writing tasks and further consists of key elements of cognitive behavioral therapy (CBT) for depression. In seven consecutive modules, patients receive psychoeducation and instructions for weekly tasks, and an individualized feedback letter of their therapist after each module. The intervention is effective in reducing depressive symptoms (Zagorscak et al., 2018). In the current study, patients will be randomly assigned to two different conditions with varying orders of modules: 1. patients will receive two modules (module 3 and 4) of behavioral activation, followed by two modules (modules 5 and 6) of cognitive restructuring; 2. patients will receive two modules (module 3 and 4) of cognitive restructuring, followed by two modules (modules 5 and 6) of behavioral activation. All other modules (1, 2 and 7) will be identical across conditions.
Experimental: iCBT for depression - cognitive restructuring first (CRF)
internet-based intervention for mild to moderate depression: patients receive cognitive restructuring first, followed by behavioral activation
The six-weeks, therapist-guided, internet-based intervention for depression includes expressive writing tasks and further consists of key elements of cognitive behavioral therapy (CBT) for depression. In seven consecutive modules, patients receive psychoeducation and instructions for weekly tasks, and an individualized feedback letter of their therapist after each module. The intervention is effective in reducing depressive symptoms (Zagorscak et al., 2018). In the current study, patients will be randomly assigned to two different conditions with varying orders of modules: 1. patients will receive two modules (module 3 and 4) of behavioral activation, followed by two modules (modules 5 and 6) of cognitive restructuring; 2. patients will receive two modules (module 3 and 4) of cognitive restructuring, followed by two modules (modules 5 and 6) of behavioral activation. All other modules (1, 2 and 7) will be identical across conditions.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Changes in salivary cortisol concentration
Time Frame: pre-intervention, mid-intervention (after an average of three weeks), post-intervention (after an average of six weeks)
Changes in diurnal profiles (six time points: awakening, +30 min., 11am, 2 pm, 6pm, 9pm) of salivary cortisol concentration (nmol/l), measured on two consecutive days, at mid-intervention and post-intervention in responders compared to non-responders to the psychological intervention (assessed by Patient Health Questionnaire (PHQ-9))
pre-intervention, mid-intervention (after an average of three weeks), post-intervention (after an average of six weeks)
Differences in salivary cortisol concentration
Time Frame: pre-intervention
Differences in diurnal profiles (six time points: awakening, +30 min., 11am, 2 pm, 6pm, 9pm) of cortisol concentration (nmol/l), measured on two consecutive days, at pre-intervention in responders compared to non-responders to the psychological intervention (assessed by PHQ-9)
pre-intervention
Changes in salivary alpha-amylase concentration
Time Frame: pre-intervention, mid-intervention (after an average of three weeks), post-intervention (after an average of six weeks)
Changes in diurnal profiles (six time points: awakening, +30 min., 11am, 2 pm, 6pm, 9pm) of salivary alpha-amylase concentration (U/ml), measured on two consecutive days, at mid-intervention and post-intervention in responders compared to non-responders to the psychological intervention (assessed by Patient Health Questionnaire (PHQ-9))
pre-intervention, mid-intervention (after an average of three weeks), post-intervention (after an average of six weeks)
Differences in salivary alpha-amylase concentration
Time Frame: pre-intervention
Differences in diurnal profiles (six time points: awakening, +30 min., 11am, 2 pm, 6pm, 9pm) of salivary alpha-amylase concentration (U/ml), measured on two consecutive days, at pre-intervention in responders compared to non-responders to the psychological intervention (assessed by PHQ-9)
pre-intervention
Changes in hair cortisol concentration
Time Frame: pre-intervention, post-intervention (after an average of six weeks)
Changes in hair cortisol concentrations (nmol/l) at post-intervention in responders compared to non-responders to the psychological intervention (assessed by Patient Health Questionnaire (PHQ-9))
pre-intervention, post-intervention (after an average of six weeks)
Differences in hair cortisol concentration
Time Frame: pre-intervention
Differences in hair cortisol concentrations (nmol/l) at pre-intervention in responders compared to non-responders to the psychological intervention (assessed by PHQ-9)
pre-intervention

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Sleep quality (self-report)
Time Frame: pre-intervention, mid-intervention (after an average of three weeks), post-intervention (after an average of six weeks)
Changes in Pittsburgh Sleep Quality Index (PSQI); scale ranges from 0 to 21
pre-intervention, mid-intervention (after an average of three weeks), post-intervention (after an average of six weeks)
Chronic stress (self-report)
Time Frame: pre-intervention, mid-intervention (after an average of three weeks), post-intervention (after an average of six weeks)
Changes in Trier Inventory for the assessment of chronic stress - TICS (Trier Inventar zum chronischen Stress), scale ranges from 0 to 48
pre-intervention, mid-intervention (after an average of three weeks), post-intervention (after an average of six weeks)
Cognitive biases (self-report)
Time Frame: pre-intervention, mid-intervention (after an average of three weeks), post-intervention (after an average of six weeks)
Changes in Cognitive Styles Assessment (COSTA-21); scale ranges from 0 to 5 per item
pre-intervention, mid-intervention (after an average of three weeks), post-intervention (after an average of six weeks)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

November 20, 2018

Primary Completion (Actual)

August 6, 2020

Study Completion (Actual)

August 6, 2020

Study Registration Dates

First Submitted

November 13, 2018

First Submitted That Met QC Criteria

November 21, 2018

First Posted (Actual)

November 26, 2018

Study Record Updates

Last Update Posted (Actual)

October 23, 2020

Last Update Submitted That Met QC Criteria

October 22, 2020

Last Verified

October 1, 2020

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Stress_DEP

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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