Depression Clinical Trial
— DASHOfficial title:
Learning, Neural Signaling of Cortisol, and Early Adversity in Depression
Verified date | June 2017 |
Source | University of Wisconsin, Madison |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
The stress-related hormone cortisol has been studied in depression for decades. However,
relatively little is known about the role of cortisol in psychological features of
depression. Basic research shows that cortisol modulates brain processes that are highly
relevant to depression (especially the neural substrates of negative biases in learning and
memory formation). However, very few studies have directly examined the effects of cortisol
on neural circuitry of learning in depressed humans. In addition, the effects of cortisol on
the neural substrates of learning differ for males and females. The toll of depression is
especially high in women, who are roughly twice as likely as men to suffer from depression.
Thus, the primary goal of this project is to investigate the effects of cortisol on the
neural circuitry of learning in depressed women.
A secondary goal is to investigate whether early life adversity moderates cortisol's effects
on the neural circuitry of learning. Animal data suggests that early life adversity causes
life-long biases toward learning in threatening conditions associated with elevated
cortisol. In addition, new data from humans suggests that alterations in cortisol
traditionally ascribed to depression may stem in part from early adversity rather than
depression per se. Thus, this study will examine effects of cortisol on the neural circuitry
of learning in depressed and healthy women with and without history of early life adversity.
The study will use pharmacological manipulation of cortisol levels (compared to placebo)
during measurement of brain activity at rest and during memory encoding of emotional and
neutral stimuli. The study will also measure whether cortisol alters the negative biases in
emotional memory often seen in depression. In doing so, the study will examine the role of
cortisol in neural networks associated with emotional learning that are often implicated in
depression.
Medications that target cortisol receptors in the brain may be beneficial in the treatment
of depression. However, this knowledge has yet to inform clinical practice, and mechanisms
of action of these medications are not well understood. This project is significant because
it provides the prerequisite knowledge (and develops a paradigm) that can be used in the
future in the development of more effective targeted intervention strategies.
Status | Completed |
Enrollment | 85 |
Est. completion date | May 19, 2016 |
Est. primary completion date | May 19, 2016 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | Female |
Age group | 18 Years to 45 Years |
Eligibility |
Inclusion Criteria: - Female - 18 to 45 years of age - English fluency - Able to lie still on their back for up to 90 minutes - Willing and able to return for all visits - Able to provide written informed consent prior to participation - In good physical health as determined on basis of medical history - If a nicotine user, able to refrain from nicotine use for 2 hours prior to fMRI scanning and throughout the scan visits - Additional criteria for never-depressed participants: Free of current or past Diagnostic and Statistical Manual (DSM) IV diagnoses of Major Depressive Disorder (MDD), Dysthymia, or other Depressive Disorder. Never-depressed participants may have past or current psychopathology other than depressive disorders that does not cause significant impairment in functioning and that would not interfere with study participation, be exacerbated by study participation, or introduce scientific difficulties, for example, history of complicated bereavement or history of time-limited alcohol abuse that does not represent a lasting substance use disorder - Additional criteria for participants with MDD: Meet DSM-IV criteria for MDD (single or recurrent) as determined by a Structured Clinical Interview for DSM-IV (SCID) - Additional criteria for depression-prone participants: Does not meet criteria for current MDD, but meets at least one of the following requirements: 1. Meets DSM-IV criteria for past MDD (single or recurrent) as determined by a SCID interview 2. Meets DSM-IV criteria for Depressive Disorder Not Otherwise Specified (NOS) 3. Meets DSM-IV criteria for Dysthymia 4. Has a Beck Depression Inventory (BDI) score of 14 or higher Exclusion Criteria: - Current use of any anti-depressant or psychotropic medication while participating in Visits 1-6 and Home Saliva Collection; treatment with electroconvulsive therapy (ECT) within the past 3 months; use of any anti-depressant within 14 days of participation, fluoxetine within 30 days of participation, or any other psychotropic drug within a timeframe based on the half-life of the particular drug - Using hormonal contraceptives while participating in Visits 1-6 and Home Saliva Collection - Using any medication that affects central nervous system (CNS) function for 2-4 weeks prior to testing and during participation in Visits 1-6 and Home Saliva Collection - Using any illicit drug for 4 weeks prior to testing and during participation in Visits 1-6 and Home Saliva Collection - Using any steroid, anti-histamine, nasal spray (which includes corticosteroids), or topical hydrocortisone cream/gel that affects the hypothalamic-pituitary-adrenal (HPA) axis for 2-4 weeks prior to testing and throughout the duration of the study - History of seizures, diabetes, hypertension, neurological problems, and/or cardiac problems - Metallic implants (i.e., prostheses, shrapnel, or aneurysm clips) or electronic implants (i.e., cardiac pacemakers) that are contraindicated for MRI - Any clinically significant abnormalities on medical history or physical exam - Currently pregnant, trying to become pregnant, breastfeeding, within a six-month window following pregnancy or breastfeeding, sexually active without an acceptable method of birth control (e.g., abstinence, male vasectomy, female sterilization, condom) - Post-menopausal and peri-menopausal women - Women with highly irregular menstrual cycles (e.g., more than 60 days between periods or less than 14 days between periods) - Individuals who work the "night shift" (e.g., between the hours of 11 pm and 7 am) will be excluded due to potential variability in cortisol levels determined by sleep schedule - Heavy nicotine user (e.g., smokes more than a pack/day) - Unable to fit comfortably in the MRI simulator and/or scanner (e.g., BMI greater than approx. 38) - Weight greater than approx. 250 lbs - Lifetime history of mania or psychosis - At risk for suicide as determined by a clinical interview - Gross impairment in functioning - Claustrophobia - Frank Axis I or Axis II psychopathology that would interfere with study participation, become exacerbated by study participation, or introduce scientific difficulties |
Country | Name | City | State |
---|---|---|---|
n/a |
Lead Sponsor | Collaborator |
---|---|
University of Wisconsin, Madison | Brain & Behavior Research Foundation, National Institute of Mental Health (NIMH) |
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Emotional Memory after Cortisol Administration | Memory for emotional pictures encoded during the cortisol administration MRI scan | 15 minute memory assessment that takes place 2 days after cortisol administration MRI scan visit | |
Secondary | Neural Function | MRI | 90 minute scan session |
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