Glutamatergic Adaptation to Stress as a Mechanism for Anhedonia and Treatment Response With Ketamine
Emory University
Summary
The main purpose of this study is to investigate the effects of ketamine on decision-making and emotion processing in a sample of individuals diagnosed with Major Depressive Disorder (MDD).
Description
The main purpose of this study is to understand the effects of sub-anesthetic ketamine doses on varying functional domains of depression such as anhedonia, decision-making, and emotion processing in subjects diagnosed with Major Depressive Disorder (MDD). The study will evaluate these effects using a combination of questionnaires, neuroimaging techniques, and behavioral tasks. The clinical trial portion will only include subjects with MDD (Major Depressive Disorder). A separate group of healthy controls, n=60, will be invited to only complete a behavioral/interview session and one neuroimaging…
Eligibility
- Age range
- 18–65 years
- Sex
- All
- Healthy volunteers
- Yes
Inclusion Criteria: MDD Patients: * willing and able to give written informed consent * men or women, 18-65 years of age * primary diagnosis of DSM-V MDD, current, as diagnosed by the SCID-I * score of ≥20 on the Beck Depression Inventory, which will include patients characterized as having "moderate/severe" (20-28) or "very-severe" (29-63) depressive symptoms * off all antidepressant therapy for at least 8 weeks prior to the baseline visit Healthy Controls: * willing and able to give written informed consent * men or women, 18-65 years of age Exclusion Criteria: MDD Patients: * history…
Interventions
- DrugKetamine
A single intravenous (IV) infusion of ketamine calculated at 0.5mg/kg through an indwelling catheter over a 40-100min period.
- OtherPlacebo
A single intravenous (IV) infusion of saline through an indwelling catheter over a 40-100min period.
Location
- Emory UniversityAtlanta, Georgia