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Rapid Antidepressant Effects of Yohimbine in Major Depression

NCT00078715 · Status: COMPLETED · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 11

Last updated 2019-08-29

Study results available
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Summary

This study examines if Yohimbine, when given during the sleep cycle, will improve symptoms of depression within a matter of hours.

Purpose: This study will examine whether the drug yohimbine, given at a specific time during the sleep cycle, produces chemical changes in the brain similar to those that occur with sleep deprivation. It will also see if yohimbine can induce rapid (next day) antidepressant effects in patients with major depression. Total sleep deprivation for 36 hours improves mood in most patients with major depression in a matter of hours, but the response is usually short-lived. Understanding the chemical changes that occur in the body during sleep deprivation may help in the development of a rapidly acting antidepressant.Patients with major depressive disorder between 18 and 65 years of age may be eligible for this study. Candidates are screened with a medical and psychiatric history, physical examination, electrocardiogram, and blood and urine tests. Participants are hospitalized at the NIH Clinical Center for the study, as follows: Drug-free period: Patients are tapered off their anti-depression medications and remain drug-free for 1 week before beginning study phase 1. Study phase 1: Patients undergo sleep deprivation for 36 hours. Those whose depression improves with sleep deprivation initially and then worsens continue to phase 2. The day after sleep deprivation, patients undergo a lumbar puncture (spinal tap). For this test, a local anesthetic is given and a needle is inserted in the space between the bones in the lower back where the cerebrospinal fluid circulates below the spinal cord. A small amount of fluid is collected through the needle. Study phase 2: Patients spend 1 night in the sleep lab. A catheter (plastic tube) is placed in a vein in each arm-one to give yohimbine and the other to draw blood samples. A small monitor cuff is placed on a finger to measure the patient's blood pressure and blood oxygen levels during the night. While asleep, the patient receives a dose of yohimbine or placebo, given over 3 minutes. A lumbar puncture is done the following morning. Patients receive no medications for 6 days, and then the sleep lab procedure is repeated. Patients who received yohimbine in the previous experiment are switched to placebo, and those who were given placebo are switched to yohimbine.

Conditions

  • Depression, Involutional
  • Major Depresssion

Interventions

DRUG

Yohimbine hydrochloride

Participants receive yohimbine 0.125 mg/kg administered over 3 minutes during REM sleep.

DRUG

Placebo

Participants receive an inactive equivalent of yohimbine 0.125 mg/kg administered over 3 minutes during REM sleep.

Sponsors & Collaborators

  • National Institute of Mental Health (NIMH)

    lead NIH

Principal Investigators

  • Carlos A Zarate, M.D. · Experimental Therapeutics and Pathophysiology Branch, DIRP, NIMH

Study Design

Allocation
RANDOMIZED
Purpose
OTHER
Masking
QUADRUPLE
Model
CROSSOVER

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2004-03-31
Primary Completion
2009-08-31
Completion
2009-08-31

Countries

  • United States

Study Locations

More Related Trials

Entities

Drugs

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00078715 on ClinicalTrials.gov