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Effects of Drugs on Cerebral Blood Flow in Patients With Mood Disorders

This study has been completed.
Information provided by:
National Institutes of Health Clinical Center (CC) Identifier:
First received: November 3, 1999
Last updated: March 3, 2008
Last verified: January 2000

Positron Emission Tomography (PET) is a technique used to investigate the functional activity of the brain. The PET technique allows doctors to study the normal biochemical and metabolic processes of the central nervous system of normal individuals and patients with neurologic illnesses without physical / structural damage to the brain.

When a region of the brain is active, it uses more fuel in the form of oxygen and sugar (glucose). As the brain uses more fuel it produces more waste products, carbon dioxide and water. Blood carries fuel to the brain and waste products away from the brain. As brain activity increases blood flow to and from the area of activity increases also. Knowing these facts, researchers can use radioactive chemicals (H215O) and PET scans to observe what areas of the brain are receiving more blood flow.

Patients diagnosed with mood disorders and healthy volunteers will receive positron emission tomographic (PET) scans with H215O while doing simple tasks. Patients will continue to receive scans while in different mood states and while taking different medications. Patients eligible for this study will be participating in other research studies measuring other clinical and biochemical parameters (mood and anxiety ratings, medication responses, and psychological test results). Information gathered from H215O PET scans measuring blood flow to specific brain areas will be compared to the data gathered from other studies.

Objectives of this study are;

  1. To determine differences in blood flow to the brain of patients with mood disorders compared to healthy volunteers.
  2. To determine differences in blood flow to the brain of patients with subtype mood disorders (such as unipolar versus bipolar) compared to healthy volunteers.

2. To determine changes in blood flow to the brain of patients with mood disorders who experience spontaneous changes in symptoms

3. To determine changes in blood flow to the brain of patients with mood disorders who receive various kinds of therapy (medication, transcranial magnetic stimulation, etc.)

4. To determine if blood flow to specific areas of the brain can be used to predict how patients will respond to certain types of therapy

5. To compare blood flow changes with various other clinical and biochemical parameters.

Mood Disorders

Study Type: Observational
Official Title: Regional Cerebral Blood Flow Correlates of Spontaneous and Drug-Induced Clinical Changes in Mood Disorders

Resource links provided by NLM:

Further study details as provided by National Institutes of Health Clinical Center (CC):

Estimated Enrollment: 170
Study Start Date: October 1994
Estimated Study Completion Date: January 2001
Detailed Description:
Patients with mood disorders and healthy volunteers will receive positron emission tomographic (PET) scans with H(2)(15)O to measure global and local differences in cerebral blood flow during a passive introspection task. Patients receive repeated scans while in different mood states and while participating in placebo controlled therapeutic trials as described by separate protocols. Global and regional cerebral blood flow is correlated with data obtained from participation in other protocols, which include clinical (life charting course of illness parameters, mood and anxiety ratings, medication response data, and psychological test performance) and biochemical (levels of medications, monoamines and peptides in the blood and cerebrospinal fluid) measures.

Ages Eligible for Study:   Child, Adult, Senior
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Healthy volunteers and patients who satisfy DSM-III-R criteria for mood disorders between ages of 18 and 75 will be invited to participate provided that the following criteria are fulfilled:

No history of medical illness (including seizures, endocrine, hepatic, renal, cardiac, allergic, infectious, autoimmune, or neurological disorders) that would contraindicate participation.

No evidence of co-existing major illness after undergoing complete psychiatric (including SADS-LA interview), medical, neurological, and laboratory examinations (including EEG, EKG, renal and liver function tests, serum electrolytes, urinalysis, HIV, hepatitis B, syphilis).

Negative pregnancy test for women of child bearing potential.

Women must not be breast feeding.

Negative HIV test, as we are studying primary mood and anxiety disorders and not disorders secondary to HIV infection.

Negative urine comprehensive drug screen and have not had alcohol or substance abuse problems in last 12 months.

  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00001478

United States, Maryland
National Institute of Mental Health (NIMH)
Bethesda, Maryland, United States, 20892
Sponsors and Collaborators
National Institute of Mental Health (NIMH)
  More Information

Publications: Identifier: NCT00001478     History of Changes
Other Study ID Numbers: 950016
Study First Received: November 3, 1999
Last Updated: March 3, 2008

Keywords provided by National Institutes of Health Clinical Center (CC):
Cerebral Blood Flow
Mood Disorders
Positron Emission Tomography

Additional relevant MeSH terms:
Mood Disorders
Pathologic Processes
Mental Disorders processed this record on May 22, 2017