Parallel Effects of Schizophrenia and N-methyl-D-aspartate (NMDA) Antagonism

Completed · Phase 1

Conditions studied: Schizophrenia

In brief

This study investigates the common features of electrophysiological measures in schizophrenia and effects of NMDA antagonist ketamine in healthy volunteers.

Key facts

Study ID

NCT02675530

Run by

Yale University

People needed

33

Starts

2007-12-01

Expected to finish

2011-12-01

Last updated by the study team

2016-02-05

Who can join

Age: 21 and older, up to 45. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Male or female
• 21-45 years old
• Deemed healthy by the Structured Clinical Interview for DSM-NP (SCID-NP) and collateral information. Subjects will need to provide the name of a person, preferably a family member, whom the research team can contact to corroborate information.

You may not qualify if…

• Lifetime diagnosis of DSM-IV substance dependence (except caffeine and nicotine).
• Substance abuse, as per clinical judgment, in the past 1 year.
• Current or past DSM-IV Axis-I diagnosis.
• A history of significant medical/neurological disease such as cardiac, thyroid, renal, hepatic or neurological. Unstable medical condition based on EKG, vital signs, physical examination and laboratory work-up.
• A hearing deficit greater than 30 dB in both ears detected using a Welch-Allyn audioscope (500, 1000, 2000 and 4000 Hz threshold will be evaluated) at screening.
• Major current or recent (<6 weeks) stressors.
• History of counseling, except if counseling was for a life circumstance disorder (e.g., bereavement, divorce) or in the opinion of the investigator, is not clinically significant.
• Lifetime history of treatment with any psychotropic medications for > 1 month duration suggestive of psychiatric illness.
• Current or past Axis I diagnosis of schizophrenia or bipolar disorder in first-degree relatives.
• Any medication that could interfere with either the safety of the study and/or the outcome measures.
• Use of any illicit substances in the 4 weeks prior to beginning study participation.
• Any history indicating learning disability, mental retardation, or attention deficit disorder.
• History of head injury with loss of consciousness greater than fifteen minutes.
• Any other condition or medication, which in the opinion of the investigator would preclude participation in the study.
• Non-English speaking.
• Known sensitivity to ketamine.
• Subjects for the Schizophrenia experiment:
• Inclusion Criteria for control subjects:
• Male or female
• 21-45 years old
• No past or present Axis I diagnosis, as determined by the SCID-NP
• Exclusion Criteria for control subjects:
• Lifetime diagnosis of DSM-IV substance dependence (except caffeine and nicotine).
• Substance abuse, as per clinical judgment, in the past 1 year
• A history of significant medical/neurological disease such as cardiac, thyroid, renal, hepatic or neurological.

Where it is running

• VHA CT — West Haven, Connecticut, United States

Full record on ClinicalTrials.gov

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