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Brain Circuits in Schizophrenia and Smoking

This study is currently recruiting participants.
See Contacts and Locations
Verified November 2015 by MPRC, University of Maryland
National Institute on Drug Abuse (NIDA)
Information provided by (Responsible Party):
MPRC, University of Maryland Identifier:
First received: August 28, 2011
Last updated: April 12, 2016
Last verified: November 2015
The principle aim of the project is to identify the key brain circuits associated with smoking and especially smoking in high risk population. The investigators hope that the study will provide concrete biomarkers for new therapeutic development and ultimately reducing the smoking related health burden.

Schizophrenia Schizoaffective Disorder Schizophreniform Disorder

Study Type: Observational
Study Design: Time Perspective: Prospective
Official Title: Brain Circuits in Schizophrenia and Smoking

Resource links provided by NLM:

Further study details as provided by MPRC, University of Maryland:

Primary Outcome Measures:
  • Nicotine addiction severity is associated with abnormal functional connectivity as measured by fMRI,compared with nonsmokers.Schizophrenia pts are assoc with add'l functional connectivity impairment compared with controls [ Time Frame: 12-15 hours ]

Secondary Outcome Measures:
  • Symptom and Cognition rating [ Time Frame: 1-2 hours ]

Biospecimen Retention:   Samples With DNA
  • Whole Blood
  • Saliva

Estimated Enrollment: 800
Study Start Date: January 2011
Estimated Study Completion Date: January 2020
Estimated Primary Completion Date: January 2020 (Final data collection date for primary outcome measure)
smokers and nonsmokers
smokers and nonsmokers

Detailed Description:

There are several studies and hypotheses to be tested. This project includes (1) a cross-sectional study design that measures brain imaging, smoking, clinical diagnosis and symptoms, cognitive functional assessments, distress tolerance, and genetic information, which is also the baseline for the longitudinal study; and (2) a longitudinal study design for smoking cessation option for 1 year in some smokers and a longitudinal follow-up for all available subjects.

During the baseline portion of the study, subjects are expected to complete clinical symptom assessments, a computer challenge task to measure distress tolerance, MRI scan, role-play test to measure cognitive and functional abilities, and blood draw. Subjects who are eligible will participate in the longitudinal follow-up study where the research team will call subjects regularly regarding smoking related information (smoking risk and treatment options).


Ages Eligible for Study:   12 Years to 80 Years   (Child, Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Smokers, nonsmokers, schizophrenia patients, family members

Inclusion Criteria:

  • Male and Female between ages 12-above (clinical assessments and blood draw only above 62)
  • Ability to give written assent (age below 18)
  • Ability to give written informed consent (age 18 or above)
  • Individuals fulfilled other criteria but over age 62, with major medical illnesses, significant alcohol or other drug use, or unable to undergo MRI may participate in clinical assessments and blood draw if his/her participation forms a family unit (i.e., if at least one of the family member has participated).
  • Subjects above age 62 will not participate in MRI measurements although they may still participate in clinical assessments and blood draw.

Exclusion Criteria:

  • Inability to sign informed consent/assent
  • For patient participants, Evaluation to Sign Consent (ESC) below 10.
  • Any major medical illnesses that may affect normal brain functioning. Examples of these conditions include, but not limited to, stroke, repeated seizure, history of significant head trauma, CNS infection or tumor, other significant brain neurological conditions.
  • Significant alcohol or other drug use (substance dependence within 6 months or substance abuse within 1 month) other than nicotine or marijuana dependence.
  • Woman who are pregnant (child-bearing potential but not on contraceptive and missing menstrual period; or by self-report; or by positive urine pregnancy test before MRI)
  • Can not refrain from using alcohol and/or marijuana 24 hours or more prior to experiments.
  • For MRI, unable to undergo MRI scanning due to metallic devices or objects (cardiac pacemaker or neurostimulator, some artificial joints, metal pins, surgical clips or other implanted metal parts) or claustrophobic to the scanner
  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: NCT01425684

Contact: L.Elliot Hong, M.D. 410-402-6828

United States, Maryland
Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine Recruiting
Baltimore, Maryland, United States, 21228
Contact: Caroline Silva, MSW    410-402-6126   
Sponsors and Collaborators
University of Maryland
National Institute on Drug Abuse (NIDA)
Principal Investigator: L.Elliot Hong, M.D. Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine
  More Information

Responsible Party: MPRC, Associate Professor, University of Maryland Identifier: NCT01425684     History of Changes
Other Study ID Numbers: HP-00045716
R01DA027680 ( US NIH Grant/Contract Award Number )
Study First Received: August 28, 2011
Last Updated: April 12, 2016
Individual Participant Data  
Plan to Share IPD: No

Keywords provided by MPRC, University of Maryland:

Additional relevant MeSH terms:
Psychotic Disorders
Pathologic Processes
Schizophrenia Spectrum and Other Psychotic Disorders
Mental Disorders processed this record on June 23, 2017