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Examining How Motor Rehabilitation Promotes Brain Reorganization Following Stroke, an MRI Study

This study is ongoing, but not recruiting participants.
Sponsor:
ClinicalTrials.gov Identifier:
NCT01725919
First Posted: November 14, 2012
Last Update Posted: July 18, 2017
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by (Responsible Party):
Lynne Gauthier , PhD, The Ohio State University
November 6, 2012
November 14, 2012
July 18, 2017
July 2012
June 30, 2017   (Final data collection date for primary outcome measure)
Brain structure [ Time Frame: Participants will be followed for 4-6 weeks. Change in brain structure at mid-treatment (after 1 week of CI therapy), post-treatment (after 2 weeks of therapy), and at 2-week follow-up will be measured. ]
Assessed via dynamic susceptibility contrast MRI, diffusion tensor MRI, MRI-based myelin mapping, T1-weighted MRI
Same as current
Complete list of historical versions of study NCT01725919 on ClinicalTrials.gov Archive Site
Motor function [ Time Frame: Participants will be followed for 4-6 weeks. Change in motor function at mid-treatment (after 1 week of CI therapy), post-treatment (after 2 weeks of therapy), and at 2-week follow-up will be measured. ]
Assessed via Wolf Motor Function Test, Action Research Arm Test, Motor Activity Log
Same as current
Not Provided
Not Provided
 
Examining How Motor Rehabilitation Promotes Brain Reorganization Following Stroke, an MRI Study
Examining Mechanisms of Neuroplasticity Following Motor Rehabilitation in Stroke
Constraint-induced movement therapy (CI therapy) is a highly efficacious treatment for residual motor disability in chronic stroke. Its effectiveness is believed to be due, at least in part, to the therapy's ability to aid the brain in "rewiring itself." For example, CI therapy produces increases in the amount of grey matter (the parts of the brain where neuron cell bodies are most closely clustered) in certain areas of the human brain (Gauthier et al., 2008). The cellular and molecular mechanisms that are responsible for this increase in grey matter volume are not known, however. Thus, it is unclear how the therapy helps brains "rewire" themselves. This study aims to better understand the timecourse and cellular/molecular nature of brain changes during CI therapy. Because there is currently no way to directly measure cellular/molecular changes in the brain noninvasively, this study will infer what is happening on a microstructural level using new MRI techniques (three dimensional pictures of the brain). For example, by charting the timecourse of grey matter changes during CI therapy, and cross-comparing this to what is known about the timecourses of different cellular/molecular processes, the investigators can gain a greater understanding of what cellular processes may be responsible for increases in grey matter. The investigators will gain additional information about which cellular processes are important for rehabilitation-induced improvement by measuring larger-scale changes (e.g., amount of blood flow through different brain areas) that accompany cellular changes. The investigators are hopeful that by better understanding how CI therapy can change the brain, the effectiveness of rehabilitation can be improved upon. For example, insight into the mechanisms of rehabilitation-induced brain change may suggest particular drug targets to increase brain plasticity. This study will help us better understand how the brain repairs itself after injury.
Not Provided
Interventional
Not Provided
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
  • Stroke
  • Hemiparesis
Behavioral: CI therapy
constraint induced movement therapy
  • Experimental: Immediate CI therapy
    Intervention: Behavioral: CI therapy
  • Active Comparator: Delayed CI therapy
    Intervention: Behavioral: CI therapy
Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Active, not recruiting
31
June 2020
June 30, 2017   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • Males or females 18 years of age and over
  • Experienced a stroke resulting in mild to moderate hemiparesis (some residual motor function, e.g. able to pick up a washcloth placed flat on a table) at least 6 months prior to enrollment. Suggested active range of motion criteria for this level of impairment include: 45° shoulder abduction and flexion, 20° elbow extension, 20° wrist extension, and 10° extension of thumb and fingers.
  • Preserved ability to comprehend and participate in basic elements of the therapy

Exclusion Criteria:

  • Concurrent participation in other experimental trials for treatment of motor dysfunction
  • Having received botulinum toxin injection within the past 3 months
  • Previous intensive rehabilitation in the chronic phase post-stroke
  • Serious/uncontrolled medical problems (e.g., dementia, severe pain, end-stage or degenerative diseases)
  • Kidney disease as evidenced by eGFR<60
  • Anemia
  • Sickle cell disease
  • History of kidney transplant
  • Other evidence/history of renal disease
  • Pregnancy
  • Implanted metallic parts of implanted electronic devices, including pacemakers, defibrillators, aneurism clip or implant medication pump that are MRI incompatible
  • An implanted brain stimulator
  • Permanent tattoo (e.g., eye liner) containing metallic coloring
  • Claustrophobia precluding MRI
Sexes Eligible for Study: All
18 Years and older   (Adult, Senior)
No
Contact information is only displayed when the study is recruiting subjects
United States
 
 
NCT01725919
60034699
No
Not Provided
Not Provided
Lynne Gauthier , PhD, The Ohio State University
Lynne Gauthier , PhD
Not Provided
Principal Investigator: Lynne V Gauthier, Ph.D. The Ohio State U.
Ohio State University
July 2017

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP