MR Spectroscopy as a Diagnostic and Outcome Measure in Pain and SCI

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

94 participants

Study Classification

OBSERVATIONAL

Study Start Date

2007-10-31

Study Completion Date

2010-11-30

Brief Summary

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The goal of this study is to compare the changes that occur in sensation and chemical properties of the brain following SCI between individuals that experience chronic pain and those that do not, and between those with SCI and the able-bodied.

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Detailed Description

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This study investigates the differences in certain neurochemicals present in areas of the brain linked to pain processing in people with SCI and neuropathic pain, in people with SCI but no pain, and in able-bodied persons. We will also investigate the relationship between these concentrations of neurochemicals and different aspects of chronic neuropathic pain, including the intensity of pain, quality of life issues, sensitivity changes in areas of the body that are both painful and non-painful, and neurological status.

Conditions

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Spinal Cord Injury Hyperalgesia, Secondary Hyperalgesic Sensations

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

PROSPECTIVE

Study Groups

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Group 1

Spinal cord injured with chronic central neuropathic pain.

No interventions assigned to this group

Group 2

Spinal cord injured without chronic central neuropathic pain.

No interventions assigned to this group

Group 3

Able-bodied without history of chronic pain of any type

No interventions assigned to this group

Group 4

Traumatically Brain Injured with a history of pain that onset after their TBI

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

1. SCI and neuropathic pain:

* fluent in English
* incomplete or complete traumatic SCI
* the injury must have occurred at least 2 years prior to entering the study
* the injury level must be above L1 and the subjects must have evidence of preserved distal cord functions (lower extremity reflexes and bulbocavernosus or anal wink reflexes)
* must have experienced chronic neuropathic pain at or below the level of injury for a minimum of six months
* must have moderately severe or greater neuropathic pain
* must be able to attend three sessions ranging from 2 to 6 hours over a period of 4 to 5 weeks
2. SCI and no neuropathic pain:

\- same as a., but participants in this group must NOT have unremitting moderate-severe pain and there will only be two sessions ranging from 2 to 6 hours over a period of 1 to 2 weeks
3. Able-bodied control subjects:

* fluent in English
* no history of chronic pain conditions
* no substantial brain or body injury
* must be able to attend two sessions ranging from 2 to 6 hours over a period of 1 to 2 weeks

Exclusion Criteria

* current pregnancy or women who are contemplating pregnancy
* recent (one-year) history of alcohol or drug abuse
* known intra-cerebral pathology or epilepsy
* MRI findings indicative of intra-cerebral pathology
* significant post-traumatic encephalopathy from head trauma sustained at SCI or cognitive impairment indicative of traumatic brain injury
* current diagnosis of DSM-IV Axis I disorder
* inability to meet the MRI screening requirements (including, but not limited to, the presence of a pacemaker or other electronic devices, prosthesis, artificial limb or joint, shunt, some metal rods, some tattoos, or moderate to severe claustrophobia or anxiety)

Minimum Eligible Age

18 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes