Analysis of Cortical Excitability in Neuropathic Pain

NCT ID: NCT00789347

Last Updated: 2010-04-02

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

UNKNOWN

Total Enrollment

80 participants

Study Classification

OBSERVATIONAL

Study Start Date

2008-10-31

Study Completion Date

2011-10-31

Brief Summary

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The purpose of this study is to determine whether patients with neuropathic pain has abnormal excitability in somatosensory cortex and abnormal sensory-motor connections.

Detailed Description

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There are several brain areas responsible for neuropathic pain reported in functional image studies, including primary sensory cortex, insula, and anterior cingulate gyrus. However, it is few informations about the functional status of these areas. Besides, the reason of the individual variability about the developement of neuropathic pain remains unknown. It is lack of satisfactory explanation about why some people developed neuropathic pain in certain diseased situation (for example, type 2 diabetes), while others do not.

We hypothesis that patients with neuropathic pain has abnormal cortical excitability and plasticity in certain brain area. Therefore developed neuropathic pain certain diseased condition while others not. Therefore, we will use multimodal electrophysiology tools,such as transcranial magnetic stimulation, peripheral nerve stimulation, and contact heat evoke potential to monitor the cortical excitability and plasticity non-invasively.

Conditions

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Neuropathic Pain Cortical Excitability

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

CROSS_SECTIONAL

Study Groups

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1

Healthy volunteers

No interventions assigned to this group

2

Patient with neuropathic pain

No interventions assigned to this group

3

patients without neuropathic pain

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

* Healthy volunteers
* patients with pain resulted from dysfunction of peripheral or central nervous system
* the disorders of peripheral nerves are diagnosed by nerve conduction study, quantitative sensory test, quantification of skin innervation or contact heat evoked potentials
* lesion of central nervous system should be confirmed by neuroimage.

Exclusion Criteria

* previous history of epilepsy, seizure disorders or major head injury
* previous brain surgery or intracranial metalic implant
* implanted devices as cardiac pacemaker
* pregnant subjects
* patient with severe cardiac or pulmonary disease who potentially cannot tolerate stress
Minimum Eligible Age

20 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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National Taiwan University Hospital

OTHER

Sponsor Role lead

Responsible Party

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National Taiwan University, Department of Neurology

Principal Investigators

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Ming-Kai Pan, M.D.

Role: STUDY_DIRECTOR

National Taiwan University Hospital, Department of Neurology

Chi-Chao Chao, M.D.

Role: STUDY_DIRECTOR

National Taiwan University Hospital, Department of Neurology

Sung-Tsang Hsieh, M.D. PhD

Role: PRINCIPAL_INVESTIGATOR

National Taiwan University Hospital, Department of Neurology

Locations

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National Taiwan University Hospital

Taipei, , Taiwan

Site Status RECRUITING

Countries

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Taiwan

Central Contacts

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Ming-Kai Pan, M.D.

Role: CONTACT

886-2-23123456 ext. 9803397

Ch-Chao Chao, M.D.

Role: CONTACT

886-2-23123456 ext. 9801967

Facility Contacts

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Ming-Kai Pan, M.D.

Role: primary

886-2-23123456 ext. 9803397

Chi-Chao Chao, M.D.

Role: backup

886-2-23123456 ext. 9801967

Other Identifiers

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200806061R

Identifier Type: -

Identifier Source: org_study_id

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