Central Sensitization in Chronic Whiplash Patients

NCT ID: NCT03005691

Last Updated: 2016-12-29

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

30 participants

Study Classification

OBSERVATIONAL

Study Start Date

2017-01-31

Study Completion Date

2017-05-31

Brief Summary

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The purpose of this study is to determine whether the metabolite concentrations within the anterior cingulate cortex and periaqueductal gray matter predict the intensity and interference of neuropathic pain after the development of chronic whiplash syndrome.

Detailed Description

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Persistent chronic pain is a common symptom of whiplash leading to reduced quality of life. Little information is available regarding changes in brain processing areas and change in central sensitization to noxious input during the chronic phase of whiplash. Metabolite concentrations in the anterior cingulate cortex and periaqueductal gray matter may be predictors of neuropathic pain and these changes may explain the development of central sensitization in people with chronic whiplash.

Until now, there is not any study that show this approach.

Conditions

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Chronic Pain

Keywords

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metabolite central sensitization whiplash

Study Design

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Observational Model Type

COHORT

Study Time Perspective

CROSS_SECTIONAL

Study Groups

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Whiplash-Pain

Subjects with chronic whiplash syndrome and pain. The inclusion criteria for pain include the presence of daily pain during the previous 8 weeks. Specifically, pain will be diagnosed based on the pain intensity measured on the 0 to 10 numerical rating scale. The minimum will be 2 points. Subjects will be recruited between the 4 months until 2 years after the whiplash.

Spectroscopy

Intervention Type RADIATION

Spectroscopy is a noninvasive method to assess brain chemistry. The signal of the hydrogen atom attached to a certain molecule or metabolite has a particular frequency associated with a given metabolite. The utility of Spectroscopy is based on the fact thet the nuclei of atoms have magnetic properties that can be used to obtain chemical information regarding both the type of molecule and it is concentration.

The subjects will be scanned on a 3-T Siemens system and an 12-channel phased-array coil will be used to provide an optimum signal-to-noise ratio for spectroscopy data.

Questionnaires

Intervention Type OTHER

Questionnaires are important to assess the chronic pain and their impact in the quality of life. For this reason, we will assess the Brief Pain Inventory (BPI), it is used to evaluate the subject's perception of pain severity and its interference. Moreover, we will assess neuropathic pain symptoms with the NPSI to detect paresthesia/dysaesthesia, evoked pain and paroxysmal pain. The catastrophizing score will be measured with the Pain Catastrophizing Helplessness Subscale. Also,we will assess the disability after whiplash using the Neck Disability Index.

Conditioned Pain Modulation

Intervention Type PROCEDURE

Conditioned Pain Modulation over the tenar eminence. The test will be a heat tonic stimulus which evoke a 3-pain intensity. The conditioning stimulus will be a cold water immersion (12ºC)

Whiplash-no Pain

Subjects with chronic whiplash syndrome and pain. The inclusion criteria for pain include the ausence of daily pain during the previous 8 weeks. Specifically, pain will be diagnosed based on the pain intensity measured on the 0 to 10 numerical rating scale. The maximun will be 2 points. Subjects will be recruited between the 4 months until 2 years after the whiplash.

Spectroscopy

Intervention Type RADIATION

Spectroscopy is a noninvasive method to assess brain chemistry. The signal of the hydrogen atom attached to a certain molecule or metabolite has a particular frequency associated with a given metabolite. The utility of Spectroscopy is based on the fact thet the nuclei of atoms have magnetic properties that can be used to obtain chemical information regarding both the type of molecule and it is concentration.

The subjects will be scanned on a 3-T Siemens system and an 12-channel phased-array coil will be used to provide an optimum signal-to-noise ratio for spectroscopy data.

Questionnaires

Intervention Type OTHER

Questionnaires are important to assess the chronic pain and their impact in the quality of life. For this reason, we will assess the Brief Pain Inventory (BPI), it is used to evaluate the subject's perception of pain severity and its interference. Moreover, we will assess neuropathic pain symptoms with the NPSI to detect paresthesia/dysaesthesia, evoked pain and paroxysmal pain. The catastrophizing score will be measured with the Pain Catastrophizing Helplessness Subscale. Also,we will assess the disability after whiplash using the Neck Disability Index.

Conditioned Pain Modulation

Intervention Type PROCEDURE

Conditioned Pain Modulation over the tenar eminence. The test will be a heat tonic stimulus which evoke a 3-pain intensity. The conditioning stimulus will be a cold water immersion (12ºC)

Non-injured

Subjects without whiplash syndrome. The inclusion criteria are defined as a absence of previous or actual symptoms or signs of neck pain.

Spectroscopy

Intervention Type RADIATION

Spectroscopy is a noninvasive method to assess brain chemistry. The signal of the hydrogen atom attached to a certain molecule or metabolite has a particular frequency associated with a given metabolite. The utility of Spectroscopy is based on the fact thet the nuclei of atoms have magnetic properties that can be used to obtain chemical information regarding both the type of molecule and it is concentration.

The subjects will be scanned on a 3-T Siemens system and an 12-channel phased-array coil will be used to provide an optimum signal-to-noise ratio for spectroscopy data.

Questionnaires

Intervention Type OTHER

Questionnaires are important to assess the chronic pain and their impact in the quality of life. For this reason, we will assess the Brief Pain Inventory (BPI), it is used to evaluate the subject's perception of pain severity and its interference. Moreover, we will assess neuropathic pain symptoms with the NPSI to detect paresthesia/dysaesthesia, evoked pain and paroxysmal pain. The catastrophizing score will be measured with the Pain Catastrophizing Helplessness Subscale. Also,we will assess the disability after whiplash using the Neck Disability Index.

Conditioned Pain Modulation

Intervention Type PROCEDURE

Conditioned Pain Modulation over the tenar eminence. The test will be a heat tonic stimulus which evoke a 3-pain intensity. The conditioning stimulus will be a cold water immersion (12ºC)

Interventions

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Spectroscopy

Spectroscopy is a noninvasive method to assess brain chemistry. The signal of the hydrogen atom attached to a certain molecule or metabolite has a particular frequency associated with a given metabolite. The utility of Spectroscopy is based on the fact thet the nuclei of atoms have magnetic properties that can be used to obtain chemical information regarding both the type of molecule and it is concentration.

The subjects will be scanned on a 3-T Siemens system and an 12-channel phased-array coil will be used to provide an optimum signal-to-noise ratio for spectroscopy data.

Intervention Type RADIATION

Questionnaires

Questionnaires are important to assess the chronic pain and their impact in the quality of life. For this reason, we will assess the Brief Pain Inventory (BPI), it is used to evaluate the subject's perception of pain severity and its interference. Moreover, we will assess neuropathic pain symptoms with the NPSI to detect paresthesia/dysaesthesia, evoked pain and paroxysmal pain. The catastrophizing score will be measured with the Pain Catastrophizing Helplessness Subscale. Also,we will assess the disability after whiplash using the Neck Disability Index.

Intervention Type OTHER

Conditioned Pain Modulation

Conditioned Pain Modulation over the tenar eminence. The test will be a heat tonic stimulus which evoke a 3-pain intensity. The conditioning stimulus will be a cold water immersion (12ºC)

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Whiplash syndrome
* Chronic pain
* Age between 18 to 65 years
* 4 months to 2 years after the whiplash syndrome

Exclusion Criteria

* Neurological disease
* Claustrophobia
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Hospital Nacional de Parapléjicos de Toledo

OTHER

Sponsor Role collaborator

University of Castilla-La Mancha

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Diego Serrano-Muñoz, MsC

Role: PRINCIPAL_INVESTIGATOR

Hospital Nacional de Parapléjicos, Toledo

Central Contacts

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Diego Serrano-Muñoz, MsC

Role: CONTACT

Phone: +34 925 24 77 00

Email: [email protected]

Julian Taylor-Green, PhD

Role: CONTACT

Phone: +34 925 24 77 00

Email: [email protected]

Other Identifiers

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GFSM-HNP

Identifier Type: -

Identifier Source: org_study_id