Mechanism-based Choice of Therapy for Neuropathic Pain

October 10, 2017 updated by: d_yarnitsky, Rambam Health Care Campus

Mechanism-based Choice of Therapy for Neuropathic Pain: Can Treatments Success in Neuropathic Post-operative Pain be Coupled to Psychophysical Pain Modulation Profile?

Mechanism-based choice of therapy for neuropathic pain:

Can treatments success in neuropathic post-operative pain be coupled to psychophysical pain modulation profile?

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Neuropathic or idiopathic pain patients will be assessed with the variety of pain tests including the conditioned pain modulation (CPM) and temporal summation (TS). Then, they will be offered on the double-blind design a several weeks treatment with either pregabalin or duloxetine. Patients will be followed-up weekly by phone for their pain relief and will be re-assessed in the lab toward the end of the treatment. The investigators suggest that patients with less-efficient CPM (deficient pain inhibition) will "earn" more pain relief from the treatment with duloxetine, while the patients with the enhanced pain summation will response better to pregabalin.

Study Type

Interventional

Enrollment (Actual)

32

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Israel
      • Haifa, Israel
        • Rambam Medical Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • patients planned for thoracotomy

Exclusion Criteria:

  • age below 18 and above 75 years
  • patients with psychiatric or cognitive dysfunction precluding use of psychophysics
  • those who cannot communicate in Hebrew
  • patients with existing thoracic or other current chronic pain

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Pregabalin
Drug: Duloxetine
Initial dose of 30 mg/d will be given for one week, in order to minimize possible side effects and drop outs, and then a fixed dose of 60 mg/d will be given for additional 5 weeks
Other Names:
  • SSNRI
Active Comparator: Duloxetine
Drug: Pregabalin
Initial dose of 75x2mg/d for one week, and then fixed dose of 150x2mg/d for the following 5 weeks
Other Names:
  • Calcium-channel blocker

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
clinical pain
Time Frame: One year
The pain relief will be achieved by treatment with duloxetine or pregabalin. We propose that the patients with deficient pain inhibition (As assessed by conditioned pain modulation lab test) will have better drug efficacy of cymbalta which restores the deficient level of serotonin and noradrenalin. In turn, pregabalin will be more effective in patients with enhance central sensitization of pain as measured by temporal summation assessment. In line, CPM and TS will be modulated by the treatment, in parallel with the analgesic effect.
One year

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Rambam Health Care Campus

Investigators

  • Study Director: Michal Granot, PhD, Haifa University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

April 1, 2008

Primary Completion (Actual)

January 1, 2014

Study Completion (Actual)

January 1, 2014

Study Registration Dates

First Submitted

July 10, 2010

First Submitted That Met QC Criteria

May 23, 2011

First Posted (Estimate)

May 24, 2011

Study Record Updates

Last Update Posted (Actual)

October 11, 2017

Last Update Submitted That Met QC Criteria

October 10, 2017

Last Verified

October 1, 2017

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • PostOperativePain05CTIL

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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