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MR(Magnetic Resonance) Imaging of Neurotransmitters in Chronic Pain

31 maj 2018 uppdaterad av: University of Michigan

MR (Magnetic Resonance) Imaging of the Excitatory and Inhibitory Neurotransmitters in Chronic Pain

This study is designed to assess:

Hypothesis #1: That there is a significant central pain component in a distinct subset of patients diagnosed with knee osteoarthritis(KOA), Chronic low back pain(CLBP), painful diabetic neuropathy(PDN.)

Hypothesis # 2: To establish a reliable strategy for differentiation of central pain predominant from peripheral pain predominant knee osteoarthritis(KOA), chronic low back pain(CLBP)and peripheral diabetic neuropathy(PDN) patients using clinical features, experimental pain testing and magnetic resonance(MR) Spectroscopy.

Studieöversikt

Status

Avslutad

Betingelser

Intervention / Behandling

Detaljerad beskrivning

This study will identify clinical and neuroimaging markers in chronic pain in an effort to provide individual-based treatments. This study will differentiate chronic pain subjects (knee osteoarthritis, low back pain and painful diabetic neuropathy) into two groups: those who have central pain predominant symptoms and those who have peripheral pain predominant symptoms. The response to medical treatment between these two groups is quite different, thus a reliable strategy to correctly categorize chronic pain sufferers offers the opportunity to provide targeted, effective treatments. Chronic pain is a prevalent problem in the VA veteran population with significant associated costs; in particular knee osteoarthritis, chronic low back pain and painful diabetic neuropathy are common in this population. The proposed study will use different clinical pain tests and advanced neuroimaging techniques to improve our understanding of chronic pain and improve patient outcomes.

Studietyp

Interventionell

Inskrivning (Faktisk)

87

Fas

  • Inte tillämpbar

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studieorter

  • Förenta staterna
    • Michigan
      • Ann Arbor, Michigan, Förenta staterna, 48105
        • VA Hospital

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

30 år till 70 år (Vuxen, Äldre vuxen)

Tar emot friska volontärer

Ja

Kön som är behöriga för studier

Allt

Beskrivning

Inclusion Criteria:

- Must be Right Handed.

(Chronic Pain with knee osteoarthritis)

  • Diagnosed with: unilateral, symptomatic knee osteoarthritis based on American College of Rheumatology (ACR) criteria.
  • Have had a knee x-ray within the last 6 months.
  • Must have average pain intensity of 4 or greater on a 0 (no pain) to 10 (worst pain imaginable) scale.

(Chronic Low Back Pain)

  • Have primary complaint of constant or intermittent back pain of at least 6 months duration.
  • Have a Roland Morris Disability Questionnaire score of >7.

(Diabetes Mellitus with Painful Peripheral Neuropathy)

  • Have a diagnosis of diabetes mellitus for at least 6 months.
  • Have a diagnosis of diabetic peripheral neuropathy.
  • Have had Electromyography(EMG) testing within the last 6 months.
  • Have a >40 mm score on the short-form McGill Pain questionnaire.

(Healthy controls)

  • Must be pain free
  • No history of neurological or psychiatric illness.
  • No diagnosis of Diabetes Mellitus.
  • No evidence of neuropathy on clinical assessment.

Exclusion Criteria:

  • Being pregnant.
  • Have metal in the body or other contraindications to Magnetic Resonance Imaging (MRI).
  • Have a chronic pain condition unrelated to knee osteoarthritis, chronic low back pain or diabetes.
  • Have currently or a history of brain infection, stroke or tumor.
  • Have a risk factor for other non-diabetic neuropathies

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

  • Primärt syfte: Grundläggande vetenskap
  • Tilldelning: Icke-randomiserad
  • Interventionsmodell: Faktoriell uppgift
  • Maskning: Ingen (Open Label)

Vapen och interventioner

Deltagargrupp / Arm
Intervention / Behandling
Experimentell: Knee osteoarthritis (MRI, surveys, pain testing)
Subjects previously diagnosed with knee osteoarthritis will have an MRI with imaging that measures brain metabolites. There are surveys to complete and a session of pain tolerance testing.
Övrig: MRIs
Subjects will have an MRI scan to view specific images, and brain activity patterns thought to be affected in patients with KOA, chronic low back pain and diabetic patients with painful neuropathy. Healthy volunteers will undergo the same MRI scan that lasts about 90 min.
Övrig: Pain testing
There will be a 1-1.5 hour session including pain tolerance testing.
Aktiv komparator: Healthy controls (MRI, surveys,pain testing)
Healthy volunteers will have an MRI with imaging that measures brain metabolites. There are surveys to complete and a session of pain tolerance testing.
Övrig: MRIs
Subjects will have an MRI scan to view specific images, and brain activity patterns thought to be affected in patients with KOA, chronic low back pain and diabetic patients with painful neuropathy. Healthy volunteers will undergo the same MRI scan that lasts about 90 min.
Övrig: Pain testing
There will be a 1-1.5 hour session including pain tolerance testing.
Experimentell: diabetic peripheral neuropathy
Subjects previously diagnosed with diabetic peripheral neuropathy will have an MRI with imaging that measures brain metabolites. There are surveys to complete and a session of pain tolerance testing.
Övrig: MRIs
Subjects will have an MRI scan to view specific images, and brain activity patterns thought to be affected in patients with KOA, chronic low back pain and diabetic patients with painful neuropathy. Healthy volunteers will undergo the same MRI scan that lasts about 90 min.
Övrig: Pain testing
There will be a 1-1.5 hour session including pain tolerance testing.
Experimentell: chronic low back pain
Subjects previously diagnosed with chronic low back pain will have an MRI with imaging that measures brain metabolites. There are surveys to complete and a session of pain tolerance testing.
Övrig: MRIs
Subjects will have an MRI scan to view specific images, and brain activity patterns thought to be affected in patients with KOA, chronic low back pain and diabetic patients with painful neuropathy. Healthy volunteers will undergo the same MRI scan that lasts about 90 min.
Övrig: Pain testing
There will be a 1-1.5 hour session including pain tolerance testing.

Vad mäter studien?

Primära resultatmått

Resultatmått
Tidsram
Assessment of chronic pain
Tidsram: 2 years
2 years

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Sponsor

University of Michigan

Utredare

  • Huvudutredare: Foerster Bradley, M.D., University of Michigan
  • Huvudutredare: Bradley Foerster, M.D., University of Michigan

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart

1 september 2012

Primärt slutförande (Faktisk)

7 juni 2017

Avslutad studie (Faktisk)

7 juni 2017

Studieregistreringsdatum

Först inskickad

13 juni 2012

Först inskickad som uppfyllde QC-kriterierna

13 juni 2012

Första postat (Uppskatta)

15 juni 2012

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)

4 juni 2018

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

31 maj 2018

Senast verifierad

1 maj 2018

Mer information

Termer relaterade till denna studie

Ytterligare relevanta MeSH-villkor

Andra studie-ID-nummer

  • HUM00055261

Plan för individuella deltagardata (IPD)

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NEJ

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