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Brain Imaging and Behavior

, Volume 10, Issue 3, pp 829–839 | Cite as

Differential dopamine function in fibromyalgia

  • Daniel S. Albrecht
  • Palmer J. MacKie
  • David A. Kareken
  • Gary D. Hutchins
  • Evgeny J. Chumin
  • Bradley T. Christian
  • Karmen K. YoderEmail author
Original Research

Abstract

Approximately 30 % of Americans suffer from chronic pain disorders, such as fibromyalgia (FM), which can cause debilitating pain. Many pain-killing drugs prescribed for chronic pain disorders are highly addictive, have limited clinical efficacy, and do not treat the cognitive symptoms reported by many patients. The neurobiological substrates of chronic pain are largely unknown, but evidence points to altered dopaminergic transmission in aberrant pain perception. We sought to characterize the dopamine (DA) system in individuals with FM. Positron emission tomography (PET) with [18F]fallypride (FAL) was used to assess changes in DA during a working memory challenge relative to a baseline task, and to test for associations between baseline D2/D3 availability and experimental pain measures. Twelve female subjects with FM and 11 female controls completed study procedures. Subjects received one FAL PET scan while performing a “2-back” task, and one while performing a “0-back” (attentional control, “baseline”) task. FM subjects had lower baseline FAL binding potential (BP) in several cortical regions relative to controls, including anterior cingulate cortex. In FM subjects, self-reported spontaneous pain negatively correlated with FAL BP in the left orbitofrontal cortex and parahippocampal gyrus. Baseline BP was significantly negatively correlated with experimental pain sensitivity and tolerance in both FM and CON subjects, although spatial patterns of these associations differed between groups. The data suggest that abnormal DA function may be associated with differential processing of pain perception in FM. Further studies are needed to explore the functional significance of DA in nociception and cognitive processing in chronic pain.

Keywords

Dopamine Positron emission tomography Pain Fallypride Fibromyalgia Imaging Chronic pain 

Notes

Acknowledgments

This study was supported by R03DA024774 (KKY). The authors thank Christine Herring, Lauren Federici, and James Walters for assistance with data collection; Kevin Perry for acquisition of PET data; Michele Beal and Courtney Robbins for assistance with MR scanning; and Dr. Bruce Mock, Dr. Clive Brown-Proctor, Dr. Qi-Huang Zheng, Barbara Glick-Wilson, and Brandon Steele for [18F]fallypride synthesis. Dr. Brenna McDonald provided consultation for scoring and interpretation of the neuropsychological assessments and working memory task.

Compliance with ethical standards

Funding

This study was supported by the National Institute on Drug Abuse R03DA024774 (KKY).

Conflict of interest

D.S. Albrecht, P.J. MacKie, D.A. Kareken, G.D. Hutchins, E.J. Chumin, B.T. Christian, and K.K. Yoder declare that they have no conflict of interest.

Informed consent

All study procedures were approved by the Indiana University Institutional Review Board, and as such, were in accordance with the ethical standards of the Belmont Report (1974; National Commission for the Protection of Human Subjects of Biomedical and Behavioral Research). Written informed consent was obtained from all patients prior to participation in the study.

Supplementary material

11682_2015_9459_MOESM1_ESM.pdf (74 kb)
Online Resource 1 Timeline of a scan day. N-back represents either 0-back or 2-back. (PDF 74 kb)
11682_2015_9459_MOESM2_ESM.pdf (64 kb)
Online Resource 2 Cognitive Task Performance. All variables are presented as average ± s.d. The range of possible scores are displayed to the right of the variable, if available. FM: fibromyalgia; CON: control; PASAT: Paced Auditory Serial Addition Task; WAIS: Wechsler Adult Intelligence Scale. * indicates significant group differences at p < 0.05 (PDF 63 kb)
11682_2015_9459_MOESM3_ESM.pdf (55 kb)
Online Resource 3 Group Differences in baseline FAL BP. BLBP values are presented as mean ± s.d. MNI: Montreal Neurological Institute; FM: fibromyalgia; CON: control; diff: difference; ACC: anterior cingulate cortex. (PDF 54 kb)
11682_2015_9459_MOESM4_ESM.pdf (52 kb)
Online Resource 4 Baseline scan pain is negatively correlated with FAL BLBP in FM subjects. OFC: orbitofrontal cortex. (PDF 52 kb)
11682_2015_9459_MOESM5_ESM.pdf (64 kb)
Online Resource 5 Baseline FAL BP is negatively correlated with average pain sensitivity in FM and CON groups. FM: fibromyalgia; CON: control; SFG: superior frontal gyrus; OFC: orbitofrontal cortex; ACC: anterior cingulate cortex. (PDF 63 kb)
11682_2015_9459_MOESM6_ESM.pdf (82 kb)
Online Resource 6 Baseline FAL BP is negatively correlated with average pain tolerance in FM and CON groups. FM: fibromyalgia; CON: control; ACC: anterior cingulate cortex; DCA: dorsal caudate; IFG: inferior frontal gyrus; SFG: superior frontal gyrus; SMA: supplementary motor area; MTG: middle temporal gyrus; MFG: middle frontral gyrus (PDF 81 kb)
11682_2015_9459_MOESM7_ESM.pdf (169 kb)
Online Resource 7 Extracted FAL BLBP from clusters where experimental pain tolerance was significantly negatively correlated with FAL BLBP in FM left dorsal caudate (L-DCA, top) and CON right thalamus (R-thalamus, bottom). (PDF 169 kb)

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Daniel S. Albrecht
    • 1
    • 2
    • 3
  • Palmer J. MacKie
    • 4
  • David A. Kareken
    • 1
    • 2
    • 3
    • 5
  • Gary D. Hutchins
    • 1
    • 2
  • Evgeny J. Chumin
    • 1
    • 2
    • 3
  • Bradley T. Christian
    • 6
  • Karmen K. Yoder
    • 1
    • 2
    • 3
    • 7
    Email author
  1. 1.Department of Radiology & Imaging SciencesIndiana University School of MedicineIndianapolisUSA
  2. 2.Center for NeuroimagingIndiana University School of MedicineIndianapolisUSA
  3. 3.Stark Neurosciences Research InstituteIndiana University School of MedicineIndianapolisUSA
  4. 4.Department of MedicineIndiana University School of MedicineIndianapolisUSA
  5. 5.Department of NeurologyIndiana University School of MedicineIndianapolisUSA
  6. 6.Department of Medical Physics, School of Medicine and Public HealthUniversity of Wisconsin-MadisonMadisonUSA
  7. 7.Department of PsychologyIndiana University-Purdue University at IndianapolisIndianapolisUSA

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