Evidence map›Paper›PMID 33727857›Full record

ArticleJournal of pain research2021

Dopaminergic Regulation of Reward System Connectivity Underpins Pain and Emotional Suffering in Migraine.

Dajung J Kim, Hassan Jassar, Manyoel Lim, Thiago D Nascimento, Alexandre F DaSilva

Open access · goldAbstract read
In one paragraph

Article in Journal of pain research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.6field-weighted citation impact, top 10% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 27 citations in OpenAlex.

  1. High-definition tDCS over primary motor cortex modulates brain signal variability and functional connectivity in episodic migraine.Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2024
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  8. Chronic Pain and Opioids in the Elderly: Treating the Brain, Not Just the Body.International journal of environmental research and public health · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Dajung J KimHeadache and Orofacial Pain Effort (H.O.P.E.), Biologic and Material Sciences & Prosthodontics, University of Michigan School of Dentistry, Ann Arbor, MI, 48109, USA.ORCID 0000-0002-4572-0146
Hassan JassarHeadache and Orofacial Pain Effort (H.O.P.E.), Biologic and Material Sciences & Prosthodontics, University of Michigan School of Dentistry, Ann Arbor, MI, 48109, USA.
Manyoel LimHeadache and Orofacial Pain Effort (H.O.P.E.), Biologic and Material Sciences & Prosthodontics, University of Michigan School of Dentistry, Ann Arbor, MI, 48109, USA.
Thiago D NascimentoHeadache and Orofacial Pain Effort (H.O.P.E.), Biologic and Material Sciences & Prosthodontics, University of Michigan School of Dentistry, Ann Arbor, MI, 48109, USA.
Alexandre F DaSilvaHeadache and Orofacial Pain Effort (H.O.P.E.), Biologic and Material Sciences & Prosthodontics, University of Michigan School of Dentistry, Ann Arbor, MI, 48109, USA.
University of Michigan · US

Funding

Investigation and Modulation of the Central Mu-Opioid Mechanism in Migraine (in vivo)R01NS094413 · NINDS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI ALEXANDRE DASILVA · 2015 to 2026
$4.3M
Investigation and Modulation of the Mu-Opioid Mechanism in Chronic TMD (in vivo)U01DE025633 · NIDCR · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI DASILVA, ALEXANDRE · 2016 to 2020
$2.4M
Structural and Molecular Neuroplasticity in Chronic Trigeminal PainK23NS062946 · NINDS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI DASILVA, ALEXANDRE · 2009 to 2013
$779k
NIDCR NIH HHS U01 DE025633NINDS NIH HHS K23 NS062946NINDS NIH HHS R01 NS094413
6 · The paper itself

Abstract

purposeIt has been suggested that reward system dysfunction may account for emotion and pain suffering in migraine. However, there is a lack of evidence whether the altered reward system connectivity is directly associated with clinical manifestations, including negative affect and ictal pain severity and, at the molecular level, the dopamine (DA) D2/D3 receptors (D2/3Rs) signaling implicated in encoding motivational and emotional cues. PATIENTS AND

methodsWe acquired resting-state functional MRI from interictal episodic migraine (EM) patients and age-matched healthy controls, as well as positron emission tomography (PET) with [

resultsCompared with controls, the EM group showed weaker right NAc connectivity with areas implicated in pain and emotional regulation, such as the amygdala, rostral anterior cingulate cortex, hippocampus, and thalamus; but showed stronger left NAc connectivity with the dorsolateral prefrontal cortex and lingual gyrus. Moreover, among the altered NAc connectivities, only right NAc-amygdala connectivity was inversely correlated with DA D2/3Rs availability in migraine patients (diagnostic group-by-D2/3Rs interaction p < 0.007). At a clinical level, such weaker NAc-amygdala connectivity was associated with lower interictal positive affect and greater ictal pain severity over the head and facial extension area (pain area and intensity number summation, PAINS).

conclusionTogether, our findings suggest that altered reward system connectivity, specifically between the NAc and amygdala, might be affected by endogenous DA D2/3Rs signaling, and such process might be a neural mechanism that underlies emotional and pain suffering in episodic migraineurs.

Indexed as

craniofacial paindopaminefunctional connectivitymigrainenucleus accumbensreward system

Identifiers

PMID33727857
PMCPMC7955762
OpenAlexW3135572403

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.