Evidence map›Paper›PMID 37870480›Full record

SynthesisThe international journal of neuropsychopharmacology2024

Neural, Anti-Inflammatory, and Clinical Effects of Transauricular Vagus Nerve Stimulation in Major Depressive Disorder: A Systematic Review.

Joao Parente, Anna Carolyna Gianlorenco, Ingrid Rebello-Sanchez, Minkyung Kim, Jose Mario Prati, Chi Kyung Kim, Hyuk Choi, Jae-Jun Song, Felipe Fregni

Registry-linked trialOpen access · goldAbstract readSystematic Review
In one paragraph

Synthesis in The international journal of neuropsychopharmacology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06193317 (Effects of taVNS on Fibromyalgia Pain), which is not on this map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
2.1field-weighted citation impact, top 12% 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.

NCT06193317 nanot yet recruitingnot on this mapstarted 2026, after this paper: background citation

Effects of taVNS on Fibromyalgia Pain

TypeinterventionalSponsorSpaulding Rehabilitation HospitalRan2026 to 2029Enrolled152ConditionsFibromyalgia, PainArmsTransauricular vagus nerve stimulation (taVNS)
3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 17 citations in OpenAlex.

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  16. Observational
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

9 authors at 6 institutions in 3 countries.

Joao ParenteEscola Bahiana de Medicina e Saúde Pública, Salvador, Bahia, Brazil.
Anna Carolyna GianlorencoDepartment of Physical Therapy, Federal University of Sao Carlos, Sao Paulo, Brazil.
Ingrid Rebello-SanchezUniversidade Federal da Bahia, Salvador, Bahia, Brazil.
Minkyung KimDepartment of Neurology, Korea University Guro Hospital, Seoul, Republic of Korea.
Jose Mario PratiDepartment of Physical Therapy, Federal University of Sao Carlos, Sao Paulo, Brazil.
Chi Kyung KimDepartment of Neurology, Korea University Guro Hospital, Seoul, Republic of Korea.
Hyuk ChoiDepartment of Medical Sciences, Graduate School of Medicine, Korea University, Seoul, Republic of Korea.
Jae-Jun SongNeurive Co., Ltd., Gimhae, Republic of Korea.
Felipe FregniNeuromodulation Center and Center for Clinical Research Learning, Spaulding Rehabilitation Hospital and Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA.ORCID 0000-0002-1703-7526
Korea University Medical Center · KRUniversidade Federal de São Carlos · BREscola Bahiana de Medicina e Saúde Pública · BRHarvard University · USKorea University · KRUniversidade Federal da Bahia · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe discovery of effective treatments for major depressive disorder (MDD) may help target different brain pathways. Invasive vagus nerve stimulation (VNS) is an effective neuromodulation technique for the treatment of MDD; however, the effectiveness of the noninvasive technique, transauricular VNS (taVNS), remains unknown. Moreover, a mechanistic understanding of the neural effects behind its biological and therapeutic effects is lacking. This review aimed to evaluate the clinical evidence and the neural and anti-inflammatory effects of taVNS in MDD.

methodsTwo searches were conducted using a systematic search strategy reviewed the clinical efficacy and neural connectivity of taVNS in MDD in humans and evaluated the changes in inflammatory markers after taVNS in humans or animal models of depression. A risk of bias assessment was performed in all human studies.

resultsOnly 5 studies evaluated the effects of taVNS in patients with depression. Although the studies demonstrated the efficacy of taVNS in treating depression, they used heterogeneous methodologies and limited data, thus preventing the conduct of pooled quantitative analyses. Pooled analysis could not be performed for studies that investigated the modulation of connectivity between brain areas; of the 6 publications, 5 were based on the same experiment. The animal studies that analyzed the presence of inflammatory markers showed a reduction in the level of pro-inflammatory cytokines or receptor expression.

conclusionsData on the clinical efficacy of taVNS in the treatment of MDD are limited. Although these studies showed positive results, no conclusions can be drawn regarding this topic considering the heterogeneity of these studies, as in the case of functional connectivity studies. Based on animal studies, the application of taVNS causes a decrease in the level of inflammatory factors in different parts of the brain, which also regulate the immune system. Therefore, further studies are needed to understand the effects of taVNS in patients with MDD.

Indexed as

Major Depressive DisorderVagus Nerve StimulationAnimalsBrainHumansTreatment Outcomemajor depressive disorderneuroinflammationneurophysiologytaVNS

Identifiers

PMID37870480
PMCPMC10972554
OpenAlexW4387866475

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

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.