Evidence map›Paper›PMID 36085552›Full record

ArticleESC heart failure2022

Non-invasive tragus stimulation improves cardiac post-ischemic remodeling by regulating cardiac parasympathetic activity.

Mingxian Chen, Hui Chen, Zhen Wang, Yuchen Pan, Huihui Hu, Songyun Wang, Yuan Yuan, Zhuo Wang, Hong Jiang

Open access · goldAbstract read
In one paragraph

Article in ESC heart failure, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 pooled it
0.4field-weighted citation impact, top 39% 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

6 citing papers in PubMed, 1 synthesis or guideline pooled it, 6 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Acute right-sided transcutaneous vagus nerve stimulation improves cardio-vagal baroreflex gain in patients with chronic heart failure.Clinical autonomic research : official journal of the Clinical Autonomic Research Society · 2025
    Trial
  4. Article
  5. Pocking the Ear for HFpEF?Cardiovascular drugs and therapy · 2026
    Article
  6. Article
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 2 institutions in 1 country.

Mingxian ChenDepartment of Cardiology, The Second Xiangya Hospital of Central South University, Changsha, China.
Hui ChenDepartment of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.
Zhen WangDepartment of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.
Yuchen PanDepartment of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.
Huihui HuDepartment of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.
Songyun WangDepartment of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.
Yuan YuanCardiovascular Center, Liyuan Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Zhuo WangDepartment of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.ORCID 0000-0002-5682-3677
Hong JiangDepartment of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.
Wuhan University · CNCentral South University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsOur previous study proved that low-level tragus nerve stimulation (LL-TS) could improve left ventricular remodelling by cardiac down-stream mechanisms. However, the cardiac up-stream mechanisms remain unknown. METHODS AND

resultsTwenty-eight adult beagle dogs were randomly divided into an MI group (myocardial infarction was induced by permanent ligation of the left coronary artery, n = 10), an LL-TS group (MI plus intermittent LL-TS treatment, n = 10), and a control group (sham ligation with the same stimulation as the LL-TS group, n = 8). Auricular tragus nerve was bilaterally delivered to the tragus via ear-clips connected to a custom-made stimulator. The voltage slowing sinus rate was used as the threshold to set the LL-TS 80% below this level. At the end of 4 weeks post-MI, LL-TS could significantly increase atrial ganglion plex (GP) activity, decreased left stellate ganglion (LSG) activity, reduced LV dilation, and improved ventricular functions. Chronic intermittent LL-TS treatment significantly attenuated left ventricular remodelling via the up-regulation of α7nAChR expression and the down-regulation of MMP-9 level in post-MI LV tissue. The elevated protein and mRNA of MMP-9 levels in remote areas were significantly ameliorated by LL-TS treatment.

conclusionsChronic LL-TS increased GP neural activity and improved ventricular remodelling possibly via α7nAChR/MMP-9 axis.

Indexed as

Matrix Metalloproteinase 9Myocardial Infarctionalpha7 Nicotinic Acetylcholine ReceptorAnimalsDogsHeart AtriaVentricular Remodelingalpha7 Nicotinic Acetylcholine ReceptorMatrix Metalloproteinase 9Matrix metallopeptidase 9Tragus nerve stimulationVentricular remodellingα7 nicotinic acetylcholine receptor

Identifiers

PMID36085552
PMCPMC9773748
OpenAlexW4295276623

What Socratic holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

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 Socratic graph.