Evidence map›Paper›PMID 24842290›Full record

ArticlePloS one2014

Aerobic exercise inhibits sympathetic nerve sprouting and restores β-adrenergic receptor balance in rats with myocardial infarction.

Ting Chen, Meng-Xin Cai, You-You Li, Zhi-Xiong He, Xiu-Chao Shi, Wei Song, You-Hua Wang, Yue Xi, Yu-Ming Kang, Zhen-Jun Tian

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 11% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 21 citations in OpenAlex.

  1. Pooled it
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  3. Review
  4. Article
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    Review
  8. Article
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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

10 authors at 4 institutions in 1 country.

Ting ChenInstitute of Sports and Exercise Biology, Shaanxi Normal University, Xi'an, Shaanxi, P. R. China; Department of Sports and Exercise, Tibet University for Nationalities, Xian yang, Shaanxi, P. R. China.
Meng-Xin CaiInstitute of Sports and Exercise Biology, Shaanxi Normal University, Xi'an, Shaanxi, P. R. China.
You-You LiDepartment of Physiology and Department of Cardiology, Fourth Military Medical University, Xi'an, Shaanxi, P. R. China.
Zhi-Xiong HeInstitute of Sports and Exercise Biology, Shaanxi Normal University, Xi'an, Shaanxi, P. R. China.
Xiu-Chao ShiInstitute of Sports and Exercise Biology, Shaanxi Normal University, Xi'an, Shaanxi, P. R. China.
Wei SongInstitute of Sports and Exercise Biology, Shaanxi Normal University, Xi'an, Shaanxi, P. R. China.
You-Hua WangInstitute of Sports and Exercise Biology, Shaanxi Normal University, Xi'an, Shaanxi, P. R. China.
Yue XiInstitute of Sports and Exercise Biology, Shaanxi Normal University, Xi'an, Shaanxi, P. R. China.
Yu-Ming KangDepartment of Physiology and Pathophysiology, Xi'an Jiaotong University Cardiovascular Research Center, Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi, P. R. China.
Zhen-Jun TianInstitute of Sports and Exercise Biology, Shaanxi Normal University, Xi'an, Shaanxi, P. R. China.
Shaanxi Normal University · CNAir Force Medical University · CNXi'an Jiaotong University · CNXizang Minzu University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCardiac sympathetic nerve sprouting and the dysregulation of β-adrenergic receptor (β-AR) play a critical role in the deterioration of cardiac function after myocardial infarction (MI). Growing evidence indicates that exercise provides protection against MI. The aims of this study were to investigate whether aerobic exercise following MI could inhibit sympathetic nerve sprouting and restore the balance of β3-AR/β1-AR.

methodsMale Sprague-Dawley rats were divided into three groups: sham-operated control group (SC), MI group (MI), and MI with aerobic exercise group (ME). The rats in ME group were assigned to 8 weeks of exercise protocol (16 m/min, 50 min/d, 5 d/wk). The expression of nerve growth factor (NGF), the sympathetic nerve marker-tyrosine hydroxylase (TH), the nerve sprouting marker-growth associated protein 43 (GAP43), and β1- and β2-AR expression in the peri-infarct area of the left ventricle (LV) were measured by Western blot and immunohistochemistry, while β3-AR expression was determined by Western blot and immunofluorescence. Endothelial nitric oxide synthase (NOS2), phospho-NOS2 (p-NOS2), and neuronal nitric oxide synthase (NOS1) were measured by Western blot.

resultsMI increased LV end-diastolic pressure (LVEDP), and decreased LV systolic pressure (LVSP). Compared with the MI group, aerobic exercise significantly decreased LVEDP and increased LVSP. The protein expression of TH, GAP43 and NGF was significantly increased after MI, which was normalized by exercise. Compared with the SC group, the ratios of β2-AR/β1-AR and β3-AR/β1-AR were elevated in the MI group, and the protein expression of β3-AR and NOS1 increased after MI. Compared with the MI group, the ratios of β2-AR/β1-AR and β3-AR/β1-AR were normalized in the ME group, while the protein expression of β3-AR and NOS1 significantly increased, and NOS2 was activated by exercise.

conclusionsAerobic exercise inhibits cardiac sympathetic nerve sprouting, restores β3-AR/β1-AR balance and increases β3-AR expression through the activation of NOS2 and NOS1 after myocardial infarction.

Indexed as

AnimalsBlotting, WesternExercise TherapyFluorescent Antibody TechniqueGAP-43 ProteinHemodynamicsImmunohistochemistryMaleMyocardial InfarctionNerve Growth FactorNitric Oxide Synthase Type INitric Oxide Synthase Type IIRatsRats, Sprague-DawleyReceptors, Adrenergic, betaSympathetic Nervous SystemGAP-43 ProteinNerve Growth FactorNitric Oxide Synthase Type INitric Oxide Synthase Type IINos1 protein, ratNos2 protein, ratReceptors, Adrenergic, betaTyrosine 3-Monooxygenase

Identifiers

PMID24842290
PMCPMC4026473
OpenAlexW2079838657

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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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.