Evidence map›Paper›PMID 35862007›Full record

ArticleCirculation. Heart failure2022

Transcutaneous Vagus Nerve Stimulation Ameliorates the Phenotype of Heart Failure With Preserved Ejection Fraction Through Its Anti-Inflammatory Effects.

Khaled Elkholey, Monika Niewiadomska, Lynsie Morris, Seabrook Whyte, Jeremy Houser, Mary Beth Humphrey, Stavros Stavrakis

Open access · bronzeAbstract read
In one paragraph

Article in Circulation. Heart failure, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed, 2 pooled it
3.8field-weighted citation impact, top 6% 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

41 citing papers in PubMed, 2 syntheses or guidelines pooled it, 52 citations in OpenAlex.

  1. Immunology of heart failure with preserved ejection fraction.Expert review of clinical immunology · 2025
    Pooled it
  2. Pooled it
  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. Hypertension: a missing piece in HFpEF?Hypertension research : official journal of the Japanese Society of Hypertension · 2026
    Review
  5. Review
  6. Review
  7. Neuroimmune interactions in cardiovascular homeostasis and disease.American journal of physiology. Cell physiology · 2026
    Review
  8. Article
  9. Review
  10. Pocking the Ear for HFpEF?Cardiovascular drugs and therapy · 2026
    Article
  11. Article
  12. Article
  13. Review
  14. Review
  15. Review
  16. Review
  17. Review
  18. 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

7 authors at 1 institution in 1 country.

Khaled Elkholey *Cardiovascular Section, Department of Medicine (K.E., M.N., L.M., S.W., S.S.), University of Oklahoma Health Science Center, Oklahoma City.
Monika Niewiadomska *Cardiovascular Section, Department of Medicine (K.E., M.N., L.M., S.W., S.S.), University of Oklahoma Health Science Center, Oklahoma City.
Lynsie MorrisCardiovascular Section, Department of Medicine (K.E., M.N., L.M., S.W., S.S.), University of Oklahoma Health Science Center, Oklahoma City.
Seabrook WhyteCardiovascular Section, Department of Medicine (K.E., M.N., L.M., S.W., S.S.), University of Oklahoma Health Science Center, Oklahoma City.
Jeremy HouserRheumatology Section, Department of Medicine (J.H., M.B.H.), University of Oklahoma Health Science Center, Oklahoma City.
Mary Beth HumphreyRheumatology Section, Department of Medicine (J.H., M.B.H.), University of Oklahoma Health Science Center, Oklahoma City.ORCID 0000-0003-0042-4068
Stavros StavrakisCardiovascular Section, Department of Medicine (K.E., M.N., L.M., S.W., S.S.), University of Oklahoma Health Science Center, Oklahoma City.ORCID 0000-0002-4370-8135
University of Oklahoma Health Sciences Center · US

Funding

Addressing Health Disparities among Oklahoma Minority and Rural Communities through Clinical Research Education and Career DevelopmentR25MD011564 · NIMHD · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI HOUCHEN, COURTNEY WAYNE, STAVRAKIS, STAVROS · 2017 to 2021
$2.7M
Biomarker-guided optimization of transcutaneous vagal stimulation for atrial fibrillationR01HL161008 · NHLBI · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI Stavros Stavrakis · 2022 to 2026
$1.9M
Neuromodulation of Inflammation to Treat Heart Failure with Preserved Ejection FractionR21AG057879 · NIA · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI STAVRAKIS, STAVROS · 2018 to 2019
$407k
NHLBI NIH HHS R01 HL161008NIA NIH HHS R21 AG057879NIMHD NIH HHS R25 MD011564
6 · The paper itself

Abstract

backgroundA systemic proinflammatory state plays a central role in the development of heart failure with preserved ejection fraction (HFpEF). Low-level transcutaneous vagus nerve stimulation (LLTS) suppresses inflammation in animals and humans, mediated by an α7nAchR (alpha7 nicotinic acetylcholine receptor)-dependent pathway. We examined the effects of LLTS on cardiac function, inflammation, and fibrosis in the presence of α7nAchR pharmacological blockade in a rat model of HFpEF.

methodsDahl salt-sensitive rats at 7 weeks of age were treated with high-salt diet for 6 weeks to induce HFpEF, followed by 4 weeks of (1) LLTS, (2) LLTS with the α7nAchR blocker methyllycaconitine, (3) sham, and (4) olmesartan. Blood pressure, cardiac function by echocardiography, heart rate variability, and serum cytokines were measured at 13 and 17 weeks of age. Cardiac fibrosis, inflammatory cell infiltration, and gene expression were determined at 17 weeks.

resultsLLTS attenuated the increase in blood pressure; improved cardiac function; decreased inflammatory cytokines, macrophage infiltration, and fibrosis; and improved survival compared with other groups. Methyllycaconitine attenuated these effects, whereas olmesartan did not improve cardiac function or fibrosis despite maintaining similar blood pressure as LLTS. Heart rate variability was similarly improved in the LLTS and LLTS plus methyllycaconitine groups but remained low in the other groups. LLTS reversed the dysregulated inflammatory signaling pathways in HFpEF hearts.

conclusionsNeuromodulation with LLTS improved cardiac function in a rat model of HFpEF through its anti-inflammatory and antifibrotic effects. These results provide the basis for further clinical trials in humans.

Indexed as

Heart FailureVagus Nerve Stimulationalpha7 Nicotinic Acetylcholine ReceptorAnimalsAnti-Inflammatory AgentsCytokinesFibrosisHumansInfantInflammationPhenotypeRatsRats, Inbred DahlStroke Volumealpha7 Nicotinic Acetylcholine ReceptorAnti-Inflammatory AgentsCytokinesfibrosisheart failureheart ratehumansinflammation

Identifiers

PMID35862007
PMCPMC9388556
OpenAlexW4286592271

What OpenQuestion holds

Textmetadata
LicenceTDM
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 OpenQuestion graph.