Evidence map›Paper›PMID 28710070›Full record

ArticleAmerican journal of physiology. Heart and circulatory physiology2017

TNF-α receptor 1 knockdown in the subfornical organ ameliorates sympathetic excitation and cardiac hemodynamics in heart failure rats.

Yang Yu, Shun-Guang Wei, Robert M Weiss, Robert B Felder

Open access · greenAbstract read
In one paragraph

Article in American journal of physiology. Heart and circulatory physiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
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

31 citing papers in PubMed, 41 citations in OpenAlex.

  1. Review
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  9. Downregulation ofWorld journal of gastroenterology · 2022
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  20. Complexity of TNF-α Signaling in Heart Disease.Journal of clinical medicine · 2020
    Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Yang YuDepartment of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa; and.
Shun-Guang WeiDepartment of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa; and.
Robert M WeissDepartment of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa; and.
Robert B FelderDepartment of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa; and robert-felder@uiowa.edu.
University of Iowa · US

Funding

Cytokines and Sympathetic Activation in Heart FailureR01HL073986 · NHLBI · UNIVERSITY OF IOWA · PI FELDER, ROBERT B · 2003 to 2017
$5.2M
High-Resolution Research UltrasoundS10OD019941 · OD · UNIVERSITY OF IOWA · PI WEISS, ROBERT M · 2015 to 2015
$298k
NHLBI NIH HHS R01 HL073986NIH HHS S10 OD019941
6 · The paper itself

Abstract

In systolic heart failure (HF), circulating proinflammatory cytokines upregulate inflammation and renin-angiotensin system (RAS) activity in cardiovascular regions of the brain, contributing to sympathetic excitation and cardiac dysfunction. Important among these is the subfornical organ (SFO), a forebrain circumventricular organ that lacks an effective blood-brain barrier and senses circulating humors. We hypothesized that the tumor necrosis factor-α (TNF-α) receptor 1 (TNFR1) in the SFO contributes to sympathetic excitation and cardiac dysfunction in HF rats. Rats received SFO microinjections of a TNFR1 shRNA or a scrambled shRNA lentiviral vector carrying green fluorescent protein, or vehicle. One week later, some rats were euthanized to confirm the accuracy of the SFO microinjections and the transfection potential of the lentiviral vector. Other rats underwent coronary artery ligation (CL) to induce HF or a sham operation. Four weeks after CL, vehicle- and scrambled shRNA-treated HF rats had significant increases in TNFR1 mRNA and protein, NF-κB activity, and mRNA for inflammatory mediators, RAS components and c-Fos protein in the SFO and downstream in the hypothalamic paraventricular nucleus, along with increased plasma norepinephrine levels and impaired cardiac function, compared with vehicle-treated sham-operated rats. In HF rats treated with TNFR1 shRNA, TNFR1 was reduced in the SFO but not paraventricular nucleus, and the central and peripheral manifestations of HF were ameliorated. In sham-operated rats treated with TNFR1 shRNA, TNFR1 expression was also reduced in the SFO but there were no other effects. These results suggest a key role for TNFR1 in the SFO in the pathophysiology of systolic HF.

Indexed as

AnimalsCoronary CirculationElectrocardiographyGene Knockdown TechniquesHeart FailureHemodynamicsMaleNF-kappa BNorepinephrineProto-Oncogene Proteins c-fosRatsRats, Sprague-DawleyReceptors, Tumor Necrosis Factor, Type IRenin-Angiotensin SystemRNA, Small InterferingSubfornical OrganNF-kappa BNorepinephrineProto-Oncogene Proteins c-fosReceptors, Tumor Necrosis Factor, Type IRNA, Small InterferingTnfrsf1a protein, ratTumor Necrosis Factor-alphahypothalamic paraventricular nucleusproinflammatory cytokinesrenin-angiotensin system

Identifiers

PMID28710070
PMCPMC5668605
OpenAlexW2735542488

What OpenQuestion holds

Textmetadata
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.