Evidence map›Paper›PMID 26195479›Full record

ArticleHypertension (Dallas, Tex. : 1979)2015

Role of Chemoreceptor Activation in Hemodynamic Responses to Electrical Stimulation of the Carotid Sinus in Conscious Rats.

Pedro L Katayama, Jaci A Castania, Daniel P M Dias, Kaushik P Patel, Rubens Fazan, Helio C Salgado

Abstract read
In one paragraph

Article in Hypertension (Dallas, Tex. : 1979), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
–field-weighted citation impact
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

15 citing papers in PubMed.

  1. Article
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  3. Observational
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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

6 authors.

Pedro L KatayamaFrom the Department of Physiology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil (P.L.K., J.A.C., D.P.M.D., R.F., H.C.S.); and Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha (K.P.P.).
Jaci A CastaniaFrom the Department of Physiology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil (P.L.K., J.A.C., D.P.M.D., R.F., H.C.S.); and Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha (K.P.P.).
Daniel P M DiasFrom the Department of Physiology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil (P.L.K., J.A.C., D.P.M.D., R.F., H.C.S.); and Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha (K.P.P.).
Kaushik P PatelFrom the Department of Physiology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil (P.L.K., J.A.C., D.P.M.D., R.F., H.C.S.); and Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha (K.P.P.).
Rubens FazanFrom the Department of Physiology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil (P.L.K., J.A.C., D.P.M.D., R.F., H.C.S.); and Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha (K.P.P.).
Helio C SalgadoFrom the Department of Physiology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil (P.L.K., J.A.C., D.P.M.D., R.F., H.C.S.); and Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha (K.P.P.). hcsalgado@fmrp.usp.br.

Funding

Role of HIF1-alpha and Renal afferents in Activation of the PVN in Heart FailureR56HL124104 · NHLBI · UNIVERSITY OF NEBRASKA MEDICAL CENTER · PI PATEL, KAUSHIK P · 2014 to 2014
$354k
NHLBI NIH HHS R56 HL124104
6 · The paper itself

Abstract

Electric carotid baroreflex activation has been used to treat patients with resistant hypertension. It is hypothesized that, in conscious rats, combined activation of carotid baro- and chemoreceptors afferences attenuates the reflex hypotension. Rats were divided into 4 groups: (1) control group, with unilateral denervation of the right carotid chemoreceptors; (2) chemoreceptor denervation group, with bilateral ligation of the carotid body artery; (3) baroreceptor denervation group, with unilateral denervation of the left carotid baroreceptors and right carotid chemoreceptors; and (4) carotid bifurcation denervation group, with denervation of the left carotid baroreceptors and chemoreceptors, plus denervation of the right carotid chemoreceptors. Animals were subjected to 4 rounds of electric stimulation (5 V, 1 ms), with 15, 30, 60, and 90 Hz applied randomly for 20 s. Electric stimulation caused greater hypotensive responses in the chemoreceptor denervation group than in the control group, at 60 Hz (-37 versus -19 mm Hg) and 90 Hz (-33 versus -19 mm Hg). The baroreceptor denervation group showed hypertensive responses at all frequencies of stimulation. In contrast, the carotid sinus denervation group showed no hemodynamic responses. The control group presented no changes in heart rate, whereas the chemoreceptor denervation group and the baroreceptor denervation group showed bradycardic responses. These data demonstrate that carotid chemoreceptor activation attenuates the reflex hypotension caused by combined electric stimulation of the carotid sinus and the carotid sinus nerve in conscious rats. These findings may provide useful insight for clinical studies using baroreflex activation therapy in resistant hypertension and heart failure.

Indexed as

AnimalsBaroreflexBlood PressureCarotid SinusChemoreceptor CellsDenervationElectric StimulationHeart RateHemodynamicsMalePressoreceptorsRatsbaroreflexhemodynamicshypertensionpressoreceptorssympathetic nervous system

Identifiers

PMID26195479
PMCPMC4537377

What OpenQuestion holds

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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.