Evidence map›Paper›PMID 30930131›Full record

ArticleNeuroscience2019

Pre- and post-inspiratory neurons change their firing properties in female rats exposed to chronic intermittent hypoxia.

George M P R Souza, William H Barnett, Mateus R Amorim, Ludmila Lima-Silveira, Davi J A Moraes, Yaroslav I Molkov, Benedito H Machado

Open access · greenAbstract read
In one paragraph

Article in Neuroscience, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact, top 98% 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

4 citing papers in PubMed, 8 citations in OpenAlex.

  1. Article
  2. Review
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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 2 institutions in 2 countries.

George M P R SouzaDepartment of Physiology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil. Electronic address: gs4bd@virginia.edu.
William H BarnettDepartment of Mathematics and Statistics & Neuroscience Institute, Georgia State University, Atlanta, GA, United States of America.
Mateus R AmorimDepartment of Physiology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
Ludmila Lima-SilveiraDepartment of Physiology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
Davi J A MoraesDepartment of Physiology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
Yaroslav I MolkovDepartment of Mathematics and Statistics & Neuroscience Institute, Georgia State University, Atlanta, GA, United States of America.
Benedito H MachadoDepartment of Physiology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil.
Universidade de São Paulo · BRGeorgia State University · US

Funding

Modeling Brainstem Inflammation's Role in Systemic Dysfunction during SepsisU01EB021960 · NIBIB · CASE WESTERN RESERVE UNIVERSITY · PI DICK, THOMAS E · 2017 to 2020
$2.6M
CRCNS: Modeling the respiratory-sympathetic coupling in neurogenic hypertensionR01AT008632 · NCCIH · INDIANA UNIVERSITY INDIANAPOLIS · PI MOLKOV, YAROSLAV · 2015 to 2019
$1.4M
NCCIH NIH HHS R01 AT008632NIBIB NIH HHS U01 EB021960
6 · The paper itself

Abstract

Obstructive sleep apnea patients face episodes of chronic intermittent hypoxia (CIH), which has been suggested as a causative factor for increased sympathetic activity (SNA) and hypertension. Female rats exposed to CIH develop hypertension and exhibit changes in respiratory-sympathetic coupling, marked by an increase in the inspiratory modulation of SNA. We tested the hypothesis that enhanced inspiratory-modulation of SNA is dependent on carotid bodies (CBs) and are associated with changes in respiratory network activity. For this, in CIH-female rats we evaluated the effect of CBs ablation on respiratory-sympathetic coupling, recorded from respiratory neurons in the working heart-brainstem preparation and from NTS neurons in brainstem slices. CIH-female rats had an increase in peripheral chemoreflex response and in spontaneous excitatory neurotransmission in NTS. CBs ablation prevents the increase in inspiratory modulation of SNA in CIH-female rats. Pre-inspiratory/inspiratory (Pre-I/I) neurons of CIH-female rats have a reduced firing frequency. Post-inspiratory neurons are active for a longer period during expiration in CIH-female rats. Further, using the computational model of a brainstem respiratory-sympathetic network, we demonstrate that a reduction in Pre-I/I neuron firing frequency simulates the enhanced inspiratory SNA modulation in CIH-female rats. We conclude that changes in respiratory-sympathetic coupling in CIH-female rats is dependent on CBs and it is associated with changes in firing properties of specific respiratory neurons types.

Indexed as

AnimalsCarotid BodyExcitatory Postsynaptic PotentialsFemaleHypoxiaInhalationNerve NetNeuronsRatsRats, Wistarcarotid bodieschronic intermittent hypoxiarespiratory neuronssympathetic activity

Identifiers

PMID30930131
PMCPMC6511497
OpenAlexW2926408118

What OpenQuestion holds

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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.