Evidence map›Paper›PMID 31953234›Full record

ArticleRespiratory physiology & neurobiology2020

Kölliker-Fuse/Parabrachial complex mu opioid receptors contribute to fentanyl-induced apnea and respiratory rate depression.

Sandy E Saunders, Erica S Levitt

Abstract read
In one paragraph

Article in Respiratory physiology & neurobiology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
4.1field-weighted citation impact, top 5% 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

47 citing papers in PubMed, 62 citations in OpenAlex.

  1. Article
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  6. Opioids and Respiratory Related Consequences.Sleep medicine clinics · 2025
    Review
  7. Review
  8. Roles of peripheral and central µAmerican journal of physiology. Lung cellular and molecular physiology · 2025
    Article
  9. Article
  10. Endogenous opioids and the development of the mammalian respiratory control network.American journal of physiology. Lung cellular and molecular physiology · 2025
    Review
  11. Article
  12. CBPharmacological research · 2025
    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

2 authors at 1 institution in 1 country.

Sandy E SaundersDepartment of Pharmacology and Therapeutics, University of Florida, Gainesville, FL, 32610, United States; Center for Respiratory Research and Rehabilitation, University of Florida, Gainesville, FL, 32610, United States.
Erica S LevittDepartment of Pharmacology and Therapeutics, University of Florida, Gainesville, FL, 32610, United States; Center for Respiratory Research and Rehabilitation, University of Florida, Gainesville, FL, 32610, United States. Electronic address: erica.levitt@ufl.edu.
University of Florida · US

Funding

Neural basis of opioid-induced respiratory depressionR01DA047978 · NIDA · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI LEVITT, ERICA SAWYER · 2019 to 2023
$1.8M
Opioid effects on respiratory-controlling pontine neuronsR00DA038069 · NIDA · UNIVERSITY OF FLORIDA · PI LEVITT, ERICA SAWYER · 2017 to 2019
$747k
Opioid effects on respiratory-controlling pontine neuronsK99DA038069 · NIDA · OREGON HEALTH & SCIENCE UNIVERSITY · PI LEVITT, ERICA SAWYER · 2015 to 2016
$179k
NIDA NIH HHS K99 DA038069NIDA NIH HHS R00 DA038069NIDA NIH HHS R01 DA047978
6 · The paper itself

Abstract

Overdoses caused by the opioid agonist fentanyl have increased exponentially in recent years. Identifying mechanisms to counter progression to fatal respiratory apnea during opioid overdose is desirable, but difficult to study in vivo. The pontine Kölliker-Fuse/Parabrachial complex (KF/PB) provides respiratory drive and contains opioid-sensitive neurons. The contribution of the KF/PB complex to fentanyl-induced apnea was investigated using the in situ arterially perfused preparation of rat. Systemic application of fentanyl resulted in concentration-dependent respiratory disturbances. At low concentrations, respiratory rate slowed and subsequently transitioned to an apneustic-like, 2-phase pattern. Higher concentrations caused prolonged apnea, interrupted by occasional apneustic-like bursts. Application of CTAP, a selective mu opioid receptor antagonist, directly into the KF/PB complex reversed and prevented fentanyl-induced apnea by increasing the frequency of apneustic-like bursting. These results demonstrate that countering opioid effects in the KF/PB complex is sufficient to restore phasic respiratory output at a rate similar to pre-fentanyl conditions, which could be beneficial in opioid overdose.

Indexed as

Analgesics, OpioidAnimalsApneaFemaleFentanylKolliker-Fuse NucleusMaleNarcotic AntagonistsParabrachial NucleusRatsRats, Sprague-DawleyReceptors, Opioid, muRespiratory RateAnalgesics, OpioidFentanylNarcotic AntagonistsReceptors, Opioid, muKölliker-FuseMu opioidPonsRespiratory depression

Identifiers

PMID31953234
PMCPMC7050369
OpenAlexW3000300429

What OpenQuestion holds

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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.