Evidence map›Paper›PMID 34673011›Full record

ArticleBiochemical pharmacology2022

Respiratory depressant effects of fentanyl analogs are opioid receptor-mediated.

Neil B Varshneya, Sherif H Hassanien, Melissa C Holt, David L Stevens, Nathan K Layle, Jonathon R Bassman, Donna M Iula, Patrick M Beardsley

Open access · greenAbstract read
In one paragraph

Article in Biochemical pharmacology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
6.3field-weighted citation impact, top 2% 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

32 citing papers in PubMed, 55 citations in OpenAlex.

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  15. Fentanyl overdose: Temporal effects and prognostic factors in SKH1 mice.Basic & clinical pharmacology & toxicology · 2024
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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

8 authors at 3 institutions in 1 country.

Neil B VarshneyaBehavioral Pharmacology Research Unit, Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Pharmacology and Toxicology, Virginia Commonwealth University School of Medicine, Richmond, VA, USA. Electronic address: nvarshn2@jhmi.edu.
Sherif H HassanienForensic Chemistry Division, Cayman Chemical Company, Ann Arbor, MI, USA.
Melissa C HoltForensic Chemistry Division, Cayman Chemical Company, Ann Arbor, MI, USA.
David L StevensDepartment of Pharmacology and Toxicology, Virginia Commonwealth University School of Medicine, Richmond, VA, USA.
Nathan K LayleForensic Chemistry Division, Cayman Chemical Company, Ann Arbor, MI, USA.
Jonathon R BassmanForensic Chemistry Division, Cayman Chemical Company, Ann Arbor, MI, USA.
Donna M IulaForensic Chemistry Division, Cayman Chemical Company, Ann Arbor, MI, USA.
Patrick M BeardsleyDepartment of Pharmacology and Toxicology, Virginia Commonwealth University School of Medicine, Richmond, VA, USA; Center for Biomarker Research & Precision Medicine, Virginia Commonwealth University School of Pharmacy, Richmond, VA, USA.
Cayman Chemical (United States) · USVirginia Commonwealth University · USJohns Hopkins University · US

Funding

TRAINING IN THE PHARMACOLOGY OF ABUSED DRUGST32DA007027 · NIDA · VIRGINIA COMMONWEALTH UNIVERSITY · PI William L. Dewey · 1985 to 2026
$14.7M
VCU Center for Drug Addiction ResearchP30DA033934 · NIDA · VIRGINIA COMMONWEALTH UNIVERSITY · PI Matthew Sean Halquist · 2014 to 2026
$13.8M
NIDA NIH HHS HHSN271201700008CNIDA NIH HHS P30 DA033934NIDA NIH HHS T32 DA007027
6 · The paper itself

Abstract

Opioid-related fatalities involving synthetic opioids have reached unprecedented levels. This study evaluated the respiratory depressant effects of seven fentanyl analogs that have either emerged in the illicit drug supply or been identified in toxicological analyses following fatal or non-fatal intoxications. Adult male Swiss Webster mice were administered fentanyl analogs (isobutyrylfentanyl, crotonylfentanyl, para-methoxyfentanyl, para-methoxybutyrylfentanyl, 3-furanylfentanyl, thiophenefentanyl, and benzodioxolefentanyl) and their effects on minute volume as compared to mu-opioid receptor (MOR) agonist standards (fentanyl, morphine, and buprenorphine) were measured using whole body plethysmography (WBP). All drugs elicited significant (p ≤ 0.05) hypoventilation relative to vehicle for at least one dose tested: morphine (1, 3.2, 10, 32 mg/kg), buprenorphine, (0.032, 0.1, 0.32, 1, 3.2 mg/kg), fentanyl (0.0032, 0.01, 0.032, 0.1, 1, 32 mg/kg), isobutyrylfentanyl (0.1, 0.32, 1, 3.2, 10 mg/kg), crotonylfentanyl (0.1, 0.32, 1, 3.2, 10 mg/kg), para-methoxyfentanyl (0.1, 0.32, 1, 3.2, 10 mg/kg), para-methoxybutyrylfentanyl (0.32, 1, 3.2, 10 mg/kg), 3-furanylfentanyl (0.1, 0.32, 1, 3.2, 10 mg/kg), thiophenefentanyl (1, 3.2, 10, 32, 100 mg/kg), and benzodioxolefentanyl (3.2, 10, 32, 100 mg/kg). The ED

Indexed as

AnimalsFentanylHypoventilationMaleMiceMolecular StructureNaloxoneNarcotic AntagonistsPlethysmographyReceptors, Opioid, muRespiratory MechanicsFentanylNaloxoneNarcotic AntagonistsReceptors, Opioid, muFentanyl analogHypoventilationMicePharmacologyRespiratory depressionSynthetic opioid

Identifiers

PMID34673011
PMCPMC9022371
OpenAlexW3206531773

What Socratic 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 Socratic graph.