ArticleNeuropharmacology2023
Binding preference at the μ-opioid receptor underlies distinct pharmacology of cyclopropyl versus valeryl analogs of fentanyl.
Article in Neuropharmacology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
What it found
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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.
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.
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Who cites it
10 citing papers in PubMed, 16 citations in OpenAlex.
- Antinociceptive Effect and Hyperalgesia of Fentanyl and Its Analogues.International journal of molecular sciences · 2026Article
- Fentanyl blockade of KThe Journal of physiology · 2026Article
- Recommended Opioid Receptor Tool Compounds: ComparativeACS pharmacology & translational science · 2025Article
- Reinforcing effects of fentanyl analogs found in illicit drug markets.Psychopharmacology · 2024Article
- Review
- In Vitro Functional Profiling of Fentanyl and Nitazene Analogs at the μ-Opioid Receptor Reveals High Efficacy for Gi Protein Signaling.ACS chemical neuroscience · 2024Article
- The Molecular Mechanism of Positive Allosteric Modulation at the Dopamine D1 Receptor.International journal of molecular sciences · 2023Article
- The molecular mechanism of positive allosteric modulation at the dopamine D1 receptor.bioRxiv : the preprint server for biology · 2023Article
- Fentanyl analog structure-activity relationships demonstrate determinants of diverging potencies for antinociception and respiratory depression.Pharmacology, biochemistry, and behavior · 2023Article
- Three-Dimensional Structural Insights Have Revealed the Distinct Binding Interactions of Agonists, Partial Agonists, and Antagonists with the µ Opioid Receptor.International journal of molecular sciences · 2023Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors at 3 institutions in 1 country.
Funding
Abstract
Illicitly manufactured fentanyl is driving the current opioid crisis, and various fentanyl analogs are appearing in recreational drug markets worldwide. To assess the potential health risks posed by fentanyl analogs, it is necessary to understand structure-activity relationships for these compounds. Here we compared the pharmacology of two structurally related fentanyl analogs implicated in opioid overdose: cyclopropylfentanyl and valerylfentanyl. Cyclopropylfentanyl has a three-carbon ring attached to the carbonyl group on the fentanyl scaffold, whereas valerylfentanyl has a four-carbon chain at the same position. In vitro assays examining μ-opioid receptor (MOR) coupling to G proteins in CHO cells showed that cyclopropylfentanyl is a full agonist (EC
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Registered trials
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.