ArticleFrontiers in pharmacology2021
Systemic Administration of Tempol Attenuates the Cardiorespiratory Depressant Effects of Fentanyl.
Article in Frontiers in pharmacology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 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.
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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
20 citing papers in PubMed, 24 citations in OpenAlex.
- Precision Medicine: Therapeutically Targeting Mitochondrial Alterations in Heart Failure.JACC. Basic to translational science · 2025Review
- 'Comprehensive review of emerging drug targets in traumatic brain injury (TBI): challenges and future scope.Inflammopharmacology · 2024Review
- Opioids-Induced Long QT Syndrome: A Challenge to Cardiac Health.Cardiovascular toxicology · 2024Review
- L-cysteine ethylester reverses the adverse effects of morphine on breathing and arterial blood-gas chemistry while minimally affecting antinociception in unanesthetized rats.Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 2024Article
- The cell-permeant antioxidant D-thiol ester D-cysteine ethyl ester overcomes physical dependence to morphine in male Sprague Dawley rats.Frontiers in pharmacology · 2024Article
- The epigenetic signatures of opioid addiction and physical dependence are prevented by D-cysteine ethyl ester and betaine.Frontiers in pharmacology · 2024Article
- Fentanyl activates opposing opioid and non-opioid receptor systems that control breathing.Frontiers in pharmacology · 2024Article
- Tropine exacerbates the ventilatory depressant actions of fentanyl in freely-moving rats.Frontiers in pharmacology · 2024Article
- Hypercapnic signaling influences hypoxic signaling in the control of breathing in C57BL6 mice.Journal of applied physiology (Bethesda, Md. : 1985) · 2023Article
- Lipophilic analogues of D-cysteine prevent and reverse physical dependence to fentanyl in male rats.Frontiers in pharmacology · 2023Article
- Loss of ganglioglomerular nerve input to the carotid body impacts the hypoxic ventilatory response in freely-moving rats.Frontiers in physiology · 2023Article
- Hypoxia releases S-nitrosocysteine from carotid body glomus cells-relevance to expression of the hypoxic ventilatory response.Frontiers in pharmacology · 2023Article
- L-cysteine ethyl ester prevents and reverses acquired physical dependence on morphine in male Sprague Dawley rats.Frontiers in pharmacology · 2023Article
- Unique Pharmacology, Brain Dysfunction, and Therapeutic Advancements for Fentanyl Misuse and Abuse.Neuroscience bulletin · 2022Review
- Nitrosyl factors play a vital role in the ventilatory depressant effects of fentanyl in unanesthetized rats.Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 2022Article
- Systemic Administration of Tempol, a Superoxide Dismutase Mimetic, Augments Upper Airway Muscle Activity in Obese Zucker Rats.Frontiers in pharmacology · 2022Article
- S-Nitroso-L-Cysteine Stereoselectively Blunts the Deleterious Effects of Fentanyl on Breathing While Augmenting Antinociception in Freely-Moving Rats.Frontiers in pharmacology · 2022Article
- D-Cysteine Ethyl Ester Reverses the Deleterious Effects of Morphine on Breathing and Arterial Blood-Gas Chemistry in Freely-Moving Rats.Frontiers in pharmacology · 2022Article
- L-cysteine methyl ester overcomes the deleterious effects of morphine on ventilatory parameters and arterial blood-gas chemistry in unanesthetized rats.Frontiers in pharmacology · 2022Article
- Tempol Reverses the Negative Effects of Morphine on Arterial Blood-Gas Chemistry and Tissue Oxygen Saturation in Freely-Moving Rats.Frontiers in pharmacology · 2021Article
Corrections and comments
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Authors and funding
9 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Fentanyl is a high-potency opioid receptor agonist that elicits profound analgesia and suppression of breathing in humans and animals. To date, there is limited evidence as to whether changes in oxidant stress are important factors in any of the actions of acutely administered fentanyl. This study determined whether the clinically approved superoxide dismutase mimetic, Tempol (4-hydroxy-2,2,6,6-tetramethylpiperidine-N-oxyl), or a potent antioxidant, N-acetyl-L-cysteine methyl ester (L-NACme), modify the cardiorespiratory and analgesic actions of fentanyl. We examined whether the prior systemic injection of Tempol or L-NACme affects the cardiorespiratory and/or analgesic responses elicited by the subsequent injection of fentanyl in isoflurane-anesthetized and/or freely moving male Sprague-Dawley rats. Bolus injections of Tempol (25, 50 or 100 mg/kg, IV) elicited minor increases in frequency of breathing, tidal volume and minute ventilation. The ventilatory-depressant effects of fentanyl (5 μg/kg, IV) given 15 min later were dose-dependently inhibited by prior injections of Tempol. Tempol elicited dose-dependent and transient hypotension that had (except for the highest dose) resolved when fentanyl was injected. The hypotensive responses elicited by fentanyl were markedly blunted after Tempol pretreatment. The analgesic actions of fentanyl (25 μg/kg, IV) were not affected by Tempol (100 mg/kg, IV). L-NACme did not modify any of the effects of fentanyl. We conclude that prior administration of Tempol attenuates the cardiorespiratory actions of fentanyl without affecting the analgesic effects of this potent opioid. As such, Tempol may not directly affect opioid-receptors that elicit the effects of fentanyl. Whether, the effects of Tempol are solely due to alterations in oxidative stress is in doubt since the powerful antioxidant, L-NACme, did not affect fentanyl-induced suppression of breathing.
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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.