Results 91 to 100 of about 659,970 (390)

Interactions of the opioid and cannabinoid systems in reward: Insights from knockout studies

open access: yesFrontiers in Pharmacology, 2015
The opioid system consists of three receptors, mu, delta, and kappa, which are activated by endogenous opioid peptides (enkephalins, endorphins and dynorphins). The endogenous cannabinoid system comprises lipid neuromodulators (endocannabinoids), enzymes
Katia eBefort
doaj   +1 more source

Opioid Receptor-Mediated Regulation of Neurotransmission in the Brain

open access: yesFrontiers in Molecular Neuroscience, 2022
Opioids mediate their effects via opioid receptors: mu, delta, and kappa. At the neuronal level, opioid receptors are generally inhibitory, presynaptically reducing neurotransmitter release and postsynaptically hyperpolarizing neurons.
Kaitlin C. Reeves   +6 more
doaj   +1 more source

Ingested bovine amniotic fluid enhances morphine antinociception in rats [PDF]

open access: yes, 2000
Ingestion by rats of rat placenta or amniotic fluid enhances opioid-mediated, or partly opioid-mediated, antinociception produced by morphine injection, vaginal or cervical stimulation, late pregnancy, and foot shock.
Corpening, James W.   +2 more
core   +1 more source

Opioid Abuse in Chronic Pain--Misconceptions and Mitigation Strategies.

open access: yesNew England Journal of Medicine, 2016
Chronic pain not caused by cancer is among the most prevalent and debilitating medical conditions but also among the most controversial and complex to manage.
Dan L. Longo, N. Volkow, A. Mclellan
semanticscholar   +1 more source

Calcitonin Gene‐Related Peptide (CGRP)‐Expressing Neurons in the External Lateral Parabrachial Area Regulate Pain‐Induced Sleep Disturbances

open access: yesAdvanced Science, EarlyView.
Lynch et al., identified novel targets on the wake‐promoting pathways that can effectively treat pain‐induced sleep disturbances. The authors demonstrated that Calcitonin gene‐related peptide‐expressing neurons (CGRP) in the external lateral parabrachial nucleus (PBelCGRP) serve as the primary relay node for pain stimuli that cause sleep disruption ...
Nicole Lynch   +13 more
wiley   +1 more source

Cellular Tolerance Induced by Chronic Opioids in the Central Nervous System

open access: yesFrontiers in Systems Neuroscience, 2022
Opioids are powerful analgesics that elicit acute antinociceptive effects through their action the mu opioid receptor (MOR). However opioids are ineffective for chronic pain management, in part because continuous activation of MORs induces adaptive ...
Sweta Adhikary, John T. Williams
doaj   +1 more source

Nitrous Oxide: Mechanism of Its Antinociceptive Action [PDF]

open access: yes, 1995
Nitrous oxide (N2O) is an anesthetic gas known to produce an analgesic effect at sub-anesthetic concentrations. This analgesic property of N2O can be clinically exploited in a broad range of conditions where pain relief is indicated.
Quock, Raymond M., Vaughn, Linda K.
core   +1 more source

Incidence of and Risk Factors for Chronic Opioid Use Among Opioid-Naive Patients in the Postoperative Period.

open access: yesJAMA Internal Medicine, 2016
IMPORTANCE Chronic opioid use imposes a substantial burden in terms of morbidity and economic costs. Whether opioid-naive patients undergoing surgery are at increased risk for chronic opioid use is unknown, as are the potential risk factors for chronic ...
E. Sun, B. Darnall, L. Baker, S. Mackey
semanticscholar   +1 more source

Weight Cycling Deregulates Eating Behavior in Mice via the Induction of Durable Gut Dysbiosis

open access: yesAdvanced Science, EarlyView.
Weight cycling in Humans is suspected to dysregulate eating behavior. Mice submitted to body weight cycling by alternating western‐type and regular chow diets display increased hedonic appetite when exposed to a palatable diet, reminiscent of binge‐eating episodes.
Mélanie Fouesnard   +13 more
wiley   +1 more source

Study assessing the effectiveness of overdose prevention centers through evaluation research (SAFER): an overview of the study protocol

open access: yesHarm Reduction Journal
More than one million people have died from drug overdose in the United States in the past 20 years. The overdose crisis started in the late 1990s with the proliferation of overdoses involving prescription opioids, transitioned to heroin-involved ...
Magdalena Cerdá   +6 more
doaj   +1 more source

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