We studied the effects of morphine and its potentiated form on nociceptive thresholds in rats with the morphine withdrawal syndrome. Repeated combination (bipathic) treatment with morphine and its potentiated form increased nociceptive threshold and, therefore, activated the nociceptive system in the brain.
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http://dx.doi.org/10.1023/a:1024711720418 | DOI Listing |
Pain
January 2025
Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States.
Reviews of the effectiveness of medicinal cannabis for chronic pain vary in their conclusions. IASP has identified that a key missing evidence in this debate is data from observational cohort studies, analyzed with comparative effectiveness methods. In a medically supervised context to the use of marijuana for chronic pain, we identified 440 patients certified for medical marijuana by pain specialists in a single healthcare system.
View Article and Find Full Text PDFPlast Surg (Oakv)
February 2025
Department of Anesthesiology and Critical Care Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA.
Opioid dependence can occur in 6% to 10% of patients undergoing breast reconstruction. With the expansion of interdisciplinary initiatives to decrease opioid use after surgery, an updated look at the incidence of and risk factors for prolonged opioid dependence after free flap breast reconstruction is essential. We retrospectively identified all cases of free flap breast reconstruction completed at our institution from 2017 to 2020.
View Article and Find Full Text PDFAims: We measured the association between prescribed stimulant medications and overdose among individuals receiving opioid agonist therapy (OAT) for opioid use disorder.
Design: Retrospective cohort study using the British Columbia Provincial Overdose Cohort, a linked administrative database.
Setting: We used data from British Columbia, Canada, from January 2015 through February 2020.
Fentanyl is a potent synthetic opioid widely used perioperatively and illicitly as a drug of abuse . It is well established that fentanyl acts as a μ-opioid receptor agonist, signaling through Gα intracellular pathways to inhibit electrical excitability, resulting in analgesia and respiratory depression . However, fentanyl uniquely also triggers muscle rigidity, including respiratory muscles, hindering the ability to execute central respiratory commands or to receive external resuscitation.
View Article and Find Full Text PDFJ Biochem Mol Toxicol
February 2025
Department of Cardiology, Affiliated Hospital of Hebei University, Baoding, China.
Ischemia-reperfusion (I/R) injury is a significant clinical problem impacting the heart and other organs, such as the kidneys and liver. This study explores the protective effects of oxycodone on myocardial I/R injury and its underlying mechanisms. Using a myocardial I/R model in Sprague-Dawley (SD) rats and an oxygen-glucose deprivation/reoxygenation (OGD/R) model in H9c2 cells, we administered oxycodone and inhibited AMP-activated protein kinase (AMPK) with Compound C (C.
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