Endogenous opioid and cannabinoid systems contribute to antinociception produced by administration of NSAIDs into the insular cortex of rats
| Autor: | Irine Kvachadze, Nana Tsiklauri, Natia Tsagareli, Merab G. Tsagareli |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Male Nociception Cannabinoid receptor medicine.drug_class medicine.medical_treatment RM1-950 (+)-Naloxone Pharmacology Insular cortex 03 medical and health sciences Descending modulation 0302 clinical medicine Piperidines Opioid receptor medicine Animals Withdrawal reflexes Rats Wistar Endogenous opioid Cerebral Cortex business.industry Naloxone Anti-Inflammatory Agents Non-Steroidal General Medicine Non-opioids Rats 030104 developmental biology Opioid Peptides Hyperalgesia 030220 oncology & carcinogenesis Pyrazoles Therapeutics. Pharmacology Cannabinoid medicine.symptom Analgesia business Somatostatin psychological phenomena and processes Endocannabinoids |
| Zdroj: | Biomedicine & Pharmacotherapy, Vol 131, Iss, Pp 110722-(2020) |
| ISSN: | 1950-6007 |
| Popis: | Pain sensation is characterized as a complex experience, dependent on sensory processes as well as the activation of limbic brain areas involved in emotion, among them anterior insula. This cortical area is involved in the perception and response to painful stimuli. We investigated if this area contributes to antinociception produced by NSAIDs, and underlying mechanisms. We found that administration of NSAIDs into the anterior insular cortex in rats reduced mechanical and heat hyperalgesia produced by intraplantar injection of formalin, and this was attenuated by pre- or post-treatment with the opioid receptor antagonists, naloxone and CTOP, and the cannabinoid receptor (CB1) antagonist AM-251. These data support the concept that NSAID-evoked antinociception is mediated via descending endogenous opioid and cannabinoid systems inhibiting spinal paw withdrawal reflexes in rodents. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect