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Ohmefentanyl--a new agonist for mu-opiate receptor
Scientia Sinica. Series B, Chemical, Biological, Agricultural, Medical & Earth Sciences
|May 1, 1985
Summary
Ohmefentanyl is a powerful synthetic analgesic, 6300 times more potent than morphine in mice. This study demonstrates its potent mu-agonist properties through binding assays, suggesting therapeutic potential.
Area of Science:
- Pharmacology
- Neuroscience
- Medicinal Chemistry
Background:
- Ohmefentanyl is a potent synthetic analgesic.
- Its analgesic potency in mice is 6300 times greater than morphine.
- Ohmefentanyl exhibits agonist properties, indicated by reduced binding affinity with Na+ and GTP.
Purpose of the Study:
- To investigate the binding characteristics of 3H-ohmefentanyl in the mouse brain.
- To determine the opiate receptor subtype selectivity of ohmefentanyl.
Main Methods:
- Radioligand binding assays using 3H-ohmefentanyl and 3H-naloxone.
- Scatchard analysis to characterize binding sites.
- Competitive binding assays with various opiate and non-opiate drugs.
Main Results:
- Specific, saturable, and reversible binding of 3H-ohmefentanyl was observed in mouse brain P2 fraction.
- Scatchard analysis revealed two classes of binding sites with KD1 = 0.32nM and KD2 = 3.91nM.
- Ohmefentanyl demonstrated potent mu-agonist properties, with significantly higher affinity for mu-opiate receptors compared to delta-opiate receptors.
Conclusions:
- Ohmefentanyl is a highly potent mu-agonist opioid analgesic.
- Its binding profile suggests a strong interaction with mu-opiate receptors.
- Further research into ohmefentanyl's therapeutic applications is warranted.