Meptazinol entered the human pharmaceutical market as a racemic mixture in the 1980s for use as an analgesic.
Meptazinol entered the human pharmaceutical market as a racemic mixture in the 1980s for use as an analgesic. Its pharmacology is not completely understood; however, its analgesic properties are mostly due to its partial agonism at the mu1 opioid receptor. Due to its partial agonism, Meptazinol antagonizes morphine dependence in vivo. Its advantage over other opiates is its reduced capacity to cause addition and respiratory depression, also due to its intrinsic activity as a partial agonist. Meptazinol has been found to have additional activity as an acetylcholinesterase (AChE) inhibitor, particularly in its (-) enantiomeric form, which may partially explain its analgesic properties. AChE inhibitors are used to treat Alzheimer′s disease, providing additional interest in this compound.
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This compound is featured on the Opioid Receptors page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.
This compound was developed by Wyeth. To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here.
The Journal of pharmacy and pharmacology, 43(5), 366-369 (1991-05-01)
The protective action of meptazinol against acute di-isopropyl fluorophosphate (DFP) intoxication has been evaluated in mice by measuring the effects on the DFP LD50 of the pretreatment of the animals with increasing doses of the drug. Meptazinol at the doses
To investigate the mechanism of action of a potent analgesic, (+/-)-meptazinol. The structures of meptazinol enantiomers were compared with opioid pharmacophore and tramadol. Neither enantiomer of meptazinol fitted any patterns among the opioid pharmacophore and tramadol, although they did share
European journal of anaesthesiology, 24(1), 53-58 (2006-07-13)
To evaluate the different potencies of several opioids in obtunding reflex mechanisms of laryngoscopy and intubation. Three groups of patients (each n = 25, ASA 1-2) undergoing elective plastic surgery were randomly given meptazinol (2.5 mg kg-1), nalbuphine (0.3 mg
Three meptazinol benzoyl esters (1-3) were synthesized as prodrugs to minimize the first-pass effect of meptazinol and improve the bioavailability. Among these three esters, compound 3 showed better bioavailability than the parent meptazinol. Further, the relative regional bioavailability of prodrug
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 881-882, 126-130 (2011-12-30)
A rapid, simple and sensitive LC-MS/MS method was developed and validated for the determination of Bis(9)-(-)-Meptazinol (B9M) in rat plasma. Protein precipitation method was used for sample preparation, using five volumes of methanol as the precipitation agent. The analytes were
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