QUINACRINE IS MAINLY METABOLIZED TO MONO-DESETHYL QUINACRINE BY CYP3A4/5 AND ITS BRAIN ACCUMULATION IS LIMITED BY P-GLYCOPROTEIN
@article{Huang2006QUINACRINEIM, title={QUINACRINE IS MAINLY METABOLIZED TO MONO-DESETHYL QUINACRINE BY CYP3A4/5 AND ITS BRAIN ACCUMULATION IS LIMITED BY P-GLYCOPROTEIN}, author={Yong Huang and Hideaki Okochi and Barnaby C. H. May and Giuseppe Legname and Stanley B. Prusiner and Leslie Z. Benet and B. Joseph Guglielmo and Emil T. Lin}, journal={Drug Metabolism and Disposition}, year={2006}, volume={34}, pages={1136 - 1144} }
Quinacrine (QA), an antimalarial drug used for over seven decades, has been found to have potent antiprion activity in vitro. To determine whether QA can be used to treat prion diseases, we investigated its metabolism and ability to traverse the blood-brain barrier in mice. In vitro and in vivo, we identified by liquid chromatography-tandem mass spectrometry the major metabolic pathway of QA as N-desethylation and compared our results with an authentic reference compound. The major human…
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References
SHOWING 1-10 OF 30 REFERENCES
Uptake and Efflux of Quinacrine, a Candidate for the Treatment of Prion Diseases, at the Blood-Brain Barrier
- BiologyCellular and Molecular Neurobiology
- 2004
It is suggested that quinacrine transport at the blood–brain barrier is mediated by the efflux system (P-gp) and the influx system (organic cation transporter-like machinery).
Toxicity of Quinacrine Can Be Reduced By Co-Administration of P-Glycoprotein Inhibitor in Sporadic Creutzfeldt-Jakob Disease
- MedicineCellular and Molecular Neurobiology
- 2004
Low-dose quinacrine with verapamil can be used as safe treatment of CJD and improvement of clinical findings was observed at the same level without any adverse effects.
Hepatic microsome studies are insufficient to characterize in vivo hepatic metabolic clearance and metabolic drug-drug interactions: studies of digoxin metabolism in primary rat hepatocytes versus microsomes.
- Biology, MedicineDrug metabolism and disposition: the biological fate of chemicals
- 2004
The results strongly suggest that the hepatic uptake and efflux transporters that are found in hepatocytes, but not in microsomes, modulate intracellular concentration of digoxin and thus affect metabolism.
A possible pharmacological explanation for quinacrine failure to treat prion diseases: pharmacokinetic investigations in a ovine model of scrapie
- Biology, MedicineBritish journal of pharmacology
- 2005
Investigation of possible pharmacokinetic and/or pharmacodynamic explanations for the discrepancy between the proven action of quinacrine in vitro and its lack of clinical efficacy concluded that the measurement in vitro of the antiprion EC50 in both intra‐ and extracellular biophases should be determined to avoid in vivo trials for which failure can be predicted.
Evaluation of Quinacrine Treatment for Prion Diseases
- BiologyJournal of Virology
- 2003
Despite its ability to cross the blood-brain barrier, the use of quinacrine for the treatment of CJD is questionable, at least as a monotherapy, and the multistep experimental approach employed here could be used to test new therapeutic regimes before their use in human trials.
Pharmacokinetics of quinacrine in the treatment of prion disease
- Biology, MedicineBMC infectious diseases
- 2004
If quinacrine penetrates brain tissue in concentrations exceeding that demonstrated for in vitro inhibition of PrPSc, it may be useful in the treatment of prion disease, and particularly extensive distribution was observed in spleen and liver tissue.
Acridine and phenothiazine derivatives as pharmacotherapeutics for prion disease
- Chemistry, BiologyProceedings of the National Academy of Sciences of the United States of America
- 2001
It is reported here that tricyclic derivatives of acridine and phenothiazine exhibit half-maximal inhibition of PrPSc formation at effective concentrations (EC50) between 0.3 μM and 3 μM in cultured cells chronically infected with prions.
Urinary metabolism of chloroquine.
- Chemistry, MedicineArzneimittel-Forschung
- 1987
The study gave no evidence for a dose-dependent formation of the three previously unknown metabolites ofchloroquine, and an artifact generated from chloroquine-N-oxide could be characterized by gas chromatography/mass spectrometry.
Effect of Aliphatic Side-Chain Substituents on the Antimalarial Activity and on the Metabolism of Primaquine Studied Using Mitochondria and Microsome Preparations
- Biology, ChemistryPharmaceutical Research
- 2004
Primaquine, the α-dideutero analogue, and theα-methyl analogue were all found to have about the same in vitro antimalarial activity as determined in the liver hepatocyte assay.
Results of Quinacrine Administration to Patients with Creutzfeldt-Jakob Disease
- MedicineDementia and Geriatric Cognitive Disorders
- 2004
Although its antiprion activity in the human brain has yet to be proved, these modest effects of quinacrine suggest the possibility of using chemical intervention against prion diseases.