Blog

What enzyme transfers electrons from NADPH to the CYP40 heme proteins using two tightly bound flavin cofactors?

For the reaction below:                                      Which of the following products is the result of a tertiary radical intermediate in the oxygen rebound mechanism?                   

Unlike G-protein coupled receptors, the AH and PXR receptors are located in the cytoplasm. Why?  

An epileptic patient who was stabilized on carbamazepine (800 mg/day) became severely depressed and was prescribed fluoxetine (SSRI) to treat the patient’s depressive disorder. After two weeks, neurotoxicity became apparent that was more suggestive of serotonin syndrome than of carbamazepine toxicity. A measurement of serum levels of fluoxetine showed 4 times the typical serum concentration.  Carbamazepine is a known inducer of CYP3A4.  Fluoxetine is chiefly metabolized by CYP2D6. The physician is considering switching antiseizure medications but it took considerable trial and error with multiple drugs to get the patient’s seizures under control.  Which of the following has the greatest likelihood of causing the elevated fluoxetine levels?   

True or false: John Cleese studies creativity in school.

Which of the following processes in xenobiotic metabolism is sometimes called “Phase 3” and involves transport proteins that are specific for polar metabolites?

What is the source of oxygen in the aldehyde dehydrogenase reaction?

What metabolite of ethanol builds up to toxic concentrations in persons who are homozygous for the ALDH2*2 allele?

Products marketed as “oxygen enhancers” aim to target which 5 variables? Please list all 5.

TRUE or FALSE: Athletes can develop a tolerance to caffeine and may see more benefit of caffeine use if they do a 7-10 day washout period preceding competition where no caffeine is consumed