In the metabolism of alcohol, high doses of aspirin& phenytoin, mechanism is –
**Core Concept**
The metabolism of alcohol involves the enzyme alcohol dehydrogenase, which converts ethanol into acetaldehyde. This process is also influenced by other enzymes and drugs that can either enhance or inhibit the activity of alcohol dehydrogenase.
**Why the Correct Answer is Right**
Alcohol is primarily metabolized in the liver by the enzyme alcohol dehydrogenase. Certain drugs, such as disulfiram, can inhibit this enzyme, leading to an accumulation of acetaldehyde and its toxic effects. However, when it comes to high doses of aspirin and phenytoin, they induce the enzyme cytochrome P450 2E1 (CYP2E1), which is involved in the metabolism of ethanol. By increasing the activity of CYP2E1, aspirin and phenytoin accelerate the metabolism of alcohol, potentially leading to a faster rate of intoxication and subsequent hangover.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not relevant to the metabolism of alcohol in the presence of aspirin and phenytoin.
* **Option B:** This option is incorrect because the metabolism of alcohol is not primarily affected by this mechanism.
**Clinical Pearl / High-Yield Fact**
Aspirin and phenytoin can accelerate the metabolism of alcohol, leading to a faster rate of intoxication and potentially increasing the risk of hangovers.
**Correct Answer:** C.