Question
How does polymorphism in xenobiotic metabolizing enzymes result in variation in response to the toxicants?
Answer :
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Polymorphism in xenobiotic metabolizing enzymes plays a significant role in determining the variation in an individual’s response to toxicants. Xenobiotic metabolizing enzymes are responsible for the biotransformation of foreign substances, including drugs, chemicals, and environmental pollutants, within the body. These enzymes primarily exist in the liver but are also present in other tissues. They work by altering the chemical structure of xenobiotics to facilitate their elimination from the body. These metabolic pathways are highly influenced by genetic variation, specifically polymorphisms, which result in functional differences in enzyme activity. Polymorphisms are variations in the DNA sequence that occur in more than 1% of a population. These genetic variations can lead to differences in the expression, activity, or function of xenobiotic metabolizing enzymes. As a result, individuals with different polymorphisms may metabolize toxicants at different rates, which can significantly impact the effectiveness
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