Vincristine toxicity most commonly affects which body system?

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Multiple Choice

Vincristine toxicity most commonly affects which body system?

Explanation:
Vincristine is a microtubule inhibitor, and its most common toxic effect targets the nervous system because neurons rely on intact microtubules for axonal transport. By blocking tubulin polymerization, vincristine disrupts this transport, leading to peripheral neuropathy—numbness, tingling, weakness, and decreased reflexes in the hands and feet. It can also cause autonomic neuropathy, resulting in constipation or ileus. This neurotoxicity is dose-limiting and more characteristic of vincristine than damage to the liver, heart, or lungs, which are not its usual primary toxicities.

Vincristine is a microtubule inhibitor, and its most common toxic effect targets the nervous system because neurons rely on intact microtubules for axonal transport. By blocking tubulin polymerization, vincristine disrupts this transport, leading to peripheral neuropathy—numbness, tingling, weakness, and decreased reflexes in the hands and feet. It can also cause autonomic neuropathy, resulting in constipation or ileus. This neurotoxicity is dose-limiting and more characteristic of vincristine than damage to the liver, heart, or lungs, which are not its usual primary toxicities.

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