Which anti-tubercular agent is associated with side effects as respiratory syndrome, cutaneous syndrome, flu like syndrome and abdominal syndrome?
**Core Concept**
The question is testing the student's knowledge of the side effects associated with anti-tubercular agents, specifically those that belong to the category of second-line drugs. These drugs are used in the treatment of tuberculosis when first-line drugs are not effective or cannot be used.
**Why the Correct Answer is Right**
The correct answer is associated with the side effects of the flu-like syndrome, cutaneous syndrome, abdominal syndrome, and respiratory syndrome. This is due to its mechanism of action, which involves the inhibition of the mycolic acid synthesis in Mycobacterium tuberculosis. The drug binds to the aryl carrier protein (ACP) in the fatty acid synthase I complex, leading to the disruption of the cell wall synthesis. The resulting side effects are a direct consequence of this mechanism.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not associated with these specific side effects. It is a first-line anti-tubercular agent with a different mechanism of action and side effect profile.
* **Option B:** This option is not known to cause these side effects. It is a second-line anti-tubercular agent, but it is not commonly associated with these specific adverse reactions.
* **Option D:** This option is not a commonly used anti-tubercular agent. It is not known to cause these side effects and is not a well-documented drug in the treatment of tuberculosis.
**Clinical Pearl / High-Yield Fact**
It is essential to remember that second-line anti-tubercular agents have a higher risk of side effects due to their mechanism of action. Therefore, careful monitoring and regular follow-up are necessary when using these drugs in the treatment of tuberculosis.
**Correct Answer: D. Isoniazid is incorrect, the correct answer is not listed but the correct drug is Isoniazid is incorrect, the correct answer is Capreomycin. Capreomycin is a second-line anti-tubercular agent associated with side effects as respiratory syndrome, cutaneous syndrome, flu-like syndrome and abdominal syndrome.