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Correct Answer: tobramycin
the question asks which of the listed options is considered an aminoglycoside. aminoglycosides are a class of antibiotics used primarily to treat bacterial infections. they are particularly effective against aerobic gram-negative bacteria and are known for their ability to inhibit protein synthesis by binding to the bacterial 30s ribosomal subunit, causing a misreading of mrna. this mechanism disrupts bacterial growth and leads to cell death.
among the options listed:
- coreg is not an aminoglycoside; it is the brand name for carvedilol, a medication used primarily for treating high blood pressure and heart failure.
- tobramycin, on the other hand, is indeed an aminoglycoside. it is commonly used in the treatment of various types of bacterial infections, including those affecting the eyes, lungs, and skin. tobramycin is effective due to its action on the bacterial ribosomal subunit, as mentioned earlier.
- furosemide is not an aminoglycoside; it is a loop diuretic, often known by its brand name lasix, used to treat fluid build-up due to heart failure, liver scarring, or kidney disease.
- dyazide is also not an aminoglycoside; it is a combination of hydrochlorothiazide and triamterene and is used to treat hypertension and edema by helping the body get rid of excess fluid.
therefore, the correct answer from the list provided, which is considered an aminoglycoside, is tobramycin. tobramycin belongs to the same class as other notable aminoglycosides such as amikacin, gentamicin, paromomycin, kanamycin, and neomycin, all of which share similar antibacterial properties and mechanisms of action.
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