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Pharmacology · Antidiabetics: meglitinides
Sample itemRepaglinide and nateglinide are insulin secretagogues. Which characteristic distinguishes them from sulfonylureas?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
A. They have rapid onset and short duration, and are taken just before meals to reduce postprandial glucose
Meglitinides close the same K-ATP channel on the beta cell but bind a different site, and are rapidly absorbed with a short action, so they are taken with meals, with a lower risk of prolonged hypoglycaemia. They are useful in erratic eaters and in renal impairment.
Option by option
A. They have rapid onset and short duration, and are taken just before meals to reduce postprandial glucose (correct)
Correct. Short-acting prandial secretagogues.
B. They are long acting and taken once daily
They are short acting and taken with meals.
C. They act by activating PPAR-gamma
PPAR-gamma activation is the action of glitazones.
D. They inhibit DPP-4
DPP-4 inhibition describes gliptins.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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