Impact of Plasma Lipids on β Cell Function and Insulin Sensitivity

Participants will receive a 5 h primed (375 mL/m2)-continuous (25 mL h-1 m-2) i.v. infusion of 20% fat emulsion (Intralipid 20%), together with a 5 h primed (28 µmol/kg)-continuous (0.28 µmol min-1 kg-1) infusion of 6,6-\[2H2\]glucose. After 2 h, participants will consume within 5 min an oral glucose drink consisting of 147 mL of 50% dextrose solution (wt/vol) enriched with 1.5 g of \[U-13C\] glucose.

Participants will receive a 5 h primed (375 mL/m2)-continuous (25 mL h-1 m-2) i.v. infusion of normal saline (Sodium Chloride 0.9%), together with a 5 h primed (28 µmol/kg)-continuous (0.28 µmol min-1 kg-1) infusion of 6,6-\[2H2\]glucose. After 2 h, participants will consume within 5 min an oral glucose drink consisting of 147 mL of 50% dextrose solution (wt/vol) enriched with 1.5 g of \[U-13C\] glucose.