Kinetic Study of Lp(a) and PCSK9 in Humans

A bolus of 6ml of \[5,5,5-2H3\] -L-leucine tracers will be performed followed by an infusion of 90 ml of \[5,5,5-2H3\] -L-leucine infused over 14 hours. This tracer participates in protein synthesis and especially in the synthesis of all apolipoproteins and PCSK9. Blood samples will be taken at T0, T2min, T5min, T10 minutes, T30 minutes and then every hour until 14 hours (a total of 240 ml of blood will be collected) to measure the stable tracer enrichment in the proteins of interest.