This study investigated the in vivo effects on acetylcarnitine levels in the liver after an injection of L-carnitine. L-carnitine facilitates transport of fatty acids into the mitochondria. We show that a single injection of L-carnitine modulated acetylcarnitine levels in the liver and that it modulated several blood markers in the healthy volunteer. Further studies are needed to understand the plasma metabolic changes observed with L-carnitine supplementation.
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