JCI Insight Aorta and liver generated TMAO enhances trained immunity for increased inflammation via ER stress mitochondrial ROS glycolysis pathways L Carnitine intake and high trimethylamine N oxide plasma levels correlate with low aortic lesions in ApoE transgenic mice expressing CETP Atherosclerosis Is L acetyl carnitine helpful short term Intestinal microbiota metabolism of l carnitine, a nutrient in red meat, promotes atherosclerosis Nature Medicine