― The production of very low density lipoproteins (VLDL) by the liver results from very complex processes that involve coordinated mechanisms of both protein and lipid synthesis and packaging. Alterations in these metabolic functions can cause negative effects on the health of human subjects or animals. The objectives of this paper were to review the latest developments in the biolo- gical mechanisms of these processes and the role of nutritional and hormonal factors. The present study addresses the following issues: i) the main steps in the hepatic metabolism of lipids (long-chain fatty acids, triacylglycerols, phospholipids) and proteins (apolipoprotein B, microsomal transfer protein) primarily involved in the synthesis and secretion of VLDL particles; ii) the metabolic deviations of hepatic VLDL (hypo-and overproduction) in man, rodents and farm animals (poultry, dairy cows). liver / triacylglycerol / VLDL secretion / regulating factors / steatosis Rsum ― Rgulation de la synthse et de la scrtion des VLDL par le foie. La formation par le foie de particules de lipoprotines de trs basse densit de type VLDL implique un processus trs complexe qui ncessite la synthse et l'assemblage coordonns des constituants protiques et lipidiques. Le dysfonctionnement de cette fonction hpatique peut provoquer des effets nfastes sur la sant des sujets. Le but de cette revue est de prsenter les donnes les plus rcentes et les concepts actuels concernant les mcanismes mis en jeu dans ces processus, ainsi que le rle des facteurs de rgulation de type nutritionnel et hormonal. Les points majeurs abords dans cette synthse concer-
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Gruffat et al. (1996) studied this question.
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