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Bijland, S.; Berg, S.A.A. van den; Voshol, P.J.; Hoek, A.M. van den; Princen, H.M.G.; Havekes, L.M.; ... ; Dijk, K.W. van (2010)

CETP does not affect triglyceride production or clearance in APOE*3-Leiden mice

Article / Letter to editor
The cholesteryl ester transfer protein (CETP) facilitates the bidirectional transfer of cholesteryl esters and triglycerides (TG) between HDL and (V) LDL. By shifting cholesterol in plasma from HDL to (V) LDL in exchange for VLDL-TG, CETP aggravates atherosclerosis in hyperlipidemic APOE*3-Leiden (E3L) mice. The aim of this study was to investigate the role of CETP in TG metabolism and high-fat diet-induced obesity by using E3L mice with and without the expression of the human CETP gene. On chow, plasma lipid levels were comparable between both male and female E3L and E3L. CETP mice. Further mechanistic studies were performed using male mice. CETP expression increased the level of TG in HDL. CETP did not affect the postprandial plasma TG response or the hepatic VLDL-TG and VLDL-apolipoprotein B production rate. Moreover, CETP did not affect the plasma TG clearance rate or organ-specific TG uptake after infusion of VLDL-like emulsion particles. In line with the absence of an effect...Show moreThe cholesteryl ester transfer protein (CETP) facilitates the bidirectional transfer of cholesteryl esters and triglycerides (TG) between HDL and (V) LDL. By shifting cholesterol in plasma from HDL to (V) LDL in exchange for VLDL-TG, CETP aggravates atherosclerosis in hyperlipidemic APOE*3-Leiden (E3L) mice. The aim of this study was to investigate the role of CETP in TG metabolism and high-fat diet-induced obesity by using E3L mice with and without the expression of the human CETP gene. On chow, plasma lipid levels were comparable between both male and female E3L and E3L. CETP mice. Further mechanistic studies were performed using male mice. CETP expression increased the level of TG in HDL. CETP did not affect the postprandial plasma TG response or the hepatic VLDL-TG and VLDL-apolipoprotein B production rate. Moreover, CETP did not affect the plasma TG clearance rate or organ-specific TG uptake after infusion of VLDL-like emulsion particles. In line with the absence of an effect of CETP on tissue-specific TG uptake, CETP also did not affect weight gain in response to a high-fat diet. In conclusion, the CETP-induced increase of TG in the HDL fraction of E3L mice is not associated with changes in the production of TG or with tissuespecific clearance of TG from the plasma.-Bijland, S., S. A. A. van den Berg, P. J. Voshol, A. M. van den Hoek, H. M. G. Princen, L. M. Havekes, P. C. N. Rensen, and K. Willems van Dijk. CETP does not affect triglyceride production or clearance in APOE*3-Leiden mice. J. Lipid Res. 2010. 51: 97-102Show less
cholesteryl ester transfer protein triglyceride metabolism HDL postprandial lipoproteins ester transfer protein high-density-lipoprotein apolipoprotein-a-i transgenic mice torcetrapib inhibition expression vldl vivo hypertriglyceridemia
All authors
Bijland, S.; Berg, S.A.A. van den; Voshol, P.J.; Hoek, A.M. van den; Princen, H.M.G.; Havekes, L.M.; Rensen, P.C.N.; Dijk, K.W. van
Date
2010-01-31
Journal
Journal of Lipid Research
Volume
51
Issue
1
Pages
97 - 102
DOI
doi:10.1194/jlr.M900186-JLR200