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Influence of insulin sensitivity and the TaqIB cholesteryl ester transfer protein gene polymorphism on plasma lecithin:cholesterol acyltransferase and lipid transfer protein activities and their response to hyperinsulinemia in non-diabetic men.
J Lipid Res. 1999 Aug; 40(8):1467-74.JL

Abstract

Lecithin:cholesteryl acyl transferase (LCAT), cholesteryl ester transfer protein (CETP), phospholipid transfer protein (PLTP), and lipoprotein lipases are involved in high density lipoprotein (HDL) metabolism. We evaluated the influence of insulin sensitivity and of the TaqIB CETP gene polymorphism (B1B2) on plasma LCAT, CETP, and PLTP activities (measured with exogenous substrates) and their responses to hyperinsulinemia. Thirty-two non-diabetic men without hyperlipidemia were divided in quartiles of high (Q(1)) to low (Q(4)) insulin sensitivity. Plasma total cholesterol, very low + low density lipoprotein cholesterol, triglycerides, and apolipoprotein (apo) B were higher in Q(4) compared to Q(1) (P < 0.05 for all), whereas HDL cholesterol and apoA-I were lowest in Q(4) (P < 0.05 for both). Plasma LCAT activity was higher in Q(4) than in Q(1) (P < 0. 05) and PLTP activity was higher in Q(4) than in Q(2) (P < 0.05). Insulin sensitivity did not influence plasma CETP activity. Postheparin plasma lipoprotein lipase activity was highest and hepatic lipase activity was lowest in Q(1). Insulin infusion decreased PLTP activity (P < 0.05), irrespective of the degree of insulin sensitivity. The CETP genotype exerted no consistent effects on baseline plasma lipoproteins and LCAT, CETP, and PLTP activities. The decrease in plasma PLTP activity after insulin was larger in B1B1 than in B2B2 homozygotes (P < 0.05). These data suggest that insulin sensitivity influences plasma LCAT, PLTP, lipoprotein lipase, and hepatic lipase activities in men. As PLTP, LCAT, and hepatic lipase may enhance reverse cholesterol transport, it is tempting to speculate that high levels of these factors in association with insulin resistance could be involved in an antiatherogenic mechanism. A possible relationship between the CETP genotype and PLTP lowering by insulin warrants further study.

Authors+Show Affiliations

Department of Endocrinology, Cardiovascular Research Institute (COEUR), Erasmus University, Rotterdam, The Netherlands.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

10428983

Citation

Riemens, S C., et al. "Influence of Insulin Sensitivity and the TaqIB Cholesteryl Ester Transfer Protein Gene Polymorphism On Plasma Lecithin:cholesterol Acyltransferase and Lipid Transfer Protein Activities and Their Response to Hyperinsulinemia in Non-diabetic Men." Journal of Lipid Research, vol. 40, no. 8, 1999, pp. 1467-74.
Riemens SC, Van Tol A, Stulp BK, et al. Influence of insulin sensitivity and the TaqIB cholesteryl ester transfer protein gene polymorphism on plasma lecithin:cholesterol acyltransferase and lipid transfer protein activities and their response to hyperinsulinemia in non-diabetic men. J Lipid Res. 1999;40(8):1467-74.
Riemens, S. C., Van Tol, A., Stulp, B. K., & Dullaart, R. P. (1999). Influence of insulin sensitivity and the TaqIB cholesteryl ester transfer protein gene polymorphism on plasma lecithin:cholesterol acyltransferase and lipid transfer protein activities and their response to hyperinsulinemia in non-diabetic men. Journal of Lipid Research, 40(8), 1467-74.
Riemens SC, et al. Influence of Insulin Sensitivity and the TaqIB Cholesteryl Ester Transfer Protein Gene Polymorphism On Plasma Lecithin:cholesterol Acyltransferase and Lipid Transfer Protein Activities and Their Response to Hyperinsulinemia in Non-diabetic Men. J Lipid Res. 1999;40(8):1467-74. PubMed PMID: 10428983.
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TY - JOUR T1 - Influence of insulin sensitivity and the TaqIB cholesteryl ester transfer protein gene polymorphism on plasma lecithin:cholesterol acyltransferase and lipid transfer protein activities and their response to hyperinsulinemia in non-diabetic men. AU - Riemens,S C, AU - Van Tol,A, AU - Stulp,B K, AU - Dullaart,R P, PY - 1999/8/3/pubmed PY - 1999/8/3/medline PY - 1999/8/3/entrez SP - 1467 EP - 74 JF - Journal of lipid research JO - J Lipid Res VL - 40 IS - 8 N2 - Lecithin:cholesteryl acyl transferase (LCAT), cholesteryl ester transfer protein (CETP), phospholipid transfer protein (PLTP), and lipoprotein lipases are involved in high density lipoprotein (HDL) metabolism. We evaluated the influence of insulin sensitivity and of the TaqIB CETP gene polymorphism (B1B2) on plasma LCAT, CETP, and PLTP activities (measured with exogenous substrates) and their responses to hyperinsulinemia. Thirty-two non-diabetic men without hyperlipidemia were divided in quartiles of high (Q(1)) to low (Q(4)) insulin sensitivity. Plasma total cholesterol, very low + low density lipoprotein cholesterol, triglycerides, and apolipoprotein (apo) B were higher in Q(4) compared to Q(1) (P < 0.05 for all), whereas HDL cholesterol and apoA-I were lowest in Q(4) (P < 0.05 for both). Plasma LCAT activity was higher in Q(4) than in Q(1) (P < 0. 05) and PLTP activity was higher in Q(4) than in Q(2) (P < 0.05). Insulin sensitivity did not influence plasma CETP activity. Postheparin plasma lipoprotein lipase activity was highest and hepatic lipase activity was lowest in Q(1). Insulin infusion decreased PLTP activity (P < 0.05), irrespective of the degree of insulin sensitivity. The CETP genotype exerted no consistent effects on baseline plasma lipoproteins and LCAT, CETP, and PLTP activities. The decrease in plasma PLTP activity after insulin was larger in B1B1 than in B2B2 homozygotes (P < 0.05). These data suggest that insulin sensitivity influences plasma LCAT, PLTP, lipoprotein lipase, and hepatic lipase activities in men. As PLTP, LCAT, and hepatic lipase may enhance reverse cholesterol transport, it is tempting to speculate that high levels of these factors in association with insulin resistance could be involved in an antiatherogenic mechanism. A possible relationship between the CETP genotype and PLTP lowering by insulin warrants further study. SN - 0022-2275 UR - https://www.unboundmedicine.com/medline/citation/10428983/Influence_of_insulin_sensitivity_and_the_TaqIB_cholesteryl_ester_transfer_protein_gene_polymorphism_on_plasma_lecithin:cholesterol_acyltransferase_and_lipid_transfer_protein_activities_and_their_response_to_hyperinsulinemia_in_non_diabetic_men_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0022-2275(20)33389-7 DB - PRIME DP - Unbound Medicine ER -