title: Fish consumption shifts lipoprotein subfractions to a less atherogenic pattern in humans.
abstract: The effect of fish consumption on plasma lipoprotein subfraction concentrations was studied in 22 men and women (age > 40 y). Subjects were provided an average American diet (AAD, 35% of energy as fat, 14% as saturated fat, and 35 mg cholesterol/MJ) for 6 wk before being assigned to a National Cholesterol Education Program (NCEP) Step 2 high-fish diet (n = 11, 26% of energy as fat, 4.5% as saturated fat, and 15 mg cholesterol/MJ) or a NCEP Step 2 low-fish diet (n = 11, 26% of energy as fat, 4.0% as saturated fat, and 11 mg cholesterol/MJ) for 24 wk. All food and drink were provided to study participants. Consumption of the high-fish NCEP Step 2 diet was associated with a significant reduction in medium and small VLDL, compared with the AAD diet, whereas the low-fish diet did not affect VLDL subfractions. Both diets significantly reduced LDL cholesterol concentrations, without modifying LDL subfractions. Both diets also lowered HDL cholesterol concentrations. However, the high-fish diet significantly lowered only the HDL fraction containing both apolipoprotein (apo) AI and AII (LpAI:AII) and did not change HDL subfractions assessed by NMR, whereas the low-fish diet significantly lowered the HDL fraction containing only apo AI (LpAI) and the large NMR HDL fractions, resulting in a significant reduction in HDL particle size. Neither diet affected VLDL and LDL particle size. Our data indicate that within the context of a diet restricted in fat and cholesterol, a higher fish content favorably affects VLDL and HDL subspecies.
authors.affiliation: Lipid Metabolism Laboratory, Jean Mayer U.S. Department of Agriculture Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA.
authors.forename: Zhengling
authors.initials: Z
authors.lastname: Li
authors.forename: Stefania
authors.initials: S
authors.lastname: Lamon-Fava
authors.forename: James
authors.initials: J
authors.lastname: Otvos
authors.forename: Alice H
authors.initials: AH
authors.lastname: Lichtenstein
authors.forename: Wanda
authors.initials: W
authors.lastname: Velez-Carrasco
authors.forename: Judith R
authors.initials: JR
authors.lastname: McNamara
authors.forename: Jose M
authors.initials: JM
authors.lastname: Ordovas
authors.forename: Ernst J
authors.initials: EJ
authors.lastname: Schaefer
mesh_terms: D000328:Adult; D000818:Animals; D002784:Cholesterol / Q000097:blood; D004032:Diet; D004041:Dietary Fats / Q000008:administration & dosage / Q000032:analysis / Q000494:pharmacology*; D005260:Female; D005399:Fishes; D006801:Humans; D008074:Lipoproteins / Q000097:blood*; D008297:Male; D010316:Particle Size
chemical_list: D004041:Dietary Fats; D008074:Lipoproteins; D002784:Cholesterol