Corn oil intake favorably impacts lipoprotein cholesterol, apolipoprotein and lipoprotein particle levels compared with extra-virgin olive oil.
Corn oil (CO) and extra-virgin olive oil (EVOO) are rich sources of unsaturated fatty acids (UFA), but UFA profiles differ among oils, which may affect lipoprotein levels.



The objective of this study was to assess the effects of CO versus EVOO intake on fasting lipoprotein and subfraction cholesterol levels, apolipoprotein (apo) A1, apo B, and low-density lipoprotein particle concentrations in men and women.



As part of a weight maintenance diet, men and women were provided with food items prepared with 54 g per day of CO or EVOO (21-day treatment, 21-day washout) in a randomized, double-blind, controlled-feeding, crossover trial. Fasting lipoprotein cholesterol and related variables were determined with density gradient ultracentrifugation.



Among the 54 completers, CO reduced total cholesterol, low-density lipoprotein cholesterol (LDL-C), very low-density lipoprotein cholesterol (VLDL-C), non-high-density lipoprotein cholesterol (non-HDL-C), apo B and LDL particle concentration to a greater extent compared with EVOO intake. Changes in LDL-C and VLDL-C contributed to the larger reduction in non-HDL-C with CO compared with EVOO intake (-0.39 mmol/l vs -0.04 mmol/l; P<0.001). The larger reduction in LDL-C by CO intake was attributable to changes (P<0.05) caused by CO vs EVOO in large LDL1+2-C (-0.22 mmol/l) and intermediate-density lipoprotein cholesterol (-0.12 mmol/l). HDL-C responses did not differ between treatments, but apo A1 increased more with EVOO compared with CO intake (4.6  versus 0.7 mg/dl, respectively, P=0.016).



CO intake reduced atherogenic lipoprotein cholesterol and particle concentrations to a larger extent than did EVOO, which may have implications for cardiovascular disease risk.
Midwest Biomedical - Center for Metabolic and Cardiovascular Research, Glen Ellyn, IL, USA.|Biofortis Innovation Services/Merieux NutriSciences, Addison, IL, USA.
K C
KC
Maki
Biofortis Innovation Services/Merieux NutriSciences, Addison, IL, USA.
A L
AL
Lawless
Biofortis Innovation Services/Merieux NutriSciences, Addison, IL, USA.
K M
KM
Kelley
Biofortis Innovation Services/Merieux NutriSciences, Addison, IL, USA.
V N
VN
Kaden
Geiger and Associates, LLC, Fort Bridger, WY, USA.
C J
CJ
Geiger
Midwest Biomedical - Center for Metabolic and Cardiovascular Research, Glen Ellyn, IL, USA.
O M
OM
Palacios
Midwest Biomedical - Center for Metabolic and Cardiovascular Research, Glen Ellyn, IL, USA.|Biofortis Innovation Services/Merieux NutriSciences, Addison, IL, USA.
M R
MR
Dicklin
D016632:Apolipoprotein A-I / Q000097:blood; D001053:Apolipoproteins / Q000097:blood*; D001055:Apolipoproteins B / Q000097:blood; D002784:Cholesterol / Q000097:blood*; D003314:Corn Oil / Q000008:administration & dosage*; D018592:Cross-Over Studies; D004311:Double-Blind Method; D004435:Eating / Q000502:physiology*; D005260:Female; D006801:Humans; D008074:Lipoproteins / Q000097:blood*; D008077:Lipoproteins, LDL / Q000097:blood*; D008297:Male; D008875:Middle Aged; D000069463:Olive Oil / Q000008:administration & dosage*
C505693:APOA1 protein, human; D016632:Apolipoprotein A-I; D001053:Apolipoproteins; D001055:Apolipoproteins B; D008074:Lipoproteins; D008077:Lipoproteins, LDL; D000069463:Olive Oil; C030104:lipoprotein cholesterol; D003314:Corn Oil; D002784:Cholesterol
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