Using metabolic profiling and gene expression analyses to explore molecular effects of replacing saturated fat with polyunsaturated fat—a randomized controlled dietary intervention study

Replacing dietary saturated fatty acids (SFAs) with polyunsaturated fatty acids (PUFA) reduces the plasma low-density lipoprotein (LDL) cholesterol and subsequently the risk of cardiovascular disease. However, beyond changes in LDL cholesterol, we lack a complete understanding of the physiologic alt...

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Published inThe American journal of clinical nutrition Vol. 109; no. 5; pp. 1239 - 1250
Main Authors Ulven, Stine M, Christensen, Jacob J, Nygård, Ottar, Svardal, Asbjørn, Leder, Lena, Ottestad, Inger, Lysne, Vegard, Laupsa-Borge, Johnny, Ueland, Per Magne, Midttun, Øivind, Meyer, Klaus, McCann, Adrian, Andersen, Lene F, Holven, Kirsten B
Format Journal Article
LanguageEnglish
Published United States Elsevier Inc 01.05.2019
American Society for Clinical Nutrition, Inc
HighWire Press
Oxford University Press
Subjects
NMR
IDL
TBP
MS
ROC
CVD
RCT
E
L
M
S
CBS
FDR
SM
GC
NMR
PC
XL
RIN
LC
XS
Online AccessGet full text
ISSN0002-9165
1938-3207
1938-3207
DOI10.1093/ajcn/nqy356

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Abstract Replacing dietary saturated fatty acids (SFAs) with polyunsaturated fatty acids (PUFA) reduces the plasma low-density lipoprotein (LDL) cholesterol and subsequently the risk of cardiovascular disease. However, beyond changes in LDL cholesterol, we lack a complete understanding of the physiologic alterations that occur when improving dietary fat quality. The aim of this study was to gain knowledge of metabolic alterations paralleling improvements in the fat quality of the diet. We recently conducted an 8-wk, double-blind, randomized controlled trial replacing SFAs with PUFAs in healthy subjects with moderate hypercholesterolemia (n = 99). In the present substudy, we performed comprehensive metabolic profiling with multiple platforms (both nuclear magnetic resonance- and mass spectrometry-based technology) (n = 99), and analyzed peripheral blood mononuclear cell gene expression (n = 95) by quantitative real-time polymerase chain reaction. A large number of lipoprotein subclasses, myristoylcarnitine and palmitoylcarnitine, and kynurenine were reduced when SFAs were replaced with PUFAs. In contrast, bile acids, proprotein convertase subtilisin/kexin type 9, acetate, and acetoacetate were increased by the intervention. Some amino acids were also altered by the intervention. The mRNA levels of LXRA and LDLR were increased, in addition to several liver X receptor α target genes and genes involved in inflammation, whereas the mRNA levels of UCP2 and PPARD were decreased in peripheral blood mononuclear cells after replacing SFAs with PUFAs. Partial least squares-discriminant analysis showed that the 30 most important variables that contributed to class separation spanned all classes of biomarkers, and was in accordance with the univariate analysis. Applying metabolomics in randomized controlled dietary intervention trials has the potential to extend our knowledge of the biological and molecular effects of dietary fat quality. This study was registered at clinicaltrials.gov as NCT 01679496.
AbstractList Replacing dietary saturated fatty acids (SFAs) with polyunsaturated fatty acids (PUFA) reduces the plasma low-density lipoprotein (LDL) cholesterol and subsequently the risk of cardiovascular disease. However, beyond changes in LDL cholesterol, we lack a complete understanding of the physiologic alterations that occur when improving dietary fat quality.BACKGROUNDReplacing dietary saturated fatty acids (SFAs) with polyunsaturated fatty acids (PUFA) reduces the plasma low-density lipoprotein (LDL) cholesterol and subsequently the risk of cardiovascular disease. However, beyond changes in LDL cholesterol, we lack a complete understanding of the physiologic alterations that occur when improving dietary fat quality.The aim of this study was to gain knowledge of metabolic alterations paralleling improvements in the fat quality of the diet.OBJECTIVESThe aim of this study was to gain knowledge of metabolic alterations paralleling improvements in the fat quality of the diet.We recently conducted an 8-wk, double-blind, randomized controlled trial replacing SFAs with PUFAs in healthy subjects with moderate hypercholesterolemia (n = 99). In the present substudy, we performed comprehensive metabolic profiling with multiple platforms (both nuclear magnetic resonance- and mass spectrometry-based technology) (n = 99), and analyzed peripheral blood mononuclear cell gene expression (n = 95) by quantitative real-time polymerase chain reaction.METHODSWe recently conducted an 8-wk, double-blind, randomized controlled trial replacing SFAs with PUFAs in healthy subjects with moderate hypercholesterolemia (n = 99). In the present substudy, we performed comprehensive metabolic profiling with multiple platforms (both nuclear magnetic resonance- and mass spectrometry-based technology) (n = 99), and analyzed peripheral blood mononuclear cell gene expression (n = 95) by quantitative real-time polymerase chain reaction.A large number of lipoprotein subclasses, myristoylcarnitine and palmitoylcarnitine, and kynurenine were reduced when SFAs were replaced with PUFAs. In contrast, bile acids, proprotein convertase subtilisin/kexin type 9, acetate, and acetoacetate were increased by the intervention. Some amino acids were also altered by the intervention. The mRNA levels of LXRA and LDLR were increased, in addition to several liver X receptor α target genes and genes involved in inflammation, whereas the mRNA levels of UCP2 and PPARD were decreased in peripheral blood mononuclear cells after replacing SFAs with PUFAs. Partial least squares-discriminant analysis showed that the 30 most important variables that contributed to class separation spanned all classes of biomarkers, and was in accordance with the univariate analysis.RESULTSA large number of lipoprotein subclasses, myristoylcarnitine and palmitoylcarnitine, and kynurenine were reduced when SFAs were replaced with PUFAs. In contrast, bile acids, proprotein convertase subtilisin/kexin type 9, acetate, and acetoacetate were increased by the intervention. Some amino acids were also altered by the intervention. The mRNA levels of LXRA and LDLR were increased, in addition to several liver X receptor α target genes and genes involved in inflammation, whereas the mRNA levels of UCP2 and PPARD were decreased in peripheral blood mononuclear cells after replacing SFAs with PUFAs. Partial least squares-discriminant analysis showed that the 30 most important variables that contributed to class separation spanned all classes of biomarkers, and was in accordance with the univariate analysis.Applying metabolomics in randomized controlled dietary intervention trials has the potential to extend our knowledge of the biological and molecular effects of dietary fat quality. This study was registered at clinicaltrials.gov as NCT01679496.CONCLUSIONSApplying metabolomics in randomized controlled dietary intervention trials has the potential to extend our knowledge of the biological and molecular effects of dietary fat quality. This study was registered at clinicaltrials.gov as NCT01679496.
Replacing dietary saturated fatty acids (SFAs) with polyunsaturated fatty acids (PUFA) reduces the plasma low-density lipoprotein (LDL) cholesterol and subsequently the risk of cardiovascular disease. However, beyond changes in LDL cholesterol, we lack a complete understanding of the physiologic alterations that occur when improving dietary fat quality. The aim of this study was to gain knowledge of metabolic alterations paralleling improvements in the fat quality of the diet. We recently conducted an 8-wk, double-blind, randomized controlled trial replacing SFAs with PUFAs in healthy subjects with moderate hypercholesterolemia (n = 99). In the present substudy, we performed comprehensive metabolic profiling with multiple platforms (both nuclear magnetic resonance- and mass spectrometry-based technology) (n = 99), and analyzed peripheral blood mononuclear cell gene expression (n = 95) by quantitative real-time polymerase chain reaction. A large number of lipoprotein subclasses, myristoylcarnitine and palmitoylcarnitine, and kynurenine were reduced when SFAs were replaced with PUFAs. In contrast, bile acids, proprotein convertase subtilisin/kexin type 9, acetate, and acetoacetate were increased by the intervention. Some amino acids were also altered by the intervention. The mRNA levels of LXRA and LDLR were increased, in addition to several liver X receptor α target genes and genes involved in inflammation, whereas the mRNA levels of UCP2 and PPARD were decreased in peripheral blood mononuclear cells after replacing SFAs with PUFAs. Partial least squares-discriminant analysis showed that the 30 most important variables that contributed to class separation spanned all classes of biomarkers, and was in accordance with the univariate analysis. Applying metabolomics in randomized controlled dietary intervention trials has the potential to extend our knowledge of the biological and molecular effects of dietary fat quality. This study was registered at clinicaltrials.gov as NCT01679496.
Background Replacing dietary saturated fatty acids (SFAs) with polyunsaturated fatty acids (PUFA) reduces the plasma low-density lipoprotein (LDL) cholesterol and subsequently the risk of cardiovascular disease. However, beyond changes in LDL cholesterol, we lack a complete understanding of the physiologic alterations that occur when improving dietary fat quality. Objectives The aim of this study was to gain knowledge of metabolic alterations paralleling improvements in the fat quality of the diet. Methods We recently conducted an 8-wk, double-blind, randomized controlled trial replacing SFAs with PUFAs in healthy subjects with moderate hypercholesterolemia (n = 99). In the present substudy, we performed comprehensive metabolic profiling with multiple platforms (both nuclear magnetic resonance- and mass spectrometry-based technology) (n = 99), and analyzed peripheral blood mononuclear cell gene expression (n = 95) by quantitative real-time polymerase chain reaction. Results A large number of lipoprotein subclasses, myristoylcarnitine and palmitoylcarnitine, and kynurenine were reduced when SFAs were replaced with PUFAs. In contrast, bile acids, proprotein convertase subtilisin/kexin type 9, acetate, and acetoacetate were increased by the intervention. Some amino acids were also altered by the intervention. The mRNA levels of LXRA and LDLR were increased, in addition to several liver X receptor α target genes and genes involved in inflammation, whereas the mRNA levels of UCP2 and PPARD were decreased in peripheral blood mononuclear cells after replacing SFAs with PUFAs. Partial least squares-discriminant analysis showed that the 30 most important variables that contributed to class separation spanned all classes of biomarkers, and was in accordance with the univariate analysis. Conclusions Applying metabolomics in randomized controlled dietary intervention trials has the potential to extend our knowledge of the biological and molecular effects of dietary fat quality. This study was registered at clinicaltrials.gov as NCT 01679496.
Replacing dietary saturated fatty acids (SFAs) with polyunsaturated fatty acids (PUFA) reduces the plasma low-density lipoprotein (LDL) cholesterol and subsequently the risk of cardiovascular disease. However, beyond changes in LDL cholesterol, we lack a complete understanding of the physiologic alterations that occur when improving dietary fat quality. The aim of this study was to gain knowledge of metabolic alterations paralleling improvements in the fat quality of the diet. We recently conducted an 8-wk, double-blind, randomized controlled trial replacing SFAs with PUFAs in healthy subjects with moderate hypercholesterolemia (n = 99). In the present substudy, we performed comprehensive metabolic profiling with multiple platforms (both nuclear magnetic resonance- and mass spectrometry-based technology) (n = 99), and analyzed peripheral blood mononuclear cell gene expression (n = 95) by quantitative real-time polymerase chain reaction. A large number of lipoprotein subclasses, myristoylcarnitine and palmitoylcarnitine, and kynurenine were reduced when SFAs were replaced with PUFAs. In contrast, bile acids, proprotein convertase subtilisin/kexin type 9, acetate, and acetoacetate were increased by the intervention. Some amino acids were also altered by the intervention. The mRNA levels of LXRA and LDLR were increased, in addition to several liver X receptor α target genes and genes involved in inflammation, whereas the mRNA levels of UCP2 and PPARD were decreased in peripheral blood mononuclear cells after replacing SFAs with PUFAs. Partial least squares-discriminant analysis showed that the 30 most important variables that contributed to class separation spanned all classes of biomarkers, and was in accordance with the univariate analysis. Applying metabolomics in randomized controlled dietary intervention trials has the potential to extend our knowledge of the biological and molecular effects of dietary fat quality. This study was registered at clinicaltrials.gov as NCT 01679496.
Replacing dietary saturated fatty acids (SFAs) with polyunsaturated fatty acids (PUFA) reduces the plasma low-density lipoprotein (LDL) cholesterol and subsequently the risk of cardiovascular disease. However, beyond changes in LDL cholesterol, we lack a complete understanding of the physiologic alterations that occur when improving dietary fat quality. The aim of this study was to gain knowledge of metabolic alterations paralleling improvements in the fat quality of the diet. We recently conducted an 8-wk, double-blind, randomized controlled trial replacing SFAs with PUFAs in healthy subjects with moderate hypercholesterolemia (n = 99). In the present substudy, we performed comprehensive metabolic profiling with multiple platforms (both nuclear magnetic resonance- and mass spectrometry-based technology) (n = 99), and analyzed peripheral blood mononuclear cell gene expression (n = 95) by quantitative real-time polymerase chain reaction. A large number of lipoprotein subclasses, myristoylcarnitine and palmitoylcarnitine, and kynurenine were reduced when SFAs were replaced with PUFAs. In contrast, bile acids, proprotein convertase subtilisin/kexin type 9, acetate, and acetoacetate were increased by the intervention. Some amino acids were also altered by the intervention. The mRNA levels of LXRA and LDLR were increased, in addition to several liver X receptor α target genes and genes involved in inflammation, whereas the mRNA levels of UCP2 and PPARD were decreased in peripheral blood mononuclear cells after replacing SFAs with PUFAs. Partial least squares-discriminant analysis showed that the 30 most important variables that contributed to class separation spanned all classes of biomarkers, and was in accordance with the univariate analysis. Applying metabolomics in randomized controlled dietary intervention trials has the potential to extend our knowledge of the biological and molecular effects of dietary fat quality. This study was registered at clinicaltrials.gov as NCT 01679496.
Author Holven, Kirsten B
Ulven, Stine M
Laupsa-Borge, Johnny
Midttun, Øivind
Svardal, Asbjørn
Leder, Lena
Andersen, Lene F
Lysne, Vegard
Christensen, Jacob J
Nygård, Ottar
McCann, Adrian
Ottestad, Inger
Ueland, Per Magne
Meyer, Klaus
AuthorAffiliation 2 Department of Clinical Science, University of Bergen, Norway
5 Norwegian National Advisory Unit on Familial Hypercholesterolemia, Department of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital, Rikshospitalet, PO Box 4950 Nydalen, Oslo, Norway
3 Mills DA, Oslo, Norway
4 Bevital A/S Bergen, Norway
1 Department of Nutrition, Institute for Basic Medical Sciences, University of Oslo, Blindern, Oslo, Norway
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BackLink https://www.ncbi.nlm.nih.gov/pubmed/31051508$$D View this record in MEDLINE/PubMed
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ContentType Journal Article
Copyright 2019 American Society for Nutrition.
Copyright © American Society for Nutrition 2019.
Copyright American Society for Clinical Nutrition, Inc. May 2019
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ISSN 0002-9165
1938-3207
IngestDate Thu Aug 21 14:34:59 EDT 2025
Sat Apr 29 05:43:02 EDT 2023
Mon Jul 21 11:00:11 EDT 2025
Sun Sep 28 05:57:46 EDT 2025
Fri Jul 25 22:59:24 EDT 2025
Wed Feb 19 02:25:37 EST 2025
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Thu Apr 24 23:03:12 EDT 2025
Fri Feb 23 02:36:52 EST 2024
IsDoiOpenAccess true
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IsScholarly true
Issue 5
Keywords C-diet group
PCSK9
cardiovascular risk factors
IDL
LXRA
TNFSF
GUSB
hs-CRP
TBP
lipoprotein subclasses
MS
ROC
PBMC
CVD
nutrition
CD8A
IRF4
Ex-diet group
acylcarnitines
SREBF
TLR4
gene expression
ABCG1
PPARD
TMAO
RCT
E
GATA3
IL2RG
L
M
S
IRAK1
CBS
FDR
TBX21
CXCR2
UCP2
SM
GC
LDLR
tryptophan
fatty acids
NR1H3
PLS-DA
metabolic profiling
NMR
PC
XL
FASN
RIN
LC
XS
Language English
License http://creativecommons.org/licenses/by-nc/4.0
Copyright © American Society for Nutrition 2019.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com
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0000-0002-2145-7777
0000-0003-0236-1558
0000-0002-4885-1010
0000-0001-8030-102X
0000-0002-8674-9703
OpenAccessLink http://hdl.handle.net/10852/76142
PMID 31051508
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PublicationTitle The American journal of clinical nutrition
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HighWire Press
Oxford University Press
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SSID ssj0012486
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Snippet Replacing dietary saturated fatty acids (SFAs) with polyunsaturated fatty acids (PUFA) reduces the plasma low-density lipoprotein (LDL) cholesterol and...
Background Replacing dietary saturated fatty acids (SFAs) with polyunsaturated fatty acids (PUFA) reduces the plasma low-density lipoprotein (LDL) cholesterol...
SourceID pubmedcentral
cristin
proquest
pubmed
crossref
elsevier
SourceType Open Access Repository
Aggregation Database
Index Database
Enrichment Source
Publisher
StartPage 1239
SubjectTerms acetates
Acetic acid
Acetic Acid - blood
Acetoacetates - blood
acetoacetic acid
acylcarnitines
Amino acids
Amino Acids - blood
Bile acids
Bile Acids and Salts - blood
Biological effects
Biomarkers
Blood
Cardiovascular diseases
cardiovascular risk factors
Cholesterol
Cholesterol, LDL - blood
Diet
dietary fat
Dietary Fats - administration & dosage
Dietary Fats - adverse effects
Dietary Fats - blood
Dietary Fats - pharmacology
Discriminant analysis
Double-Blind Method
Fatty acids
Fatty Acids - administration & dosage
Fatty Acids - blood
Fatty Acids - pharmacology
Fatty Acids, Unsaturated - administration & dosage
Fatty Acids, Unsaturated - blood
Fatty Acids, Unsaturated - pharmacology
Fatty Acids, Unsaturated - therapeutic use
Feeding Behavior
Female
Gene expression
Gene Expression Profiling - methods
Genes
Health risks
Humans
Hypercholesterolemia
Hypercholesterolemia - diet therapy
Hypercholesterolemia - genetics
Hypercholesterolemia - metabolism
inflammation
Kexin
kynurenine
Leukocytes (mononuclear)
Lipid Metabolism - drug effects
lipoprotein subclasses
Lipoproteins - blood
liver
Liver X receptors
Low density lipoprotein
low density lipoprotein cholesterol
Low density lipoprotein receptors
magnetism
Male
Mass spectrometry
Mass spectroscopy
messenger RNA
metabolic profiling
Metabolism
Metabolome - drug effects
Metabolomics
Metabolomics - methods
Middle Aged
Mitochondrial uncoupling protein 2
mononuclear leukocytes
NMR
Nuclear magnetic resonance
nuclear magnetic resonance spectroscopy
nutrition
nutritional intervention
Oils & fats
Original Research Communications
Peptide Hydrolases - genetics
Peptide Hydrolases - metabolism
Peripheral blood mononuclear cells
Peroxisome proliferator-activated receptors
Polymerase chain reaction
Polyunsaturated fatty acids
Proprotein convertases
quantitative polymerase chain reaction
Randomization
randomized clinical trials
saturated fats
saturated fatty acids
Subtilisin
Technology assessment
tryptophan
Title Using metabolic profiling and gene expression analyses to explore molecular effects of replacing saturated fat with polyunsaturated fat—a randomized controlled dietary intervention study
URI https://dx.doi.org/10.1093/ajcn/nqy356
https://www.ncbi.nlm.nih.gov/pubmed/31051508
https://www.proquest.com/docview/2225231079
https://www.proquest.com/docview/2229241881
https://www.proquest.com/docview/2352445951
http://hdl.handle.net/10852/76142
https://pubmed.ncbi.nlm.nih.gov/PMC6499508
Volume 109
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