Evidence map›Paper›PMID 32930325›Full record

SynthesisThe American journal of clinical nutrition2020

Carbohydrate and fat intake associated with risk of metabolic diseases through epigenetics of CPT1A.

Chao-Qiang Lai, Laurence D Parnell, Caren E Smith, Tao Guo, Sergi Sayols-Baixeras, Stella Aslibekyan, Hemant K Tiwari, Marguerite R Irvin, Carl Bender, David Fei and 7 more

2 registry-linked trialsOpen access · greenAbstract readMeta-Analysis
In one paragraph

Synthesis in The American journal of clinical nutrition, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 46 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed, 3 pooled it
3.9field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT00005121 completednot on this map

Framingham Heart Study

TypeobservationalSponsorNational Heart, Lung, and Blood Institute (NHLBI)Ran1948 to 2008ConditionsCardiovascular Diseases, Heart Diseases, Coronary Disease, Cerebrovascular Accident
NCT01023750 completednot on this map

Pretreatment Genotyping at APOA5 and GCKR Loci and Response to Fenofibrate Therapy

TypeobservationalSponsorUniversity of Alabama at BirminghamRan2010 to 2012Enrolled39ConditionsHypertriglyceridemia, Insulin ResistanceArmsFenofibrate
3 · Its place in the literature

Who cites it

46 citing papers in PubMed, 3 syntheses or guidelines pooled it, 82 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

17 authors at 8 institutions in 2 countries.

Chao-Qiang LaiUSDA Agricultural Research Service, Nutrition and Genomics Laboratory, JM-USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA.
Laurence D ParnellUSDA Agricultural Research Service, Nutrition and Genomics Laboratory, JM-USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA.
Caren E SmithNutrition and Genomics Laboratory, JM-USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA.
Tao GuoNutrition and Genomics Laboratory, JM-USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA.
Sergi Sayols-BaixerasCardiovascular Epidemiology and Genetics Research Group, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Catalonia, Spain.
Stella AslibekyanDepartment of Epidemiology, School of Public Health, University of Alabama, Birmingham, AL, USA.
Hemant K TiwariDepartment of Epidemiology, School of Public Health, University of Alabama, Birmingham, AL, USA.
Marguerite R IrvinDepartment of Epidemiology, School of Public Health, University of Alabama, Birmingham, AL, USA.
Carl BenderNutrition and Genomics Laboratory, JM-USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA.
David FeiNutrition and Genomics Laboratory, JM-USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA.
Bertha HidalgoDepartment of Epidemiology, School of Public Health, University of Alabama, Birmingham, AL, USA.
Paul N HopkinsDepartment of Cardiovascular Genetics, University of Utah, Salt Lake City, UT, USA.
Devin M AbsherHudson Alpha Institute for Biotechnology, Huntsville, AL, USA.
Michael A ProvinceDepartment of Genetics, Washington University School of Medicine, St Louis, MO, USA.
Roberto ElosuaCardiovascular Epidemiology and Genetics Research Group, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Catalonia, Spain.
Donna K ArnettCollege of Public Health, University of Kentucky, Lexington, KY, USA.
Jose M OrdovasNutrition and Genomics Laboratory, JM-USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA.
Tufts University · USUniversity of Alabama at Birmingham · USCentro de Investigación en Red en Enfermedades Cardiovasculares · ESHudsonAlpha Institute for Biotechnology · USMadrid Institute for Advanced Studies · ESUniversity of Kentucky · USUniversity of Utah · USWashington University in St. Louis · US

Funding

Washington University Nutrition Obesity Research CenterP30DK056341 · NIDDK · WASHINGTON UNIVERSITY · PI Dominic N Reeds · 1999 to 2026
$30.2M
University of Alabama at Birmingham's Diabetes Research CenterP30DK079626 · NIDDK · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI Kirk Michael Habegger · 2013 to 2026
$19.5M
Genetic and Environmental Determinants of TriglyceridesU01HL072524 · NHLBI · UNIVERSITY OF MINNESOTA TWIN CITIES · PI ARNETT, DONNA K · 2002 to 2008
$11.9M
Epigenetic Determinants of Lipid Response to Dietary Fat and FenofibrateR01HL104135 · NHLBI · UNIVERSITY OF KENTUCKY · PI ARNETT, DONNA K · 2010 to 2015
$5.5M
NHLBI NIH HHS R01 HL104135NHLBI NIH HHS U01 HL072524NIDDK NIH HHS P30 DK056341NIDDK NIH HHS P30 DK079626
6 · The paper itself

Abstract

backgroundEpigenome-wide association studies identified the cg00574958 DNA methylation site at the carnitine palmitoyltransferase-1A (CPT1A) gene to be associated with reduced risk of metabolic diseases (hypertriglyceridemia, obesity, type 2 diabetes, hypertension, metabolic syndrome), but the mechanism underlying these associations is unknown.

objectivesWe aimed to elucidate whether carbohydrate and fat intakes modulate cg00574958 methylation and the risk of metabolic diseases.

methodsWe examined associations between carbohydrate (CHO) and fat (FAT) intake, as percentages of total diet energy, and the CHO/FAT ratio with CPT1A-cg00574958, and the risk of metabolic diseases in 3 populations (Genetics of Lipid Lowering Drugs and Diet Network, n = 978; Framingham Heart Study, n = 2331; and REgistre GIroní del COR study, n = 645) while adjusting for confounding factors. To understand possible causal effects of dietary intake on the risk of metabolic diseases, we performed meta-analysis, CPT1A transcription analysis, and mediation analysis with CHO and FAT intakes as exposures and cg00574958 methylation as the mediator.

resultsWe confirmed strong associations of cg00574958 methylation with metabolic phenotypes (BMI, triglyceride, glucose) and diseases in all 3 populations. Our results showed that CHO intake and CHO/FAT ratio were positively associated with cg00574958 methylation, whereas FAT intake was negatively correlated with cg00574958 methylation. Meta-analysis further confirmed this strong correlation, with β = 58.4 ± 7.27, P = 8.98 x 10-16 for CHO intake; β = -36.4 ± 5.95, P = 9.96 x 10-10 for FAT intake; and β = 3.30 ± 0.49, P = 1.48 x 10-11 for the CHO/FAT ratio. Furthermore, CPT1A mRNA expression was negatively associated with CHO intake, and positively associated with FAT intake, and metabolic phenotypes. Mediation analysis supports the hypothesis that CHO intake induces CPT1A methylation, hence reducing the risk of metabolic diseases, whereas FAT intake inhibits CPT1A methylation, thereby increasing the risk of metabolic diseases.

conclusionsOur results suggest that the proportion of total energy supplied by CHO and FAT can have a causal effect on the risk of metabolic diseases via the epigenetic status of CPT1A.Study registration at https://www.clinicaltrials.gov/: the Genetics of Lipid Lowering Drugs and Diet Network (GOLDN)-NCT01023750; and the Framingham Heart Study (FHS)-NCT00005121.

Indexed as

Epigenesis, GeneticAdultAgedCarnitine O-PalmitoyltransferaseDietary CarbohydratesDietary FatsEpigenomeFemaleGene Expression Regulation, EnzymologicGenetic VariationGenome-Wide Association StudyHumansMaleMiddle AgedCarnitine O-PalmitoyltransferaseCPT1A protein, humanDietary CarbohydratesDietary Fatscarbohydrate and fat intakeCPT1Adiabetesdyslipidemiaepigeneticshypertensionmetabolic syndromeobesity

Identifiers

PMID32930325
PMCPMC7657341
OpenAlexW3087106738

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.