Evidence map›Paper›PMID 33859314›Full record

ArticleScientific reports2021

Extra virgin olive oil improved body weight and insulin sensitivity in high fat diet-induced obese LDLr-/-.Leiden mice without attenuation of steatohepatitis.

Leticia Álvarez-Amor, Amparo Luque Sierra, Antonio Cárdenas, Lucía López-Bermudo, Javier López-Beas, Eloísa Andújar, Mónica Pérez-Alegre, Rocío Gallego-Durán, Lourdes M Varela, Alejandro Martin-Montalvo and 7 more

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
3.0field-weighted citation impact, top 8% 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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Synergistic Beneficial Effects of Flaxseed (Food science & nutrition · 2025
    Review
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  12. Peroxisomal Proliferator-Activated ReceptorFrontiers in pharmacology · 2022
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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 6 institutions in 2 countries.

Leticia Álvarez-AmorAndalusian Center of Molecular Biology and Regenerative Medicine-CABIMER, University Pablo Olavide-University of Seville-CSIC, Seville, Spain.
Amparo Luque SierraAndalusian Center of Molecular Biology and Regenerative Medicine-CABIMER, University Pablo Olavide-University of Seville-CSIC, Seville, Spain.
Antonio CárdenasAndalusian Center of Molecular Biology and Regenerative Medicine-CABIMER, University Pablo Olavide-University of Seville-CSIC, Seville, Spain.
Lucía López-BermudoAndalusian Center of Molecular Biology and Regenerative Medicine-CABIMER, University Pablo Olavide-University of Seville-CSIC, Seville, Spain.
Javier López-BeasAndalusian Center of Molecular Biology and Regenerative Medicine-CABIMER, University Pablo Olavide-University of Seville-CSIC, Seville, Spain.
Eloísa AndújarAndalusian Center of Molecular Biology and Regenerative Medicine-CABIMER, University Pablo Olavide-University of Seville-CSIC, Seville, Spain.
Mónica Pérez-AlegreAndalusian Center of Molecular Biology and Regenerative Medicine-CABIMER, University Pablo Olavide-University of Seville-CSIC, Seville, Spain.
Rocío Gallego-DuránHospital Universitario Virgen del Rocío de Sevilla, Instituto de Biomedicina de Sevilla, Universidad de Sevilla, Sevilla, Spain.
Lourdes M VarelaAndalusian Center of Molecular Biology and Regenerative Medicine-CABIMER, University Pablo Olavide-University of Seville-CSIC, Seville, Spain.
Alejandro Martin-MontalvoAndalusian Center of Molecular Biology and Regenerative Medicine-CABIMER, University Pablo Olavide-University of Seville-CSIC, Seville, Spain.
Genoveva BernáAndalusian Center of Molecular Biology and Regenerative Medicine-CABIMER, University Pablo Olavide-University of Seville-CSIC, Seville, Spain.
Anabel RojasAndalusian Center of Molecular Biology and Regenerative Medicine-CABIMER, University Pablo Olavide-University of Seville-CSIC, Seville, Spain.
Mª José Robles-FríasCompared Pathology Unit, Hospital Universitario Virgen del Rocío-Intituto de Biomedicina de Sevilla Biobank Node, Andalucia Health Public System Biobank, Sevilla, Spain.
Abdelkrim HmadchaBiomedical Research Network On Diabetes and Related Metabolic Diseases-CIBERDEM, Instituto de Salud Carlos III, Madrid, Spain.
Manuel Romero-GómezHospital Universitario Virgen del Rocío de Sevilla, Instituto de Biomedicina de Sevilla, Universidad de Sevilla, Sevilla, Spain.
Robert KleemannDepartment of Metabolic Health Research, Netherlands Organisation for Applied Scientific Research-TNO, 2333 CK, Leiden, The Netherlands. robert.kleemann@tno.nl.
Franz MartínAndalusian Center of Molecular Biology and Regenerative Medicine-CABIMER, University Pablo Olavide-University of Seville-CSIC, Seville, Spain. fmarber@upo.es.
Universidad de Sevilla · ESInstituto de Biomedicina de Sevilla · ESCentro Andaluz de Biología Molecular y Medicina Regenerativa · ESCentro de Investigación Biomédica en Red Diabetes y Enfermedades Metabólicas Asociadas · ESInstituto de Salud Carlos III · ESNetherlands Organisation for Applied Scientific Research · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Dietary fatty acids play a role in the pathogenesis of obesity-associated non-alcoholic fatty liver disease (NAFLD), which is associated with insulin resistance (IR). Fatty acid composition is critical for IR and subsequent NAFLD development. Extra-virgin olive oil (EVOO) is the main source of monounsaturated fatty acids (MUFA) in Mediterranean diets. This study examined whether EVOO-containing high fat diets may prevent diet-induced NAFLD using Ldlr-/-. Leiden mice. In female Ldlr-/-.Leiden mice, the effects of the following high fat diets (HFDs) were examined: a lard-based HFD (HFD-L); an EVOO-based HFD (HFD-EVOO); a phenolic compounds-rich EVOO HFD (HFD-OL). We studied changes in body weight (BW), lipid profile, transaminases, glucose homeostasis, liver pathology and transcriptome. Both EVOO diets reduced body weight (BW) and improved insulin sensitivity. The EVOOs did not improve transaminase values and increased LDL-cholesterol and liver collagen content. EVOOs and HFD-L groups had comparable liver steatosis. The profibrotic effects were substantiated by an up-regulation of gene transcripts related to glutathione metabolism, chemokine signaling and NF-kappa-B activation and down-regulation of genes relevant for fatty acid metabolism. Collectivelly, EVOO intake improved weight gain and insulin sensitivity but not liver inflammation and fibrosis, which was supported by changes in hepatic genes expression.

Indexed as

Insulin ResistanceAnimalsBody WeightDiet, High-FatDiet, MediterraneanFemaleLipid MetabolismLiverMiceMice, KnockoutMice, ObeseNon-alcoholic Fatty Liver DiseaseObesityOlive OilReceptors, LDLOlive OilReceptors, LDL

Identifiers

PMID33859314
PMCPMC8050103
OpenAlexW3154345975

What OpenQuestion holds

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Registered trials

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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.