Evidence map›Paper›PMID 24813368›Full record

ArticleInternational journal of obesity (2005)2015

Opposite alterations in FGF21 and FGF19 levels and disturbed expression of the receptor machinery for endocrine FGFs in obese patients.

J M Gallego-Escuredo, J Gómez-Ambrosi, V Catalan, P Domingo, M Giralt, G Frühbeck, F Villarroya

Abstract readMulticenter Study
PubMed Publisher
In one paragraph

Article in International journal of obesity (2005), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 110 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
110citing papers in PubMed, 1 pooled it
7.4field-weighted citation impact, top 2% 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

110 citing papers in PubMed, 1 synthesis or guideline pooled it, 204 citations in OpenAlex.

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  16. Glyoxalase 1 Inducer,Antioxidants (Basel, Switzerland) · 2025
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50 more citing papers are in PubMed but not listed here.

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

7 authors at 4 institutions in 1 country.

J M Gallego-Escuredo1] Department of Biochemistry and Molecular Biology and Institute of Biomedicina, University of Barcelona, Barcelona, Spain [2] CIBER Fisiopatología de la Obesidad y Nutrición, Nutrición, Spain.
J Gómez-Ambrosi1] CIBER Fisiopatología de la Obesidad y Nutrición, Nutrición, Spain [2] Clínica Universidad de Navarra, Pamplona, Spain.
V Catalan1] CIBER Fisiopatología de la Obesidad y Nutrición, Nutrición, Spain [2] Clínica Universidad de Navarra, Pamplona, Spain.
P DomingoHospital de la Santa Creu i Sant Pau, Barcelona, Spain.
M Giralt1] Department of Biochemistry and Molecular Biology and Institute of Biomedicina, University of Barcelona, Barcelona, Spain [2] CIBER Fisiopatología de la Obesidad y Nutrición, Nutrición, Spain.
G Frühbeck1] CIBER Fisiopatología de la Obesidad y Nutrición, Nutrición, Spain [2] Clínica Universidad de Navarra, Pamplona, Spain.
F Villarroya1] Department of Biochemistry and Molecular Biology and Institute of Biomedicina, University of Barcelona, Barcelona, Spain [2] CIBER Fisiopatología de la Obesidad y Nutrición, Nutrición, Spain.
Centro de Investigación Biomédica en Red · ESSociedad Española de Endocrinología y Nutrición · ESUniversitat de Barcelona · ESHospital de Sant Pau · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveFibroblast growth factor (FGF)-21, and possibly FGF19, protect against type 2 diabetes mellitus (T2DM) and obesity in rodents. We investigated the circulating levels of FGF21 and FGF19 in obese patients with varying degrees of abnormal glucose homeostasis, and we determined gene expression for FGF receptors (FGFR1-4) and the co-receptor β-Klotho, in liver and adipose tissues. SUBJECTS AND

methodsWe analyzed 35 lean healthy (71% men) and 61 obese patients (49% men, median body mass index (BMI): 40.5 kg m(-2), interquartile range: 34.7-46.2). Among obese patients, 36 were normoglycemic, 15 showed impaired glucose tolerance and 10 had T2DM. Biopsies from liver and visceral and subcutaneous fat from a subset of obese patients and controls were analyzed. FGF19 and FGF21 levels were measured using enzyme-linked immunosorbent assay, and tissue mRNA and protein levels by reverse transcription-polymerase chain reaction and immunoblotting.

resultsFGF21 serum levels were significantly increased in obese patients compared with controls (P<0.001), whereas FGF19 levels were decreased (P < 0.001). FGF21 levels were positively correlated with homeostasis model assessment of insulin resistance (P = 0.0002, r = 0.37) and insulin (P = 0.001, r = 0.32), whereas FGF19 levels were negatively correlated (P = 0.007, r = -0.27; P=0.003, r = -0.28; respectively). After adjusting for BMI, the correlations of FGF21 and FGF19 levels with indicators of abnormal glucose homeostasis were not significant. In obese patients, the hepatic expression of FGF21 was increased. (P = 0.04). β-Klotho transcript levels in visceral fat (P = 0.002) and β-Klotho protein levels in subcutaneous (P = 0.03) and visceral fat (P = 0.04) were significantly reduced in obese patients, whereas hepatic levels for β-Klotho (P = 0.03), FGFR1 (P = 0.04) and FGFR3 (P = 0.001) transcripts were significantly increased.

conclusionsObesity is characterized by reciprocal alterations in FGF19 (decrease) and FGF21 (increase) levels. Although worsened in diabetic obese patients, obesity itself appears as the predominant determinant of the abnormalities in FGF21 and FGF19 levels. Opposite changes in β-Klotho expression in fat and liver indicate potential tissue-specific alterations in the responsiveness to endocrine FGFs in obesity.

Indexed as

Adipose TissueAdultBody Mass IndexFemaleFibroblast Growth FactorsGlucoseGlucose Tolerance TestHumansInsulin ResistanceKlotho ProteinsLiverMaleMembrane ProteinsObesityReceptors, Fibroblast Growth FactorSignal TransductionFGF19 protein, humanfibroblast growth factor 21Fibroblast Growth FactorsGlucoseKLB protein, humanKlotho ProteinsMembrane ProteinsReceptors, Fibroblast Growth Factor

Identifiers

PMID24813368
OpenAlexW2017843740

What Socratic holds

Textmetadata
Read underepoch 390

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 Socratic graph.