Evidence map›Paper›PMID 40820083›Full record

ArticleScientific reports2025

Characterization of growth differentiation factor 15 (GDF15) as a neurotropic adipokine permeable to the brain.

Andreas Schmid, Emily Wilfurth, Alexandra Höpfinger, Manuel Behrendt, Edita Islami, Thomas Karrasch, Martin Berghoff, Andreas Schäffler

Abstract read
In one paragraph

Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
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

4 citing papers in PubMed.

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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

8 authors.

Andreas SchmidDepartment of Internal Medicine III, Giessen University Hospital, Giessen, Germany. andreas.schmid@innere.med.uni-giessen.de.
Emily WilfurthDepartment of Internal Medicine III, Giessen University Hospital, Giessen, Germany.
Alexandra HöpfingerDepartment of Internal Medicine III, Giessen University Hospital, Giessen, Germany.
Manuel BehrendtDepartment of Internal Medicine III, Giessen University Hospital, Giessen, Germany.
Edita IslamiDepartment of Internal Medicine III, Giessen University Hospital, Giessen, Germany.
Thomas KarraschDepartment of Internal Medicine III, Giessen University Hospital, Giessen, Germany.
Martin BerghoffDepartment of Neurology, Giessen University Hospital, Klinikstraße 33, 35392, Gießen Giessen, Germany.
Andreas SchäfflerDepartment of Internal Medicine III, Giessen University Hospital, Giessen, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

GDF15 (growth/differentiation factor-15) belongs to the superfamily of transforming growth factor-beta. Little is known about adipocytic regulation of GDF15, its concentrations in serum and cerebrospinal fluid (CSF), its permeability to the brain, and its correlation with neurological diseases. This knowledge is important for a potential and clinical role of GDF15 as a mediator of the fat-brain axis in metabolic and neurological diseases. GDF15 mRNA expression in 3T3-L1 adipocytes was measured by qPCR and GDF15 protein levels in supernatants, serum and CSF were determined by ELISA. In vitro, GDF15 expression is nearly absent in pre-adipocytes and strongly upregulated during adipocyte differentiation. Insulin upregulates GDF15 secretion in adipocytes under normo- and hyperglycemic conditions. In vivo, we quantified GDF15 protein concentrations in paired samples of serum and CSF in a large and well-characterized clinical cohort of n = 390 patients undergoing neurological investigation and spinal puncture. This broad data set could serve as a basis for the development of GDF15 reference values in serum and CSF. GDF15 is highly permeable to the brain according to a specific CSF / serum ratio of 306 × 10

Indexed as

AdipokinesBrainGrowth Differentiation Factor 153T3-L1 CellsAdipocytesAdultAgedAnimalsBlood-Brain BarrierCell DifferentiationDiabetes Mellitus, Type 2FemaleHumansMaleMiceMiddle AgedAdipokinesGDF15 protein, humanGrowth Differentiation Factor 15AdipocyteAdipokineAdipose tissueCerebrospinal fluidFat-Brain axisGDF15

Identifiers

PMID40820083
PMCPMC12358616

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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.