Evidence map›Paper›PMID 41947413›Full record

ArticleAnnals of neurology2026

Cerebrospinal Fluid from Restless Legs Syndrome Patients Reduces Iron Uptake in Blood-Brain Barrier Endothelial Cells by Disrupting the Regulation of Transferrin Receptors.

Kondaiah Palsa, Aurosman Pappus Sahu, David B Rye, Lynn Marie Trotti, Irina A Elcheva, Vladimir S Spiegelman, James R Connor

Abstract read
In one paragraph

Article in Annals of neurology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Review
  2. Review
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.

Kondaiah PalsaDepartment of Neurosurgery, Penn State College of Medicine, Hershey, PA, USA.ORCID 0000-0002-2584-5750
Aurosman Pappus SahuDepartment of Neurosurgery, Penn State College of Medicine, Hershey, PA, USA.
David B RyeDepartment of Neurology and Emory Sleep Center, Emory University School of Medicine, Atlanta, GA, USA.
Lynn Marie TrottiDepartment of Neurology and Emory Sleep Center, Emory University School of Medicine, Atlanta, GA, USA.ORCID 0000-0003-2329-6847
Irina A ElchevaDivision of Pediatric Hematology and Oncology, Department of Pediatrics, Penn State College of Medicine, Hershey, PA, USA.
Vladimir S SpiegelmanDivision of Pediatric Hematology and Oncology, Department of Pediatrics, Penn State College of Medicine, Hershey, PA, USA.
James R ConnorDepartment of Neurosurgery, Penn State College of Medicine, Hershey, PA, USA.

Funding

Mechanisms and Regulation of Brain Iron UptakeR01NS113912 · NINDS · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI CONNOR, JAMES ROBERT · 2020 to 2024
$2.6M
NINDS NIH HHS R01NS113912Restless Legs Syndrome Foundation 171105
6 · The paper itself

Abstract

objectiveRestless legs syndrome (RLS) is a sensorimotor disorder marked by an uncontrollable urge to move the legs. A pathophysiological hallmark of RLS is brain iron deficiency. The endothelial cells (ECs) of the blood-brain barrier (BBB) are responsible for regulating brain iron uptake. Our objective is to determine if brain iron uptake is altered in ECs in RLS.

methodsHuman ECs were generated from induced pluripotent stem cells (iPSCs). ECs were exposed to RLS (n = 14) or control cerebrospinal fluid (CSF) (n = 15), and

resultsFree and protein-bound iron in CSF from RLS subjects were decreased compared to controls. Exposure of ECs to RLS CSF significantly decreased the uptake and transport of

interpretationWhen ECs are treated with CSF from RLS patients, they show a profile of iron deficiency, except that the TfR1 expression does not increase as would be predicted. The decrease in TfR1 protein expression is because of a reduction in TfR1 mRNA stability by the binding of increased miR-124-3p. ANN NEUROL 2026;100:48-58.

Indexed as

Blood-Brain BarrierEndothelial CellsIronReceptors, TransferrinRestless Legs SyndromeAdultAgedAntigens, CDFemaleHEK293 CellsHumansMaleMicroRNAsMiddle AgedAntigens, CDCD71 antigenIronMicroRNAsReceptors, Transferrin

Identifiers

PMID41947413
PMCPMC13327577

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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.