Evidence map›Paper›PMID 41909693›Full record

ArticleFrontiers in immunology2026

Glycocalyx strengthens endothelial barrier function and protects from angioedema inducing compounds.

Anna Reich, Emily Lehnert, Raphael Möhrle, Angelina Gierke, Cornelia Brunner, Thomas K Hoffmann, Jens Greve, Janina Hahn, Robin Lochbaum

Abstract read
In one paragraph

Article in Frontiers in immunology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. 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

9 authors.

Anna Reich *Department of Otorhinolaryngology, Head and Neck Surgery, Ulm University Medical Center, Ulm, Germany.
Emily Lehnert *Department of Otorhinolaryngology, Head and Neck Surgery, Ulm University Medical Center, Ulm, Germany.
Raphael MöhrleDepartment of Otorhinolaryngology, Head and Neck Surgery, Ulm University Medical Center, Ulm, Germany.
Angelina GierkeDepartment of Otorhinolaryngology, Head and Neck Surgery, Ulm University Medical Center, Ulm, Germany.
Cornelia BrunnerDepartment of Otorhinolaryngology, Head and Neck Surgery, Ulm University Medical Center, Ulm, Germany.
Thomas K HoffmannDepartment of Otorhinolaryngology, Head and Neck Surgery, Ulm University Medical Center, Ulm, Germany.
Jens GreveDepartment of Otorhinolaryngology, Head and Neck Surgery, Ulm University Medical Center, Ulm, Germany.
Janina HahnDepartment of Otorhinolaryngology, Head and Neck Surgery, Ulm University Medical Center, Ulm, Germany.
Robin LochbaumDepartment of Otorhinolaryngology, Head and Neck Surgery, Ulm University Medical Center, Ulm, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Introduction: Hereditary angioedema (HAE) and mast cell-mediated angioedema are characterized by episodic swelling. Yet, atypical variants, such as HAE with normal C1 inhibitor, remain poorly understood and diagnostically challenging. Although advances in diagnosis and therapy have improved patient outcomes, investigating the role of the endothelial glycocalyx in regulating vascular permeability may uncover novel biomarkers and enhance both diagnostic and prognostic strategies. Materials and methods: Human umbilical vein endothelial cells (HUVEC) were treated with enzymes for glycocalyx degradation. Glycocalyx quantification was performed using wheat germ agglutinin (WGA) assays, enzyme-linked immunosorbent assays, and real time-polymerase chain reaction. Endothelial barrier function was evaluated through measurements of transendothelial electrical resistance (TEER), and permeability for dextrans. Water flux across the endothelium was determined using the D Results: HUVEC expressed a functional glycocalyx. Enzymatic glycocalyx degradation reduced barrier integrity. Bradykinin and serotonin did not affect glycocalyx integrity, while histamine reduced WGA binding. Bradykinin and histamine also decreased hyaluronidase activity. Barrier function analysis showed that glycocalyx degradation and compound exposure led to increased water permeability, with no additive effects on TEER and permeability. Discussion: Glycocalyx degradation increased endothelial permeability, with possible implication for edema development. Bradykinin and serotonin did not affect glycocalyx composition, but histamine reduced its integrity. Glycocalyx degradation led to a further increase in mediator-induced water permeability. This suggests a protective role of the glycocalyx endothelial dysfunction. This highlights its potential as a biomarker for angioedema.

Indexed as

AngioedemaCapillary PermeabilityEndothelium, VascularGlycocalyxHuman Umbilical Vein Endothelial CellsBradykininHistamineHumansSerotoninBradykininHistamineSerotoninbiomarkerbradykininendothelial barrierhistamineserotonin

Identifiers

PMID41909693
PMCPMC13017264

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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.