Evidence map›Paper›PMID 32349261›Full record

ReviewInternational journal of molecular sciences2020

On Top of the Alveolar Epithelium: Surfactant and the Glycocalyx.

Matthias Ochs, Jan Hegermann, Elena Lopez-Rodriguez, Sara Timm, Geraldine Nouailles, Jasmin Matuszak, Szandor Simmons, Martin Witzenrath, Wolfgang M Kuebler

Open access · goldAbstract readReview
In one paragraph

Review in International journal of molecular sciences, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
4.1field-weighted citation impact, top 5% 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

34 citing papers in PubMed, 57 citations in OpenAlex.

  1. Airway macrophage specific glycocalyx expression and remodeling following viral infection.Matrix biology : journal of the International Society for Matrix Biology · 2026
    Article
  2. Naive CD4iScience · 2026
    Article
  3. Article
  4. Article
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  6. Enzymatic Modulation of the Pulmonary Glycocalyx Enhances Susceptibility toAmerican journal of respiratory cell and molecular biology · 2024
    Article
  7. Article
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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

9 authors at 3 institutions in 1 country.

Matthias OchsInstitute of Functional Anatomy, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.
Jan HegermannResearch Core Unit Electron Microscopy and Institute of Functional and Applied Anatomy, Hannover Medical School, 30625 Hannover, Germany.
Elena Lopez-RodriguezInstitute of Functional Anatomy, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.
Sara TimmCore Facility Electron Microscopy, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.
Geraldine NouaillesDepartment of Infectious Diseases and Respiratory Medicine, and Division of Pulmonary Inflammation, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.
Jasmin MatuszakInstitute of Physiology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.
Szandor SimmonsInstitute of Physiology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.
Martin WitzenrathGerman Center for Lung Research (DZL), 10117 Berlin, Germany.
Wolfgang M KueblerGerman Center for Lung Research (DZL), 10117 Berlin, Germany.
Charité - Universitätsmedizin Berlin · DEGerman Center for Lung Research · DEMedizinische Hochschule Hannover · DE

Funding

Bundesministerium für Bildung und Forschung German Center for Lung Research DZL; 01DG14009 and e:Med CAPSyS; 01ZX1604BDeutsche Forschungsgemeinschaft OC23/7-3, 8-1, 9-3, 10-1; SFB 587/TP B18; SFB-TR84/TP C06, C09; INST 192/504-1, 193/57-1; REBIRTH Cluster of Excellence
6 · The paper itself

Abstract

Gas exchange in the lung takes place via the air-blood barrier in the septal walls of alveoli. The tissue elements that oxygen molecules have to cross are the alveolar epithelium, the interstitium and the capillary endothelium. The epithelium that lines the alveolar surface is covered by a thin and continuous liquid lining layer. Pulmonary surfactant acts at this air-liquid interface. By virtue of its biophysical and immunomodulatory functions, surfactant keeps alveoli open, dry and clean. What needs to be added to this picture is the glycocalyx of the alveolar epithelium. Here, we briefly review what is known about this glycocalyx and how it can be visualized using electron microscopy. The application of colloidal thorium dioxide as a staining agent reveals differences in the staining pattern between type I and type II alveolar epithelial cells and shows close associations of the glycocalyx with intraalveolar surfactant subtypes such as tubular myelin. These morphological findings indicate that specific spatial interactions between components of the surfactant system and those of the alveolar epithelial glycocalyx exist which may contribute to the maintenance of alveolar homeostasis, in particular to alveolar micromechanics, to the functional integrity of the air-blood barrier, to the regulation of the thickness and viscosity of the alveolar lining layer, and to the defence against inhaled pathogens. Exploring the alveolar epithelial glycocalyx in conjunction with the surfactant system opens novel physiological perspectives of potential clinical relevance for future research.

Indexed as

Alveolar Epithelial CellsAnimalsGlycocalyxHumansPulmonary AlveoliPulmonary SurfactantsRespiratory MucosaPulmonary Surfactantsair-blood barrierair-liquid interfacealveolar lining layeralveoliepitheliumglycocalyxlungsurfactant

Identifiers

PMID32349261
PMCPMC7246550
OpenAlexW3018613164

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.