Evidence map›Paper›PMID 31480246›Full record

ArticleInternational journal of molecular sciences2019

Surfactant Protein B Deficiency Induced High Surface Tension: Relationship between Alveolar Micromechanics, Alveolar Fluid Properties and Alveolar Epithelial Cell Injury.

Nina Rühl, Elena Lopez-Rodriguez, Karolin Albert, Bradford J Smith, Timothy E Weaver, Matthias Ochs, Lars Knudsen

Open access · goldAbstract read
In one paragraph

Article in International journal of molecular sciences, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.8field-weighted citation impact, top 9% 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

18 citing papers in PubMed, 35 citations in OpenAlex.

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  13. On Top of the Alveolar Epithelium: Surfactant and the Glycocalyx.International journal of molecular sciences · 2020
    Review
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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

7 authors at 3 institutions in 2 countries.

Nina RühlInstitute of Functional and Applied Anatomy, Hannover Medical School, Hannover 30625, Germany.
Elena Lopez-RodriguezInstitute of Functional and Applied Anatomy, Hannover Medical School, Hannover 30625, Germany.ORCID 0000-0002-1549-8150
Karolin AlbertInstitute of Functional and Applied Anatomy, Hannover Medical School, Hannover 30625, Germany.
Bradford J SmithDepartment of Bioengineering, University of Colorado Denver, Denver, CO 80045, USA.ORCID 0000-0002-1583-6762
Timothy E WeaverDivision of Pulmonary Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45221, USA.
Matthias OchsInstitute of Functional and Applied Anatomy, Hannover Medical School, Hannover 30625, Germany.ORCID 0000-0002-0936-6979
Lars KnudsenInstitute of Functional and Applied Anatomy, Hannover Medical School, Hannover 30625, Germany. Knudsen.lars@mh-hannover.de.ORCID 0000-0002-7926-3879
Medizinische Hochschule Hannover · DEUniversity of Cincinnati Medical Center · USUniversity of Colorado Denver · US

Funding

Bundesministerium für Bildung und Forschung DZLDeutsche Forschungsgemeinschaft KN 916/3_1
6 · The paper itself

Abstract

High surface tension at the alveolar air-liquid interface is a typical feature of acute and chronic lung injury. However, the manner in which high surface tension contributes to lung injury is not well understood. This study investigated the relationship between abnormal alveolar micromechanics, alveolar epithelial injury, intra-alveolar fluid properties and remodeling in the conditional surfactant protein B (SP-B) knockout mouse model. Measurements of pulmonary mechanics, broncho-alveolar lavage fluid (BAL), and design-based stereology were performed as a function of time of SP-B deficiency. After one day of SP-B deficiency the volume of alveolar fluid V(alvfluid,par) as well as BAL protein and albumin levels were normal while the surface area of injured alveolar epithelium S(AEinjure,sep) was significantly increased. Alveoli and alveolar surface area could be recruited by increasing the air inflation pressure. Quasi-static pressure-volume loops were characterized by an increased hysteresis while the inspiratory capacity was reduced. After 3 days, an increase in V(alvfluid,par) as well as BAL protein and albumin levels were linked with a failure of both alveolar recruitment and airway pressure-dependent redistribution of alveolar fluid. Over time, V(alvfluid,par) increased exponentially with S(AEinjure,sep). In conclusion, high surface tension induces alveolar epithelial injury prior to edema formation. After passing a threshold, epithelial injury results in vascular leakage and exponential accumulation of alveolar fluid critically hampering alveolar recruitability.

Indexed as

Acinar CellsAlveolar Epithelial CellsAnimalsBiomechanical PhenomenaBronchoalveolar Lavage FluidDoxycyclineFemaleLungMice, KnockoutModels, BiologicalPulmonary Surfactant-Associated Protein BStructure-Activity RelationshipSurface TensionDoxycyclinePulmonary Surfactant-Associated Protein Bacinar micromechanicsacute lung injuryalveolar fluidatelectraumasurfactant protein B

Identifiers

PMID31480246
PMCPMC6747270
OpenAlexW2970797989

What OpenQuestion holds

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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.