Evidence map›Paper›PMID 10349999›Full record

ArticlePharmaceutical research1999

Monolayers of human alveolar epithelial cells in primary culture for pulmonary absorption and transport studies.

K J Elbert, U F Schäfer, H J Schäfers, K J Kim, V H Lee, C M Lehr

Abstract read
PubMed Publisher
In one paragraph

Article in Pharmaceutical research, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
4.2field-weighted citation impact, top 6% 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

45 citing papers in PubMed, 175 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. A multiplex inhalation platform to modelFrontiers in pharmacology · 2023
    Article
  9. Article
  10. Article
  11. Human Multi-CompartmentFrontiers in physiology · 2022
    Article
  12. Review
  13. Regenerative medicine technologies applied to transplant medicine. An update.Frontiers in bioengineering and biotechnology · 2022
    Review
  14. Article
  15. Article
  16. Permeability Properties of anCellular and molecular bioengineering · 2021
    Article
  17. Article
  18. Article
  19. Article
  20. 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

6 authors at 3 institutions in 2 countries.

K J ElbertDepartment of Biopharmaceutics and Pharmaceutical Technology, Saarland University, Saarbrücken, Germany.
U F Schäfer
H J Schäfers
K J Kim
V H Lee
C M Lehr
Saarland University · DERogers (United States) · USUniversity of Southern California · US

Funding

Regulation of lung alveolar epithelial protein transportR01HL038658 · NHLBI · WEILL MEDICAL COLLEGE OF CORNELL UNIV · PI KIM, KWANG-JIN · 1989 to 2005
$1.4M
PARACELLULAR PEPTIDE TRANSPORT ACROSS THE INTESTINER01GM052812 · NIGMS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI LEE, VINCENT H.L. · 1995 to 1997
–
NO2 INDUCED PEROXIDATION PRODUCTS AND AIRWAY REACTIVITYR01HL046943 · NHLBI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI FORMAN, HENRY J · 1997 to 1999
–
NO2-INDUCED PEROXIDATION PRODUCTS AND AIRWAY REACTIVITYR29HL046943 · NHLBI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI ROBISON, TIMOTHY WALTER · 1992 to 1995
–
NHLBI NIH HHS HL38658NHLBI NIH HHS HL46943NIGMS NIH HHS GM52812
6 · The paper itself

Abstract

purposeTo develop a cell culture model of human alveolar epithelial cells in primary culture for the in vitro study of pulmonary absorption and transport.

methodsType II pneumocytes isolated from normal human distal lung tissue by enzyme treatment and subsequent purification were plated on fibronectin/collagen coated polyester filter inserts, and cultured using a low-serum growth medium. Characterization of the cell culture was achieved by bioelectric measurements, cell-specific lectin binding, immunohistochemical detection of cell junctions, and by assessment of transepithelial transport of dextrans of varying molecular weights.

resultsIn culture, the isolated cells spread into confluent monolayers, exhibiting peak transepithelial resistance of 2,180 +/- 62 ohms x cm2 and potential difference of 13.5 +/- 1.0 mV (n = 30-48), and developing tight junctions as well as desmosomes. As assessed by lectin-binding, the cell monolayers consisted of mainly type I cells with some interspersed type II cells, thus well mimicking the situation in vivo. The permeability of hydrophilic macromolecular FITC-dextrans across the cell monolayer was found to be inversely related to their molecular size, with Papp values ranging from 1.7 to 0.2 x 10(-8) cm/sec.

conclusionsA primary cell culture model of human alveolar epithelial cells has been established, which appears to be a valuable in vitro model for pulmonary drug delivery and transport studies.

Indexed as

AbsorptionAdministration, InhalationBiological TransportCell Culture TechniquesCells, CulturedCell SeparationDextransDrug Delivery SystemsElectric ConductivityElectric ImpedanceEpithelial CellsFluorescein-5-isothiocyanateFluorescent Antibody TechniqueHumansLectinsMembranes, ArtificialDextransFluorescein-5-isothiocyanatefluorescein isothiocyanate dextranLectinsMembranes, Artificial

Identifiers

PMID10349999
OpenAlexW1512123420

What OpenQuestion holds

Textmetadata
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.