Evidence map›Paper›PMID 11686863›Full record

ReviewRespiratory research2001

Alveolar epithelial type II cell: defender of the alveolus revisited.

H Fehrenbach

Open access · goldAbstract readReview
In one paragraph

Review in Respiratory research, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 343 papers.

0numbers the graph read from it
0cells of the map it votes in
343citing papers in PubMed
8.2field-weighted citation impact, top 2% 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

343 citing papers in PubMed, 732 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Cellular plasticity and regenerative mechanisms in the lung.European respiratory review : an official journal of the European Respiratory Society · 2026
    Review
  17. Article
  18. Photobiomodulation therapy enhances surfactant production in premature rat lungs: a non-invasive therapeutic strategy for neonatal respiratory distress syndromes.Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology · 2025
    Article
  19. Article
  20. CYP1B1 Mediates Cigarette Smoke-Induced Lipid Accumulation in Alveolar Type 2 Cells.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025
    Article

283 more citing papers are in PubMed but not listed here.

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

1 author at 1 institution in 1 country.

H FehrenbachInstitute of Pathology, University Clinics Carl Gustav Carus, Technical University of Dresden, Germany. hefeh@rcs.urz.tu-dresden.de
University Hospital Carl Gustav Carus · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In 1977, Mason and Williams developed the concept of the alveolar epithelial type II (AE2) cell as a defender of the alveolus. It is well known that AE2 cells synthesise, secrete, and recycle all components of the surfactant that regulates alveolar surface tension in mammalian lungs. AE2 cells influence extracellular surfactant transformation by regulating, for example, pH and [Ca2+] of the hypophase. AE2 cells play various roles in alveolar fluid balance, coagulation/fibrinolysis, and host defence. AE2 cells proliferate, differentiate into AE1 cells, and remove apoptotic AE2 cells by phagocytosis, thus contributing to epithelial repair. AE2 cells may act as immunoregulatory cells. AE2 cells interact with resident and mobile cells, either directly by membrane contact or indirectly via cytokines/growth factors and their receptors, thus representing an integrative unit within the alveolus. Although most data support the concept, the controversy about the character of hyperplastic AE2 cells, reported to synthesise profibrotic factors, proscribes drawing a definite conclusion today.

Indexed as

AnimalsEpithelial CellsHumansPulmonary AlveoliPulmonary SurfactantsStem CellsPulmonary Surfactants

Identifiers

PMID11686863
PMCPMC59567
OpenAlexW1502147118

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.