Evidence map›Paper›PMID 16187065›Full record

ArticleHistochemistry and cell biology2005

Distribution of surfactant proteins in type II pneumocytes of newborn, 14-day old, and adult rats: an immunoelectron microscopic and stereological study.

Andreas Schmiedl, Matthias Ochs, Christian Mühlfeld, Georg Johnen, Frank Brasch

Open access · greenAbstract read
PubMed Publisher
In one paragraph

Article in Histochemistry and cell biology, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
3.1field-weighted citation impact, top 8% 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, 1 synthesis or guideline pooled it, 44 citations in OpenAlex.

  1. Guideline
  2. Article
  3. Review
  4. Article
  5. Article
  6. Nanomedicine-Based Therapeutics to Combat Acute Lung Injury.International journal of nanomedicine · 2021
    Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Pathway to lamellar bodies for surfactant protein A.American journal of physiology. Lung cellular and molecular physiology · 2010
    Article
  13. Article
  14. Review
  15. Review
  16. Article
  17. Review
  18. 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

5 authors at 3 institutions in 2 countries.

Andreas SchmiedlCentre of Anatomy, Hannover School of Medicine, Carl-Neuberg-Strasse 1, 30625, Hannover, Germany. Schmiedl.Andreas@MH-Hannover.de
Matthias Ochs
Christian Mühlfeld
Georg Johnen
Frank Brasch
University of Göttingen · DEHannover Re (Germany) · DEUniversity of Bern · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Surfactant proteins (SP) have an important impact on the function of the pulmonary surfactant. In contrast to humans, rat lungs are immature at birth. Alveolarization starts on postnatal day 4. Little is known about the distribution of SP during postnatal alveolarization. By immunoelectron microscopy, we studied the distribution of SP-A, SP-D, SP-B, and precursors of SP-C in type II pneumocytes before, near the end and after alveolarization and in mature lungs. We determined the subcellular volume fractions and the relative labeling index to obtain information about preferential labeling of compartments and non-randomness of labeling. Independently of alveolarization, the overall cellular distribution of SP was non-random. A preferential labeling for SP-A and SP-D was found in small vesicles and multivesicular bodies (mvb). SP-B and precursors of SP-C were localized in mvb and lamellar bodies (lb). There are no postnatal changes in labeling for all three SP in these compartments. Labeling intensity for SP-B in lb increased in close correlation with a significant increase in the volume fractions of lb during alveolarization. Our results support the concept that postnatal alveolarization in rat lungs is associated with significant increases in the SP-B content in lb and volume fraction of lb in type II pneumocytes. The postnatal compartment-specific distribution of SP-A, precursors of SP-C and SP-D does not change.

Indexed as

AnimalsAnimals, NewbornImmunohistochemistryLungMicroscopy, ImmunoelectronProtein PrecursorsPulmonary Surfactant-Associated Protein APulmonary Surfactant-Associated Protein BPulmonary Surfactant-Associated Protein CPulmonary Surfactant-Associated Protein DPulmonary Surfactant-Associated ProteinsRatsRats, WistarSensitivity and SpecificityStaining and LabelingProtein PrecursorsPulmonary Surfactant-Associated Protein APulmonary Surfactant-Associated Protein BPulmonary Surfactant-Associated Protein CPulmonary Surfactant-Associated Protein DPulmonary Surfactant-Associated Proteins

Identifiers

PMID16187065
OpenAlexW2166551681

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.