Evidence map›Paper›PMID 9601000›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America1998

Water does not flow across the tight junctions of MDCK cell epithelium.

O Kovbasnjuk, J P Leader, A M Weinstein, K R Spring

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
1.3field-weighted citation impact, top 19% 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

25 citing papers in PubMed, 83 citations in OpenAlex.

  1. Regulation of epithelial tissue homeostasis by active transepithelial transport.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  2. Article
  3. ILDR1 is important for paracellular water transport and urine concentration mechanism.Proceedings of the National Academy of Sciences of the United States of America · 2017
    Article
  4. Article
  5. Claudins in barrier and transport function-the kidney.Pflugers Archiv : European journal of physiology · 2017
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Osmoregulation and epithelial water transport: lessons from the intestine of marine teleost fish.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2012
    Review
  13. Monitoring single-channel water permeability in polarized cells.The Journal of biological chemistry · 2011
    Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Na+ recirculation and isosmotic transport.The Journal of membrane biology · 2006
    Review
  19. Article
  20. Article
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

4 authors at 1 institution in 1 country.

O KovbasnjukLaboratory of Kidney and Electrolyte Metabolism, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892-1603, USA. kovbasno@fido.nhlbi.nih.gov
J P Leader
A M Weinstein
K R Spring
Cornell University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Although it has been known for decades that the tight junctions of fluid-transporting epithelia are leaky to ions, it has not been possible to determine directly whether significant transjunctional water movement also occurs. An optical microscopic technique was developed for the direct visualization of the flow velocity profiles within the lateral intercellular spaces of a fluid-absorptive, cultured renal epithelium (MDCK) and used to determine the velocity of the fluid flow across the tight junction. The flow velocity within the lateral intercellular spaces fell to near zero adjacent to the tight junction, showing that significant transjunctional flow did not occur, even when transepithelial fluid movement was augmented by imposition of osmotic gradients.

Indexed as

AnimalsBiological TransportCell LineDogsEpithelial CellsOsmolar ConcentrationTight JunctionsWaterWater

Identifiers

PMID9601000
PMCPMC27849
OpenAlexW2126617463

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.