Evidence map›Paper›PMID 1939746›Full record

ArticleJournal of comparative physiology. B, Biochemical, systemic, and environmental physiology1991

Short-chain fatty acids and CO2 as regulators of Na+ and Cl- absorption in isolated sheep rumen mucosa.

G Gäbel, S Vogler, H Martens

Abstract read
PubMed Publisher
In one paragraph

Article in Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology, 1991. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 20% 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, 1 synthesis or guideline pooled it, 94 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Butyrate Permeation across the Isolated Ovine Reticulum Epithelium.Animals : an open access journal from MDPI · 2020
    Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Short-term adaptation of the ruminal epithelium involves abrupt changes in sodium and short-chain fatty acid transport.American journal of physiology. Regulatory, integrative and comparative physiology · 2014
    Article
  15. Article
  16. Article
  17. Transport of acetate and sodium in sheep omasum: mutual, but asymmetric interactions.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2006
    Article
  18. Luminal hyperosmolarity decreases Na transport and impairs barrier function of sheep rumen epithelium.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2005
    Article
  19. Effects of seasonal changes in food quality and food intake on the transport of sodium and butyrate across ruminal epithelium of reindeer.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2003
    Article
  20. Effect of nitric oxide on electrolyte transport across the porcine proximal colon.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2003
    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

3 authors at 1 institution in 1 country.

G GäbelInstitut für Veterinärphysiologie, Freie Universität Berlin, Federal Republic of Germany.
S Vogler
H Martens
Freie Universität Berlin · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Unidirectional 22Na+ and 36Cl- fluxes were determined in short-circuited, stripped rumen mucosa from sheep by using the Ussing chamber technique. In both CO2/HCO3(-)-containing and CO2/HCO3(-)-free solutions, replacement of gluconate by short-chain fatty acids (SCFA, 39mM) significantly enhanced mucosal-to-serosal Na+ absorption without affecting the Cl- transport in the same direction. Short-chain fatty acid stimulation of Na+ transport was at least partly independent of Cl- and could almost completely be abolished by 1 mM mucosal amiloride, while stimulation of Na+ transport was enhanced by lowering the mucosal pH from 7.3 to 6.5. Similar to the SCFA action, raising the PCO2 in the mucosal bathing solution led to an increase in the amiloride-sensitive mucosal-to-serosal Na+ flux. Along with its effect on sodium transport, raising the PCO2 also stimulated chloride transport. The results are best explained by a model in which undissociated SCFA and/or CO2 permeate the cell membrane and produce a raise in intracellular H+ concentration. This stimulates an apical Na+/H+ exchange, leading to increased Na+ transport. The stimulatory effect of CO2 on Cl- transport is probably mediated by a Cl-/HCO3- exchange mechanism in the apical membrane. Binding of SCFA anions to that exchange as described for the rat distal colon (Binder and Mehta 1989) probably does not play a major role in the rumen.

Indexed as

AmilorideAnimalsBiological Transport, ActiveCarbon DioxideChloridesFatty AcidsFatty Acids, VolatileGastric MucosaHydrogen-Ion ConcentrationIn Vitro TechniquesIon ExchangeRumenSheepSodiumAmilorideCarbon DioxideChloridesFatty AcidsFatty Acids, VolatileSodium

Identifiers

PMID1939746
OpenAlexW2042555181

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.