Evidence map›Paper›PMID 12943530›Full record

ArticleThe Biochemical journal2003

Proton conductance and fatty acyl composition of liver mitochondria correlates with body mass in birds.

Martin D Brand, Nigel Turner, Augustine Ocloo, Paul L Else, A J Hulbert

Abstract read
In one paragraph

Article in The Biochemical journal, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
–field-weighted citation impact
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

32 citing papers in PubMed.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Mitochondrial physiology varies with parity and body mass in the laboratory mouse (Mus musculus).Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2020
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Polyunsaturated fats, membrane lipids and animal longevity.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2014
    Review
  16. Review
  17. Article
  18. A kinetic approach to assess oxidative metabolism related features in the bivalve Mya arenaria.Theory in biosciences = Theorie in den Biowissenschaften · 2012
    Article
  19. Article
  20. Metabolic rate and membrane fatty acid composition in birds: a comparison between long-living parrots and short-living fowl.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2012
    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

5 authors.

Martin D BrandMRC Dunn Human Nutrition Unit, Hills Road, Cambridge CB2 2XY, UK. martin.brand@mrc-dunn.cam.ac.uk
Nigel Turner
Augustine Ocloo
Paul L Else
A J Hulbert

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The proton conductance of isolated liver mitochondria correlates significantly with body mass in mammals, but not in ectotherms. To establish whether the correlation in mammals is general for endotherms or mammal-specific, we measured proton conductance in mitochondria from birds, the other main group of endotherms, using birds varying in mass over a wide range (nearly 3000-fold), from 13 g zebra finches to 35 kg emus. Respiratory control ratios were higher in mitochondria from larger birds. Mitochondrial proton conductance in liver mitochondria from birds correlated strongly with body mass [respiration rate per mg of protein driving proton leak at 170 mV being 44.7 times (body mass in g)(-0.19)], thus suggesting a general relationship between body mass and proton conductance in endotherms. Mitochondria from larger birds had the same or perhaps greater surface area per mg of protein than mitochondria from smaller birds. Hence, the lower proton conductance was caused not by surface area changes but by some change in the properties of the inner membrane. Liver mitochondria from larger birds had phospholipid fatty acyl chains that were less polyunsaturated and more monounsaturated when compared with those from smaller birds. Phospholipid fatty acyl polyunsaturation correlated positively and monounsaturation correlated negatively with proton conductance. These correlations echo those seen in mammalian liver mitochondria, suggesting that they too are general for endotherms.

Indexed as

ProtonsAnimalsBirdsBody WeightFatty AcidsIon TransportMembrane PotentialsMitochondria, LiverOxygen ConsumptionPhospholipidsSpecies SpecificityFatty AcidsPhospholipidsProtons

Identifiers

PMID12943530
PMCPMC1223797

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.