Evidence map›Paper›PMID 21934355›Full record

ReviewIslets

The pyruvate carboxylase-pyruvate dehydrogenase axis in islet pyruvate metabolism: Going round in circles?

Mary C Sugden, Mark J Holness

Open access · bronzeAbstract readReview
In one paragraph

Review in Islets. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
2.7field-weighted citation impact, top 11% 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

27 citing papers in PubMed, 61 citations in OpenAlex.

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  13. Regulation of Mitochondrial Function by Epac2 Contributes to Acute Inflammatory Hyperalgesia.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2021
    Article
  14. Decreased Blood Glucose and Lactate: Is a Useful Indicator of Recovery Ability in Athletes?International journal of environmental research and public health · 2020
    Review
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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

2 authors at 2 institutions in 2 countries.

Mary C SugdenCentre for Diabetes, Blizard Institute, Bart's and the London School of Medicine and Dentistry, London, UK. m.c.sugden@qmul.ac.uk
Mark J Holness
Diabetes Australia · AUQueen Mary University of London · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Pyruvate is the major product of glycolysis in pancreatic β-cells, and its ultimate metabolic fate depends on the relative activities of two enzymes. The first, pyruvate carboxylase (PC) replenishes oxaloacetate withdrawn from the tricarboxylic acid (TCA) cycle via the carboxylation of pyruvate to form oxaloacetate. Flux via PC is also involved in the formation of NADPH, one of several important coupling factors for insulin secretion. In most tissues, PC activity is enhanced by increased acetyl-CoA. The alternative fate of pyruvate is its oxidative decarboxylation to form acetyl-CoA via the pyruvate dehydrogenase complex (PDC). The ultimate fate of acetyl-CoA carbon is oxidation to CO2 via the TCA cycle, and so the PDC reaction results of the irreversible loss of glucose-derived carbon. Thus, PDC activity is stringently regulated. The mechanisms controlling PDC activity include end-product inhibition by increased acetyl-CoA, NADH and ATP, and its phosphorylation (inactivation) by a family of pyruvate dehydrogenase kinases (PDHKs 1-4). Here we review new developments in the regulation of the activities and expression of PC, PDC and the PDHKs in the pancreatic islet in relation to islet pyruvate disposition and glucose-stimulated insulin secretion (GSIS).

Indexed as

Acetyl Coenzyme AAnimalsCitric Acid CycleGlucoseHumansInsulinInsulin SecretionIslets of LangerhansProtein Serine-Threonine KinasesPyruvate CarboxylasePyruvate Dehydrogenase Acetyl-Transferring KinasePyruvate Dehydrogenase ComplexAcetyl Coenzyme AGlucoseInsulinProtein Serine-Threonine KinasesPyruvate CarboxylasePyruvate Dehydrogenase Acetyl-Transferring KinasePyruvate Dehydrogenase Complex

Identifiers

PMID21934355
PMCPMC3329512
OpenAlexW2096205853

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.