Evidence map›Paper›PMID 23139350›Full record

ArticleDiabetes2013

Inhibition of carnitine palmitoyltransferase-1 activity alleviates insulin resistance in diet-induced obese mice.

Wendy Keung, John R Ussher, Jagdip S Jaswal, Monique Raubenheimer, Victoria H M Lam, Cory S Wagg, Gary D Lopaschuk

Open access · bronzeAbstract read
In one paragraph

Article in Diabetes, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers.

0numbers the graph read from it
0cells of the map it votes in
64citing papers in PubMed
5.9field-weighted citation impact, top 3% 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

64 citing papers in PubMed, 125 citations in OpenAlex.

  1. Trial
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  6. The emerging metabolic role and treatment target of CPT1A in CRC.Frontiers in cell and developmental biology · 2026
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  13. Small molecule inhibitors for cancer metabolism: promising prospects to be explored.Journal of cancer research and clinical oncology · 2023
    Review
  14. Article
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  16. Targeting Energy Metabolism in Cancer Treatment.International journal of molecular sciences · 2022
    Review
  17. Article
  18. Article
  19. Article
  20. Article

4 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 1 institution in 1 country.

Wendy KeungCardiovascular Research Centre, Mazankowski Alberta Heart Institute, Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada.
John R Ussher
Jagdip S Jaswal
Monique Raubenheimer
Victoria H M Lam
Cory S Wagg
Gary D Lopaschuk
University of Alberta · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Impaired skeletal muscle fatty acid oxidation has been suggested to contribute to insulin resistance and glucose intolerance. However, increasing muscle fatty acid oxidation may cause a reciprocal decrease in glucose oxidation, which might impair insulin sensitivity and glucose tolerance. We therefore investigated what effect inhibition of mitochondrial fatty acid uptake has on whole-body glucose tolerance and insulin sensitivity in obese insulin-resistant mice. C57BL/6 mice were fed a high-fat diet (60% calories from fat) for 12 weeks to develop insulin resistance. Subsequent treatment of mice for 4 weeks with the carnitine palmitoyltransferase-1 inhibitor, oxfenicine (150 mg/kg i.p. daily), resulted in improved whole-body glucose tolerance and insulin sensitivity. Exercise capacity was increased in oxfenicine-treated mice, which was accompanied by an increased respiratory exchange ratio. In the gastrocnemius muscle, oxfenicine increased pyruvate dehydrogenase activity, membrane GLUT4 content, and insulin-stimulated Akt phosphorylation. Intramyocellular levels of lipid intermediates, including ceramide, long-chain acyl CoA, and diacylglycerol, were also decreased. Our results demonstrate that inhibition of mitochondrial fatty acid uptake improves insulin sensitivity in diet-induced obese mice. This is associated with increased carbohydrate utilization and improved insulin signaling in the skeletal muscle, suggestive of an operating Randle Cycle in muscle.

Indexed as

Insulin ResistanceAnimalsAnti-Obesity AgentsCarbohydrate MetabolismCarnitine O-PalmitoyltransferaseCell MembraneDiet, High-FatEnzyme InhibitorsGlucose IntoleranceGlucose Transporter Type 4GlycineLipid MetabolismMaleMiceMice, Inbred C57BLMitochondria, Muscle4-hydroxyphenylglycineAnti-Obesity AgentsCarnitine O-PalmitoyltransferaseEnzyme InhibitorsGlucose Transporter Type 4GlycineSlc2a4 protein, mouse

Identifiers

PMID23139350
PMCPMC3581198
OpenAlexW2099656577

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.