Evidence map›Paper›PMID 25042861›Full record

ArticleInternational journal of obesity (2005)2015

Gamma-tocotrienol attenuates high-fat diet-induced obesity and insulin resistance by inhibiting adipose inflammation and M1 macrophage recruitment.

L Zhao, I Kang, X Fang, W Wang, M A Lee, R R Hollins, M R Marshall, S Chung

Abstract read
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In one paragraph

Article in International journal of obesity (2005), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed, 1 pooled it
3.9field-weighted citation impact, top 6% 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

45 citing papers in PubMed, 1 synthesis or guideline pooled it, 86 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Review
  5. Article
  6. Review
  7. Review
  8. Article
  9. Article
  10. Review
  11. Article
  12. Review
  13. Revisiting the therapeutic potential of tocotrienol.BioFactors (Oxford, England) · 2022
    Review
  14. Review
  15. Article
  16. Article
  17. Review
  18. Vitamin E beyond Its Antioxidant Label.Antioxidants (Basel, Switzerland) · 2021
    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

8 authors at 3 institutions in 1 country.

L ZhaoDepartment of Food Science and Human Nutrition, University of Florida, Gainesville, FL, USA.
I Kang1] Department of Food Science and Human Nutrition, University of Florida, Gainesville, FL, USA [2] Department of Nutrition and Health Sciences, University of Nebraska, Lincoln, NE, USA.
X FangDepartment of Pediatrics, College of Medicine, University of Florida, Gainesville, FL, USA.
W WangDepartment of Nutrition and Health Sciences, University of Nebraska, Lincoln, NE, USA.
M A LeeDepartment of Food Science and Human Nutrition, University of Florida, Gainesville, FL, USA.
R R HollinsDepartment of Surgery, College of Medicine, University of Nebraska, Omaha, NE, USA.
M R MarshallDepartment of Food Science and Human Nutrition, University of Florida, Gainesville, FL, USA.
S Chung1] Department of Food Science and Human Nutrition, University of Florida, Gainesville, FL, USA [2] Department of Nutrition and Health Sciences, University of Nebraska, Lincoln, NE, USA.
University of Florida · USUniversity of Nebraska–Lincoln · USUniversity of Nebraska at Omaha · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

objectiveWe have previously demonstrated that gamma tocotrienol (γT3) potently inhibits adipocyte hyperplasia in human adipose-derived stem cells (hASCs). In this study, our objective was to investigate the γT3 effects on early-onset obesity, inflammation and insulin resistance in vivo.

methodsYoung C57BL/6J mice were fed a high-fat (HF) diet supplemented with 0.05% γT3 for 4 weeks. The concentrations of γT3 in plasma and adipose tissue were measured using high-performance liquid chromatography. Effects of γT3 on body weight gain, adipose volume, plasma levels of fasting glucose, insulin (enzyme-linked immunosorbent assay (ELISA)), proinflammatory cytokines (mouse cytokine array), insulin signaling (western blotting) and gene expression (quantitative real-time PCR, qPCR) in the liver and adipose tissue were examined. Influences of γT3 on [3H]-2-deoxyglucose uptake and lipopolysaccharide (LPS)-mediated NFκB signaling (western blotting) were assessed in hASCs. Effects of γT3 on macrophage M1/M2 activation were investigated using qPCR in mouse bone marrow-derived macrophages.

resultsAfter a 4-week treatment, γT3 accumulated in adipose tissue and reduced HF diet-induced weight gain in epididymal fat, mesenteric fat and the liver. Compared with HF diet-fed mice, HF+γT3-fed mice were associated with (1) decreased plasma levels of fasting glucose, insulin and proinflammatory cytokines, (2) improved glucose tolerance and (3) enhanced insulin signaling in adipose tissue. There were substantial decreases in macrophage specific markers, and monocyte chemoattractant protein-1, indicating that γT3 reduced the recruitment of adipose tissue macrophages (ATMs). In addition, γT3 treatment in human adipocytes resulted in (1) activation of insulin-stimulated glucose uptake and (2) a significant suppression of MAP kinase and NFκB activation. In parallel, γT3 treatment led to a reduction of LPS-mediated M1 macrophage polarization.

conclusionOur results demonstrated that γT3 ameliorates HF diet-mediated obesity and insulin resistance by inhibiting systemic and adipose inflammation, as well as ATM recruitment.

Indexed as

Insulin ResistanceAdipose TissueAnimalsAnti-Obesity AgentsBlotting, WesternChromansDiet, High-FatDisease Models, AnimalEnzyme-Linked Immunosorbent AssayInflammationMacrophage ActivationMacrophagesMaleMiceMice, Inbred C57BLObesityAnti-Obesity AgentsChromansplastochromanol 8Vitamin E

Identifiers

PMID25042861
OpenAlexW2070677419

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.