Evidence map›Paper›PMID 28738845›Full record

ArticleBMC ophthalmology2017

Lutein and zeaxanthin isomers modulates lipid metabolism and the inflammatory state of retina in obesity-induced high-fat diet rodent model.

Mehmet Tuzcu, Cemal Orhan, Omer Ersin Muz, Nurhan Sahin, Vijaya Juturu, Kazım Sahin

Open access · goldAbstract read
In one paragraph

Article in BMC ophthalmology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 13% 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

51 citing papers in PubMed, 1 synthesis or guideline pooled it, 85 citations in OpenAlex.

  1. Pooled it
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  13. Review
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  20. Variations inGenes · 2023
    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

6 authors at 3 institutions in 2 countries.

Mehmet TuzcuFaculty of Science, Division of Biology, Firat University, Elazig, Turkey.
Cemal OrhanFaculty of Veterinary, Department of Animal Nutrition, Firat University, Elazig, Turkey.
Omer Ersin MuzDepartment of Ophthalmology, Elazig Education and Research Hospital, Elazig, Turkey.
Nurhan SahinFaculty of Veterinary, Department of Animal Nutrition, Firat University, Elazig, Turkey.
Vijaya JuturuResearch and Development, OmniActive Health Technologies Inc., Morristown, USA.
Kazım SahinFaculty of Veterinary, Department of Animal Nutrition, Firat University, Elazig, Turkey. nsahinkm@yahoo.com.
Fırat University · TRElazığ Eğitim ve Araştırma Hastanesi · TROmniActive Health Technologies (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSeveral studies associated high-fat intakes with a high incidence of age-related macular degeneration (AMD). Lutein and Zeaxanthin isomers (L/Zi) may counteract reactive oxygen species produced by oxidative stress. The present study was conducted to determine the possible effects of L/Zi administration on lipid profile, protein genes associated with oxidative stress and inflammation pathways in the obesity induced by a high-fat diet (HFD) in rodents.

methodsTwenty-eight male Wistar rats were allocated into four groups as follows: (i) Control, (ii) Control + L/Zi, (iii) High Fat Diet (HFD), and (iv) HFD+ L/Z. L/Zi was administrated for 8 weeks at a daily dose of 100 mg/kg BW.

resultsL/Zi administration significantly reduced insulin and free fatty acid (FFA) levels (P < 0.001) and ameliorated the oxidative damage by reducing malondialdehyde (MDA) concentration and increasing antioxidant enzymes activities of retina induced by HFD. In addition, supplementation decreased the levels of vascular endothelial growth factor (VEGF), inducible nitric oxide synthase (iNOS), nuclear factor-kappa B (NF-κB) and intercellular adhesion molecule-1 (ICAM) (P < 0.001, respectively) and improved nuclear factor erythroid 2-related factor 2 (Nrf2) and heme oxygenase 1 (HO-1) gene proteins in retinal tissues (P < 0.001).

conclusionRats fed with HFD exhibited increased oxidative stress and upregulation of inflammatory indicators. However, L/Zi supplementation modulates genes involved oxidative stress and inflammation including NF-κB and Nrf2 signaling pathways in the retina which may contribute to ameliorating retinal damage induced by HFD.

Indexed as

AnimalsBlotting, WesternDiet, High-FatDisease Models, AnimalLipid MetabolismLuteinMaleObesityOxidative StressRatsRats, WistarRetinaZeaxanthinsLuteinZeaxanthinsHigh fat dietLuteinNF-κBNrf2RetinaZeaxanthin

Identifiers

PMID28738845
PMCPMC5525211
OpenAlexW2738301571

What OpenQuestion holds

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LicenceCC BY
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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.