Evidence map›Paper›PMID 31091209›Full record

ArticlePancreas

Decrement in Cellular Iron and Reactive Oxygen Species, and Improvement of Insulin Secretion in a Pancreatic Cell Line Using Green Tea Extract.

Pimpisid Koonyosying, Chairat Uthaipibull, Suthat Fucharoen, Evangelia Vlachodimitropoulou Koumoutsea, John B Porter, Somdet Srichairatanakool

Open access · bronzeAbstract read
In one paragraph

Article in Pancreas. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
2.9field-weighted citation impact, top 8% 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

15 citing papers in PubMed, 29 citations in OpenAlex.

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  12. Effect ofArchives of Razi Institute · 2021
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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

6 authors at 4 institutions in 2 countries.

Pimpisid Koonyosying
Chairat UthaipibullProtein-Ligand Engineering and Molecular Biology Laboratory, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Thailand Science Park, Pathum Thani.
Suthat FucharoenThalassemia Research Center, Institute of Molecular Bioscience, Mahidol University Salaya Campus, Nakornpathom, Thailand.
Evangelia Vlachodimitropoulou KoumoutseaDepartment of Haematology, University College London, London, United Kingdom.
John B PorterDepartment of Haematology, University College London, London, United Kingdom.
Somdet Srichairatanakool
Chiang Mai University · THUniversity College London · GBMahidol University · THNational Center for Genetic Engineering and Biotechnology · TH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesWe have investigated the efficacy of mono- and combined therapy with green tea extract (GTE) in mobilizing redox iron, scavenging reactive oxygen species (ROS), and improving insulin production in iron-loaded pancreatic cells.

methodsRat insulinoma pancreatic β-cells were iron-loaded using culture medium supplemented with either fetal bovine serum or ferric ammonium citrate and treated with various doses of GTE for epigallocatechin-3-gallate (EGCG) equivalence and in combination with iron chelators. Cellular iron, ROS, and secretory insulin were measured.

resultsThe rat insulinoma pancreatic cells took up iron from fetal bovine serum more rapidly than ferric ammonium citrate. After treatment with GTE (0.23-2.29 μg EGCG equivalent), cellular levels of iron and ROS were dose dependently decreased. Importantly, secretory insulin levels were increased nearly 2.5-fold with 2.29 μg of EGCG equivalent GTE, indicating a recovery in insulin production.

conclusionsGreen tea EGCG ameliorated oxidative damage of iron-loaded β-cells by removing redox iron and free radicals and attenuating insulin production. The impact can result in the restoration of pancreatic functions and an increase in insulin production. Green tea extract exerts iron-chelating, free-radical scavenging, and pancreato-protective effects in the restoration of β-cell functions, all of which we believe can increase insulin production in diabetic β-thalassemia patients.

Indexed as

Animalsbeta-ThalassemiaCatechinCell Line, TumorDiabetes ComplicationsInsulinInsulin-Secreting CellsInsulin SecretionIronPhytotherapyPlant ExtractsRatsReactive Oxygen SpeciesTeaCatechinepigallocatechin gallateInsulinIronPlant ExtractsReactive Oxygen SpeciesTea

Identifiers

PMID31091209
PMCPMC6553981
OpenAlexW2944167445

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.