Evidence map›Paper›PMID 30730004›Full record

ArticleSurgery today2019

The protective effect of epigallocatechin 3-gallate on mouse pancreatic islets via the Nrf2 pathway.

Yuma Wada, Atsushi Takata, Tetsuya Ikemoto, Yuji Morine, Satoru Imura, Shuichi Iwahashi, Yu Saito, Mitsuo Shimada

Abstract read
PubMed Publisher
In one paragraph

Article in Surgery today, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
3.1field-weighted citation impact, top 9% 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Article
  5. Review
  6. Review
  7. Nrf2: The Master and Captain of Beta Cell Fate.Trends in endocrinology and metabolism: TEM · 2021
    Review
  8. Review
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  10. 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 1 institution in 1 country.

Yuma WadaDepartment of Surgery, Graduate School of Biomedical Sciences, Tokushima University, 3-18-15 Kuramoto-cho, 770-8503, Tokushima, Japan.ORCID http://orcid.org/0000-0002-5941-6866
Atsushi TakataDepartment of Surgery, Graduate School of Biomedical Sciences, Tokushima University, 3-18-15 Kuramoto-cho, 770-8503, Tokushima, Japan.
Tetsuya IkemotoDepartment of Surgery, Graduate School of Biomedical Sciences, Tokushima University, 3-18-15 Kuramoto-cho, 770-8503, Tokushima, Japan. ikemoto.tetsuya@tokushima-u.ac.jp.
Yuji MorineDepartment of Surgery, Graduate School of Biomedical Sciences, Tokushima University, 3-18-15 Kuramoto-cho, 770-8503, Tokushima, Japan.
Satoru ImuraDepartment of Surgery, Graduate School of Biomedical Sciences, Tokushima University, 3-18-15 Kuramoto-cho, 770-8503, Tokushima, Japan.
Shuichi IwahashiDepartment of Surgery, Graduate School of Biomedical Sciences, Tokushima University, 3-18-15 Kuramoto-cho, 770-8503, Tokushima, Japan.
Yu SaitoDepartment of Surgery, Graduate School of Biomedical Sciences, Tokushima University, 3-18-15 Kuramoto-cho, 770-8503, Tokushima, Japan.
Mitsuo ShimadaDepartment of Surgery, Graduate School of Biomedical Sciences, Tokushima University, 3-18-15 Kuramoto-cho, 770-8503, Tokushima, Japan.
Tokushima University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeEpigallocatechin 3-gallate (EGCG), a green tea polyphenol, has been shown to have anti-oxidant and anti-inflammatory effects in vitro and in vivo. The aim of this study was to investigate the effects and mechanism of EGCG on isolated pancreatic islets as pre-conditioning for pancreatic islet transplantation.

methodsThe pancreatic islets were divided into two groups: an islet culture medium group (control) and an islet culture medium with EGCG (100 µM) group. We investigated the islet viability, Nrf2 expression, reactive oxygen species (ROS) production, and heme oxygenase-1 (HO-1) mRNA. Five hundred islet equivalents after 12 h of culture for the EGCG 100 µM and control group were transplanted under the kidney capsule of streptozotocin-induced diabetic ICR mice.

resultsThe cell viability and insulin secretion ability in the EGCG group were preserved, and the nuclear translocation of Nrf2 was increased in the EGCG group (p < 0.01). While the HO-1 mRNA levels were also higher in the EGCG group than in the control group (p < 0.05), the ROS production was lower (p < 0.01). An in vivo functional assessment showed that the blood glucose level had decreased in the EGCG group after transplantation (p < 0.01).

conclusionEGCG protects the viability and function of islets by suppressing ROS production via the Nrf2 pathway.

Indexed as

AnimalsBlood GlucoseCatechinCell SurvivalGene ExpressionHeme Oxygenase-1Insulin SecretionIn Vitro TechniquesIslets of LangerhansIslets of Langerhans TransplantationMaleMice, Inbred C57BLMice, Inbred ICRNF-E2-Related Factor 2Reactive Oxygen SpeciesRNA, MessengerBlood GlucoseCatechinepigallocatechin gallateHeme Oxygenase-1Nfe2l2 protein, mouseNF-E2-Related Factor 2Reactive Oxygen SpeciesRNA, MessengerEpigallocatechin 3-gallate (EGCG)Islet transplantationNuclear factor erythroid 2-related factor 2 (Nrf2)Pre-conditioningReactive oxygen species (ROS) production

Identifiers

PMID30730004
OpenAlexW2913652292

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.