Evidence map›Paper›PMID 34836374›Full record

ArticleNutrients2021

Role of Epigallocatechin Gallate in Glucose, Lipid, and Protein Metabolism and L-Theanine in the Metabolism-Regulatory Effects of Epigallocatechin Gallate.

Ling Lin, Li Zeng, An Liu, Dongyin Yuan, Yingqi Peng, Sheng Zhang, Yinhua Li, Jinhua Chen, Wenjun Xiao, Zhihua Gong

Open access · goldAbstract read
In one paragraph

Article in Nutrients, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.5field-weighted citation impact, top 18% 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, 19 citations in OpenAlex.

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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

10 authors at 2 institutions in 1 country.

Ling LinKey Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China.
Li ZengSchool of Pharmacy, Shaoyang University, Shaoyang 422002, China.ORCID 0000-0001-7365-9998
An LiuKey Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China.
Dongyin YuanKey Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China.
Yingqi PengKey Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China.
Sheng ZhangKey Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China.ORCID 0000-0003-2288-1120
Yinhua LiKey Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China.
Jinhua ChenKey Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China.
Wenjun XiaoKey Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China.
Zhihua GongKey Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha 410128, China.
Hunan Agricultural University · CNShaoyang University · CN

Funding

Department of science and technology of Hunan Province 2020NK2030Department of science and technology of Hunan Province 2021NK2016National Natural Science Foundation of China 31871804
6 · The paper itself

Abstract

Epigallocatechin gallate (EGCG) and L-theanine (LTA) are important bioactive components in tea that have shown promising effects on nutrient metabolism. However, whether EGCG alone or combined with LTA can regulate the glucose, lipid, and protein metabolism of healthy rats remains unclear. Therefore, we treated healthy rats with EGCG or the combination of EGCG and LTA (EGCG+LTA) to investigate the effects of EGCG on nutrient metabolism and the role of LTA in the metabolism-regulatory effects of EGCG. The results showed that compared with the control group, EGCG activated insulin and AMP-activated protein kinase (AMPK) signals, thus regulating glucose, lipid, and protein metabolism. Compared with EGCG, EGCG+LTA enhanced hepatic and muscle glycogen levels and suppressed phosphorylation of AMPK, glycogen synthase 2, mammalian target of rapamycin, and ribosomal protein S6 kinase. In addition, EGCG+LTA inhibited the expression of liver kinase B1, insulin receptor and insulin receptor substrate, and promoted the phosphorylation level of acetyl-CoA carboxylase. Furthermore, both EGCG and EGCG+LTA were harmless for young rats. In conclusion, EGCG activated AMPK and insulin pathways, thereby promoting glycolysis, glycogen, and protein synthesis and inhibiting fatty acid (FA) and cholesterol synthesis. However, LTA cooperated with EGCG to promote glycogen metabolism and suppressed the effect EGCG on FA and protein synthesis via AMPK signals.

Indexed as

Acetyl-CoA CarboxylaseAMP-Activated Protein Kinase KinasesAMP-Activated Protein KinasesAnimalsCamellia sinensisCatechinDrug InteractionsGlucoseGlutamatesGlycogenGlycogen SynthaseInsulinLipid MetabolismLiverMaleMusclesAcetyl-CoA CarboxylaseAMP-Activated Protein Kinase KinasesAMP-Activated Protein KinasesCatechinepigallocatechin gallateGlucoseGlutamatesGlycogenGlycogen SynthaseInsulinPlant ExtractsProteinsReceptor, InsulinRibosomal Protein S6 KinasesSTK11 protein, humanTeatheanineTOR Serine-Threonine KinasesAMP-activated protein kinase pathwayepigallocatechin gallateinsulin pathwayL-theaninenutrient metabolism

Identifiers

PMID34836374
PMCPMC8620046
OpenAlexW3213505621

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.