Evidence map›Paper›PMID 28756460›Full record

ArticleNaunyn-Schmiedeberg's archives of pharmacology2017

Ursolic acid activates the TGR5 receptor to enhance GLP-1 secretion in type 1-like diabetic rats.

Shih-Hsiang Lo, Yingxiao Li, Kai Chun Cheng, Chiang-Shan Niu, Juei-Tang Cheng, Ho-Shan Niu

Abstract read
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In one paragraph

Article in Naunyn-Schmiedeberg's archives of pharmacology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.0field-weighted citation impact, top 24% 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

14 citing papers in PubMed, 26 citations in OpenAlex.

  1. Review
  2. Review
  3. Guayusa (Molecules (Basel, Switzerland) · 2025
    Review
  4. Review
  5. Article
  6. Review
  7. Article
  8. Review
  9. Review
  10. Article
  11. Ursolic Acid and Its Derivatives as Bioactive Agents.Molecules (Basel, Switzerland) · 2019
    Review
  12. Bile-ology: from bench to bedside.Journal of Zhejiang University. Science. B · 2019
    Review
  13. Article
  14. 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 4 institutions in 2 countries.

Shih-Hsiang LoDivision of Cardiology, Department of Internal Medicine, Chung Hsing Branch of Taipei City Hospital, Taipei City, Taiwan, 10341.
Yingxiao LiDepartment of Psychosomatic Internal Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, 890-8520, Japan.
Kai Chun ChengDepartment of Psychosomatic Internal Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, 890-8520, Japan.
Chiang-Shan NiuDepartment of Nursing, Tzu Chi University of Science and Technology, Hualien City, Taiwan, 97005.
Juei-Tang ChengDepartment of Medical Research, Chi-Mei Medical Center, Yong Kang, Tainan City, Taiwan, 71003. jtcheng@mail.cjcu.edu.tw.
Ho-Shan NiuDepartment of Nursing, Tzu Chi University of Science and Technology, Hualien City, Taiwan, 97005.
Kagoshima University · JPTzu Chi University · TWChi Mei Medical Center · TWTaipei City Hospital · TW

Funding

Ministry of Science and Technology, Taiwan MOST 104-2320-B-384-004-MY3
6 · The paper itself

Abstract

Endogenous Takeda G-protein-coupled receptor 5 (TGR5), G-protein-coupled bile acid receptor 1 (GPBAR1), regulates glucose metabolism. In animals, TGR5 activation by a chemical agonist may increase incretin secretion and reduce the blood sugar level. Recently, betulinic acid has been suggested to activate TGR5. Ursolic acid is a well-known pentacyclic triterpenoid that is similar to betulinic acid. It is of special interest to determine the potential effect of ursolic acid on TGR5. Therefore, we transfected cultured Chinese hamster ovary (CHO-K1) cells with the TGR5 gene. The functions of the transfected cells were confirmed via glucose uptake using a fluorescent indicator. Moreover, NCI-H716 cells that secreted incretin were also investigated, and the glucagon-like peptide (GLP-1) levels were quantified using ELISA kits. In addition, streptozotocin (STZ)-induced type 1-like diabetic rats were used to identify the effect of ursolic acid in vivo. Ursolic acid concentration dependently increased glucose uptake in CHO-K1 cells expressing TGR5. In NCI-H716 cells, ursolic acid induced a concentration-dependent elevation in GLP-1 secretion, which was inhibited by triamterene at the effective concentrations to block TGR5. Ursolic acid also increased the plasma GLP-1 level via TGR5 activation, which was further characterized in vivo with type 1-like diabetic rats. Moreover, ursolic acid is more effective than betulinic acid in reduction of hyperglycemia and increase of GLP-1 secretion. Therefore, we demonstrated that ursolic acid can activate TGR5, enhancing GLP-1 secretion in vitro and in vivo. Therefore, ursolic acid is suitable for use in TGR5 activation.

Indexed as

AnimalsBlood GlucoseCell LineCHO CellsCricetulusDiabetes Mellitus, ExperimentalDiabetes Mellitus, Type 1Glucagon-Like Peptide 1HumansMaleRats, Sprague-DawleyReceptors, G-Protein-CoupledTriterpenesUrsolic AcidBlood GlucoseGlucagon-Like Peptide 1Gpbar1 protein, ratReceptors, G-Protein-CoupledTriterpenesUrsolic AcidSitagliptinTGR5TransfectionTriamtereneUrsolic acid

Identifiers

PMID28756460
OpenAlexW2741340574

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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.