Evidence map›Paper›PMID 33674907›Full record

ArticleOdontology2021

Epigallocatechin gallate affects the proliferation of human alveolar osteoblasts and periodontal ligament cells, as well as promoting cell differentiation by regulating PI3K/Akt signaling pathway.

Cheng Ding, Shulei Fu, Xing Chen, Chongchong Chen, Huiming Wang, Liangjun Zhong

Abstract read
PubMed Publisher
In one paragraph

Article in Odontology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.8field-weighted citation impact, top 28% 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

4 citing papers in PubMed, 9 citations in OpenAlex.

  1. A Review of the Impact of Green Tea (Current pharmaceutical design · 2026
    Review
  2. Phytochemicals in Treatment of Periodontal Disease: A Review of Mechanisms and Roles.Medical science monitor : international medical journal of experimental and clinical research · 2025
    Review
  3. Review
  4. Review
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 1 country.

Cheng DingThe Affiliated Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.
Shulei FuSchool of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang, China.
Xing ChenDepartment of Stomatology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang, China.
Chongchong ChenSchool of Medicine, Hangzhou Normal University, Hangzhou, Zhejiang, China.
Huiming WangThe Affiliated Stomatologic Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China. huiming_whming@163.com.
Liangjun ZhongDepartment of Stomatology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang, China. zhljun_liangj@163.com.
Hangzhou Normal University · CNZhejiang University Medical College Affiliated Stomatological Hospital · CNAffiliated Hospital of Hangzhou Normal University · CN

Funding

Project of Health and Science in Zhejiang 2016KYB233Project of Health and Science in Zhejiang 2019KY497
6 · The paper itself

Abstract

Human periodontal ligament cells (hPDLCs) and human alveolar osteoblasts (hAOBs) play pivotal roles in periodontium. The regulatory effects of epigallocatechin gallate (EGCG) on hPDLCs and hAOBs remained unclear. This study probed into the functions of EGCG treating periodontal diseases. Cultured hAOBs and hPDLCs were passaged and observed by microscopic examination, and alkaline phosphatase (ALP) and immumohistochemical staining were performed for verification. hAOBs and hPDLCs were treated with EGCG and LY294002 + EGCG, then the proliferation of the two cells was assayed by MTT. Mineralization of the treated hAOBs and hPDLCs was detected by ALP activity experiment and Alizarin Red S staining kit. Quantitative real-time polymerase chain reaction (qRT-PCR) and Western blotting were performed for the detection of the expressions of differentiation-related mRNAs and PI3K/Akt signaling pathway-related proteins in the two cells. The third passage of hAOBs mainly showed triangle shape and were positive by ALP staining. hPDLCs in passage 3 adhered to the wall in spiral or radial pattern with positively stained vimentin and negatively stained keratin. Cell proliferation and ALP activity of the hAOBs and hPDLCs were increased by EGCG treatment. The mineralized nodules and expressions of differentiation-related mRNAs, the phosphorylation of PI3K and Akt of the hAOBs and hPDLCs were promoted by EGCG treatment, while the effects of LY294002 treatment were opposite to EGCG treatment. Epigallocatechin gallate affected the proliferation and differentiation of hAOBs and hPDLCs through regulating PI3K/Akt signaling pathway.

Indexed as

Periodontal LigamentPhosphatidylinositol 3-KinasesCatechinCell DifferentiationCell ProliferationCells, CulturedHumansOsteoblastsOsteogenesisProto-Oncogene Proteins c-aktSignal TransductionCatechinepigallocatechin gallatePhosphatidylinositol 3-KinasesProto-Oncogene Proteins c-aktAlveolar osteoblastsEpigallocatechin gallatePeriodontal diseasePeriodontal ligament cellsPeriodontium

Identifiers

PMID33674907
OpenAlexW3135576090

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.