Evidence map›Paper›PMID 34012879›Full record

ArticleInternational journal of ophthalmology2021

Protective effects of piperine on the retina of mice with streptozotocin-induced diabetes by suppressing HIF-1/VEGFA pathway and promoting PEDF expression.

Pu Zhang, Yan-Dan Zhou, Yao Tan, Ling Gao

Open access · goldAbstract read
In one paragraph

Article in International journal of ophthalmology, 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
2.4field-weighted citation impact, top 12% 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, 20 citations in OpenAlex.

  1. Article
  2. Piperine alleviates retinal ischemic injury by mediating the APE1 signaling.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Article
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  8. Transcription factor FOXP1 mediates vascular endothelial dysfunction in diabetic retinopathy.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2022
    Article
  9. Article
  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

4 authors at 1 institution in 1 country.

Pu ZhangDepartment of Ophthalmology, the Second Xiangya Hospital, Central South University, Changsha 410011, Hunan Province, China.
Yan-Dan ZhouDepartment of Ophthalmology, the Second Xiangya Hospital, Central South University, Changsha 410011, Hunan Province, China.
Yao TanDepartment of Ophthalmology, the Second Xiangya Hospital, Central South University, Changsha 410011, Hunan Province, China.
Ling GaoDepartment of Ophthalmology, the Second Xiangya Hospital, Central South University, Changsha 410011, Hunan Province, China.
Central South University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimTo evaluate the protective mechanisms of piperine in the retina of mice with streptozotocin-induced diabetes.

methodsIn experiments

resultsIn hypoxia, 1-100 µmol/L piperine significantly decreased the expression of VEGFA mRNA and increased the expression of PEDF mRNA without affecting HIF-1α mRNA. Meanwhile, 100 µmol/L piperine substantially decreased the protein level of VEGFA and increased the protein level of PEDF. The HIF-1α protein level was also hampered by piperine. In the diabetic retina of mice, the morphological damage was alleviated by piperine. Likewise, the retinal vascular leakage was substantially decreased by piperine. Further, the protein levels of HIF-1α and VEGFA were significantly reduced by piperine. Moreover, the level of the antiangiogenic factor of PEDF dramatically increased by piperine.

conclusionPiperine may exert protective effects on the retina of mice with diabetes

Indexed as

diabetesdiabetic retinopathyhypoxia-inducible factor-1α/vascular endothelial growth factor A pathwaymicepigment epithelium-derived factorpiperine

Identifiers

PMID34012879
PMCPMC8077001
OpenAlexW3158043442

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.