Evidence map›Paper›PMID 34944588›Full record

ArticleBiomedicines2021

Neuromodulation Induced by Sitagliptin: A New Strategy for Treating Diabetic Retinopathy.

Hugo Ramos, Patricia Bogdanov, David Sabater, Jordi Huerta, Marta Valeri, Cristina Hernández, Rafael Simó

Open access · goldAbstract read
In one paragraph

Article in Biomedicines, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 22% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 15 citations in OpenAlex.

  1. Pooled it
  2. Neuroprotection in Early Diabetic Retinal Disease Using Eyedrop Delivery.International journal of molecular sciences · 2026
    Review
  3. Review
  4. Neuroprotection in Diabetes Retinal Disease: An Unmet Medical Need.International journal of molecular sciences · 2026
    Review
  5. Targeting neuroinflammation in neurodegenerative disorders: the emerging potential of semaglutide.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2026
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Proteomic analysis of diabetic retinas.Frontiers in endocrinology · 2023
    Article
  12. Article
  13. 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

7 authors at 2 institutions in 1 country.

Hugo RamosDiabetes and Metabolism Research Unit, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona, 08035 Barcelona, Spain.ORCID 0000-0001-6443-7576
Patricia BogdanovDiabetes and Metabolism Research Unit, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona, 08035 Barcelona, Spain.ORCID 0000-0003-0669-4958
David SabaterDiabetes and Metabolism Research Unit, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona, 08035 Barcelona, Spain.ORCID 0000-0001-8113-8594
Jordi HuertaDiabetes and Metabolism Research Unit, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona, 08035 Barcelona, Spain.ORCID 0000-0002-9908-8051
Marta ValeriUnit of High Technology, Vall d'Hebron Research Institute, 08035 Barcelona, Spain.
Cristina HernándezDiabetes and Metabolism Research Unit, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona, 08035 Barcelona, Spain.ORCID 0000-0002-3109-1721
Rafael SimóDiabetes and Metabolism Research Unit, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona, 08035 Barcelona, Spain.ORCID 0000-0003-0475-3096
Universitat Autònoma de Barcelona · ESVall d'Hebron Institut de Recerca · ES

Funding

Instituto de Salud Carlos III DTS18/0163, PI19/01215 and ICI20/00129Ministry of Economy, Industry and Competitiveness PID2019-104225RB-I00
6 · The paper itself

Abstract

Diabetic retinopathy (DR) involves progressive neurovascular degeneration of the retina. Reduction in synaptic protein expression has been observed in retinas from several diabetic animal models and human retinas. We previously reported that the topical administration (eye drops) of sitagliptin, a dipeptidyl peptidase-4 (DPP-4) inhibitor, prevented retinal neurodegeneration induced by diabetes in db/db mice. The aim of the present study is to examine whether the modulation of presynaptic proteins is a mechanism involved in the neuroprotective effect of sitagliptin. For this purpose, 12 db/db mice, aged 12 weeks, received a topical administration of sitagliptin (5 μL; concentration: 10 mg/mL) twice per day for 2 weeks, while other 12 db/db mice were treated with vehicle (5 μL). Twelve non-diabetic mice (db/+) were used as a control group. Protein levels were assessed by western blot and immunohistochemistry (IHC), and mRNA levels were evaluated by reverse transcription polymerase chain reaction (RT-PCR). Our results revealed a downregulation (protein and mRNA levels) of several presynaptic proteins such as synapsin I (

Indexed as

db/db mouse modeldiabetic retinopathydipeptidyl peptidase 4 inhibitorspresynaptic proteinsretinal neurodegenerationsitagliptin

Identifiers

PMID34944588
PMCPMC8698405
OpenAlexW3215833582

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.