Evidence map›Paper›PMID 34383800›Full record

ArticlePloS one2021

GLP-1 and GIP receptor agonists in the treatment of Parkinson's disease: Translational systematic review and meta-analysis protocol of clinical and preclinical studies.

Carolina Vaccari, Denise Grotto, Tiago da V Pereira, João Lauro V de Camargo, Luciane C Lopes

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 3 pooled it
1.6field-weighted citation impact, top 14% 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, 3 syntheses or guidelines pooled it, 24 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Article
  5. Review
  6. Review
  7. Metabolic Parkinson's disease.Frontiers in aging neuroscience · 2025
    Review
  8. Article
  9. Review
  10. Role of the Insulin-like Growth Factor System in Neurodegenerative Disease.International journal of molecular sciences · 2024
    Review
  11. Article
  12. Review
  13. Article
  14. 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

5 authors at 3 institutions in 3 countries.

Carolina VaccariDepartment of Pathology, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil.ORCID 0000-0002-7670-734X
Denise GrottoGraduate Course of Pharmaceutical Sciences, University of Sorocaba (UNISO), Sorocaba, São Paulo, Brazil.
Tiago da V PereiraApplied Health Research Centre, St. Michael's Hospital, University of Toronto, Toronto, Canada.
João Lauro V de CamargoDepartment of Pathology, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil.
Luciane C LopesGraduate Course of Pharmaceutical Sciences, University of Sorocaba (UNISO), Sorocaba, São Paulo, Brazil.
Universidade de Sorocaba · BRUniversidade Estadual Paulista (Unesp) · BRSt. Michael's Hospital · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundParkinson's disease (PD) is a progressive multifactorial neurodegenerative condition. Epidemiological studies have shown that patients with type 2 diabetes mellitus (T2DM2) are at increased risk for developing PD, indicating a possible insulin-modulating role in this latter condition. We hypothesized that drugs similar to glucagon-like peptide-1 (GLP-1) and gastric inhibitory polypeptide (GIP), used in the treatment of T2DM2, may play a role in PD.

objectivesThe purpose of this study is to systematically review and meta-analyze data of preclinical and clinical studies evaluating the efficacy and safety of GLP-1 and GIP drugs in the treatment of PD.

methodsTwo reviewers will independently evaluate the studies available in the Ovid Medline, Ovid Embase, Web of Science, Cochrane Central Register of Controlled Trials, Cinahl, and Lilacs databases. Preclinical rodent or non-human primate studies and randomized controlled human clinical trials will be included, without language or publication period restrictions. Outcomes of interest in preclinical studies will be primarily locomotor improvements and adverse effects in animal models of PD. For clinical trials, we will evaluate clinical improvements rated by the Movement Disorders Society Unified Parkinson's Disease Rating Scale-parts I, II, III, and IV, and adverse effects. The risk of bias of preclinical studies will be assessed by the SYRCLE tool and CAMARADES checklist and the clinical studies by the Cochrane tool; the certainty of the evidence will be rated by GRADE. DISCUSSION AND

conclusionThere is an urge for new PD treatments that may slow the progression of the disease rather than just restoring dopamine levels. This study will comprehensively review and update the state of the art of what is known about incretin hormones and PD and highlight the strengths and limitations of translating preclinical data to the clinic whenever possible. SYSTEMATIC REVIEW REGISTRATION: PROSPERO registration number CRD42020223435.

Indexed as

Diabetes Mellitus, Type 2Glucagon-Like Peptide 1Glucagon-Like Peptide-1 ReceptorGlucagon-Like Peptide-1 Receptor AgonistsParkinson DiseaseDisease ProgressionDopamineHumansInsulinMeta-Analysis as TopicSystematic Reviews as TopicDopamineGlucagon-Like Peptide 1Glucagon-Like Peptide-1 ReceptorGlucagon-Like Peptide-1 Receptor AgonistsInsulin

Identifiers

PMID34383800
PMCPMC8360366
OpenAlexW3187939351

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.