Evidence map›Paper›PMID 40659646›Full record

ArticleNPJ Parkinson's disease2025

Fasting and postprandial Ghrelin levels in Parkinson's disease: a systematic review and meta-analysis.

Henrique José Cavalcanti Bezerra Gouveia, Osmar Henrique Dos Santos-Júnior, Johannes Frasnelli

Abstract read
In one paragraph

Article in NPJ Parkinson's disease, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

1 citing paper in PubMed.

  1. Beyond Hunger: The Structure, Signaling, and Systemic Roles of Ghrelin.International journal of molecular sciences · 2025
    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

3 authors.

Henrique José Cavalcanti Bezerra GouveiaStudies in Nutrition and Phenotypic Plasticity Unit, Center for Health Sciences, Federal University of Pernambuco, Recife-Pernambuco, Brazil.
Osmar Henrique Dos Santos-JúniorStudies in Nutrition and Phenotypic Plasticity Unit, Center for Health Sciences, Federal University of Pernambuco, Recife-Pernambuco, Brazil.
Johannes FrasnelliDepartment of Anatomy, Université du Québec à Trois-Rivières, Trois-Rivières, QC, Canada. johannes.frasnelli@uqtr.ca.

Funding

CIHR AFF_173514Coordenação de Aperfeiçoamento de Pessoal de Nível Superior 001Fonds de Recherche du Québec - Santé 352197Fundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco BFP-0342-4.05/24Natural Sciences and Engineering Research Council of Canada RGPIN-2022-04813
6 · The paper itself

Abstract

Parkinson's disease (PD) is a progressive movement disorder with motor and non-motor symptoms, including gastrointestinal and olfactory dysfunctions. These symptoms may be associated with plasma concentrations of the hormone ghrelin. Lower fasting and postprandial plasma levels of total and active ghrelin were reported in PD, despite heterogeneous findings. In this meta-analysis, we assessed the magnitude of ghrelin dysregulation in PD and explored associated factors. We included quasi-experimental and observational studies assessing fasting and postprandial plasma concentrations of total and/or active ghrelin in individuals with PD and controls (eight studies; 985 subjects). Compared to controls, fasting individuals with PD exhibited a significant reduction in total and active ghrelin concentrations. PD also showed significantly reduced postprandial concentrations of total and active ghrelin. This meta-analysis suggests that ghrelin may be crucially involved in the dysfunctions often observed in PD. Further studies should explore factors such as sex, drug therapy, and disease stages.

Identifiers

PMID40659646
PMCPMC12259941

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Registered trials

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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.