Evidence map›Paper›PMID 29360467›Full record

ReviewBrain research2018

Parkinson's disease from the gut.

Rodger A Liddle

Abstract readReview
In one paragraph

Review in Brain research, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 112 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
112citing papers in PubMed, 1 pooled it
18.7field-weighted citation impact, top 1% 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

112 citing papers in PubMed, 1 synthesis or guideline pooled it, 232 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Article
  5. Review
  6. Review
  7. Review
  8. Review
  9. Review
  10. Review
  11. LRRK2NPJ Parkinson's disease · 2026
    Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. ACS pharmacology & translational science · 2025
    Review
  17. Article
  18. Article
  19. Review
  20. Review

52 more citing papers are in PubMed but not listed here.

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

1 author at 1 institution in 1 country.

Rodger A LiddleDepartment of Medicine, Duke University Medical Center and Department of Veterans Affairs Health Care System, Durham, NC 27710, United States. Electronic address: rodger.liddle@duke.edu.
Duke University Hospital · US

Funding

The role of gut endocrine cells in Parkinson's DiseaseR01DK109368 · NIDDK · DUKE UNIVERSITY · PI LIDDLE, RODGER A. · 2016 to 2019
$1.4M
Receptor Regulation of CCK Cell FunctionR01DK098796 · NIDDK · DUKE UNIVERSITY · PI LIDDLE, RODGER A. · 2013 to 2016
$1.4M
Gut Neuroendocrine Cell Signaling and ObesityI01BX002230 · VA · DURHAM VA MEDICAL CENTER · PI LIDDLE, RODGER A. · 2014 to 2022
–
BLRD VA I01 BX002230NIDDK NIH HHS R01 DK098796NIDDK NIH HHS R01 DK109368
6 · The paper itself

Abstract

Parkinson's disease (PD) is a debilitating neurodegenerative condition associated with tremor, rigidity, dementia, and gastrointestinal symptoms such as constipation, nausea and vomiting. The pathological hallmarks of PD are Lewy bodies and neurites in the brain and peripheral nerves. The major constituent of Lewy bodies is the neuronal protein α-synuclein. Misfolding of α-synuclein confers prion-like properties enabling its spread from cell to cell. Misfolded α-synuclein also serves as a template and induces misfolding of endogenous α-synuclein in recipient cells leading to the formation of oligomers that progress to fibrils and eventually Lewy bodies. Accumulating evidence suggests that PD may arise in the gut. Clinically, gastrointestinal symptoms often appear in patients before other neurological signs and aggregates of α-synuclein have been found in enteric nerves of PD patients. Importantly, patients undergoing vagotomy have a reduced risk of developing PD. Experimentally, abnormal forms of α-synuclein appear in enteric nerves before they appear in the brain and injection of abnormal α-synuclein into the wall of the intestine spreads to the vagus nerve. Ingested toxins and alterations in gut microbiota can induce α-synuclein aggregation and PD, however, it is not known how PD starts. Recently, it has been shown that sensory cells of the gut known as enteroendocrine cells (EECs) contain α-synuclein and synapse with enteric nerves, thus providing a connection from the gut to the brain. It is possible that abnormal α-synuclein first develops in EECs and spreads to the nervous system.

Indexed as

Parkinson Diseasealpha-SynucleinAnimalsEnteroendocrine CellsGastrointestinal TractHumansLewy BodiesNeuronsPrionsProteostasis Deficienciesalpha-SynucleinPrionsAlpha-synucleinEnteroendocrine cellGastrointestinal tractLewy bodyParkinson’s diseasePrion

Identifiers

PMID29360467
PMCPMC6003841
OpenAlexW2790568799

What OpenQuestion holds

Textmetadata
LicenceTDM
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.