Evidence map›Paper›PMID 35418117›Full record

ArticleNPJ Parkinson's disease2022

Self-reported periodontitis and C-reactive protein in Parkinson's disease: a cross-sectional study of two American cohorts.

Patrícia Lyra, João Botelho, Vanessa Machado, Silvia Rota, Ryan Walker, Juliet Staunton, Luís Proença, Kallol Ray Chaudhuri, José João Mendes

Open access · goldAbstract read
In one paragraph

Article in NPJ Parkinson's disease, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
3.3field-weighted citation impact, top 7% 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, 1 synthesis or guideline pooled it, 22 citations in OpenAlex.

  1. Pooled it
  2. Parkinson's disease and Porphyromonas gingivalis levels: a case-control study.Journal of applied oral science : revista FOB · 2026
    Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Potential correlation between chronic periodontitis and Parkinson's disease.Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology · 2024
    Article
  9. Article
  10. Article
  11. Revisiting Alpha-Synuclein Pathways to Inflammation.International journal of molecular sciences · 2023
    Review
  12. Article
  13. Review
  14. 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

9 authors at 4 institutions in 2 countries.

Patrícia LyraClinical Research Unit (CRU), Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz-Cooperativa de Ensino Superior, Almada, Portugal. patricialyra10@gmail.com.ORCID http://orcid.org/0000-0001-6804-9124
João BotelhoClinical Research Unit (CRU), Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz-Cooperativa de Ensino Superior, Almada, Portugal.
Vanessa MachadoClinical Research Unit (CRU), Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz-Cooperativa de Ensino Superior, Almada, Portugal.
Silvia RotaKing's College London, Department of Basic & Clinical Neuroscience, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK.ORCID http://orcid.org/0000-0001-8281-9797
Ryan WalkerKing's College Hospital NHS Foundation Trust, London, UK.
Juliet StauntonKing's College Hospital NHS Foundation Trust, London, UK.
Luís ProençaEvidence-Based Hub, CRU, CiiEM, Egas Moniz-Cooperativa de Ensino Superior, Almada, Portugal.ORCID http://orcid.org/0000-0002-8482-5936
Kallol Ray ChaudhuriKing's College London, Department of Basic & Clinical Neuroscience, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK.
José João MendesClinical Research Unit (CRU), Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Egas Moniz-Cooperativa de Ensino Superior, Almada, Portugal.
Escola Superior de Saúde Egas Moniz · PTKing's College Hospital NHS Foundation Trust · GBKing's College London · GBA4F-Algafuel (Portugal) · PT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Periodontitis triggers systemic repercussions, such as elevated levels of high-sensitive C-reactive protein (hs-CRP). This has never been studied within Parkinson's Disease (PD). The aim of this study is to compare hs-CRP levels of self-reported periodontitis cases versus cases without periodontitis in PD patients. Data from the National Health and Nutrition Examination Survey (2015-2016 and 2017-2018 waves) were analyzed. PD cases were identified through medication regimens and periodontitis cases through a validated self-report questionnaire. 51 participants were included (24 females, 27 males, with mean age of 62.96 (14.71)). While the self-reported periodontitis group presented elevated levels of circulating hs-CRP (5.36 vs. 1.99 mg/L, p = 0.031), the self-reported without periodontitis group presented higher lymphocyte levels (29.35 vs. 28.03%, p = 0.007). Blood levels of hs-CRP were significantly higher in PD cases with self-reported periodontitis. Apart from the lymphocyte levels, there were no other significant differences according to the self-reported periodontal status. Future studies shall explore this association using clinical measures.

Identifiers

PMID35418117
PMCPMC9008053
OpenAlexW4223586303

What OpenQuestion holds

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LicenceCC BY
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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.