Evidence map›Paper›PMID 31660902›Full record

ArticleBMC neurology2019

Dynamic interaction of genetic risk factors and cocaine abuse in the background of Parkinsonism - a case report.

Anett Illés, Péter Balicza, Viktor Molnár, Renáta Bencsik, István Szilvási, Maria Judit Molnar

Open access · goldAbstract readCase Reports
In one paragraph

Article in BMC neurology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.5field-weighted citation impact, top 33% 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

6 citing papers in PubMed, 11 citations in OpenAlex.

  1. Article
  2. Chronic Cocaine Use and Parkinson's Disease: An Interpretative Model.International journal of environmental research and public health · 2024
    Article
  3. Review
  4. Review
  5. Psychomotor Symptoms in Chronic Cocaine Users: An Interpretative Model.International journal of environmental research and public health · 2022
    Article
  6. 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

6 authors at 2 institutions in 1 country.

Anett IllésInstitute of Genomic Medicine and Rare Disorders, Semmelweis University, Budapest, Hungary.
Péter BaliczaInstitute of Genomic Medicine and Rare Disorders, Semmelweis University, Budapest, Hungary.
Viktor MolnárInstitute of Genomic Medicine and Rare Disorders, Semmelweis University, Budapest, Hungary.
Renáta BencsikInstitute of Genomic Medicine and Rare Disorders, Semmelweis University, Budapest, Hungary.
István SzilvásiDepartment of Nuclear Medicine, Hungarian Defence Force Medical Center, Budapest, Hungary.
Maria Judit MolnarInstitute of Genomic Medicine and Rare Disorders, Semmelweis University, Budapest, Hungary. molnar.mariajudit@med.semmelweis-univ.hu.ORCID http://orcid.org/0000-0001-9350-1864
Semmelweis University · HUZrínyi Miklós National Defence University · HU

Funding

Nemzeti Kutatási és Technológiai Hivatal KTIA_NAP_ 2017-1.2.1-NKP-2017-00002Semmelweis Egyetem EFOP-3.6.3-VEKOP-16-2017-00009
6 · The paper itself

Abstract

backgroundParkinsonism is a complex multifactorial neurodegenerative disorder, in which genetic and environmental risk factors may both play a role. Among environmental risk factors cocaine was earlier ambiguously linked to Parkinsonism. Former single case reports described Parkinsonism in chronic cocaine users, but an epidemiological study did not confirm an increased risk of Parkinson's disease. Here we report a patient, who developed Parkinsonism in young age after chronic cocaine use, in whom a homozygous LRRK2 risk variant was also detected. CASE PRESENTATION: The patient was investigated because of hand tremor, which started after a 1.5-year period of cocaine abuse. Neurological examination suggested Parkinsonism, and asymmetrical pathology was confirmed by the dopamine transporter imaging study. The genetic investigations revealed a homozygous risk allele in the LRRK2 gene. After a period of cocaine abstinence, the patient's symptoms spontaneously regressed, and the dopamine transporter imaging also returned to near-normal.

conclusionsThis case report suggests that cocaine abuse indeed might be linked to secondary Parkinsonism and serves as an example of a potential gene-environmental interaction between the detected LRRK2 risk variant and cocaine abuse. The reversible nature of the DaTscan pathology is a unique feature of this case, and needs further evaluation, whether this is incidental or can be a feature of cocaine related Parkinsonism.

Indexed as

Gene-Environment InteractionAdultBrainCocaine-Related DisordersDopamine Plasma Membrane Transport ProteinsHumansLeucine-Rich Repeat Serine-Threonine Protein Kinase-2MaleNeuroimagingParkinson DiseaseRisk FactorsSingle Photon Emission Computed Tomography Computed TomographyDopamine Plasma Membrane Transport ProteinsLeucine-Rich Repeat Serine-Threonine Protein Kinase-2LRRK2 protein, humancocaineGenetic risk factorLRRK2ParkinsonismParkinson’s disease

Identifiers

PMID31660902
PMCPMC6816197
OpenAlexW2982507343

What OpenQuestion holds

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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.