Evidence map›Paper›PMID 19847468›Full record

ArticleJournal of neurology2010

Serum levels of brain-derived neurotrophic factor correlate with motor impairment in Parkinson's disease.

Paula Scalzo, Arthur Kümmer, Thales Lage Bretas, Francisco Cardoso, Antônio Lúcio Teixeira

Abstract read
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In one paragraph

Article in Journal of neurology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 144 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
144citing papers in PubMed, 5 pooled it
2.3field-weighted citation impact, top 12% 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

144 citing papers in PubMed, 5 syntheses or guidelines pooled it, 289 citations in OpenAlex.

  1. Pooled it
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  6. Trial
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  8. The Effects of FermentedEvidence-based complementary and alternative medicine : eCAM · 2018
    Trial
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  20. Intensive multidisciplinary rehabilitation modulates serumFrontiers in cellular neuroscience · 2026
    Article

84 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

5 authors at 2 institutions in 1 country.

Paula ScalzoLaboratory of Immunopharmacology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil.
Arthur Kümmer
Thales Lage Bretas
Francisco Cardoso
Antônio Lúcio Teixeira
Universidade Federal de Minas Gerais · BRHospital das Clínicas da Universidade Federal de Minas Gerais · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The brain-derived neurotrophic factor (BDNF) is a potent inhibitor of apoptosis-mediated cell death and neurotoxin-induced degeneration of dopaminergic neurons. There is a growing body of evidence implicating BDNF in the pathogenesis of Parkinson's disease (PD), suggesting it may eventually be used in the development of neuroprotective therapies for PD. The serum BDNF of 47 PD patients and of 23 control subjects was assessed, and serum BNDF levels were significantly decreased in PD patients when compared with controls (p = 0.046). Interestingly enough, BDNF correlated positively with a longer time span of the disease, as well as with the severity of the PD symptoms and with more advanced stages of the disease. Additionally, higher BDNF levels also correlated with poor balance as assessed by the Berg Balance Scale, more time spent at the Timed Up & Go Test, reduced speed of gait and shorter distance walked during the Six-Minute Walk Test. Our results corroborate the literature regarding the involvement of BDNF in PD. We hypothesize that lower BDNF levels in early stages of the disease may be associated with pathogenic mechanisms of PD. The increase of BDNF levels with the progression of the disease may be a compensatory mechanism in more advanced stages of PD.

Indexed as

AgedAged, 80 and overBrain-Derived Neurotrophic FactorFemaleHumansMaleMiddle AgedParkinson DiseasePsychiatric Status Rating ScalesRegression AnalysisStatistics as TopicStatistics, NonparametricBrain-Derived Neurotrophic Factor

Identifiers

PMID19847468
OpenAlexW2085227738

What OpenQuestion holds

Textmetadata
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.