Evidence map›Paper›PMID 28878734›Full record

ArticleFrontiers in neurology2017

Speech and Voice Response to a Levodopa Challenge in Late-Stage Parkinson's Disease.

Margherita Fabbri, Isabel Guimarães, Rita Cardoso, Miguel Coelho, Leonor Correia Guedes, Mario M Rosa, Catarina Godinho, Daisy Abreu, Nilza Gonçalves, Angelo Antonini and 1 more

Open access · goldAbstract read
In one paragraph

Article in Frontiers in neurology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 1 pooled it
3.1field-weighted citation impact, top 8% 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

40 citing papers in PubMed, 1 synthesis or guideline pooled it, 74 citations in OpenAlex.

  1. Pooled it
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  4. Effects of STN-DBS treatment on voice characteristics in patients with Parkinson's Disease.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
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  15. Kinect-based objective assessment of the acute levodopa challenge test in parkinsonism: a feasibility study.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2024
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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

11 authors at 5 institutions in 2 countries.

Margherita FabbriFaculty of Medicine, Instituto de Medicina Molecular, University of Lisbon, Lisbon, Portugal.
Isabel GuimarãesFaculty of Medicine, Instituto de Medicina Molecular, University of Lisbon, Lisbon, Portugal.
Rita CardosoFaculty of Medicine, Instituto de Medicina Molecular, University of Lisbon, Lisbon, Portugal.
Miguel CoelhoDepartment of Neurosciences, Hospital Santa Maria, Centro Hospitalar Lisboa Norte, Lisbon, Portugal.
Leonor Correia GuedesDepartment of Neurosciences, Hospital Santa Maria, Centro Hospitalar Lisboa Norte, Lisbon, Portugal.
Mario M RosaFaculty of Medicine, Instituto de Medicina Molecular, University of Lisbon, Lisbon, Portugal.
Catarina GodinhoCenter for Interdisciplinary Research Egas Moniz (CiiEM), Instituto Superior de Ciências da Saúde Egas Moniz, Almada, Portugal.
Daisy AbreuFaculty of Medicine, Instituto de Medicina Molecular, University of Lisbon, Lisbon, Portugal.
Nilza GonçalvesFaculty of Medicine, Instituto de Medicina Molecular, University of Lisbon, Lisbon, Portugal.
Angelo AntoniniParkinson Disease and Movement Disorders Unit, IRCCS San Camillo Hospital Foundation, Venice-Lido, Italy.
Joaquim J FerreiraFaculty of Medicine, Instituto de Medicina Molecular, University of Lisbon, Lisbon, Portugal.
University of Lisbon · PTCentro Hospitalar Lisboa Norte · PTEscola Superior de Saúde do Alcoitão · PTEscola Superior de Saúde Egas Moniz · PTUniversity of Padua · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundParkinson's disease (PD) patients are affected by hypokinetic dysarthria, characterized by hypophonia and dysprosody, which worsens with disease progression. Levodopa's (l-dopa) effect on quality of speech is inconclusive; no data are currently available for late-stage PD (LSPD).

objectiveTo assess the modifications of speech and voice in LSPD following an acute l-dopa challenge.

methodLSPD patients [Schwab and England score <50/Hoehn and Yahr stage >3 (MED ON)] performed several vocal tasks before and after an acute l-dopa challenge. The following was assessed: respiratory support for speech, voice quality, stability and variability, speech rate, and motor performance (MDS-UPDRS-III). All voice samples were recorded and analyzed by a speech and language therapist blinded to patients' therapeutic condition using

results24/27 (14 men) LSPD patients succeeded in performing voice tasks. Median age and disease duration of patients were 79 [IQR: 71.5-81.7] and 14.5 [IQR: 11-15.7] years, respectively. In MED OFF, respiratory breath support and pitch break time of LSPD patients were worse than the normative values of non-parkinsonian. A correlation was found between disease duration and voice quality (

conclusionSpeech is severely affected in LSPD. Although l-dopa had some effect on motor performance, including axial signs, speech and voice did not improve. The applicability and efficacy of non-pharmacological treatment for speech impairment should be considered for speech disorder management in PD.

Indexed as

late stagelevodopaParkinson’s diseasespeechvoice

Identifiers

PMID28878734
PMCPMC5572389
OpenAlexW2748031604

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.