Evidence map›Paper›PMID 34841903›Full record

ArticleClinical EEG and neuroscience2023

Olfactory Function and Diffusion Tensor Imaging as Markers of Mild Cognitive Impairment in Early Stages of Parkinson's Disease.

Sophie A Stewart, Laura Pimer, John D Fisk, Benjamin Rusak, Ron A Leslie, Gail Eskes, Kerrie Schoffer, J Roger McKelvey, Tyler Rolheiser, M Naeem Khan and 2 more

Open access · hybridAbstract read
In one paragraph

Article in Clinical EEG and neuroscience, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.2field-weighted citation impact, top 25% 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

11 citing papers in PubMed, 15 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Review
  9. Review
  10. Review
  11. 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

12 authors at 3 institutions in 1 country.

Sophie A Stewart3688Dalhousie University, Halifax, NS, Canada.
Laura Pimer3688Dalhousie University, Halifax, NS, Canada.
John D Fisk432234Nova Scotia Health, Halifax, NS, Canada.
Benjamin Rusak3688Dalhousie University, Halifax, NS, Canada.
Ron A Leslie3688Dalhousie University, Halifax, NS, Canada.
Gail Eskes3688Dalhousie University, Halifax, NS, Canada.
Kerrie Schoffer3688Dalhousie University, Halifax, NS, Canada.
J Roger McKelvey3688Dalhousie University, Halifax, NS, Canada.
Tyler Rolheiser3688Dalhousie University, Halifax, NS, Canada.
M Naeem Khan3682IWK Hospital, Halifax, NS, Canada.
Harold Robertson3688Dalhousie University, Halifax, NS, Canada.
Kimberley P Good3688Dalhousie University, Halifax, NS, Canada.ORCID 0000-0003-2129-2375
Dalhousie University · CAIzaak Walton Killam Health Centre · CANova Scotia Health Authority · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Parkinson's disease (PD) is a neurodegenerative disorder that is typified by motor signs and symptoms but can also lead to significant cognitive impairment and dementia Parkinson's Disease Dementia (PDD). While dementia is considered a nonmotor feature of PD that typically occurs later, individuals with PD may experience mild cognitive impairment (PD-MCI) earlier in the disease course. Olfactory deficit (OD) is considered another nonmotor symptom of PD and often presents even before the motor signs and diagnosis of PD. We examined potential links among cognitive impairment, olfactory functioning, and white matter integrity of olfactory brain regions in persons with early-stage PD. Cognitive tests were used to establish groups with PD-MCI and with normal cognition (PD-NC). Olfactory functioning was examined using the University of Pennsylvania Smell Identification Test (UPSIT) while the white matter integrity of the anterior olfactory structures (AOS) was examined using magnetic resonance imaging (MRI) diffusion tensor imaging (DTI) analysis. Those with PD-MCI demonstrated poorer olfactory functioning and abnormalities based on all DTI parameters in the AOS, relative to PD-NC individuals. OD and microstructural changes in the AOS of individuals with PD may serve as additional biological markers of PD-MCI.

Indexed as

Cognitive DysfunctionDementiaParkinson DiseaseBiomarkersDiffusion Tensor ImagingElectroencephalographyHumansBiomarkersdiffusion tensor imagingmild cognitive impairmentolfactionParkinson's disease

Identifiers

PMID34841903
PMCPMC9693894
OpenAlexW3217731090

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.