Evidence map›Paper›PMID 32729012›Full record

ArticleNeurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology2021

Frontal lobe metabolic alterations characterizing Parkinson's disease cognitive impairment.

Shefali Chaudhary, S Senthil Kumaran, Vinay Goyal, M Kalaivani, Gauri Shanker Kaloiya, Rajesh Sagar, Nalin Mehta, Achal Kumar Srivastava, N R Jagannathan

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Article in Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 10% 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.

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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

9 authors at 1 institution in 1 country.

Shefali ChaudharyDepartment of NMR & MRI Facility, All India Institute of Medical Sciences, New Delhi, 110029, India.
S Senthil KumaranDepartment of NMR & MRI Facility, All India Institute of Medical Sciences, New Delhi, 110029, India. senthil@aiims.edu.ORCID http://orcid.org/0000-0002-4275-0139
Vinay GoyalDepartment of Neurology, All India Institute of Medical Sciences, New Delhi, 110029, India.
M KalaivaniDepartment of Biostatistics, All India Institute of Medical Sciences, New Delhi, 110029, India.
Gauri Shanker KaloiyaNational Drug Dependence Treatment Centre, All India Institute of Medical Sciences, New Delhi, 110029, India.
Rajesh SagarDepartment of Psychiatry, All India Institute of Medical Sciences, New Delhi, 110029, India.
Nalin MehtaDepartment of Physiology, All India Institute of Medical Sciences, New Delhi, 110029, India.
Achal Kumar SrivastavaDepartment of Neurology, All India Institute of Medical Sciences, New Delhi, 110029, India.
N R JagannathanDepartment of NMR & MRI Facility, All India Institute of Medical Sciences, New Delhi, 110029, India.
All India Institute of Medical Sciences · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeDiagnosis of Parkinson's disease (PD) cognitive impairment at early stages is challenging compared to the stage of PD dementia where functional impairment is apparent and easily diagnosed. Hence, to evaluate potential early stage cognitive biomarkers, we assessed frontal lobe metabolic alterations using in vivo multi-voxel proton magnetic resonance spectroscopic imaging (

methodFrontal metabolism was studied in patients with PD with normal cognition (PD-CN) (n = 26), with cognitive impairment (PD-CI) (n = 27), and healthy controls (HC) (n = 30) using a single slice (two-dimensional)

resultSignificant (post hoc p < 0.016) reduction in the concentration of N-acetyl aspartate (NAA) in the middle and superior frontal GMs and total choline (tCho) and total creatine (tCr) in the frontal WM was observed in PD-CI compared to PD-CN and HC, while that in HC and PD-CN groups were comparable. The NAA and tCr/tCho metabolite concentrations showed significant (p < 0.05) positive correlations with cognitive test scores in the frontal GM and WM, respectively. The receiver operating curve (ROC) analysis revealed significant (p < 0.05) "area under curve" for NAA/tNAA in the frontal GM and tCho in the frontal WM.

conclusionThe frontal metabolic profile is altered in cognitively impaired PD compared with cognitively normal PD. Neuronal function loss (NAA), altered energy metabolism (Cr), and cholinergic (Cho) neural transmission are implicated in PD cognitive pathology. Frontal neuro-metabolism may promisingly serve as PD cognitive biomarker.

Indexed as

Cognitive DysfunctionParkinson DiseaseAspartic AcidBrainCreatineFrontal LobeGray MatterHumansMagnetic Resonance ImagingAspartic AcidCreatineCognitionCognitive biomarkersFrontal lobeParkinson’s diseaseProton magnetic resonance spectroscopy

Identifiers

PMID32729012
OpenAlexW3045719187

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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.