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Khanna RK, Catanese S, Mortemousque G, Dupuy C, Lefevre A, Emond P, Beltran S, Gissot V, Pisella PJ, Blasco H, Corcia P. Metabolomics of basal tears in amyotrophic lateral sclerosis: a cross-sectional study. Ocul Surf 2024; 34:S1542-0124(24)00101-0. [PMID: 39349171 DOI: 10.1016/j.jtos.2024.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2024] [Revised: 08/30/2024] [Accepted: 09/23/2024] [Indexed: 10/02/2024]
Abstract
PURPOSE Amyotrophic lateral sclerosis (ALS) clinical variability, along with the lack of conclusive diagnostic instruments, result in average diagnosis delays of 9 months. This study aimed to assess whether metabolomic profiling of basal tears in ALS patients could act as a biological marker for diagnosing ALS, predicting prognosis, and discriminating between endophenotypes. METHODS A single-center prospective case-control study was conducted in France from September 2021 to March 2023 including patients with ALS according to the revised EI Escorial criteria. Two microliters of basal tears were collected using microcapillary glass tubes and analyzed with ultra-high performance liquid chromatography coupled with mass spectrometry. Both univariate and multivariate analyses were performed. RESULTS Twenty-five patients with ALS and 30 controls were included. No significant differences in metabolite levels were found between ALS and control groups (p>0.05). The basal tear metabolome significantly discriminated bulbar and spinal forms of ALS based on 6 metabolites, among which 5 were decreased (aniline, trigonelline, caffeine, theophylline and methyl beta-D-galactoside) in the bulbar form and 1 was decreased in the spinal form (dodecanedioic acid). CONCLUSION This study represents the first prospective analysis of basal tear metabolomics in individuals with ALS. Despite the inability to distinguish between ALS patients and controls based on metabolic signatures, these findings could contribute to understanding the phenotypic diversity of ALS. Notably, distinct metabolic profiles were identified that differentiate between the bulbar and spinal forms of the disease.
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Affiliation(s)
- Raoul K Khanna
- Department of Ophthalmology, Bretonneau University Hospital of Tours, France; Université de Tours, INSERM, Imaging Brain & Neuropsychiatry iBraiN U1253, 37032, Tours, France.
| | - Sophie Catanese
- Department of Ophthalmology, Bretonneau University Hospital of Tours, France; Université de Tours, INSERM, Imaging Brain & Neuropsychiatry iBraiN U1253, 37032, Tours, France
| | - Geoffroy Mortemousque
- Department of Ophthalmology, Bretonneau University Hospital of Tours, France; Université de Tours, INSERM, Imaging Brain & Neuropsychiatry iBraiN U1253, 37032, Tours, France
| | - Camille Dupuy
- Université de Tours, INSERM, Imaging Brain & Neuropsychiatry iBraiN U1253, 37032, Tours, France
| | - Antoine Lefevre
- Université de Tours, INSERM, Imaging Brain & Neuropsychiatry iBraiN U1253, 37032, Tours, France
| | - Patrick Emond
- Université de Tours, INSERM, Imaging Brain & Neuropsychiatry iBraiN U1253, 37032, Tours, France; CHRU Tours, Nuclear medicine in vitro department, Tours, France
| | - Stéphane Beltran
- Amyotrophic lateral sclerosis Centre, Department of Neurology, Bretonneau University Hospital of Tours, France
| | | | - Pierre-Jean Pisella
- Department of Ophthalmology, Bretonneau University Hospital of Tours, France
| | - Hélène Blasco
- Université de Tours, INSERM, Imaging Brain & Neuropsychiatry iBraiN U1253, 37032, Tours, France; Biochemistry and molecular biology department, Bretonneau University Hospital of Tours, France
| | - Philippe Corcia
- Université de Tours, INSERM, Imaging Brain & Neuropsychiatry iBraiN U1253, 37032, Tours, France; Amyotrophic lateral sclerosis Centre, Department of Neurology, Bretonneau University Hospital of Tours, France
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K Khanna R, Catanese S, Mortemousque G, Mureau N, Emond P, Pisella PJ, Blasco H, Corcia P. Exploring amyotrophic lateral sclerosis through the visual system: A systematic review. Eur J Neurol 2024:e16475. [PMID: 39302063 DOI: 10.1111/ene.16475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 07/27/2024] [Accepted: 08/28/2024] [Indexed: 09/22/2024]
Abstract
BACKGROUND AND PURPOSE The human visual system relies on neural networks throughout the brain that are easily accessible for tests exploring eye structures and movements. Over the past two decades, investigations have been carried out on both afferent and efferent components of the visual system in people with amyotrophic lateral sclerosis (ALS). This approach might represent an innovative biomarker research strategy to better characterise the phenotypic variability of ALS. The purpose of this review was to determine whether exploring the visual system of patients with ALS (pwALS) is an effective strategy. METHODS The Medline and Web of science databases were searched for studies with terms relating to ALS and vision. Of 1146 references identified, 43 articles were included. RESULTS In this review article, both afferent and efferent components of the visual system were found to be impaired in pwALS in the absence of visual complaint, thereby contributing to the hypothesis that ALS is a multisystem disease with sensory involvement. Of note, some areas of the eye remain unexplored (i.e., tears, and retinal function using electroretinography). CONCLUSIONS According to the findings available in the literature, investigating the oculomotor system and exploring the ocular surface could represent two key promising strategies to identify new diagnostic biomarkers in pwALS. Further longitudinal studies are needed to identify relevant indicators of disease progression and response to therapeutic intervention.
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Affiliation(s)
- Raoul K Khanna
- Department of Ophthalmology, Bretonneau University Hospital of Tours, Tours, France
- INSERM, Imaging Brain & Neuropsychiatry iBraiN U1253, Université de Tours, Tours, France
| | - Sophie Catanese
- Department of Ophthalmology, Bretonneau University Hospital of Tours, Tours, France
- INSERM, Imaging Brain & Neuropsychiatry iBraiN U1253, Université de Tours, Tours, France
| | | | - Nicolas Mureau
- Department of Nuclear Medicine In Vitro, University Hospital of Tours, Tours, France
- Department of Biochemistry and Molecular Biology, University Hospital of Tours, Tours, France
| | - Patrick Emond
- INSERM, Imaging Brain & Neuropsychiatry iBraiN U1253, Université de Tours, Tours, France
- Department of Nuclear Medicine In Vitro, University Hospital of Tours, Tours, France
| | - Pierre-Jean Pisella
- Department of Ophthalmology, Bretonneau University Hospital of Tours, Tours, France
| | - Hélène Blasco
- INSERM, Imaging Brain & Neuropsychiatry iBraiN U1253, Université de Tours, Tours, France
- Department of Biochemistry and Molecular Biology, University Hospital of Tours, Tours, France
| | - Philippe Corcia
- INSERM, Imaging Brain & Neuropsychiatry iBraiN U1253, Université de Tours, Tours, France
- Department of Neurology, Amyotrophic Lateral Sclerosis Centre, University Hospital of Tours, Tours, France
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Ștefănescu E, Balea M, Chelaru VF, Jemna N, Verișezan Roșu O, Truță A, Stan AD, Chira D, Strilciuc Ș, Mureșanu D. Memory-Guided Saccades in Subacute and Chronic Stroke: Secondary Data Analysis of the N-PEP-12 Clinical Study. Biomedicines 2024; 12:1678. [PMID: 39200143 PMCID: PMC11351517 DOI: 10.3390/biomedicines12081678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2024] [Revised: 07/17/2024] [Accepted: 07/25/2024] [Indexed: 09/01/2024] Open
Abstract
BACKGROUND Ischemic stroke (IS) often leads to cognitive and motor impairments. This study aimed to investigate whether Memory-Guided Saccade Tasks (MGSTs) could be used to assess cognitive function in stroke patients. METHODS A secondary data analysis was conducted on 62 individuals with supratentorial IS. Eye-tracking metrics from MGST were correlated with established neuropsychological assessments, including the Montreal Cognitive Assessment (MoCA) and Hospital Anxiety and Depression Scale (HADS). RESULTS Age correlated negatively with memory-guided saccade (MGS) accuracy (ρ = -0.274) and positively with late errors (ρ = 0.327). Higher Montreal Cognitive Assessment (MoCA) scores were associated with faster corrective saccades (ρ = 0.259). Increased anxiety (HADS-A) and depression (HADS-D) levels correlated with higher early error rates (ρ = 0.325 and ρ = 0.311, respectively). The Color Trails Test and Digit Span test performance also correlated with various MGS parameters. CONCLUSIONS While some correlations were found between cognitive measures and eye-tracking metrics, further research is needed to validate MGST as a tool for cognitive assessment in a more homogenous stroke population.
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Affiliation(s)
- Emanuel Ștefănescu
- Department of Neuroscience, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania; (E.Ș.); (D.M.)
- RoNeuro Institute for Neurological Research and Diagnostic, 400364 Cluj-Napoca, Romania
| | - Maria Balea
- RoNeuro Institute for Neurological Research and Diagnostic, 400364 Cluj-Napoca, Romania
| | - Vlad-Florin Chelaru
- Department of Neuroscience, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania; (E.Ș.); (D.M.)
- RoNeuro Institute for Neurological Research and Diagnostic, 400364 Cluj-Napoca, Romania
| | - Nicoleta Jemna
- Department of Neuroscience, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania; (E.Ș.); (D.M.)
- RoNeuro Institute for Neurological Research and Diagnostic, 400364 Cluj-Napoca, Romania
| | - Olivia Verișezan Roșu
- Department of Neuroscience, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania; (E.Ș.); (D.M.)
- RoNeuro Institute for Neurological Research and Diagnostic, 400364 Cluj-Napoca, Romania
| | - Anamaria Truță
- Research Center for Functional Genomics, Biomedicine, and Translational Medicine, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania
| | - Adina Dora Stan
- Department of Neuroscience, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania; (E.Ș.); (D.M.)
- RoNeuro Institute for Neurological Research and Diagnostic, 400364 Cluj-Napoca, Romania
| | - Diana Chira
- Department of Neuroscience, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania; (E.Ș.); (D.M.)
- RoNeuro Institute for Neurological Research and Diagnostic, 400364 Cluj-Napoca, Romania
| | - Ștefan Strilciuc
- RoNeuro Institute for Neurological Research and Diagnostic, 400364 Cluj-Napoca, Romania
- Research Center for Functional Genomics, Biomedicine, and Translational Medicine, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania
| | - Dafin Mureșanu
- Department of Neuroscience, Iuliu Hațieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania; (E.Ș.); (D.M.)
- RoNeuro Institute for Neurological Research and Diagnostic, 400364 Cluj-Napoca, Romania
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Readman MR, Polden M, Gibbs MC, Donohue A, Chhetri SK, Crawford TJ. Oculomotor atypicalities in motor neurone disease: a systematic review. Front Neurosci 2024; 18:1399923. [PMID: 38988765 PMCID: PMC11233471 DOI: 10.3389/fnins.2024.1399923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Accepted: 06/13/2024] [Indexed: 07/12/2024] Open
Abstract
Introduction Cognitive dysfunction is commonplace in Motor Neurone Disease (MND). However, due to the prominent motor symptoms in MND, assessing patients' cognitive function through traditional cognitive assessments, which oftentimes require motoric responses, may become increasingly challenging as the disease progresses. Oculomotor pathways are apparently resistant to pathological degeneration in MND. As such, abnormalities in oculomotor functions, largely driven by cognitive processes such as saccades and smooth pursuit eye movement, may be reflective of frontotemporal cognitive deficits in MND. Thus, saccadic and smooth pursuit eye movements may prove to be ideal mechanistic markers of cognitive function in MND. Methods To ascertain the utility of saccadic and smooth pursuit eye movements as markers of cognitive function in MND, this review summarizes the literature concerning saccadic and smooth pursuit eye movement task performance in people with MND. Results and discussion Of the 22 studies identified, noticeable patterns suggest that people with MND can be differentiated from controls based on antisaccade and smooth pursuit task performance, and thus the antisaccade task and smooth pursuit task may be potential candidates for markers of cognition in MND. However, further studies which ascertain the concordance between eye tracking measures and traditional measures of cognition are required before this assumption is extrapolated, and clinical recommendations are made. Systematic review registration https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=376620, identifier CRD42023376620.
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Affiliation(s)
- Megan Rose Readman
- Department of Psychology, Lancaster University, Lancaster, United Kingdom
- Department of Primary Care and Mental Health, The University of Liverpool, Liverpool, United Kingdom
- National Institute of Health Research Applied Research Collaboration North West Coast, Liverpool, United Kingdom
| | - Megan Polden
- Department of Primary Care and Mental Health, The University of Liverpool, Liverpool, United Kingdom
- National Institute of Health Research Applied Research Collaboration North West Coast, Liverpool, United Kingdom
- Division of Health Research, Lancaster University, Lancaster, United Kingdom
| | - Melissa C Gibbs
- Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, Oxford, United Kingdom
| | - Aisling Donohue
- School of Psychology, Faculty of Health, Liverpool John Moores University, Liverpool, United Kingdom
| | - Suresh K Chhetri
- Lancashire and South Cumbria Motor Neurone Disease Care and Research Centre, Neurology Department, Lancashire Teaching Hospitals NHS Foundation Trust, Royal Preston Hospital, Preston, United Kingdom
| | - Trevor J Crawford
- Department of Psychology, Lancaster University, Lancaster, United Kingdom
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Khanna RK, Catanese S, Blasco H, Pisella PJ, Corcia P. Corneal nerves and amyotrophic lateral sclerosis: an in vivo corneal confocal imaging study. J Neurol 2024; 271:3370-3377. [PMID: 38498118 DOI: 10.1007/s00415-024-12282-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 02/25/2024] [Accepted: 02/26/2024] [Indexed: 03/20/2024]
Abstract
OBJECTIVES Amyotrophic lateral sclerosis (ALS) is a severe motor neuron disorder. Diagnosis is challenging due to its clinical heterogeneity and the absence of definitive diagnostic tools, leading to delays averaging between 9.1 and 27 months. In vivo corneal confocal microscopy, assessing the sub-basal nerve plexus of the cornea, has been proposed as a potential biomarker for ALS. We aimed to determine whether the assessment of corneal nerves using in vivo confocal microscopy can serve as an imaging biomarker for ALS. METHODS A single-centre prospective case-control study was conducted in France from September 2021 to March 2023 including patients with ALS according to the revised EI Escorial criteria. The corneal sub-basal nerve plexus was analysed using in vivo confocal microscopy. An automated algorithm (ACCMetrics) was used to evaluate corneal parameters: nerve fibre density, nerve branch density, nerve fibre length, nerve fibre area, nerve total branch density, nerve fibre width, and nerve fractal dimension. RESULTS Twenty-two patients with ALS and 30 controls were included. No significant differences were found between ALS and control groups for all corneal parameters (p > 0.05). Corneal sensitivity did not differ between groups, and no correlation was identified between corneal nerve parameters and ALS disease duration, severity and rate of progression (p > 0.05). CONCLUSIONS The present study does not support the use of in vivo corneal confocal microscopy as an early diagnostic or prognostic tool for ALS. Further research, especially longitudinal investigations, is needed to understand any potential corneal innervation changes as ALS progresses.
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Affiliation(s)
- Raoul K Khanna
- Department of Ophthalmology, Bretonneau University Hospital of Tours, 2 Boulevard Tonnellé, 37000, Tours, France.
- Université de Tours, INSERM, Imaging Brain & Neuropsychiatry iBraiN U1253, 37032, Tours, France.
| | - Sophie Catanese
- Department of Ophthalmology, Bretonneau University Hospital of Tours, 2 Boulevard Tonnellé, 37000, Tours, France
- Université de Tours, INSERM, Imaging Brain & Neuropsychiatry iBraiN U1253, 37032, Tours, France
| | - Hélène Blasco
- Université de Tours, INSERM, Imaging Brain & Neuropsychiatry iBraiN U1253, 37032, Tours, France
- Biochemistry and Molecular Biology Department, Bretonneau University Hospital of Tours, Tours, France
| | - Pierre-Jean Pisella
- Department of Ophthalmology, Bretonneau University Hospital of Tours, 2 Boulevard Tonnellé, 37000, Tours, France
| | - Philippe Corcia
- Université de Tours, INSERM, Imaging Brain & Neuropsychiatry iBraiN U1253, 37032, Tours, France
- Amyotrophic Lateral Sclerosis Centre, Department of Neurology, Bretonneau University Hospital of Tours, Tours, France
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Leng Q, Deng B, Ju Y. Application and progress of advanced eye movement examinations in cognitive impairment. Front Aging Neurosci 2024; 16:1377406. [PMID: 38694260 PMCID: PMC11061382 DOI: 10.3389/fnagi.2024.1377406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Accepted: 04/04/2024] [Indexed: 05/04/2024] Open
Abstract
The worldwide incidence of cognitive impairment is escalating, yet no effective solutions for these afflictions have been discovered. Consequently, the importance of early identification and immediate intervention is heightened. Advanced eye movements-a form of voluntary eye movements that includes anti-saccades, memory-guided saccades, predictive saccades, pro-saccades and gap/overlap saccades, mediated by the cerebral cortex and subcortical pathways reflect cognitive levels and functions across different domains. In view of their objectivity, reproducibility, and non-invasive characteristics, advanced eye movement examination possesses significant prospective utility across a wide range of cognitive impairment. This paper extensively reviews various models associated with advanced eye movement examinations and their current applications in cognitive impairment such as Alzheimer's disease, Lewy body dementia and frontotemporal dementia. Advanced eye movement examination can serve as a biomarker for early screening diagnosis and research on cognitive impairment. In the future, combining advanced eye movement examination with neuropsychological scale assessment and other diagnostic methods may contribute to further early identification of these types of diseases.
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Affiliation(s)
- Qi Leng
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Bo Deng
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Yi Ju
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
- Clinical Center for Vertigo and Balance Disturbance, China National Clinical Research Center for Neurological Diseases, Beijing, China
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Shi J, Wang Z, Yi M, Xie S, Zhang X, Tao D, Liu Y, Yang Y. Evidence based on Mendelian randomization and colocalization analysis strengthens causal relationships between structural changes in specific brain regions and risk of amyotrophic lateral sclerosis. Front Neurosci 2024; 18:1333782. [PMID: 38505770 PMCID: PMC10948422 DOI: 10.3389/fnins.2024.1333782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 02/22/2024] [Indexed: 03/21/2024] Open
Abstract
Background Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease characterized by the degeneration of motor neurons in the brain and spinal cord with a poor prognosis. Previous studies have observed cognitive decline and changes in brain morphometry in ALS patients. However, it remains unclear whether the brain structural alterations contribute to the risk of ALS. In this study, we conducted a bidirectional two-sample Mendelian randomization (MR) and colocalization analysis to investigate this causal relationship. Methods Summary data of genome-wide association study were obtained for ALS and the brain structures, including surface area (SA), thickness and volume of subcortical structures. Inverse-variance weighted (IVW) method was used as the main estimate approach. Sensitivity analysis was conducted detect heterogeneity and pleiotropy. Colocalization analysis was performed to calculate the posterior probability of causal variation and identify the common genes. Results In the forward MR analysis, we found positive associations between the SA in four cortical regions (lingual, parahippocampal, pericalcarine, and middle temporal) and the risk of ALS. Additionally, decreased thickness in nine cortical regions (caudal anterior cingulate, frontal pole, fusiform, inferior temporal, lateral occipital, lateral orbitofrontal, pars orbitalis, pars triangularis, and pericalcarine) was significantly associated with a higher risk of ALS. In the reverse MR analysis, genetically predicted ALS was associated with reduced thickness in the bankssts and increased thickness in the caudal middle frontal, inferior parietal, medial orbitofrontal, and superior temporal regions. Colocalization analysis revealed the presence of shared causal variants between the two traits. Conclusion Our results suggest that altered brain morphometry in individuals with high ALS risk may be genetically mediated. The causal associations of widespread multifocal extra-motor atrophy in frontal and temporal lobes with ALS risk support the notion of a continuum between ALS and frontotemporal dementia. These findings enhance our understanding of the cortical structural patterns in ALS and shed light on potentially viable therapeutic targets.
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Affiliation(s)
| | | | | | | | | | | | | | - Yuan Yang
- Department of Medical Genetics, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
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ŞtefŞnescu E, Strilciuc Ş, Chelaru VF, Chira D, Mureşanu D. Eye tracking assessment of Parkinson's disease: a clinical retrospective analysis. J Med Life 2024; 17:360-367. [PMID: 39044921 PMCID: PMC11262608 DOI: 10.25122/jml-2024-0270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Accepted: 05/16/2024] [Indexed: 07/25/2024] Open
Abstract
Parkinson's disease (PD) presents a significant clinical challenge due to its profound motor and cognitive impacts. Early diagnosis is crucial for implementing effective, stage-based treatment strategies. Recently, eye-tracking technology has emerged as a promising tool for the non-invasive diagnosis and monitoring of various neurological disorders, including PD. This retrospective study analyzed eye-tracking parameters, specifically visually-guided saccades (VGS), in PD patients within a clinical setting. We reviewed eye-tracking data from 62 PD patients, focusing on eye movement performance in horizontal and vertical VGS tasks. Our findings revealed significant correlations between demographic profiles, Mini-Mental State Examination (MMSE) scores, pattern recognition, and spatial working memory tests with saccadic performance in PD patients. Despite the retrospective nature of the study, our results support the potential of eye-tracking technology as a valuable diagnostic tool in PD assessment and monitoring. Future research should prioritize longitudinal studies and more comprehensive assessments to further understand and enhance the clinical application of eye-tracking in PD.
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Affiliation(s)
- Emanuel ŞtefŞnescu
- Department of Neuroscience, Iuliu Hațieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
- RoNeuro Institute for Neurological Research and Diagnostic, Cluj-Napoca, Romania
| | - ştefan Strilciuc
- RoNeuro Institute for Neurological Research and Diagnostic, Cluj-Napoca, Romania
- Research Center for Functional Genomics, Biomedicine, and Translational Medicine, Iuliu Hațieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Vlad-Florin Chelaru
- Department of Neuroscience, Iuliu Hațieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
- RoNeuro Institute for Neurological Research and Diagnostic, Cluj-Napoca, Romania
| | - Diana Chira
- Department of Neuroscience, Iuliu Hațieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
- RoNeuro Institute for Neurological Research and Diagnostic, Cluj-Napoca, Romania
| | - Dafin Mureşanu
- Department of Neuroscience, Iuliu Hațieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
- RoNeuro Institute for Neurological Research and Diagnostic, Cluj-Napoca, Romania
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Lopergolo D, Bargagli A, Satolli S, Barghigiani M, Mignarri A, Musumeci O, Maria Santorelli F, Rufa A. Oculomotor features in SCA27B patients. Clin Neurophysiol 2024; 158:56-58. [PMID: 38176158 DOI: 10.1016/j.clinph.2023.12.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 12/13/2023] [Accepted: 12/15/2023] [Indexed: 01/06/2024]
Affiliation(s)
- Diego Lopergolo
- Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy; UOC Neurologia e Malattie Neurometaboliche, Azienda Ospedaliero-Universitaria Senese, Siena, Italy
| | - Alessia Bargagli
- Evalab-Neurosense, Department of Medicine, Surgery and Neuroscience, University of Siena, Italy
| | - Sara Satolli
- Molecular Medicine for Neurodegenerative and Neuromuscular Diseases Unit, IRCCS Fondazione Stella Maris, Pisa, Italy
| | - Melissa Barghigiani
- Molecular Medicine for Neurodegenerative and Neuromuscular Diseases Unit, IRCCS Fondazione Stella Maris, Pisa, Italy
| | - Andrea Mignarri
- UOC Neurologia e Malattie Neurometaboliche, Azienda Ospedaliero-Universitaria Senese, Siena, Italy
| | - Olimpia Musumeci
- Unit of Neurology and Neuromuscular Disorders, Department of Clinical and Experimental Medicine, University of Messina, Italy
| | - Filippo Maria Santorelli
- Molecular Medicine for Neurodegenerative and Neuromuscular Diseases Unit, IRCCS Fondazione Stella Maris, Pisa, Italy
| | - Alessandra Rufa
- Department of Medicine, Surgery, and Neurosciences, University of Siena, Siena, Italy; UOC Neurologia e Malattie Neurometaboliche, Azienda Ospedaliero-Universitaria Senese, Siena, Italy; Evalab-Neurosense, Department of Medicine, Surgery and Neuroscience, University of Siena, Italy.
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Nakamagoe K, Matsumoto S, Touno N, Tateno I, Koganezawa T. Saccadic oscillations as a biomarker of clinical symptoms in amyotrophic lateral sclerosis. Neurol Sci 2023; 44:2787-2793. [PMID: 36872386 DOI: 10.1007/s10072-023-06719-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Accepted: 02/27/2023] [Indexed: 03/07/2023]
Abstract
BACKGROUND Among eye movements in amyotrophic lateral sclerosis (ALS), we identified the characteristics of square-wave jerks (SWJs) seen during times without visual fixation (VF) and analyzed their relationships with clinical parameters. MATERIALS AND METHODS Clinical symptoms were evaluated and eye movements were tested using electronystagmography in 15 patients with ALS (10 men, 5 women; mean age, 66.9 ± 10.5 years). SWJs with and without VF were recorded, and their characteristics were identified. Relationships between each SWJ parameter and clinical symptoms were evaluated. Results were compared with eye movement data from 18 healthy individuals. RESULTS The frequency of SWJs without VF was significantly higher in the ALS group than in the healthy group (P < 0.001). When the condition was changed from VF to no-VF in the ALS group, the frequency of SWJs was significantly higher in healthy subjects (P = 0.004). A positive correlation was seen between frequency of SWJs and percentage predicted forced vital capacity (%FVC) (R = 0.546, P = 0.035). CONCLUSION The frequency of SWJs was higher with VF in healthy people, and was suppressed without VF. In contrast, the frequency of SWJs was not suppressed without VF in ALS patients. This suggests that SWJs without VF have some clinical significance in ALS patients. Moreover, a relationship was noted between the parameters of SWJs without VF in ALS patients and results of pulmonary function tests, suggesting that SWJs during times without VF may offer a clinical parameter of ALS.
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Affiliation(s)
- Kiyotaka Nakamagoe
- Department of Neurology, Division of Clinical Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan.
| | - Shunya Matsumoto
- Department of Neurology, Division of Clinical Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Nozomi Touno
- Department of Neurology, Division of Clinical Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Ikumi Tateno
- Department of Neurology, Division of Clinical Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Tadachika Koganezawa
- Department of Physiology, Division of Biomedical Science, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
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