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Shin HJ, Costello F. Imaging the optic nerve with optical coherence tomography. Eye (Lond) 2024; 38:2365-2379. [PMID: 38961147 PMCID: PMC11306400 DOI: 10.1038/s41433-024-03165-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 06/03/2024] [Accepted: 06/04/2024] [Indexed: 07/05/2024] Open
Abstract
Optical coherence tomography (OCT) is a non-invasive imaging technology, which may be used to generate in vivo quantitative and qualitative measures of retinal structure. In terms of quantitative metrics, peripapillary retinal nerve fiber layer (pRNFL) thickness provides an indirect evaluation of axonal integrity within the optic nerve. Ganglion layer measures derived from macular scans indirectly reflect retinal ganglion cell status. Notably, ganglion layer indices are platform dependent and may include macular ganglion cell inner plexiform layer (mGCIPL), ganglion cell layer (GCL), and ganglion cell complex (GCC) analyses of thickness or volume. Interpreted together, pRNFL thickness and ganglion layer values can be used to diagnose optic neuropathies, monitor disease progression, and gauge response to therapeutic interventions for neuro-ophthalmic conditions. Qualitative assessments of the optic nerve head, using cross-sectional transverse axial, en face, and circular OCT imaging, may help distinguish papilledema from pseudopapilloedema, and identify outer retinal pathology. Innovations in OCT protocols and approaches including enhanced depth imaging (EDI), swept source (SS) techniques, and angiography (OCTA) may offer future insights regarding the potential pathogenesis of different optic neuropathies. Finally, recent developments in artificial intelligence (AI) utilizing OCT images may overcome longstanding challenges, which have plagued non-vision specialists who often struggle to perform reliable ophthalmoscopy. In this review, we aim to discuss the benefits and pitfalls of OCT, consider the practical applications of this technology in the assessment of optic neuropathies, and highlight scientific discoveries in the realm of optic nerve imaging that will ultimately change how neuro-ophthalmologists care for patients.
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Affiliation(s)
- Hyun Jin Shin
- Konkuk University School of Medicine, Chungju city, Republic of Korea
- Department of Ophthalmology, Konkuk University Medical Center, Seoul, Republic of Korea
- Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Republic of Korea
- Institute of Biomedical Science & Technology, Konkuk University, Seoul, Republic of Korea
| | - Fiona Costello
- Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
- Department of Surgery, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
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2
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Prathapan V, Eipert P, Wigger N, Kipp M, Appali R, Schmitt O. Modeling and simulation for prediction of multiple sclerosis progression. Comput Biol Med 2024; 175:108416. [PMID: 38657465 DOI: 10.1016/j.compbiomed.2024.108416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 03/28/2024] [Accepted: 04/03/2024] [Indexed: 04/26/2024]
Abstract
In light of extensive work that has created a wide range of techniques for predicting the course of multiple sclerosis (MS) disease, this paper attempts to provide an overview of these approaches and put forth an alternative way to predict the disease progression. For this purpose, the existing methods for estimating and predicting the course of the disease have been categorized into clinical, radiological, biological, and computational or artificial intelligence-based markers. Weighing the weaknesses and strengths of these prognostic groups is a profound method that is yet in need and works directly at the level of diseased connectivity. Therefore, we propose using the computational models in combination with established connectomes as a predictive tool for MS disease trajectories. The fundamental conduction-based Hodgkin-Huxley model emerged as promising from examining these studies. The advantage of the Hodgkin-Huxley model is that certain properties of connectomes, such as neuronal connection weights, spatial distances, and adjustments of signal transmission rates, can be taken into account. It is precisely these properties that are particularly altered in MS and that have strong implications for processing, transmission, and interactions of neuronal signaling patterns. The Hodgkin-Huxley (HH) equations as a point-neuron model are used for signal propagation inside a small network. The objective is to change the conduction parameter of the neuron model, replicate the changes in myelin properties in MS and observe the dynamics of the signal propagation across the network. The model is initially validated for different lengths, conduction values, and connection weights through three nodal connections. Later, these individual factors are incorporated into a small network and simulated to mimic the condition of MS. The signal propagation pattern is observed after inducing changes in conduction parameters at certain nodes in the network and compared against a control model pattern obtained before the changes are applied to the network. The signal propagation pattern varies as expected by adapting to the input conditions. Similarly, when the model is applied to a connectome, the pattern changes could give an insight into disease progression. This approach has opened up a new path to explore the progression of the disease in MS. The work is in its preliminary state, but with a future vision to apply this method in a connectome, providing a better clinical tool.
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Affiliation(s)
- Vishnu Prathapan
- Medical School Hamburg University of Applied Sciences and Medical University, Am Kaiserkai 1, 20457, Hamburg, Germany.
| | - Peter Eipert
- Medical School Hamburg University of Applied Sciences and Medical University, Am Kaiserkai 1, 20457, Hamburg, Germany.
| | - Nicole Wigger
- Department of Anatomy, University of Rostock Gertrudenstr 9, 18057, Rostock, Germany.
| | - Markus Kipp
- Department of Anatomy, University of Rostock Gertrudenstr 9, 18057, Rostock, Germany.
| | - Revathi Appali
- Institute of General Electrical Engineering, University of Rostock, Albert-Einstein-Straße 2, 18059, Rostock, Germany; Department of Aging of Individuals and Society, Interdisciplinary Faculty, University of Rostock, Universitätsplatz 1, 18055, Rostock, Germany.
| | - Oliver Schmitt
- Medical School Hamburg University of Applied Sciences and Medical University, Am Kaiserkai 1, 20457, Hamburg, Germany; Department of Anatomy, University of Rostock Gertrudenstr 9, 18057, Rostock, Germany.
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Oh J, Giacomini PS, Yong VW, Costello F, Blanchette F, Freedman MS. From progression to progress: The future of multiple sclerosis. J Cent Nerv Syst Dis 2024; 16:11795735241249693. [PMID: 38711957 PMCID: PMC11072059 DOI: 10.1177/11795735241249693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 04/08/2024] [Indexed: 05/08/2024] Open
Abstract
Significant advances have been made in the diagnosis and treatment of multiple sclerosis in recent years yet challenges remain. The current classification of MS phenotypes according to disease activity and progression, for example, does not adequately reflect the underlying pathophysiological mechanisms that may be acting in an individual with MS at different time points. Thus, there is a need for clinicians to transition to a management approach based on the underlying pathophysiological mechanisms that drive disability in MS. A Canadian expert panel convened in January 2023 to discuss priorities for clinical discovery and scientific exploration that would help advance the field. Five key areas of focus included: identifying a mechanism-based disease classification system; developing biomarkers (imaging, fluid, digital) to identify pathologic processes; implementing a data-driven approach to integrate genetic/environmental risk factors, clinical findings, imaging and biomarker data, and patient-reported outcomes to better characterize the many factors associated with disability progression; utilizing precision-based treatment strategies to target different disease processes; and potentially preventing disease through Epstein-Barr virus (EBV) vaccination, counselling about environmental risk factors (e.g. obesity, exercise, vitamin D/sun exposure, smoking) and other measures. Many of the tools needed to meet these needs are currently available. Further work is required to validate emerging biomarkers and tailor treatment strategies to the needs of individual patients. The hope is that a more complete view of the individual's pathobiology will enable clinicians to usher in an era of truly personalized medicine, in which more informed treatment decisions throughout the disease course achieve better long-term outcomes.
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Affiliation(s)
- Jiwon Oh
- St. Michael’s Hospital, Toronto, ON, Canada
| | | | - V. Wee Yong
- University of Calgary and Hotchkiss Brain Institute, Calgary, Canada
| | - Fiona Costello
- University of Calgary and Hotchkiss Brain Institute, Calgary, Canada
| | | | - Mark S. Freedman
- Department of Medicine¸ University of Ottawa, Ottawa, ON, Canada
- The Ottawa Hospital Research Institute, Ottawa, QC, Canada
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Riboni-Verri G, Chen BS, McMurran CE, Halliwell GJ, Brown JWL, Coles AJ, Cunniffe NG. Visual outcome measures in clinical trials of remyelinating drugs. BMJ Neurol Open 2024; 6:e000560. [PMID: 38389586 PMCID: PMC10882304 DOI: 10.1136/bmjno-2023-000560] [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: 10/16/2023] [Accepted: 01/15/2024] [Indexed: 02/24/2024] Open
Abstract
One of the most promising approaches to delay, prevent or reverse disability progression in multiple sclerosis (MS) is to enhance endogenous remyelination and limit axonal degeneration. In clinical trials of remyelinating drugs, there is a need for reliable, sensitive and clinically relevant outcome measures. The visual pathway, which is frequently affected by MS, provides a unique model system to evaluate remyelination of acute and chronic MS lesions in vivo and non-invasively. In this review, we discuss the different measures that have been used and scrutinise visual outcome measure selection in current and future remyelination trials.
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Affiliation(s)
- Gioia Riboni-Verri
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
- Cambridge Clinical Vision Laboratory, University of Cambridge, Cambridge, UK
| | - Benson S Chen
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
- Cambridge Clinical Vision Laboratory, University of Cambridge, Cambridge, UK
| | - Christopher E McMurran
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
- Cambridge Clinical Vision Laboratory, University of Cambridge, Cambridge, UK
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Gregory J Halliwell
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - J William L Brown
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
- Clinical Outcomes Research Unit (CORe), University of Melbourne, Melborune, Melborune, Australia
| | - Alasdair J Coles
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
- Cambridge Clinical Vision Laboratory, University of Cambridge, Cambridge, UK
| | - Nick G Cunniffe
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
- Cambridge Clinical Vision Laboratory, University of Cambridge, Cambridge, UK
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Parisi V, Barbano L, Antonelli G, Nicoletti CG, Landi D, Mataluni G, Di Renzo A, Buttari F, Marfia GA, Centonze D, Ziccardi L. Topographical Correlation between Structural and Functional Impairment of the Macular Inner Retinal Layers in Multiple Sclerosis Eyes with a History of Optic Neuropathy. J Clin Med 2023; 12:7175. [PMID: 38002787 PMCID: PMC10672405 DOI: 10.3390/jcm12227175] [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: 10/19/2023] [Revised: 11/09/2023] [Accepted: 11/15/2023] [Indexed: 11/26/2023] Open
Abstract
We investigated the potential correlation between morphological and functional parameters describing the rarefaction and dysfunction of retinal ganglion cells (RGCs), located in the macula, in multiple sclerosis eyes with a history of optic neuritis (MS-ON). A total of 19 MS-ON eyes from 19 MS patients (mean age: 44.16 ± 4.66 years; 11 females and 8 males), with a mean disease duration of 10.06 ± 6.12 years and full recovery of visual acuity, and 30 age-similar (mean age: 45.09 ± 5.08 years) healthy eyes were submitted for ophthalmological evaluation using swept-source optical coherence tomography (SS-OCT) and multifocal photopic negative response (mfPhNR) to study the structural and functional features of localized RGCs. Both GCL+ thickness (via SS-OCT) and response amplitude density (RAD) (via mfPhNR) measurements were obtained from annular regions and ETDRS sectors. Morphological and electrophysiological data from the control and MS groups were compared by using an ANOVA test. GCL+ values were correlated with the corresponding RADs derived from almost superimposable areas using Pearson's tests (p < 0.01). In MS-ON eyes, the mean values of macular GCL+-T and mfPhNR RAD detected in all rings and ETDRS sectors were significantly reduced (p < 0.01) when compared with control ones. In addition, when plotting the GCL+-T and mfPhNR RAD individual data from MS-ON eyes, we found statistically significant linear correlations (p < 0.01) when considering responses from both rings and sectors. In conclusion, in MS-ON eyes, a topographical correlation between structural and functional impairment of macular RGCs occurs.
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Affiliation(s)
- Vincenzo Parisi
- IRCCS—Fondazione Bietti, Via Livenza 1, 00198 Rome, Italy; (V.P.); (G.A.); (A.D.R.); (L.Z.)
| | - Lucilla Barbano
- IRCCS—Fondazione Bietti, Via Livenza 1, 00198 Rome, Italy; (V.P.); (G.A.); (A.D.R.); (L.Z.)
| | - Giulio Antonelli
- IRCCS—Fondazione Bietti, Via Livenza 1, 00198 Rome, Italy; (V.P.); (G.A.); (A.D.R.); (L.Z.)
| | - Carolina Gabri Nicoletti
- Multiple Sclerosis Unit, Policlinico Tor Vergata, Viale Oxford 81, 00133 Rome, Italy; (C.G.N.); (D.L.); (G.M.); (G.A.M.)
| | - Doriana Landi
- Multiple Sclerosis Unit, Policlinico Tor Vergata, Viale Oxford 81, 00133 Rome, Italy; (C.G.N.); (D.L.); (G.M.); (G.A.M.)
- Department of Systems Medicine, Tor Vergata University, Via Montpellier 1, 00133 Rome, Italy; (F.B.); (D.C.)
| | - Giorgia Mataluni
- Multiple Sclerosis Unit, Policlinico Tor Vergata, Viale Oxford 81, 00133 Rome, Italy; (C.G.N.); (D.L.); (G.M.); (G.A.M.)
| | - Antonio Di Renzo
- IRCCS—Fondazione Bietti, Via Livenza 1, 00198 Rome, Italy; (V.P.); (G.A.); (A.D.R.); (L.Z.)
| | - Fabio Buttari
- Department of Systems Medicine, Tor Vergata University, Via Montpellier 1, 00133 Rome, Italy; (F.B.); (D.C.)
- Unit of Neurology, IRCCS—Neuromed, Via Atinense 18, 86077 Pozzilli, Italy
| | - Girolama Alessandra Marfia
- Multiple Sclerosis Unit, Policlinico Tor Vergata, Viale Oxford 81, 00133 Rome, Italy; (C.G.N.); (D.L.); (G.M.); (G.A.M.)
- Department of Systems Medicine, Tor Vergata University, Via Montpellier 1, 00133 Rome, Italy; (F.B.); (D.C.)
| | - Diego Centonze
- Department of Systems Medicine, Tor Vergata University, Via Montpellier 1, 00133 Rome, Italy; (F.B.); (D.C.)
- Unit of Neurology, IRCCS—Neuromed, Via Atinense 18, 86077 Pozzilli, Italy
| | - Lucia Ziccardi
- IRCCS—Fondazione Bietti, Via Livenza 1, 00198 Rome, Italy; (V.P.); (G.A.); (A.D.R.); (L.Z.)
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6
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Zhang Y, Zhang XJ, Yuan N, Wang YM, Ip P, Chen LJ, Tham CC, Pang CP, Yam JC. Secondhand smoke exposure and ocular health: A systematic review. Surv Ophthalmol 2023; 68:1166-1207. [PMID: 37479063 DOI: 10.1016/j.survophthal.2023.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 07/04/2023] [Accepted: 07/10/2023] [Indexed: 07/23/2023]
Abstract
The toxicology of secondhand smoke (SHS), along with the harm of its exposure to human health, has been generally acknowledged; however, specific evidence is lacking on the association between SHS exposure and ocular health. In this systematic review (PROSPERO registration number: CRD42022247992), we included 55 original articles published by 12 May 2023, which dealt with SHS exposure and ocular disorders, such as eye irritation, conjunctivitis, dry eye diseases, uveitis, myopia, astigmatism, contact lens discomfort, age-related macular degeneration, glaucoma, and thyroid eye disease that addressed the ocular neurovascular structures of the macular, retinal nerve fiber layer, choroid, and corneal biomechanical parameters. We found compelling correlational evidence for eye irritation, conjunctivitis, and dry eye symptoms-supporting that SHS exposure was positively associated with inflammatory and allergic changes in the eyes. Yet, evidence about the associations between SHS exposure and other ocular disorders, structures, and parameters is still limited or controversial. Given the limitations of existing literature, more investigations with high quality and rigorous design are warranted to elucidate the potentially harmful effects of SHS exposure on ocular health.
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Affiliation(s)
- Youjuan Zhang
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China; The Nethersole School of Nursing, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Xiu Juan Zhang
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China; Joint Shantou International Eye Center, Shantou University, Shantou, China
| | - Nan Yuan
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China; Kunming Bright Eye Hospital, Kunming, China
| | - Yu Meng Wang
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China; Department of Neurobiology, Interdisciplinary Center for Neurosciences (IZN), Heidelberg University, Heidelberg, Germany
| | - Patrick Ip
- Department of Paediatrics and Adolescent Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Li Jia Chen
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China; Joint Shantou International Eye Center, Shantou University, Shantou, China; Department of Ophthalmology and Visual Sciences, Prince of Wales Hospital, Hong Kong SAR, China; Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Clement C Tham
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China; Joint Shantou International Eye Center, Shantou University, Shantou, China; Department of Ophthalmology and Visual Sciences, Prince of Wales Hospital, Hong Kong SAR, China; Hong Kong Eye Hospital, Hong Kong SAR, China; Department of Ophthalmology, Hong Kong Children's Hospital, Hong Kong SAR, China; Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Chi Pui Pang
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China; Joint Shantou International Eye Center, Shantou University, Shantou, China; Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Jason C Yam
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China; Joint Shantou International Eye Center, Shantou University, Shantou, China; Department of Ophthalmology and Visual Sciences, Prince of Wales Hospital, Hong Kong SAR, China; Hong Kong Eye Hospital, Hong Kong SAR, China; Department of Ophthalmology, Hong Kong Children's Hospital, Hong Kong SAR, China; Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, Hong Kong SAR, China.
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Huang SC, Pisa M, Guerrieri S, Dalla Costa G, Comi G, Leocani L. Optical coherence tomography with voxel-based morphometry: a new tool to unveil focal retinal neurodegeneration in multiple sclerosis. Brain Commun 2023; 6:fcad249. [PMID: 38328398 PMCID: PMC10847824 DOI: 10.1093/braincomms/fcad249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 07/25/2023] [Accepted: 09/25/2023] [Indexed: 02/09/2024] Open
Abstract
Neurodegeneration is the main contributor to disability accumulation in multiple sclerosis. Previous studies in neuro-ophthalmology have revealed that neurodegeneration in multiple sclerosis also affects the neuro-retina. Optical coherence tomography has been used to measure thinning of retinal layers, which correlates with several other markers for axonal/neuronal loss in multiple sclerosis. However, the existing analytical tools have limitations in terms of sensitivity and do not provide topographical information. In this study, we aim to evaluate whether voxel-based morphometry can increase sensitivity in detecting neuroaxonal degeneration in the retina and offer topographical information. A total of 131 people with multiple sclerosis (41 clinically isolated syndrome, 53 relapsing-remitting and 37 progressive multiple sclerosis) and 50 healthy subjects were included. Only eyes with normal global peripapillary retinal nerve fibre layer thickness and no history of optic neuritis were considered. Voxel-based morphometry and voxel-wise statistical comparisons were performed on the following: (i) patients at different disease stages and 2) patients who experienced the first demyelination attack without subclinical optic neuritis, assessed by visual evoked potentials. Standard parameters failed to discern any differences; however, voxel-based morphometry-optical coherence tomography successfully detected focal macular atrophy of retinal nerve fibre layer and ganglion cell/inner plexiform layer, along with thickening of inner nuclear layer in patients who experienced the first demyelination attack (disease duration = 4.2 months). Notably, the atrophy pattern of the ganglion cell/inner plexiform layer was comparable across disease phenotypes. In contrast, the retinal nerve fibre layer atrophy spread from the optic nerve head to the fovea as the disease evolved towards the progressive phase. Furthermore, for patients who experienced the first neurological episode, the severity of retinal nerve fibre layer atrophy at entry could predict a second attack. Our results demonstrate that voxel-based morphometry-optical coherence tomography exhibits greater sensitivity than standard parameters in detecting focal retinal atrophy, even at clinical presentation, in eyes with no history of optic neuritis and with normal latency of visual evoked potentials. Thinning of the ganglion cell/inner plexiform layer primarily concentrated in nasal perifovea in all disease phenotypes, indicating selective vulnerability of retinal ganglion cells and their perifoveal axons. Conversely, the degree of retinal nerve fibre layer thinning seems to be related to the clinical course of multiple sclerosis. The findings suggest bidirectional neurodegeneration in the visual pathway. Voxel-based morphometry-optical coherence tomography shows potential as a valuable tool for monitoring neurodegeneration on a patient level and evaluating the efficacy of novel neuroprotective treatments.
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Affiliation(s)
- Su-Chun Huang
- Experimental Neurophysiology Unit, Institute of Experimental Neurology-INSPE, San Raffaele Scientific Institute, Milan 20132, Italy
| | - Marco Pisa
- Experimental Neurophysiology Unit, Institute of Experimental Neurology-INSPE, San Raffaele Scientific Institute, Milan 20132, Italy
| | - Simone Guerrieri
- Experimental Neurophysiology Unit, Institute of Experimental Neurology-INSPE, San Raffaele Scientific Institute, Milan 20132, Italy
| | - Gloria Dalla Costa
- Experimental Neurophysiology Unit, Institute of Experimental Neurology-INSPE, San Raffaele Scientific Institute, Milan 20132, Italy
| | - Giancarlo Comi
- Faculty of Medicine, Vita-Salute San Raffaele University, Milan 20132, Italy
- Department of Neurorehabilitation Science, Casa di Cura Igea, Milan 20144, Italy
| | - Letizia Leocani
- Experimental Neurophysiology Unit, Institute of Experimental Neurology-INSPE, San Raffaele Scientific Institute, Milan 20132, Italy
- Faculty of Medicine, Vita-Salute San Raffaele University, Milan 20132, Italy
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Blose BA, Lai A, Crosta C, Thompson JL, Silverstein SM. Retinal Neurodegeneration as a Potential Biomarker of Accelerated Aging in Schizophrenia Spectrum Disorders. Schizophr Bull 2023; 49:1316-1324. [PMID: 37459382 PMCID: PMC10483469 DOI: 10.1093/schbul/sbad102] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
BACKGROUND AND HYPOTHESES Several biological markers are believed to reflect accelerated aging in schizophrenia spectrum disorders; however, retinal neural changes have not yet been explored as potential CNS biomarkers of accelerated aging in this population. The aim of this study was to determine whether retinal neural layer thinning is more strongly related to age in schizophrenia and schizoaffective disorder patients (SZ) than in a psychiatrically healthy control group (CON). STUDY DESIGN Schizophrenia (n = 60) and CON participants (n = 69) underwent spectral domain optical coherence tomography (OCT) scans to examine the following variables in both eyes: retinal nerve fiber layer (RNFL) thickness, macula central subfield (CSF) thickness, macula volume, ganglion cell layer-inner plexiform layer (GCL-IPL) thickness, optic cup volume, and cup-to-disc ratio. Eleven participants in each group had diabetes or hypertension. STUDY RESULTS Significant negative relationships between age and RNFL thickness, macula volume, and GCL-IPL thickness were observed in the SZ group, while no significant relationships were observed in the CON group. However, many of the findings in the SZ group lost significance when participants with diabetes/hypertension were removed from analyses. A notable exception to this was that the age × SZ interaction accounted for a unique proportion of variance in GCL-IPL thinning over and above the effect of diabetes/hypertension. CONCLUSIONS The results suggest that retinal atrophy occurs at an increased rate in schizophrenia spectrum disorders, potentially reflecting accelerated aging inherent to these conditions, with considerable contributions from systemic medical diseases closely linked to this population.
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Affiliation(s)
- Brittany A Blose
- Department of Psychology, University of Rochester, Rochester, NY, USA
- Department of Psychiatry, University of Rochester Medical Center, Rochester, NY, USA
| | - Adriann Lai
- Department of Psychiatry, University of Rochester Medical Center, Rochester, NY, USA
- University Behavioral Health Care, Rutgers University, Piscataway, NJ, USA
| | - Christen Crosta
- Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, NJ, USA
| | - Judy L Thompson
- Department of Psychiatry, University of Rochester Medical Center, Rochester, NY, USA
- Department of Psychiatric Rehabilitation and Counseling Professions, Rutgers University, Piscataway, NJ, USA
| | - Steven M Silverstein
- Department of Psychiatry, University of Rochester Medical Center, Rochester, NY, USA
- University Behavioral Health Care, Rutgers University, Piscataway, NJ, USA
- Department of Psychiatry, Rutgers University, Piscataway, NJ, USA
- Department of Neuroscience, University of Rochester Medical Center, Rochester, NY, USA
- Department of Ophthalmology, University of Rochester Medical Center, Rochester, NY, USA
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9
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Khodabandeh Z, Rabbani H, Ashtari F, Zimmermann HG, Motamedi S, Brandt AU, Paul F, Kafieh R. Discrimination of multiple sclerosis using OCT images from two different centers. Mult Scler Relat Disord 2023; 77:104846. [PMID: 37413855 DOI: 10.1016/j.msard.2023.104846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 06/19/2023] [Indexed: 07/08/2023]
Abstract
BACKGROUND Multiple sclerosis (MS) is one of the most prevalent chronic inflammatory diseases caused by demyelination and axonal damage in the central nervous system. Structural retinal imaging via optical coherence tomography (OCT) shows promise as a noninvasive biomarker for monitoring of MS. There are successful reports regarding the application of Artificial Intelligence (AI) in the analysis of cross-sectional OCTs in ophthalmologic diseases. However, the alteration of thicknesses of various retinal layers in MS is noticeably subtle compared to other ophthalmologic diseases. Therefore, raw cross-sectional OCTs are replaced with multilayer segmented OCTs for discrimination of MS and healthy controls (HCs). METHODS To conform to the principles of trustworthy AI, interpretability is provided by visualizing the regional layer contribution to classification performance with the proposed occlusion sensitivity approach. The robustness of the classification is also guaranteed by showing the effectiveness of the algorithm while being tested on the new independent dataset. The most discriminative features from different topologies of the multilayer segmented OCTs are selected by the dimension reduction method. Support vector machine (SVM), random forest (RF), and artificial neural network (ANN) are used for classification. Patient-wise cross-validation (CV) is utilized to evaluate the performance of the algorithm, where the training and test folds contain records from different subjects. RESULTS The most discriminative topology is determined to square with a size of 40 pixels and the most influential layers are the ganglion cell and inner plexiform layer (GCIPL) and inner nuclear layer (INL). Linear SVM resulted in 88% Accuracy (with standard deviation (std) = 0.49 in 10 times of execution to indicate the repeatability), 78% precision (std=1.48), and 63% recall (std=1.35) in the discrimination of MS and HCs using macular multilayer segmented OCTs. CONCLUSION The proposed classification algorithm is expected to help neurologists in the early diagnosis of MS. This paper distinguishes itself from other studies by employing two distinct datasets, which enhances the robustness of its findings in comparison with previous studies with lack of external validation. This study aims to circumvent the utilization of deep learning methods due to the limited quantity of the available data and convincingly demonstrates that favorable outcomes can be achieved without relying on deep learning techniques.
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Affiliation(s)
- Zahra Khodabandeh
- School of Advanced Technologies in Medicine, Medical Image and Signal Processing Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Hossein Rabbani
- School of Advanced Technologies in Medicine, Medical Image and Signal Processing Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Fereshteh Ashtari
- Isfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Hanna G Zimmermann
- Experimental and Clinical Research Center, Max Delbrück Center for Molecular Medicine and Charité- Universitätsmedizin Berlin, Berlin, Germany; NeuroCure Clinical Research Center- Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Seyedamirhosein Motamedi
- Experimental and Clinical Research Center, Max Delbrück Center for Molecular Medicine and Charité- Universitätsmedizin Berlin, Berlin, Germany; NeuroCure Clinical Research Center- Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Alexander U Brandt
- Experimental and Clinical Research Center, Max Delbrück Center for Molecular Medicine and Charité- Universitätsmedizin Berlin, Berlin, Germany; NeuroCure Clinical Research Center- Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany; Department of Neurology, University of California, Irvine, CA, USA
| | - Friedemann Paul
- Experimental and Clinical Research Center, Max Delbrück Center for Molecular Medicine and Charité- Universitätsmedizin Berlin, Berlin, Germany; NeuroCure Clinical Research Center- Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany; Department of Neurology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Rahele Kafieh
- School of Advanced Technologies in Medicine, Medical Image and Signal Processing Research Center, Isfahan University of Medical Sciences, Isfahan, Iran; NeuroCure Clinical Research Center- Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany; Department of Engineering, Durham University, Durham, UK.
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10
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Bsteh G, Hegen H, Altmann P, Auer M, Berek K, Di Pauli F, Kornek B, Krajnc N, Leutmezer F, Macher S, Rommer PS, Zebenholzer K, Zulehner G, Zrzavy T, Deisenhammer F, Pemp B, Berger T. Diagnostic Performance of Adding the Optic Nerve Region Assessed by Optical Coherence Tomography to the Diagnostic Criteria for Multiple Sclerosis. Neurology 2023; 101:e784-e793. [PMID: 37400245 PMCID: PMC10449446 DOI: 10.1212/wnl.0000000000207507] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 04/24/2023] [Indexed: 07/05/2023] Open
Abstract
BACKGROUND AND OBJECTIVES The optic nerve has been recommended as an additional region for demonstrating dissemination in space (DIS) in diagnostic criteria for multiple sclerosis (MS). The aim of this study was to investigate whether adding the optic nerve region as determined by optical coherence tomography (OCT) as part of the DIS criteria improves the 2017 diagnostic criteria. METHODS From a prospective observational study, we included patients with a first demyelinating event who had complete information to assess DIS and a spectral domain OCT scan obtained within 180 days. Modified DIS criteria (DIS + OCT) were constructed by adding the optic nerve to the current DIS regions based on validated thresholds for OCT intereye differences. Time to second clinical attack was the primary endpoint. RESULTS We analyzed 267 patients with MS (mean age 31.3 years [SD 8.1], 69% female) during a median observation period of 59 months (range: 13-98). Adding the optic nerve as a fifth region improved the diagnostic performance by increasing accuracy (DIS + OCT 81.2% vs DIS 65.6%) and sensitivity (DIS + OCT 84.2% vs DIS 77.9%) without lowering specificity (DIS + OCT 52.2% vs DIS 52.2%). Fulfilling DIS + OCT criteria (≥2 of 5 DIS + OCT regions involved) indicated a similar risk of a second clinical attack (hazard ratio [HR] 3.6, CI 1.4-14.5) compared with a 2.5-fold increased risk when fulfilling DIS criteria (HR 2.5, CI 1.2-11.8). When the analysis was conducted according to topography of the first demyelinating event, DIS + OCT criteria performed similarly in both optic neuritis and nonoptic neuritis. DISCUSSION Addition of the optic nerve, assessed by OCT, as a fifth region in the current DIS criteria improves diagnostic performance by increasing sensitivity without lowering specificity. CLASSIFICATION OF EVIDENCE This study provides Class II evidence that adding the optic nerve as determined by OCT as a fifth DIS criterion to the 2017 McDonald criteria improves diagnostic accuracy.
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Affiliation(s)
- Gabriel Bsteh
- From the Department of Neurology (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Comprehensive Center for Clinical Neurosciences and Mental Health (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Department of Neurology (H.H., M.A., K.B., F.D.P., F.D.), Medical University of Innsbruck; and Department of Ophthalmology (B.P.), Medical University of Vienna, Austria.
| | - Harald Hegen
- From the Department of Neurology (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Comprehensive Center for Clinical Neurosciences and Mental Health (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Department of Neurology (H.H., M.A., K.B., F.D.P., F.D.), Medical University of Innsbruck; and Department of Ophthalmology (B.P.), Medical University of Vienna, Austria
| | - Patrick Altmann
- From the Department of Neurology (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Comprehensive Center for Clinical Neurosciences and Mental Health (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Department of Neurology (H.H., M.A., K.B., F.D.P., F.D.), Medical University of Innsbruck; and Department of Ophthalmology (B.P.), Medical University of Vienna, Austria
| | - Michael Auer
- From the Department of Neurology (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Comprehensive Center for Clinical Neurosciences and Mental Health (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Department of Neurology (H.H., M.A., K.B., F.D.P., F.D.), Medical University of Innsbruck; and Department of Ophthalmology (B.P.), Medical University of Vienna, Austria
| | - Klaus Berek
- From the Department of Neurology (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Comprehensive Center for Clinical Neurosciences and Mental Health (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Department of Neurology (H.H., M.A., K.B., F.D.P., F.D.), Medical University of Innsbruck; and Department of Ophthalmology (B.P.), Medical University of Vienna, Austria
| | - Franziska Di Pauli
- From the Department of Neurology (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Comprehensive Center for Clinical Neurosciences and Mental Health (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Department of Neurology (H.H., M.A., K.B., F.D.P., F.D.), Medical University of Innsbruck; and Department of Ophthalmology (B.P.), Medical University of Vienna, Austria
| | - Barbara Kornek
- From the Department of Neurology (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Comprehensive Center for Clinical Neurosciences and Mental Health (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Department of Neurology (H.H., M.A., K.B., F.D.P., F.D.), Medical University of Innsbruck; and Department of Ophthalmology (B.P.), Medical University of Vienna, Austria
| | - Nik Krajnc
- From the Department of Neurology (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Comprehensive Center for Clinical Neurosciences and Mental Health (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Department of Neurology (H.H., M.A., K.B., F.D.P., F.D.), Medical University of Innsbruck; and Department of Ophthalmology (B.P.), Medical University of Vienna, Austria
| | - Fritz Leutmezer
- From the Department of Neurology (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Comprehensive Center for Clinical Neurosciences and Mental Health (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Department of Neurology (H.H., M.A., K.B., F.D.P., F.D.), Medical University of Innsbruck; and Department of Ophthalmology (B.P.), Medical University of Vienna, Austria
| | - Stefan Macher
- From the Department of Neurology (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Comprehensive Center for Clinical Neurosciences and Mental Health (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Department of Neurology (H.H., M.A., K.B., F.D.P., F.D.), Medical University of Innsbruck; and Department of Ophthalmology (B.P.), Medical University of Vienna, Austria
| | - Paulus Stefan Rommer
- From the Department of Neurology (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Comprehensive Center for Clinical Neurosciences and Mental Health (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Department of Neurology (H.H., M.A., K.B., F.D.P., F.D.), Medical University of Innsbruck; and Department of Ophthalmology (B.P.), Medical University of Vienna, Austria
| | - Karin Zebenholzer
- From the Department of Neurology (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Comprehensive Center for Clinical Neurosciences and Mental Health (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Department of Neurology (H.H., M.A., K.B., F.D.P., F.D.), Medical University of Innsbruck; and Department of Ophthalmology (B.P.), Medical University of Vienna, Austria
| | - Gudrun Zulehner
- From the Department of Neurology (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Comprehensive Center for Clinical Neurosciences and Mental Health (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Department of Neurology (H.H., M.A., K.B., F.D.P., F.D.), Medical University of Innsbruck; and Department of Ophthalmology (B.P.), Medical University of Vienna, Austria
| | - Tobias Zrzavy
- From the Department of Neurology (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Comprehensive Center for Clinical Neurosciences and Mental Health (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Department of Neurology (H.H., M.A., K.B., F.D.P., F.D.), Medical University of Innsbruck; and Department of Ophthalmology (B.P.), Medical University of Vienna, Austria
| | - Florian Deisenhammer
- From the Department of Neurology (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Comprehensive Center for Clinical Neurosciences and Mental Health (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Department of Neurology (H.H., M.A., K.B., F.D.P., F.D.), Medical University of Innsbruck; and Department of Ophthalmology (B.P.), Medical University of Vienna, Austria
| | - Berthold Pemp
- From the Department of Neurology (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Comprehensive Center for Clinical Neurosciences and Mental Health (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Department of Neurology (H.H., M.A., K.B., F.D.P., F.D.), Medical University of Innsbruck; and Department of Ophthalmology (B.P.), Medical University of Vienna, Austria
| | - Thomas Berger
- From the Department of Neurology (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Comprehensive Center for Clinical Neurosciences and Mental Health (G.B., P.A., B.K., N.K., F.L., S.M., P.S.R., K.Z., G.Z., T.Z., T.B.), Medical University of Vienna; Department of Neurology (H.H., M.A., K.B., F.D.P., F.D.), Medical University of Innsbruck; and Department of Ophthalmology (B.P.), Medical University of Vienna, Austria
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Changes in Retinal Thickness and Brain Volume during 6.8-Year Escalating Therapy for Multiple Sclerosis. Acta Neurol Scand 2023. [DOI: 10.1155/2023/7587221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
Background. Different disease-modifying therapies (DMT) for multiple sclerosis (MS) have disparate effects on disability outcomes. Sweden has a leading position globally in initiating high-efficacy DMT instead of escalating DMT from 1st-line to high-efficacy DMT. With optical coherence tomography (OCT), retinal changes can be measured at a few micrometer level. OCT has been increasingly applied in diagnosing MS and monitoring disease course and therapeutic effect. Objective. We investigate the effects of 1st-line versus high-efficacy DMT for MS on retinal and brain atrophy and on functional outcomes during 6.8 years of escalating DMT. Materials and Methods. In this prospective longitudinal observational study, 18 MS patients were followed up for 6.8 years. Twelve of the patients were untreated at baseline. All patients underwent 1st-line DMT for median duration of 2.4 years and then switched to high-efficacy DMT for a median duration of 2.9 years. Findings from neurological examinations, MRI, and OCT measures were registered 2-4 times per year. Results. Ganglion cell-inner plexiform layer (GCIPL) thickness was significantly reduced during 1st-line DMT (73.75 μm,
) compared to baseline (76.38 μm). During high-efficacy DMT, thickness reduction was slower (73.27 μm,
), and MRI contrast-loading lesions vanished (
). However, brain parenchymal fraction (BPF) decreased during high-efficacy DMT compared to 1st-line DMT. Estimated models showed similar results. Conclusion. GCIPL decline was most profound during 1st-line DMT and diminished during high-efficacy DMT. MRI contrast lesions vanished during high-efficacy DMT. However, brain atrophy continued regardless of high-efficacy DMT.
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12
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Tiu VE, Popescu BO, Enache II, Tiu C, Cherecheanu AP, Panea CA. Serum Neurofilaments and OCT Metrics Predict EDSS-Plus Score Progression in Early Relapse-Remitting Multiple Sclerosis. Biomedicines 2023; 11:biomedicines11020606. [PMID: 36831142 PMCID: PMC9953670 DOI: 10.3390/biomedicines11020606] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/09/2023] [Accepted: 02/16/2023] [Indexed: 02/22/2023] Open
Abstract
(1) Background: Early disability accrual in RRMS patients is frequent and is associated with worse long-term prognosis. Correctly identifying the patients that present a high risk of early disability progression is of utmost importance, and may be aided by the use of predictive biomarkers. (2) Methods: We performed a prospective cohort study that included newly diagnosed RRMS patients, with a minimum follow-up period of one year. Biomarker samples were collected at baseline, 3-, 6- and 12-month follow-ups. Disability progression was measured using the EDSS-plus score. (3) Results: A logistic regression model based on baseline and 6-month follow-up sNfL z-scores, RNFL and GCL-IPL thickness and BREMSO score was statistically significant, with χ2(4) = 19.542, p < 0.0001, R2 = 0.791. The model correctly classified 89.1% of cases, with a sensitivity of 80%, a specificity of 93.5%, a positive predictive value of 85.7% and a negative predictive value of 90.62%. (4) Conclusions: Serum biomarkers (adjusted sNfL z-scores at baseline and 6 months) combined with OCT metrics (RNFL and GCL-IPL layer thickness) and the clinical score BREMSO can accurately predict early disability progression using the EDSS-plus score for newly diagnosed RRMS patients.
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Affiliation(s)
- Vlad Eugen Tiu
- Department of Clinical Neurosciences—Department 6 (Neurology)—“Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Neurology Department, Elias University Emergency Hospital, 011461 Bucharest, Romania
| | - Bogdan Ovidiu Popescu
- Department of Clinical Neurosciences—Department 6 (Neurology)—“Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Neurology Department, Colentina Clinical Hospital, 020125 Bucharest, Romania
- Correspondence:
| | - Iulian Ion Enache
- Department of Clinical Neurosciences—Department 6 (Neurology)—“Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Neurology Department, University Emergency Hospital of Bucharest, 050098 Bucharest, Romania
| | - Cristina Tiu
- Department of Clinical Neurosciences—Department 6 (Neurology)—“Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Neurology Department, University Emergency Hospital of Bucharest, 050098 Bucharest, Romania
| | - Alina Popa Cherecheanu
- Department of Clinical Neurosciences—Department 6 (Neurology)—“Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Ophtalmology Department, University Emergency Hospital of Bucharest, 050098 Bucharest, Romania
| | - Cristina Aura Panea
- Department of Clinical Neurosciences—Department 6 (Neurology)—“Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Neurology Department, Elias University Emergency Hospital, 011461 Bucharest, Romania
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13
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Heath Jeffery RC, Chen FK. Peripapillary hyperreflective ovoid mass-like structures: Multimodal imaging-A review. Clin Exp Ophthalmol 2023; 51:67-80. [PMID: 36300762 PMCID: PMC10099767 DOI: 10.1111/ceo.14182] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 10/04/2022] [Accepted: 10/21/2022] [Indexed: 11/07/2022]
Abstract
Peripapillary hyperreflective ovoid mass-like structures (PHOMS) are a laterally bulging herniation of distended axons into the peripapillary region above the level of Bruch's membrane opening. Increased use of enhanced depth imaging-optical coherence tomography (EDI-OCT) in our evaluation of the optic nerve head (ONH) and greater recognition of the vast range of optic nerve pathologies with which PHOMS is associated provides convincing evidence that PHOMS is not just buried optic disc drusen (ODD) as previously described. The frequent coexistence of PHOMS with ODD, papilloedema, anterior ischaemic optic neuropathy, tilted optic disc syndrome, inflammatory demyelinating disorders and other diseases associated with axoplasmic stasis provides insight into its underlying pathophysiology. The present review will discuss the role of key imaging modalities in the differential diagnosis of PHOMS, explore the current literature on the relationship between PHOMS and common neuro-ophthalmic conditions, and highlight the gaps in our knowledge, with respect to disease classification and prognosis, to pave the way for future directions of research.
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Affiliation(s)
- Rachael C Heath Jeffery
- Centre for Ophthalmology and Visual Science (incorporating Lions Eye Institute), The University of Western Australia, Nedlands, Western Australia, Australia.,Royal Victorian Eye and Ear Hospital (Centre for Eye Research Australia), East Melbourne, Victoria, Australia
| | - Fred K Chen
- Centre for Ophthalmology and Visual Science (incorporating Lions Eye Institute), The University of Western Australia, Nedlands, Western Australia, Australia.,Royal Victorian Eye and Ear Hospital (Centre for Eye Research Australia), East Melbourne, Victoria, Australia.,Ophthalmology, Department of Surgery, The University of Melbourne, East Melbourne, Victoria, Australia.,Department of Ophthalmology, Royal Perth Hospital, Western Australia, Australia
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14
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Hernández-Echevarría O, Cuétara-Lugo EB, Pérez-Benítez MJ, González-Gómez JC, González-Diez HR, Mendoza-Santiesteban CE. Bi-nasal sectors of ganglion cells complex and visual evoked potential amplitudes as biomarkers in pituitary macroadenoma management. Front Integr Neurosci 2022; 16:1034705. [PMID: 36506477 PMCID: PMC9730037 DOI: 10.3389/fnint.2022.1034705] [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: 09/01/2022] [Accepted: 11/01/2022] [Indexed: 11/25/2022] Open
Abstract
The study aimed to evaluate the retinal ganglion cell structure using optical coherence tomography and the visual pathway function employing visual evoked potentials in the diagnosis and monitoring of patients with pituitary macroadenoma. A descriptive, cross-sectional, and longitudinal study (3 and 12 months follow-up) was conducted on forty-two patients. Thirty-five age-matched healthy controls were used in the cross-sectional one. Full neuro-ophthalmological evaluation (structural and functional) was carried out including global and segmented retinal nerve fiber layer/ganglion cell complex analysis and amplitude and latency of P100 component in the electrophysiology. Statistical data analysis was conducted with R version 3.6.3 and Python version 3.8. Associations were evaluated using Spearman's correlations. Amplitude sensitivities were 0.999, and bi-nasal sectors of ganglion cell complex thickness specificities were 0.999. This structural parameter had the highest diagnostic value (area under curve = 0.923). Significant associations were found between bi-nasal sectors with amplitude at 12' (rho > 0.7, p < 0.01) and median deviation of the visual field (rho > 0.5, p < 0.01) at 3 months. Pre-surgical values of bi-nasal sectors and amplitude can predict post-surgically median deviation and amplitude (Oz, 12') at 3 months with r 2 > 0.5. Bi-nasal sectors of ganglion cell complex and visual evoked potentials P100 amplitude are efficient biomarkers of visual pathway damage for pituitary macroadenoma patients' management. Pre-surgical values of the bi-nasal sector and visual evoked potentials' amplitude could help to predict the restoration of parvocellular pathway traffic after decompression.
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Affiliation(s)
- Odelaisys Hernández-Echevarría
- Department of Neuro-ophthalmology, Cuban Institute of Ophthalmology “Ramón Pando Ferrer”, University of Medical Sciences of Havana, Havana, Cuba,*Correspondence: Odelaisys Hernández-Echevarría,
| | - Elizabeth Bárbara Cuétara-Lugo
- Department of Research and Academic, National Institute of Oncology and Radiobiology, University of Medical Sciences of Havana, Havana, Cuba
| | - Mario Jesús Pérez-Benítez
- Department of Research and Academic, National Institute of Oncology and Radiobiology, University of Medical Sciences of Havana, Havana, Cuba
| | - Julio César González-Gómez
- Department of Neuro-ophthalmology, Cuban Institute of Ophthalmology “Ramón Pando Ferrer”, University of Medical Sciences of Havana, Havana, Cuba
| | | | - Carlos E. Mendoza-Santiesteban
- Department of Neuro-ophthalmology, Bascom Palmer Eye Institute, University of Miami, Miller School of Medicine, Coral Gables, FL, United States
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Schultheiss M, Wenzel DA, Spitzer MS, Poli S, Wilhelm H, Tonagel F, Kelbsch C. [Optical coherence tomography in the differential diagnostics of important neuro-ophthalmological disease patterns]. DIE OPHTHALMOLOGIE 2022; 119:973-986. [PMID: 35994098 DOI: 10.1007/s00347-022-01728-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
There are many disease patterns that are treated jointly by neurologists and ophthalmologists, for which optical coherence tomography (OCT) is of important differential diagnostic significance. In this context neurologists are mainly confronted by two patient collectives: patients with an acute ischemic event, who present with an acute but painless monocular visual deterioration (for central retinal artery occlusion) or with a monocular visual field defect (for arterial branch occlusion or anterior ischemic optic neuropathy). The second collective is patients without ophthalmological symptoms but with conspicuous optic nerve findings (papilledema or optic disc drusen). In this overview article both patient collectives are considered separately. In addition, the most important OCT findings for optic neuritis are presented. Before the disease patterns are described in detail, the normal OCT findings and the diagnostic possibilities of OCT are explained.
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Affiliation(s)
- Maximilian Schultheiss
- Klinik und Poliklinik für Augenheilkunde, Universitätsklinikum Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Deutschland.
| | - Daniel A Wenzel
- Klinik und Poliklinik für Augenheilkunde, Universitätsklinikum Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Deutschland.
- Universitäts-Augenklinik, Department für Augenheilkunde, Universitätsklinikum Tübingen, Elfriede-Aulhorn-Straße 7, 72076, Tübingen, Deutschland.
| | - Martin S Spitzer
- Klinik und Poliklinik für Augenheilkunde, Universitätsklinikum Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Deutschland
| | - Sven Poli
- Neurologie mit Schwerpunkt neurovaskuläre Erkrankungen, Universitätsklinikum Tübingen, Tübingen, Deutschland
- Hertie-Institut für klinische Hirnforschung, Universitätsklinikum Tübingen, Tübingen, Deutschland
| | - Helmut Wilhelm
- Universitäts-Augenklinik, Department für Augenheilkunde, Universitätsklinikum Tübingen, Elfriede-Aulhorn-Straße 7, 72076, Tübingen, Deutschland
| | - Felix Tonagel
- Universitäts-Augenklinik, Department für Augenheilkunde, Universitätsklinikum Tübingen, Elfriede-Aulhorn-Straße 7, 72076, Tübingen, Deutschland
| | - Carina Kelbsch
- Universitäts-Augenklinik, Department für Augenheilkunde, Universitätsklinikum Tübingen, Elfriede-Aulhorn-Straße 7, 72076, Tübingen, Deutschland
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Abstract
PURPOSE OF REVIEW This article provides an update on progressive forms of multiple sclerosis (MS) commonly referred to as primary progressive MS and secondary progressive MS. It discusses the importance of diagnosing and detecting progression early, the similarities between progressive forms, challenges in detecting progression, factors that could augment progression, and the importance of disease-modifying therapies in patients with evidence of active progressive MS. It also discusses the overall care of progressive MS. RECENT FINDINGS The pathogenesis of primary progressive MS and secondary progressive MS is overlapping, and in both presentations, patients with relapses or focal MRI activity are classified as having active, progressive MS. All currently approved disease-modifying therapies are indicated for active secondary progressive MS. The therapeutic opportunity of anti-inflammatory drugs for the treatment of progressive MS is enhanced in those who are younger and have a shorter disease duration. Vascular comorbidities may contribute to progression in MS. SUMMARY Several challenges remain in the diagnosis, follow-up, and treatment of progressive MS. Early identification of active progressive MS is needed to maximize treatment benefit. The advantages of optimal comorbidity management (eg, hypertension, hyperlipidemia) in delaying progression are uncertain. Clinical care guidelines for advanced, severe MS are lacking.
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Abstract
PURPOSE OF REVIEW This article reviews the cardinal clinical features, distinct immunopathology, current diagnostic criteria, relapse-related risk factors, emerging biomarkers, and evolving treatment strategies pertaining to neuromyelitis optica spectrum disorders (NMOSD). RECENT FINDINGS The discovery of the pathogenic aquaporin-4 (AQP4)-IgG autoantibody and characterization of NMOSD as an autoimmune astrocytopathy have spearheaded the identification of key immunologic therapeutic targets in this disease, including but not limited to the complement system, the interleukin 6 (IL-6) receptor, and B cells. Accordingly, four recent randomized controlled trials have demonstrated the efficacy of three new NMOSD therapies, namely eculizumab, satralizumab, and inebilizumab. SUMMARY Currently, NMOSD poses both diagnostic and treatment challenges. It is debated whether individuals who are seropositive for myelin oligodendrocyte glycoprotein (MOG)-IgG belong within the neuromyelitis optica spectrum. This discussion is fueled by disparities in treatment responses between patients who are AQP4-IgG seropositive and seronegative, suggesting different immunopathologic mechanisms may govern these conditions. As our understanding regarding the immune pathophysiology of NMOSD expands, emerging biomarkers, including serum neurofilament light chain and glial fibrillary acidic protein (GFAP), may facilitate earlier relapse detection and inform long-term treatment decisions. Future research focal points should include strategies to optimize relapse management, restorative treatments that augment neurologic recovery, and practical solutions that promote equitable access to approved therapies for all patients with NMOSD.
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Meca-Lallana JE, Casanova B, Rodríguez-Antigüedad A, Eichau S, Izquierdo G, Durán C, Río J, Hernández MÁ, Calles C, Prieto-González JM, Ara JR, Uría DF, Costa-Frossard L, García-Merino A, Oreja-Guevara C. Consensus on early detection of disease progression in patients with multiple sclerosis. Front Neurol 2022; 13:931014. [PMID: 35968319 PMCID: PMC9366521 DOI: 10.3389/fneur.2022.931014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 06/28/2022] [Indexed: 11/24/2022] Open
Abstract
Background Early identification of the transition from relapsing-remitting multiple sclerosis (RRMS) to secondary progressive MS (SPMS) can be challenging for clinicians, as diagnostic criteria for SPMS are primarily based on physical disability and a holistic interpretation. Objective To establish a consensus on patient monitoring to identify promptly disease progression and the most useful clinical and paraclinical variables for early identification of disease progression in MS. Methods A RAND/UCLA Appropriateness Method was used to establish the level of agreement among a panel of 15 medical experts in MS. Eighty-three items were circulated to the experts for confidential rating of the grade of agreement and recommendation. Consensus was defined when ≥66% agreement or disagreement was achieved. Results Consensus was reached in 72 out of 83 items (86.7%). The items addressed frequency of follow-up visits, definition of progression, identification of clinical, cognitive, and radiological assessments as variables of suspected or confirmed SPMS diagnosis, the need for more accurate assessment tools, and the use of promising molecular and imaging biomarkers to predict disease progression and/or diagnose SPMS. Conclusion Consensus achieved on these topics could guide neurologists to identify earlier disease progression and to plan targeted clinical and therapeutic interventions during the earliest stages of SPMS.
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Affiliation(s)
- José E. Meca-Lallana
- CSUR Multiple Sclerosis and Clinical Neuroimmunology Unit, Neurology Department, Hospital Clínico Universitario Virgen de la Arrixaca, IMIB-Arrixaca, Murcia, Spain
- *Correspondence: José E. Meca-Lallana
| | - Bonaventura Casanova
- Department of Neurology, Hospital Universitario y Politécnico La Fe, Valencia, Spain
| | | | - Sara Eichau
- Department of Neurology, Hospital Universitario Virgen Macarena, Sevilla, Spain
| | | | - Carmen Durán
- Department of Neurology, Hospital Universitario de Badajoz, Badajoz, Spain
| | - Jordi Río
- CEMCAT, Hospital Universitario Vall d'Hebrón, Barcelona, Spain
| | - Miguel Ángel Hernández
- Department of Neurology, Hospital Universitario Nuestra Señora de la Candelaria, Santa Cruz de Tenerife, Spain
| | - Carmen Calles
- Department of Neurology, Hospital Universitario Son Espases, Palma de Mallorca, Spain
| | - José M. Prieto-González
- Department of Neurology, Hospital Clínico Universitario de Santiago, Santiago de Compostela, Spain
| | - José Ramón Ara
- Department of Neurology, Hospital Universitario Miguel Servet, Zaragoza, Spain
| | - Dionisio F. Uría
- Department of Neurology, Hospital Universitario de Cabueñes, Gijón, Spain
| | | | | | - Celia Oreja-Guevara
- Department of Neurology, Hospital Universitario Clínico San Carlos, Madrid, Spain
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Silverstein SM, Choi JJ, Green KM, Bowles-Johnson KE, Ramchandran RS. Schizophrenia in Translation: Why the Eye? Schizophr Bull 2022; 48:728-737. [PMID: 35640030 PMCID: PMC9212100 DOI: 10.1093/schbul/sbac050] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Schizophrenia is increasingly recognized as a systemic disease, characterized by dysregulation in multiple physiological systems (eg, neural, cardiovascular, endocrine). Many of these changes are observed as early as the first psychotic episode, and in people at high risk for the disorder. Expanding the search for biomarkers of schizophrenia beyond genes, blood, and brain may allow for inexpensive, noninvasive, and objective markers of diagnosis, phenotype, treatment response, and prognosis. Several anatomic and physiologic aspects of the eye have shown promise as biomarkers of brain health in a range of neurological disorders, and of heart, kidney, endocrine, and other impairments in other medical conditions. In schizophrenia, thinning and volume loss in retinal neural layers have been observed, and are associated with illness progression, brain volume loss, and cognitive impairment. Retinal microvascular changes have also been observed. Abnormal pupil responses and corneal nerve disintegration are related to aspects of brain function and structure in schizophrenia. In addition, studying the eye can inform about emerging cardiovascular, neuroinflammatory, and metabolic diseases in people with early psychosis, and about the causes of several of the visual changes observed in the disorder. Application of the methods of oculomics, or eye-based biomarkers of non-ophthalmological pathology, to the treatment and study of schizophrenia has the potential to provide tools for patient monitoring and data-driven prediction, as well as for clarifying pathophysiology and course of illness. Given their demonstrated utility in neuropsychiatry, we recommend greater adoption of these tools for schizophrenia research and patient care.
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Affiliation(s)
- Steven M Silverstein
- To whom correspondence should be addressed; Department of Psychiatry, University of Rochester Medical Center, Rochester, NY 14642, USA; tel: +1 585-275-6742, e-mail:
| | - Joy J Choi
- Department of Psychiatry, University of Rochester Medical Center, Rochester, NY, USA
| | - Kyle M Green
- Department of Ophthalmology, University of Rochester Medical Center, Rochester, NY, USA
| | | | - Rajeev S Ramchandran
- Department of Ophthalmology, University of Rochester Medical Center, Rochester, NY, USA,Department of Public Health Sciences, University of Rochester Medical Center, Rochester, NY, USA
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Deschamps R, Shor N, Vignal C, Guillaume J, Boudot de la Motte M, Salviat F, Lecler A, Marignier R, Hage R, Coulette S, Bidot S, Gueguen A, Mauget-Faÿsse M, Bensa C, Vasseur V, Gout O, Lamirel C. A prospective longitudinal study on prognostic factors of visual recovery and structural change after a first episode of optic neuritis. Eur J Neurol 2022; 29:2781-2791. [PMID: 35617154 DOI: 10.1111/ene.15420] [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: 03/02/2022] [Accepted: 05/18/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND To determine the role of OCT in predicting the final visual and structural outcome, and evaluate the correlation between functional eye outcome and retinal changes, in patients with first episode of optic neuritis (ON). METHODS In this prospective study, consecutive adult patients with acute ON underwent ophthalmological evaluation at baseline and 1 and 12 months, including OCT measurements of peripapillary retinal nerve fiber layer (pRNFL), macular ganglion cell and innerplexiform layer, and innernuclear layer thicknesses, high- and low-contrast visual acuity, visual field assessment, and baseline brain MRI. Univariate and multivariate linear regressions were used to assess predictive factors of outcome. Correlations between 12-month visual function and retinal structure were estimated by Spearman coefficients. Two groups of patients were analysed, with or without multiple sclerosis (MS). RESULTS Among 116 patients, 79 (68.1%) had MS, and 37 (31.9%) had ON not related to MS (including 19 idiopathic (i.e isolated) ON, and 13 and 5 with myelin oligodendrocyte glycoprotein and aquaporin-4 antibodies, respectively). We found no independent predictive factor of visual and retinal outcome. Analysis of the relationship between the visual field test (mean deviation) and pRNFL thickness demonstrated a threshold of 75.4 μm and 66.4 μm, below which the mean deviation was worse, for patients with MS (p=0.007) and without MS (p<0.001), respectively. CONCLUSIONS We found that inner retinal layer measurements during the first month are not predictive of final outcome. The critical threshold of axonal integrity, below which visual function is damaged, is different between patients with and without MS.
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Affiliation(s)
- Romain Deschamps
- Department of Neurology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Natalia Shor
- Department of Radiology, Hôpital Fondation Adolphe de Rothschild, Paris, France.,Department of Neuro-Radiology, Assistance Publique Hôpitaux de Paris, Hôpitaux Universitaires La Pitié Salpêtrière - Sorbonne Université, Paris, France
| | - Catherine Vignal
- Department of Neuro-Ophthalmology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Jessica Guillaume
- Clinical Research Department, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | | | - Flore Salviat
- Clinical Research Department, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Augustin Lecler
- Department of Radiology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Romain Marignier
- Department of Neurology and Centre de Référence des Maladies Inflammatoires Rares du Cerveau et de la Moelle, Hospices civils de Lyon, Hôpital neurologique Pierre Wertheimer, Lyon/Bron, France
| | - Rabih Hage
- Department of Neuro-Ophthalmology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Sarah Coulette
- Department of Neurology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Samuel Bidot
- Department of Neuro-Ophthalmology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Antoine Gueguen
- Department of Neurology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Martine Mauget-Faÿsse
- Clinical Research Department, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Caroline Bensa
- Department of Neurology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Vivien Vasseur
- Clinical Research Department, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Olivier Gout
- Department of Neurology, Hôpital Fondation Adolphe de Rothschild, Paris, France
| | - Cedric Lamirel
- Department of Neuro-Ophthalmology, Hôpital Fondation Adolphe de Rothschild, Paris, France
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21
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[Optical coherence tomography in the differential diagnostics of important neuro-ophthalmological disease patterns]. DER NERVENARZT 2022; 93:629-642. [PMID: 35612648 DOI: 10.1007/s00115-022-01302-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 04/27/2022] [Indexed: 10/18/2022]
Abstract
There are many disease patterns that are treated jointly by neurologists and ophthalmologists, for which optical coherence tomography (OCT) is of important differential diagnostic significance. In this context neurologists are mainly confronted by two patient collectives: patients with an acute ischemic event, who present with an acute but painless monocular visual deterioration (for central retinal artery occlusion) or with a monocular visual field defect (for arterial branch occlusion or anterior ischemic optic neuropathy). The second collective is patients without ophthalmological symptoms but with conspicuous optic nerve findings (papilledema or optic disc drusen). In this overview article both patient collectives are considered separately. In addition, the most important OCT findings for optic neuritis are presented. Before the disease patterns are described in detail, the normal OCT findings and the diagnostic possibilities of OCT are explained.
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22
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Characterization of Macular Structural and Microvascular Changes in Thalamic Infarction Patients: A Swept-Source Optical Coherence Tomography-Angiography Study. Brain Sci 2022; 12:brainsci12050518. [PMID: 35624906 PMCID: PMC9139152 DOI: 10.3390/brainsci12050518] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 04/02/2022] [Accepted: 04/17/2022] [Indexed: 02/05/2023] Open
Abstract
Background: The retina and brain share similar neuronal and microvascular features. We aimed to investigate the retinal thickness and microvasculature in patients with thalamic infarcts compared with control participants. Material and methods: Swept-source optical coherence tomography (SS-OCT) was used to image the macular thickness (retinal nerve fiber layer, RNFL; ganglion cell-inner plexiform layer, GCIP), while OCT angiography was used to image the microvasculature (superficial vascular plexus, SVP; intermediate capillary plexus, ICP; deep capillary plexus, DCP). Inbuilt software was used to measure the macular thickness (µm) and microvascular density (%). Lesion volumes were quantitively assessed based on structural magnetic resonance images. Results: A total of 35 patients with unilateral thalamic infarction and 31 age−sex-matched controls were enrolled. Compared with control participants, thalamic infarction patients showed a significantly thinner thickness of RNFL (p < 0.01) and GCIP (p = 0.02), and a lower density of SVP (p = 0.001) and ICP (p = 0.022). In the group of patients, ipsilateral eyes showed significant reductions in SVP (p = 0.033), RNFL (p = 0.01) and GCIP (p = 0.043). When divided into three groups based on disease duration (<1 month, 1−6 months, and >6 months), no significant differences were found among these groups. After adjusting for confounders, SVP, ICP, DCP, RNFL, and GCIP were significantly correlated with lesion volume in patients. Conclusions: Thalamic infarction patients showed significant macular structure and microvasculature changes. Lesion size was significantly correlated with these alterations. These findings may be useful for further research into the clinical utility of retinal imaging in stroke patients, especially those with damage to the visual pathway.
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23
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Marenna S, Huang SC, Dalla Costa G, d’Isa R, Castoldi V, Rossi E, Comi G, Leocani L. Visual Evoked Potentials to Monitor Myelin Cuprizone-Induced Functional Changes. Front Neurosci 2022; 16:820155. [PMID: 35495042 PMCID: PMC9051229 DOI: 10.3389/fnins.2022.820155] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 03/07/2022] [Indexed: 11/17/2022] Open
Abstract
The visual system is one of the most accessible routes to study the central nervous system under pathological conditions, such as in multiple sclerosis (MS). Non-invasive visual evoked potential (VEP) and optical coherence tomography (OCT) were used to assess visual function and neuroretinal thickness in C57BL/6 taking 0.2% cuprizone for 7 weeks and at 5, 8, 12, and 15 days after returning to a normal diet. VEPs were significantly delayed starting from 4 weeks on cuprizone, with progressive recovery off cuprizone, becoming significant at day 8, complete at day 15. In contrast, OCT and neurofilament staining showed no significant axonal thinning. Optic nerve histology indicated that whilst there was significant myelin loss at 7 weeks on the cuprizone diet compared with healthy mice, at 15 days off cuprizone diet demyelination was significantly less severe. The number of Iba 1+ cells was found increased in cuprizone mice at 7 weeks on and 15 days off cuprizone. The combined use of VEPs and OCT allowed us to characterize non-invasively, in vivo, the functional and structural changes associated with demyelination and remyelination in a preclinical model of MS. This approach contributes to the non-invasive study of possible effective treatments to promote remyelination in demyelinating pathologies.
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Affiliation(s)
- Silvia Marenna
- Experimental Neurophysiology Unit, Institute of Experimental Neurology (INSPE), IRCCS-Scientific Institute San Raffaele, Milan, Italy
| | - Su-Chun Huang
- Experimental Neurophysiology Unit, Institute of Experimental Neurology (INSPE), IRCCS-Scientific Institute San Raffaele, Milan, Italy
| | - Gloria Dalla Costa
- Experimental Neurophysiology Unit, Institute of Experimental Neurology (INSPE), IRCCS-Scientific Institute San Raffaele, Milan, Italy
- Faculty of Medicine, Vita-Salute San Raffaele University, Milan, Italy
| | - Raffaele d’Isa
- Experimental Neurophysiology Unit, Institute of Experimental Neurology (INSPE), IRCCS-Scientific Institute San Raffaele, Milan, Italy
| | - Valerio Castoldi
- Experimental Neurophysiology Unit, Institute of Experimental Neurology (INSPE), IRCCS-Scientific Institute San Raffaele, Milan, Italy
| | - Elena Rossi
- Experimental Neurophysiology Unit, Institute of Experimental Neurology (INSPE), IRCCS-Scientific Institute San Raffaele, Milan, Italy
| | - Giancarlo Comi
- Faculty of Medicine, Vita-Salute San Raffaele University, Milan, Italy
- Casa di Cura Privata del Policlinico, Milan, Italy
| | - Letizia Leocani
- Experimental Neurophysiology Unit, Institute of Experimental Neurology (INSPE), IRCCS-Scientific Institute San Raffaele, Milan, Italy
- Faculty of Medicine, Vita-Salute San Raffaele University, Milan, Italy
- *Correspondence: Letizia Leocani,
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24
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Comparison of Machine Learning Methods Using Spectralis OCT for Diagnosis and Disability Progression Prognosis in Multiple Sclerosis. Ann Biomed Eng 2022; 50:507-528. [PMID: 35220529 PMCID: PMC9001622 DOI: 10.1007/s10439-022-02930-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 02/10/2022] [Indexed: 12/28/2022]
Abstract
Machine learning approaches in diagnosis and prognosis of multiple sclerosis (MS) were analysed using retinal nerve fiber layer (RNFL) thickness, measured by optical coherence tomography (OCT). A cross-sectional study (72 MS patients and 30 healthy controls) was used for diagnosis. These 72 MS patients were involved in a 10-year longitudinal follow-up study for prognostic purposes. Structural measurements of RNFL thickness were performed using different Spectralis OCT protocols: fast macular thickness protocol to measure macular RNFL, and fast RNFL thickness protocol and fast RNFL-N thickness protocol to measure peripapillary RNFL. Binary classifiers such as multiple linear regression (MLR), support vector machines (SVM), decision tree (DT), k-nearest neighbours (k-NN), Naïve Bayes (NB), ensemble classifier (EC) and long short-term memory (LSTM) recurrent neural network were tested. For MS diagnosis, the best acquisition protocol was fast macular thickness protocol using k-NN (accuracy: 95.8%; sensitivity: 94.4%; specificity: 97.2%; precision: 97.1%; AUC: 0.958). For MS prognosis, our model with a 3-year follow up to predict disability progression 8 years later was the best predictive model. DT performed best for fast macular thickness protocol (accuracy: 91.3%; sensitivity: 90.0%; specificity: 92.5%; precision: 92.3%; AUC: 0.913) and SVM for fast RNFL-N thickness protocol (accuracy: 91.3%; sensitivity: 87.5%; specificity: 95.0%; precision: 94.6%; AUC: 0.913). This work concludes that measurements of RNFL thickness obtained with Spectralis OCT have a good ability to diagnose MS and to predict disability progression in MS patients. This machine learning approach would help clinicians to have valuable information.
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25
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Miscioscia A, Puthenparampil M, Miante S, Pengo M, Rinaldi F, Perini P, Gallo P. Retinal inner nuclear layer thinning is decreased and associates with the clinical outcome in ocrelizumab-treated primary progressive multiple sclerosis. J Neurol 2022; 269:5436-5442. [PMID: 35648233 PMCID: PMC9467948 DOI: 10.1007/s00415-022-11183-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 05/07/2022] [Accepted: 05/11/2022] [Indexed: 02/06/2023]
Abstract
BACKGROUND Ocrelizumab was found to decrease brain atrophy rate in primary progressive multiple sclerosis (PPMS), but no data are currently available on the effect of ocrelizumab on retinal layer thicknesses in the PPMS population. OBJECTIVE To assess retinal layer changes in ocrelizumab-treated PPMS and test their possible application as biomarkers of therapy response. METHODS 36 PPMS patients, treated with ocrelizumab for at least 6 months, and 39 sex- and age-matched healthy controls (HC) were included in a blind, longitudinal study. Spectrum-domain optical coherence tomography (SD-OCT) was performed at study entry (T0) and after 6 (T6) and 12 months (T12). At month 24 (T24), patients were divided into responders (no evidence of 1-year confirmed disability progression, 1y-CDP) and non-responders (evidence of 1y-CDP). RESULTS At T24, 23/36 (64%) patients were considered responders and 13/36 (36%) non-responders. At T0, peripapillary retinal nerve fiber layer (pRNFL) thickness, macular ganglion cell-inner plexiform layer (GCIPL) and inner retinal layer (IRL) volume were significantly lower in PPMS compared to HC (p = 0.001 for all comparisons). At T6 and T12, non-responders significantly differed in the inner nuclear layer (INL) thinning rate compared to responders (p = 0.005 at both time-points). CONCLUSIONS Ocrelizumab significantly slows down INL thinning rate in PPMS responders. The longitudinal analysis of retina layer changes by means of OCT may be a promising prognostic test, and merits further investigations.
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Affiliation(s)
- Alessandro Miscioscia
- Department of Neuroscience DNS, School of Medicine, University of Padua, Via Giustiniani, 5, 35128 Padua, Veneto Region Italy ,Multiple Sclerosis Centre, University Hospital of Padua, Padua, Veneto Region Italy
| | - Marco Puthenparampil
- Department of Neuroscience DNS, School of Medicine, University of Padua, Via Giustiniani, 5, 35128 Padua, Veneto Region Italy ,Multiple Sclerosis Centre, University Hospital of Padua, Padua, Veneto Region Italy
| | - Silvia Miante
- Department of Neuroscience DNS, School of Medicine, University of Padua, Via Giustiniani, 5, 35128 Padua, Veneto Region Italy ,Multiple Sclerosis Centre, University Hospital of Padua, Padua, Veneto Region Italy ,Present Address: Neurology Unit, Ospedale dell’Angelo, Mestre, Italy
| | - Marta Pengo
- Department of Neuroscience DNS, School of Medicine, University of Padua, Via Giustiniani, 5, 35128 Padua, Veneto Region Italy ,Multiple Sclerosis Centre, University Hospital of Padua, Padua, Veneto Region Italy ,Present Address: Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Francesca Rinaldi
- Multiple Sclerosis Centre, University Hospital of Padua, Padua, Veneto Region Italy
| | - Paola Perini
- Multiple Sclerosis Centre, University Hospital of Padua, Padua, Veneto Region Italy
| | - Paolo Gallo
- Department of Neuroscience DNS, School of Medicine, University of Padua, Via Giustiniani, 5, 35128 Padua, Veneto Region Italy ,Multiple Sclerosis Centre, University Hospital of Padua, Padua, Veneto Region Italy
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Retinal and Choriocapillary Vascular Changes in Early Stages of Multiple Sclerosis: A Prospective Study. J Clin Med 2021; 10:jcm10245756. [PMID: 34945052 PMCID: PMC8706461 DOI: 10.3390/jcm10245756] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 11/25/2021] [Accepted: 12/07/2021] [Indexed: 12/14/2022] Open
Abstract
Optical Coherence Tomography Angiography (OCTA) abnormalities occur in multiple sclerosis (MS) over the course of the disease. OCTA investigations at early MS stages are lacking. We aimed to investigate vessel density in macular and papillary regions over two years after an initial demyelinating event (IDE). Vessel density was analyzed in superficial, deep, choriocapillaris and radial peripapillary plexus at baseline, and after one and two years. We also evaluated structural OCT parameter changes of the ganglion cell complex (GCC) and retinal nerve fiber layer (RNFL). We evaluated 30 eyes from 15 IDE patients (7 females, 8 males, mean age 28.4 ± 9.6 years) and 30 eyes from 15 healthy controls. After 2 years, we reported in the IDE group a reduced vessel density in the superficial capillary plexus, deep capillary plexus and radial peripapillary capillary plexus with respect to the baseline (coeff. β = −2.779, p = 0.013; coeff. β = −4.055, p = 0.018 and coeff. β = −2.687, p ≤ 0.001; respectively), while GCC and RNFL thicknesses did not change. Vessel density reduction was not associated with an expanded disability status scale (EDSS) change, relapse occurrence or magnetic resonance imaging activity. The analysis of healthy controls did not reveal any impairment in OCT and OCTA parameters over 2 years of follow-up. Retinal vascular loss occurs in patients with an IDE independently from clinical and radiological disease activity. Retinal vessel density could represent a novel early biomarker to monitor the MS pathological burden.
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Piedrabuena R, Bittar M. Optical coherence tomography and visual evoked potential and its relationship with neurological disability in patients with relapsing-remitting multiple sclerosis. Mult Scler Relat Disord 2021; 57:103420. [PMID: 34906813 DOI: 10.1016/j.msard.2021.103420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/25/2021] [Accepted: 11/20/2021] [Indexed: 11/19/2022]
Abstract
INTRODUCTION To evaluate the relationship between retinal nerve fiber layer involvement and visual evoked potential with the neurological disability scale in relapsing remitting multiple sclerosis. METHODS Fifty-two patients diagnosed with relapsing-remitting multiple sclerosis were evaluated for the study. Optical coherence tomography (retinal nerve fiber layer or RNFL and macular volume or MV), pattern visual evoked potential or VEP (latency and P100 wave amplitude), and neurological disability scale (EDSS) were performed. A baseline evaluation was carried out and it was repeated after one year and two years. RESULTS The baseline values in the retinal nerve fiber layer were 82.5 (75-93.5), the latency and amplitude of the VEP of 116 (108-125.5) and 9 (7-11), respectively, while the EDSS was 2 (1.5-3). A correlation was found between higher EDSS with prolonged latency and decreased amplitude of the P100 wave. There was an association between a higher EDSS with the prolongation of the latency of the P100 wave and a longer time of evolution of MS. No relationship was found between EDSS and macular volume. A higher EDSS was associated with a significant decrease in RNFL. When the discriminative performance of disability was evaluated, the latency of the VEP presented an area under the curve of 0.79 (CI95% 0.67- 0.92), the amplitude of the VEP an area under the curve of 0.71 (CI95% 0.56 - 0.87) and RNFL a area under the curve of 0.76 (95% CI 0.62 - 0.90. When comparing RNFL, MV and PEV in eyes without and with previous optic neuritis with RNFL values of 88 (81-97) and 76 (71-81) (p 0.0007), MV of 246 (232-261) and 241 (229-251) (p 0.2541), PEV latency of 109 (105-117) and 125 (118-129) (p 0.0001), VEP amplitude of 9 (7-10) and 9 (7-11) (p 0.9391), respectively, which shows a statistically significant correlation between decrease in RNFL and prolongation of VEP latency in eyes with previous optic neuritis. In the 2-year follow-up there were no significant differences between the values of RNFL, VEP and EDSS. DISCUSSION In our study, a relationship was evidenced between retinal nerve fiber thickness, PEV and the degree of disability measured by EDSS in patients with relapsing MS - remissions in their baseline values. A lower RNFL thickness was correlated with prolonged latency and decreased amplitude in the PEV and was associated with a higher EDSS. This relationship was more significant in eyes with previous optic neuritis in terms of decreased RNFL thickness and prolongation of PEV latency. No significant differences were found in the 2-year follow-up in the measurements made.
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Affiliation(s)
| | - M Bittar
- Clinica de Ojos Reyes Giobellina, Córdoba, Argentina
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Triggianese P, Di Marino M, Nesi C, Greco E, Modica S, Chimenti MS, Conigliaro P, Mancino R, Nucci C, Cesareo M. Subclinical Signs of Retinal Involvement in Hereditary Angioedema. J Clin Med 2021; 10:jcm10225415. [PMID: 34830697 PMCID: PMC8618365 DOI: 10.3390/jcm10225415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/07/2021] [Accepted: 11/16/2021] [Indexed: 11/16/2022] Open
Abstract
To explore retinal abnormalities using spectral domain optical coherence tomography (SD-OCT) and OCT-angiography (OCT-A) in a highly selective cohort of patients with type I hereditary angioedema (HAE). This prospective case-control study included 40 type I HAE patients and 40 age-/sex-matched healthy subjects (HC). All participants underwent SD-OCT-scanning of retinal posterior pole (PP), peripapillary retinal nerve fiber layer (pRNFL), and optic nerve head (ONH). Superficial/deep capillary density was analyzed by OCT-A. A total of 80 eyes from 40 HAE and 40 eyes from HC were evaluated. The pRNFL was thicker in HAE than in HC in nasal superior (p < 0.0001) and temporal quadrants (p = 0.0005 left, p = 0.003 right). The ONH thickness in HAE patients was greater than in HC in the nasal (p = 0.008 left, p = 0.01 right), temporal (p = 0.0005 left, p = 0.003 right), temporal inferior (p = 0.007 left, p = 0.0008 right), and global (p = 0.005 left, p = 0.007 right) scans. Compared to HC, HAE showed a lower capillary density in both superficial (p = 0.001 left, p = 0.006 right) and deep (p = 0.008 left, p = 0.004 right) whole images, and superficial (p = 0.03 left) and deep parafoveal (p = 0.007 left, p = 0.005 right) areas. Our findings documented subclinical retinal abnormalities in type I HAE, supporting a potential role of the retinal assessment by SD-OCT/OCT-A as a useful tool in the comprehensive care of HAE patients.
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Affiliation(s)
- Paola Triggianese
- Rheumatology, Allergology and Clinical Immunology, Department of “Medicina dei Sistemi”, University of Rome Tor Vergata, 00173 Rome, Italy; (P.T.); (E.G.); (S.M.); (M.S.C.); (P.C.)
| | - Matteo Di Marino
- Ophthalmology Unit, Department of Experimental Medicine, University of Rome Tor Vergata, 00173 Rome, Italy; (C.N.); (R.M.); (C.N.); (M.C.)
- Correspondence: ; Tel.: +39-389-11-24-316
| | - Carolina Nesi
- Ophthalmology Unit, Department of Experimental Medicine, University of Rome Tor Vergata, 00173 Rome, Italy; (C.N.); (R.M.); (C.N.); (M.C.)
| | - Elisabetta Greco
- Rheumatology, Allergology and Clinical Immunology, Department of “Medicina dei Sistemi”, University of Rome Tor Vergata, 00173 Rome, Italy; (P.T.); (E.G.); (S.M.); (M.S.C.); (P.C.)
| | - Stella Modica
- Rheumatology, Allergology and Clinical Immunology, Department of “Medicina dei Sistemi”, University of Rome Tor Vergata, 00173 Rome, Italy; (P.T.); (E.G.); (S.M.); (M.S.C.); (P.C.)
| | - Maria Sole Chimenti
- Rheumatology, Allergology and Clinical Immunology, Department of “Medicina dei Sistemi”, University of Rome Tor Vergata, 00173 Rome, Italy; (P.T.); (E.G.); (S.M.); (M.S.C.); (P.C.)
| | - Paola Conigliaro
- Rheumatology, Allergology and Clinical Immunology, Department of “Medicina dei Sistemi”, University of Rome Tor Vergata, 00173 Rome, Italy; (P.T.); (E.G.); (S.M.); (M.S.C.); (P.C.)
| | - Raffaele Mancino
- Ophthalmology Unit, Department of Experimental Medicine, University of Rome Tor Vergata, 00173 Rome, Italy; (C.N.); (R.M.); (C.N.); (M.C.)
| | - Carlo Nucci
- Ophthalmology Unit, Department of Experimental Medicine, University of Rome Tor Vergata, 00173 Rome, Italy; (C.N.); (R.M.); (C.N.); (M.C.)
| | - Massimo Cesareo
- Ophthalmology Unit, Department of Experimental Medicine, University of Rome Tor Vergata, 00173 Rome, Italy; (C.N.); (R.M.); (C.N.); (M.C.)
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Barreiro-González A, Sanz MT, Carratalà-Boscà S, Pérez-Miralles F, Alcalá C, Carreres-Polo J, España-Gregori E, Casanova B. Design and Validation of an Expanded Disability Status Scale Model in Multiple Sclerosis. Eur Neurol 2021; 85:112-121. [PMID: 34788755 DOI: 10.1159/000519772] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 09/19/2021] [Indexed: 11/19/2022]
Abstract
INTRODUCTION We aimed to develop and validate an Expanded Disability Status Scale (EDSS) model through clinical, optical coherence tomography (OCT), and magnetic resonance imaging (MRI) measures. METHODS Sixty-four multiple sclerosis (MS) patients underwent peripapillary retinal nerve fiber layer and segmented macular layers evaluation through OCT (Spectralis, Heidelberg Engineering). Brain parenchymal fraction was quantified through Freesurfer, while cervical spinal cord (SC) volume was assessed manually guided by Spinal Cord Toolbox software analysis. EDSS, neuroradiological, and OCT assessment were carried out within 3 months. OCT parameters were calculated as the average of both nonoptic neuritis (ON) eyes, and in case the patient had previous ON, the value of the fellow non-ON eye was taken. Brain lesion volume, sex, age, disease duration, and history of disease-modifying treatment (1st or 2nd line disease-modifying treatments) were tested as covariables of the EDSS score. RESULTS EDSS values correlated with patient's age (r = 0.543, p = 0.001), SC volume (r = -0.301, p = 0.034), and ganglion cell layer (GCL, r = -0.354, p = 0.012). Using these correlations, an ordinal regression model to express probability of diverse EDSS scores were designed, the highest of which was the most probable (Nagelkerke R2 = 43.3%). Using EDSS cutoff point of 4.0 in a dichotomous model, compared to a cutoff of 2.0, permits the inclusion of GCL as a disability predictor, in addition to age and SC. CONCLUSIONS MS disability measured through EDSS is an age-dependent magnitude that is partly conditioned by SC and GCL. Further studies assessing paraclinical disability predictors are needed.
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Affiliation(s)
| | - Maria T Sanz
- Department of Mathematics Teaching, University of Valencia, Valencia, Spain
| | - Sara Carratalà-Boscà
- Neurology Department, University and Polytechnic Hospital La Fe, Valencia, Spain
| | | | - Carmen Alcalá
- Neurology Department, University and Polytechnic Hospital La Fe, Valencia, Spain
| | - Joan Carreres-Polo
- Radiology Department, University and Polytechnic Hospital La Fe, Valencia, Spain
| | - Enrique España-Gregori
- Opthalmology Department, University and Polytechnic Hospital La Fe, Valencia, Spain.,Surgery Department, University of Valencia, Valencia, Spain
| | - Bonaventura Casanova
- Neurology Department, University and Polytechnic Hospital La Fe, Valencia, Spain.,Medicine Department, University of Valencia, Valencia, Spain
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Al-Mujaini AS, Al-Mujaini MS, Sabt BI. Retinal nerve fiber layer thickness in multiple sclerosis with and without optic neuritis: a four-year follow-up study from Oman. BMC Ophthalmol 2021; 21:391. [PMID: 34772371 PMCID: PMC8588610 DOI: 10.1186/s12886-021-02158-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 10/26/2021] [Indexed: 01/16/2023] Open
Abstract
Background Multiple sclerosis (MS) is an autoimmune disease that attacks the central nervous system, with optic neuritis (ON) being a common early manifestation. Retinal nerve fiber layer (RNFL) thickness may be a biomarker of neuroaxonal damage in MS patients. We sought to evaluate changes in RNFL thickness over 4 years in Omani MS patients with or without ON in comparison to a healthy control group. Methods This retrospective case-control study involved 27 MS patients and 25 healthy controls. Optical coherence tomography was performed upon first diagnosis and at a four-year follow-up. Differences in mean RNFL thickness were calculated. Results A total of 51 eyes from the MS group and 50 eyes from the control group were evaluated. There was a significant reduction in mean RNFL thickness among MS patients with ON at follow-up (81.21 versus 72.14 μm; P = .003), whereas no significant RNFL thinning was observed among MS patients without ON. However, there was a significant reduction in RNFL thickness among MS patients compared to healthy controls (76.79 versus 93.72 μm; P = .009), regardless of ON presence/absence. Conclusions Axonal damage was seen in the optic nerves of Omani MS patients. Moreover, there was a significant reduction in RNFL thickness among MS patients with ON as the disease progressed; however, while there was evidence of RNFL thinning in MS patients without ON, this difference lacked statistical significance. Evaluation of RNFL thickness may represent a useful biomarker for monitoring disease progression in MS and its association with ON.
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Affiliation(s)
- Abdullah S Al-Mujaini
- Department of Ophthalmology, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman. .,College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman.
| | - Maiysa S Al-Mujaini
- Department of Ophthalmology, Sultan Qaboos University Hospital, Muscat, Oman
| | - Buthaina I Sabt
- College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman.,Department of Ophthalmology, Sultan Qaboos University Hospital, Muscat, Oman
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Chen Q, Fang M, Miri S, Thakor K, Delgado S, Hernandez J, Alba DE, Gregori G, Porciatti V, Wang J, Jiang H. Retinal microvascular and neuronal function in patients with multiple sclerosis: 2-year follow-up. Mult Scler Relat Disord 2021; 56:103314. [PMID: 34634624 DOI: 10.1016/j.msard.2021.103314] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 09/11/2021] [Accepted: 10/03/2021] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To determine the longitudinal changes in retinal microstructure, microvasculature, microcirculation, and axonal and neuronal functions in patients with relapsing-remitting multiple sclerosis (RRMS) over the time course of about two years. METHODS A total of 30 patients (60 eyes) with RRMS were followed for a period of 27 ± 6 months and evaluated with a battery of clinical tests including low contrast letter acuity (LCLA), intraretinal layer thicknesses by optical coherence tomography (OCT), ganglion cell function by steady-state pattern electroretinography (PERG), axonal function by polarization-sensitive OCT, volumetric vessel density (VVD) by OCT angiography, and retinal tissue perfusion (RTP) by retinal function imager. RESULTS Axonal function measured as retinal nerve fiber layer birefringence in the temporal quadrant and vessel density in the deep vascular plexus were significantly decreased at 2-year follow-up (P < 0.05). Subgroup analyses showed that the increased retinal blood flow volume occurred in patients with no evidence of disease activity (NEDA), and with stable or improved visual function (P < 0.05). There was no significant difference in the expanded disability state scale, LCLA, RTP, VVD, or PERG measures between the two visits (P > 0.05). CONCLUSION To our best knowledge, this is the first 2-year prospective comprehensive study with a detailed assessment of retinal microstructure and neuronal functions in patients with RRMS. The recovery of retinal microcirculation occurred in patients with NEDA, and stable or improved visual function, suggesting these measurements as potential imaging biomarkers for monitoring disease progression.
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Affiliation(s)
- Qi Chen
- School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, China; Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Min Fang
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, United States; Shenzhen Key Laboratory of Ophthalmology, Shenzhen Eye Hospital, Jinan University, Shenzhen, China
| | - Shahnaz Miri
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Kinjal Thakor
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Silvia Delgado
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Jeffrey Hernandez
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Diego Eduardo Alba
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Giovanni Gregori
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Vittorio Porciatti
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Jianhua Wang
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Hong Jiang
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, United States; Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, United States.
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Siger M, Owidzka M, Świderek-Matysiak M, Omulecki W, Stasiołek M. Optical Coherence Tomography in the Differential Diagnosis of Patients with Multiple Sclerosis and Patients with MRI Nonspecific White Matter Lesions. SENSORS 2021; 21:s21217127. [PMID: 34770434 PMCID: PMC8588219 DOI: 10.3390/s21217127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 10/18/2021] [Accepted: 10/21/2021] [Indexed: 11/16/2022]
Abstract
In the differential diagnosis of nonspecific white matter lesions (NSWMLs) detected on magnetic resonance imaging (MRI), multiple sclerosis (MS) should be taken into consideration. Optical coherence tomography (OCT) is a promising tool applied in the differential diagnostic process of MS. We tested whether OCT may be useful in distinguishing between MS and NSWMLs patients. In patients with MS (n = 41) and NSWMLs (n = 19), the following OCT parameters were measured: thickness of the peripapillary Retinal Nerve Fibre Layer (pRNFL) in superior, inferior, nasal, and temporal segments; thickness of the ganglion cell-inner plexiform layer (GCIPL); thickness of macular RNFL (mRNFL); and macular volume (MV). In MS patients, GCIPL was significantly lower than in NSWMLs patients (p = 0.024). Additionally, in MS patients, mRNFL was significantly lower than in NSWMLs patients (p = 0.030). The average segmental pRNFL and MV did not differ between MS and NSWMLs patients (p > 0.05). GCIPL and macular RNFL thinning significantly influenced the risk of MS (18.6% [95% CI 2.7%, 25.3%]; 27.4% [95% CI 4.5%, 62.3%]), and reduced GCIPL thickness appeared to be the best predictor of MS. We conclude that OCT may be helpful in the differential diagnosis of MS and NSWMLs patients in real-world settings.
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Affiliation(s)
- Małgorzata Siger
- Department of Neurology, Medical University of Lodz, 90-419 Lodz, Poland; (M.Ś.-M.); (M.S.)
- Correspondence:
| | - Marta Owidzka
- Department of Eye Disease, Medical University of Lodz, 90-419 Lodz, Poland; (M.O.); (W.O.)
| | | | - Wojciech Omulecki
- Department of Eye Disease, Medical University of Lodz, 90-419 Lodz, Poland; (M.O.); (W.O.)
| | - Mariusz Stasiołek
- Department of Neurology, Medical University of Lodz, 90-419 Lodz, Poland; (M.Ś.-M.); (M.S.)
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Guerrieri S, Comi G, Leocani L. Optical Coherence Tomography and Visual Evoked Potentials as Prognostic and Monitoring Tools in Progressive Multiple Sclerosis. Front Neurosci 2021; 15:692599. [PMID: 34421520 PMCID: PMC8374170 DOI: 10.3389/fnins.2021.692599] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 06/07/2021] [Indexed: 11/13/2022] Open
Abstract
Understanding the mechanisms underlying progression and developing new treatments for progressive multiple sclerosis (PMS) are among the major challenges in the field of central nervous system (CNS) demyelinating diseases. Over the last 10 years, also because of some technological advances, the visual pathways have emerged as a useful platform to study the processes of demyelination/remyelination and their relationship with axonal degeneration/protection. The wider availability and technological advances in optical coherence tomography (OCT) have allowed to add information on structural neuroretinal changes, in addition to functional information provided by visual evoked potentials (VEPs). The present review will address the role of the visual pathway as a platform to assess functional and structural damage in MS, focusing in particular on the role of VEPs and OCT, alone or in combination, in the prognosis and monitoring of PMS.
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Affiliation(s)
- Simone Guerrieri
- Experimental Neurophysiology Unit, San Raffaele Hospital, Institute of Experimental Neurology (INSPE), Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy
| | - Giancarlo Comi
- Vita-Salute San Raffaele University, Milan, Italy.,Casa di Cura del Policlinico, Milan, Italy
| | - Letizia Leocani
- Experimental Neurophysiology Unit, San Raffaele Hospital, Institute of Experimental Neurology (INSPE), Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy
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Işik MU, Akay F, Akmaz B, Güven YZ, Şahin ÖF. Evaluation of subclinical alterations in retinal layers and microvascular structures with OCT and OCTA in healthy young short-term smokers. Photodiagnosis Photodyn Ther 2021; 36:102482. [PMID: 34390879 DOI: 10.1016/j.pdpdt.2021.102482] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 08/02/2021] [Accepted: 08/09/2021] [Indexed: 11/26/2022]
Abstract
PURPOSE To detect the changes that can be determined with optical coherence tomography (OCT) and optical coherence tomography angiography (OCTA) in young and short-term smokers. METHOD In this cross-sectional, observational, and comparative study, 45 "healthy" smokers and 45 healthy non-smoker control participants were included. Those with a smoking history between 1 year to 5 years and an average of 10-30 cigarettes per day were included in the study. OCT and OCTA measurements were made at least 60 min after smoking and at least 8 h after caffeine-containing beverages in order to end the effect of nicotine on systemic and retinal blood flow in the smoking group. RESULTS The mean smoking period was 2.2 ± 0.13 years. Mean macular thickness(MMT), retinal nerve fiber layer(RNFL), and choroidal thickness(Cht) were significantly lower in the smoker group, while ganglion cell-inner plexiform layer(GC-IPL) thickness was higher. Vessel density(VD) values were similar between groups, while perfusion density(PD) values were significantly higher in the smoker group. There were significant correlations between MMT and outer VD, outer PD, foveal avascular zone(FAZ) perimeter and circularity index. FAZ area and central VD and PD were inversely correlated. Also, FAZ circularity index and subfoveal, nasal, and temporal ChTs were positively correlated. CONCLUSION Despite the short-term smoking, ischemic effects were observed in retinochoroidal and vascular structures.
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Affiliation(s)
- Mehmed Uğur Işik
- Kastamonu University Faculty of Medicine, Department of Ophthalmology, Kastamonu, Turkey.
| | - Fahrettin Akay
- Katip Çelebi University Atatürk Educating and Research Hospital, Department of Ophthalmology, İzmir, Turkey
| | - Berkay Akmaz
- Katip Çelebi University Atatürk Educating and Research Hospital, Department of Ophthalmology, İzmir, Turkey
| | - Yusuf Ziya Güven
- Katip Çelebi University Atatürk Educating and Research Hospital, Department of Ophthalmology, İzmir, Turkey
| | - Ömer Faruk Şahin
- Etimesgut State Hospital, Department of Ophthalmology, Ankara, Turkey
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Neuroaxonal Degeneration in Patients With Multiple Sclerosis: An Optical Coherence Tomography and in Vivo Corneal Confocal Microscopy Study. Cornea 2021; 39:1221-1226. [PMID: 32732697 DOI: 10.1097/ico.0000000000002396] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE To investigate the effect of multiple sclerosis (MS) on corneal and retinal nerve fiber by quantifying corneal subbasal nerve fibers and retinal ganglion cells. METHODS A total of 46 eyes of 23 patients with MS and 42 eyes of 21 healthy subjects were included in the study. All patients and healthy subjects underwent a comprehensive ocular examination. In vivo confocal microscopy with Heidelberg Retina Tomograph in association with Rostock Cornea Module (Heidelberg Engineering, Heidelberg, Germany) and a swept-source optical coherence tomography (Topcon Corporation) were performed in all patients and healthy subjects. The number of subbasal nerve fibers and the nerve fiber density were calculated. Student t test was used to compare eyes with MS with control eyes. The normal distribution was first confirmed with the Shapiro-Wilk test. RESULTS A statistically significant (P < 0.05) decrease was found for nerve fiber number, ganglion cell-inner plexiform layer, and retinal nerve fiber layer in patients with MS compared with those of healthy subjects. Moreover, an inverse correlation was found between retinal nerve fiber layer (r = -0.32), nerve fiber number (r = -0.47), and ganglion cell-inner plexiform layer (r = -0.51) and Expanded Disability Status Scale. A direct correlation between Expanded Disability Status Scale and optic neuritis frequency was found (r = 0.322). CONCLUSIONS In vivo confocal microscopy showed a difference in corneal morphological parameters and retinal damage; moreover, these changes seemed to be related to the degree of neurological disability. Both retinal ganglion and trigeminal cell atrophy measurements could become affordable and accessible biomarkers for clinical trials in progressive disease.
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Rzepiński Ł, Kucharczuk J, Maciejek Z, Grzybowski A, Parisi V. Spectral-Domain Optical Coherence Tomography Assessment in Treatment-Naïve Patients with Clinically Isolated Syndrome and Different Multiple Sclerosis Types: Findings and Relationship with the Disability Status. J Clin Med 2021; 10:jcm10132892. [PMID: 34209692 PMCID: PMC8268329 DOI: 10.3390/jcm10132892] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 06/25/2021] [Accepted: 06/26/2021] [Indexed: 01/08/2023] Open
Abstract
This study evaluates the peripapillary retinal nerve fiber layer (pRNFL) thickness and total macular volume (TMV) using spectral-domain optical coherence tomography in treatment naïve patients with the clinically isolated syndrome (CIS) and different multiple sclerosis (MS) types. A total of 126 patients (15 CIS, 65 relapsing-remitting MS, 14 secondary progressive MS, 11 primary progressive MS, 21 benign MS) with or without optic neuritis (ON) history and 63 healthy age-similar controls were assessed. Concerning controls' eyes, pRNFL thickness was significantly reduced in CIS-ON eyes (p < 0.01), while both TMV and pRNFL thickness was decreased in all MS eyes regardless of ON history (p < 0.01). Significant differences in pRNFL thickness and TMV between MS variants were observed for non-ON eyes (p < 0.01), with the lowest values in benign and secondary progressive disease type, respectively. The pRNFL thickness was inversely correlated with Expanded Disability Status Scale (EDSS) score in non-ON subgroups (p < 0.01), whereas TMV was inversely correlated with EDSS score in both ON and non-ON subgroups (p < 0.01). Concluding, pRNFL thinning confirms optic nerve damage in CIS-ON eyes and appears to be disproportionately high with respect to the disability status of benign MS patients. The values of TMV and pRNFL in non-ON eyes significantly correspond to MS course heterogeneity and patients' disability than in ON eyes.
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Affiliation(s)
- Łukasz Rzepiński
- Department of Neurology, 10th Military Research Hospital and Polyclinic, Powstańców Warszawy 5, 85-681 Bydgoszcz, Poland;
- Neurology Department, Sanitas—Neurology Outpatient Clinic, Dworcowa 110, 85-010 Bydgoszcz, Poland
- Correspondence:
| | - Jan Kucharczuk
- Department of Ophthalmology, 10th Military Research Hospital and Polyclinic, Powstańców Warszawy 5, 85-681 Bydgoszcz, Poland;
| | - Zdzisław Maciejek
- Department of Neurology, 10th Military Research Hospital and Polyclinic, Powstańców Warszawy 5, 85-681 Bydgoszcz, Poland;
- Neurology Department, Sanitas—Neurology Outpatient Clinic, Dworcowa 110, 85-010 Bydgoszcz, Poland
| | - Andrzej Grzybowski
- Department of Ophthalmology, University of Warmia and Mazury, Żołnierska 18, 10-561 Olsztyn, Poland;
- Institute for Research in Ophthalmology, Foundation for Ophthalmology Development, Mickiewicza 24/3B, 60-836 Poznan, Poland
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Abstract
Many groundbreaking advances have occurred in the field of multiple sclerosis since this series last reviewed the disorder in 2014. The U.S. Food and Drug Administration has approved 7 new medications for relapsing-remitting multiple sclerosis and approved the first medication for primary progressive multiple sclerosis. The McDonald criteria for diagnosing multiple sclerosis were updated in 2017. New blood tests can now differentiate patients with multiple sclerosis from those with neuromyelitis optica spectrum disorder, and 3 new medications have been approved specifically for the latter disorder. Also, new medications for treating the symptoms of multiple sclerosis have been introduced.
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Para-Prieto M, Martin R, Crespo S, Mena-Garcia L, Valisena A, Cordero L, Gonzalez Fernandez G, Arenillas JF, Tellez N, Pastor JC. OCT Variability Prevents Their Use as Robust Biomarkers in Multiple Sclerosis. Clin Ophthalmol 2021; 15:2025-2036. [PMID: 34025119 PMCID: PMC8132465 DOI: 10.2147/opth.s309703] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 04/08/2021] [Indexed: 11/23/2022] Open
Abstract
Objective To evaluate the agreement between the peripapillary retinal nerve fiber layer (pRNFL) and foveal thickness (FT) measurements among three different spectral domain-optical coherence tomography (SD-OCT) instruments in a sample of multiple sclerosis (MS) patients and a healthy age-matched control group. Methods An observational cross-sectional study with three groups: healthy subjects and MS patients w/w a previous clinical diagnosis of optic neuritis (ON) was conducted. The pRNFL and FT were measured using three different SD-OCT instruments (OCT PRIMUS 200 and OCT CIRRUS 500 SD-OCT [Carl Zeiss Meditec] and OCT 3D 2000 [Topcon]). Results Twenty eyes from 10 healthy subjects matched in age with MS patients without a previous history of eye disease and 62 MS eyes from 31 MS patients (29 eyes without history of ON and 33 eyes with history of ON) were enrolled. Healthy subjects and MS patients without ON did not show differences between the pRNFL and FT thickness (P>0.99) with any of the instruments. However, MS eyes with a previous episode of ON showed thinner pRNFL and FT (P<0.01). PRIMUS and CIRRUS OCT showed better agreement of the pRNLF and FT in both healthy and MS eyes. However, 3D OCT showed less agreement in the pRNFL measurement with CIRRUS in both healthy and MS eyes. Interpretation Although OCT is a valuable technology to improve MS patient assessment, differences between devices must be taken into account. It is necessary to create an international group that standardizes the measurement conditions and above all that provides reference bases for normal subjects.
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Affiliation(s)
- Marta Para-Prieto
- Universidad de Valladolid, Instituto Universitario de Oftalmobiología Aplicada (IOBA Eye Institute), Valladolid, 47011, Spain.,Hospital Clínico Universitario, Department of Ophthalmology, Valladolid, 47005, Spain
| | - Raul Martin
- Universidad de Valladolid, Instituto Universitario de Oftalmobiología Aplicada (IOBA Eye Institute), Valladolid, 47011, Spain.,Universidad de Valladolid, Departamento de Física Teórica, Atómica y Óptica, Valladolid, 47011, Spain.,Plymouth University, Faculty of Health and Human Sciences, Plymouth, UK
| | - Sara Crespo
- Hospital Clínico Universitario, Department of Ophthalmology, Valladolid, 47005, Spain
| | - Laura Mena-Garcia
- Universidad de Valladolid, Instituto Universitario de Oftalmobiología Aplicada (IOBA Eye Institute), Valladolid, 47011, Spain
| | - Andres Valisena
- Hospital Clínico Universitario, Department of Ophthalmology, Valladolid, 47005, Spain
| | - Lisandro Cordero
- Universidad de Valladolid, Instituto Universitario de Oftalmobiología Aplicada (IOBA Eye Institute), Valladolid, 47011, Spain
| | | | - Juan F Arenillas
- Hospital Clínico Universitario, Department of Neurology, Valladolid, 47005, Spain
| | - Nieves Tellez
- Hospital Clínico Universitario, Department of Neurology, Valladolid, 47005, Spain
| | - Jose Carlos Pastor
- Universidad de Valladolid, Instituto Universitario de Oftalmobiología Aplicada (IOBA Eye Institute), Valladolid, 47011, Spain.,Hospital Clínico Universitario, Department of Ophthalmology, Valladolid, 47005, Spain
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Gupta K, Reddy S. Heart, Eye, and Artificial Intelligence: A Review. Cardiol Res 2021; 12:132-139. [PMID: 34046105 PMCID: PMC8139752 DOI: 10.14740/cr1179] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Accepted: 11/12/2020] [Indexed: 12/30/2022] Open
Abstract
Heart disease continues to be the leading cause of death in the USA. Deep learning-based artificial intelligence (AI) methods have become increasingly common in studying the various factors involved in cardiovascular disease. The usage of retinal scanning techniques to diagnose retinal diseases, such as diabetic retinopathy, age-related macular degeneration, glaucoma and others, using fundus photographs and optical coherence tomography angiography (OCTA) has been extensively documented. Researchers are now looking to combine the power of AI with the non-invasive ease of retinal scanning to examine the workings of the heart and predict changes in the macrovasculature based on microvascular features and function. In this review, we summarize the current state of the field in using retinal imaging to diagnose cardiovascular issues and other diseases.
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Affiliation(s)
- Kush Gupta
- Kasturba Medical College, Mangalore, India
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40
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Meca-Lallana J, García-Merino JA, Martínez-Yélamos S, Vidal-Jordana A, Costa L, Eichau S, Rovira À, Brieva L, Agüera E, Zarranz ARA. Identification of patients with relapsing multiple sclerosis eligible for high-efficacy therapies. Neurodegener Dis Manag 2021; 11:251-261. [PMID: 33966475 DOI: 10.2217/nmt-2020-0049] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Relapsing multiple sclerosis (RMS) presents a highly variable clinical evolution among patients, and its management should be personalized. Although there is no cure at present, effective disease-modifying therapies (DMTs) are available. Selection of the most appropriate DMT for each patient is influenced by several clinical, radiological and demographic aspects as well as personal preferences that, at times, are not covered in the regulatory criteria. This may be a source of difficulty, especially in certain situations where so-called 'high-efficacy DMTs' (usually considered second-line) could be of greater benefit to the patient. In this narrative review, we discuss evidence and experience, and propose a pragmatic guidance on decision-making with respect to the indication and management of high-efficacy DMT in adult patients with RMS based on expert opinion.
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Affiliation(s)
- José Meca-Lallana
- Multiple Sclerosis CSUR, Neurology Department, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, 30120, Spain
| | | | - Sergio Martínez-Yélamos
- Neurology Department, Hospital Universitario de Bellvitge, L'Hospitalet de Llobregat, 08907, Spain
| | - Angela Vidal-Jordana
- Neurology-Neuroimmunology Department, Centre d'Esclerosi Múltiple de Catalunya (Cemcat), Hospital Universitario Vall d'Hebron, Barcelona, 08035, Spain
| | - Lucienne Costa
- CSUR de Esclerosis Múltiple, Neurology Department, Fundación para la Investigación Biomédica IRyCIS, Hospital Universitario Ramón y Cajal, Madrid, 28034, Spain
| | - Sara Eichau
- EM Unit, Neurology Department, Hospital Universitario Virgen de la Macarena, Seville, 41009, Spain
| | - Àlex Rovira
- Neuroradiology Section, Radiology Department, Hospital Universitario Vall d'Hebron, Barcelona, 08035, Spain
| | - Luis Brieva
- Neurology Section, Hospital Universitario Arnau de Vilanova, IRB Lleida, Lleida, 25198, Spain
| | - Eduardo Agüera
- Neurology department, Hospital Universitario Reina Sofía, Cordoba, 14004, Spain
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Currant H, Hysi P, Fitzgerald TW, Gharahkhani P, Bonnemaijer PWM, Senabouth A, Hewitt AW, Atan D, Aung T, Charng J, Choquet H, Craig J, Khaw PT, Klaver CCW, Kubo M, Ong JS, Pasquale LR, Reisman CA, Daniszewski M, Powell JE, Pébay A, Simcoe MJ, Thiadens AAHJ, van Duijn CM, Yazar S, Jorgenson E, MacGregor S, Hammond CJ, Mackey DA, Wiggs JL, Foster PJ, Patel PJ, Birney E, Khawaja AP. Genetic variation affects morphological retinal phenotypes extracted from UK Biobank optical coherence tomography images. PLoS Genet 2021; 17:e1009497. [PMID: 33979322 PMCID: PMC8143408 DOI: 10.1371/journal.pgen.1009497] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 05/24/2021] [Accepted: 03/18/2021] [Indexed: 12/15/2022] Open
Abstract
Optical Coherence Tomography (OCT) enables non-invasive imaging of the retina and is used to diagnose and manage ophthalmic diseases including glaucoma. We present the first large-scale genome-wide association study of inner retinal morphology using phenotypes derived from OCT images of 31,434 UK Biobank participants. We identify 46 loci associated with thickness of the retinal nerve fibre layer or ganglion cell inner plexiform layer. Only one of these loci has been associated with glaucoma, and despite its clear role as a biomarker for the disease, Mendelian randomisation does not support inner retinal thickness being on the same genetic causal pathway as glaucoma. We extracted overall retinal thickness at the fovea, representative of foveal hypoplasia, with which three of the 46 SNPs were associated. We additionally associate these three loci with visual acuity. In contrast to the Mendelian causes of severe foveal hypoplasia, our results suggest a spectrum of foveal hypoplasia, in part genetically determined, with consequences on visual function.
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Affiliation(s)
- Hannah Currant
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Cambridge, United Kingdom
| | - Pirro Hysi
- School of Life Course Sciences, Section of Ophthalmology, King’s College London, London, United Kingdom
- Department of Twin Research and Genetic Epidemiology, King’s College London, London, United Kingdom
| | - Tomas W. Fitzgerald
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Cambridge, United Kingdom
| | - Puya Gharahkhani
- Statistical Genetics, QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - Pieter W. M. Bonnemaijer
- Department of Ophthalmology, Erasmus MC, Rotterdam, The Netherlands
- Department of Epidemiology, Erasmus MC, Rotterdam, The Netherlands
- The Rotterdam Eye Hospital, Rotterdam, The Netherlands
| | - Anne Senabouth
- Garvan Weizmann Centre for Cellular Genomics, Garvan Institute of Medical Research, The Kinghorn Cancer Centre, Darlinghurst, Australia
| | - Alex W. Hewitt
- Menzies Institute for Medical Research, School of Medicine, University of Tasmania, Tasmania, Australia
- Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, Australia
| | | | | | - Denize Atan
- Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
- Bristol Eye Hospital, University Hospitals Bristol & Weston NHS Foundation Trust, Bristol, United Kingdom
| | - Tin Aung
- Singapore Eye Research Institute, Singapore National Eye Centre, Singapore
- Ophthalmology & Visual Sciences Academic Clinical Program, Duke-NUS Medical School, Singapore
- Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Jason Charng
- Centre for Ophthalmology and Visual Science, Lions Eye Institute, The University of Western Australia, Perth, Australia
| | - Hélène Choquet
- Kaiser Permanente Northern California Division of Research, Oakland, California, United States of America
| | - Jamie Craig
- Department of Ophthalmology, Flinders University, Flinders Medical Centre, Bedford Park, Australia
| | - Peng T. Khaw
- NIHR Biomedical Research Centre, Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, London, United Kingdom
| | - Caroline C. W. Klaver
- Department of Ophthalmology, Erasmus MC, Rotterdam, The Netherlands
- Department of Epidemiology, Erasmus MC, Rotterdam, The Netherlands
- Department of Ophthalmology Radboud University Medical Center, Nijmegen, The Netherlands
- Institute of Molecular and Clinical Ophthalmology, Basel, Switzerland
| | - Michiaki Kubo
- RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - Jue-Sheng Ong
- Statistical Genetics, QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - Louis R. Pasquale
- Eye and Vision Research Institute, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Charles A. Reisman
- Topcon Healthcare Solutions R&D, Oakland, New Jersey, United States of America
| | - Maciej Daniszewski
- Department of Anatomy and Physiology, The University of Melbourne, Parkville, Australia
| | - Joseph E. Powell
- Garvan Weizmann Centre for Cellular Genomics, Garvan Institute of Medical Research, The Kinghorn Cancer Centre, Darlinghurst, Australia
- UNSW Cellular Genomics Futures Institute, University of New South Wales, Sydney, Australia
| | - Alice Pébay
- Department of Anatomy and Physiology, The University of Melbourne, Parkville, Australia
- Department of Surgery, The University of Melbourne, Parkville, Australia
| | - Mark J. Simcoe
- Department of Ophthalmology, Kings College London, London, United Kingdom
- Institute of Ophthalmology, University College London, London, United Kingdom
| | | | - Cornelia M. van Duijn
- Nuffield Department Of Population Health, University of Oxford, Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, Oxford, United Kingdom
| | - Seyhan Yazar
- Garvan-Weizmann Centre for Single Cell Genomics, Garvan Institute of Medical Research, Sydney, Australia
| | - Eric Jorgenson
- Kaiser Permanente Northern California Division of Research, Oakland, California, United States of America
| | - Stuart MacGregor
- Statistical Genetics, QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - Chris J. Hammond
- School of Life Course Sciences, Section of Ophthalmology, King’s College London, London, United Kingdom
| | - David A. Mackey
- Centre for Ophthalmology and Visual Science, Lions Eye Institute, The University of Western Australia, Perth, Australia
| | - Janey L. Wiggs
- Department of Ophthalmology, Harvard Medical School, Massachusetts Eye and Ear, Boston, Massachusetts, United States of America
| | - Paul J. Foster
- NIHR Biomedical Research Centre, Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, London, United Kingdom
| | - Praveen J. Patel
- NIHR Biomedical Research Centre, Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, London, United Kingdom
| | - Ewan Birney
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Cambridge, United Kingdom
| | - Anthony P. Khawaja
- NIHR Biomedical Research Centre, Moorfields Eye Hospital NHS Foundation Trust and UCL Institute of Ophthalmology, London, United Kingdom
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Montolío A, Martín-Gallego A, Cegoñino J, Orduna E, Vilades E, Garcia-Martin E, Palomar APD. Machine learning in diagnosis and disability prediction of multiple sclerosis using optical coherence tomography. Comput Biol Med 2021; 133:104416. [PMID: 33946022 DOI: 10.1016/j.compbiomed.2021.104416] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 03/25/2021] [Accepted: 04/16/2021] [Indexed: 01/02/2023]
Abstract
BACKGROUND Multiple sclerosis (MS) is a neurodegenerative disease that affects the central nervous system, especially the brain, spinal cord, and optic nerve. Diagnosis of this disease is a very complex process and generally requires a lot of time. In addition, treatments are applied without any information on the disability course in each MS patient. For these two reasons, the objective of this study was to improve the MS diagnosis and predict the long-term course of disability in MS patients based on clinical data and retinal nerve fiber layer (RNFL) thickness, measured by optical coherence tomography (OCT). MATERIAL AND METHODS A total of 104 healthy controls and 108 MS patients, 82 of whom had a 10-year follow-up, were enrolled. Classification algorithms such as multiple linear regression (MLR), support vector machines (SVM), decision tree (DT), k-nearest neighbours (k-NN), Naïve Bayes (NB), ensemble classifier (EC) and long short-term memory (LSTM) recurrent neural network were tested to develop two predictive models: MS diagnosis model and MS disability course prediction model. RESULTS For MS diagnosis, the best result was obtained using EC (accuracy: 87.7%; sensitivity: 87.0%; specificity: 88.5%; precision: 88.7%; AUC: 0.8775). In line with this good performance, the accuracy was 85.4% using k-NN and 84.4% using SVM. And, for long-term prediction of MS disability course, LSTM recurrent neural network was the most appropriate classifier (accuracy: 81.7%; sensitivity: 81.1%; specificity: 82.2%; precision: 78.9%; AUC: 0.8165). The use of MLR, SVM and k-NN also showed a good performance (AUC ≥ 0.8). CONCLUSIONS This study demonstrated that machine learning techniques, using clinical and OCT data, can help establish an early diagnosis and predict the course of MS. This advance could help clinicians select more specific treatments for each MS patient. Therefore, our findings underscore the potential of RNFL thickness as a reliable MS biomarker.
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Affiliation(s)
- Alberto Montolío
- Group of Biomaterials, Aragon Institute of Engineering Research (I3A), University of Zaragoza, Zaragoza, Spain; Department of Mechanical Engineering, University of Zaragoza, Zaragoza, Spain
| | - Alejandro Martín-Gallego
- Group of Biomaterials, Aragon Institute of Engineering Research (I3A), University of Zaragoza, Zaragoza, Spain; Department of Mechanical Engineering, University of Zaragoza, Zaragoza, Spain
| | - José Cegoñino
- Group of Biomaterials, Aragon Institute of Engineering Research (I3A), University of Zaragoza, Zaragoza, Spain; Department of Mechanical Engineering, University of Zaragoza, Zaragoza, Spain
| | - Elvira Orduna
- Ophthalmology Department, Miguel Servet University Hospital, Zaragoza, Spain; GIMSO Research and Innovative Group, Aragon Institute for Health Research (IIS Aragon), Zaragoza, Spain
| | - Elisa Vilades
- Ophthalmology Department, Miguel Servet University Hospital, Zaragoza, Spain; GIMSO Research and Innovative Group, Aragon Institute for Health Research (IIS Aragon), Zaragoza, Spain
| | - Elena Garcia-Martin
- Ophthalmology Department, Miguel Servet University Hospital, Zaragoza, Spain; GIMSO Research and Innovative Group, Aragon Institute for Health Research (IIS Aragon), Zaragoza, Spain
| | - Amaya Pérez Del Palomar
- Group of Biomaterials, Aragon Institute of Engineering Research (I3A), University of Zaragoza, Zaragoza, Spain; Department of Mechanical Engineering, University of Zaragoza, Zaragoza, Spain.
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Abstract
PURPOSE OF REVIEW Multiple sclerosis (MS) is a clinically heterogeneous disease, which complicates expectant management as well as treatment decisions. This review provides an overview of both well established and emerging predictors of disability worsening, including clinical factors, imaging factors, biomarkers and treatment strategies. RECENT FINDINGS In addition to well known clinical predictors (age, male sex, clinical presentation, relapse behaviour), smoking, obesity, vascular and psychiatric comorbidities are associated with subsequent disability worsening in persons with MS. A number of imaging features are predictive of disability worsening and are present to varying degrees in relapsing and progressive forms of MS. These include brain volumes, spinal cord atrophy, lesion volumes and optical coherence tomography features. Cerebrospinal and more recently blood biomarkers including neurofilament light show promise as more easily attainable biomarkers of future disability accumulation. Importantly, recent observational studies suggest that initiation of early-intensive therapy, as opposed to escalation based on breakthrough disease, is associated with decreased accumulation of disability overall, although randomized controlled trials investigating this question are underway. SUMMARY Understanding risk factors associated with disability progression can help to both counsel patients and enhance the clinician's availability to provide evidence-based treatment recommendations.
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Exposure to Secondhand Smoke in Children is Associated with a Thinner Retinal Nerve Fiber Layer: The Hong Kong Children Eye Study. Am J Ophthalmol 2021; 223:91-99. [PMID: 33129810 DOI: 10.1016/j.ajo.2020.10.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 10/21/2020] [Accepted: 10/22/2020] [Indexed: 12/29/2022]
Abstract
PURPOSE We sought to assess the effects of exposure to secondhand smoke (SHS) on peripapillary retinal nerve fiber layer (p-RNFL) thickness in children. DESIGN Cross-sectional study. METHODS Children 6-8 years of age were consecutively recruited from the population-based Hong Kong Children Eye Study. All participants received comprehensive ophthalmic examinations and p-RNFL thickness was measured by spectral-domain optical coherence tomography. SHS data were derived from a validated questionnaire. Associations between p-RNFL thickness and SHS exposure status, number of smokers in the family, and quantity of smoking in the family were determined by multivariate linear regression after adjusting for potential confounders. RESULTS Among the Hong Kong Children Eye Study cohort (n = 3,103), approximately one-third of children were exposed to SHS (35.4%, n = 1,097). Compared to those without exposure to SHS, children exposed to SHS had similar age (P = .83), gender (P = .17), body mass index (P = .44), birth weight (P = .23), and axial length (P = .34), but had lower family income (P < .001) and lower parental education level (P < .001). After adjusting for all the above factors, exposure to SHS was associated with a thinner global p-RNFL by 4.4 μm (P < .001). Reduced p-RNFL was also associated with increased numbers of smokers in the family (β = -3.40, P < .001) and increased quantity of SHS (β = -0.22, P < .001). CONCLUSIONS Exposure to SHS in children was associated with a thinner p-RNFL. A thinner p-RNFL may increase the risk of irreversible visual impairment in the future. Our results provide evidence to recommend that children avoid exposure to SHS.
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Cellina M, Pirovano M, Ciocca M, Gibelli D, Floridi C, Oliva G. Radiomic analysis of the optic nerve at the first episode of acute optic neuritis: an indicator of optic nerve pathology and a predictor of visual recovery? Radiol Med 2021; 126:698-706. [PMID: 33392980 DOI: 10.1007/s11547-020-01318-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 11/25/2020] [Indexed: 12/28/2022]
Abstract
OBJECTIVE Retinal nerve fiber layer thickness (RNFL) is a biomarker of neuroaxonal loss and index of visual function in multiple sclerosis (MS). We aimed to assess the correlation between radiomic features and RNFL, visual acuity (VA) at patients' presentation, visual outcome (VO), and clinical diagnosis. METHODS We reviewed imaging and clinical data of 25 patients with a first episode of optic neuritis (ON) (14 females, 11 males; 5 bilateral ON; 7 left ON; 13 right ON). All patients underwent a complete ophthalmological assessment, including visual acuity and RNFL, neurological evaluation, orbits MRI. Segmentation of the optic nerves was performed through 3D slicer open software to get radiomics analysis. All patients underwent a complete neuro-ophthalmological follow-up at 6 months to assess the VO, classified as: complete recovery, partial recovery, deficit persistence/relapse, or visual worsening and were diagnosed as MS or clinically isolated syndrome. RESULTS We observed significant correlations between radiomic features and RNFL and between radiomic features and VA. Regression model analysis identified 1 radiomic feature with significant association with VO (Gray Level non-uniformity Normalized, p = 0.004) and 6 radiomic features with significant correlation with diagnosis (High Gray Level Zone Emphasis, p < 0.001; Entropy, p < 0.001, for T1 segmentation; Mean Absolute Deviation, p < 0.001; Coarseness < 0.001; Small Area Low Gray Level Emphasis, p < 0.001; Contrast, p = 0.008, for STIR segmentation). CONCLUSION Orbits MRI analysis at the first episode of ON has the potential to assess the visual function and VO in ON patients, and predict MS development.
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Affiliation(s)
- Michaela Cellina
- Radiology Department, ASST Fatebenefratelli Sacco, Piazza Principessa Clotilde 3, 20123, Milan, Italy.
| | - Marta Pirovano
- Neurology Department, ASST Fatebenefratelli Sacco, Piazza Principessa Clotilde 3, 20123, Milan, Italy
| | - Matteo Ciocca
- Neurology Department, ASST Fatebenefratelli Sacco, Piazza Principessa Clotilde 3, 20123, Milan, Italy
| | - Daniele Gibelli
- Dipartimento Di Scienze Biomediche Per La Salute, Università Degli Studi Di Milano, Via Mangiagalli 31, 20121, Milan, Italy
| | - Chiara Floridi
- Department of Radiology - Division of Special and Pediatric Radiology, University Hospital "Umberto I - Lancisi - Salesi", Via Conca 71, 60126, Ancona, AN, Italy
| | - Giancarlo Oliva
- Radiology Department, ASST Fatebenefratelli Sacco, Piazza Principessa Clotilde 3, 20123, Milan, Italy
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Costello F, Chen JJ. The role of optical coherence tomography in the diagnosis of afferent visual pathway problems: A neuroophthalmic perspective. HANDBOOK OF CLINICAL NEUROLOGY 2021; 178:97-113. [PMID: 33832689 DOI: 10.1016/b978-0-12-821377-3.00007-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Optical coherence tomography (OCT) is a noninvasive ocular imaging technique that has become a standard tool in neuroophthalmic practice. Specifically, OCT captures retinal manifestations of neuroaxonal injury caused by lesions along anterior and posterior regions of the afferent visual pathway, in patients presenting with vision loss. More recently, the advent of OCT angiography (OCTA) has enabled evaluation of the choroidal and retinal microvasculature, thus informing our understanding regarding vascular mechanisms associated with optic nerve and retinal injuries. Much of our longitudinal experience with OCT in the field of neuroophthalmology has been acquired from the study of optic neuritis (ON) caused by inflammatory disorders of the central nervous system (CNS). Over the past two decades, OCT has emerged as a surrogate endpoint for CNS neuroaxonal injury in multiple sclerosis (MS) research trials. On a more pragmatic level, OCT is used in the clinical arena to diagnose ON associated with: MS, neuromyelitis optica spectrum disorder (NMOSD), and myelin oligodendrocyte glycoprotein (MOG) antibody associated disease (MOGAD). Subsequent advancements in swept-source (SS) and enhanced depth imaging (EDI) have established OCT as the new "gold standard" in the diagnosis of optic disc drusen. Recent studies have highlighted pathognomonic OCT features that distinguish cases of true papilledema from pseudopapilledema, in patients presenting with undifferentiated optic disc elevation. Preoperative OCT measures of neuroaxonal integrity have shown prognostic value in predicting postoperative visual outcomes for patients with compressive anterior visual pathway lesions. Finally, OCT is indispensable in differentiating optic neuropathies from retinal diseases in patients with visual loss and a nondiagnostic fundus examination. An in-depth discussion regarding the technical aspects of OCT is beyond the scope of this chapter. Instead, we wish to highlight the value OCT brings to the diagnosis and management of common neuroophthalmic conditions, with emphasis on optic neuropathies and retinal disorders.
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Affiliation(s)
- Fiona Costello
- Departments of Clinical Neurosciences and Surgery, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
| | - John J Chen
- Departments of Ophthalmology and Neurology, Mayo Clinic, Rochester, MN, United States
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Lo C, Vuong LN, Micieli JA. Recent advances and future directions on the use of optical coherence tomography in neuro-ophthalmology. Taiwan J Ophthalmol 2021; 11:3-15. [PMID: 33767951 PMCID: PMC7971436 DOI: 10.4103/tjo.tjo_76_20] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 09/26/2020] [Indexed: 12/12/2022] Open
Abstract
Optical coherence tomography (OCT) is a noninvasive imaging technique used to qualitatively and quantitatively analyze various layers of the retina. OCT of the retinal nerve fiber layer (RNFL) and ganglion cell-inner plexiform layer (GCIPL) is particularly useful in neuro-ophthalmology for the evaluation of patients with optic neuropathies and retrochiasmal visual pathway disorders. OCT allows for an objective quantification of edema and atrophy of the RNFL and GCIPL, which may be evident before obvious clinical signs and visual dysfunction develop. Enhanced depth imaging OCT allows for visualization of deep structures of the optic nerve and has emerged as the gold standard for the detection of optic disc drusen. In the evaluation of compressive optic neuropathies, OCT RNFL and GCIPL thicknesses have been established as the most important visual prognostic factor. There is increasing evidence that inclusion of OCT as part of the diagnostic criteria for multiple sclerosis (MS) increases its sensitivity. Moreover, OCT of the RNFL and GCIPL may be helpful in the early detection and monitoring the treatment of conditions such as MS and Alzheimer's disease. OCT is an important aspect of the neuro-ophthalmologic assessment and its use is likely to increase moving forward.
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Affiliation(s)
- Cody Lo
- Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Laurel N. Vuong
- The New England Eye Center, Tufts Medical Center, Boston, MA, USA
| | - Jonathan A. Micieli
- Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, ON, Canada
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Gilmore CS, Lim KO, Garvin MK, Wang JK, Ledolter J, Fenske AL, Gentz CL, Nellis J, Armstrong MT, Kardon RH. Association of Optical Coherence Tomography With Longitudinal Neurodegeneration in Veterans With Chronic Mild Traumatic Brain Injury. JAMA Netw Open 2020; 3:e2030824. [PMID: 33351088 PMCID: PMC7756235 DOI: 10.1001/jamanetworkopen.2020.30824] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
IMPORTANCE Mild traumatic brain injury (TBI) may predispose individuals to progressive neurodegeneration. OBJECTIVE To identify evidence of neurodegeneration through longitudinal evaluation of changes in retinal layer thickness using optical coherence tomography in veterans with a history of mild TBI. DESIGN, SETTING, AND PARTICIPANTS This longitudinal cohort study evaluated veterans who were receiving services at the Minneapolis Veterans Affairs Health Care System. Symptomatic or mild TBI was diagnosed according to the Mayo TBI Severity Classification System. Participants in the age-matched control group had no history of TBI. Participants with any history or evidence of retinal or optic nerve disease that could affect retinal thickness were excluded. Data analysis was performed from July 2019 to February 2020. EXPOSURES The presence and severity of mild TBI were determined through consensus review of self-report responses during the Minnesota Blast Exposure Screening Tool semistructured interview. MAIN OUTCOMES AND MEASURES Change over time of retinal nerve fiber layer (RNFL) thickness. RESULTS A total of 139 veterans (117 men [84%]; mean [SD] age, 49.9 [11.1] years) were included in the study, 69 in the TBI group and 70 in the control group. Veterans with mild TBI showed significantly greater RNFL thinning compared with controls (mean [SE] RNFL slope, -1.47 [0.24] μm/y vs -0.31 [0.32] μm/y; F1,122 = 8.42; P = .004; Cohen d = 0.52). Functionally, veterans with mild TBI showed greater declines in visual field mean deviation (mean [SE] slope, -0.09 [0.14] dB/y vs 0.46 [0.23] dB/y; F1,122 = 4.08; P = .046; Cohen d = 0.36) and pattern standard deviation (mean [SE] slope, 0.09 [0.06] dB/y vs -0.10 [0.07] dB/y; F1,122 = 4.78; P = .03; Cohen d = 0.39) and high spatial frequency (12 cycles/degree) contrast sensitivity compared with controls. Cognitively, there was a significantly greater decrease in the number of errors over time during the Groton Maze Learning Test (GMLT) in controls compared with veterans with mild TBI (mean [SE] slope, -9.30 [1.48] errors/y vs -5.23 [1.24] errors/y; F1,127 = 4.43; P = .04; Cohen d = 0.37). RNFL tissue loss was significantly correlated with both worsening performance on the GMLT over time (Spearman ρ = -0.20; P = .03) and mild TBI severity (Spearman ρ = -0.25; P = .006). The more severe the mild TBI (larger Minnesota Blast Exposure Screening Tool severity score), the faster the reduction in RNFL thickness (ie, the more negative the slope) across time. CONCLUSIONS AND RELEVANCE This cohort study found longitudinal evidence for significant, progressive neural degeneration over time in veterans with mild TBI, as indicated by greater RNFL tissue loss in patients with mild TBI vs controls, as well as measures of function. These results suggest that these longitudinal measures may be useful biomarkers of neurodegeneration. Changes in this biomarker may provide early detection of subsequent cognitive and functional deficits that may impact veterans' independence and need for care.
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Affiliation(s)
- Casey S. Gilmore
- Minneapolis VA Healthcare System, Minneapolis, Minnesota
- Defense and Veterans Brain Injury Center, Minneapolis, Minnesota
| | - Kelvin O. Lim
- Minneapolis VA Healthcare System, Minneapolis, Minnesota
- Defense and Veterans Brain Injury Center, Minneapolis, Minnesota
- Department of Psychiatry, University of Minnesota, Minneapolis
| | - Mona K. Garvin
- Center for the Prevention and Treatment of Visual Loss, Iowa City VA Healthcare System, Iowa City, Iowa
- Department of Electrical and Computer Engineering, University of Iowa, Iowa City
| | - Jui-Kai Wang
- Center for the Prevention and Treatment of Visual Loss, Iowa City VA Healthcare System, Iowa City, Iowa
- Department of Electrical and Computer Engineering, University of Iowa, Iowa City
| | - Johannes Ledolter
- Department of Electrical and Computer Engineering, University of Iowa, Iowa City
- Department of Business Analytics and Department of Statistics and Actuarial Science, University of Iowa, Iowa City
| | - Alicia L. Fenske
- Minneapolis VA Healthcare System, Minneapolis, Minnesota
- Defense and Veterans Brain Injury Center, Minneapolis, Minnesota
| | - Carolyn L. Gentz
- Minneapolis VA Healthcare System, Minneapolis, Minnesota
- Defense and Veterans Brain Injury Center, Minneapolis, Minnesota
| | - Julie Nellis
- Center for the Prevention and Treatment of Visual Loss, Iowa City VA Healthcare System, Iowa City, Iowa
- Department of Ophthalmology and Visual Sciences, University of Iowa, Iowa City
| | - Michael T. Armstrong
- Minneapolis VA Healthcare System, Minneapolis, Minnesota
- Defense and Veterans Brain Injury Center, Minneapolis, Minnesota
| | - Randy H. Kardon
- Center for the Prevention and Treatment of Visual Loss, Iowa City VA Healthcare System, Iowa City, Iowa
- Department of Ophthalmology and Visual Sciences, University of Iowa, Iowa City
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Bsteh G, Hegen H, Altmann P, Berek K, Auer M, Zinganell A, Di Pauli F, Rommer P, Leutmezer F, Deisenhammer F, Berger T. Inner nuclear layer and olfactory threshold are interlinked and reflect inflammatory activity in multiple sclerosis. Mult Scler J Exp Transl Clin 2020; 6:2055217320945738. [PMID: 32922831 PMCID: PMC7448136 DOI: 10.1177/2055217320945738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 06/07/2020] [Accepted: 07/01/2020] [Indexed: 12/26/2022] Open
Abstract
Background Retinal inner nuclear layer (INL) and olfactory threshold (OT) are associated with inflammatory activity in multiple sclerosis (MS). Objective The study aims to investigate (a) whether there is an association of INL and OT in MS and (b) if changes in INL and OT follow a time pattern in relation to MS relapse. Methods We assessed INL by optical coherence tomography and OT by Sniffin' Sticks in three different cohorts: a cross-sectional MS cohort (n = 260), a longitudinal, 3-year cohort of MS (n = 141) and healthy controls (n = 30), and a longitudinal, 24-weeks cohort with acute MS relapse (n = 28) and stable MS controls (n = 27). Results Cross-sectionally, INL and OT were strongly correlated with number but not localization of relapse in the previous 12 months and INL correlated with OT. Longitudinally, INL was thicker and OT score was lower short term in times of relapse activity, but not long term and independent of relapse localization. In acute MS relapse, INL and OT were altered compared with stable MS, again, independent of relapse localization resolving over 12-24 weeks with faster approximation to stable MS after escalation of disease-modifying treatment. Conclusions INL and OT are interlinked markers of short-term inflammatory activity, following a nearly congruent time pattern and independent of relapse localization, possibly reflecting a proinflammatory state within the central nervous system.
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Affiliation(s)
- Gabriel Bsteh
- Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Harald Hegen
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Patrick Altmann
- Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Klaus Berek
- Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Michael Auer
- Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Anne Zinganell
- Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Franziska Di Pauli
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Paulus Rommer
- Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Fritz Leutmezer
- Department of Neurology, Medical University of Vienna, Vienna, Austria
| | | | - Thomas Berger
- Department of Neurology, Medical University of Vienna, Vienna, Austria
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Bsteh G, Hegen H, Altmann P, Auer M, Berek K, Zinganell A, Pauli FD, Rommer P, Deisenhammer F, Leutmezer F, Berger T. Validation of inter-eye difference thresholds in optical coherence tomography for identification of optic neuritis in multiple sclerosis. Mult Scler Relat Disord 2020; 45:102403. [PMID: 32738702 DOI: 10.1016/j.msard.2020.102403] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 06/29/2020] [Accepted: 07/15/2020] [Indexed: 12/21/2022]
Abstract
OBJECTIVE To examine and validate thresholds for inter-eye differences in peripapillary retinal nerve fibre (pRNFL) and ganglion cell + inner plexiform layer (GCIPL) thicknesses for identifying unilateral optic neuritis in MS. METHODS In this two-centre, cross-sectional study, optical coherence tomography was performed in 340 patients with clinically isolated syndrome (CIS) and MS. Cut-off values of inter-eye difference for identification of eyes with a history of unilateral ON were evaluated by receiver-operating characteristics analysis. RESULTS For pRNFL ≥5 µm, sensitivity was 69% and specificity 68%, while for GCIPL ≥4 µm sensitivity was 67% and specificity 78%. The areas under the curve (AUC) were 0.72 (95% confidence interval: 0.64 - 0.79) for pRNFL and 0.78 (95%CI: 0.72 - 0.85) for GCIPL, indicating GCIPL as the superior model (p<0.001). When analysing only CIS patients, GCIPL inter-eye difference ≥4 µm also remained significant, while pRNFL inter-eye difference did not. INTERPRETATIONS Inter-eye differences of ≥4 μm for GCIPL and to a lesser degree ≥5 μm for RNFL are robust thresholds for identifying unilateral optic nerve lesions. These thresholds could be used to demonstrate previous symptomatic and possibly asymptomatic ON and might be included into a new version of the diagnostic criteria.
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Affiliation(s)
- Gabriel Bsteh
- Department of Neurology, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria.
| | - Harald Hegen
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Patrick Altmann
- Department of Neurology, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - Michael Auer
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Klaus Berek
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Anne Zinganell
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Franziska Di Pauli
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Paulus Rommer
- Department of Neurology, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | | | - Fritz Leutmezer
- Department of Neurology, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - Thomas Berger
- Department of Neurology, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
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