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Göcmen A, Ethemoglu O. The relationship between sleep disorders with patients' demographic-clinical characteristics and quality of life in patients with multiple sclerosis. Clin Neurol Neurosurg 2023; 232:107888. [PMID: 37453283 DOI: 10.1016/j.clineuro.2023.107888] [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: 12/06/2022] [Revised: 07/07/2023] [Accepted: 07/09/2023] [Indexed: 07/18/2023]
Abstract
OBJECTIVES In this study, the effect of sleep disturbance on the quality of life in MS patients and its relationship between demographic and clinical characteristics of the patients were investigated. METHODS 67 MS patients and 51 healthy individuals were included in our study. The patient group consisted of 43 women and 24 men. The control group consisted of 32 women and 19 men. Demographic and clinical characteristics of the patients; age, gender, duration of illness, annual number of attacks, treatments, and medical history were recorded and neurological examinations of all patients were performed and disability was determined for each patient with Kurtzke's expanded disability status scale (EDSS). Evaluations were made using demographic data, Pittsburgh Sleep Quality Index, Epworth Sleepiness Scale, Expanded Disability Status Scale (EDSS), Fatigue Severity Scale, Hospital Anxiety and Depression Scale, Berlin Questionnaire and Multiple Sclerosis Quality of Life (MSYK) - 54 Instrument. RESULTS We found that the quality of life was significantly impaired in MS patients compared to healthy controls (p < 0.001). And we found that this was related to the presence of progressive MS and chronic fatigue among the clinical features of the patient, sleep-disordered breathing among sleep disorders, poor sleep quality, comorbid anxiety and depression (p = 0.001, p:0.009, p = 0.022, p = 0.007, p < 0.001 and p = 0.001, respectively). CONCLUSION All these findings show that sleep disorders in patients with MS are a condition that should be questioned and treated in the follow up of the disease, otherwise it may affect the quality of life of patients negatively.
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Affiliation(s)
- Adalet Göcmen
- Sanlıurfa Training and Research Hospital, Department of Neurology, Sanlıurfa, Turkey
| | - Ozlem Ethemoglu
- Harran University School of Medicine, Department of Neurology, Sanlıurfa, Turkey.
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2
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Khan Z, Gupta GD, Mehan S. Cellular and Molecular Evidence of Multiple Sclerosis Diagnosis and Treatment Challenges. J Clin Med 2023; 12:4274. [PMID: 37445309 DOI: 10.3390/jcm12134274] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 06/19/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023] Open
Abstract
Multiple sclerosis (MS) is a chronic autoimmune disease that impacts the central nervous system and can result in disability. Although the prevalence of MS has increased in India, diagnosis and treatment continue to be difficult due to several factors. The present study examines the difficulties in detecting and treating multiple sclerosis in India. A lack of MS knowledge among healthcare professionals and the general public, which delays diagnosis and treatment, is one of the significant issues. Inadequate numbers of neurologists and professionals with knowledge of MS management also exacerbate the situation. In addition, MS medications are expensive and not covered by insurance, making them inaccessible to most patients. Due to the absence of established treatment protocols and standards for MS care, India's treatment techniques vary. In addition, India's population diversity poses unique challenges regarding genetic variations, cellular and molecular abnormalities, and the potential for differing treatment responses. MS is more difficult to accurately diagnose and monitor due to a lack of specialized medical supplies and diagnostic instruments. Improved awareness and education among healthcare professionals and the general public, as well as the development of standardized treatment regimens and increased investment in MS research and infrastructure, are required to address these issues. By addressing these issues, it is anticipated that MS diagnosis and treatment in India will improve, leading to better outcomes for those affected by this chronic condition.
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Affiliation(s)
- Zuber Khan
- Division of Neuroscience, Department of Pharmacology, ISF College of Pharmacy, IK Gujral Punjab Technical University, Jalandhar 144603, India
| | - Ghanshyam Das Gupta
- Department of Pharmaceutics, ISF College of Pharmacy, IK Gujral Punjab Technical University, Jalandhar 144603, India
| | - Sidharth Mehan
- Division of Neuroscience, Department of Pharmacology, ISF College of Pharmacy, IK Gujral Punjab Technical University, Jalandhar 144603, India
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3
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Payet CA, You A, Fayet OM, Dragin N, Berrih-Aknin S, Le Panse R. Myasthenia Gravis: An Acquired Interferonopathy? Cells 2022; 11:cells11071218. [PMID: 35406782 PMCID: PMC8997999 DOI: 10.3390/cells11071218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/23/2022] [Accepted: 03/28/2022] [Indexed: 01/12/2023] Open
Abstract
Myasthenia gravis (MG) is a rare autoimmune disease mediated by antibodies against components of the neuromuscular junction, particularly the acetylcholine receptor (AChR). The thymus plays a primary role in AChR-MG patients. In early-onset AChR-MG and thymoma-associated MG, an interferon type I (IFN-I) signature is clearly detected in the thymus. The origin of this chronic IFN-I expression in the thymus is not yet defined. IFN-I subtypes are normally produced in response to viral infection. However, genetic diseases called interferonopathies are associated with an aberrant chronic production of IFN-I defined as sterile inflammation. Some systemic autoimmune diseases also share common features with interferonopathies. This review aims to analyze the pathogenic role of IFN-I in these diseases as compared to AChR-MG in order to determine if AChR-MG could be an acquired interferonopathy.
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Affiliation(s)
- Cloé A Payet
- Sorbonne University, INSERM, Institute of Myology, Center of Research in Myology, F-75013 Paris, France
| | - Axel You
- Sorbonne University, INSERM, Institute of Myology, Center of Research in Myology, F-75013 Paris, France
| | - Odessa-Maud Fayet
- Sorbonne University, INSERM, Institute of Myology, Center of Research in Myology, F-75013 Paris, France
| | - Nadine Dragin
- Sorbonne University, INSERM, Institute of Myology, Center of Research in Myology, F-75013 Paris, France
| | - Sonia Berrih-Aknin
- Sorbonne University, INSERM, Institute of Myology, Center of Research in Myology, F-75013 Paris, France
| | - Rozen Le Panse
- Sorbonne University, INSERM, Institute of Myology, Center of Research in Myology, F-75013 Paris, France
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4
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Melero-Jerez C, Suardíaz M, Lebrón-Galán R, Marín-Bañasco C, Oliver-Martos B, Machín-Díaz I, Fernández Ó, de Castro F, Clemente D. The presence and suppressive activity of myeloid-derived suppressor cells are potentiated after interferon-β treatment in a murine model of multiple sclerosis. Neurobiol Dis 2019; 127:13-31. [PMID: 30798007 DOI: 10.1016/j.nbd.2019.02.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 12/13/2018] [Accepted: 02/20/2019] [Indexed: 02/06/2023] Open
Abstract
Multiple sclerosis (MS) is an autoimmune demyelinating disease of the human central nervous system (CNS), mainly affecting young adults. Among the immunomodulatory disease modifying treatments approved up to date to treat MS, IFN-β remains to be one of the most widely prescribed for the Relapsing-Remitting (RR) variant of the disease, although its mechanism of action is still partially understood. RR-MS variant is characterized by phases with increasing neurological symptoms (relapses) followed by periods of total or partial recovery (remissions), which implies the existence of immunomodulatory agents to promote the relapsing-to-remitting transition. Among these agents, it has been described the immunosuppressive role of a heterogeneous population of immature myeloid cells, namely the myeloid-derived suppressor cells (MDSCs) during the clinical course of the experimental autoimmune encephalomyelitis (EAE), the most used MS model to study RRMS. However, it is still unknown how the current MS disease modifying treatments, e.g. IFN- β, affects to MDSCs number or activity. Our present results show that a single injection of IFN-β at the onset of the clinical course reduces the severity of the EAE, enhancing the presence of MDSCs within the smaller demyelinated areas. Moreover, the single dose of IFN-β promotes MDSC immunosuppressive activity both in vivo and in vitro, augmenting T cell apoptosis. Finally, we show that IFN-ß preserves MDSC immaturity, preventing their differentiation to mature and less suppressive myeloid cell subsets. Taking together, all these data add new insights into the mechanism of IFN-β treatment in EAE and point to MDSCs as a putative endogenous mediator of its beneficial role in this animal model of MS.
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Affiliation(s)
- Carolina Melero-Jerez
- Grupo de Neuroinmuno-Reparación, Hospital Nacional de Parapléjicos, Finca La Peraleda s/n, 45071 Toledo, Spain; Grupo de Neurobiología del Desarrollo-GNDe, Instituto Cajal-CSIC, Avenida Doctor Arce 37, 28002 Madrid, Spain
| | - Margarita Suardíaz
- Unidad de Gestión Clínica Inter-centros de Neurociencias, Laboratorio de Investigación y Servicio de Neurología, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitario de Málaga, Madrid, Spain
| | - Rafael Lebrón-Galán
- Grupo de Neuroinmuno-Reparación, Hospital Nacional de Parapléjicos, Finca La Peraleda s/n, 45071 Toledo, Spain
| | - Carmen Marín-Bañasco
- Unidad de Gestión Clínica Inter-centros de Neurociencias, Laboratorio de Investigación y Servicio de Neurología, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitario de Málaga, Madrid, Spain
| | - Begoña Oliver-Martos
- Unidad de Gestión Clínica Inter-centros de Neurociencias, Laboratorio de Investigación y Servicio de Neurología, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitario de Málaga, Madrid, Spain
| | - Isabel Machín-Díaz
- Grupo de Neuroinmuno-Reparación, Hospital Nacional de Parapléjicos, Finca La Peraleda s/n, 45071 Toledo, Spain
| | - Óscar Fernández
- Unidad de Gestión Clínica Inter-centros de Neurociencias, Laboratorio de Investigación y Servicio de Neurología, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitario de Málaga, Madrid, Spain
| | - Fernando de Castro
- Grupo de Neurobiología del Desarrollo-GNDe, Instituto Cajal-CSIC, Avenida Doctor Arce 37, 28002 Madrid, Spain.
| | - Diego Clemente
- Grupo de Neuroinmuno-Reparación, Hospital Nacional de Parapléjicos, Finca La Peraleda s/n, 45071 Toledo, Spain.
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Arabi YM, Alothman A, Balkhy HH, Al-Dawood A, AlJohani S, Al Harbi S, Kojan S, Al Jeraisy M, Deeb AM, Assiri AM, Al-Hameed F, AlSaedi A, Mandourah Y, Almekhlafi GA, Sherbeeni NM, Elzein FE, Memon J, Taha Y, Almotairi A, Maghrabi KA, Qushmaq I, Al Bshabshe A, Kharaba A, Shalhoub S, Jose J, Fowler RA, Hayden FG, Hussein MA. Treatment of Middle East Respiratory Syndrome with a combination of lopinavir-ritonavir and interferon-β1b (MIRACLE trial): study protocol for a randomized controlled trial. Trials 2018; 19:81. [PMID: 29382391 PMCID: PMC5791210 DOI: 10.1186/s13063-017-2427-0] [Citation(s) in RCA: 198] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 12/20/2017] [Indexed: 11/28/2022] Open
Abstract
Background It had been more than 5 years since the first case of Middle East Respiratory Syndrome coronavirus infection (MERS-CoV) was recorded, but no specific treatment has been investigated in randomized clinical trials. Results from in vitro and animal studies suggest that a combination of lopinavir/ritonavir and interferon-β1b (IFN-β1b) may be effective against MERS-CoV. The aim of this study is to investigate the efficacy of treatment with a combination of lopinavir/ritonavir and recombinant IFN-β1b provided with standard supportive care, compared to treatment with placebo provided with standard supportive care in patients with laboratory-confirmed MERS requiring hospital admission. Methods The protocol is prepared in accordance with the SPIRIT (Standard Protocol Items: Recommendations for Interventional Trials) guidelines. Hospitalized adult patients with laboratory-confirmed MERS will be enrolled in this recursive, two-stage, group sequential, multicenter, placebo-controlled, double-blind randomized controlled trial. The trial is initially designed to include 2 two-stage components. The first two-stage component is designed to adjust sample size and determine futility stopping, but not efficacy stopping. The second two-stage component is designed to determine efficacy stopping and possibly readjustment of sample size. The primary outcome is 90-day mortality. Discussion This will be the first randomized controlled trial of a potential treatment for MERS. The study is sponsored by King Abdullah International Medical Research Center, Riyadh, Saudi Arabia. Enrollment for this study began in November 2016, and has enrolled thirteen patients as of Jan 24-2018. Trial registration ClinicalTrials.gov, ID: NCT02845843. Registered on 27 July 2016. Electronic supplementary material The online version of this article (doi:10.1186/s13063-017-2427-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yaseen M Arabi
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, King Abdullah International Medical Research Center, Riyadh, Saudi Arabia. .,Intensive Care Department, King Abdulaziz Medical City, Riyadh, Saudi Arabia. .,International Severe Acute Respiratory and Emerging Infection Consortium (ISARIC) University of Oxford, Old Road Campus, Roosevelt Drive, Oxford, OX3 7FZ, UK.
| | - Adel Alothman
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, King Abdullah International Medical Research Center, Riyadh, Saudi Arabia.,Department of Medicine, King Abdulaziz Medical City, Riyadh, Saudi Arabia
| | - Hanan H Balkhy
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, King Abdullah International Medical Research Center, Riyadh, Saudi Arabia.,Department of Infection Prevention and Control, King Abdulaziz Medical City, Riyadh, Saudi Arabia
| | - Abdulaziz Al-Dawood
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, King Abdullah International Medical Research Center, Riyadh, Saudi Arabia.,Intensive Care Department, King Abdulaziz Medical City, Riyadh, Saudi Arabia
| | - Sameera AlJohani
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, King Abdullah International Medical Research Center, Riyadh, Saudi Arabia.,Department of Pathology and Laboratory Medicine, King Abdulaziz Medical City, Riyadh, Saudi Arabia
| | - Shmeylan Al Harbi
- College of Pharmacy, King Saud Bin Abdulaziz University for Health Sciences, King Abdullah International Medical Research Center, Riyadh, Saudi Arabia.,Pharmaceutical Care Department, King Abdulaziz Medical City, Riyadh, Saudi Arabia
| | - Suleiman Kojan
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, King Abdullah International Medical Research Center, Riyadh, Saudi Arabia.,Department of Medicine, King Abdulaziz Medical City, Riyadh, Saudi Arabia
| | - Majed Al Jeraisy
- College of Pharmacy, King Saud Bin Abdulaziz University for Health Sciences, King Abdullah International Medical Research Center, Riyadh, Saudi Arabia.,Pharmaceutical Care Department, King Abdulaziz Medical City, Riyadh, Saudi Arabia
| | - Ahmad M Deeb
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, King Abdullah International Medical Research Center, Riyadh, Saudi Arabia.,Intensive Care Department, King Abdulaziz Medical City, Riyadh, Saudi Arabia
| | - Abdullah M Assiri
- Infection Prevention and Control, Ministry of Health, Riyadh, Saudi Arabia
| | - Fahad Al-Hameed
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, King Abdullah International Medical Research Center, Jeddah, Saudi Arabia.,Intensive Care Department, King Abdulaziz Medical City, Jeddah, Saudi Arabia
| | - Asim AlSaedi
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, King Abdullah International Medical Research Center, Jeddah, Saudi Arabia.,Department of Infection Prevention and Control, King Abdulaziz Medical City, Jeddah, Saudi Arabia
| | - Yasser Mandourah
- Department of Intensive Care Services, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
| | - Ghaleb A Almekhlafi
- Department of Intensive Care Services, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
| | | | - Fatehi Elnour Elzein
- Infectious Diseases Division, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
| | - Javed Memon
- Intensive Care Section, Department of Medicine, King Abdulaziz Hospital, Alahsa, Saudi Arabia
| | - Yusri Taha
- Department of Medicine, King Abdulaziz Hospital, Alahsa, Saudi Arabia
| | - Abdullah Almotairi
- Department of Critical Care Medicine, King Fahad Medical City, Riyadh, Saudi Arabia
| | - Khalid A Maghrabi
- Department of Critical Care Medicine, King Faisal Specialist Hospital and Research, Riyadh, Saudi Arabia
| | - Ismael Qushmaq
- Department of Medicine, King Faisal Specialist Hospital and Research Center, Jeddah, Saudi Arabia
| | - Ali Al Bshabshe
- Department of Critical Care Medicine, King Khalid University, Aseer Central Hospital, Abha, Saudi Arabia
| | - Ayman Kharaba
- Department of Critical Care, King Fahad Hospital, Ohoud Hospital, Al-Madinah Al-Monawarah, Saudi Arabia
| | - Sarah Shalhoub
- Department of Medicine, King Fahad Armed Forces Hospital, Jeddah, Saudi Arabia
| | - Jesna Jose
- Department of Biostatistics and Bioinformatics, King Saud Bin Abdulaziz University for Health Sciences, King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
| | - Robert A Fowler
- AMR Infection Control and Publications AIP/PED/HSE/HQ, Institute of Health Policy Management and Evaluation, University of Toronto, Toronto, ON, Canada.,Department of Critical Care Medicine, Sunnybrook Hospital, 2075 Bayview Avenue, Room D478, Toronto, ON, Canada.,Department of Medicine, Sunnybrook Hospital, 2075 Bayview Avenue, Room D478, Toronto, ON, Canada
| | - Frederick G Hayden
- Department of Medicine, Division of Infectious Diseases and International Health, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Mohamed A Hussein
- Department of Biostatistics and Bioinformatics, King Saud Bin Abdulaziz University for Health Sciences, King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
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Braley TJ. Overview: A Framework for the Discussion of Sleep in Multiple Sclerosis. CURRENT SLEEP MEDICINE REPORTS 2017; 3:263-271. [PMID: 30034994 PMCID: PMC6051415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
PURPOSE OF REVIEW This review will focus on the causes, consequences, workup, and treatment of sleep disordered breathing, insomnia, and restless legs syndrome in patients with MS. An approach to the discussion of sleep problems and associated symptoms with MS patients, to facilitate timely and accurate diagnosis, is emphasized. RECENT FINDINGS Recent research suggests that sleep disordered breathing, insomnia, and restless legs syndrome disproportionately affect patients with MS, and contribute to substantial morbidity in this population. SUMMARY Sleep disordered breathing, insomnia, and restless legs syndrome are common but frequently under-recognized conditions in patients with MS. Additional efforts are needed to incorporate discussions about sleep into the clinical evaluation of MS patients. Neuroanatomical features, concomitant comorbidities, and medications associated with MS may partially explain the high prevalence of these disorders in MS. Prompt identification and treatment of sleep disorders may reduce fatigue, and a thorough discussion with the MS patient about their sleep will facilitate fatigue management. Research that further characterizes recently identified relationships between sleep disturbances and other chronic symptoms in MS such as pain, depression and cognitive dysfunction could identify new pathways to improve some of the most debilitating symptoms of MS.
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Affiliation(s)
- Tiffany J Braley
- Assistant Professor of Neurology, University of Michigan Multiple Sclerosis and Sleep Disorders Centers, C728 Med-Inn Building, 1500 E. Medical Center Drive, Ph: 734-232-1147, ,
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7
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Braley TJ. Overview: a Framework for the Discussion of Sleep in Multiple Sclerosis. CURRENT SLEEP MEDICINE REPORTS 2017. [DOI: 10.1007/s40675-017-0092-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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8
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Reilly GD, Mahkawnghta AS, Jelinek PL, De Livera AM, Weiland TJ, Brown CR, Taylor KL, Neate SL, Jelinek GA, Marck CH. International Differences in Multiple Sclerosis Health Outcomes and Associated Factors in a Cross-sectional Survey. Front Neurol 2017; 8:229. [PMID: 28620343 PMCID: PMC5450014 DOI: 10.3389/fneur.2017.00229] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 05/11/2017] [Indexed: 11/13/2022] Open
Abstract
Multiple sclerosis (MS) is a major cause of disability and poor quality of life (QOL). Previous studies have shown differences in MS health outcomes between countries. This study aimed to examine the associations between international regions and health outcomes in people with MS. Self-reported data were taken from the Health Outcomes and Lifestyle In a Sample of people with Multiple Sclerosis online survey collected in 2012. The 2,401 participants from 37 countries were categorized into three regions: Australasia, Europe, and North America. Differences were observed between regions in disability, physical and mental health QOL, fatigue, and depression, but most of these disappeared after adjusting for sociodemographic, disease, and lifestyle factors in multivariable regression models. However, adjusted odds for disability were higher in Europe [odds ratio (OR): 2.17, 95% confidence interval (CI): 1.28 to 3.67] and North America (OR: 1.79, 95% CI: 1.28 to 2.51) compared to Australasia. There may be other unmeasured factors that vary between regions, including differences in access and quality of healthcare services, determining disability in MS. When assessing differences in MS health outcomes, lifestyle factors and medication use should be taken into consideration.
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Affiliation(s)
- Grace D Reilly
- Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia
| | - Awng Shar Mahkawnghta
- Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia
| | - Pia L Jelinek
- Sir Charles Gairdner Hospital, Nedlands, WA, Australia
| | - Alysha M De Livera
- Neuroepidemiology Unit, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia.,Biostatistics Unit, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia
| | - Tracey J Weiland
- Neuroepidemiology Unit, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia
| | - Chelsea R Brown
- Neuroepidemiology Unit, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia
| | - Keryn L Taylor
- Neuroepidemiology Unit, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia
| | - Sandra L Neate
- Neuroepidemiology Unit, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia
| | - George A Jelinek
- Neuroepidemiology Unit, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia
| | - Claudia H Marck
- Neuroepidemiology Unit, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia
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9
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Review on Toll-Like Receptor Activation in Myasthenia Gravis: Application to the Development of New Experimental Models. Clin Rev Allergy Immunol 2017; 52:133-147. [PMID: 27207173 DOI: 10.1007/s12016-016-8549-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Abnormal toll-like receptor (TLR) activation and uncontrolled resolution of inflammation are suspected to play a key role in the development of autoimmune diseases. Acquired myasthenia gravis (MG) is an invalidating neuromuscular disease leading to muscle weaknesses. MG is mainly mediated by anti-acetylcholine receptor (AChR) autoantibodies, and thymic hyperplasia characterized by ectopic germinal centers is a common feature in MG. An abnormal expression of certain TLRs is observed in the thymus of MG patients associated with the overexpression of interferon (IFN)-β, the orchestrator of thymic changes in MG. Experimental models have been developed for numerous autoimmune diseases. These models are induced by animal immunization with a purified antigen solubilized in complete Freund's adjuvant (CFA) containing heat-inactivated mycobacterium tuberculosis (MTB). Sensitization against the antigen is mainly due to the activation of TLR signaling pathways by the pathogen motifs displayed by MTB, and attempts have been made to substitute the use of CFA by TLR agonists. AChR emulsified in CFA is used to induce the classical experimental autoimmune MG model (EAMG). However, the TLR4 activator lipopolysaccharide (LPS) has proved to be efficient to replace MTB and induce a sensitization against purified AChR. Poly(I:C), the well-known TLR3 agonist, is also able by itself to induce MG symptoms in mice associated with early thymic changes as observed in human MG. In this review, we discuss the abnormal expression of TLRs in MG patients and we describe the use of TLR agonists to induce EAMG in comparison with other autoimmune experimental models.
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10
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Vargas DL, Tyor WR. Update on disease-modifying therapies for multiple sclerosis. J Investig Med 2017; 65:883-891. [PMID: 28130412 DOI: 10.1136/jim-2016-000339] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/02/2017] [Indexed: 01/12/2023]
Abstract
Multiple sclerosis (MS) is an autoimmune, demyelinating disease of the central nervous system (CNS). It predominantly affects young women and is one of the most common causes of disability in young adults. MS is characterized by formation of white matter lesions in the CNS as a result of inflammation, demyelination, and axonal loss. Treatment has been a focus of neurological research for over 60 years. A number of disease-modifying therapies (DMTs) have become available making MS a treatable disease. These compounds target the inflammatory response in MS. They work by decreasing the chances of relapse, decreasing the chances of new lesion formation seen on MRI of the CNS and slowing the accumulation of disability. The first drugs for MS to be available were interferon-β and glatiramer acetate. These work by modulating the inflammatory response via different mechanisms that are briefly discussed. Newer agents have since become available and have significantly changed the dynamics of MS treatment. These include fingolimod, dimethyl fumarate and teriflunomide, which are oral agents. Other second-line and third-line Food and Drug Administration (FDA) approved medications include natalizumab and alemtuzumab. Natalizumab is considered one of the most potent treatments for relapse prevention. However, the high risk of progressive multifocal leukoencephalopathy (PML), which is caused by JC virus infection in the brain, tempers the more widespread use of this agent; nevertheless, JC virus antibody tests have helped to stratify the risk of PML. Alemtuzumab, which also has a considerable side effect profile, is likewise highly efficacious. Ocrelizumab, a monoclonal antibody to CD20 on B cells, is a highly effective agent for MS that is likely to be approved soon by the FDA. MS is a major contributor to healthcare costs and it is critical that healthcare providers be aware of the availability and benefits of DMTs. It is imperative that prompt and adequate treatment be established on diagnosis. Changes in therapy should be considered when there is evidence of disease activity as well as accumulation of disability or safety or tolerability concerns.
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Affiliation(s)
- Diana L Vargas
- Department of Neurology, Emory University School of Medicine, Neurology Service, Atlanta VA Medical Center, Decatur, Georgia, USA
| | - William R Tyor
- Department of Neurology, Emory University School of Medicine, Neurology Service, Atlanta VA Medical Center, Decatur, Georgia, USA
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11
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12
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Braley TJ, Chervin RD. A practical approach to the diagnosis and management of sleep disorders in patients with multiple sclerosis. Ther Adv Neurol Disord 2015; 8:294-310. [PMID: 26600873 DOI: 10.1177/1756285615605698] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Patients with multiple sclerosis (MS) are at increased risk for comorbid sleep disturbances, which can profoundly contribute to poor functional status and fatigue. Insomnia, sleep-disordered breathing, and restless legs syndrome are among the most common sleep disorders experienced by patients with MS. Despite their impact, these underlying sleep disorders may escape routine clinical evaluations in persons with MS, thereby leading to missed opportunities to optimize functional status and quality of life in patients with MS. A practical, systematic approach to the evaluation and treatment of sleep disorders in MS, in the context of MS-specific variables that may influence risk for these conditions or response to therapy, is recommended to facilitate early diagnosis and successful treatment. This review summarizes the most common sleep disorders experienced by persons with MS, and offers a practical approach to diagnosis and management of these conditions.
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Affiliation(s)
- Tiffany J Braley
- Assistant Professor, Department of Neurology, Multiple Sclerosis and Sleep Disorders Centers, University of Michigan, C728 Med-Inn Building, 1500 E. Medical Center Dr., Ann Arbor, MI 48109, USA
| | - Ronald D Chervin
- Michael S. Aldrich Professor of Sleep Medicine and Professor of Neurology, Department of Neurology and Sleep Disorders Center, University of Michigan, Ann Arbor, MI, USA
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