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1.
Neurol Neuroimmunol Neuroinflamm ; 11(5): e200289, 2024 Sep.
Article de Anglais | MEDLINE | ID: mdl-39088840

RÉSUMÉ

BACKGROUND AND OBJECTIVES: Previous studies have indicated that alcohol consumption is associated with multiple sclerosis (MS) disease progression. We aimed to study the influence of alcohol consumption habits on disease progression and health-related quality of life in MS. METHODS: We categorized patients from 2 population-based case-control studies by alcohol consumption habits at diagnosis and followed them up to 15 years after diagnosis through the Swedish MS registry regarding changes in the Expanded Disability Status Scale (EDSS) and Multiple Sclerosis Impact Scale 29 (MSIS-29). We used Cox regression models with 95% confidence intervals (CIs) using 24-week confirmed disability worsening, EDSS 3, EDSS 4, and physical and psychological worsening from the patient's perspective as end points. RESULTS: Our study comprised 9,051 patients with MS, with a mean age of 37.5 years at baseline/diagnosis. Compared with nondrinking, low and moderate alcohol consumption was associated with reduced risk of EDSS-related unfavorable outcomes (hazard ratios between 0.81 and 0.90) and with reduced risk of physical worsening. The inverse association was confined to relapsing-remitting MS and was more pronounced among women. High alcohol consumption did not significantly affect disease progression. The inverse relationship between low-moderate alcohol consumption and disability progression became stronger when we only included those who had not changed their alcohol consumption during follow-up (hazard ratios between 0.63 and 0.71). There were no differences in measures of disability at baseline between drinkers who continued drinking alcohol after diagnosis and those who later discontinued. Our findings speak against bias due to reverse causation. DISCUSSION: Low and moderate alcohol consumption was associated with more favorable outcomes in relapsing-remitting MS, compared with nondrinking, while there was no significant influence of high alcohol consumption on disease outcomes.


Sujet(s)
Consommation d'alcool , Évolution de la maladie , Humains , Femelle , Mâle , Consommation d'alcool/épidémiologie , Adulte , Suède/épidémiologie , Adulte d'âge moyen , Études cas-témoins , Enregistrements , Sclérose en plaques récurrente-rémittente/épidémiologie , Sclérose en plaques récurrente-rémittente/physiopathologie , Sclérose en plaques , Qualité de vie , Évaluation de l'invalidité , Études de suivi
2.
BMJ Case Rep ; 17(7)2024 Jul 31.
Article de Anglais | MEDLINE | ID: mdl-39089726

RÉSUMÉ

Anti-N-methyl-D-aspartate receptor (NMDAR) encephalitis is an autoimmune disease that has been rarely associated with AQP4-IgG and MOG-IgG demyelinating diseases, and even more rarely with multiple sclerosis. We present the case of a woman in her 40s with confirmed NMDAR encephalitis and coexistent fulminant relapse of multiple sclerosis treated with alemtuzumab 6 years prior, who had a favourable outcome following treatment with ocrelizumab. We proceed to systematic review of similar reported cases, finding a lower than anticipated prevalence of underlying malignancy compared with isolated NMDAR encephalitis, in this rare overlap syndrome.


Sujet(s)
Encéphalite à anticorps anti-récepteur N-méthyl-D-aspartate , Récidive , Humains , Femelle , Encéphalite à anticorps anti-récepteur N-méthyl-D-aspartate/diagnostic , Encéphalite à anticorps anti-récepteur N-méthyl-D-aspartate/traitement médicamenteux , Adulte , Sclérose en plaques/traitement médicamenteux , Alemtuzumab/usage thérapeutique , Anticorps monoclonaux humanisés/usage thérapeutique
3.
Front Immunol ; 15: 1416074, 2024.
Article de Anglais | MEDLINE | ID: mdl-39086476

RÉSUMÉ

Introduction: Progressive Multifocal Leukoencephalopathy (PML) is a rare and deadly demyelinating disease caused by JC virus (JCV) replication in the central nervous system. PML occurs exclusively in patients with severe underlying immune deficiencies, including AIDS and hematological malignancies. PML has also emerged as a significant threat to patients on potent new immunosuppressive biologics, including natalizumab in multiple sclerosis. Methods: Here, we developed an IFN-γ release assay (IGRA) that mainly detects JCV-specific effector memory T cells and effectors T cells in the blood. Results: This assay was frequently positive in patients with active PML (with a positive JCV PCR in CSF) of various underlying immunosuppression causes (84% sensitivity). Only 3% of healthy donors had a positive response (97% specificity). The frequency of positivity also increased in multiple sclerosis patients according to the time on natalizumab (up to 36% in patients treated for more than 48 months, who are considered at a higher risk of PML). Discussion: The results show this assay's frequent or increased positivity in patients with PML or an increased risk of PML, respectively. The assay may help to stratify the risk of PML.


Sujet(s)
Interféron gamma , Virus JC , Leucoencéphalopathie multifocale progressive , Cellules T mémoire , Humains , Leucoencéphalopathie multifocale progressive/immunologie , Leucoencéphalopathie multifocale progressive/diagnostic , Leucoencéphalopathie multifocale progressive/étiologie , Mâle , Virus JC/immunologie , Femelle , Adulte d'âge moyen , Adulte , Cellules T mémoire/immunologie , Cellules T mémoire/métabolisme , Natalizumab/usage thérapeutique , Sujet âgé , Sclérose en plaques/immunologie , Sclérose en plaques/traitement médicamenteux
4.
Front Immunol ; 15: 1412668, 2024.
Article de Anglais | MEDLINE | ID: mdl-39086478

RÉSUMÉ

Rituximab has been used to treat MS patients in Iceland for over a decade. However, long-term effect of rituximab on leukocyte populations has not yet been elucidated. By retrospective analysis of flow cytometric data from 349 patients visiting the neurological ward at The National University Hospital of Iceland from 2012 to 2023 for rituximab treatment, the long-term effect of rituximab and whether the effect was dose dependent (1000mg vs 500mg) was evaluated. No difference was detected in efficacy of B cell depletion in patients treated with 500mg as an initial dose of rituximab when compared to 1000mg. Long-term use of rituximab led to an increase in T cell count (p=0,0015) in patients receiving 3-8 doses of rituximab (1.5-8 years of treatment). The increase occurred in both CD4+ (p=0,0028) and CD8+ T cells (p=0,0015) and led to a decrease in the CD4/CD8 ratio (p=0,004). The most notable difference lies in reshaping the balance between näive and effector CD8+ T cells. The clinical implications of long-term treatment with rituximab and its effect on the T cell pool needs to be explored further. Since no difference in B cell depletion was detected between the two patient groups, 1000mg as an initial dose might be excessive, suggesting a personalized dosing regimen might have therapeutic and financial advantages.


Sujet(s)
Sclérose en plaques , Rituximab , Humains , Rituximab/administration et posologie , Rituximab/usage thérapeutique , Rituximab/effets indésirables , Mâle , Femelle , Adulte , Adulte d'âge moyen , Sclérose en plaques/traitement médicamenteux , Sclérose en plaques/immunologie , Études rétrospectives , Numération des lymphocytes , Facteurs immunologiques/administration et posologie , Facteurs immunologiques/usage thérapeutique , Sujet âgé , Rapport CD4-CD8 , Lymphocytes B/immunologie , Lymphocytes B/effets des médicaments et des substances chimiques , Lymphocytes T CD4+/immunologie , Lymphocytes T CD4+/effets des médicaments et des substances chimiques
5.
Brain Impair ; 252024 Aug.
Article de Anglais | MEDLINE | ID: mdl-39094010

RÉSUMÉ

Background People with Multiple Sclerosis (MS) have unique housing and support needs that are essential for maintaining independence at home; however, there is limited research to guide the design of community living options for this population. The aim of this study was to examine housing and support needs and preferences of people with MS with the intention to inform the planning of a co-designed intervention based on the study's findings. Methods Using the Knowledge to Action (KTA) framework, quantitative (n =79) and qualitative (n =6) data from people with MS were extracted and integrated from projects completed by the research team that explored the housing and support needs and preferences of people with disability. Results were synthesised and presented to a reference group for validation, contextualisation, and adaptation to the Australian context. Results High physical support needs were common across participants. People most commonly required home modifications to improve accessibility, such as ramps, equipment such as heating and cooling, and assistive technology. Many people required more than 8 hours per day of paid support. Moving into individualised housing facilitated independence and community reintegration. People reported gaps between what they wanted from support workers and what they received, citing individual and systemic barriers. Conclusion People with MS have support needs that require proactive and responsive funding arrangements, housing design and support provision. In line with KTA principles, findings will inform the planning of a co-designed intervention that involves people with lived experience of MS and other stakeholders to influence policy and improve home and living outcomes for this population.


Sujet(s)
Logement , Sclérose en plaques , Humains , Sclérose en plaques/thérapie , Sclérose en plaques/psychologie , Mâle , Femelle , Adulte d'âge moyen , Adulte , Australie , Personnes handicapées/psychologie , Personnes handicapées/rééducation et réadaptation , Vie autonome , Sujet âgé , Soutien social
6.
Sci Rep ; 14(1): 17823, 2024 Aug 01.
Article de Anglais | MEDLINE | ID: mdl-39090252

RÉSUMÉ

So far, only a small number of medications are effective in progressive multiple sclerosis (MS). The sphingosine-1-phosphate-receptor (S1PR)-1,5 modulator siponimod, licensed for progressive MS, is acting both on peripheral immune cells and in the central nervous system (CNS). So far it remains elusive, whether those effects are related to the neurotrophin brain derived neurotrophic factor (BDNF). We hypothesized that BDNF in immune cells might be a prerequisite to reduce disease activity in experimental autoimmune encephalomyelitis (EAE) and prevent neurotoxicity. MOG35-55 immunized wild type (WT) and BDNF knock-out (BDNFko) mice were treated with siponimod or vehicle and scored daily in a blinded manner. Immune cell phenotyping was performed via flow cytometry. Immune cell infiltration and demyelination of spinal cord were assessed using immunohistochemistry. In vitro, effects on neurotoxicity and mRNA regulation were investigated using dorsal root ganglion cells incubated with EAE splenocyte supernatant. Siponimod led to a dose-dependent reduction of EAE scores in chronic WT EAE. Using a suboptimal dosage of 0.45 µg/day, siponimod reduced clinical signs of EAE independent of BDNF-expression in immune cells in accordance with reduced infiltration and demyelination. Th and Tc cells in secondary lymphoid organs were dose-dependently reduced, paralleled with an increase of regulatory T cells. In vitro, neuronal viability trended towards a deterioration after incubation with EAE supernatant; siponimod showed a slight rescue effect following treatment of WT splenocytes. Neuronal gene expression for CCL2 and CX3CL1 was elevated after incubation with EAE supernatant, which was reversed after siponimod treatment for WT, but not for BNDFko. Apoptosis markers and alternative death pathways were not affected. Siponimod exerts both anti-inflammatory and neuroprotective effects, partially related to BDNF-expression. This might in part explain effectiveness during progression in MS and could be a target for therapy.


Sujet(s)
Azétidines , Composés benzyliques , Facteur neurotrophique dérivé du cerveau , Encéphalomyélite auto-immune expérimentale , Souris knockout , Sclérose en plaques , Animaux , Facteur neurotrophique dérivé du cerveau/métabolisme , Encéphalomyélite auto-immune expérimentale/traitement médicamenteux , Encéphalomyélite auto-immune expérimentale/métabolisme , Encéphalomyélite auto-immune expérimentale/anatomopathologie , Souris , Azétidines/pharmacologie , Azétidines/usage thérapeutique , Composés benzyliques/pharmacologie , Composés benzyliques/usage thérapeutique , Sclérose en plaques/traitement médicamenteux , Sclérose en plaques/métabolisme , Modèles animaux de maladie humaine , Modulateurs des récepteurs de la sphingosine 1 phosphate/pharmacologie , Modulateurs des récepteurs de la sphingosine 1 phosphate/usage thérapeutique , Souris de lignée C57BL , Femelle , Moelle spinale/métabolisme , Moelle spinale/effets des médicaments et des substances chimiques , Moelle spinale/anatomopathologie
7.
Proc Natl Acad Sci U S A ; 121(32): e2400153121, 2024 Aug 06.
Article de Anglais | MEDLINE | ID: mdl-39088391

RÉSUMÉ

Although many cytokine pathways are important for dendritic cell (DC) development, it is less clear what cytokine signals promote the function of mature dendritic cells. The signal transducer and activator of transcription 4 (STAT4) promotes protective immunity and autoimmunity downstream of proinflammatory cytokines including IL-12 and IL-23. In experimental autoimmune encephalomyelitis (EAE), an animal model of multiple sclerosis (MS), Stat4-/- mice are resistant to the development of inflammation and paralysis. To define whether STAT4 is required for intrinsic signaling in mature DC function, we used conditional mutant mice in the EAE model. Deficiency of STAT4 in CD11c-expressing cells resulted in decreased T cell priming and inflammation in the central nervous system. EAE susceptibility was recovered following adoptive transfer of wild-type bone marrow-derived DCs to mice with STAT4-deficient DCs, but not adoptive transfer of STAT4- or IL-23R-deficient DCs. Single-cell RNA-sequencing (RNA-seq) identified STAT4-dependent genes in DC subsets that paralleled a signature in MS patient DCs. Together, these data define an IL-23-STAT4 pathway in DCs that is key to DC function during inflammatory disease.


Sujet(s)
Cellules dendritiques , Encéphalomyélite auto-immune expérimentale , Interleukine-23 , Facteur de transcription STAT-4 , Transduction du signal , Animaux , Facteur de transcription STAT-4/métabolisme , Cellules dendritiques/immunologie , Cellules dendritiques/métabolisme , Interleukine-23/métabolisme , Interleukine-23/immunologie , Souris , Encéphalomyélite auto-immune expérimentale/immunologie , Encéphalomyélite auto-immune expérimentale/métabolisme , Souris knockout , Sclérose en plaques/immunologie , Sclérose en plaques/métabolisme , Sclérose en plaques/anatomopathologie , Système nerveux central/métabolisme , Système nerveux central/immunologie , Inflammation/métabolisme , Inflammation/immunologie , Transfert adoptif , Souris de lignée C57BL , Humains , Lymphocytes T/immunologie , Lymphocytes T/métabolisme
8.
Drug Des Devel Ther ; 18: 3025-3042, 2024.
Article de Anglais | MEDLINE | ID: mdl-39050801

RÉSUMÉ

B cells are critical to the pathogenesis of multiple sclerosis (MS), an autoimmune disease of the central nervous system. B cell depletion using anti-CD20 monoclonal antibodies (mAbs) has proven to be an extremely successful treatment strategy, with profound suppression of both clinical and radiological evidence of focal inflammatory disease. Several anti-CD20 mAbs are now licensed for use in MS, with ublituximab being the latest to gain regulatory approval. The unique properties of each of the anti-CD20 mAb may result in nuanced differences in timing, duration and depth of B cell depletion, with the potential for such differences to have a clinical relevance to both drug efficacy and adverse effects. In this review, we summarize the design, development, and current place in MS therapy for ublituximab.


Sujet(s)
Anticorps monoclonaux , Sclérose en plaques , Humains , Sclérose en plaques/traitement médicamenteux , Anticorps monoclonaux/usage thérapeutique , Anticorps monoclonaux/pharmacologie , Anticorps monoclonaux/composition chimique , Développement de médicament , Antigènes CD20/immunologie , Conception de médicament , Lymphocytes B/effets des médicaments et des substances chimiques , Lymphocytes B/immunologie , Animaux
9.
Neurology ; 103(4): e209706, 2024 Aug 27.
Article de Anglais | MEDLINE | ID: mdl-39052965

RÉSUMÉ

Optic neuritis (ON) can present as the first demyelinating attack in both multiple sclerosis (MS) and myelin oligodendrocyte glycoprotein (MOG) antibody-associated disease (MOGAD), which may require different treatment depending on the final diagnosis. We present 2 young Hispanic women who presented with ON during pregnancy, one of whom was diagnosed with MS and the other with MOGAD. We describe key clinical features to help differentiate between MS and MOGAD including ON features, brain and spinal MRI, CSF profiles, and serum MOG and aquaporin-4 (AQP-4) antibodies, which all can help guide clinicians to an ultimate diagnosis. Pregnancy is usually considered an immunotolerant state because complex immunologic shifts arising to support tolerance of the developing fetus seem to decrease the risk of relapses. However, relapses may still occur during pregnancy, and relapse rates increase immediately postpartum. Our cases raise the possibility that young Hispanic patients may face increased risk of demyelinating disease activity even during the relatively immunotolerant state of pregnancy. A high index of suspicion for demyelinating disease should be maintained to accelerate diagnosis and prevent disability.


Sujet(s)
Hispanique ou Latino , Sclérose en plaques , Glycoprotéine MOG , Névrite optique , Complications de la grossesse , Humains , Femelle , Névrite optique/diagnostic , Grossesse , Glycoprotéine MOG/immunologie , Sclérose en plaques/ethnologie , Sclérose en plaques/diagnostic , Adulte , Jeune adulte , Diagnostic différentiel , Aquaporine-4/immunologie , Imagerie par résonance magnétique , Autoanticorps/sang
10.
Medicine (Baltimore) ; 103(28): e38680, 2024 Jul 12.
Article de Anglais | MEDLINE | ID: mdl-38996106

RÉSUMÉ

Multiple Sclerosis (MS), one of the most common neurological diseases, plays a major role in the ailments of adults. Studies on the role of homocysteine (Hcy) and folic acid in causing cognitive disorders in patients diagnosed with MS are still ongoing. This study aimed to evaluate the serum levels of folic acid and Hcy related to cognitive impairment in patients with multiple sclerosis. This prospective clinical study was conducted on 57 patients diagnosed with MS who were referred to Firoozgar Hospital, Tehran, Iran (Between November 2019 and September 2021). Demographic information and clinical characteristics of enrolled patients were recorded in a predesigned checklist. These characteristics were comprised of outcomes related to the Brief International Cognitive Assessment for MS, and the patient's Hcy and acid folic levels. Data were analyzed using SPSS version 25. Out of 57 enrolled patients, 39 subjects (68.4%) were female and 18 subjects (31.6%) were male, with a mean age of 36.87 ±â€…9.40 years old. In terms of disease time span, there was a mean duration of 3.80 ±â€…4.94 years (range: 1-23 years). There were no significant differences between the mean score of Brief International Cognitive Assessment for MS scale with patient's sex (P value: .88), and disease duration of patients (P value: .86). There was no significant relationship between the serum levels of acid folic and Hcy with cognitive impairment (P value > .05). The study results revealed that there were no significant relationships between the folic acid, Hcy levels, disease duration, and the type of MS disease with the severity of cognitive impairment. More randomized controlled clinical trials are needed to confirm the relationships between the folic acid and Hcy levels with cognitive impairment in patients with MS.


Sujet(s)
Dysfonctionnement cognitif , Acide folique , Homocystéine , Sclérose en plaques , Humains , Acide folique/sang , Femelle , Mâle , Homocystéine/sang , Adulte , Dysfonctionnement cognitif/sang , Dysfonctionnement cognitif/étiologie , Dysfonctionnement cognitif/diagnostic , Sclérose en plaques/sang , Sclérose en plaques/complications , Études prospectives , Adulte d'âge moyen , Iran
11.
Transl Vis Sci Technol ; 13(7): 13, 2024 Jul 01.
Article de Anglais | MEDLINE | ID: mdl-39017629

RÉSUMÉ

Purpose: Several machine learning studies have used optical coherence tomography (OCT) for multiple sclerosis (MS) classification with promising outcomes. Infrared reflectance scanning laser ophthalmoscopy (IR-SLO) captures high-resolution fundus images, commonly combined with OCT for fixed B-scan positions. However, no machine learning research has utilized IR-SLO images for automated MS diagnosis. Methods: This study utilized a dataset comprised of IR-SLO images and OCT data from Isfahan, Iran, encompassing 32 MS and 70 healthy individuals. A number of convolutional neural networks (CNNs)-namely, VGG-16, VGG-19, ResNet-50, ResNet-101, and a custom architecture-were trained with both IR-SLO images and OCT thickness maps as two separate input datasets. The highest performing models for each modality were then integrated to create a bimodal model that receives the combination of OCT thickness maps and IR-SLO images. Subject-wise data splitting was employed to prevent data leakage among training, validation, and testing sets. Results: Overall, images of the 102 patients from the internal dataset were divided into test, validation, and training subsets. Subsequently, we employed a bootstrapping approach on the training data through iterative sampling with replacement. The performance of the proposed bimodal model was evaluated on the internal test dataset, demonstrating an accuracy of 92.40% ± 4.1% (95% confidence interval [CI], 83.61-98.08), sensitivity of 95.43% ± 5.75% (95% CI, 83.71-100.0), specificity of 92.82% ± 3.72% (95% CI, 81.15-96.77), area under the receiver operating characteristic (AUROC) curve of 96.99% ± 2.99% (95% CI, 86.11-99.78), and area under the precision-recall curve (AUPRC) of 97.27% ± 2.94% (95% CI, 86.83-99.83). Furthermore, to assess the model generalization ability, we examined its performance on an external test dataset following the same bootstrap methodology, achieving promising results, with accuracy of 85.43% ± 0.08% (95% CI, 71.43-100.0), sensitivity of 97.33% ± 0.06% (95% CI, 83.33-100.0), specificity of 84.6% ± 0.10% (95% CI, 71.43-100.0), AUROC curve of 99.67% ± 0.02% (95% CI, 95.63-100.0), and AUPRC of 99.65% ± 0.02% (95% CI, 94.90-100.0). Conclusions: Incorporating both modalities improves the performance of automated diagnosis of MS, showcasing the potential of utilizing IR-SLO as a complementary tool alongside OCT. Translational Relevance: Should the results of our proposed bimodal model be validated in future work with larger and more diverse datasets, diagnosis of MS based on both OCT and IR-SLO can be reliably integrated into routine clinical practice.


Sujet(s)
Sclérose en plaques , , Ophtalmoscopie , Tomographie par cohérence optique , Humains , Tomographie par cohérence optique/méthodes , Sclérose en plaques/imagerie diagnostique , Sclérose en plaques/anatomopathologie , Sclérose en plaques/diagnostic , Femelle , Ophtalmoscopie/méthodes , Adulte , Mâle , Courbe ROC , Adulte d'âge moyen , Apprentissage machine , Rayons infrarouges
12.
J Nurs Res ; 32(4): e341, 2024 Aug 01.
Article de Anglais | MEDLINE | ID: mdl-39037382

RÉSUMÉ

BACKGROUND: Patients with multiple sclerosis (MS) face a wide range of symptoms, including physical disability, imbalance, motor disorders, and acute and chronic pain. The psychosocial consequences of these symptoms may limit social well-being and quality of life in these patients. PURPOSE: The aim of the study was to assess self-perceived social isolation among patients with MS and its relationship with pain intensity and disability status. METHODS: This cross-sectional study was conducted on 200 patients with MS referred to neurology wards and clinics, the MS Association, and rehabilitation centers. Data collection tools used included a demographic information form, Numeric Pain Rating Scale, Expanded Disability Status Scale, and Social Isolation Questionnaire. RESULTS: The mean scores of 4.66 ( SD = 1.15) for disability and 4.18 ( SD = 2.22) for pain intensity both indicated moderate levels of both. Of the sample, 21.5% (43 patients) reported no pain, 22.5% ( n = 45) reported mild pain, 35% ( n = 70) reported moderate pain, and 21% ( n = 42) reported intense pain. The average social isolation score was 63.52 ( SD = 3.32), which is higher than the theoretical average. Of the sample, 44.5% reported low social isolation, whereas 55.5% indicated high social isolation. Gender, duration of MS, economic status, disability status, and pain intensity were all found to be significantly associated with social isolation in patients with MS (all p s < .05). CONCLUSIONS: Based on the findings, comprehensive support plans are necessary to improve psychosocial well-being, social life, and quality of life in patients with MS.


Sujet(s)
Sclérose en plaques , Qualité de vie , Isolement social , Humains , Sclérose en plaques/psychologie , Sclérose en plaques/complications , Mâle , Femelle , Études transversales , Isolement social/psychologie , Adulte d'âge moyen , Adulte , Enquêtes et questionnaires , Qualité de vie/psychologie , Douleur/psychologie , Douleur/étiologie , Personnes handicapées/psychologie , Personnes handicapées/statistiques et données numériques , Évaluation de l'invalidité , Mesure de la douleur/méthodes , Sujet âgé
13.
BMC Neurol ; 24(1): 255, 2024 Jul 24.
Article de Anglais | MEDLINE | ID: mdl-39048953

RÉSUMÉ

BACKGROUND: Multiple Sclerosis (MS) a central nervous system autoimmune disorder, mainly affecting young adults and more prevalent among women, can lead to sexual dysfunction (SD) among both males and females with MS. Female sexual dysfunction can be defined as dyspareunia, a lack of sexual desire, disorders in the arousal and orgasm phases, and sexual pain disorders. The purpose of this study is to investigate the changes in sexual function among females with MS whose treatment was switched from first-line injectable medications to other agents after a six-month duration. And assess the changes in all three domains of SD. METHODS: In this longitudinal study females diagnosed with MS, aged between 18 and 50 years old, and were candidates for switching their treatment from interferon beta-1a (intra-muscular and subcutaneous), and Glatiramer Acetate (GA), to Fingolimod, Dimethyl Fumarate (DMF), or Natalizumab (NTZ) due to patients' convenience and tolerability and adverse events were included. "Multiple Sclerosis Intimacy and Sexuality Questionnaire-19" was used to evaluate the SD changes before and six months after the new treatment initiation. Statistical analysis was conducted using SPSS V.24 software. Histograms and the Shapiro-Wilk test were used to assess the normality of the variables; due to the non-normal distribution of quantitative variables (except for age), the Wilcoxon signed-rank test was used to compare the scores, before and six months after the medication change. The level of significance was considered less than 0.05. RESULTS: Out of 107 female participants (average age: 35.09 ± 5.61), The mean of overall MSISQ-19 scores, before and six months after the medication change were not significant (p-value = 0.091). However, considering the subdomains, the medication changes only affected the tertiary subdomain of MSISQ-19 (p-value = 0.017). Still, the scores of other subdomains did not change significantly (p-value = 0.761 for primary SD and 0.479 for secondary SD). Also, there wasn't any significant difference between EDSS before and after the medication change (p-value = 0.461). CONCLUSIONS: To our knowledge, this was the first study, assessing the effect of MS medication change on the improvement of SD among patients. According to the results of the presented cross-sectional study, we found that during a six-month period, the tertiary subdomain of MSISQ-19 symptoms improved significantly, while the changes in other SD domains were not significant.


Sujet(s)
Acétate de glatiramère , Sclérose en plaques , Troubles sexuels d'origine physiologique , Humains , Femelle , Adulte , Sclérose en plaques/traitement médicamenteux , Sclérose en plaques/complications , Adulte d'âge moyen , Troubles sexuels d'origine physiologique/étiologie , Troubles sexuels d'origine physiologique/traitement médicamenteux , Études longitudinales , Acétate de glatiramère/administration et posologie , Acétate de glatiramère/usage thérapeutique , Jeune adulte , Facteurs immunologiques/administration et posologie , Facteurs immunologiques/usage thérapeutique , Fumarate de diméthyle/administration et posologie , Fumarate de diméthyle/usage thérapeutique , Adolescent , Immunosuppresseurs/usage thérapeutique , Immunosuppresseurs/administration et posologie , Interféron bêta-1a/administration et posologie , Interféron bêta-1a/usage thérapeutique , Substitution de médicament/méthodes , Chlorhydrate de fingolimod/usage thérapeutique , Chlorhydrate de fingolimod/administration et posologie , Natalizumab/administration et posologie , Natalizumab/usage thérapeutique
14.
Neurology ; 103(3): e209677, 2024 Aug 13.
Article de Anglais | MEDLINE | ID: mdl-39018513

RÉSUMÉ

The optic nerve is frequently involved in multiple sclerosis (MS). However, MRI of the optic nerve is considered optional in the differential diagnosis of optic neuropathy symptoms either at presentation or in established MS. In addition, unlike spinal cord imaging in comparable scenarios, no role is currently recommended for optic nerve MRI in patients presenting with optic neuritis for its confirmation, to plan therapeutic strategy, within the MS diagnostic framework, nor for the detection of subclinical activity in established MS. In this article, evidence related to these 3 aspects will be summarized and gaps in knowledge will be highlighted, including (1) the acquisition challenges and novel sequences that assess pathologic changes within the anterior visual pathways; (2) the clinical implications of quantitative magnetic resonance studies of the optic nerve, focusing on atrophy measures, magnetization transfer, and diffusion tensor imaging; and (3) the relevant clinical studies performed to date. Finally, an algorithm for the application of optic nerve MRI will be proposed to guide future studies aimed at addressing our knowledge gaps.


Sujet(s)
Imagerie par résonance magnétique , Sclérose en plaques , Nerf optique , Humains , Sclérose en plaques/imagerie diagnostique , Sclérose en plaques/thérapie , Imagerie par résonance magnétique/méthodes , Nerf optique/imagerie diagnostique , Nerf optique/anatomopathologie , Névrite optique/imagerie diagnostique , Névrite optique/thérapie , Prise en charge de la maladie
15.
Neurosciences (Riyadh) ; 29(3): 153-160, 2024 Jul.
Article de Anglais | MEDLINE | ID: mdl-38981633

RÉSUMÉ

Tumefactive demyelinating lesion is a variant of multiple sclerosis that is a diagnostic challenge. Tumefactive demyelinating lesion requires extensive work-up as its clinical and radiological features are often indistinguishable from other central nervous system lesions, such as tumors. Diagnosis is further complicated by the increasing recognition that tumefactive demyelinating lesions can occur alongside, evolve into, or develop from numerous conditions other than multiple sclerosis, pointing to a possible overlapping etiology. We review herein relevant studies from 2017 onwards to provide a current view on the pathogenesis, clinical and imaging findings, novel diagnostic techniques for differential diagnoses, and management of tumefactive demyelinating lesions.


Sujet(s)
Maladies démyélinisantes , Sclérose en plaques , Humains , Maladies démyélinisantes/imagerie diagnostique , Maladies démyélinisantes/anatomopathologie , Maladies démyélinisantes/diagnostic , Sclérose en plaques/imagerie diagnostique , Sclérose en plaques/diagnostic , Sclérose en plaques/anatomopathologie , Diagnostic différentiel , Imagerie par résonance magnétique
16.
Doc Ophthalmol ; 149(1): 23-45, 2024 Aug.
Article de Anglais | MEDLINE | ID: mdl-38955958

RÉSUMÉ

PURPOSE: Multiple sclerosis (MS) is a neuro-inflammatory disease affecting the central nervous system (CNS), where the immune system targets and damages the protective myelin sheath surrounding nerve fibers, inhibiting axonal signal transmission. Demyelinating optic neuritis (ON), a common MS symptom, involves optic nerve damage. We've developed NeuroVEP, a portable, wireless diagnostic system that delivers visual stimuli through a smartphone in a headset and measures evoked potentials at the visual cortex from the scalp using custom electroencephalography electrodes. METHODS: Subject vision is evaluated using a short 2.5-min full-field visual evoked potentials (ffVEP) test, followed by a 12.5-min multifocal VEP (mfVEP) test. The ffVEP evaluates the integrity of the visual pathway by analyzing the P100 component from each eye, while the mfVEP evaluates 36 individual regions of the visual field for abnormalities. Extensive signal processing, feature extraction methods, and machine learning algorithms were explored for analyzing the mfVEPs. Key metrics from patients' ffVEP results were statistically evaluated against data collected from a group of subjects with normal vision. Custom visual stimuli with simulated defects were used to validate the mfVEP results which yielded 91% accuracy of classification. RESULTS: 20 subjects, 10 controls and 10 with MS and/or ON were tested with the NeuroVEP device and a standard-of-care (SOC) VEP testing device which delivers only ffVEP stimuli. In 91% of the cases, the ffVEP results agreed between NeuroVEP and SOC device. Where available, the NeuroVEP mfVEP results were in good agreement with Humphrey Automated Perimetry visual field analysis. The lesion locations deduced from the mfVEP data were consistent with Magnetic Resonance Imaging and Optical Coherence Tomography findings. CONCLUSION: This pilot study indicates that NeuroVEP has the potential to be a reliable, portable, and objective diagnostic device for electrophysiology and visual field analysis for neuro-visual disorders.


Sujet(s)
Potentiels évoqués visuels , Sclérose en plaques , Névrite optique , Humains , Potentiels évoqués visuels/physiologie , Névrite optique/diagnostic , Névrite optique/physiopathologie , Sclérose en plaques/diagnostic , Sclérose en plaques/physiopathologie , Femelle , Mâle , Adulte , Champs visuels/physiologie , Cortex visuel/physiopathologie , Électroencéphalographie/instrumentation , Adulte d'âge moyen , Projets pilotes , Stimulation lumineuse
17.
Mol Cell Biochem ; 479(7): 1643-1671, 2024 Jul.
Article de Anglais | MEDLINE | ID: mdl-38977625

RÉSUMÉ

Multiple sclerosis (MS) is a chronic neurodegenerative, inflammatory, and demyelinating disease of the central nervous system (CNS). Current medicines are not sufficient to control the inflammation and progressive damage to the CNS that is known in MS. These drawbacks highlight the need for novel treatment options. Cell therapy can now be used to treat complex diseases when conventional therapies are ineffective. Mesenchymal stem cells (MSCs) are a diverse group of multipotential non-hematopoietic stromal cells which have immunomodulatory, neurogenesis, and remyelinating capacity. Their advantageous effects mainly rely on paracrine, cell-cell communication and differentiation properties which introduced them as excellent candidates for MS therapy. Exosomes, as one of the MSCs secretomes, have unique properties that make them highly promising candidates for innovative approach in regenerative medicine. This review discusses the therapeutic potential of MSCs and their derived exosomes as a novel treatment for MS, highlighting the differences between these two approaches.


Sujet(s)
Exosomes , Cellules souches mésenchymateuses , Sclérose en plaques , Humains , Cellules souches mésenchymateuses/métabolisme , Exosomes/métabolisme , Sclérose en plaques/thérapie , Sclérose en plaques/anatomopathologie , Sclérose en plaques/métabolisme , Transplantation de cellules souches mésenchymateuses , Animaux , Communication cellulaire
18.
J Transl Med ; 22(1): 663, 2024 Jul 15.
Article de Anglais | MEDLINE | ID: mdl-39010157

RÉSUMÉ

The T-helper 17 (Th17) cell and regulatory T cell (Treg) axis plays a crucial role in the development of multiple sclerosis (MS), which is regarded as an immune imbalance between pro-inflammatory cytokines and the maintenance of immune tolerance. Mesenchymal stem cell (MSC)-mediated therapies have received increasing attention in MS research. In MS and its animal model experimental autoimmune encephalomyelitis, MSC injection was shown to alter the differentiation of CD4+T cells. This alteration occurred by inducing anergy and reduction in the number of Th17 cells, stimulating the polarization of antigen-specific Treg to reverse the imbalance of the Th17/Treg axis, reducing the inflammatory cascade response and demyelination, and restoring an overall state of immune tolerance. In this review, we summarize the mechanisms by which MSCs regulate the balance between Th17 cells and Tregs, including extracellular vesicles, mitochondrial transfer, metabolic reprogramming, and autophagy. We aimed to identify new targets for MS treatment using cellular therapy by analyzing MSC-mediated Th17-to-Treg polarization.


Sujet(s)
Tolérance immunitaire , Cellules souches mésenchymateuses , Sclérose en plaques , Lymphocytes T régulateurs , Cellules Th17 , Humains , Cellules Th17/immunologie , Lymphocytes T régulateurs/immunologie , Cellules souches mésenchymateuses/immunologie , Animaux , Sclérose en plaques/immunologie , Sclérose en plaques/thérapie , Transplantation de cellules souches mésenchymateuses
19.
Health Expect ; 27(4): e14152, 2024 Aug.
Article de Anglais | MEDLINE | ID: mdl-39010636

RÉSUMÉ

INTRODUCTION: Within 10 years of multiple sclerosis (MS) progression, nearly all women will have experienced symptoms associated with bladder, bowel and/or sexual health. Yet despite the impact these symptoms have on physical, psychological and social well-being, it remains an underserved area within the UK healthcare system. STUDY AIM: This research employs a participatory research approach framed within the principles of intersectional feminism to collaboratively investigate the lived experiences of pelvic floor dysfunction (PFD) and healthcare interactions among UK-based women with MS. SETTING AND PARTICIPANTS: Women residing in the United Kingdom with MS were invited to participate in online interviews facilitated by the primary author. ANALYSIS: A thematic framework analysis offering a structured yet adaptable approach to data collection and interpretation. RESULTS: One focus group involving four women with MS and seven individual, one-to-one interviews with women with MS provided insights into the challenges associated with navigating both MS and PFD. Four main themes included: Navigating MS and PFD; Cycles of Control; Mind, Mobility and Bladder Embodiment; Silenced Voices: The Impact of Taboos/Stigma/Dismissal on Preventing Access and Resistance through Collective Community. Six subthemes were also identified. Taken together, these themes cumulatively reflect PFD as an unmet healthcare need. CONCLUSION: Our findings underscore negative healthcare experiences, inadequate information provision and unmet needs related to PFD, emphasising the compounding effects of gender and disability biases. IMPACT: We hope that these insights can lay the groundwork for developing tailored therapeutic interventions and improved PFD healthcare for women with MS. Potential solutions include using existing MS support communities. PUBLIC CONTRIBUTIONS: Women with MS were actively involved in co-producing interview scripts for one-to-one interviews. The primary author shared study findings at an MS group event, engaging in discussions with over 30 individuals, including people with MS and their loved ones. MS advocates played a pivotal role in contextualising the study within the broader lived experience of MS.


Sujet(s)
Groupes de discussion , Sclérose en plaques , Recherche qualitative , Humains , Femelle , Sclérose en plaques/psychologie , Sclérose en plaques/thérapie , Adulte d'âge moyen , Royaume-Uni , Adulte , Troubles du plancher pelvien/psychologie , Troubles du plancher pelvien/thérapie , Entretiens comme sujet , Acceptation des soins par les patients/psychologie , Stigmate social
20.
Brain Behav ; 14(7): e3624, 2024 Jul.
Article de Anglais | MEDLINE | ID: mdl-39010704

RÉSUMÉ

INTRODUCTION: This study aims to evaluate the effects of sodium-glucose cotransporter 1 inhibitors (SGLT1i) and sodium-glucose cotransporter 2 inhibitors (SGLT2i) on neurodegenerative disorders and to investigate the role of hemoglobin A1c (HbA1c) levels. METHODS: Utilizing drug target Mendelian randomization, we employed single nucleotide polymorphisms (SNPs) proximal to the SLC5A1 and SLC5A2 genes to analyze the influence of SGLT1i and SGLT2i on Alzheimer's disease (AD), Parkinson's disease (PD), multiple sclerosis (MS), frontotemporal dementia (FTD), Lewy body dementia (LBD), and amyotrophic lateral sclerosis (ALS), with type 2 diabetes (T2D) as a positive control. An additional analysis examined the impact of HbA1c levels on the same disorders. RESULTS: SGLT1i exhibited a significant association with decreased risk for ALS and MS. Conversely, SGLT2i were linked to an increased risk of AD, PD, and MS. Elevated HbA1c levels, independent of SGLT1 and SGLT2 effects, were associated with an increased risk of PD. Sensitivity analyses supported the robustness of these findings. CONCLUSION: Our study suggests that SGLT1i may confer protection against ALS and MS, whereas SGLT2i could elevate the risk of AD, PD, and MS. Additionally, elevated HbA1c levels emerged as a risk factor for PD. These findings underscore the importance of personalized approaches in the utilization of SGLT inhibitors, considering their varying impacts on the risks of neurodegenerative diseases.


Sujet(s)
Hémoglobine glyquée , Analyse de randomisation mendélienne , Maladies neurodégénératives , Polymorphisme de nucléotide simple , Transporteur-1 sodium-glucose , Inhibiteurs du cotransporteur sodium-glucose de type 2 , Humains , Inhibiteurs du cotransporteur sodium-glucose de type 2/pharmacologie , Maladies neurodégénératives/génétique , Hémoglobine glyquée/métabolisme , Transporteur-1 sodium-glucose/génétique , Diabète de type 2/traitement médicamenteux , Diabète de type 2/génétique , Transporteur-2 sodium-glucose/génétique , Transporteur-2 sodium-glucose/métabolisme , Maladie de Parkinson/génétique , Maladie de Parkinson/traitement médicamenteux , Sclérose latérale amyotrophique/génétique , Sclérose latérale amyotrophique/traitement médicamenteux , Maladie d'Alzheimer/génétique , Maladie d'Alzheimer/traitement médicamenteux , Sclérose en plaques/traitement médicamenteux , Sclérose en plaques/génétique
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