1,721,130 research outputs found

    Interdisciplinary approach to opportunistic infections: staphylococcal meningitis in a patient with multiple sclerosis on treatment with dimethyl fumarate

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    Dear Editor, Multiple Sclerosis (MS) is a chronic infammatory disease of the central nervous system (CNS) representing a relevant cause of disability in young adults. In the last 20 years, new and emerging disease-modifying drugs (DMD) have been introduced in clinical practice revolutionizing the natural history of the disease [1]. However, immunomodulatory and immunosuppressive treatments for MS are associated with an increased risk of severe infections, which ranges from 0.2% to 2.6% [2

    Efficacy and Safety of Oral Therapies for Relapsing-Remitting Multiple Sclerosis

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    Disease-modifying therapies have now become standard treatment for multiple sclerosis. These include five oral therapies for relapsing-remitting multiple sclerosis, namely fingolimod, dimethyl fumarate, teriflunomide, cladribine, and siponimod, although there is some discrepancy on the relative efficacy and safety of these agents. To gain further insight on these oral agents in relapsing-remitting multiple sclerosis, we performed a narrative review of fingolimod, dimethyl fumarate, teriflunomide, cladribine, and siponimod. We limited the analysis to randomized clinical studies in which a comparator was used (i.e., placebo or other disease-modifying therapy). As relapsing-remitting multiple sclerosis is a chronic disease and treatment is lifelong, long-term outcomes were an additional focus. A total of 37 studies met inclusion criteria: 15 for fingolimod, 8 for dimethyl fumarate, 7 for teriflunomide, 4 for cladribine, and 3 for siponimod. All drugs showed some functional and magnetic resonance imaging benefit in nearly all clinical studies. The reduction in annual relapse rate was similar for fingolimod, dimethyl fumarate, and cladribine, and somewhat greater than for teriflunomide; there is limited information on the annual relapse rate for siponimod. For all drugs, the benefits reported at short follow-up times are broadly consistent with those seen at longer follow-up times. For fingolimod and dimethyl fumarate, there was a definite trend towards a progressively lower annual relapse rate with continuing treatment. The safety profile of all five drugs was considered to be acceptable, even after extended treatment. While these results should be treated with caution, they highlight that future head-to-head studies are needed to better understand the long-term benefits of disease-modifying therapies. Such information will be of value when considering the risk-benefit profile of these oral therapies

    The impact of neutralizing antibodies on the risk of disease worsening in interferon β-treated relapsing multiple sclerosis: a 5 year post-marketing study.

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    The impact of neutralizing antibodies (NAbs) on interferon b (IFNb) efficacy in MS patients is still an object of controversy. To evaluate the clinical response to IFNb during NAb-positive (NAb?) and NAb-negative (NAb-) statuses on a large population of relapsing remitting (RR) MS patients were followed up to 5 years. Sera from 567 RR MS patients treated with IFNb for 2–5 years were collected every 6–12 months and evaluated for NAb presence by a cytopathic effect assay. The relapse rate and expanded disability status scale (EDSS) score were assessed at baseline and every 6 months for each patient. A NAb? status was defined after two consecutive positive titers of NAbs[/= 20 neutralizing units (NU)/mL. Multivariate models were used to analyze the relapse rate, the time to first relapse, the time to confirmed EDSS score 4 during NAb? and NAb- statuses. A propensity score (PS) matching analysis was performed to assess the robustness of the multivariate models. Fourteen percent of patients became NAb? during the follow-up. A significant increase of the relapse rate (IRR = 1.38; p = 0.0247) and decrease of the time to 1st relapse (IRR = 1.51; p = 0.0111) were found during NAb? periods. The PS matching analysis, in a selected cohort of patients, demonstrated a negative trend of NAbs on the time to reach the milestone EDSS 4 (IRR = 2.94; p = 0.0879). This longterm post-marketing observational study further confirms that the occurrence of NAbs significantly affects the risk of disease worsening in IFNb- treated RRM

    The role of exercise parameters on small extracellular vesicles and microRNAs cargo in preventing neurodegenerative diseases

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    Physical activity (PA), which includes exercise, can reduce the risk of developing various non-communicable diseases, including neurodegenerative diseases (NDs), and mitigate their adverse effects. However, the mechanisms underlying this ability are not yet fully understood. Among several possible mechanisms proposed, such as the stimulation of brain-derived neurotrophic factor (BDNF), endothelial nitric oxide synthase (eNOS), insulin-like growth factor-1 (IGF-1), vascular endothelial growth factor (VEGF), and nerve growth factor (NGF), the possible involvement of particular vesicular structures enclosed in lipid membranes known as extracellular vesicles (EVs) has recently been investigated. These EVs would appear to exert a paracrine and systemic action through their ability to carry various molecules, particularly so-called microRNAs (miRNAs), performing a function as mediators of intercellular communication. Interestingly, EVs and miRNAs are differentially expressed following PA, but evidence on how different exercise parameters may differentially affect EVs and the miRNAs they carry is still scarce. In this review we summarized the current human findings on the effects of PA and different exercise parameters exerted on EVs and their cargo, focusing on miRNAs molecules, and discussing how this may represent one of the biological mechanisms through which exercise contributes to preventing and slowing NDs
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