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Erythrocytes in multiple sclerosis - forgotten contributors to the pathophysiology?

ABSTRACT: Multiple sclerosis (MS) is an autoimmune disease characterised by lymphocytic infiltration of the central nervous system and subsequent destruction of myelin and axons. On the background of a genetic predisposition to autoimmunity, environmental triggers are assumed to initiate the disease. The majority of MS research has focused on the pathological involvement of lymphocytes and other immune cells, yet a paucity of attention has been given to erythrocytes, which may play an important role in MS pathology. The following review briefly summarises how erythrocytes may contribute to MS pathology through impaired antioxidant capacity and altered haemorheological features. The effect of disease-modifying therapies on erythrocytes is also reviewed. It may be important to further investigate erythrocytes in MS, as this could broaden the understanding of the pathological mechanisms of the disease, as well as potentially lead to the discovery of novel and innovative targets for future therapies.

SUBMITTER: Groen K

PROVIDER: S-EPMC5433403 | biostudies-other | 2016 Jan-Dec

REPOSITORIES: biostudies-other

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Erythrocytes in multiple sclerosis - forgotten contributors to the pathophysiology?

Groen Kira K Maltby Vicki E VE Sanders Katherine A KA Scott Rodney J RJ Tajouri Lotti L Lechner-Scott Jeannette J

Multiple sclerosis journal - experimental, translational and clinical 20160101

Multiple sclerosis (MS) is an autoimmune disease characterised by lymphocytic infiltration of the central nervous system and subsequent destruction of myelin and axons. On the background of a genetic predisposition to autoimmunity, environmental triggers are assumed to initiate the disease. The majority of MS research has focused on the pathological involvement of lymphocytes and other immune cells, yet a paucity of attention has been given to erythrocytes, which may play an important role in MS ...[more]

PMID: 28607726

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Project description:To determine whether basing the decision to initiate immediate vs delayed disease-modifying therapy (DMT) on extent of recovery after initial relapse affects long-term disability accumulation in a multiple sclerosis (MS) evidence-based setting. We analyzed the double-blind, placebo-controlled interferon beta-1a 30 mc once a week in clinically isolated syndrome and 10-year-follow-up extension trial. Good recovery after presenting relapse was defined as (1) full early recovery within 28 days of symptom onset (Expanded Disability Status Scale [EDSS] score of 0 at enrollment maintained ≥6 months) and (2) delayed good recovery (EDSS score > 0 at enrollment and improvement from peak deficit to 6th-month or 1-year visit ≥ median). Time from recovery assignment to future disability (EDSS score ≥ 2.5 or ≥4.0) was studied on a relapse-recovery-stratified age axis and immediate vs 3-year delayed treatment initiation with Kaplan-Meier statistics and hazard ratios (HRs). One hundred seventy-five/328 patients had good recovery (94 immediate and 81 delayed treatment); 153 did not have good recovery (77 immediate and 76 delayed treatment). HRs for EDSS score ≥2.5 outcome were: delayed treatment without good recovery as reference (HR = 1.0), delayed treatment with good recovery (HR6th-month: 0.67, p = 0.207; HR1st-year: 0.40, p = 0.027), immediate treatment without good recovery (HR6th-month: 0.56, p = 0.061; HR1st-year: 0.40, p = 0.011), and immediate treatment with good recovery (HR6th-month: 0.43, p = 0.014; HR1st-year: 0.48, p = 0.034). Placebo patients were switched to long-term treatment after 3 years, and insufficient EDSS score ≥4.0 outcome events were available to study. In patients with MS presenting without good recovery after the initial relapse, immediate DMT initiation favorably influences the likelihood of more ambulatory-benign disease akin to patients with good recovery after the initial relapse. This study provides Class III evidence that for patients with MS without good recovery after the initial relapse, immediate DMT initiation increases the likelihood of a benign disease course.

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Erythrocytes in multiple sclerosis - forgotten contributors to the pathophysiology?

Publications

Erythrocytes in multiple sclerosis - forgotten contributors to the pathophysiology?

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