1
|
Foesleitner O, Knop KC, Lindenau M, Preisner F, Bäumer P, Heiland S, Bendszus M, Kronlage M. Quantitative MR Neurography in Multifocal Motor Neuropathy and Amyotrophic Lateral Sclerosis. Diagnostics (Basel) 2023; 13:diagnostics13071237. [PMID: 37046455 PMCID: PMC10093201 DOI: 10.3390/diagnostics13071237] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 03/19/2023] [Indexed: 03/29/2023] Open
Abstract
Background: The aim of this study was to assess the phenotype of multifocal motor neuropathy (MMN) and amyotrophic lateral sclerosis (ALS) in quantitative MR neurography. Methods: In this prospective study, 22 patients with ALS, 8 patients with MMN, and 10 healthy volunteers were examined with 3T MR neurography, using a high-resolution fat-saturated T2-weighted sequence, diffusion-tensor imaging (DTI), and a multi-echo T2-relaxometry sequence. The quantitative biomarkers fractional anisotropy (FA), radial and axial diffusivity (RD, AD), mean diffusivity (MD), cross-sectional area (CSA), T2-relaxation time, and proton spin density (PSD) were measured in the tibial nerve at the thigh and calf, and in the median, radial, and ulnar nerves at the mid-upper arm. Results: MMN showed a characteristic imaging pattern of decreased FA (p = 0.018), increased RD (p = 0.014), increased CSA (p < 0.001), increased T2-relaxation time (p < 0.001), and increased PSD (p = 0.025) in the upper arm nerves compared to ALS and controls. ALS patients did not differ from controls in any imaging marker, nor were there any group differences in the tibial nerve (p > 0.05). Conclusions: MMN shows a characteristic pattern of quantitative DTI and T2-relaxometry parameters in the upper-arm nerves, primarily indicating demyelination. Peripheral nerve changes in ALS seem to be below the detection level of current state-of-the-art quantitative MR neurography.
Collapse
|
2
|
Chaganti S, Hannaford A, Vucic S. Rituximab in chronic immune mediated neuropathies: a systematic review. Neuromuscul Disord 2022; 32:621-627. [DOI: 10.1016/j.nmd.2022.05.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 05/21/2022] [Accepted: 05/23/2022] [Indexed: 10/18/2022]
|
3
|
Keddie S, Eftimov F, van den Berg LH, Brassington R, de Haan RJ, van Schaik IN. Immunoglobulin for multifocal motor neuropathy. Cochrane Database Syst Rev 2022; 1:CD004429. [PMID: 35015296 PMCID: PMC8751207 DOI: 10.1002/14651858.cd004429.pub3] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
BACKGROUND Multifocal motor neuropathy (MMN) is a rare, probably immune-mediated disorder characterised by slowly progressive, asymmetric, distal weakness of one or more limbs with no objective loss of sensation. It may cause prolonged periods of disability. Treatment options for MMN are few. People with MMN do not usually respond to steroids or plasma exchange. Uncontrolled studies have suggested a beneficial effect of intravenous immunoglobulin (IVIg). This is an update of a Cochrane Review first published in 2005, with an amendment in 2007. We updated the review to incorporate new evidence. OBJECTIVES To assess the efficacy and safety of intravenous and subcutaneous immunoglobulin in people with MMN. SEARCH METHODS We searched the following databases on 20 April 2021: the Cochrane Neuromuscular Specialised Register, CENTRAL, MEDLINE, Embase, ClinicalTrials.gov, and WHO ICTRP for randomised controlled trials (RCTs) and quasi-RCTs, and checked the reference lists of included studies. SELECTION CRITERIA We considered RCTs and quasi-RCTs examining the effects of any dose of IVIg and subcutaneous immunoglobulin (SCIg) in people with definite or probable MMN for inclusion in the review. Eligible studies had to have measured at least one of the following outcomes: disability, muscle strength, or electrophysiological conduction block. We used studies that reported the frequency of adverse effects to assess safety. DATA COLLECTION AND ANALYSIS Two review authors independently reviewed the literature searches to identify potentially relevant trials, assessed risk of bias of included studies, and extracted data. We followed standard Cochrane methodology. MAIN RESULTS Six cross-over RCTs including a total of 90 participants were suitable for inclusion in the review. Five RCTs compared IVIg to placebo, and one compared IVIg to SCIg. Four of the trials comparing IVIg versus placebo involved IVIg-naive participants (induction treatment). In the other two trials, participants were known IVIg responders receiving maintencance IVIg at baseline and were then randomised to maintenance treatment with IVIg or placebo in one trial, and IVIg or SCIg in the other. Risk of bias was variable in the included studies, with three studies at high risk of bias in at least one risk of bias domain. IVIg versus placebo (induction treatment): three RCTs including IVIg-naive participants reported a disability measure. Disability improved in seven out of 18 (39%) participants after IVIg treatment and in two out of 18 (11%) participants after placebo (risk ratio (RR) 3.00, 95% confidence interval (CI) 0.89 to 10.12; 3 RCTs, 18 participants; low-certainty evidence). The proportion of participants with an improvement in disability at 12 months was not reported. Strength improved in 21 out of 27 (78%) IVIg-naive participants treated with IVIg and one out of 27 (4%) participants who received placebo (RR 11.00, 95% CI 2.86 to 42.25; 3 RCTs, 27 participants; low-certainty evidence). IVIg treatment may increase the proportion of people with resolution of at least one conduction block; however, the results were also consistent with no effect (RR 7.00, 95% CI 0.95 to 51.70; 4 RCTs, 28 participants; low-certainty evidence). IVIg versus placebo (maintenance treatment): a trial that included participants on maintenance IVIg treatment reported an increase in disability in 17 out of 42 (40%) people switching to placebo and seven out of 42 (17%) remaining on IVIg (RR 2.43, 95% CI 1.13 to 5.24; 1 RCT, 42 participants; moderate-certainty evidence) and a decrease in grip strength in 20 out of 42 (48%) participants after a switch to placebo treatment compared to four out of 42 (10%) remaining on IVIg (RR 0.20, 95% CI 0.07 to 0.54; 1 RCT, 42 participants; moderate-certainty evidence). Adverse events, IVIg versus placebo (induction or maintenance): four trials comparing IVIg and placebo reported adverse events, of which data from two studies could be meta-analysed. Transient side effects were reported in 71% of IVIg-treated participants versus 4.8% of placebo-treated participants in these studies. The pooled RR for the development of side effects was 10.33 (95% CI 2.15 to 49.77; 2 RCTs, 21 participants; very low-certainty evidence). There was only one serious side effect (pulmonary embolism) during IVIg treatment. IVIg versus SCIg (maintenance treatment): the trial that compared continuation of IVIg maintenance versus SCIg maintenance did not measure disability. The evidence was very uncertain for muscle strength (standardised mean difference 0.08, 95% CI -0.84 to 1.00; 1 RCT, 9 participants; very low-certainty evidence). The evidence was very uncertain for the number of people with side effects attributable to treatment (RR 0.50, 95% CI 0.18 to 1.40; 1 RCT, 9 participants; very low-certainty evidence). AUTHORS' CONCLUSIONS Low-certainty evidence from three small RCTs shows that IVIg may improve muscle strength in people with MMN, and low-certainty evidence indicates that it may improve disability; the estimate of the magnitude of improvement of disability has wide CIs and needs further studies to secure its significance. Based on moderate-certainty evidence, it is probable that most IVIg responders deteriorate in disability and muscle strength after IVIg withdrawal. SCIg might be an alternative treatment to IVIg, but the evidence is very uncertain. More research is needed to identify people in whom IVIg withdrawal is possible and to confirm efficacy of SCIg as an alternative maintenance treatment.
Collapse
Affiliation(s)
- Stephen Keddie
- Faculty of Brain Sciences, Institute of Neurology, London, UK
| | - Filip Eftimov
- Department of Neurology, Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Leonard H van den Berg
- Department of Neurology, University Medical Center Utrecht, Brain Center Rudolf Magnus, Utrecht, Netherlands
| | - Ruth Brassington
- Queen Square Centre for Neuromuscular Diseases, National Hospital for Neurology and Neurosurgery, London, UK
| | - Rob J de Haan
- Clinical Research Unit, Academic Medical Centre, University of Amsterdam, Amsterdam, Netherlands
| | - Ivo N van Schaik
- Department of Neurology, Amsterdam Neuroscience, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| |
Collapse
|
4
|
Beecher G, Shelly S, Dyck PJB, Mauermann ML, Martinez-Thompson JM, Berini SE, Naddaf E, Shouman K, Taylor BV, Dyck PJ, Engelstad J, Howe BM, Mills JR, Dubey D, Spinner RJ, Klein CJ. Pure Motor Onset and IgM-Gammopathy Occurrence in Multifocal Acquired Demyelinating Sensory and Motor Neuropathy. Neurology 2021; 97:e1392-e1403. [PMID: 34376509 DOI: 10.1212/wnl.0000000000012618] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 07/16/2021] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND AND OBJECTIVES To longitudinally investigate patients with multifocal acquired demyelinating sensory and motor neuropathy (MADSAM), quantifying timing and location of sensory involvements in motor onset patients, along with clinicohistopathologic and electrophysiologic findings to ascertain differences in patients with and without monoclonal gammopathy of uncertain significance (MGUS). METHODS Patients with MADSAM seen at Mayo Clinic and tested for monoclonal gammopathy and ganglioside antibodies were retrospectively reviewed (January 1, 2007-December 31, 2018). RESULTS Of 76 patients with MADSAM, 53% had pure motor, 16% pure sensory, 30% sensorimotor, and 1% cranial nerve onsets. Motor-onset patients were initially diagnosed with multifocal motor neuropathy (MMN). MGUS occurred in 25% (89% immunoglobulin M [IgM] subtype), associating with ganglioside autoantibodies (p < 0.001) and higher IgM titers (p < 0.04). Median time to sensory involvements (confirmed by electrophysiology) in motor onset patients was 18 months (range 6-180). Compared to initial motor nerve involvements, subsequent sensory findings were within the same territory in 35% (14/40), outside in 20% (8/40), or both in 45% (18/40). Brachial and lumbosacral plexus MRI was abnormal in 87% (34/39) and 84% (21/25), respectively, identifying hypertrophy and increased T2 signal predominantly in brachial plexus trunks (64%), divisions (69%), and cords (69%), and intrapelvic sciatic (64%) and femoral (44%) nerves. Proximal fascicular nerve biopsies (n = 9) more frequently demonstrated onion-bulb pathology (p = 0.001) and endoneurial inflammation (p = 0.01) than distal biopsies (n = 17). MRI and biopsy findings were similar among patient subgroups. Initial Inflammatory Neuropathy Cause and Treatment (INCAT) disability scores were higher in patients with MGUS relative to without (p = 0.02). Long-term treatment responsiveness by INCAT score reduction ≥1 or motor Neuropathy Impairment Score (mNIS) >8-point reduction occurred in 75% (49/65) irrespective of MGUS or motor onsets. Most required ongoing immunotherapy (86%). Patients with MGUS more commonly required dual-agent immunotherapy for stability (p = 0.02). DISCUSSION Pure motor onsets are the most common MADSAM presentation. Long-term follow-up, repeat electrophysiology, and nerve pathology help distinguish motor onset MADSAM from MMN. Better long-term immunotherapy responsiveness occurs in motor onset MADSAM compared to MMN reports. Patients with MGUS commonly require dual immunotherapy. CLASSIFICATION OF EVIDENCE This study provides Class II evidence that most clinical, electrophysiologic, and histopathologic findings were similar between patients with MADSAM with and without MGUS.
Collapse
Affiliation(s)
- Grayson Beecher
- From the Departments of Neurology (G.B., S.S., P. James B. Dyck, M.L.M., J.M.M.-T., S.E.B., E.N., K.S., Peter James B. Dyck, D.D., C.J.K.), Radiology (B.M.H.), Laboratory Medicine and Pathology (P. James B. Dyck, Peter James B. Dyck, J.E., J.R.M., D.D., C.J.K.), and Neurosurgery (R.J.S.), Mayo Clinic, Rochester, MN; and Menzies Institute for Medical Research (B.V.T.), University of Tasmania, Australia
| | - Shahar Shelly
- From the Departments of Neurology (G.B., S.S., P. James B. Dyck, M.L.M., J.M.M.-T., S.E.B., E.N., K.S., Peter James B. Dyck, D.D., C.J.K.), Radiology (B.M.H.), Laboratory Medicine and Pathology (P. James B. Dyck, Peter James B. Dyck, J.E., J.R.M., D.D., C.J.K.), and Neurosurgery (R.J.S.), Mayo Clinic, Rochester, MN; and Menzies Institute for Medical Research (B.V.T.), University of Tasmania, Australia
| | - P James B Dyck
- From the Departments of Neurology (G.B., S.S., P. James B. Dyck, M.L.M., J.M.M.-T., S.E.B., E.N., K.S., Peter James B. Dyck, D.D., C.J.K.), Radiology (B.M.H.), Laboratory Medicine and Pathology (P. James B. Dyck, Peter James B. Dyck, J.E., J.R.M., D.D., C.J.K.), and Neurosurgery (R.J.S.), Mayo Clinic, Rochester, MN; and Menzies Institute for Medical Research (B.V.T.), University of Tasmania, Australia
| | - Michelle L Mauermann
- From the Departments of Neurology (G.B., S.S., P. James B. Dyck, M.L.M., J.M.M.-T., S.E.B., E.N., K.S., Peter James B. Dyck, D.D., C.J.K.), Radiology (B.M.H.), Laboratory Medicine and Pathology (P. James B. Dyck, Peter James B. Dyck, J.E., J.R.M., D.D., C.J.K.), and Neurosurgery (R.J.S.), Mayo Clinic, Rochester, MN; and Menzies Institute for Medical Research (B.V.T.), University of Tasmania, Australia
| | - Jennifer M Martinez-Thompson
- From the Departments of Neurology (G.B., S.S., P. James B. Dyck, M.L.M., J.M.M.-T., S.E.B., E.N., K.S., Peter James B. Dyck, D.D., C.J.K.), Radiology (B.M.H.), Laboratory Medicine and Pathology (P. James B. Dyck, Peter James B. Dyck, J.E., J.R.M., D.D., C.J.K.), and Neurosurgery (R.J.S.), Mayo Clinic, Rochester, MN; and Menzies Institute for Medical Research (B.V.T.), University of Tasmania, Australia
| | - Sarah E Berini
- From the Departments of Neurology (G.B., S.S., P. James B. Dyck, M.L.M., J.M.M.-T., S.E.B., E.N., K.S., Peter James B. Dyck, D.D., C.J.K.), Radiology (B.M.H.), Laboratory Medicine and Pathology (P. James B. Dyck, Peter James B. Dyck, J.E., J.R.M., D.D., C.J.K.), and Neurosurgery (R.J.S.), Mayo Clinic, Rochester, MN; and Menzies Institute for Medical Research (B.V.T.), University of Tasmania, Australia
| | - Elie Naddaf
- From the Departments of Neurology (G.B., S.S., P. James B. Dyck, M.L.M., J.M.M.-T., S.E.B., E.N., K.S., Peter James B. Dyck, D.D., C.J.K.), Radiology (B.M.H.), Laboratory Medicine and Pathology (P. James B. Dyck, Peter James B. Dyck, J.E., J.R.M., D.D., C.J.K.), and Neurosurgery (R.J.S.), Mayo Clinic, Rochester, MN; and Menzies Institute for Medical Research (B.V.T.), University of Tasmania, Australia
| | - Kamal Shouman
- From the Departments of Neurology (G.B., S.S., P. James B. Dyck, M.L.M., J.M.M.-T., S.E.B., E.N., K.S., Peter James B. Dyck, D.D., C.J.K.), Radiology (B.M.H.), Laboratory Medicine and Pathology (P. James B. Dyck, Peter James B. Dyck, J.E., J.R.M., D.D., C.J.K.), and Neurosurgery (R.J.S.), Mayo Clinic, Rochester, MN; and Menzies Institute for Medical Research (B.V.T.), University of Tasmania, Australia
| | - Bruce V Taylor
- From the Departments of Neurology (G.B., S.S., P. James B. Dyck, M.L.M., J.M.M.-T., S.E.B., E.N., K.S., Peter James B. Dyck, D.D., C.J.K.), Radiology (B.M.H.), Laboratory Medicine and Pathology (P. James B. Dyck, Peter James B. Dyck, J.E., J.R.M., D.D., C.J.K.), and Neurosurgery (R.J.S.), Mayo Clinic, Rochester, MN; and Menzies Institute for Medical Research (B.V.T.), University of Tasmania, Australia
| | - Peter James Dyck
- From the Departments of Neurology (G.B., S.S., P. James B. Dyck, M.L.M., J.M.M.-T., S.E.B., E.N., K.S., Peter James B. Dyck, D.D., C.J.K.), Radiology (B.M.H.), Laboratory Medicine and Pathology (P. James B. Dyck, Peter James B. Dyck, J.E., J.R.M., D.D., C.J.K.), and Neurosurgery (R.J.S.), Mayo Clinic, Rochester, MN; and Menzies Institute for Medical Research (B.V.T.), University of Tasmania, Australia
| | - JaNean Engelstad
- From the Departments of Neurology (G.B., S.S., P. James B. Dyck, M.L.M., J.M.M.-T., S.E.B., E.N., K.S., Peter James B. Dyck, D.D., C.J.K.), Radiology (B.M.H.), Laboratory Medicine and Pathology (P. James B. Dyck, Peter James B. Dyck, J.E., J.R.M., D.D., C.J.K.), and Neurosurgery (R.J.S.), Mayo Clinic, Rochester, MN; and Menzies Institute for Medical Research (B.V.T.), University of Tasmania, Australia
| | - Benjamin M Howe
- From the Departments of Neurology (G.B., S.S., P. James B. Dyck, M.L.M., J.M.M.-T., S.E.B., E.N., K.S., Peter James B. Dyck, D.D., C.J.K.), Radiology (B.M.H.), Laboratory Medicine and Pathology (P. James B. Dyck, Peter James B. Dyck, J.E., J.R.M., D.D., C.J.K.), and Neurosurgery (R.J.S.), Mayo Clinic, Rochester, MN; and Menzies Institute for Medical Research (B.V.T.), University of Tasmania, Australia
| | - John R Mills
- From the Departments of Neurology (G.B., S.S., P. James B. Dyck, M.L.M., J.M.M.-T., S.E.B., E.N., K.S., Peter James B. Dyck, D.D., C.J.K.), Radiology (B.M.H.), Laboratory Medicine and Pathology (P. James B. Dyck, Peter James B. Dyck, J.E., J.R.M., D.D., C.J.K.), and Neurosurgery (R.J.S.), Mayo Clinic, Rochester, MN; and Menzies Institute for Medical Research (B.V.T.), University of Tasmania, Australia
| | - Divyanshu Dubey
- From the Departments of Neurology (G.B., S.S., P. James B. Dyck, M.L.M., J.M.M.-T., S.E.B., E.N., K.S., Peter James B. Dyck, D.D., C.J.K.), Radiology (B.M.H.), Laboratory Medicine and Pathology (P. James B. Dyck, Peter James B. Dyck, J.E., J.R.M., D.D., C.J.K.), and Neurosurgery (R.J.S.), Mayo Clinic, Rochester, MN; and Menzies Institute for Medical Research (B.V.T.), University of Tasmania, Australia
| | - Robert J Spinner
- From the Departments of Neurology (G.B., S.S., P. James B. Dyck, M.L.M., J.M.M.-T., S.E.B., E.N., K.S., Peter James B. Dyck, D.D., C.J.K.), Radiology (B.M.H.), Laboratory Medicine and Pathology (P. James B. Dyck, Peter James B. Dyck, J.E., J.R.M., D.D., C.J.K.), and Neurosurgery (R.J.S.), Mayo Clinic, Rochester, MN; and Menzies Institute for Medical Research (B.V.T.), University of Tasmania, Australia
| | - Christopher J Klein
- From the Departments of Neurology (G.B., S.S., P. James B. Dyck, M.L.M., J.M.M.-T., S.E.B., E.N., K.S., Peter James B. Dyck, D.D., C.J.K.), Radiology (B.M.H.), Laboratory Medicine and Pathology (P. James B. Dyck, Peter James B. Dyck, J.E., J.R.M., D.D., C.J.K.), and Neurosurgery (R.J.S.), Mayo Clinic, Rochester, MN; and Menzies Institute for Medical Research (B.V.T.), University of Tasmania, Australia.
| |
Collapse
|
5
|
Pro S, Ursitti F, Pruneddu GL, Di Capua M, Valeriani M. Childhood-Onset Multifocal Motor Neuropathy with IgM Antibodies to Gangliosides GM1: A Case Report with Poor Outcome. Neuropediatrics 2021; 52:406-409. [PMID: 33511596 DOI: 10.1055/s-0040-1722677] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND Multifocal motor neuropathy (MMN) is a slowly progressive motor neuropathy characterized by asymmetric muscle weakness without sensory involvement. Typically, MMN respond completely to treatment with intravenous immunoglobulin (IVIg). MMN is even rarer in the pediatric population, where only five patients have been reported up to now. CASE REPORT We discuss the 3-year follow-up of a 13-year-old girl with MMN who was positive for IgM antibodies to gangliosides GM1. She was diagnosed with MMN in accordance with the European Federation of Neurological Societies/Peripheral Nerve Society (EFNS/PNS) criteria. Serological studies revealed that she tested positive for IgM antibodies to GM1. She underwent intravenous methylprednisolone followed by an oral prednisone taper, intravenous immunoglobulin (IVIg), plasma exchange followed by IVIG and prednisone and Rituximab. No improvement was referred. At the present, she shows flaccid tetraplegia, facial diplegia, and bulbar cranial nerve palsy. CONCLUSION Although childhood onset MMN is rare, most patients reported in literature respond to IVIg treatment. In a few cases, however, IVIg can be ineffective. In our patient, IVIg as well as treatment with prednisolone, plasma exchange and rituximab have failed.
Collapse
Affiliation(s)
- Stefano Pro
- Neurophysiology Unit, Department of Neuroscience and Neurorehabilitation, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Fabiana Ursitti
- Child Neurology Unit, Department of Neuroscience and Neurorehabilitation, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Gian Luca Pruneddu
- Paediatric Neurorehabilitation Units Neuroscience and Neurorehabilitation, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Matteo Di Capua
- Neurophysiology Unit, Department of Neuroscience and Neurorehabilitation, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Massimiliano Valeriani
- Child Neurology Unit, Department of Neuroscience and Neurorehabilitation, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| |
Collapse
|
6
|
Dalakas MC. Update on Intravenous Immunoglobulin in Neurology: Modulating Neuro-autoimmunity, Evolving Factors on Efficacy and Dosing and Challenges on Stopping Chronic IVIg Therapy. Neurotherapeutics 2021; 18:2397-2418. [PMID: 34766257 PMCID: PMC8585501 DOI: 10.1007/s13311-021-01108-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/11/2021] [Indexed: 02/07/2023] Open
Abstract
In the last 25 years, intravenous immunoglobulin (IVIg) has had a major impact in the successful treatment of previously untreatable or poorly controlled autoimmune neurological disorders. Derived from thousands of healthy donors, IVIg contains IgG1 isotypes of idiotypic antibodies that have the potential to bind pathogenic autoantibodies or cross-react with various antigenic peptides, including proteins conserved among the "common cold"-pre-pandemic coronaviruses; as a result, after IVIg infusions, some of the patients' sera may transiently become positive for various neuronal antibodies, even for anti-SARS-CoV-2, necessitating caution in separating antibodies derived from the infused IVIg or acquired humoral immunity. IVIg exerts multiple effects on the immunoregulatory network by variably affecting autoantibodies, complement activation, FcRn saturation, FcγRIIb receptors, cytokines, and inflammatory mediators. Based on randomized controlled trials, IVIg is approved for the treatment of GBS, CIDP, MMN and dermatomyositis; has been effective in, myasthenia gravis exacerbations, and stiff-person syndrome; and exhibits convincing efficacy in autoimmune epilepsy, neuromyelitis, and autoimmune encephalitis. Recent evidence suggests that polymorphisms in the genes encoding FcRn and FcγRIIB may influence the catabolism of infused IgG or its anti-inflammatory effects, impacting on individualized dosing or efficacy. For chronic maintenance therapy, IVIg and subcutaneous IgG are effective in controlled studies only in CIDP and MMN preventing relapses and axonal loss up to 48 weeks; in practice, however, IVIg is continuously used for years in all the aforementioned neurological conditions, like is a "forever necessary therapy" for maintaining stability, generating challenges on when and how to stop it. Because about 35-40% of patients on chronic therapy do not exhibit objective neurological signs of worsening after stopping IVIg but express subjective symptoms of fatigue, pains, spasms, or a feeling of generalized weakness, a conditioning effect combined with fear that discontinuing chronic therapy may destabilize a multi-year stability status is likely. The dilemmas of continuing chronic therapy, the importance of adjusting dosing and scheduling or periodically stopping IVIg to objectively assess necessity, and concerns in accurately interpreting IVIg-dependency are discussed. Finally, the merit of subcutaneous IgG, the ineffectiveness of IVIg in IgG4-neurological autoimmunities, and genetic factors affecting IVIg dosing and efficacy are addressed.
Collapse
Affiliation(s)
- Marinos C Dalakas
- Department of Neurology, Thomas Jefferson University, Philadelphia, PA, USA.
- Neuroimmunology Unit, Dept. of Pathophysiology, National and Kapodistrian University of Athens Medical School, Athens, Greece.
| |
Collapse
|
7
|
Terhoeven P, Seybold J, Utz KS, Nickel FT, Lee DH, Linker RA. Longer-term effects of intravenous immunoglobulin treatment in chronic inflammatory demyelinating polyneuropathy: Who benefits? J Neurol Sci 2020; 419:117169. [PMID: 33035867 DOI: 10.1016/j.jns.2020.117169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 09/04/2020] [Accepted: 09/30/2020] [Indexed: 12/25/2022]
Abstract
Intravenous immunoglobulins (IVIg) represent an established cornerstone for the immunotherapy of chronic inflammatory demyelinating polyneuropathy (CIDP). Efficacy of IVIg for CIDP was proven in a large phase III trial. Yet, data on longer-term efficacy and effects in distinct subgroups are scarce. Our trial investigates the long-term efficacy of IVIg treatment in CIDP patients. In this observational real-world study, we retrospectively analyzed 49 CIDP patients receiving continuous IVIg treatment with a mean initial dosage of 87 g (1 g/kg body weight) every 4 weeks over a mean time of 45 months between 2010 and 2018. INCAT-Scores before the start of treatment and at the end of the observation period were compared. Over the observation period, IVIg treatment led to a median improvement of one INCAT score point. Subgroup analyses revealed a more pronounced improvement of INCAT scores in female CIDP patients, individuals with relapsing disease courses, patients with more pronounced motor impairment (higher initial INCAT scores) and in the cohort without need for concomitant other immunotherapies. These data argue for sustained beneficial effects of longer-term immunotherapy with IVIg in CIDP, particularly in females and relapsing disease forms with higher disease activity.
Collapse
Affiliation(s)
- Pauline Terhoeven
- Department of Neurology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Schwabachanlage 6, 91054 Erlangen, Germany
| | - Julia Seybold
- Department of Neurology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Schwabachanlage 6, 91054 Erlangen, Germany; Department of Neurology, University Regensburg, Universitätsstr. 84, 93053 Regensburg, Germany
| | - Kathrin S Utz
- Department of Neurology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Schwabachanlage 6, 91054 Erlangen, Germany
| | - Florian T Nickel
- Department of Neurology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Schwabachanlage 6, 91054 Erlangen, Germany
| | - De-Hyung Lee
- Department of Neurology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Schwabachanlage 6, 91054 Erlangen, Germany; Department of Neurology, University Regensburg, Universitätsstr. 84, 93053 Regensburg, Germany
| | - Ralf A Linker
- Department of Neurology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Schwabachanlage 6, 91054 Erlangen, Germany; Department of Neurology, University Regensburg, Universitätsstr. 84, 93053 Regensburg, Germany.
| |
Collapse
|
8
|
Rajabally YA, Goedee HS, Attarian S, Hartung HP. Management challenges for chronic dysimmune neuropathies during the COVID-19 pandemic. Muscle Nerve 2020; 62:34-40. [PMID: 32311114 PMCID: PMC7264511 DOI: 10.1002/mus.26896] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 04/13/2020] [Accepted: 04/14/2020] [Indexed: 12/29/2022]
Abstract
Since March 2020, the COVID-19 pandemic has led to the need to re-think the delivery of services to patients with chronic dysimmune neuropathies. Telephone/video consultations have become widespread but have compounded concerns about objective evaluation. Therapeutic decisions need, more than ever before, to be considered in the best interests of both patients, and society, while not denying function-preserving/restoring treatment. Immunoglobulin therapy and plasma exchange, for those treated outside of the home, expose patients to the hazards of hospital or outpatient infusion centers. Steroid therapy initiation and continuation pose increased infectious risk. Immunosuppressant therapy similarly becomes highly problematic, with the risks of treatment continuation enhanced by uncertainties regarding duration of the pandemic. The required processes necessitate considerable time and effort especially as resources and staff are re-deployed to face the pandemic, but are essential for protecting this group of patients and as an integral part of wider public health actions.
Collapse
Affiliation(s)
- Yusuf A Rajabally
- Inflammatory Neuropathy Clinic, University Hospitals Birmingham, Birmingham, United Kingdom.,Aston Medical School, Aston University, Birmingham, United Kingdom
| | - H Stephan Goedee
- Brain Center Rudolf Magnus, Department of Neurology and Neurosurgery, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands
| | - Shahram Attarian
- Reference Centre for Neuromuscular Diseases and ALS, Centre Hospitalier Universitaire La Timone, 264 rue Saint-Pierre, 13385, Marseille, France.,Aix-Marseille University, Inserm, GMGF, Marseille, France
| | - Hans-Peter Hartung
- Department of Neurology, Medical Faculty and Center of Neurology and Neuropsychiatry, LVR Klinikum, Heinrich-Heine University, Düsseldorf, Germany
| |
Collapse
|
9
|
Yeh WZ, Dyck PJ, van den Berg LH, Kiernan MC, Taylor BV. Multifocal motor neuropathy: controversies and priorities. J Neurol Neurosurg Psychiatry 2020; 91:140-148. [PMID: 31511307 DOI: 10.1136/jnnp-2019-321532] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/14/2019] [Accepted: 08/31/2019] [Indexed: 12/11/2022]
Abstract
Despite 30 years of research there are still significant unknowns and controversies associated with multifocal motor neuropathy (MMN) including disease pathophysiology, diagnostic criteria and treatment. Foremost relates to the underlying pathophysiology, specifically whether MMN represents an axonal or demyelinating neuropathy and whether the underlying pathophysiology is focused at the node of Ranvier. In turn, this discussion promotes consideration of therapeutic approaches, an issue that becomes more directed in this evolving era of precision medicine. It is generally accepted that MMN represents a chronic progressive immune-mediated motor neuropathy clinically characterised by progressive asymmetric weakness and electrophysiologically by partial motor conduction block. Anti-GM1 IgM antibodies are identified in at least 40% of patients. There have been recent developments in the use of neuromuscular ultrasound and MRI to aid in diagnosing MMN and in further elucidation of its pathophysiological mechanisms. The present Review will critically analyse the knowledge accumulated about MMN over the past 30 years, culminating in a state-of-the-art approach to therapy.
Collapse
Affiliation(s)
- Wei Zhen Yeh
- Department of Neurology, Royal Hobart Hospital, Hobart, Tasmania, Australia.,Department of Neuroscience, Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | - P James Dyck
- Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA
| | - Leonard H van den Berg
- UMC Utrecht Brain Center, Department of Neurology, University Medical Center Utrecht, Utrecht, Netherlands
| | - Matthew C Kiernan
- Bushell Chair of Neurology, Brain and Mind Centre, University of Sydney, Sydney, New South Wales, Australia.,Department of Neurology, Royal Prince Alfred Hospital, Camperdown, New South Wales, Australia
| | - Bruce V Taylor
- Department of Neurology, Royal Hobart Hospital, Hobart, Tasmania, Australia .,Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia
| |
Collapse
|
10
|
Content Ed Net. Improving Intravenous Immunoglobulin Dosing in Autoimmune Neuropathies. EUROPEAN MEDICAL JOURNAL 2019. [DOI: 10.33590/emj/10314832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
This symposium took place on Monday 24th June 2019, as part of the 2019 Peripheral Nerve Society (PNS) Annual Meeting in Genoa, Italy. Immune-mediated neuropathies such as Guillain–Barré Syndrome (GBS), chronic inflammatory demyelinating polyneuropathy (CIDP), and multifocal motor neuropathy (MMN) are diverse inflammatory peripheral nerve disorders. International consensus guidelines recommend intravenous Ig (IVIG) as Level A for the treatment of GBS, CIDP, and MMN. Suggested induction doses of IVIG are 2 g/kg divided over 2–5 days, but maintenance doses are purposely less clearly defined and left up to the judgement of the clinician, depending upon the specific needs of the individual patient. Community-based neurologists treating patients with these rare inflammatory neuropathies may be unaware of optimal dosing regimens and patient response to treatment may therefore be inadequate. In this symposium, world-renowned experts in GBS, CIDP, and MMN shared their expertise and review of the literature to provide reasonable dosing regimens for neurologists who may rarely encounter these conditions.
Collapse
|
11
|
Chia PK, Hung SKY, Hiew FL. Clinical and functional change in multifocal motor neuropathy treated with IVIg. J Clin Neurosci 2019; 69:114-119. [DOI: 10.1016/j.jocn.2019.08.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 08/04/2019] [Indexed: 10/26/2022]
|
12
|
Chen Y, Wang C, Xu F, Ming F, Zhang H. Efficacy and Tolerability of Intravenous Immunoglobulin and Subcutaneous Immunoglobulin in Neurologic Diseases. Clin Ther 2019; 41:2112-2136. [PMID: 31445679 DOI: 10.1016/j.clinthera.2019.07.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 06/01/2019] [Accepted: 07/10/2019] [Indexed: 12/12/2022]
Abstract
PURPOSE IV immunoglobulin (Ig) therapy has been widely used for the treatment of neurologic disorders, autoimmune diseases, immunodeficiency-related diseases, blood system diseases, and cancers. In this review, we summarize the efficacy and tolerability of IVIg and SCIg therapy in neurologic diseases. METHODS We summarized and analyzed the efficacy and tolerability of IVIg and SCIg in neurologic diseases, by analyzing the literature pertaining to the use of IVIg and SCIg to treat nervous system diseases. FINDINGS In clinical neurology practice, IVIg has been shown to be useful for the treatment of new-onset or recurrent immune diseases and for long-term maintenance treatment of chronic diseases. Moreover, IVIg may have applications in the management of intractable autoimmune epilepsy, paraneoplastic syndrome, autoimmune encephalitis, and neuromyelitis optica. SCIg is emerging as an alternative to IVIg treatment. Although SCIg has a composition similar to that of IVIg, the applications of this therapy are different. Notably, the bioavailability of SCIg is lower than that of IVIg, but the homeostasis level is more stable. Current studies have shown that these 2 therapies have pharmacodynamic equivalence. IMPLICATIONS In this review, we explored the efficacy of IVIg in the treatment of various neurologic disorders. IVIg administration still faces many challenges. Thus, it will be necessary to standardize the use of IVIg in the clinical setting. SCIg administration is a novel and feasible treatment option for neurologic and immune-related diseases, such as chronic inflammatory demyelinating polyradiculoneuropathy and idiopathic inflammatory myopathies. As our understanding of the mechanisms of action of IVIg improve, potential next-generation biologics can being developed.
Collapse
Affiliation(s)
- Yun Chen
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Chunyu Wang
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Fanxi Xu
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Fengyu Ming
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Hainan Zhang
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, China.
| |
Collapse
|
13
|
Abstract
Intravenous immunoglobulin (IVIg) is used in the treatment of autoimmune diseases, including immune-mediated central and peripheral nervous system disorders. This article will review the indications, proposed mechanism of actions, and administration of immunoglobulin treatment in various neuropathies, neuromuscular junction disorders, and myopathies. IVIg may have more than one mechanism of action to alter the pathogenesis of underlying neuromuscular disease. IVIg treatment has been used as a first-line treatment in Guillain-Barre syndrome, chronic inflammatory demyelinating polyradiculoneuropathy, multifocal motor neuropathy, and second-line off-label treatment in medically refractory cases of polymyositis, dermatomyositis, and myasthenia gravis. IVIg is a well-tolerated and effective treatment for these neuromuscular diseases. With this review article, we hope to increase clinicians' awareness of the indications and efficiencies of IVIg in a broad spectrum of neuromuscular diseases.
Collapse
Affiliation(s)
- Ahmet Z Burakgazi
- Department of Internal Medicine, Neuroscience Section, Virginia Tech Carilion School of Medicine, Carilion Clinic Neurology, Roanoke, VA
| |
Collapse
|
14
|
Léger JM, Alfa Cissé O, Cocito D, Grouin JM, Katifi H, Nobile-Orazio E, Ouaja R, Pouget J, Rajabally YA, Sevilla T, Merkies ISJ. IqYmune® is an effective maintenance treatment for multifocal motor neuropathy: A randomised, double-blind, multi-center cross-over non-inferiority study vs Kiovig®-The LIME Study. J Peripher Nerv Syst 2018; 24:56-63. [PMID: 30456899 PMCID: PMC6590491 DOI: 10.1111/jns.12291] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 10/26/2018] [Accepted: 10/26/2018] [Indexed: 12/16/2022]
Abstract
Intravenous immunoglobulin (IVIg) is the gold‐standard for maintenance treatment of multifocal motor neuropathy (MMN). This phase III, randomised, double‐blind, multi‐centre, active‐control, crossover study, aimed to evaluate the non‐inferiority of IqYmune® relative to Kiovig®, primarily based on efficacy criteria. Twenty‐two adult MMN patients, treated with any brand of IVIg (except Kiovig® or IqYmune®) at a stable maintenance dose within the range of 1 to 2 g/kg every 4 to 8 weeks, were randomised to receive either Kiovig® followed by IqYmune®, or IqYmune® followed by Kiovig®. Each product was administered for 24 weeks. The primary endpoint was the difference between IqYmune® and Kiovig® in mean assessments of modified Medical Research Council (MMRC) 10 sum score (strength of 5 upper‐limb and 5 lower‐limb muscle groups, on both sides, giving a score from 0 to 100) during the evaluation period (non‐inferiority margin of Δ = 2). A linear mixed model analysis demonstrated the non‐inferiority of IqYmune® relative to Kiovig®, independently of the covariates (value at baseline, treatment period, and treatment sequence). The estimated “IqYmune® − Kiovig®” difference was −0.01, with a 95% confidence interval (CI) −0.51 to 0.48. The number of adverse reactions (ARs) and the percentage of patients affected were similar for the two products: 39 ARs in 10 patients with IqYmune® vs 32 ARs in 11 patients with Kiovig®. No thromboembolic events nor haemolysis nor renal impairment were observed. In this first clinical trial comparing two IVIg brands for maintenance treatment of MMN, efficacy and tolerability of both brands were similar.
Collapse
Affiliation(s)
- Jean-Marc Léger
- National Referral Center for Neuromuscular Diseases, University Hospital Pitié-Salpétrière, Paris, France
| | | | - Dario Cocito
- Department of Neurosciences, Molinette Hospital, Università degli Studi di Torino, Torino, Italy
| | | | - Haider Katifi
- Wessex Neurological Centre, Southampton General Hospital, Southampton, UK
| | - Eduardo Nobile-Orazio
- Neuromuscular and Neuroimmunology Service, Humanitas Clinical and Research Center, Milan University, Milan, Italy
| | - Rabye Ouaja
- Global Medical Affairs, LFB, Les Ulis, France
| | - Jean Pouget
- National Referral Center for Neuromuscular Diseases, University Hospital La Timone, Marseille, France
| | - Yusuf A Rajabally
- School of Life and Health Sciences, Aston Brain Centre, Aston University, Birmingham, UK
| | - Teresa Sevilla
- Neurology Department, La Fe University Hospital, Centro de investigación Biomédica en red de enfermedades raras (CIBERER), University of Valencia, Valencia, Spain
| | - Ingemar S J Merkies
- Maastricht University Medical Center, Maastricht, The Netherlands.,St. Elisabeth Hospital, Willemstad, Curacao
| |
Collapse
|
15
|
Löscher WN, Oberreiter EM, Erdler M, Quasthoff S, Culea V, Berek K, Embacher N, Grinzinger S, Hess I, Höger FS, Horlings CGC, Huemer M, Jecel J, Kleindienst W, Laich E, Müller P, Oel D, Örtl W, Lenzenweger E, Rath J, Stadler K, Stieglbauer K, Thaler-Wolf C, Wanschitz J, Zimprich F, Cetin H, Topakian R. Multifocal motor neuropathy in Austria: a nationwide survey of clinical features and response to treatment. J Neurol 2018; 265:2834-2840. [PMID: 30259176 PMCID: PMC6244652 DOI: 10.1007/s00415-018-9071-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 09/17/2018] [Accepted: 09/18/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND OBJECTIVES Multifocal motor neuropathy (MMN) is a rare neuropathy and detailed descriptions of larger patient cohorts are scarce. The objective of this study was to evaluate epidemiological, clinical, and laboratory features of MMN patients and their response to treatment in Austria and to compare these data with those from the literature. METHODS Anonymized demographic and clinical data about MMN patients until 31.12.2017 were collected from registered Austrian neurologists. Exploratory statistics on clinical and laboratory features as well as treatment regimens and responses were performed. RESULTS 57 Patients with MMN were identified, resulting in a prevalence of 0.65/100.000. Mean age of onset was 44.1 ± 13.1 years, the diagnostic delay 5.5 ± 8.4 years. In 77% of patients, symptom onset was in the upper limbs, and in 92%, it occurred in distal muscles. Proximal onset was never observed in the lower limbs. At the final follow-up, the majority of patients had atrophy (88%) in affected regions. Definite motor conduction blocks (CB) were found in 54 patients. Anti-GM1-IgM antibodies were present in 43%. Treatment with intravenous immunoglobulins improved muscle strength and INCAT score initially, but at last follow-up, both scores deteriorated to values before treatment. DISCUSSION The findings of the present study corroborate the previous findings in MMN. Onset typically occurs in the upper limbs and mostly distal, CBs are found in the majority of cases, while anti-GM1-IgM antibodies are detected in only approximately 40%. Our study underlines that the initial good response to treatment fades over time.
Collapse
Affiliation(s)
- Wolfgang N Löscher
- Department of Neurology, Medical University of Innsbruck, Anichstr. 35, 6020, Innsbruck, Austria.
| | - Eva-Maria Oberreiter
- Department of Neurology, Medical University of Innsbruck, Anichstr. 35, 6020, Innsbruck, Austria
| | | | - Stefan Quasthoff
- Department of Neurology, Medical University of Graz, Graz, Austria
| | - Valeriu Culea
- Department of Neurology, Medical University of Graz, Graz, Austria
| | - Klaus Berek
- Department of Neurology, BKH Kufstein, Kufstein, Austria
| | - Norbert Embacher
- Department of Neurology, St. Pölten University, Sankt Pölten, Austria
| | - Susanne Grinzinger
- Department of Neurology, Paracelsus University of Salzburg, Salzburg, Austria
| | | | | | - Corinne G C Horlings
- Department of Neurology, Medical University of Innsbruck, Anichstr. 35, 6020, Innsbruck, Austria
| | - Michael Huemer
- Department of Neurology, Kardinal Schwarzenberg Hospital, Schwarzach im Pongau, Austria
| | - Julia Jecel
- 2. Department of Neurology, KH Hietzing, Vienna, Austria
| | | | - Eva Laich
- Department of Neurology, LKH Steyr, Steyr, Austria
| | - Petra Müller
- Department of Neurology, KH Wels-Grieskirchen, Wels, Austria
| | - Dierk Oel
- Department of Neurology, KH Wels-Grieskirchen, Wels, Austria
| | - Wolfgang Örtl
- Department of Neurology, Johannes Kepler-University Linz, Linz, Austria
| | - Eva Lenzenweger
- Department of Neurology 2, Johannes Kepler-University Linz, Linz, Austria
| | - Jakob Rath
- Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Klaus Stadler
- Department of Neurology, KH Wels-Grieskirchen, Wels, Austria
| | | | | | - Julia Wanschitz
- Department of Neurology, Medical University of Innsbruck, Anichstr. 35, 6020, Innsbruck, Austria
| | - Fritz Zimprich
- Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Hakan Cetin
- Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Raffi Topakian
- Department of Neurology, KH Wels-Grieskirchen, Wels, Austria
| |
Collapse
|
16
|
Abstract
PURPOSE OF REVIEW This article reviews the chronic demyelinating neuropathies, with a focus on the diagnosis and treatment of immune-mediated neuropathies and the features that can help differentiate immune-mediated neuropathies from other chronic demyelinating peripheral nerve conditions. RECENT FINDINGS Advances in clinical phenotyping and outcomes assessment have enabled neurologists to improve disease recognition, treatment, and disease monitoring. Our understanding of the immunopathogenesis of demyelinating neuropathies is evolving. Identification of new antibodies and recognition that node of Ranvier dysfunction may be an early pathogenic feature may herald further diagnostic and treatment advancements. SUMMARY The chronic demyelinating polyneuropathies are heterogeneous. The clinical and diagnostic features are sometimes overlapping, and the specific disorders are variable in pathogenesis, treatment, and prognosis. This heterogeneity underscores the importance of achieving diagnostic accuracy and implementing disease-specific treatment approaches.
Collapse
|
17
|
Safety of Intravenous Immunoglobulin (Tegeline®), Administered at Home in Patients with Autoimmune Disease: Results of a French Study. BIOMED RESEARCH INTERNATIONAL 2018; 2018:8147251. [PMID: 29736397 PMCID: PMC5875056 DOI: 10.1155/2018/8147251] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 01/31/2018] [Indexed: 11/17/2022]
Abstract
The efficacy of intravenous immunoglobulins (IVIg) in patients with autoimmune diseases (AID) has been known for several decades. Majority of these patients received IVIg in hospital. A retrospective study was conducted in 22 centers in France to evaluate the feasibility of the administration of Tegeline, an IVIg from LFB Biomedicaments, and assess its safety at home, compared to in hospital, in patients with AID. The included patients were at least 18 years old, suffering from AID, and treated with at least 1 cycle of Tegeline at home after receiving 3 consecutive cycles of hospital-based treatment with Tegeline at a dose between 1 and 2 g/kg/cycle. Forty-six patients with AID, in most cases immune-mediated neuropathies, received a total of 138 cycles of Tegeline in hospital and then 323 at home. Forty-five drug-related adverse events occurred in 17 patients who received their cycles at home compared to 24 adverse events in hospital in 15 patients. Serious adverse events occurred in 3 patients during home treatment, but they were not life-threatening and did not lead to discontinuation of Tegeline. Forty-five patients continued their treatment with Tegeline at home or in hospital; 39 (84.8%) were still receiving home treatment at the end of the study. In conclusion, the study demonstrates the good safety profile of Tegeline administered at home at high doses in patients with AID who are eligible for home administration of Tegeline.
Collapse
|
18
|
Kuwabara S, Misawa S, Mori M, Iwai Y, Ochi K, Suzuki H, Nodera H, Tamaoka A, Iijima M, Toda T, Yoshikawa H, Kanda T, Sakamoto K, Kusunoki S, Sobue G, Kaji R. Intravenous immunoglobulin for maintenance treatment of multifocal motor neuropathy: A multi-center, open-label, 52-week phase 3 trial. J Peripher Nerv Syst 2018; 23:115-119. [PMID: 29635876 PMCID: PMC6033107 DOI: 10.1111/jns.12268] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 03/26/2018] [Accepted: 04/02/2018] [Indexed: 11/26/2022]
Abstract
Intravenous immunoglobulin (IVIg) therapy is currently the only established treatment in patients with multifocal motor neuropathy (MMN), and many patients have an IVIg-dependent fluctuation. We aimed to investigate the efficacy and safety of every 3 week IVIg (1.0 g/kg) for 52 weeks. This study was an open-label phase 3 clinical trial, enrolling 13 MMN patients. After an induction IVIg therapy (0.4 g/kg/d for 5 consecutive days), maintenance dose (1.0 g/kg) was given every 3 weeks for 52 weeks. The major outcome measures were the Medical Research Council (MRC) sum score and hand-grip strength at week 52. This trial is registered with ClinicalTrials.gov, number NCT01827072. At week 52, 11 of the 13 patients completed the study, and all 11 had a sustained improvement. The mean (SD) MRC sum score was 85.6 (8.7) at the baseline, and 90.6 (12.8) at week 52. The mean grip strength was 39.2 (30.0) kPa at the baseline and 45.2 (32.8) kPa at week 52. Two patients dropped out because of adverse event (dysphagia) and decision of an investigator, respectively. Three patients developed coronary spasm, dysphagia, or inguinal herniation, reported as the serious adverse events, but considered not related with the study drug. The other adverse effects were mild and resolved by the end of the study period. Our results show that maintenance treatment with 1.0 g/kg IVIg every 3 week is safe and efficacious for MMN patients up to 52 weeks. Further studies are required to investigate optimal dose and duration of maintenance IVIg for MMN.
Collapse
Affiliation(s)
- Satoshi Kuwabara
- Department of Neurology, Chiba University Hospital, Chiba, Japan
| | - Sonoko Misawa
- Department of Neurology, Chiba University Hospital, Chiba, Japan
| | - Masahiro Mori
- Department of Neurology, Chiba University Hospital, Chiba, Japan
| | - Yuta Iwai
- Department of Neurology, Chiba University Hospital, Chiba, Japan
| | - Kazuhide Ochi
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University School of Medicine, Hiroshima, Japan
| | - Hidekazu Suzuki
- Department of Neurology, Kindai University Faculty of Medicine, Osaka, Japan
| | - Hiroyuki Nodera
- Department of Neurology, Tokushima University School of Medicine, Tokushima, Japan
| | - Akira Tamaoka
- Department of Neurology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Masahiro Iijima
- Department of Neurology, Nagoya University School of Medicine, Aichi, Japan
| | - Tatsushi Toda
- Division of Neurology, Kobe University Graduate School of Medicine, Hyogo, Japan
| | - Hiroo Yoshikawa
- Division of Neurology, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan
| | - Takashi Kanda
- Department of Neurology, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | | | - Susumu Kusunoki
- Department of Neurology, Kindai University Faculty of Medicine, Osaka, Japan
| | - Gen Sobue
- Department of Neurology, Nagoya University School of Medicine, Aichi, Japan.,Research Division of Dementia and Neurodegenerative Disease, Nagoya University Graduate School of Medicine, Aichi, Japan
| | - Ryuji Kaji
- Department of Neurology, Tokushima University School of Medicine, Tokushima, Japan
| | | |
Collapse
|
19
|
Abstract
Concurrent association of idiopathic thrombocytopenic purpura (ITP) and peripheral neuropathy is a rare condition. There are only few case reports published concerning peripheral neuropathy with ITP. One of the etiopathogenetic mechanisms proposed is intraneural hemorrhage, but the pathogenesis is not fully understood. Autoimmune nature with common antibodies to the platelets and the nerve´s myelin sheath should also be considered. Here we describe a 47-year-old woman, with a family history of autoimmune diseases. She was diagnosed 2 years ago with ITP and later developed a chronic combined inflammatory demyelinating polyneuropathy. Treatment with high-dose steroids was initiated with a poor response. The patient showed a clear improvement in platelet count and in the peripheral neuropathy symptoms when treatment with intravenous immunoglobulin was administered. Common etiologic mechanism of the two diseases should be considered, both, because of the simultaneous time of development and a similar response to intravenous immunoglobulin treatment.
Collapse
Affiliation(s)
- Valeria Katchan
- Departamento de Medicina Interna, Hospital La Paz, Madrid, Spain.,Zabludowicz Center for Autoimmune Diseases, Chaim Sheba Medical Center, 52621, Tel-Hashomer, Israel
| | - Paula David
- Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil.,Zabludowicz Center for Autoimmune Diseases, Chaim Sheba Medical Center, 52621, Tel-Hashomer, Israel
| | - Yehuda Shoenfeld
- Zabludowicz Center for Autoimmune Diseases, Chaim Sheba Medical Center, 52621, Tel-Hashomer, Israel. .,Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.
| |
Collapse
|
20
|
Martinez-Thompson JM, Snyder MR, Ettore M, McKeon A, Pittock SJ, Roforth MM, Mandrekar J, Mauermann ML, Taylor BV, Dyck PJB, Windebank AJ, Klein CJ. Composite ganglioside autoantibodies and immune treatment response in MMN and MADSAM. Muscle Nerve 2018; 57:1000-1005. [DOI: 10.1002/mus.26051] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/19/2017] [Indexed: 12/14/2022]
Affiliation(s)
| | - Melissa R. Snyder
- Department of Laboratory Medicine and Pathology; Mayo Clinic and Mayo Foundation; Rochester Minnesota USA
| | - Michael Ettore
- Department of Laboratory Medicine and Pathology; Mayo Clinic and Mayo Foundation; Rochester Minnesota USA
| | - Andrew McKeon
- Department of Neurology; 200 First Street Southwest Rochester Minnesota 55905 USA
- Division of Autoimmune Neurology; Mayo Clinic and Mayo Foundation; Rochester Minnesota USA
| | - Sean J. Pittock
- Department of Neurology; 200 First Street Southwest Rochester Minnesota 55905 USA
- Division of Autoimmune Neurology; Mayo Clinic and Mayo Foundation; Rochester Minnesota USA
| | - Matthew M. Roforth
- Department of Neurology; 200 First Street Southwest Rochester Minnesota 55905 USA
| | - Jay Mandrekar
- Division of Biostatistics; Mayo Clinic and Mayo Foundation; Rochester Minnesota USA
| | | | - Bruce V. Taylor
- Menzies Institute for Medical Research; University of Tasmania; Tasmania Australia
| | - P. James B. Dyck
- Department of Neurology; 200 First Street Southwest Rochester Minnesota 55905 USA
| | - Anthony J. Windebank
- Department of Neurology; 200 First Street Southwest Rochester Minnesota 55905 USA
| | - Christopher J. Klein
- Department of Neurology; 200 First Street Southwest Rochester Minnesota 55905 USA
- Department of Laboratory Medicine and Pathology; Mayo Clinic and Mayo Foundation; Rochester Minnesota USA
| |
Collapse
|
21
|
Bone MA. Multifocal Motor Neuropathy: A clinical case study. AUSTRALASIAN JOURNAL OF NEUROSCIENCE 2018. [DOI: 10.21307/ajon-2017-011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
|
22
|
Neuropatie motorie multifocali con blocco della conduzione. Neurologia 2017. [DOI: 10.1016/s1634-7072(17)85563-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
23
|
Nobile-Orazio E, Gallia F, Terenghi F, Bianco M. Comparing treatment options for chronic inflammatory neuropathies and choosing the right treatment plan. Expert Rev Neurother 2017; 17:755-765. [DOI: 10.1080/14737175.2017.1340832] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Eduardo Nobile-Orazio
- Department of Medical Biotechnology and Translational Medicine (BIOMETRA), University of Milan, Milan, Italy
- Neuromuscular and Neuroimmunology Service, IRCCS Humanitas Clinical Institute, Milan, Italy
| | - Francesca Gallia
- Neuromuscular and Neuroimmunology Service, IRCCS Humanitas Clinical Institute, Milan, Italy
| | - Fabrizia Terenghi
- Neuromuscular and Neuroimmunology Service, IRCCS Humanitas Clinical Institute, Milan, Italy
| | - Mariangela Bianco
- Neuromuscular and Neuroimmunology Service, IRCCS Humanitas Clinical Institute, Milan, Italy
| |
Collapse
|
24
|
Jongbloed BA, Bos JW, Rutgers D, van der Pol WL, van den Berg LH. Brachial plexus magnetic resonance imaging differentiates between inflammatory neuropathies and does not predict disease course. Brain Behav 2017; 7:e00632. [PMID: 28523213 PMCID: PMC5434176 DOI: 10.1002/brb3.632] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 12/10/2016] [Indexed: 11/09/2022] Open
Abstract
OBJECTIVE The main objective of this study was to evaluate the correlation between the distribution of brachial plexus magnetic resonance imaging (MRI) abnormalities and clinical weakness, and to evaluate the value of brachial plexus MRI in predicting disease course and response to treatment in multifocal motor neuropathy (MMN), Lewis-Sumner syndrome (LSS) and chronic inflammatory demyelinating polyradiculoneuropathy (CIDP). METHODS Sixty-seven patients with an inflammatory neuropathy diagnosed at our tertiary referral center for neuromuscular diseases had undergone bilateral T2-weighted short tau inversion recovery (STIR) MRI of the brachial plexus. We obtained clinical follow-up data and scored all MRIs for abnormalities and the symmetry of their distribution. RESULTS Brachial plexus MRI abnormalities were detected in 45% of the patients. An abnormal MRI did not predict disease course in terms of patterns of weakness, sensory disturbances or response to treatment. Within the spectrum of radiological abnormalities, asymmetrical clinical syndromes, MMN and LSS were significantly associated with asymmetrical radiological abnormalities, whereas symmetrical abnormalities predominated in CIDP (p < .001, phi 0.791). CONCLUSION T2 STIR brachial plexus MRI abnormalities correspond with the distribution of neurological deficits in inflammatory neuropathies, but do not correlate with specific clinical characteristics, response to treatment or disease course.
Collapse
Affiliation(s)
- Bas A Jongbloed
- Department of Neurology University Medical Center Utrecht Utrecht Netherlands
| | - Jeroen W Bos
- Department of Neurology University Medical Center Utrecht Utrecht Netherlands
| | - Dirk Rutgers
- Department of Radiology University Medical Center Utrecht Utrecht Netherlands
| | | | | |
Collapse
|
25
|
Nobile-Orazio E, Cocito D, Briani C, Plasmati R, Schenone A, Gallia F, Marjanovic I, Suffredini AL. High-dose Ig VENA is well tolerated and efficacious in patients with multifocal motor neuropathy. Neurol Sci 2017; 38:899-902. [PMID: 28144763 DOI: 10.1007/s10072-017-2826-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 01/19/2017] [Indexed: 11/27/2022]
Abstract
Multifocal motor neuropathy (MMN) is a rare, chronic, motor neuropathy that progressively impairs physical functioning and quality of life. Randomised controlled trials have shown that high-dose intravenous immunoglobulin (IVIg) is superior to placebo in improving muscle strength and disability, but many patients require periodic infusions to maintain long-term improvement. This observational, multicentre, retrospective study investigated the efficacy and tolerability of human normal immunoglobulin (Ig VENA) at high intravenous infusion rates in 20 MMN patients (14 male, 6 female). Thirty days after the first infusion, there was an improvement of at least 1 point in two muscles compared to baseline on the Medical Research Council (MRC) scale and of 1 point in the ONLS (Overall Neuropathy Limitation Scale) scale in 15 patients (75%) and 10 patients (50%), respectively; 45% improved on both scales. At 6 months, 100% of 12 patients had improved on the MRC and 79% of 14 patients had improved on the ONLS scale; 83% improved on both scales. All reported adverse drug reactions (ADR) were mild, transient and possibly related to the study drug. Four patients (20%) reported ADRs, three reported headache and one fever. There were no serious or unexpected ADRs. By confirming that high-dose Ig VENA is efficacious and well tolerated, this study adds to the evidence base for IVIg in MMN and potentially increases clinicians' and patients' choice of therapy.
Collapse
Affiliation(s)
- Eduardo Nobile-Orazio
- Department of Medical Biotechnology and Translational Medicine (BIOMETRA), Neuromuscular and Neuroimmunology Service, Humanitas Clinical and Research Centre, Milan University, Rozzano, Milan, Italy.
- Department of Medical Biotechnology and Translational Medicine, Neuromuscular and Neuroimmunology Service, Humanitas Clinical and Research Institute, Milan University, Via Manzoni 56, 20089, Rozzano, Milan, Italy.
| | - Dario Cocito
- Neurology 2, Neuroscience Department, Turin University, Turin, Italy
| | - Chiara Briani
- Department of Neurosciences, Padua University, Padua, Italy
| | | | - Angelo Schenone
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal and Child Health, Genoa University, Genoa, Italy
| | - Francesca Gallia
- Department of Medical Biotechnology and Translational Medicine (BIOMETRA), Neuromuscular and Neuroimmunology Service, Humanitas Clinical and Research Centre, Milan University, Rozzano, Milan, Italy
| | - Ivan Marjanovic
- Kedrion Biopharma, Medical Affairs, Castelvecchio Pascoli, Lucca, Italy
| | | |
Collapse
|
26
|
Perez EE, Orange JS, Bonilla F, Chinen J, Chinn IK, Dorsey M, El-Gamal Y, Harville TO, Hossny E, Mazer B, Nelson R, Secord E, Jordan SC, Stiehm ER, Vo AA, Ballow M. Update on the use of immunoglobulin in human disease: A review of evidence. J Allergy Clin Immunol 2016; 139:S1-S46. [PMID: 28041678 DOI: 10.1016/j.jaci.2016.09.023] [Citation(s) in RCA: 371] [Impact Index Per Article: 46.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 09/12/2016] [Accepted: 09/23/2016] [Indexed: 12/20/2022]
Abstract
Human immunoglobulin preparations for intravenous or subcutaneous administration are the cornerstone of treatment in patients with primary immunodeficiency diseases affecting the humoral immune system. Intravenous preparations have a number of important uses in the treatment of other diseases in humans as well, some for which acceptable treatment alternatives do not exist. We provide an update of the evidence-based guideline on immunoglobulin therapy, last published in 2006. Given the potential risks and inherent scarcity of human immunoglobulin, careful consideration of its indications and administration is warranted.
Collapse
Affiliation(s)
- Elena E Perez
- Allergy Associates of the Palm Beaches, North Palm Beach, Fla.
| | - Jordan S Orange
- Department of Pediatrics, Section of Immunology Allergy and Rheumatology, Center for Human Immunobiology, Texas Children's Hospital and Baylor College of Medicine, Houston, Tex
| | - Francisco Bonilla
- Department of Pediatrics, Clinical Immunology Program, Children's Hospital Boston and Harvard Medical School, Boston, Mass
| | - Javier Chinen
- Department of Pediatrics, Section of Immunology Allergy and Rheumatology, Center for Human Immunobiology, Texas Children's Hospital and Baylor College of Medicine, Houston, Tex
| | - Ivan K Chinn
- Department of Pediatrics, Section of Immunology Allergy and Rheumatology, Center for Human Immunobiology, Texas Children's Hospital and Baylor College of Medicine, Houston, Tex
| | - Morna Dorsey
- Department of Pediatrics, Allergy, Immunology and BMT Division, Benioff Children's Hospital and University of California, San Francisco, Calif
| | - Yehia El-Gamal
- Department of Pediatrics, Pediatric Allergy and Immunology Unit, Children's Hospital and Ain Shams University, Cairo, Egypt
| | - Terry O Harville
- Departments of Pathology and Laboratory Services and Pediatrics, University of Arkansas, Little Rock, Ark
| | - Elham Hossny
- Department of Pediatrics, Pediatric Allergy and Immunology Unit, Children's Hospital and Ain Shams University, Cairo, Egypt
| | - Bruce Mazer
- Department of Pediatrics, Allergy and Immunology, Montreal Children's Hospital and McGill University, Montreal, Quebec, Canada
| | - Robert Nelson
- Department of Medicine and Pediatrics, Division of Hematology and Oncology and Stem Cell Transplantation, Riley Hospital, Indiana University School of Medicine and the IU Melvin and Bren Simon Cancer Center, Indianapolis, Ind
| | - Elizabeth Secord
- Department of Pediatrics, Wayne State University, Children's Hospital of Michigan, Detroit, Mich
| | - Stanley C Jordan
- Nephrology & Transplant Immunology, Kidney Transplant Program, David Geffen School of Medicine at UCLA and Cedars-Sinai Medical Center, Los Angeles, Calif
| | - E Richard Stiehm
- Department of Pediatrics, David Geffen School of Medicine at UCLA, Los Angeles, Calif
| | - Ashley A Vo
- Transplant Immunotherapy Program, Comprehensive Transplant Center, Kidney Transplant Program, Cedars-Sinai Medical Center, Los Angeles, Calif
| | - Mark Ballow
- Department of Pediatrics, Division of Allergy & Immunology, University of South Florida, Morsani College of Medicine, Johns Hopkins All Children's Hospital, St Petersburg, Fla
| |
Collapse
|
27
|
Ishigaki H, Hiraide T, Miyagi Y, Hayashi T, Matsubayashi T, Shimoda A, Kusunoki S, Fukuda T. Childhood-Onset Multifocal Motor Neuropathy With Immunoglobulin M Antibodies to Gangliosides GM1 and GM2: A Case Report and Review of the Literature. Pediatr Neurol 2016; 62:51-7. [PMID: 27400822 DOI: 10.1016/j.pediatrneurol.2016.03.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 03/28/2016] [Accepted: 03/30/2016] [Indexed: 10/21/2022]
Abstract
Multifocal motor neuropathy is a rare immune-mediated neuropathy characterized by progressive asymmetric weakness and atrophy without sensory abnormalities. Although disease onset is usually in adulthood, a few childhood-onset cases have been reported. Here, we report the case of an 8-year-old boy with multifocal motor neuropathy who presented with a slowly progressive left and distal upper limb weakness without sensory loss. The initial high-dose intravenous immunoglobulin treatment significantly improved left upper limb muscle weakness. Continued monthly intravenous immunoglobulin treatment gradually improved muscle strength for several months initially. While the muscle strength decreased slightly after 8 months of therapy, it was better than that before intravenous immunoglobulin treatment. One year and eight months after the initiation of treatment, serum testing for IgM antibodies to gangliosides, GM1 and GM2, was negative. This is the first pediatric report of the serum IgM autoantibodies positive to GM1 and GM2. The clinical course is similar to that of partial intravenous immunoglobulin responders among patients with adulthood-onset multifocal motor neuropathy. Since the symptoms plateaued after the initial intravenous immunoglobulin therapy, prognosis appears to be determined by the patient's initial response to intravenous immunoglobulin treatment.
Collapse
Affiliation(s)
- Hidetoshi Ishigaki
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu city, Shizuoka, Japan
| | - Takuya Hiraide
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu city, Shizuoka, Japan
| | - Yoshifumi Miyagi
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu city, Shizuoka, Japan
| | - Taiju Hayashi
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu city, Shizuoka, Japan
| | - Tomoko Matsubayashi
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu city, Shizuoka, Japan
| | - Ayumi Shimoda
- Department of Rehabilitation, Hamamatsu University School of Medicine, Hamamatsu city, Shizuoka, Japan
| | - Susumu Kusunoki
- Department of Neurology, Kinki University School of Medicine, Osakasayama, Osaka, Japan
| | - Tokiko Fukuda
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu city, Shizuoka, Japan.
| |
Collapse
|
28
|
Ivanovski T, Miralles F. Differential weakness of finger extensor muscles: A clinical pattern of multifocal motor neuropathy. Muscle Nerve 2016; 55:433-437. [PMID: 27396516 DOI: 10.1002/mus.25247] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/06/2016] [Indexed: 11/08/2022]
Abstract
INTRODUCTION Several studies have suggested that differential weakness in muscles supplied by the same motor nerve supports the diagnosis of multifocal motor neuropathy (MMN). METHODS We describe the clinical, electrophysiological, neuroimaging, and laboratory findings of patients with a lower motor syndrome whose clinical presentation included differential finger extension weakness that we have seen in our neuromuscular clinic. RESULTS We identified 3 patients with hand weakness and 1 patient with asymmetric weakness of the upper extremity. Conduction blocks (CBs) were identified in 1 patient. Anti-GM1 immunoglobulin M antibodies were detected in 2 of the 3 patients tested. Only 1 patient responded to intravenous immunoglobulin (IVIg). Rituximab was administered in another patient, but we did not detect a response. CONCLUSIONS We suggest that differential finger extension weakness is a feature that may be seen in MMN, even in the absence of CB or response to IVIg. Muscle Nerve 55: 433-437, 2017.
Collapse
Affiliation(s)
- Trajche Ivanovski
- Department of Neurology, Hospital Universitari Son Espases, Carretera de Valldemossa, 79, 07120 Palma de Mallorca, Balearic Islands, Spain
| | - Francesc Miralles
- Department of Neurology, Hospital Universitari Son Espases, Carretera de Valldemossa, 79, 07120 Palma de Mallorca, Balearic Islands, Spain
| |
Collapse
|
29
|
Stangel M, Gold R, Pittrow D, Baumann U, Borte M, Fasshauer M, Hensel M, Huscher D, Reiser M, Sommer C. Treatment of patients with multifocal motor neuropathy with immunoglobulins in clinical practice: the SIGNS registry. Ther Adv Neurol Disord 2016; 9:165-79. [PMID: 27134672 DOI: 10.1177/1756285616629869] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVES The management of patients with multifocal motor neuropathy (MMN) under everyday clinical conditions has been insufficiently studied. We therefore collected comprehensive observational data on patients with MMN who received intravenous (IV) or subcutaneous (SC) immunoglobulins (IGs) as maintenance therapy. METHODS This was a prospective, noninterventional study (registry) in neurological centres (hospitals and offices) throughout Germany. RESULTS As of 1 December 2015, 80 patients with MMN were included (mean age 55.4 ± 9.8 years, 67% males, mean disease duration 10.7 ± 10.2 years). The affected limb regions were predominantly distal muscle groups of the upper extremities. On the inflammatory neuropathy cause and treatment (INCAT) scale, 94% of the patients had some disability in the arms and 61% in the legs. At inclusion, 98.8% received IVIG and 1.3% SCIG. Substantial variation was observed between IVIG treatment intervals (every 0.7 to 17.3 weeks) and dosage (0.2-2.1 g/kg body weight received during a single administration; mean monthly dosage, 0.9 g/kg body weight). However, the mean monthly dosage was steady over time. At 1-year follow up, improvement was seen in muscle strength, INCAT and quality of life (QoL) scores (SF-36 questionnaire). CONCLUSIONS The management of patients with MMN in everyday clinical practice demonstrates a wide range of absolute dosages and treatment intervals of IG, supporting the recommended practice of determining treatment dose on an individual patient basis. The improvements in muscle strength and reduction in disability, accompanied by increased QoL, strengthen the case for use of IG as a maintenance treatment for MMN.
Collapse
Affiliation(s)
- Martin Stangel
- Clinical Neuroimmunology and Neurochemistry, Department of Neurology, Hanover Medical School, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany
| | - Ralf Gold
- Department for Neurology, St. Josef-Hospital, Ruhr University Bochum, Germany
| | - David Pittrow
- Institute for Clinical Pharmacology, Medical Faculty, Technical University Dresden, Germany
| | - Ulrich Baumann
- Paediatric Pulmonology, Allergy and Neonatology, Hanover Medical School, Hanover, Germany
| | - Michael Borte
- Paediatric Rheumatology, Immunology and Infectiology, Hospital St. Georg, Leipzig, Germany
| | - Maria Fasshauer
- Paediatric Rheumatology, Immunology and Infectiology, Hospital St. Georg, Leipzig, Germany
| | | | - Dörte Huscher
- Epidemiology, German Rheumatism Research Centre, Berlin, Germany and; Rheumatology and Clinical Immunology, Charité University Hospital, Berlin, Germany
| | - Marcel Reiser
- PIOH - Praxis Internistische Onkologie, Hämatologie, Köln, Germany
| | - Claudia Sommer
- Department of Neurology, University Hospital Würzburg, Germany
| |
Collapse
|
30
|
Abstract
Immunotherapy has been investigated in a small subset of peripheral neuropathies, including an acute one, Guillain-Barré syndrome, and 3 chronic forms: chronic inflammatory demyelinating polyradiculoneuropathy, multifocal motor neuropathy, and neuropathy associated with IgM anti-myelin-associated glycoprotein. Several experimental studies and clinical data are strongly suggestive of an immune-mediated pathogenesis. Either cell-mediated mechanisms or antibody responses to Schwann cell, compact myelin, or nodal antigens are considered to act together in an aberrant immune response to cause damage to peripheral nerves. Immunomodulatory treatments used in these neuropathies aim to act at various steps of this pathogenic process. However, there are many phenotypic variants and, consequently, there is a significant difference in the response to immunotherapy between these neuropathies, as well as a need to improve our knowledge and long-term management of chronic forms.
Collapse
Affiliation(s)
- Jean-Marc Léger
- National Referral Center for Rare Neuromuscular Diseases, Institut Hospitalo-Universitaire de Neurosciences, University Hospital Pitié-Salpêtrière and University Pierre et Marie Curie (Paris VI), Paris, France.
| | - Raquel Guimarães-Costa
- National Referral Center for Rare Neuromuscular Diseases, Institut Hospitalo-Universitaire de Neurosciences, University Hospital Pitié-Salpêtrière and University Pierre et Marie Curie (Paris VI), Paris, France
| | - Cristina Muntean
- National Referral Center for Rare Neuromuscular Diseases, Institut Hospitalo-Universitaire de Neurosciences, University Hospital Pitié-Salpêtrière and University Pierre et Marie Curie (Paris VI), Paris, France
| |
Collapse
|
31
|
Jovanovich E, Karam C. Human immune globulin infusion in the management of multifocal motor neuropathy. Degener Neurol Neuromuscul Dis 2015; 6:1-12. [PMID: 30050363 PMCID: PMC6053084 DOI: 10.2147/dnnd.s96258] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Multifocal motor neuropathy (MMN) is a debilitating and rare disease causing profound weakness with minimal to no sensory symptoms. Conduction block is frequently seen on electrodiagnostic testing. An immune-mediated pathology is suspected though the exact underlying pathophysiology has yet to be elucidated. The presence of anti-GM1 ganglioside IgM antibodies coupled with favorable response to intravenous and subcutaneous immunoglobulins supports a complement-mediated mechanism which leads to destruction of nerve tissue with probable predilection to the nodes of Ranvier. High-dose immunoglobulin currently is the only treatment with proven efficacy for MMN patients. Unfortunately, many patients experience decreased responsiveness to immunoglobulins over time, requiring higher and more frequent dosing. In this review, we will focus on the pharmacology, efficacy, safety, and tolerability of intravenous and subcutaneous immune globulin infusion for treatment of MMN.
Collapse
Affiliation(s)
| | - Chafic Karam
- Department of Neurology, The University of North Carolina, Chapel Hill, NC, USA,
| |
Collapse
|
32
|
Bembeeva RT, Zavadenko NN. [Intravenous immunoglobulin in treatment of autoimmune neurological diseases in children]. Zh Nevrol Psikhiatr Im S S Korsakova 2015; 115:83-93. [PMID: 26356621 DOI: 10.17116/jnevro20151156183-93] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Though the mechanisms of action of intravenous immunoglobulins (IVIG) are not completely understood, these drugs are widely used in treatment of autoimmune diseases. In this review, we have analyzed the literature on the use of IVIG in the treatment of autoimmune diseases of the nervous system in children and discuss the management of patients basing on the recommendation of the European Federation of Neurological Societies. The efficacy of IVIG in children has been shown as first line treatment in Guillain-Barre syndrome, chronic inflammatory demyelinating polyneuropathy, multifocal motor neuropathy, dermatomyositis as a second-line drug in the combination with prednisolone or immunosuppressors in patients refractory to treatment with corticosteroids and cytostatics, myasthenic crisis in myasthenia gravis, exacerbations and short-term treatment of severe forms, non-responsiveness to acetylcholinesterase inhibitors, multiple sclerosis as second or third line of treatment in patients with relapsing-remitting course with intolerance to standard immunomodulatory therapy, acute multiple encephalomyelitis with no response to the treatment with high doses of corticosteroids, paraneoplastic syndromes, pharmacoresistant epilepsy and autoimmune encephalitis. Because the right choice of the drug plays a key role, in particular, in children, that determines the efficacy and safety of the treatment, we present the main approaches to the choice of the drug and schemes of treatment of autoimmune diseases of the nervous system in children.
Collapse
Affiliation(s)
- R Ts Bembeeva
- Pirogov Russian National Research Medical University, Moscow
| | - N N Zavadenko
- Pirogov Russian National Research Medical University, Moscow
| |
Collapse
|
33
|
Léger JM, Guimarães-Costa R, Iancu Ferfoglia R. The pathogenesis of multifocal motor neuropathy and an update on current management options. Ther Adv Neurol Disord 2015; 8:109-22. [PMID: 25941538 PMCID: PMC4409549 DOI: 10.1177/1756285615575269] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Multifocal motor neuropathy (MMN) is a rare and disabling disease. Several experimental studies and clinical data are strongly suggestive of an immune-mediated pathogenesis, although underlying mechanisms in MMN seem to be very specific, mainly because of the presence of IgM anti-GM1 serum antibodies and the dramatic response to intravenous immunoglobulins (IVIg). The origin of antiganglioside antibodies and the way in which they act at the molecular level remain unclear. Several studies have demonstrated the key role of complement activation in the underlying mechanisms of MMN, as well as in animal models of acute motor axonal neuropathy (AMAN). Deposition of the membrane attack complex may disrupt the architecture of the nodes of Ranvier and paranodal areas, causing local disruption of nodal sodium-channel clusters. In patients with MMN, muscle weakness is the consequence of conduction blocks (CB), which leads to secondary axonal degeneration, consequently the aim of the treatment is to reverse CB at early stages of the disease. High-dose immunoglobulin is to date the only therapy which has proven efficacy in MMN patients in providing transient improvement of muscle strength, but long-term follow-up studies show a progressive motor decline. Therefore, other therapies are needed to improve the conduction nerve properties in long-term design. The reduction of complement activation and more generally the gain in paranodal stabilization could be directions for future therapeutic strategies.
Collapse
Affiliation(s)
- Jean-Marc Léger
- National Referral Center for rare Neuromuscular Diseases, Institut Hospitalo-Universitaire de Neurosciences, University Hospital Pitié-Salpêtrière and University Pierre et Marie Curie (Paris VI), 47 boulevard de l'Hôpital, 75013 Paris, France
| | - Raquel Guimarães-Costa
- National Referral Center for rare Neuromuscular Diseases, Institut Hospitalo-Universitaire de Neurosciences, University Hospital Pitié-Salpêtrière and University Pierre et Marie Curie (Paris VI), Paris, France
| | - Ruxandra Iancu Ferfoglia
- National Referral Center for rare Neuromuscular Diseases, Institut Hospitalo-Universitaire de Neurosciences, University Hospital Pitié-Salpêtrière and University Pierre et Marie Curie (Paris VI), Paris, France
| |
Collapse
|
34
|
Léger JM. Immunoglobulin (Ig) in multifocal motor neuropathy (MMN): update on evidence for Ig treatment in MMN. Clin Exp Immunol 2015; 178 Suppl 1:42-4. [PMID: 25546756 DOI: 10.1111/cei.12505] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- J-M Léger
- National Referral Centre for Neuromuscular Diseases, University Hospital Pitié-Salpêtrière and University Paris VI, Paris, France
| |
Collapse
|
35
|
Umapathi T, Hughes RAC, Nobile‐Orazio E, Léger J. Immunosuppressant and immunomodulatory treatments for multifocal motor neuropathy. Cochrane Database Syst Rev 2015; 2015:CD003217. [PMID: 25739040 PMCID: PMC6781840 DOI: 10.1002/14651858.cd003217.pub5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Multifocal motor neuropathy (MMN) is characterised by progressive, predominantly distal, asymmetrical limb weakness and usually multiple partial motor nerve conduction blocks. Intravenous immunoglobulin (IVIg) is beneficial but the role of immunosuppressive agents is uncertain. This is an update of a review first published in 2002 and previously updated in 2003, 2005, 2008 and 2011. OBJECTIVES To assess the effects of immunosuppressive agents for the treatment of multifocal motor neuropathy. SEARCH METHODS On 22 September 2014 we searched the Cochrane Neuromuscular Disease Group Specialized Register, CENTRAL, MEDLINE, EMBASE and LILACS for trials of MMN. We also searched two trials registers for ongoing studies. SELECTION CRITERIA We planned to include randomised controlled trials (RCTs) and quasi-RCTs. We considered prospective and retrospective case series and case reports in the Discussion. DATA COLLECTION AND ANALYSIS Two review authors searched the titles and abstracts of the articles identified and extracted the data independently. MAIN RESULTS Only one RCT of an immunosuppressive or immunomodulatory agent has been performed in MMN. This study randomised 28 participants and showed that mycophenolate mofetil, when used with IVIg, did not significantly improve strength, function or reduce the need for IVIg. No serious adverse events were observed. The study was deemed at low risk of bias. We summarised the results of retrospective and prospective case series in the discussion. AUTHORS' CONCLUSIONS According to moderate quality evidence, mycophenolate mofetil did not produce significant benefit in terms of reducing need for IVIg or improving muscle strength in MMN. Trials of other immunosuppressants should be undertaken.
Collapse
Affiliation(s)
- T Umapathi
- National Neuroscience InstituteDepartment of Neurology11 Jalan TanTock SengSingaporeSingapore308433
| | - Richard AC Hughes
- National Hospital for Neurology and NeurosurgeryMRC Centre for Neuromuscular DiseasesPO Box 114Queen SquareLondonUKWC1N 3BG
| | - Eduardo Nobile‐Orazio
- Milan UniversityIRCCS Humanitas Clinical Institute, Neurology 2Istituto Clinico HumanitasVia Manzoni 56, RozzanoMilanItaly20089
| | - Jean‐Marc Léger
- Groupe Hospitalier Pitrie Salpêtrière and University Paris VINational Reference Center for Rare Neuromuscular DiseasesBâtiment Balinski47‐83 Boulevard de l'HôpitalParis Cedex 13France75651
| | | |
Collapse
|
36
|
Abstract
PURPOSE OF REVIEW Multifocal motor neuropathy (MMN) remains a difficult issue for neurologists, as its clinical and electrophysiological presentation may be atypical, and because no alternative treatment to periodic immunoglobulin infusions has been assessed in its long-term management. This review intends to summarize the most recent advances in the diagnosis and treatment of MMN. RECENT FINDINGS Recent reports have focused on atypical onset and unusual clinical presentation. Several sophisticated electrophysiological techniques, as triple stimulation, may help establish the presence of conduction blocks, as well as MRI findings. A recent immunological study focused on the detection of serum IgM binding to NS6S heparin disaccharide. In another research article, it was proposed that the use of combinatorial glycoarray or ELISA may increase the diagnostic sensitivity of antiglycolipid antibody testing. Subcutaneous immunoglobulin may represent an interesting alternative option to intravenous immunoglobulin. Lastly, recently reported open-label clinical trials with complement inhibitors and anti-CD20 monoclonal antibody may constitute a first step for further developments. SUMMARY Diagnostic criteria for MMN are well established, but challenging situations still occur. Progresses in neurophysiologic and other laboratory tests may help in clarifying doubtful diagnoses. Current research into the pathophysiology of MMN is required to determine the future treatment targets.
Collapse
|
37
|
Nobile-Orazio E, Gallia F. Multifocal motor neuropathy: current therapies and novel strategies. Drugs 2014; 73:397-406. [PMID: 23516024 DOI: 10.1007/s40265-013-0029-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Multifocal motor neuropathy (MMN) is a purely motor mononeuritis multiplex characterized by the presence of conduction block on motor but not on sensory nerves and by the presence of high titers of anti-GM1 antibodies. Several data point to a pathogenetic role of the immune system in this neuropathy, although this has not yet been proved. Several uncontrolled studies and randomized controlled trials have demonstrated the efficacy of therapy with high-dose intravenous immunoglobulin (IVIg) in MMN. However, this therapy has a short-lasting effect that needs to be maintained with periodic infusions. This can be partly overcome by the use of subcutaneous immunoglobulin (SCIg) at the same dose. The high cost and need for repeated infusions have led to the search for other immune therapies, the efficacy of which have not yet been confirmed in randomized trials. In addition, some therapies, including corticosteroids and plasma exchange, are not only ineffective but have been associated with clinical worsening. More recently, a number of novel therapies have been investigated in MMN, including interferon-β1a, the anti-CD20 monoclonal antibody rituximab and the complement inhibitor eculizumab. Preliminary data from open-label uncontrolled studies show that some patients improve after these therapies; however, randomized controlled trials are needed to confirm efficacy. Until then, IVIg (and SCIg) remains the mainstay of treatment in MMN, and the use of other immune therapies should only be considered for patients not responding to, or becoming resistant to, IVIg.
Collapse
Affiliation(s)
- Eduardo Nobile-Orazio
- Department of Medical Biotechnology and Translational Medicine (BIOMETRA), 2nd Neurology, Humanitas Clinical and Research Center, IRCCS Humanitas Clinical Institute, Milan University, Via Manzoni 56, Rozzano, 20089 Milan, Italy.
| | | |
Collapse
|
38
|
Rezaei N, Abolhassani H, Aghamohammadi A, Ochs HD. Indications and safety of intravenous and subcutaneous immunoglobulin therapy. Expert Rev Clin Immunol 2014; 7:301-16. [DOI: 10.1586/eci.10.104] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
39
|
Guimarães-Costa R, Bombelli F, Léger JM. Multifocal motor neuropathy. Presse Med 2013; 42:e217-24. [PMID: 23623583 DOI: 10.1016/j.lpm.2013.01.057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Accepted: 01/13/2013] [Indexed: 11/29/2022] Open
Abstract
Multifocal motor neuropathy (MMN) is a chronic immune-mediated neuropathy that is particular for its asymmetric, multifocal, purely motor clinical presentation, often related to the distribution of individual nerves. Upper limbs are usually primarily and more severely affected, but lower limbs may be involved during the course of the disease. The hallmark of the disease is the presence, in electrophysiological studies, of persistent conduction blocks in the affected motor nerves, located outside the usual sites of nerve compression, contrasting with normal sensory nerve conduction velocities. The most typical laboratory finding is the presence of high levels of serum IgM antibodies to the ganglioside GM1, and less frequently to asialo-GM1, GD1a or GM2. These striking features may help distinguishing this neuropathy from both motor neuron disease and other chronic immune-mediated neuropathies. Several randomized controlled trials (RCT) have established the efficacy of high-dose intravenous immunoglobulin (IVIg), as well as subcutaneous immunoglobulin (SCIg). However, this therapy has a short-lasting effect, and need to be maintained with periodic infusions. This disappointing status has led to the search of other immune therapies whose efficacy has not been so far confirmed in RCT. This review intends to summarize current contents in the diagnosis and the treatment of MMN.
Collapse
Affiliation(s)
- Raquel Guimarães-Costa
- Hôpital de la Salpêtrière, Referral Center for Rare Neuromuscular Diseases, Bâtiment Babinski, Paris, France
| | | | | |
Collapse
|
40
|
Multifocal motor neuropathy. J Clin Neurosci 2012; 19:1201-9. [PMID: 22743043 DOI: 10.1016/j.jocn.2012.02.011] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2012] [Revised: 02/06/2012] [Accepted: 02/13/2012] [Indexed: 11/22/2022]
Abstract
Multifocal motor neuropathy (MMN) was first described in 1988 as a purely motor neuropathy affecting multiple motor nerves. The diagnosis was based entirely on demonstrating electrophysiological evidence of a conduction block (CB) that selectively affected motor axons, with sparing of sensory axons even through the site of motor CB. Subsequently, a similar disorder was reported but with absence of demonstrable CB on routine nerve conduction studies and there is still some debate as to whether MMN without CB is related to MMN. MMN is thought to be an inflammatory neuropathy related to an immune attack on motor nerves. The conventional hypothesis is that the primary pathology is segmental demyelination, but recent research raises the possibility of a primary axonopathy. Anti-GM1 antibodies can be found in some patients but it is unclear whether these antibodies are pathogenic. Intravenous immunoglobulin is the mainstay of treatment but other immunosuppressive treatments can also be effective.
Collapse
|
41
|
Umapathi T, Hughes RAC, Nobile-Orazio E, Léger JM. Immunosuppressant and immunomodulatory treatments for multifocal motor neuropathy. Cochrane Database Syst Rev 2012:CD003217. [PMID: 22513910 DOI: 10.1002/14651858.cd003217.pub4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND Multifocal motor neuropathy is characterised by progressive, predominantly distal, asymmetrical limb weakness and usually multiple partial motor nerve conduction blocks. Intravenous immunoglobulin is beneficial but the role of immunosuppressive agents is uncertain. This is an update of a review first published in 2002 and previously updated in 2003, 2005 and 2008. OBJECTIVES To provide the best available evidence from randomised controlled trials on the role of immunosuppressive agents for the treatment of multifocal motor neuropathy. SEARCH METHODS We searched the Cochrane Neuromuscular Disease Group Specialized Register (4 October 2011), the Cochrane Central Register of Controlled Trials (CENTRAL) (2011, Issue 3 in The Cochrane Library), MEDLINE (January 1966 to September 2011), EMBASE (January 1980 to September 2011), and LILACS (January 1982 to September 2011) for trials of multifocal motor neuropathy. SELECTION CRITERIA We planned to include randomised and quasi-randomised controlled trials. We considered prospective and retrospective case series and case reports in the Discussion. DATA COLLECTION AND ANALYSIS Two review authors searched the titles and abstracts of the articles identified and extracted the data independently. MAIN RESULTS Only one randomised controlled trial of an immunosuppressive or immunomodulatory agent has been performed in multifocal motor neuropathy. This study randomised 28 participants and showed that mycophenolate mofetil, when used with intravenous immunoglobulin, did not significantly improve strength, function or reduce the need for intravenous immunoglobulin. No serious adverse events were observed. The study was deemed at low risk of bias. We summarised the results of retrospective and prospective case series in the discussion. AUTHORS' CONCLUSIONS According to moderate quality evidence, mycophenolate mofetil did not produce significant benefit in terms of reducing need for intravenous immunoglobulin or improving muscle strength. Trials of other immunosuppressants should be undertaken.
Collapse
Affiliation(s)
- T Umapathi
- Department of Neurology, National Neuroscience Institute, Singapore,
| | | | | | | |
Collapse
|
42
|
Vlam L, van der Pol WL, Cats EA, Straver DC, Piepers S, Franssen H, van den Berg LH. Multifocal motor neuropathy: diagnosis, pathogenesis and treatment strategies. Nat Rev Neurol 2011; 8:48-58. [PMID: 22105211 DOI: 10.1038/nrneurol.2011.175] [Citation(s) in RCA: 111] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
43
|
[Administration of intravenous immunoglobulins in neurology. An evidence-based consensus: update 2010]. DER NERVENARZT 2011; 82:415-6, 418, 420 passim. [PMID: 20577707 DOI: 10.1007/s00115-010-3059-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Our knowledge on the clinical efficacy of intravenous immunoglobulins (IVIg) in neurological diseases has greatly increased in the last 5 years. Liquid formulations with a higher concentration of IVIg have simplified administration. Despite a worldwide increase in plasma production it is still a valuable biological product which is why current indications must be continuously validated. Long-term efficacy of the preparation Gamunex could be demonstrated in patients with chronic inflammatory demyelinating polyneuropathy (CIDP). In acute myasthenic worsening a dose of 1 g IVIg/kg body weight appears to be sufficient for clinical stabilization. New indications, such as the postpolio syndrome or Alzheimer's disease are being explored in clinical trials. In addition to the consensus statement from 2004 the evidence for clinical use of IVIg has been re-evaluated and recommendations are given.
Collapse
|
44
|
Lehmann HC, Meyer Zu Horste G, Kieseier BC, Hartung HP. Pathogenesis and treatment of immune-mediated neuropathies. Ther Adv Neurol Disord 2011; 2:261-81. [PMID: 21179533 DOI: 10.1177/1756285609104792] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Immune-mediated neuropathies represent a heterogeneous spectrum of peripheral nerve disorders that can be classified according to time course, predominant involvement of motor/sensory fibers, distribution of deficits and paraclinical parameters such as electrophysiology and serum antibodies. In the last few years, significant advances have been achieved in elucidating underlying pathomechanisms, which made it possible to identify potential therapeutic targets. In this review, we discuss the latest development in pathogenesis and treatment of immune-mediated neuropathies.
Collapse
|
45
|
Attarian S, Verschueren A, Franques J, Salort-Campana E, Jouve E, Pouget J. Response to treatment in patients with lewis-sumner syndrome. Muscle Nerve 2011; 44:179-84. [DOI: 10.1002/mus.22024] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
46
|
Nobile-Orazio E, Giannotta C. Testing for anti-glycolipid IgM antibodies in chronic immune-mediated demyelinating neuropathies. J Peripher Nerv Syst 2011; 16 Suppl 1:18-23. [DOI: 10.1111/j.1529-8027.2011.00300.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
47
|
|
48
|
Stępień A, Korsak J, Kozubski W, Ryglewicz D, Losy J, Drozdowski W, Kotowicz J, Nyka W, Kwieciński H. Stanowisko grupy ekspertów dotyczące stosowania dożylnych immunoglobulin w leczeniu chorób układu nerwowego. Neurol Neurochir Pol 2011; 45:525-35. [DOI: 10.1016/s0028-3843(14)60119-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
49
|
Larue S, Bombelli F, Viala K, Neil J, Maisonobe T, Bouche P, Musset L, Fournier E, Léger JM. Non-anti-MAG DADS neuropathy as a variant of CIDP: clinical, electrophysiological, laboratory features and response to treatment in 10 cases. Eur J Neurol 2010; 18:899-905. [PMID: 21199182 DOI: 10.1111/j.1468-1331.2010.03312.x] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND PURPOSE Some patients within the spectrum of chronic inflammatory demyelinating polyradiculoneuropathies (CIDP) have distal acquired demyelinating symmetric (DADS) neuropathy, usually associated with anti-myelin-associated-glycoprotein (MAG) IgM monoclonal gammopathy. The aim of this retrospective study was to investigate patients with DADS neuropathy without anti-MAG antibodies, and study their response to immunotherapy. METHODS Patients were selected on the basis of (i) 'Definite CIDP' according to the EFNS/PNS Guideline criteria, (ii) The presence of disproportionately prolonged motor latencies resulting in a terminal latency index (TLI) ≤ 0.25 in at least two motor nerves and (iii) The absence of anti-MAG antibodies on ELISA. Response to immunotherapy was defined as persistent improvement by at least one point on the INCAT disability score. RESULTS Data from 146 CIDP patients were analysed, and 10 patients were included. Six had clinically pure sensory neuropathy, and four had sensorimotor neuropathy. Ataxia was present in nine patients, generalized areflexia in seven and postural tremor in two. Five of the 10 patients had abnormal sensory potentials only in the upper limbs. An associated condition was found in nine patients: two chronic lymphocytic leukaemias, four IgG monoclonal gammopathies (one associated with non-Hodgkin's lymphoma) and two IgM monoclonal gammopathies of unknown significance. Patients were mostly improved with intravenous immunoglobulin (IVIg), corticosteroids, plasma exchanges, or a combination thereof. CONCLUSION DADS neuropathy without anti-MAG antibodies is more likely to be considered a variant of CIDP. In addition, such patients should be systematically investigated for an associated haematological or immunological condition.
Collapse
Affiliation(s)
- S Larue
- Centre de Référence Maladies Neuromusculaires Rares, Hôpital Pitié-Salpêtrière and Université Paris VI, Paris, France
| | | | | | | | | | | | | | | | | |
Collapse
|
50
|
European Federation of Neurological Societies/Peripheral Nerve Society Guideline on management of multifocal motor neuropathy. Report of a Joint Task Force of the European Federation of Neurological Societies and the Peripheral Nerve Society - first revis. J Peripher Nerv Syst 2010; 15:295-301. [PMID: 21199100 DOI: 10.1111/j.1529-8027.2010.00290.x] [Citation(s) in RCA: 269] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|