Myasthenia Gravis Presenting as Lutz Posterior Internuclear Ophthalmoplegia

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Source: Neuro-Ophthalmology - Category: Opthalmology Authors: Source Type: research

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Authors: Yuan JL, Xing Y, Hu WL PMID: 32051728 [PubMed]
Source: Archives of Medical Science - Category: General Medicine Tags: Arch Med Sci Source Type: research
Authors: Aoki S, Nagashima K, Furuta M, Makioka K, Fujita Y, Saito K, Kashima T, Nakajima N, Ikota H, Higuchi O, Ikeda Y Abstract We herein report the case of a 65-year-old woman diagnosed with myasthenia gravis (MG) after complaining of double vision. The patient had anti-low-density lipoprotein receptor-related protein 4 (LRP4) antibody in her serum, although antibodies against the acetylcholine receptor and muscle-specific tyrosine kinase were not detected. Chest computed tomography showed an anterior mediastinal tumor with a high uptake on fluorodeoxyglucose-positron emission tomography. Endoscopic thymectomy s...
Source: Internal Medicine - Category: Internal Medicine Tags: Intern Med Source Type: research
In conclusion we redefined the clinical spectrum of muscle involvement in MG-IM association, which represent a continuum among 3 main clinical groups: distal, proximal and subclinical muscle involvement. Minimal muscle involvement and focal myositis could be underestimated among myasthenic patients and early aggressive immunotherapy could be required in focal group.Graphical abstract
Source: Autoimmunity Reviews - Category: Allergy & Immunology Source Type: research
CONCLUSIONS These results indicate that grilled nux vomica ameliorates EAMG by depressing the TLR-4/NF-kappaB signaling pathway, and hub genes may serve as potential targets for MG treatment. PMID: 32052794 [PubMed - in process]
Source: Medical Science Monitor - Category: Research Tags: Med Sci Monit Source Type: research
AbstractLambert ‐Eaton myasthenic syndrome (LEMS) is an autoimmune neuromuscular junction disease associated with P/Q‐type voltage‐gated calcium channels (P/Q‐type VGCCs) autoantibodies1. P/Q ‐type VGCCs present at the presynaptic motor nerve terminals and their antibodies induce a reduction in neurotransmitter release, leading to the characteristic muscle weakness associated with the disease. Approximately half of LEMS patients have small‐cell lung carcinoma (SCLC) that occurs as a paraneoplastic disorder.
Source: Clinical and Experimental Neuroimmunology - Category: Neurology Authors: Tags: NEW DEVELOPMENTS IN NEUROIMMUNOLOGY Source Type: research
Myasthenia gravis (MG) is an autoimmune disease characterized by muscle weakness and fatiguability of skeletal muscles. It is an antibody-mediated disease, caused by autoantibodies targeting neuromuscular junction proteins. In the majority of patients (~85%) antibodies against the muscle acetylcholine receptor (AChR) are detected, while in 6% antibodies against the muscle-specific kinase (MuSK) are detected. In ~10% of MG patients no autoantibodies can be found with the classical diagnostics for AChR and MuSK antibodies (seronegative MG, SN-MG), making the improvement of methods for the detection of known autoantibodies or...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
Publication date: Available online 12 February 2020Source: Neuroscience LettersAuthor(s): Zora Chui-Kuen Chan, Marilyn Janice Oentaryo, Chi Wai LeeAbstractMotor neurons, skeletal muscles, and perisynaptic Schwann cells interact with extracellular matrix (ECM) to form the tetrapartite synapse in the peripheral nervous system. Dynamic remodeling of ECM composition is essential to diversify its functions for distinct cellular processes during neuromuscular junction (NMJ) development. In this review, we give an overview of the proteolytic regulation of ECM proteins, particularly by secreted and membrane-type matrix metalloprot...
Source: Neuroscience Letters - Category: Neuroscience Source Type: research
Azathioprine (AZA) is the most common immunosuppressive drug used to treat myasthenia gravis (MG). To analyses the prevalence of thiopurine S-methyl-transferase (TPMT) genotypes and their association with adverse events due to azathioprine therapy in MG patients. Allele-specific polymerase chain reaction (PCR) and PCR with restriction fragment length polymorphism (RFLP) analysis were carried out to determine the prevalence of the most common TPMT genotypes (*2, *3A, *3B and *3C) in 50 MG patients from Southern Brazilian.
Source: Journal of the Neurological Sciences - Category: Neurology Authors: Tags: Clinical short communication Source Type: research
ACS Chemical NeuroscienceDOI: 10.1021/acschemneuro.9b00678
Source: ACS Chemical Neuroscience - Category: Neuroscience Authors: Source Type: research
We report a patient with a pathogenic de novo SCN4A variant, c.2386C>G p.L769V at a highly conserved leucine. The phenotype was manifest at birth with arthrogryposis multiplex congenita, severe episodes of bronchospasm that responded immediately to carbamazepine therapy, and electromyographic evidence of widespread myotonia. Another de novo case of p.L769V has been reported with hip dysplasia, scoliosis, myopathy, and later paramyotonia. Expression studies of L796V mutant channels showed predominantly gain-of-function changes, that included defects of slow inactivation. Computer simulations of muscle excitability reveal...
Source: Frontiers in Neurology - Category: Neurology Source Type: research
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