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https://www.readbyqxmd.com/read/28251917/long-term-survival-in-paraneoplastic-lambert-eaton-myasthenic-syndrome
#1
Paul Maddison, Paul Gozzard, Matthew J Grainge, Bethan Lang
OBJECTIVE: To establish whether improved tumor survival in patients with Lambert-Eaton myasthenic syndrome (LEMS) and small-cell lung cancer (SCLC) was due to known prognostic risk factors or an effect of LEMS independently, perhaps as a result of circulating factors. METHODS: We undertook a prospective observational cohort study of patients with LEMS attending Nottingham University Hospitals, UK, or via the British Neurological Surveillance Unit. In parallel, patients with a new diagnosis of biopsy-proven SCLC were enrolled, examined for neurologic illness, and followed up until death or study end...
March 1, 2017: Neurology
https://www.readbyqxmd.com/read/28243504/aminopyridines-for-the-treatment-of-neurologic-disorders
#2
REVIEW
Michael Strupp, Julian Teufel, Andreas Zwergal, Roman Schniepp, Kamran Khodakhah, Katharina Feil
PURPOSE OF REVIEW: To identify the different indications for the treatment of neurologic disorders with the potassium channel blockers 4-aminopyridine (4-AP) and 3,4-diaminopyridine (3,4-DAP). RECENT FINDINGS: 4-AP is an effective symptomatic treatment for downbeat nystagmus (DBN), episodic ataxia type 2 (EA2) (5-10 mg TID), and impaired gait in multiple sclerosis (MS) (10 mg BID). 3,4-DAP (5 mg/d-20 mg TID) improves symptoms in Lambert-Eaton myasthenic syndrome (LEMS) (randomized placebo-controlled trials for all 4 entities)...
February 2017: Neurology. Clinical Practice
https://www.readbyqxmd.com/read/28178777/pediatric-lambert-eaton-myasthenic-syndrome
#3
Jorge A Avina Fierro, Daniel A Hernandez Avina
No abstract text is available yet for this article.
April 2017: Minerva Pediatrica
https://www.readbyqxmd.com/read/28078065/clinical-features-of-neuromuscular-disorders-in-patients-with-n-type-voltage-gated-calcium-channel-antibodies
#4
Andreas Totzeck, Petra Mummel, Oliver Kastrup, Tim Hagenacker
Neuromuscular junction disorders affect the pre- or postsynaptic nerve to muscle transmission due to autoimmune antibodies. Members of the group like myasthenia gravis and Lambert-Eaton syndrome have pathophysiologically distinct characteristics. However, in practice, distinction may be difficult. We present a series of three patients with a myasthenic syndrome, dropped-head syndrome, bulbar and respiratory muscle weakness and positive testing for anti-N-type voltage-gated calcium channel antibodies. In two cases anti-acetylcholin receptor antibodies were elevated, anti-P/Q-type voltage-gated calcium channel antibodies were negative...
September 15, 2016: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28006860/paraneoplastic-cerebellar-degeneration-and-lambert-eaton-myasthenia-in-a-patient-with-merkel-cell-carcinoma-and-voltage-gated-calcium-channel-antibodies
#5
Lucia Pavolucci, Giulia Giannini, Maria Pia Giannoccaro, Maria Pia Foschini, Bethan Lang, Patrizia Avoni, Paolo Tinuper, Angela Vincent, Rocco Liguori
INTRODUCTION: Merkel cell carcinoma is a rare cutaneous, aggressive tumor. Although it shares many neuroendocrine features with small cell lung carcinoma, it has only occasionally been reported with paraneoplastic neurological syndromes. METHODS: A healthy 67 year-old man developed acute ataxia, vertigo, and nausea. Subsequently he also developed dysarthria, diplopia, xerostomia, fatigability and progressive anorexia. He underwent a full diagnostic workup and was found to have a high titer of voltage-gated calcium channel antibodies in serum and cerebrospinal fluid, neurophysiological findings compatible with Lambert-Eaton myasthenia and neurological signs compatible with cerebellar degeneration...
December 22, 2016: Muscle & Nerve
https://www.readbyqxmd.com/read/27997683/lambert-eaton-myasthenic-syndrome-lems-epidemiology-and-therapeutic-response-in-the-national-veterans-affairs-va-population
#6
Daniel C Abenroth, A Gordon Smith, John E Greenlee, Sharon D Austin, Stacey L Clardy
INTRODUCTION: One nation-wide study (Netherlands) of LEMS has been published. We report LEMS epidemiology and therapeutic response in the United States Veterans Affairs (VA) population. METHODS: Medical records for all active patients (12.5 million) in the VA health system were queried for relevant ICD-9 codes for 10/1/1999 - 9/30/2013. Clinical, electrophysiologic, and serologic features were evaluated to confirm diagnosis; epidemiologic and treatment data were collected...
December 20, 2016: Muscle & Nerve
https://www.readbyqxmd.com/read/27935068/single-fiber-emg-with-concentric-electrodes-in-lambert-eaton-myasthenia
#7
Yuzhou Guan, Qingyun Ding, Mingsheng Liu, Jingwen Niu, Liying Cui
INTRODUCTION: We analyzed jitter recordings made with concentric needle electrode single-fiber EMG (CNE-SFEMG) in Lambert-Eaton myasthenia (LEM). METHODS: Fifteen subjects diagnosed with LEM were studied using CNE-SFEMG in the extensor digitorum (ED) and tibialis anterior (TA) muscles. CNE-SFEMG in the ED and TA was also used to evaluate 12 and 10 healthy controls (HCs), respectively. RESULTS: Ten men and 5 women were diagnosed with LEM based on an increase of 100% in compound muscle action potential (CMAP) amplitude during 50 Hz repetitive nerve stimulation...
December 9, 2016: Muscle & Nerve
https://www.readbyqxmd.com/read/27927941/a-population-based-epidemiologic-study-of-adult-neuromuscular-disease-in-the-republic-of-ireland
#8
Stela Lefter, Orla Hardiman, Aisling M Ryan
OBJECTIVE: To estimate the prevalence rates (PRs) of acquired and inherited neuromuscular diseases (NMD) in the adult Irish population, reflecting the burden of these conditions in a single country. METHODS: This population-based study was performed in the Republic of Ireland (RoI), with a PR estimated for December 2013. Multiple case ascertainment sources were utilized. Demographic and clinical information and relevant diagnostic results were registered. RESULTS: A total of 2,641 adults were identified, giving a PR of 62...
December 7, 2016: Neurology
https://www.readbyqxmd.com/read/27922503/myasthenia-gravis-and-lambert-eaton-myasthenic-syndrome
#9
Michael W Nicolle
PURPOSE OF REVIEW: This article discusses the pathogenesis, diagnosis, and management of autoimmune myasthenia gravis (MG) and Lambert-Eaton myasthenic syndrome (LEMS). RECENT FINDINGS: Recognition of new antigenic targets and improved diagnostic methods promise to improve the diagnosis of MG, although the clinical phenotypes associated with newer antibodies have not yet been defined. Future therapies might specifically target the aberrant immune response. The apparent increase in the prevalence of MG is not fully explained...
December 2016: Continuum: Lifelong Learning in Neurology
https://www.readbyqxmd.com/read/27816328/tubular-aggregates-in-autoimmune-lambert-eaton-myasthenic-syndrome
#10
Isabell Cordts, Fabian Funk, Jörg B Schulz, Joachim Weis, Kristl G Claeys
Tubular aggregates are accumulations of densely packed tubules in muscle fibers, occurring in distinct hereditary and acquired disorders. We present a patient with tubular aggregates and autoimmune Lambert-Eaton myasthenic syndrome. Initially, he showed mild proximal weakness, borderline decrement on 3 Hz stimulation, and slightly elevated creatine kinase. Muscle biopsy revealed tubular aggregates in type II fibers. Due to a good response to pyridostigmine, a limb-girdle myasthenia with tubular aggregates was suspected, but genetic analyses of GFPT1, DPGAT1, and ALG2 were normal...
December 2016: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/27728562/sclc-presenting-as-lambert-eaton-myasthenia-syndrome-in-a-rare-case
#11
Amit A Kothari, A L Kakrani
No abstract text is available yet for this article.
January 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27706425/clinical-and-genetic-basis-of-congenital-myasthenic-syndromes
#12
Paulo Victor Sgobbi de Souza, Gabriel Novaes de Rezende Batistella, Valéria Cavalcante Lino, Wladimir Bocca Vieira de Rezende Pinto, Marcelo Annes, Acary Souza Bulle Oliveira
Neuromuscular junction disorders represent a wide group of neurological diseases characterized by weakness, fatigability and variable degrees of appendicular, ocular and bulbar musculature involvement. Its main group of disorders includes autoimmune conditions, such as autoimmune acquired myasthenia gravis and Lambert-Eaton syndrome. However, an important group of diseases include congenital myasthenic syndromes with a genetic and sometimes hereditary basis that resemble and mimick many of the classic myasthenia neurological manifestations, but also have different presentations, which makes them a complex clinical, therapeutic and diagnostic challenge for most clinicians...
September 2016: Arquivos de Neuro-psiquiatria
https://www.readbyqxmd.com/read/27704495/neuromuscular-diseases
#13
Brett M Morrison
Neuromuscular diseases are a broadly defined group of disorders that all involve injury or dysfunction of peripheral nerves or muscle. The site of injury can be in the cell bodies (i.e., amyotrophic lateral sclerosis [ALS] or sensory ganglionopathies), axons (i.e., axonal peripheral neuropathies or brachial plexopathies), Schwann cells (i.e., chronic inflammatory demyelinating polyradiculoneuropathy), neuromuscular junction (i.e., myasthenia gravis or Lambert-Eaton myasthenic syndrome), muscle (i.e., inflammatory myopathy or muscular dystrophy), or any combination of these sites...
October 2016: Seminars in Neurology
https://www.readbyqxmd.com/read/27666913/a-diagnosis-made-by-facilitation
#14
Uma Sundar, Sanjay Gulhane, D Asole
Lambert Eaton myasthenic syndrome is a presynaptic neuromuscular junction disorder, which has unique features on electrodiagnostic testing. Here we describe a middle aged lady with symmetric, progressive, areflexic weakness in lower limbs, who had the typical electrodiagnostic findings of diffuse attenuation of motor amplitudes, and increase in these amplitudes after brief exercise of the muscle sampled.
December 2015: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27614294/the-role-of-laminins-in-the-organization-and-function-of-neuromuscular-junctions
#15
REVIEW
Robert S Rogers, Hiroshi Nishimune
The synapse between motor neurons and skeletal muscle is known as the neuromuscular junction (NMJ). Proper alignment of presynaptic and post-synaptic structures of motor neurons and muscle fibers, respectively, is essential for efficient motor control of skeletal muscles. The synaptic cleft between these two cells is filled with basal lamina. Laminins are heterotrimer extracellular matrix molecules that are key members of the basal lamina. Laminin α4, α5, and β2 chains specifically localize to NMJs, and these laminin isoforms play a critical role in maintenance of NMJs and organization of synaptic vesicle release sites known as active zones...
January 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/27506750/palliative-care-for-a-patient-with-lambert-eaton-myasthenic-syndrome-role-of-3-4-diaminopyridine
#16
Kwok-Ying Chan, Richard Shek-Kwan Chang, Vikki Wai-Kee Lau, Man-Lui Chan, Theresa Lai
Lambert-Eaton myasthenic syndrome (LEMS) is an uncommon autoimmune idiopathic or paraneoplastic syndrome producing antibodies against voltage presynaptic calcium channels. According to previous studies, many patients with LEMS experience remission in both the clinical symptoms of muscle weakness and the electrophysiologic abnormalities after successful treatment of lung SCC. However, some patients might not respond to conventional therapy and eventually require palliative care. Hereby, we reported a LEMS patient with advanced lung malignancy was referred for palliative care...
October 2016: Annals of Palliative Medicine
https://www.readbyqxmd.com/read/27475316/a-case-of-encephalomyeloradiculopathy-in-a-non-carcinomatous-patient-associated-with-p-q-type-voltage-gated-calcium-channel-antibodies
#17
Divpreet Kaur, Divisha Raheja
The presence of P/Q type voltage gated calcium channel (VGCC) antibodies has been strongly correlated with Lambert Eaton Syndrome (LES), present in 90% of non-immunocompromised patients with LES. However, there have been case reports which have shown its association between paraneoplastic syndrome affecting both central nervous system and the peripheral nervous system causing encephalomyelitis and sensory neuronopathy/neuropathy. We present a case of a young man, who presented with encephalomyelitis, and was further noted to have superimposed cervical polyradiculopathy associated with P/Q type VGCC antibodies...
November 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/27412406/review-of-the-diagnostic-challenges-of-lambert-eaton-syndrome-revealed-through-three-case-reports
#18
REVIEW
Miguel Ángel Merino-Ramírez, Charles F Bolton
Lambert-Eaton syndrome (LES) is a rare immune-mediated disorder characterized by proximal leg weakness, autonomic symptoms and hypoactive tendon reflexes. The paraneoplastic form is associated with small-cell lung cancer in 50-60% of cases, whereas the remaining cases are found in younger adults with a higher likelihood of coexisting autoimmune disease. The early recognition of LES is crucial for improving clinical outcomes but remains a major challenge. In this review, we analyze the clinical characteristics and diagnostic considerations in treating LES through a series of three case studies, one of which showed definitive response to pyridostigmine and corticosteroid combination therapy, followed by spontaneous remission...
September 2016: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/27388088/looking-after-the-mouth-evaluation-of-a-pilot-for-a-new-approach-to-training-care-home-carers-in-kent-surrey-and-sussex
#19
K A Eaton, H A Lloyd, M Wheeler, J Sullivan, C Klass, Y Allen, S Lambert-Humble
Objective This pilot study aimed to produce and evaluate training resources and training in oral health care, including oral hygiene, for carers in care homes in Surrey and Medway.Methods During two training days, for carers from these homes, short, interactive presentations were given on a range of topics relevant to oral health care and oral hygiene of older people, followed by practical training. Prior to any training all attendees completed a 39 question questionnaire to establish their baseline knowledge of oral health and hygiene...
July 8, 2016: British Dental Journal
https://www.readbyqxmd.com/read/27370896/relapse-of-both-small-cell-lung-cancer-and-lambert-eaton-myasthenic-syndrome-after-a-13-year-disease-free-survival-period
#20
Fumio Asano, Keisuke Watanabe, Masaharu Shinkai, Yoshitaka Tei, Kei Mishina, Mikiko Tanabe, Hiroshi Ishii, Masahiro Shinoda, Tadasuke Shimokawaji, Makoto Kudo, Takeshi Kaneko
Lambert-Eaton myasthenic syndrome (LEMS) is a paraneoplastic syndrome and only 3% of small cell lung carcinoma (SCLC) patients have LEMS. Moreover, the recurrence of SCLC after a disease-free survival (DFS) of more than 10 years is rare. We report a patient who had a recurrence of both SCLC and LEMS after a 13-year DFS period. A 69-year-old man was diagnosed with LEMS and SCLC (cT0N2M0, stage IIIA) 13 years ago. Chemoradiotherapy was performed and a complete response was achieved. With anticancer treatment, the LEMS symptoms was alleviated...
July 2, 2016: Chinese Journal of Cancer
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