Congenital myasthenic syndromes are rare genetic diseases involving pathologic proteins in the neuromuscular junction. Malignant hyperthermia susceptibility is a genetic disorder involving a hypermetabolic response to volatile anesthetics and depolarizing neuromuscular blocking agents. We present the first reported case of a 3-year-old boy with both congenital myasthenic syndrome and malignant hyperthermia susceptibility, resulting from a mutation in the ryanodine receptor type 1 gene, who underwent an adenotonsillectomy for severe obstructive sleep apnea. We discuss the anesthetic challenges in navigating these 3 comorbidities in the setting of airway surgery.
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http://dx.doi.org/10.1213/XAA.0000000000001723 | DOI Listing |
J Physiol
December 2024
Université Paris Cité, CNRS, ENS Paris Saclay, Centre Borelli UMR 9010, Paris, France.
Terminal Schwann cells (TSCs) are capable of regulating acetylcholine (ACh) release at the neuromuscular junction (NMJ). We have identified GABA as a gliotransmitter at mouse NMJs. When ACh activates α7 nicotinic ACh receptor (nAChRs) on TSCs, GABA is released and activates GABA receptors on the nerve terminal that subsequently reduce ACh release.
View Article and Find Full Text PDFNoro Psikiyatr Ars
November 2024
Biochemistry Laboratory, LR12ES05 "Nutrition-Functional Foods and Vascular Health", Faculty of Medicine, Monastir, Tunisia.
Dropped head syndrome is a common complication of various neurological disorders. Most commonly, dropped head syndrome is due to primary or secondary myopathy. However, neurodegenerative diseases and various other conditions can also be complicated by dropped head syndrome.
View Article and Find Full Text PDFMutations in are responsible for postsynaptic congenital myasthenic syndromes (CMS) and occur either as slow-channel syndrome or fast-channel syndrome. Slow-channel CMS due to variants responds favorably to pyridostigmine. A patient with slow-channel CMS due to a new variant that responds favorably to 3,4-diaminopyridine (3,4-DAP) has not yet been reported.
View Article and Find Full Text PDFAnn Indian Acad Neurol
November 2024
Department of Neurology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India.
Nearly 10%-15% patients with generalized myasthenia gravis (MG) have refractory disease and are candidates for newer nonconventional immunotherapies. Rituximab has emerged as an attractive option in them. We describe the efficacy and safety of rituximab in 12 patients with refractory MG treated over a period of 4 years in a tertiary care center.
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