6 resultados
TWIK-related acid-sensitive K+ (TASK) channels contribute to the resting membrane potential in various kinds of cells, such as brain neurons, smooth muscle cells, and endocrine cells. Loss-of-function mutations at multiple sites in the KCNK3 gene encoding for TASK1 channels are one of the
Electrical myotonia is known to occur in a number of inherited and acquired disorders including myotonic dystrophies, channelopathies, and metabolic, toxic, and inflammatory myopathies. Yet, electrical myotonia in myasthenia gravis associated with antibodies against muscle-specific tyrosine kinase
Regulated expression of Na+ channels is indispensable to physiological events, whereas dysregulated expression of otherwise silent or even normal Na+ channel isoforms causes Na+ channelopathies; however, the regulatory mechanisms remain unknown. In quiescent cultured bovine adrenal chromaffin cells,
OBJECTIVE
Hypokalemic periodic paralysis is a muscle channelopathy based on mutations or predisposing variants or secondary to potassium wasting. In contrast to myasthenia gravis, an association with thymic hyperplasia has not yet been reported, to our knowledge.
METHODS
We report a male patient in
A mutation of KCNQ1 gene encoding the alpha subunit of the channel mediating the slow delayed rectifier K(+) current in cardiomyocytes may cause severe arrhythmic disorders. We identified KCNQ1(Y461X), a novel mutant gene encoding KCNQ1 subunit whose C-terminal domain is truncated at tyrosine 461
Multiple voltage-gated Na+ (Nav) channelopathies can be ascribed to subtle changes in the Nav macromolecular complex. Fibroblast growth factor 14 (FGF14) is a functionally relevant component of the Nav1.6 channel complex, a causative link to spinocerebellar ataxia 27 (SCA27) and an