Significats de periodic paralysis en anglès

Dominant SCN4A gain-of-function mutations are a well-established cause of myotonia and periodic paralysis.

Methods: Six unrelated Korean patients with periodic paralysis or nondystrophic myotonia associated with SCN4A mutations were included in the study.

Hypokalaemic periodic paralysis is a rare genetic neuromuscular disease characterized by episodes of skeletal muscle paralysis associated with low serum potassium.

We report a child with hypokalaemic periodic paralysis and CNS involvement, including seizures, but without mutations in the known periodic paralysis genes.

There are at present two other distinct clinical muscle disorders associated with mutations in the sodium channel: hyperkalemic periodic paralysis and paramyotonia congenita.

Despite the fact that mutations were described in genes encoding ion channels in familial hypokalaemic periodic paralysis, no definite genetic variants were found in TPP.

The mutation causing hyperkalemic periodic paralysis (HyperPP) with myotonia has previously been mapped to this gene locus by the same candidate gene approach.

Hyperkalaemic periodic paralysis (HyperPP) is due to a gain-of-function mutation of the main alpha pore of Na v 1.4.

Objective: Hypokalaemic periodic paralysis (HypoPP) is caused by mutations of Ca v 1.1, and Na v 1.4 which result in an aberrant gating pore current.

Periodic paralysis was present in only one case.