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Lidocaine and mexiletine are class 1B antiarrhythmic drugs that act on sodium channels. Lidocaine is also an important anesthetic and topical agent that is useful in the treatment of multiple pain disorders, and mexiletine is commonly used for neuropathic pain and myotonia. Both intravenous
Bulfield and others found X-linked muscular dystrophic (mdx) mouse by screening C57 BL/10 mice. The serum CK and PK are high in mdx mice, and they develop muscle degeneration 10-15 days after birth. The regeneration is vigorous in mdx mice and almost all the muscle fibers are replaced by regenerated
What do epilepsy, migraine headache, deafness, episodic ataxia, periodic paralysis, malignant hyperthermia, and generalized myotonia have in common? These human neurological disorders can be caused by mutations in genes for ion channels. Many of the channel diseases are "paroxysmal disorders" whose
We studied a kindred with an acetazolamide-responsive, episodic ataxia syndrome. Affected members experienced paroxysmal attacks of ataxia that were precipitated by exertion or stress. All but one young patient had additional neurologic symptoms that included paresthesia, weakness, headache,
A case of 38 year old man who worked with organochlorinated and Parathion during 5 years is reported. His follow-up was up to 2 years. The onset of the disease was characterized by cholinergic signs, headache, loss of weight, trembling, miokimias, fasciculations, ataxia, myotonic phenomena (in hands
Channelopathy is a term used to describe clinical problems caused by disorders of membrane ion channels. Included in this disease category are certain types of periodic paralyses, ataxia, myotonia, migraine headache, epilepsy, nephrolithiasis, and long QT syndrome. This article briefly summarizes