quinidine sulfate/hypersensitivity

The slow-channel congenital myasthenic syndrome (SCCMS) is caused by gain of function mutations in subunits of the end-plate acetylcholine receptor (AChR). The mutations prolong the opening episodes of the AChR channel, leading to a depolarization block and an end-plate myopathy. Because levels of

In a retrospective survey of drug-induced hepatitis during a ten-year period, we found that quinidine sulfate was the most common offending agent. We analyzed the clinical and laboratory data of the 33 cases of quinidine-induced hepatitis and noted the following: (1) It is an easily recognized drug

A case of quinidine sulfate-induced photodermatitis is reported. The photosensitive reaction to quinidine sulfate was reproducible in the photopatch test and after oral intake plus ultraviolet A (UVA) irradiation. Eczematous dermatitis was provoked after intradermal injection of in vitro

Two vincristine-resistant Chinese hamster ovary cell lines have been shown previously to be hypersensitive to the calcium channel blocker, verapamil. They are now shown to be hypersensitive to the membrane-active agent quinidine sulfate and to the calcium channel blockers diltiazem and nicardipine.