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3,4-Diaminopyridine is an experimental drug used in the treatment of Lambert-Eaton Syndrome. In Lambert-Eaton Syndrome, acetylcholine release is inhibited as antibodies meant to target characteristic cancers target Ca2+ channels on the prejunctional membrane instead. 3,4-Diaminopyridine works by blocking potassium channel efflux in nerve terminals so that action potential duration is increased. Ca2+ channels can then be open for longer time and allow greater acetylcholine release to stimulate muscle at end plate.
- ↑ AAEM Quality Assurance Committee. American Association of Electrodiagnostic Medicine. (2001). "Practice parameter for repetitive nerve stimulation and single fiber EMG evaluation of adults with suspected myasthena gravis or Lambert-Eaton myasthenic syndrome: summary statement". Muscle Nerve 24: 1236-1238.
- ↑ Lundh H, Nilsson O, Rosen I, Johansson S. (1993). "Practical aspects of 3,4-diaminopyridine treatment of the Lambert-Eaton myasthenic syndrome.". Acta Neurol Scand 88: 136-140.
- ↑ Judge S, Bever C (2006). "Potassium channel blockers in multiple sclerosis: neuronal Kv channels and effects of symptomatic treatment". Pharmacol. Ther. 111 (1): 224-59. PMID 16472864.
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