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Voltage-Gated Calcium Channel N (VGCC-N) Antibodies

Includes 1 test
10 Days

Screening for autoantibodies against voltage-gated calcium channels N (VGCC-N), is used in the investigation of patients with suspected paraneoplastic neuropathy, with Lambert-Eaton myasthenic syndrome and cerebrovascular dysfunction.

There are several types of voltage-gated calcium channels that resemble each other but are not completely identical, the most common being the N-type found in cells throughout the brain and peripheral nervous system and the P/Q type found in Purkinje neurons in the cerebellum and in the granule cells of the cerebellum.

Antibodies against the voltage-gated calcium channels appear in paraneoplastic neuropathy e.g. in small cell lung cancer but may also be present without the presence of tumors. Antibodies against the voltage-gated calcium channels are observed in patients with Lambert-Eaton myasthenic syndrome and cerebrovascular dysfunction. These are mainly VGCC-P/Q antibodies that are of clinical significance, whereas the importance of VGCC-N antibodies is less well known. Lambert-Eaton's myasthenic syndrome (LEMS) is an autoimmune disease of the presynaptic segment of the neuromuscular synapse.

See also: Voltage-Gated Calcium Channel P/Q (VGCC-P/Q) Antibodies

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Tests includedIncludes 1 test
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