2014

Year 34

Prof. Angela Vincent

Emeritus Professor of Neuroimmunulogy,
Oxford, UK

THEME: ANTIBODIES BEHAVING BADLY - WHAT LIES BENEATH APPEARING AND DISAPPEARING NEUROLOGICAL SYNDROMES

It is well recognised that diseases of the peripheral nervous system can be caused by autoantibodies and respond well to immunotherapies, associated with a fall in antibody levels. The best examples are, of course, myasthenia gravis and Lambert-Eaton myasthenic syndrome, with antibodies to the acetylcholine receptor and voltage-gated calcium channels, respectively. Guillain-Barre syndrome and Miller-Fisher syndrome are associated with antibodies to gangliosides such as GM1 and GQ1b, although these conditions are not necessarily, exclusively, antibody- mediated. VGKC antibodies are seen in compulsive and psychotic disorders and on brain FDG-PET basal ganglia hypometabolism has been documented. They too respond to immunosuppressive treatment. In India, probably 10 patients per million per year could be diagnosed with diseases caused by antibodies.