A novel autoantibody in patients with primary hypertension:antibody against L-type Ca2+ channel

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Background Recently,it has been proposed that the autoantibodies against various cardiovascular receptors play a role in the pathogenesis of primary hypertension.In this study,we aimed to identify whether or not there are autoantibodies against cardiovascular L-type Ca2+ channels in patients with primary hypertension.Methods A peptide corresponding to the sequence 2-16 of the alc-subunit of L-type Ca2+ channel was used as an antigen to screen the autoantibodies from 90 patients with primary hypertension and 45 healthy controls by an enzyme-linked immunosorbent assay(ELISA).The clinical data of 90 hypertensive patients were compared between patients with and without these autoantibodies.Results Serum from 3(6.7%)of the 45 healthy controls,33(36.7%)of 90 hypertensives showed positive responses in ELISA(P
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