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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

A pilot study to assess the use of protein a immunoadsorption for chronic dilated cardiomyopathy.

Dilated cardiomyopathy (DCM) is a leading cause of end-stage heart failure and cardiac transplantation. Anticardiac antibodies are common and removal of these through immunoadsorption (IA) is associated with improvement in global cardiac function. The effect of IA on regional function and quality of life (QOL) without intravenous immunoglobulin (IVIG) substitution has not been described. We performed a pilot trial using Immunosorba columns in four patients with chronic DCM and NYHA Class II-III congestive heart failure. Subjects were followed for 6 months with serial echocardiograms and validated QOL assessments. Regional and global left ventricular (LV) end-systolic deformations were assessed by two-dimensional strain echocardiography. Total IgG decreased 95% (from 1,210 +/- 274 mg/dl to 57 +/- 16 mg/dl, P = 0.003) and IgG3 decreased 61% (from 33 +/- 16 mg/dl to 13 +/- 7 mg/dl, P = 0.024). QOL improved from baseline to 6 months as assessed by the Living with Heart Failure questionnaire (from 54 +/- 18 to 19 +/- 7, P = 0.029). Mean LV ejection fraction improved from 35 to 40% at Day 5 and to 44% at 6 months (P = NS). The LV end diastolic and end systolic volumes decreased (220-202 ml, 159-130 ml, P = NS) at 6 months. Global end-systolic strain improved from -7.3% at baseline to -8.5% at Day 5 and -8.8% at 6 months (P = NS). Regional LV function and response to IA was not uniform. Even without IVIG substitution, IA for the treatment of chronic DCM is associated with improved QOL up to 6 months after treatment. A randomized, sham-controlled trial is required to confirm the benefits of IA for DCM.[1]


  1. A pilot study to assess the use of protein a immunoadsorption for chronic dilated cardiomyopathy. Cooper, L.T., Belohlavek, M., Korinek, J., Yoshifuku, S., Sengupta, P.P., Burgstaler, E.A., Winters, J.L. J. Clin. Apher (2007) [Pubmed]
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