当前位置： SCI文献检索 > JOURNAL OF MOLECULAR AND CELLULAR CARDIOLOGY期刊下所有文献 > Specific removal of beta1-adrenoceptor autoantibodies by immunoabsorption in rabbits with autoimmune cardiomyopathy improved cardiac structure and function.

Specific removal of beta1-adrenoceptor autoantibodies by immunoabsorption in rabbits with autoimmune cardiomyopathy improved cardiac structure and function.

Abstract：

:Growing evidence suggests that the beta1-adrenoceptor-directed autoimmune mechanism may play an important role in the pathogenesis of idiopathic dilated cardiomyopathy. The aim of this study is to further study the effect of specific immunoabsorption of anti-beta1-adrenoceptor autoantibodies on cardiac structure and function in autoimmune cardiomyopathy in rabbits. Twenty-four male rabbits were divided into 2 groups: (1) one immunized with beta1-adrenoceptor peptide (beta1 group, n=16), and (2) the other receiving saline injection as a control (control group, n=8). Immunization was performed once a month for 8 months. A high concentration of anti-beta1-adrenoceptor autoantibodies was exhibited throughout the immunization period. Rabbits in the beta1 group showed increased left ventricular end-diastolic diameter (LVDd), decreased left ventricular ejection fraction (LVEF) and increased LV mass/body weight ratio after the 8th month. Immunoabsorption with beta1-adrenoceptor peptide column was able to remove up to 35% of anti-beta1-adrenoceptor autoantibodies in 2 h, resulting in decreased LVDd and increased LVEF 3 months after. Specific removal of anti-beta1-adrenoceptor autoantibodies improved cardiac structure and function in experimental autoimmune cardiomyopathy. These results suggest that anti-beta1-adrenoceptor autoantibodies are of pathogenic importance in the induction of cardiomyopathy, and that specific immunoabsorption as an emerging therapy may be considered when anti-beta1-adrenoceptor autoantibodies are pathophysiologically involved.

journal_name

J Mol Cell Cardiol

journal_title

Journal of molecular and cellular cardiology

authors

Matsui S,Larsson L,Hayase M,Katsuda S,Teraoka K,Kurihara T,Murano H,Nishikawa K,Fu M

doi

10.1016/j.yjmcc.2006.04.016

subject

Has Abstract

pub_date

2006-07-01 00:00:00

pages

78-85

issue

1

eissn

0022-2828

issn

1095-8584

pii

S0022-2828(06)00539-6

journal_volume

41

pub_type

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