Document Detail


Specific immunoadsorption therapy using a tryptophan column in patients with refractory heart failure due to dilated cardiomyopathy.
MedLine Citation:
PMID:  20981738     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Background: Certain cardiac-specific autoantibodies found in patients with dilated cardiomyopathy (DCM) play a role in mediating myocardial damage and fatal ventricular arrhythmias resulting in sudden cardiac death. Immunoadsorption therapy (IA) is one of the therapeutic tools to remove such autoantibodies. Clinical studies from Germany have shown that nonspecific IA using columns loaded by sheep antihuman IgG or protein A improved hemodynamic data and affected favorably cardiac function and survival in patients with heart failure (HF) due to DCM. The goal of this study is to determine if IA therapy using the high-profile tryptophan column, which has high affinity for IgG3 subclass, affects favorably cardiac function in patients with severe HF who are refractory to conventional therapy. Methods and Results: IA therapy was conducted in 16 patients with DCM (age 53 ± 4, male 8, New York Heart Association functional class III/IV, mean ejection fraction 18 ± 2%). Study subjects had autoantibodies directed against either β1-adrenergic or M2-muscarinic receptors. Plasma brain natriuretic peptide levels were significantly decreased after IA (P = 0.016). Plasma inflammatory cytokines including interleukin-6 and tumor necrosis factor-α did not change after each session of IA. Six-minute walk distance was significantly increased after IA (P = 0.01). Left ventricular ejection fraction increased by 3% 3 months after IA (P = 0.039). Conclusions: Our initial experience demonstrated safety and short-term efficacy of IA using a new IgG3-specific tryptophan column for patients with advanced HF due to DCM. Long-term follow-up is needed to confirm the effects on cardiac function and morbidity/mortality in such patients. J. Clin. Apheresis, 2010. © 2010 Wiley-Liss, Inc.
Authors:
Yuji Nagatomo; Akiyasu Baba; Hiroyuki Ito; Kotaro Naito; Akihiro Yoshizawa; Yasuo Kurita; Iwao Nakamura; Toshiaki Monkawa; Takashi Matsubara; Yasuhisa Wakabayashi; Satoshi Ogawa; Makoto Akaishi; Tsutomu Yoshikawa
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2010-10-27
Journal Detail:
Title:  Journal of clinical apheresis     Volume:  -     ISSN:  1098-1101     ISO Abbreviation:  -     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-10-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8216305     Medline TA:  J Clin Apher     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Cardiology Division, Department of Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan.
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