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(Journal Article): Autoimmune dilated cardiomyopathy in PD-1 receptor-deficient mice.
Nishimura H, Okazaki T, Tanaka Y, Nakatani K, Hara M, Matsumori A, Sasayama S, Mizoguchi A, Hiai H, Minato N, Honjo T (Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Yoshida Konoe-cho, Sakyo, Kyoto, 606-8501, Japan.)
IN:
Science
2001; 291(5502):319-322
Impact Factor(s) of Science: 30.927 (2005), 31.853 (2004), 29.162 (2003), 26.682 (2002), 23.329 (2001)
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ABSTRACT: Dilated cardiomyopathy is a severe pathology of the heart with poorly understood etiology. Disruption of the gene encoding the negative immunoregulatory receptor PD-1 in BALB/c mice, but not in BALB/c RAG-2-/- mice, caused dilated cardiomyopathy with severely impaired contraction and sudden death by congestive heart failure. Affected hearts showed diffuse deposition of immunoglobulin G (IgG) on the surface of cardiomyocytes. All of the affected PD-1-/- mice exhibited high-titer circulating IgG autoantibodies reactive to a 33-kilodalton protein expressed specifically on the surface of cardiomyocytes. These results indicate that PD-1 may be an important factor contributing to the prevention of autoimmune diseases.
TYPE OF PUBLICATION: Original article
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