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ORIGINAL ARTICLE: A High Dose of Intravenous Immunoglobulin Increases CD94 Expression on Natural Killer Cells in Women with Recurrent Spontaneous Abortion
Author(s) -
Shimada Shigeki,
Takeda Masamitsu,
Nishihira Jun,
Kaneuchi Masanori,
Sakuragi Noriaki,
Minakami Hisanori,
Yamada Hideto
Publication year - 2009
Publication title -
american journal of reproductive immunology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.071
H-Index - 97
eISSN - 1600-0897
pISSN - 1046-7408
DOI - 10.1111/j.1600-0897.2009.00739.x
Subject(s) - antibody , abortion , immunology , cytotoxic t cell , cytotoxicity , natural killer cell , medicine , biology , pregnancy , in vitro , biochemistry , genetics
Problem A high dose of intravenous immunoglobulin (HIVIg) therapy is effective in various diseases such as autoimmune diseases, and also is expected to have efficacy in recurrent spontaneous abortion (RSA). The aim of this study was to understand immunological mechanisms of this therapy. Method of study By flowcytometric analyses, we examined phenotypic changes of a variety of immunological cells including natural killer (NK) cells, cytotoxic T cells, regulatory T cells and macrophages in peripheral blood of RSA women with HIVIg therapy ( n = 8). Results Expression percentages of inhibitory CD94 on NK cells significantly ( P = 0.01) increased after the therapy (58.8 ± 21.4% versus 71.0 ± 17.6%). Conclusion Mechanisms of possible efficacy of HIVIg therapy for RSA may include enhancement of CD94 expression and subsequent suppression of NK cell cytotoxicity.