Unusual expression of IgG Fc receptors on peripheral granulocytes from patients with leukocyte adhesion deficiency (CD11/CD18 deficiency)

T. Majima, Naoko Minegishi, R. Nagatomi, Y. Ohashi, S. Tsuchiya, K. Kobayashi, T. Konno

研究成果: Article査読

29 被引用数 (Scopus)

抄録

Leukocyte adhesion deficiency (LAD) is a hereditary disease characterized by defective expression of leukocyte adhesion glycoproteins; lymphocyte function-associated Ag-1 (CD11a/CD18), CR3 (CD11b/CD18) and p150,95 (CD11c/CD18). Granulocytes, monocytes, and lymphocytes of patients with LAD show profoundly defective in vivo and in vitro adherence-dependent immune functions. We investigated the expression of FcR for IgG on polymorphonuclear cells (PMN) and monocytes from patients with LAD, and their luminol- and lucigenin-enhanced chemiluminescence production in response to SRBC sensitized with murine (m) IgG2a and IgG2b. Unstimulated patient PMN showed an enhanced chemiluminescence in response to mIgG2a-SRBC and an increased phagocytosis of mIgG2a-SRBC. The up-regulated functions were inhibited by monomeric human IgG in a dose-dependent manner, which was attributed to an increase in expression of FcRI on patient PMN, as shown by flow cytometry using monoclonal antibody, 32.2, specific for human FcRI. In contrast, neither the expression of FcR on the monocytes of LAD patients nor their FcR-mediated functions were different from those of controls.

本文言語English
ページ(範囲)1694-1699
ページ数6
ジャーナルJournal of Immunology
145
6
出版ステータスPublished - 1990 1月 1

ASJC Scopus subject areas

  • 免疫アレルギー学
  • 免疫学

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