Alterations in Marginal Zone Macrophages

نویسندگان

  • Pamela L. Witte
  • Shirin Z. Birjandi
  • Jill A. Ippolito
  • Anand K. Ramadorai
چکیده

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Macrophages of the splenic marginal zone are essential for trapping of blood-borne particulate antigen but dispensable for induction of specific T cell responses.

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Cells in the marginal zone of the spleen.

The marginal zone of the spleen forms an intriguing area in which a variety of cell types are combined. Several of these cell types seem to have a fixed position in the marginal zone, such as the marginal zone macrophages, the marginal metallophilic macrophages at the inner border, and, to a lesser extent, the marginal zone B cells. For other cell types--T lymphocytes, small B cells, and dendri...

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The presence of MOMA-2+ macrophages in the outer B cell zone and protection of the splenic micro-architecture from LPS-induced destruction depend on secreted IgM.

The role secretory IgM has in protecting splenic tissue from LPS-induced damage was assessed in mice incapable of secreting IgM but able to express surface IgM and IgD. Within seconds after LPS challenge, 99% of the (131)I-labeled LPS was found in the liver and the spleen of both sIgM-deficient and wild-type mice. In the spleen FITC-labeled LPS was found on the surface of 2F8(+) scavenger recep...

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تاریخ انتشار 2011