Kinetics of monocytoid B lymphocytes in localized inflammatory lesions induced by lipopolysaccharide in mice

Masahiko Fujino, Masaharu Ohbayashi, Naoki Ohmiya, Nobuo Kato, Junpei Asai, Masafumi Ito

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Immunohistochemistry was used to study the kinetics of B lymphocytes (B- lys) in the early stages of the localized inflammatory response induced in SMA mice by the subcutaneous injection of lipopolysaccharide (LPS). At the injection sites, medium-sized B-lys formed early inflammatory lesions with neutrophils and activated macrophages on days 1 and 2. The B-lys were morphologically similar to monocytes, but were not stained with Mac1 antibody. Remarkably the B-lys showed the phenotypes of B220+, IgM+, IgD (slight to negative), Ly-1- and CD23- by double immunohistochemical staining. The B-lys were also positive for alkaline phosphatase. Consequently the B-lys could be identified as monocytoid B-lys or marginal zone B-lys. Plasmacytic B-lys and plasma cells were first observed on days 3 and 4, but no lymphoid follicles were found at the injection sites. In the inguinal lymph nodes, the same B-lys responses were mainly induced in the paracortical lesions (T cell areas) preceding the formation of activated germinal centers (GC). These findings suggested that the B-lys, induced by injections of LPS, matured into plasma cells in the localized inflammatory lesions independent of GC, and that they were different from follicular B-lys.

本文言語English
ページ(範囲)399-407
ページ数9
ジャーナルPathology International
46
6
DOI
出版ステータスPublished - 1996
外部発表はい

All Science Journal Classification (ASJC) codes

  • 病理学および法医学

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