Differential regulation of leucocyte L-selectin (CD62L) expression in normal lymphoid and inflamed extralymphoid tissues.

Differential regulation of leucocyte L-selectin (CD62L) expression in normal lymphoid and inflamed extralymphoid tissues.
复制标题

正常淋巴组织和发炎的淋巴外组织中白细胞 L-选择素 (CD62L) 表达的差异调节。

DOI:
10.1136/jcp.49.9.721
复制
发表时间:
1996
影响因子:
3.4
通讯作者:
Tedder,TF
Tedder,TF
中科院分区:
医学3区
文献类型:
--
作者:
Munro,JM;Briscoe,DM;Tedder,TF

文献摘要

参考文献

被引文献

相似文献

目的 研究 L-选择素的组织表达,L-选择素是一种白细胞表面分子,被认为参与与某些内皮细胞的粘附,特别是在外周淋巴结和炎症过程中,并在白细胞活化时脱落。方法通过免疫组织化学和双重免疫荧光染色检查不同淋巴部位以及正常和发炎的淋巴外组织中的白细胞。结果SL-选择素存在于不同淋巴部位(包括肠道)的套区 B 淋巴细胞上。淋巴组织,但生发中心 B 细胞不存在。脾白髓 B 细胞也表达 L-选择素。表达 L-选择素的 T 淋巴细胞比例取决于所研究的部位,外周淋巴结中表达 L-选择素的比例最高(平均 48% 的 T 细胞呈阳性),而粘膜淋巴部位和脾脏中表达 L-选择素的 T 淋巴细胞比例较低(分别为 9% 和 11% 阳性)。在扁桃体的滤泡树突状细胞和胸腺的巨噬细胞上观察到非淋巴细胞 L-选择素染色。 L-选择素阳性白细胞在正常淋巴外组织中很少见,并且在大多数炎症环境中也相对较少。然而,在肾移植排斥反应中,较高比例 (30%) 的白细胞表达 L-选择素。 结论 总体而言,结果表明特定组织中白细胞表达 L-选择素的程度可能反映了进入这些组织对 L-选择素表达的需求以及白细胞一旦定位于那里的激活状态。
AIMSTo study tissue expression of L-selectin, a leucocyte cell surface molecule that is considered to be involved in adhesion to certain endothelia, particularly in peripheral lymph nodes and during inflammation, and is shed upon leucocyte activation.METHODSLeucocytes were examined by immunohistochemistry and double immunofluorescence staining in various lymphoid sites and normal and inflamed extralymphoid tissues.RESULTSL-selectin was present on mantle zone B lymphocytes in different lymphoid sites, including in intestinal lymphoid tissue, but was absent on germinal centre B cells. Splenic white pulp B cells also expressed L-selectin. The proportion of T lymphocytes expressing L-selectin depended on the site under study, being greatest in peripheral lymph nodes (mean 48% of T cells positive), and lower in mucosal lymphoid sites and spleen (9 and 11% positive, respectively). Non-lymphocytic L-selectin staining was observed on follicular dendritic cells in tonsils and on macrophages in thymus. L-selectin positive leucocytes were rare in normal extralymphoid tissues, and relatively few were seen in most inflammatory settings. However, in rejecting renal transplants, a higher proportion (30%) of leucocytes expressed L-selectin.CONCLUSIONSOverall, the results indicate how the degree of L-selectin expression by leucocytes in particular tissues may reflect a requirement for L-selectin expression for entry into those tissues and the activation state of leucocytes once localised there.
DOI: 10.1038/361555a0
发表时间: 1993-02
期刊: Nature
影响因子: 64.8
作者:
Y. Lmai;L. Lasky;S. Rosen
通讯作者: Y. Lmai;L. Lasky;S. Rosen
L-选择素可以在体内介导未经处理的肠系膜微静脉中的白细胞滚动,不依赖于E-或P-选择素
DOI: 10.1182/blood.v82.5.1632.1632
发表时间: 1993
期刊: Blood
影响因子: 20.3
作者:
K. Ley;T. Tedder;G. Kansas
通讯作者: G. Kansas
DOI: 10.4049/jimmunol.144.2.532
发表时间: 1990-01
影响因子: 4.4
作者:
T. Tedder;Ann C. Penta;H. Levine;A. Freedman
通讯作者: T. Tedder;Ann C. Penta;H. Levine;A. Freedman
DOI: 10.1172/jci116859
发表时间: 1993-11-01
影响因子: 15.9
作者:
HANNINEN, A;TAYLOR, C;MICHIE, SA
通讯作者: MICHIE, SA
DOI: 10.1038/349164a0
发表时间: 1991-01-10
期刊: NATURE
影响因子: 64.8
作者:
WATSON, SR;FENNIE, C;LASKY, LA
通讯作者: LASKY, LA