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Intravital microscopy comparing T lymphocyte trafficking to the spleen and the mesenteric lymph node.
- Source :
-
American Journal of Physiology: Heart & Circulatory Physiology . Jun2003, Vol. 284 Issue 6, pH2213. 14p. 6 Color Photographs, 3 Diagrams, 2 Charts, 25 Graphs. - Publication Year :
- 2003
-
Abstract
- Lymphocyte rolling velocity is determined largely by interactions between leukocyte α[sub 4]-integrin (CD49d) and L-selectin and mucosal addressin cell adhesion molecule-1 (MAdCAM-1) in mesentric postcapillary venules and Peyer's patch high endothelial tissue sites of lymphocyte emigration is not known. With the use of real-time intravital confocal microscopy, we found that rolling velocities of T lymphocytes in the murine mesentric lymph node (MLN) HEV also depend on L-selectin and CD49d. However, in the murine spleen, rolling velocities of T lymphocytes are not influenced by the loss of L-selectin and CD49d. With the use of FITC-dextran and TIE2-GFP mice, we further defined the microvascular compartments of the spleen and showed that adherence of T cells is localized to regions in the white pulp that are not lined by endothelial cells and have shear rates similar to bone marrow sinusoids. These results establish that T cell trafficking to the spleen differs from trafficking to other secondary lymphoid organs and suggest that the mechanical properties of the blood-filtering role of the spleen are important in T cell accumulation in the organ. [ABSTRACT FROM AUTHOR]
- Subjects :
- *T cells
*SPLEEN
*MESENTERY
*LYMPH nodes
Subjects
Details
- Language :
- English
- ISSN :
- 03636135
- Volume :
- 284
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- American Journal of Physiology: Heart & Circulatory Physiology
- Publication Type :
- Academic Journal
- Accession number :
- 9941647
- Full Text :
- https://doi.org/10.1152/ajpheart.00999.2002