A novel method to analyze leukocyte rolling behavior in vivo
نویسندگان
چکیده
منابع مشابه
Leukocyte Rolling In Vivo
The influence of platelet-vessel wall interactions on leukocyte rolling was investigated in rabbit mesenteric venules (diameter, 21-40 gm) using intravital videomicroscopy. Puncture of the wall with glass micropipettes (tip, 6-8 ,um) evoked the formation of a thrombus in all venules. In most vessels, emboli were produced as well. The rolling of leukocytes (i.e., their movement along the vessel ...
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Tracking the movement of rolling leukocytes in vivo contributes to the understanding of the mechanism of the inflammatory process and to the development of anti-inflammatory drugs. Several roadblocks exist that hinder successful automated tracking including the moving background, the severe image noise and clutter, the occlusion of the target leukocyte by other leukocytes and structures, the ji...
متن کاملAnalysis of leukocyte rolling in vivo and in vitro.
Leukocyte rolling is an important step for the successful recruitment of leukocytes from blood to tissues mediated by a specialized group of glycoproteins termed selectins. Because of the dynamic process of leukocyte rolling, binding of selectins to their respective counter-receptors (selectin ligands) needs to fulfill three major requirements: (1) rapid bond formation, (2) high tensile strengt...
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The velocity of rolling leukocytes is thought to be determined by the expression of adhesion molecules and the prevailing wall shear stress. Here, we investigate whether rapid cleavage of L-selectin may be an additional physiologic regulatory parameter of leukocyte rolling. A unique protease in the membrane of leukocytes cleaves L-selectin after activation, resulting in L-selectin shedding. The...
متن کاملP-selectin mediates spontaneous leukocyte rolling in vivo.
Rolling represents the initial step leading to leukocyte extravasation from blood vessels during an inflammatory reaction. In vitro studies indicate that P-selectin could be one of the ligands on endothelium involved in the rolling phenomenon, although the molecular determinants responsible for this transient attachment in vivo are still undefined. Our objectives were to develop a blocking mono...
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ژورنال
عنوان ژورنال: Biological Procedures Online
سال: 2004
ISSN: 1480-9222
DOI: 10.1251/bpo87