leukocyte adhesion cascade

The leukocyte adhesion cascade is part of the inflammatory response, in which antigen-stimulated leukocytes extravasate in a series of steps:

1. capture (or transitory adhesion)
2. rolling
3. slow rolling
4. firm adhesion
5. transmigration across the endothelium (diapedesis)

Cytokines bind to proteoglycans:
● on the endothelial cell surface
● within the extracellular matrix

Particular chemokines ligate only with leukocytes that bear appropriate receptors, while leukocytes migrate along chemokine gradients. The selectin family of cellular adhesion molecules mediate function/migration of circulatory cells: L-leukocytes; E-endothelial cells; P-platelets and endothelial cells.

Џ animation of leukocyte adhesion, and explanation of animation Џ

Tables  Cell Adhesion Molecules  Cell signaling  Complement Receptors  Cytokines  Fc receptors  Immunoglobulins  Interferons Receptor Tyrosine Kinases (RTKs)  Receptor Signal Transduction  Scavenger Receptors  Second Messengers  Toll-like Receptors


Labels: , , , , , , ,

. . . since 10/06/06